BRPI0815515A2 - "ARTICLE OF DISPOSABLE ABSORBER CLOTHING AND METHOD OF MANUFACTURING THE SAME" - Google Patents

Abstract

disposable absorbent garment article and method of manufacturing the same method of making a disposable diaper in which the position of an absorbent core does not make it out of alignment with the center of a pair of elastic leg members. the method includes a process for manufacturing a leaf member (p1), a joining process (p2), and a cutting process (p3). in the manufacturing process of the leaf member (p1), elastic members are attached, while being stretched, to the leaves continuously supplied in the machine direction (md), and thus forming the rear side and belly side leaf members (20, 30). in the joining process (p2), absorbent (absorption) panels (4) are attached to the side of the belly and the leaf members of the rear side (20, 30) at constant intervals. each absorbent panel (4) has a pair of elastic members between legs (42) mounted, while stretched, on the absorbent panel (4) so as to extend along the elongated opposite sides of a rectangular shape of the absorbent panel (4) and further having an absorbent core (5) joined to the absorbent panel (4) so as to be symmetrically around an imaginary line forking the distance between the pair of elastic members between legs. in the cutting process (p3), the rear side sheets and the side of the belly (2,3) in which the absorbent panels are joined and cut.

Description

“ITEM OF THE DISPOSABLE ABSORBENT CLOTHING AND THE MANUFACTURING METHOD OF THE SAME”

The present invention relates to an article of disposable absorbent clothing and a method of producing it, particularly to an article of disposable absorbent clothing, such as a disposable diaper, pants type diapers for training children, diapers for brief incontinence and the method for manufacture.

More particularly, the present invention includes a first aspect reporting the method of making the disposable diaper, a second aspect reporting the disposable diaper and a third, fourth and fifth aspects reporting the absorbent garment as the disposable diaper.

The disposable diaper, in general, is provided along the regions in which the diaper comes into contact with the user's waist and legs with elastic members surrounding the waist and elastic members surrounding the legs. For example, DOCUMENT PATENT 1 discloses a method for manufacturing a disposable diaper as illustrated in Figure 7 of the attached drawings, comprising a step S-1 of feeding the first web 115 and a second web 116 both previously provided with elastic members surrounding legs 125 connecting them, a step S-2 of fixing the elastic members surrounding the waist 124 connecting the first and second wefts 115, 116 to each other and one and a step S-3 of fixing an absorbent panel 103 containing a absorbent core 128 to the first web 115 so as to be positioned between a pair of elastic members surrounding the legs 125.

As one of several types of disposable diaper, a diaper comprising three substantially rectangular sheets joined together in an I-shape (referred to hereinafter as a three-piece type diaper) is well known.

The three-piece type diaper advantageously reduces the cost of production particularly in the light of the no waste of hair being generated during the diaper manufacturing process of this type. However, it is difficult for such a diaper to cover the region between the legs and the user's buttocks in an appropriate manner since the rectangular sheet is parted to cover the region between the user's legs. More specifically, the sheet having a waist sized to cover the

2/85 the region between the user's legs in an appropriate manner would have to be very small to cover the user's buttocks completely taking a large uncomfortable volume in the region between the user's legs.

Taking this problem into account, DOCUMENT PATENT 1 discloses a pants-type diaper comprising a front waist panel and a panel between legs provided with front and rear waist panels where these front and rear waist panels are joined to each other along the opposite side edges of the front waist panel and the opposite side edges of the rear waist panel being joined so as to form an opening in the waist and a pair of openings in the legs characterized by the width of the belt of the rear waist panel being sized to be greater than the width of the front waist panel strap. As can be seen in Figure 1 of PATENT DOCUMENT 1, the opening of the waist is defined by the respective higher edges (distal edges) of the front waist panel and the rear waist panel and the openings of the even legs being defined by the respective longer edges. lower (proximal edges) of the front waist panel and the rear waist panel cooperating with the opposite side edges of the panel between legs, respectively.

The disposable diaper intended to make deep bottoms is well known, as in Japanese Patent Application Publication No. 2004-141640 (DOCUMENT PATENT 1). The diaper disclosed in DOCUMENT PATENT 1 is configured from a region of the front waist, a region of the rear waist and a region between legs comprising an absorbent chassis having an inner side facing the wearer's skin and an outer side facing the clothing of the user, and elastic members surrounding the waist attached to the front and rear waist regions in order to extend in a transverse direction. The absorbent chassis comprises, in turn, an inner sheet facing the user's skin and an outer side facing the user's clothing where at least the outer sheet is formed by a fine non-woven fibrous material such as its basic weight sufficiently. reduced to accentuate light transmission. By intensifying the light transmission in this way, the inside of the diaper can be made in a way to be completely seen.

3/85

The pants-type diaper as a typical configuration of the article of disposable garment-type body fluid is well known. The diaper of this type is exemplarily disclosed in Japanese Patent Application Publication No. 2003265511 (PATENT DOCUMENT 1).

Figures 28 and 29 of the attached drawings are seen in perspective and exploded, respectively, illustrating the pants type diaper 101 revealed in the aforementioned publication. The diaper 101 comprises a cover chassis 102 adapted to cover the user's body and an absorbent panel of body fluid 103. The cover chassis 102 comprises, in turn, a hexagonal front sheet 106 defining a front waist cover region and a part of a region covering the region between legs, a hexagonal rear sheet 107 defining a region of coverage of the rear waist and a part of the region covering between legs and a rectangular central sheet 108 defining the remaining part of the region of coverage between legs . The front and rear leaves 106, 107 are respectively provided with elastic members surrounding the legs 113 attached under tension to them. The central sheet 108 has its opposite end parts connected to the inner surfaces of the front and rear sheets 106, 107. The rectangular waterproof film 117 and an hourglass-shaped sheet 116 are placed on the inner surface of the central sheet 108. The The rectangular body fluid absorbent panel 103 is attached to the inner surface of the hourglass-shaped sheet 116 by means of heat-melted adhesive 118. The body fluid absorbent panel 103 is formed along its opposite side edges with flaps 125. These flaps 125 are provided away from the lateral edges 132 of the same with elastic members 141 attached under tension to them. In the condition of the diaper 101 illustrated in Figure 6, the body fluid absorbent panel 103 curves substantially in a U shape and the flaps 125 and flaps 125 rise on the internal surface of the body fluid absorbent panel 103 as the elastic members 141 are contract from the stretched state as shown in Figure 7. In this way, the flaps 125 form leakage barriers against body fluids leaked laterally. In said diaper 101, the elastic members 141 associated with the respective flaps 125 also describe a U shape. In the diaper 101 worn on the user's body, the elastic members 141 fit together.

4/85 extend upward to be equal parts (halves) around the respective legs in the user's groins. Parts of the elastic members 141 extending upwards overlap the elastic members surrounding the legs 113 provided in the front and rear leaves 106, 107 through several leaves such as the central leaf 108 and thereby ensuring that the diaper 101 comes into close contact with the user's legs over their entire circumference.

The disposable diaper designed to allow the amount of steam generated in the diaper to be guided outside is well known, for example, from the disclosure of Japanese Patent Application Publication No. 1984-144601 (PATENT DOCUMENT 1).

The diaper disclosed in PATENT DOCUMENT 1 comprises the top sheet facing the user's skin, the bottom sheet facing the user's clothing and the elastic film sandwiched between these top and bottom sheets so that the waist opening can be designed to be shrunk in the circumferential direction by the elastic film. The elastic film is attached to the top and bottom sheets intermittently as seen in the transverse direction. The regions of the upper and lower sheets in which the elastic film is not joined to these two sheets arch under contraction of the elastic film to form open channels between these two sheets. The steam generated in the diaper is guided out through these open channels from the diaper to the outside. PATENT DOCUMENTS

PATENT DOCUMENT 1 relating to ^the first aspect of the invention:

Japanese Patent Application Publication No. 2002-358465 (paragraphs 0028 to 0035, Figure 5);

PATENT DOCUMENT 2 relating to ^the first aspect of the invention: W02006 / 017718 (Claim 1, Figures 1 and 7);

PATENT DOCUMENT 1 concerning the 3rd aspect of the invention:

Japanese Patent Application Publication No. 2004-141640

PATENT DOCUMENT 1 relating to ^the fourth aspect of the invention:

Japanese Patent Publication No. 2003-265511 PATENT DOCUMENT 1 relating to ^the fifth aspect of the invention: Japanese Patent Application Publication No. 1984-144601.

5/85 <Problem to be solved by the First Aspect>

In the conventional production line as disclosed in DOCUMENT PATENT 1, a long sheet as the first web 115 is fed in the direction of the machine and the elastic members as the elastic members surrounding the waist are joined under tension to said long sheet. Consequently, a tension in a direction opposite to the machine direction is exerted on the long sheet and it is inevitable that, when the production line is temporarily stopped for some reason, the long sheet on the production line will be displaced from the position at the time of said temporary stoppage of the production line in the opposite direction to the machine direction. If diaper production is started again disregarding this displacement, the position of the absorbent panel 103 will necessarily be displaced from the middle between each pair of elastic members surrounding the legs in one of the diapers produced in this way.

Thus, the production line will be made with a number of diapers out of specification in each of them, having the absorbent core 128 asymmetrically above an imaginary central line forking a distance between a pair of elastic members surrounding the legs 125 and, consequently, a pair of elastic members surrounding the legs 125 and / or the absorbent core 128 and cannot be properly positioned in the region between the user's legs. To avoid this problem, the method known by the state of the art has been required to readjust the correct relationship between the long sheet and the position in which the absorbent panel 103 is to be fixed to the long sheet with manual operation.

In view of the problem described above, it is a main objective of the present invention to provide a method of production of the then improved diaper that does not move from the absorbent core in the middle between a pair of elastic members surrounding the leg even when the production line is temporarily paralyzed.

<Problem to be solved by the Second Aspect>

Certainly the diaper revealed in DOCUMENT PATENT 1 is able to cover the user's buttocks over a sufficient length since the width of the diaper is dimensioned to be larger. However,

6/85 differential dimension will inevitably result in an inconvenience since the rear waist panel is not partially attached to the front waist panel. With the diaper worn on the user's body, the section of the rear waist panel will remain unattached to the front waist panel and may frequently be out of contact with the user's buttocks and may not provide a desired convenience to this section within a defined region between the buttocks and legs. In addition, the three rectangular U-shaped diaper necessarily forms a pair of leg openings on both sides of the user's body in order to be parallel to each other. It should be noted here that a mobile variation of the human legs will mainly extend towards the trunk of the body and therefore the leg openings should preferably open slightly forward.

In view of the problem reported above, it is a main objective of the present invention to provide an improved three-piece type diaper to ensure the desired comfort of the diaper on the user's body particularly in the region defined between the buttocks and the legs.

<Problem to be solved by the Third Aspect>

Usually, it will be desired for the garment as a disposable diaper not only to be highly impervious to air but also to be cool to the orifices, particularly in a hot weather area as well as in a hot weather season. To satisfy these desires, it was designed to reduce the fineness and base weight of the fibrous non-woven material constituting the chassis in the front and rear waist regions to enhance the light transmission so that the user's skin can be seen through the chassis. However, fibrous non-woven material having fineness and reduced basic weight for that purpose can often reduce the elastic resistance as well as break the resistance of the same with a result that the diaper can easily break. Particularly along a peripheral edge of the waist opening necessarily exposed to repeated stretching and contraction, the possibility of easy tearing may be significant.

In view of the aforementioned problem, it is a main objective of the present invention to provide an improved garment so that the article has a good

7/85 resistance to breakage and allow the diaper wearer to be seen through the garment.

<Problem to be solved by the Fourth Aspect>

In the pants type diaper known for the state of the art illustrated by Figures 6 and

7, the elastic members surrounding the legs are divided into three groups consisting of those attached to the front sheet, those attached to the back sheet and those attached to the central sheet characterized in that said groups are straight. The diaper having the elastic members encircled the legs in said harmonization facilitates the continuous production of the diaper at high speed. In this 10 diaper worn on the user's body, under the effect of the elastic members attached to the flaps of the body fluid absorbent panel, the free edges of the flaps are kept upwards, in close contact with the user's groins so that body fluids leak of the groins. However, if the diaper more or less slips down after the diaper has been worn on the user's body, the free edges of the flaps may also slide down to be spaced from the groins, resulting in the leakage of body fluid on the other side. of the leg openings.

In view of the problem described above, it is a main objective of the present invention to improve the article of clothing known for the state of the art that has been exemplarily described above so that the leakage of body fluids on the other hand occurs on the other side of the leg openings. be reliably prevented even if the waist area of the garment slips down after the diaper has been worn on the wearer's body.

<Problem to be solved by the Fifth Aspect>

In the case of the diaper, it is shown in the PATENT DOCUMENT 1 of the open channels, with one end exposed to the outside and the other end terminated in the vicinity of the liquid-absorbent structure. In other words, the other end of the open channel does not extend to the liquid-absorbent structure. Consequently, it will be difficult for these open channels to guide the amount of vapor generated from the liquid-absorbent structure in the region between legs to the outside while it is possible for these open channels to guide the amount of steam remaining in the vicinity of the waist opening, more precisely,

8/85 the amount of steam remaining between the liquid-absorbent structure and the waist opening to the outside.

In view of the problem described above, it is a main objective of the present invention to provide an absorbent article allowing the amount of steam generated in the article to be guided sufficiently out of the article to the outside to alleviate the sensation of moisture as experienced by the article of clothing.

<<Measures to solve the First Aspect problem>

The method for producing the disposable diaper according to the present invention comprises steps of continuous feeding of the elastic members to the front leaf member and the elastic members to the rear leaf member in parallel to each other under tension in the first direction of the machine and connecting these elastic members to the raw leaves of the front and rear leaf members, respectively, continuously fed in the first direction of the machine and thus forming the front leaf member having a constant dimension of width as measured in an orthogonal direction to the first direction of the machine and the rear leaf member also having a constant width dimension so that the front and rear leaf members can continuously operate with a spacing and in parallel to each other, feeding at regular intervals an absorbent panel provided along the opposite long sides with a pair of elastic members for a region between legs connected under tension o them and provided with an absorbent core connected to it so as to be symmetrical over an imaginary central line forking a distance between the pair of elastic members for the region between legs to the front and rear leaf members operating in the first direction of the machine, placing and connecting the absorbent panel to the front and rear leaf members so that the pair of elastic members for the region between legs extends orthogonally to the elastic members for the front leaf member and the elastic members for the rear leaf member, and o cutting the front and rear leaf members having the absorbent panel substantially attached to it along the median part between each pair of adjacent absorbent panels to obtain individual diapers. According to a preferred configuration, the

The method further comprises steps of continuous feeding of a liquid-permeable sheet, a liquid-impermeable sheet and a pair of elastic members for the region between legs in a second direction of the machine and feeding the absorbent core at regular intervals in order to be symmetrical over the imaginary center line by forking the distance between the pair of elastic members to the region between legs, connecting the elastic members to the region between legs under tension to at least one of the liquid-permeable sheets and the liquid-impermeable sheets and connecting the absorbent core between the liquid-permeable sheet and the liquid-impermeable sheet and cutting the liquid-permeable sheet and the liquid-impermeable sheet substantially along the middle part between each of the adjacent absorbent cores in a direction orthogonal to the second direction of the machine to obtain individual absorbent panels.

The method according to the present invention for producing the disposable diaper includes other preferred configurations as will be described below.

The step of forming the leaf members comprises a step of connecting the elastic members to the front leaf member and the elastic members to the back leaf member under tension to the front leaf member and the back leaf member, respectively, so that the front leaf member can contract more significantly than the rear leaf member when the elastic members for the front and rear leaf members, respectively, have tension released. Alternatively, the step of forming the leaf members comprises a step of adjusting an elastic stress under which the elastic members for the front leaf member are attached to the front leaf member to be greater than an elastic stress under which the elastic members for the backsheet member are attached to the backsheet member.

The method may further comprise a step of preparing the elastic members for the non-elastic backsheet member in at least one region of those elastic members overlapped by the absorbent core.

In addition, the connection step may comprise a step of connecting the absorbent panel to the front leaf member and the rear leaf member so that a longitudinal dimension over which the absorbent core lies

10/85 overlaps the front leaf member to be greater than a longitudinal dimension over which the absorbent core overlaps the rear leaf member.

<Measures to solve the Second Aspect problem>

The objective established above will be achieved, according to the present invention, by an improvement in the disposable diaper (referred to hereinafter only as a diaper) substantially symmetrical above an imaginary central line thereof and comprising a longitudinal direction and a transverse direction orthogonal to the longitudinal direction , a member of the abdominal sheet and a member of the dorsal leaf extending in parallel to each other in the transverse direction, and a member of the region between legs extending in the longitudinal direction and joined to the member of the abdominal sheet and the member of the dorsal leaf to connect these abdominal and dorsal leaf members to each other where the member of the region between legs has a transverse dimension less than that of the abdominal and dorsal leaf members.

The improvement according to the present invention is characterized in that the abdominal leaf member and the dorsal leaf member are provided with elastic members surrounding the waist connected to them under tension in the transverse direction, at least in a region of the abdominal leaf member in the in which the elastic members surrounding the waist are present and the leaf member of the region between legs is superimposed on each other, opposite lateral edges extending in the longitudinal direction on both sides of the leaf member between legs being parallel to each other at least when the disposable diaper is flat developed, and an apparent width of the leaf member between legs as measured in the transverse direction after the elastic members surrounding the waist have been left contracted and thus the leaf member between legs has been allowed to retract together with the leaf member abdominal and the dorsal leaf member being larger in a line from the edge with the dorsal leaf member of the q u and in a line from the edge with the limb of the abdominal leaf.

The phrase “disposable diaper is flat developed” used here means that the abdominal leaf member, the dorsal leaf member and the leg between legs are developed and seated against elastic force

11/85 of the elastic members surrounding the waist or other elastic members. The expression “let the various limbs contract” used here means that the elastic members surrounding the waist connected to the diaper tension are freely contracted in the absence of any external force exerted on the diaper until it is balanced with a drag of the materials constituting the abdominal leaf members. and dorsal are achieved.

According to a preferred configuration, the leaf member between legs is provided along the opposite side edges of the leaf member between legs with the elastic members attached thereto under tension and, in addition, provided with the spaced body fluid absorbent structure inside the opposite side edges of the leaf member between legs to be symmetrical above the longitudinal central line, the body fluid absorbent structure having a pair of longitudinal sides extending parallel to the opposite side edges of the leaf member between legs, the sides opposing longitudinal lines curving internally to the body fluid absorbent structure to form curved segments symmetrically above the longitudinal central line, and the curved segments supported on the side of the abdominal leaf member as seen in the longitudinal direction.

According to another preferred configuration, the elastic members surrounding the waist exhibit at least along their segments extending through the absorbent structure of the body fluid on the side of the abdominal leaf member an upper elastic effort on the side of the abdominal leaf member of the than on the side of the dorsal leaf member in the flat developed disposable diaper.

According to yet another preferred configuration, the abdominal leaf member and the dorsal leaf member are provided with the elastic members surrounding the waist connected under tension so that the elastic members surrounding the waist extend through the fluid absorbent structure. body on the side of the abdominal leaf limb being harmonized at intervals close to those of the elastic limbs surrounding the waist that extend through the body fluid absorbent structure on the side of the dorsal leaf limb.

According to yet another preferred configuration, the elastic members surrounding the waist extend through the dorsal leaf member showing

12/85 at least in the vicinity of the border line between the dorsal leaf member and the leaf member between legs, an elasticity lower than that elasticity exhibited by these elastic members surrounding the waist in the remaining region.

According to another preferred configuration, the disposable diaper has been formed in pants by joining the opposite side edges extending in the longitudinal direction on both sides of the abdominal sheet member to the opposite side edges that extend in the longitudinal direction on both sides of the dorsal leaf member so that the abdominal and dorsal leaf members are annularly shaped together to define an opening in the waist while the abdominal and dorsal leaf members are also joined in an annular manner cooperating with the leaf member between legs joined to these abdominal and dorsal leaf members to define a pair of leg openings.

<Measures to solve the Third Aspect problem>

The objective stated above will be achieved, in accordance with the present invention, by an improvement in the article of clothing comprising a chassis having an antero-posterior and a transverse direction, an internal side facing the user's skin and an external side facing the skin of the user of the article, a region of the front waist, a region of the rear waist and a region between the legs extending between the regions of the front and rear waist.

The improvement according to the present invention is characterized in that the chassis includes a peripheral edge of a waist opening consisting of two segments associated with the front and rear waist regions and spaced and opposite from each other in the anteroposterior direction and in the regions full view of the front and rear waist regions where the skin of the article user can be seen, the full view regions being defined by leaves showing a total light transmission of 55% or more and respectively occupying 40% or more of the front and rear waist regions, and reinforcement means against breaking the chassis being attached to the article along the peripheral edge of the waist opening so as to extend in the transverse direction.

13/85

According to a preferred embodiment of the invention, the chassis includes inner sheets defining the respective inner sides of the front and rear waist regions facing the user's skin and outer sheets defining the outer sides of the front and rear waist regions facing the user's article , and reinforcement means comprising an elastic member adapted to tilt the regions of the front and rear waist to contract in the transverse direction and fixed under tension between the inner sheet and said outer sheet.

According to another preferred embodiment of the invention, the front and rear waist regions are provided with a plurality of elastic members intermittently surrounding the waist in the anteroposterior direction and extending in the transverse direction.

According to yet another preferred embodiment of the invention, the chassis includes a liquid-absorbent structure provided at least in the region between legs, the liquid-absorbent structure including a first extreme part and a second extreme part opposed and spaced from each other in the anteroposterior direction , the first extreme part being joined to the front waist region by means of a first joining region and a second joining region being joined to the rear waist region by means of a second joining region, and the completely seen regions being defined by sub-regions of the front and rear waist regions in which the liquid-absorbent structure is absent.

<Measures to solve the Fourth Aspect problem>

The objective established above will be achieved according to the present invention by the improvement in the article of the absorbent garment of the body fluid like disposable pants having a longitudinal direction, a transversal direction and a vertical direction being orthogonal to each other, comprising regions of the front and rear waist and a region between legs combined to define a pants-like shape having a waist opening and a pair of leg openings, characterized by an absorbent panel of body fluid that is provided in the front waist region extending in the longitudinal direction and being affixed to the members of the legs. leaves defining the respective internal surfaces of the front and rear waist regions and by the waist regions

14/85 front and rear are elasticized along the peripheral edge of the waist opening and the respective peripheral edges of the leg openings.

The improvement according to the present invention is characterized in aspects as will be described below: the body fluid absorbing panel comprising a body fluid absorbing core, a liquid-permeable sheet used to pack the core, a body fluid absorbing pad extending in the longitudinal direction and connected to the respective internal surfaces of the regions of the front and rear waist and flaps formed along the lateral edges of the body fluid absorbent pillow opposite in the transverse direction, the edges respectively comprising proximal edges being contiguous to the lateral edges of the absorbent pad of the body fluid. body fluid and extending in the longitudinal direction and free edges, each at a distance from the body fluid absorbent pad in the transverse direction, extending in parallel to the proximal edges; the free edges being provided with first elastic members fixed under tension to them; and the regions of the front and rear waist being provided along the peripheral edges of the leg openings with the secondary elastic members attached under tension so as to intersect with the lateral edges of the body fluid absorbent pad and the flap regions in which the free edges of the flaps developed externally in the transverse direction overlap the secondary elastic members that are affixed to the internal surfaces of the front and rear waist regions.

According to a preferred configuration of the present invention, the front and rear waist regions as well as the body fluid absorbent panel are in the form of rectangles.

According to another preferred configuration of the present invention, a dimension between the proximal edge and the free edge of the flap as measured in the transverse direction will be in a range of 15 to 50 mm.

<Measures to solve the Fifth Aspect problem>

The objective stated above will be achieved, according to the invention, by an improvement in the absorbent article having a height direction, a longitudinal direction and a circumferential direction and comprising belt members annularly defined the front waist region and a waist region

15/85 rear in the circumferential direction and a liquid-absorbent structure defining a region between legs extended between the regions of the front and rear waist where the strap members are provided with contractile means surrounding the waist by tilting the strap members to retract in the circumferential direction. The improvement of the present invention is characterized in that the liquid-absorbent structure has first and second ends opposite and spaced from one another in the longitudinal direction where an external surface of the first end overlaps an internal surface of the front belt section in the region of the front waist to define a first overlapping region and an outer surface of the second end overlapping an inner surface of the brace section in the back waist region to define a second overlapping region, the contractile means surrounding the waist extending partially through at least one of the first overlapping region and of the second overlapping region, and the liquid-absorbent structure being joined to the strap member at least in the first overlapping region or in the second overlapping region by means of junction zones extending in the height direction and harmonized intermittently in the circumferential direction and a first zone of defined junction between each pair of adjacent junction zones defining the channels of the abdomen allowing the region between legs to flow in communication with the front and rear waist regions.

According to a preferred configuration, the channels of the abdomen comprise first channels of the abdomen between the inner surface of the liquid-absorbent structure and the user's skin article and secondary channels of the abdomen defined between the outer surface of the liquid-absorbent structure and the inner surface. of the strap members.

According to another preferred configuration, the first and second overlapping regions respectively have opposing upper and lower ends spaced from each other in the longitudinal direction and the opposite and spaced edges from each other in the circumferential direction, and second junction free zones being defined at the along at least one of the upper and lower ends.

According to yet another preferred configuration, the junction zones comprise continuous junction zones extending in the longitudinal direction

16/85 and in the intermittent junction zones divided into two segments in the longitudinal direction.

According to yet another preferred configuration, the continuous joining zones are formed in the vicinity of the lateral edges of the first and second overlapping regions and the intermittent joining zones being harmonized between the continuous joining zone formed in the vicinity of one of the lateral edges and zone continuous junction formed in the vicinity of the other side edge.

According to yet another preferred configuration, the intermittent junction zones are formed in the vicinity of the lateral edges of the first and second overlapping regions and the continuous junction zones are harmonized between the intermittent junction zone formed in the vicinity of one of the lateral edges and the intermittent junction zone being formed in the vicinity of the other side edge.

According to a preferred alternative configuration, the band members are provided with a plurality of flow holes extending through the band members in a direction of their thickness.

According to another preferred alternative configuration, the liquid-absorbent structure comprises a top sheet facing the skin of the user of the article, and a back sheet facing the skin of the user of the article, an absorbent core sandwiched between these two sheets and sheets of coverings adapted to cover at least one of the first and second ends where said cover sheet has a ventilation rate of 0.15 kPa S / m ² or less.

<First Aspect Effect>

According to the method according to the present invention for the production of the diaper, the absorbent panel previously provided with the absorbent core connected thereto so that a pair of elastic members for the region between legs can be symmetrical about this absorbent core. This measurement surely prevents the absorbent core from being displaced with respect to the middle part between a pair of elastic members surrounding the legs. In addition, the method according to the invention makes it possible to obtain the diaper free of any displacement of the absorbent panel with respect to the front and rear leaf members since the construction of the front and rear leaf members as seen in the first direction of the machine is constant.

17/85 <Second Aspect Effect>

In the diaper according to the present invention, the apparent transverse dimension of the leaf member between legs as measured after the elastic members surrounding the waist have been contracted and thus the leaf member between legs retracted together with the abdomen leaf member and the dorsal leaf member being longer along the edge line with the dorsal leaf member than along the edge line with the abdomen leaf member being sufficiently larger on the dorsal side than on the side of the abdomen to ensure that the the user's buttocks can be safely covered with this back section.

The apparent transverse dimension of the leaf member between legs is relatively small and therefore it will not be understood that the leaf member between legs may become bulky in the region between the user's legs and the user experiencing a feeling of discomfort when wearing the diaper. In addition, the apparent transverse dimension of the leaf member between the legs gradually decreases from the dorsal side towards the abdominal side. This characteristic leads to an advantageous effect. Specifically, a pair of leg openings defined by the cooperation of the leaf member between legs with annular junction of the dorsal and abdominal members being tilted to open properly in front of the diaper. These characteristics allow the present invention to provide the disposable three-piece type diaper with an improved diaper convenience to the user's body mainly in the region extended from the user's buttocks towards the user's legs.

<Third Aspect Effect>

The reinforcement means provided between the halves of the fibrous non-woven material folded in two so as to extend along the peripheral edge of the waist opening serves to reinforce the peripheral edge of the waist opening so that the diaper can be protected from coming to break even if the peripheral edge of the waist opening repeats the stretch and contraction.

<Fourth Aspect Effect>

The disposable pants-type body fluid absorbent garment is characterized by the flaps formed along the opposite side edges of the body fluid absorbent pad on the body fluid absorbent panel

18/85 are provided along their free edges with the first elastic member fixed under tension to them and these free edges and the regions of the flaps in which the free edges of the flaps developed externally in the transverse direction overlap the second elastic member which are attached to the internal surfaces of the front and rear waist regions. With this unique harmonization, the free edges of the flaps are also pressed in the transverse direction when this article of clothing is worn on the user's body and after that the regions of the front and rear waist being pressed in the transverse direction, ensuring that the free edges are supported in the region between legs laterally contacting the user's groins. Provided with these flaps with free edges behaving as described above, even when the article of clothing absorbing the body fluid of the invention type more or less sliding downwards after it is worn on the user's body, the free edges of the flaps they will rarely slide downwards, with no anxiety that leaks of bodily fluids may occur on the other side of these edges. Even if the free edges of the flaps slide downwards, the free edges will keep them in close contact with the user's legs and leakage of body fluids from the other side of the leg openings can be safely prevented.

<Fifth Aspect Effect>

According to the present invention, the strap members are respectively provided with contractile means surrounding the waist by tilting the strap members to retract them in the circumferential direction and the liquid-absorbent structure being joined to the strap members in the first and second overlapping regions by means of the junction zones extending in the height direction and intermittently harmonized in the circumferential direction. The free junction zones each defined between the adjacent junction zones, the passage channels adapted to communicate the fluidity of the region between legs with the front and rear waist regions are formed. The amount of steam generated in the region between legs is guided through these channels of passage to the outside of the absorbent article and in this way the sensation of humidity experienced by the user of the article of clothing can be effectively relieved.

19/85

For a better understanding of the invention, a detailed reference will be made with respect to the attached drawings, presented in an exemplary and non-limiting character, in which:

- Figure 1 is a plan view of the diaper in a flat developed way;

- Figure 2 is a sectional view taken along line ll-ll of Figure 1;

- Figure 3 is a perspective view of the diaper in the form of pants;

- Figure 4 is a schematic diagram illustrating the method for producing the diaper;

- Figure 5 is a front view of the diaper as seen from the side of the abdominal belt;

- Figure 6 is a rear view of the diaper as seen from the side of the back strap;

- Figure 7 is a schematic diagram exemplarily illustrating the method known for the state of the art for the production of the diaper;

Figure 8 is a plan view showing the diaper according to the first configuration of the invention as flat developed;

- Figure 9 is a sectional view taken along line IX-IX in Figure 8;

- Figure 10 is a plan view showing the diaper with the elastic members surrounding the waist left contracted;

- Figure 11 is a perspective view showing the diaper as formed in pants;

- Figure 12 schematically shows the diaper having been formed in pants as seen from the abdominal side;

- Figure 13 schematically shows the diaper having been formed in pants as seen from the dorsal side;

Figure 14 is a plan view showing the diaper according to the second configuration of the invention as flat developed;

- Figure 15 is a plan view showing the diaper with the elastic members surrounding the waist left contracted;

- Figure 16 schematically shows the diaper having been formed in pants on the abdominal side;

- Figure 17 schematically shows the diaper having been formed in pants on the dorsal side;

Figure 18 is a perspective view showing a first configuration of the present invention;

20/85

- Figure 19 is a sectional view taken along line XIX-XIX of Figure 18;

- Figure 20 is a plan view of the diaper shown by Figure 18 as developed and flattened;

Figure 21 is a perspective view showing a second configuration of the present invention;

- Figure 22 is a sectional view taken along line XXII-XXII of Figure 21;

- Figure 23 is a perspective view of a partial cut of the pants type diaper;

- Figure 24 is a plan view of a partial cut of the developed and flattened diaper;

- Figure 25 is a plan view of the diaper developed but left elasticly contracted;

Figure 26 is a view similar to Figure 24, illustrating a preferred configuration;

Figure 27 is a view similar to Figure 25, illustrating another preferred configuration;

- Figure 28 is a perspective view of a partial cut of a pants-type diaper known by the state of the art;

- Figure 29 is an exploded perspective view of the diaper illustrated by Figure 28;

Figure 30 is a perspective view showing the first configuration of the present invention;

- Figure 31 is a plan view showing the diaper of Figure 30 as flat developed;

- Figure 32 is an enlarged sectional view taken along line XXXII-XXXII of Figure 31 with the contractile means surrounding the waist being in a stretched state (a) and with the contractile means surrounding the waist left contracted (b) ;

- Figure 33 is a sectional view taken along line XXXIII-XXXIII of Figure 31;

- Figure 34 is a sectional view taken along line XXXIV-XXXIV in Figure 31;

- Figure 35 is an enlarged scale diagram illustrating the first and second overlapping regions according to the second configuration;

21/85

- Figure 36 is a diagram similar to Figure 35, illustrating a variant of the second configuration;

- Figure 37 is a perspective view showing the third configuration;

- Figure 38 is a view similar to Figure 32 (b), illustrating the third configuration;

- Figure 39 is a plan view of the diaper according to the fourth configuration as flat.

IDENTIFICATION OF THE NUMERICAL REFERENCES USED IN THE DRAWINGS <Numerical references in the First Aspect>

disposable diaper front waist region strap back waist region strap absorbent panel absorbent core waist opening leg openings

9th back sheet

9b backsheet leaf member of the front waist region region of the front waist of opposite side edges region of the rear waist of opposite side edges leaf member of the rear waist region opposite side edges of the region between legs elastic members for the region between member legs elastics for the front waist region elastic members for the back waist region

C imaginary axis

M longitudinal axis

MD1 first machine direction

P1 stage of leaf limb formation

P2 connection step

P3 cutting step

22/85 <Numerical references in the second aspect>

disposable diaper abdominal leaf member dorsal leaf member between the legs body fluid absorbent structure elastic members surrounding the waist waist opening leg openings opposite side edges of the abdominal region opposite side edges of the dorsal region opposite side edges of the region between legs elastic members for the region between legs segments of the straight lateral edge segments of the curved lateral edge <Numerical references in the third aspect>

The chassis front waist region rear waist region region between legs inner side facing the user's skin outer side facing the user's clothing peripheral edge of the waist opening folds elastic reinforcement member (reinforcement means) <Numerical references in the Room Appearance>

pants type diaper waist region (cover member) body fluid absorbing panel (panel member) leaf member (inner sheet)

15b secondary elastic limbs (lower elastic limbs) body fluid absorbent pad

23/85 flaps waist opening leg openings liquid-permeable sheet (inner cover sheet) core

33a side edges

40a proximal edge first elastic members (elastic members of the region between legs)

The longitudinal direction

B transverse direction

C vertical direction <Numerical references in the Fifth Aspect>

region of the front waist region of the rear waist region between legs limb strap structure absorbent to the internal lateral liquid voided to the skin of the external user facing the user's clothing elastic members surrounding the waist (contractile means surrounding the waist) first end second end first region overlapping second overlapping region junction zones first passageways first junction free zones

46. 47 second join free zones continuous join zones intermittent join zones <Preferred First Look Settings>

First, diaper 1 according to the present invention will be described with reference to Figures 1 to 3. Figure 1 is a plan view showing the diaper

24/85 flatly developed as seen from the side facing the user's skin, Figure 2 is a sectional view taken along a line ll-ll of Figure 2 and Figure 3 is a partial section perspective view showing the diaper in the form of pants.

Diaper 1 comprises a side strap in the rectangular front waist region 2 extending in a transverse direction indicated by an arrow X, a side strap in the rectangular rear region 3 spaced from and extending in parallel to the side belt of the front waist region 2 in the transverse direction and a rectangular absorbent panel 4 extending in neither a longitudinal direction indicated by an Y arrow and placed flat and connected together with the side belt of the front waist region 2, as well as with the side belt of the rear waist region 3 in order to connect with these two straps 2, 3 with each other. The absorbent panel 4 has a transverse dimension less than that of the front waist region strap 2 and the rear waist region strap 3 including an absorbent core 5. The diaper 1 substantially has an I shape that is substantially symmetrical about a central line longitudinal M forking a transverse dimension of the diaper 1. The absorbent panel 4 is joined to the front and rear side straps 2, 3 approximately in the respective median zones of the same so that the absorbent panel is also symmetrical over the longitudinal central line M.

The side straps of the front waist 2 and rear 3 regions each comprise a top sheet 11 and a back sheet 12 being the same in shape and size, including a plurality of elastic members 61 for the side strap of the front waist region. 2 or a plurality of elastics 62 for the side belt of the rear waist region 3 are pressed and intermittently connected under tension in the transversal direction X to these sheets 11, 12 by means of the heat-melted adhesive (not shown). The side belt from the front waist region 2 and the side belt from the rear waist region 3 extend parallel to each other and orthogonally to the longitudinal center line M.

Both elastic members 61 for the side belt of the front waist region 2 and the elastic members 62 for the side belt of the rear waist region 3 comprise a plurality of rubber threads regularly spaced from each other in the longitudinal direction Y over the entire areas of the respective straps

25/85

2, 3. It will be appreciated that the top sheet 11 facing the user's skin and the back sheet 12 facing away from the user's skin with diaper 1 worn on the user's body.

The regular absorbent panel 4 comprises a rectangular liquid-absorbent sheet 43 and a rectangular liquid-absorbent sheet 44 both of which are larger than the rectangular absorbent core 5 at least in its transversal dimension, the rectangular absorbent core 5 sandwiched between these two sheets 43 , 44, the elastic members extending in the longitudinal direction completely along the opposite side edges 41, 41 of the region between legs defined by the side edges opposite to those leaves 43, 44. The elastic members 42 on both side edges of the region between legs are attached to those sheets 43, 44 by means of the heat-melted adhesive (not shown). In this particular configuration, rubber threads are used as elastic members 42 on both side edges of the region between legs. It will be appreciated that the liquid-permeable sheet 43 facing the user's skin and the liquid-impermeable sheet 44 facing away from the user's skin with diaper 1 worn on the user's body.

The absorbent core 5 is contained within the absorbent panel 4 so as to be symmetrical over an imaginary central line C forking a distance between the elastic members 42 extended along the opposite lateral edges of the region between legs. The imaginary centerline C falls on the longitudinal centerline with the absorbent panel 4 attached to the side belt of the front waist region 2 to the side belt of the rear waist region 3. Here again, it will be appreciated that the liquid-permeable sheet 43 facing the skin of the user and the liquid impermeable sheet turned away from the user's skin with diaper 1 worn on the user's body.

Preferably, the absorbent core is connected to the side belt of the front waist region 1 and to the side belt of the rear waist region 3 being connected so that a longitudinal dimension on which the absorbent core 5 overlaps the side belt of the front waist region 2 being larger than a longitudinal dimension over which the absorbent core 5 overlaps the side belt of the back waist region 3, as will be apparent in Figure 1. This will ensure that an effective area of the absorbent core 5 to cover a region

26/85 front of the region between legs extended apart towards the side belt of the region of the front waist 2 is large enough to absorb urine with high efficiency.

The absorbent panel 4 is dressed flat and connected to the side strap of the front waist region 2 and to the side strap of the rear waist region 3 so as to overlap the respective regions of that strap 2, 3 in which the elastic members 61, 62 are present. Consequently, the elastic members 61 for the side belt of the front waist region 2, the elastic members 62 for the side belt of the rear waist region 3 and the elastic members 42 for the region between legs overlap each other in the regions where the absorbent panel 4 overlaps the side belt of the front waist region 2 and the side belt of the rear waist region 3, as will be apparent in Figure 2.

Both elastic members 61 for the side strap of the front waist region and the elastic members 63 for the side strap of the rear waist region 3 are attached to the respective straps 2, 3 by means of the heat-melted adhesive (not shown) while the members 42 for the region between legs are connected to the absorbent panel 4. This means that the elastic members 42 for the region between legs are connected with the elastic members 61 for the side belt of the front waist region and the elastic members 62 for the side belt from the back waist region through the upper intermediate sheet and the liquid impermeable sheet 44. Consequently, a stretching force exerted on one of these groups of elastic members will motivate the other groups of elastic members to be responsive to said stretching force and thus become stretched.

The material for the liquid-permeable sheet 43 and the impermeable sheet constituting the absorbent panel 4 can be appropriately selected from the required properties such as liquid permeability, air permeability, and soft touch of various fibrous non-woven materials and / or film conventionally used for the disposable diaper is made of thermoplastic synthetic resin. As the absorbent core 5, the body fluid absorbent material known from the prior art containing shaggy pulp may be used. The absorbent core is packed with tissue paper (not shown) and attached to the liquid-permeable sheet 43 and the liquid-impermeable sheet 44.

27/85

The top sheet 11 and the back sheet 12 constituting the side band of the front waist region 3 can also be appropriately selected from various types of fibrous non-woven material and / or film made of thermoplastic synthetic resin. The material for the top sheet 11 may be the same or different from the material for the back sheet 12.

In addition, a single sheet can be folded in two so that one half defines the top sheet 11 and the other half defines the back sheet 12.

The elastic members 42 for the region between legs and the elastic members surrounding the waist 61,62 may be provided in the form of rubber threads, tape or vulcanized rubber in the form of strips, thermoplastic elastomer, resin film or elasticized non-woven material. Linking between the respective sheets, the respective elastic members, and the absorbent members of the body fluid can be carried out using the method well known in the field of disposable diapers, for example, adhesion with heat-melted adhesive or heat sealing.

By joining the opposite side edges 21, 21 of the side belt of the front waist region 2 extending in the longitudinal direction to the opposite side edges 22, 22 of the side belt of the rear waist region 3 extending in the longitudinal direction so that the side belt the front waist region 2 and the side belt of the rear waist region 3 can be curved to define a circular ring, the diaper 1 being in the shape of pants as shown in Figure 3. It will also be possible to connect the side edges opposite 21, 21 of the side belt of the front waist region 2 with the opposite side edges 22, 22 of the side belt of the rear waist region 3 not by connecting these side edges as seen in Figure 3 but through the intermediate then called closure mechanical consisting of the hook member and the clip member or by means of the target tape / pressure sensitive tape despite these alternative methods not being illustrated.

Having been formed as pants as shown in Figure 3, diaper 1A has a waist opening 7 defined by the side belt of the front waist region 2 and the side belt of the rear waist region 3 annularly joined together, and a pair of openings in the legs 8 defined by the side belt of the waist region

28/85 front 2, by the side belt of the rear waist region 3 and by the absorbent panel 4 connected to these straps 2, 3. More specifically, with reference to Figure 1, the pair of leg openings 8 is defined by an inner edge 13 of the side belt of the front waist region 2 and an inner edge 14 of the side belt of the rear waist region 3 both extending in the transverse direction and opposite each other through the absorbent panel 4 cooperating with the opposite side edges 41 of the absorbent panel 4, that is, the region between the legs. A peripheral edge of the waist opening 71 is defined by an outer edge 15 of the side belt of the front waist region 2 and an outer edge of the side belt of the rear waist region 3 both extending in the transverse direction parallel to the respective inner edges 13 , 14.

As previously described, the elastic members 42 are connected with the elastic members 61 for the side belt of the front waist region and the elastic members 62 for the side belt of the rear waist region. In addition, the elastic members 61 for the side belt of the front waist region 2 and the elastic members 62 for the side belt of the rear waist region 3 are also connected to each other like the side belt of the front waist region 2 and the side brace of the rear waist region that are annularly joined to each other. In the pants type diaper 1A, therefore, the elastic members 61 for the side belt of the front waist region extending in the vicinity of the inner edge 13 of the side belt of the front waist region, the elastic members 62 for the side belt of the region of the front waist. rear waist extending in the vicinity of the inner edge of the side belt of the rear waist region and a pair of elastic members 42 for the region between legs being annularly connected to each other along the leg openings 8 and functioning as elastic members surrounding the legs 81.

The absorbent core 5 is placed on the absorbent panel 4 so that it is symmetrical above the imaginary center line C forking a pair of elastic members 42 partially defining the elastic members surrounding the legs 81. As a result, it will be ensured that the absorbent core 5 can be placed in the middle part between the pair of elastic members surrounding the legs 81 no matter how the absorbent panel 4 is connected to the side belt of the front waist region and to the side belt of the rear waist region 3. In

In other words, by the provision of the absorbent panel 4 with the pair of elastic members 42 for the region between legs partially constituting the elastic members surrounding the legs 81, it will be ensured that the absorbent core will always be placed in the middle part between the elastic members surrounding the legs 81.

Now, the method for producing diaper 1 according to the present invention will be described with reference to Figure 4 which is a schematic diagram illustrating the next steps for producing the target article.

In a step P1 of forming the leaf members, according to a configuration illustrated by Figure 4, a blank 9a to be handled to form a leaf member of the front waist region 20 and the blank 9b to be handled to provide a leaf member of the back waist region 30 being continuously fed in a first direction of the MD1 makeup. These raw sheets 9 a, 9b being respectively coated with heat melted adhesive but not showing the coatings and then the elastic members 61,62 for the front and rear straps being continuously fed in the first direction of the machine under a certain tension and connected to a to the other of the blank 9a, 9b about approximately half the width of the same as seen in a direction (indicated by an arrow CD) orthogonal to the first direction of the machine. The elastic members 61,62 for the front and rear straps may respectively comprise a plurality of rubber threads where the rubber threads may be regularly or irregularly spaced from one another.

Then, the raw sheets 9a, 9b are folded in two parts, respectively, 25 so that the surfaces thereof have elastic members 61, 62 for the front and rear belts coated therein defining the internal surfaces. In this way, the leaf member of the front waist region 20 having a constant transverse dimension and provided with the elastic members 61 is obtained and at the same time the leaf member of the rear waist region 30 having a constant transverse dimension and provided with the members elastics 62 is obtained. Thus, both the leaf member of the front waist region 20 and the leaf member of the rear waist region 30 respectively have constant structures as seen in the first direction of the

30/85 machine. It should be noted that the transverse dimensions of the front and rear waist regions 20, 30 may be the same or different. Current transverse dimensions of these leaf members 20, 30 can be appropriately selected in a range of 50 to 250 mm. The 5-leaf members of the front and rear belt regions 20, 30 formed in this way are spaced parallel to each other in the transverse direction and fed in this relationship to a connection step P2.

In connection step P2, the absorbent panels 4 each containing the absorbent core 5 are fed at regular intervals towards the 10 front and rear leaf members 20, 30, continuously in the first direction of the machine and connected to these leaf members 20 , 30. To feed the absorbent panel 4 at regular intervals, a combination of convertible angle cylinder 91 and pressure cylinder 92 as disclosed in Japanese Patent Application Publication No. 2004-33 549 may be used.

Specifically, the absorbent panel is at 90 ° C facing the convertible angle cylinder 91 and superimposed on the rear leaf member 20 and the front leaf member 30 with the elastic members of the region between legs 42, 42 of the absorbent panel 4 extending orthogonally to the elastic members 61, 62 for the side straps of the front and 20 rear belt regions, respectively.

Preferably, the absorbent panel 4 is connected to the front and rear leaf members 20, 30 so that a longitudinal dimension of the absorbent panel 4 overlapping the front leaf member 20 is greater than the longitudinal dimension of the absorbent panel 4 overlapping the member of the back sheet 30. 25 The members of the front and back sheets 20, 30 having the absorbent panel attached to them in this way are fed in a cutting step P3. However, before the cutting step P3 is described in detail, the step P4 of forming the absorbent structure will be described.

The step P4 of forming the absorbent panels is a separate step 30 preferably a step linearly continuous with the step P1 of forming the leaf members and the step P2 of connection. The step P4 of forming the absorbent panels 4 can be linearly connected between the steps P1 and P2 or the individual absorbent panels 4 formed in the offline step P4

31/85 and can be fed at regular intervals to the front and rear leaf members 20, 30.

In step P4 of forming the absorbent panel, the liquid-permeable sheet 45 and the liquid-impermeable sheet 46 are continuously fed in a second direction of the machine indicated by the arrow MD2 and are coated on one of their opposite surfaces with heat-melted adhesive by means of a coating not shown, then a pair of elastic members 42, 42 for the region between legs extending in parallel to each other being continuously fed under tension in the second direction of the machine to the surface of sheet 45 or 46 and coated with molten adhesive heat and absorbent cores 5 being fed at regular intervals so as to be placed between each pair of elastic members 42 for the region between legs.

Then, the absorbent core 5 and each pair of elastic members 42 for the region between legs are adhesively fixed between the liquid-permeable sheet 45 and the liquid-impermeable sheet 46 under pressure exerted by a cylinder or the like and then substantially cut to the along a median line of each pair of adjacent absorbent cores 5 in a direction orthogonal to the second direction of the machine to obtain the rectangular absorbent panels 4. Each pair of elastic members 42 for the region between legs extends along the opposite long sides of the rectangular absorbent panel 4.

The absorbent core 5 is connected between the liquid-permeable sheet 45 and the liquid-impermeable sheet 46 so that the absorbent core is symmetrical over the imaginary centerline C forking the distance between a pair of elastic members 42 towards the region between legs. In this way, there is no possibility that the position of the absorbent core 5 can be displaced from the middle of the pair of elastic members surrounding the legs 81 no matter how the absorbent panel 4 is connected to the front and rear leaf members 20, 30 and not whether a temporary stoppage in the production line occurs or not. It should be noted here that an essential condition required for the elastic members 42 for the region between legs is that it extends along the opposite long sides of the rectangular absorbent panel 4 and it is not essential for those elastic members 42 to be attached to the sheet

32/85 liquid-permeable 45 and liquid-impermeable sheet 46. Specifically, it will be possible without departing from the scope of the invention to join these elastic members 42 to any of the liquid-permeable sheet 45 and to the liquid-impermeable sheet 46.

In step P3 following step P2, a well-known set of cutting cylinders 93 having upper and lower cutting blades and operating to cut the front and rear leaf members 20, 30 which are substantially cut along the middle of a portion of adjacent absorbent panels 4 in the width direction to obtain the individual diapers 1. In the individual diaper 1, the front and rear leaf members 20, 30 respectively define the side belt of the front waist region 2 and the side belt of the region of the rear waist 3. The opposite side edges 21,21 of the side belt of the front waist region 2 are joined to the opposite side edges 22, 22 of the side belt of the rear waist region 3 to obtain the pants type diaper 1. It will still be possible , as previously described, that the opposite side edges 21,21 and the opposite side edges 22, 22 can be provided with tape closure whereby the front and rear waist regions a can be connected to each other and thus obtain the diaper type pants 1.

If the production line is temporarily paralyzed during these steps, the front and rear leaf members 20, 30 will be pressed in a direction opposite to the first direction of the machine under tension from the elastic members 61, 62 to the side straps of the front and rear waists 2, 3, not joined to the front and rear leaf members 20, 30. As a result, a region R in which the absorbent panel was to be joined to the leaf member and an imaginary cut line Q along which the leaf members front and rear would be cut to be moved in the opposite direction from the first direction of the machine by the same distance.

At the restart of the production line, diapers 1 are produced on the basis of a new connection region R and on a new imaginary cut line Q both differing from those before the production line had been temporarily halted, and it was ensured that the diaper 1 free of any displacement of the absorbent panel 4 with respect to the front and rear leaf members 20, 30 can be obtained, since the

33/85 construction of the front and rear leaf members 20, 30 as seen in the first direction of the machine is constant.

If any displacement of the absorbent panel 4 with respect to the front and rear leaf members occurs during the use of the method according to the present, said displacement will be limited to a region in which the absorbent panel was joined to the leaf member in step P2 and still not cut in step P3. Therefore, there will be no possibility that a number of diapers 1 in each of which the absorbent panel and absorbent core 5 are out of normal positions as in the case of the diaper known from the state of the art.

Furthermore, even if any displacement of the absorbent panel 4 with respect to the front and rear leaf members 20, 30 occurs, no displacement of the absorbent core with respect to the elastic members surrounding the legs 81 will occur as in the case of the diaper known by state of the art. During a temporary stoppage of the production line, the front and rear leaf members 20, 30 can be fixedly reduced between the convertible angle cylinder 91 and the pressure cylinder 92 in connection step P3 as well as between the pair of cutting cylinders 93 in the cutting step P3 to prevent these leaf members from moving in the opposite direction to the first direction of the machine and thereby preventing the absorbent panel 4 from being displaced with respect to the front and rear leaf members 20, 30. Thus, undesirable diaper passage involving a displacement of the absorbent panel 4 can be more safely avoided.

While the leaf member forming the step P1 has been described above in the typical configuration where the front and rear leaf members 20, 30 are formed from two raw leaves 9a, 9b it will be possible to implement step P1 as follows: after a plurality of rubber wires have been bonded under tension to a single sheet being fed in the first direction of the machine, the sheet is folded in two to cover these rubber wires, and then the folded sheet is continuously cut in a parallel direction to the first direction of the machine to obtain the front and rear leaf members 20, 30 and these leaf members 20, 30 being

34/85 spaced from each other in the width direction so as to be parallel to each other. It will also be possible to implement step P1 as follows: a pair of raw sheets respectively prepared to form the front and rear sheet members 20, 30 spaced from each other in the width direction and being fed in parallel to each other in the first direction of the machine , a plurality of rubber threads being attached under tension to the respective raw sheets and then a pair of separately fed raw sheets being respectively placed on the raw sheets provided with a plurality of rubber threads joined together in order to cover those rubber threads and thus forming the members of the front and rear leaves 20, 30.

It does not matter, which configuration of step 1 is adapted to form the front and rear leaf members 20, 30, it being desired to join the elastic members 61,62 to the front and rear leaf members under tension so that the front leaf member 20 may contract more significantly than the backsheet member 30 when the elastic members 61 for the side belt of the front waist region and the elastic members 62 for the side belt of the rear waist region have tension released. The configuration of diaper 1A obtained by connecting the elastic members 61, 62 to the side straps of the regions of the front and rear belts is schematically illustrated by Figures 5 and 6. Figure 5 is a view of the diaper 1A as seen from the side of the side belt of the front waist region 2 and Figure 6 is a view of the diaper 1A as seen from the side of the side belt of the rear waist region 3.

The side strap of the rear waist region 2 contracts more significantly than the side strap of the rear waist region 3 in diaper 1A since the front leaf member 20 contracts more significantly than the rear leaf member 30. In Consequently, an apparent width dimension W1 of the absorbent panel 4 of the diaper 1A in the vicinity of a dividing line between the absorbent panel 4 and the side belt of the front waist region 2 is less than an apparent width dimension W2 of the absorbent panel 4 in the vicinity of a dividing line between the absorbent panel 4 and the side belt of the rear waist region 3.

35/85

The configuration of the absorbent panel 4 so that its apparent width dimension will be gradually reduced from the side belt of the rear waist region 3 to the side belt of the front waist region 2, advantageously ensuring that the diaper 1A can cover a wide extension of the user's buttock and prevent the user from feeling discomfort when wearing the diaper due to the leaves becoming bulky in the region between the user's legs. In addition, the pair of leg openings defined by the absorbent panel 4 and annularly connected to the front and rear straps 2, 3 opens slightly forward to enhance the convenience of diaper 1A around the user's legs.

One of the methods enabling the front leaf member 20 to contract more significantly than the rear leaf member 30 will be to adjust the elastic force of the elastic members 61 to the side belt of the front waist region under which these elastic members are attached to the member of the front sheet 20 to be greater than the elastic stress under which the elastic members 62 of the side belt of the rear waist region are attached to the member of the back sheet 30.

Specifically, a percentage of stretch under which the elastic members are attached to the front leaf member 20 is adjusted to be greater than a percentage of stretch under which the elastic members 62 are attached to the rear leaf member 30 on the assumption that both elastic members are the same in quality of the material as in the configuration.

Alternatively, the elastic members 61 for the front leaf member 20 may be formed by a much larger number of rubber threads than the rubber threads constituting the elastic members 62 for the rear leaf member 30. It will still be possible to differentiate the quality of the material and / or the configuration of the rubber threads between the elastic members 61 for the front leaf member 20 and the elastic members 62 for the rear leaf member 30 to achieve the desired effect.

Alternatively, the elastic film will be used as elastic members 61, 62 for the front and rear leaf members where the width and / or thickness of the elastic members 61 of the front leaf member 20 can be

36/85 differentiated from those of the elastic members 62 to the backsheet member 30 in order to achieve the desired effect.

As yet another method causing the front leaf member 20 to contract more significantly than the rear leaf member 30, a production step of the elastic members 62 joined to the non-elastic rear leaf member 30 can be provided. The elastic members 62 for the backsheet member 30 may be made of non-elastic by the method known by the prior art, for example, cutting, heat treatment or chemically treating the elastic members 62.

<Preferred Second Aspect Settings>

Details of diaper 1 according to the present invention will be described with reference to Figures 8 to 10. Figure 8 is a plan view showing the diaper according to the first configuration of the invention as flat, Figure 9 is a sectional view along a line ll-ll of Figure 8 and Figure 10 is a plan view showing the diaper with elastic members surrounding the waist released from a stretched state as shown in Figure 8.

Figure 8 illustrates diaper 1 as seen from the side of the diaper facing the user's skin. Diaper 1 comprises a rectangular abdominal sheet member 2 extending in a transverse direction indicated by an X arrow, a rectangular dorsal leaf member 3 spaced from the abdominal sheet 2 and extending in parallel to the abdominal sheet member 2 in the transverse direction and a rectangular leaf member between legs 4 extending in a longitudinal direction indicated by an Y arrow and having opposite ends longitudinally joined to the abdominal leaf member 2 and the dorsal leaf member 3, respectively and approximately in the middle parts of these leaf members abdominal and dorsal 2, 3. The leaf member between legs 4 has a transverse dimension less than that of the abdominal leaf member 2, as well as that of the dorsal leaf member 3 including an absorbent body fluid structure 5. Diaper 1 has a I shape that is substantially symmetrical over a longitudinal central line Mea absorbent structure of the body fluid 5 being also si metric above the longitudinal centerline M.

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The abdominal sheet member 2 to the dorsal leaf member 3 comprises an air-permeable topsheet 11 and a backsheet 12 sandwiched between a plurality of abdominal rubber threads 61 or dorsal rubber threads 61 where those rubber threads 61 and 62 meet. extend under tension in the transverse direction and intermittently affixed to the members of the sheets 2 or 3. The abdominal rubber threads 61 are affixed to the members of the sheets 2 under a higher elongation percentage than a percentage of elongation under which the rubber threads 62 they are attached to the dorsal leaf member 3. Consequently, the abdominal rubber threads 61 exhibit greater strain than the stress displayed by the rubber threads 62 associated with the dorsal leaf member when diaper 1 is flatly developed. In other words, the rubber threads 61 extend through the body fluid absorbent structure 5 exhibiting an effort greater than the effort displayed by the rubber threads 62 extending through the body fluid absorbent structure 5. It should be noted that a distance between each pair of abdominal rubber threads 61, as well as a distance between each pair of adjacent rubber threads 62 associated with the dorsal leaf member 3 is constant. The leaf member between legs 4 is placed on the abdominal leaf member 2 and on the dorsal leaf member 3 so as to overlap the regions of these two members 2,3 in which the elastic members surrounding the waist 6 are present. With diaper 1 placed on the user's body, the top sheet on the side facing the user's skin and the back sheet on the side facing away from the user's skin.

The rectangular leaf member between legs 4 has an upper area than an area of the body fluid absorbent structure 5 included together with the elastic members 42, 42 for the region between legs between a rectangular liquid-permeable sheet 43 and a leaf permeable to liquid 44. With diaper 1 placed on the user's body, the liquid-permeable sheet 43 on the side facing the user's skin and the liquid-impervious sheet 44 on the side facing away from the user's skin. With diaper 1 flat, the side edges 41,41 of the sheet between legs 4 extend parallel to each other in the longitudinal direction. Completely along these opposite lateral edges 41, 41 of the region between legs, the elastic members 42, 42 are

38/85 intermittently joined under tension to the leaf member between legs 4. In this first configuration, the rubber threads are used as elastic members 42, 42 for the region between legs.

The body fluid absorbent structure 5 is joined to the leaf member between legs 4 in symmetry over the longitudinal central line M so that the body fluid absorbent structure 5 is spaced a certain distance from each of the opposite lateral edges 41 of the region between legs. The absorbent structure of the body fluid 5 overlaps the abdominal leaf member 2 and the dorsal leaf member 3 so that a longitudinal dimension L1 by which the body fluid absorbent structure 5 overlaps the abdominal leaf member 2 which may be larger than one longitudinal dimension L2 by which the absorbent structure of body fluid 5 overlaps the member of the dorsal leaf

3. In this way, on the side of the abdominal leaf member 2, a front section of the region between the user's legs can be covered with the body fluid absorbent structure 5 over a sufficiently large area to absorb urine with high efficiency.

The body fluid absorbent structure 5 having opposite side edges 51 extending substantially parallel to the opposite side edges 41 of the sheet between legs 4. The opposite side edges 51 comprise a pair of opposite segments 53 extending parallel to each other on the side of the member of the abdominal sheet 2, a pair of opposing segments 54 extending parallel to each other on the side of the dorsal leaf member 3 and a pair of curved segments 52 extending parallel to each other between the parallel segments 53 on the side of the member of the abdominal sheet 2 and parallel segments 54 on the side of the dorsal leaf member 3. The segments 52 are curved internally of the absorbent structure of the body fluid 5 so as to be symmetrical about the longitudinal central line M of the diaper and the absorbent structure of the body fluid 5 as a whole presenting a dumbbell-like shape. A transverse distance between the parallel segments 53 on the side of the abdominal leaf member 2, as well as the distance between the parallel segments 54 on the dorsal leaf member 3.

A section of the body fluid absorbent structure 5 defined by the parallel segments 54 partially overlapping the dorsal leaf member 3

39/85 while a section of the body fluid absorbent structure 5 defined by the parallel segments 53 completely overlapping the abdominal leaf member

2.

The sections of the liquid-permeable sheet 43 and of the liquid-impermeable sheet 44 extend externally in the transverse direction of the respective curved segments 52 to the opposite side edges 41 of the region between legs to form a pair of opposite side flaps 45. These side flaps 45 are provided with the elastic members 42 for the region between legs extending along the opposite lateral edges 41. These side flaps 45 do not have the body fluid absorbent structure 5 attached to them and having relatively low rigidity compared to the remaining section of the region between legs having the body fluid absorbent structure 5 attached to it. Consequently, these side flaps 45 will be easily deformed in response to the stress and contraction of other movements of the elastic members 42 towards the region between legs.

The materials for the respective sheets constituting the diaper may be appropriately selected from a group of various types of fibrous non-woven material and / or film made of thermoplastic synthetic resin conventionally used for disposable diapers in consideration of the required properties. As the body fluid absorbent structures 5, the body fluid absorbent material well known by the state of the art containing shaggy pulp packed with tissue paper (not shown) can be used. The absorbent structure of the body fluid 5 containing shaggy pulp and thus exhibiting relative high inflexibility, that is, relative high resistance to deformation compared to the liquid impervious sheet 44 and the liquid 25 permeable sheet 43. As the elastic members 42 for the region between legs and elastic members surrounding the waist 6, rubber wires, thermoplastic elastomer, rubber band-shaped or conical-shaped, or elastic non-woven material or resin film may be used.

The connection between the respective sheets, the respective elastic members, and the 30 absorbent members of the body fluid can be produced using the method well known by the state of the art in the field of disposable diapers, for example, adhesion with heat-melted adhesive or sealing to heat.

40/85

The elastic effort of the elastic members surrounding the waist 6 generated when the diaper is flattened developed can be adjusted by establishing an appropriate percentage of elongation in which the members surrounding the waist 6 being attached to the diaper. Alternatively, the effort can be adjusted by the appropriate variation of the material and / or the sectional area of the elastic members surrounding the waist 6 at the base of one and the same percentage of elongation.

As shown in Figure 2 in a sectional view, the abdominal and back rubber threads 61, 62 overlap the structure of the body fluid absorber 5 through the upper sheets 11 of the members of the abdominal and back leaf 2, 3 and the leaf impermeable to liquid 44 of the leaf member between legs 4. These members making up the diaper are connected to each other by means of the heat-melted adhesive (not shown) so that the absorbent structure of the body fluid 5 can also contract together with the leaf member abdominal 2, the dorsal leaf member 3 and the leaf member between legs 4 in the transverse direction like the abdominal and dorsal rubber threads 62, 62 contracting in the transverse direction (in a direction perpendicular to the surface of Figure 9).

As will be understood from Figure 3, the front and rear leaf members 2, 3 and the leaf member between legs 4 contract in the transverse direction from the flat developed state indicated by imaginary lines to the state indicated by solid lines like the abdominal rubber threads and dorsal 61, 62 left contracted in the transverse direction. At this point, the abdominal leaf member 2 contracts more significantly than the dorsal leaf member 3 and correspondingly the section of the body fluid absorbent structure 5 defined by the parallel segments on the side of the abdominal leaf member 2 contracting more significantly than in the section defined by the parallel segments on the side of the dorsal leaf member 3. This is why the abdominal leaf member 2 involved greater effort than that involved by the abdominal leaf member 3 when the diaper is flatly developed.

The contraction of the abdominal and dorsal rubber threads 61, 62 motivate the leaf member between legs 4 also to contract in the transverse direction from the rectangular shape indicated by the imaginary line to the trapezoidal shape indicated by a

41/85 solid line. As a result of contraction in this way, an apparent transverse dimension of the leaf member between legs 4 will be as its width W2 on an edge line with the dorsal leaf member 3 being greater than its width W1 on an edge line as the abdominal leaf member 2. The term “apparent transverse dimension of the leaf member between legs” used here refers to a distance between the opposite side edges 41 of the leaf member between legs 4 after the transverse dimension W1 and W2 of the limb sheet between legs 4 has been reduced under contraction of the rubber threads 61,62.

The differential width of the leaf member between legs 4 as the width W2 at the edge line with the dorsal leaf member 3 having been relatively enlarged under contraction of this leaf member 4 allowing the leaf member between legs 4 to cover the buttocks. user over its corresponding greater extension and in this way to improve the comfort of the leaf member between legs 4 particularly to the region from the buttocks to the legs. In addition, the differential width of the leaf member between legs 4 so that its width W1 on the edge line with the abdominal leaf member 2 is relatively smaller under contraction of this leaf member making it possible to avoid the possibility of the leaf member between legs become bulky and, as a result, as a large volume may deteriorate the sensation when wearing the diaper.

With reference to Figures 11 to 13, diaper 1 according to this configuration will be described after formed in pants by the junction of the opposite side edges 21, 21 of the abdominal leaf member 2 extending in the longitudinal direction with the opposite side edges 22, 22 of the dorsal leaf member 3 so that the abdominal leaf member 2 and the dorsal leaf member 3 can be annularly joined together to form the diaper 1 of Figure 11 in pants. The Figure is a perspective view showing diaper 1 formed in pants. Figure schematically shows diaper 1 formed in pants as seen from the front side particularly with respect to the peripheral edges 81 of the leg openings and Figure 13 schematically shows diaper 1 formed in pants as seen from the dorsal side.

As will be apparent from Figure 11, diaper 1 formed in pants has a waist opening 7 defined by the abdominal leaf member 2 and the leaf member

Dorsal 42/85 annularly joined together and a pair of leg openings 8 defined by the front leaf member 2, the dorsal leaf member 3 and the leaf member between legs 4 joined to those two leaf members 2, 3.

More specifically, with reference to Figure 8, these leg openings 8 are defined by the proximal edges 13, 14 of the front and rear or dorsal leaf members 2, 3 extending in the transverse direction and opposite each other behind the leaf member between legs 4 and peripheral edges 81 comprising opposite side edges 41 of the leaf member between legs

4. Specifically to describe, the waist opening 7 is defined by a peripheral edge 71 which is, in turn, defined by the distal edges 15, 16 extending in the transverse direction parallel to the proximal edges 13, 14 of the leaf members front and rear 2, 3 and spaced from each other by a distance greater than the distance by which the proximal edges 13, 14 of the front and rear leaf members 2, 3.

As previously described, a pair of easily deformable side flaps 45 extend outwardly from the body fluid absorbent structure 5 and the elastic members 42 to the region between legs being attached under tension to these side flaps 45. These elastic members 42 to the region between legs contract when the leaf member between legs. 4 is curved with the body fluid absorbent structure 5 internally to form diaper 1 in pants. After that, the lateral edges rise up to the absorbent structure of the body fluid 5 between the abdominal leaf member 2 and the dorsal leaf member 3, as will be seen in Figure 11. The side flaps rising in themselves from this In this way, they define a space 17 surrounded by 25 of them. With the diaper 1 worn on the user's body, this space 17 rests between the region between the user's legs and the absorbent structure of the body fluid 5 serving to isolate the residue absorbed by the body fluid absorbent structure 5 from the user's skin.

While the elastic members 42 for the region between legs will instead be linearly extended 30 between the abdominal leaf member 2 and the dorsal leaf member 3 after their contraction, these elastic members 42 are pressed towards the side flaps 45 towards the absorbent structure of body fluid 5.

43/85

Consequently, the elastic members 42 for the region between legs being curved to describe semi-circular arcs between the abdominal leaf member 2 and the dorsal leaf member 3 so that the opposite side edges 41 of the leaf member between legs 4 are also curved to describe similar semi-circular arches and thereby define the peripheral edge of the respective leg openings.

As previously described, the section defined by the parallel segments 53 of the body fluid absorbing structure 5 in the abdominal leaf member 2 contracts more significantly than the section defined by the parallel segments 54 in the dorsal leaf member 3, and consequently, the limb of the leaf between legs 4 having an apparent width W2 on the side of the dorsal leaf member 3 greater than the apparent width W1 on the side of the abdominal leaf member 2. Said apparent differential width of the leaf member between legs 4 results in an advantageous feature of the invention as will be easily understood from Figure 12 showing the diaper 1 on the front side.

As shown, the peripheral edges 81 of the respective leg openings describe semi-circular arches extending externally in the transverse direction of the abdominal leaf member 2 towards the dorsal leaf member 3. In other words, the leg openings 8 open favorably. in front of diaper 1.

The curved segments 52 of the body fluid absorbent structure 5 are positioned apart towards the members of the abdominal sheet 2 and thus a section of the body fluid absorbent structure 5 extending on the front side of the user's groin region having a relatively small dimension as measured in the transverse direction. With the said dimensional relationship, there is no anxiety that the absorbent structure of the body fluid 5 can be compressed in the region between the user's legs and consequently the user may have the experience of feeling uncomfortable, even when the user closes. your legs. In addition, the side flaps 45 may be deformed maintaining the floor with movement of the user's legs even if the movement is vigorous and thus it will not be understood that no release slits are formed between the user's legs and the

44/85 peripheral edges 81 of the respective leg openings through which body fluids can leak.

As will be apparent from Figure 13 schematically illustrating diaper 1 in the form of pants from its rear side, the percentage of contraction of the absorbent structure of the body fluid 5 will be lower in the same section defined by the parallel segments 54 on the side of the limb. dorsal leaf than in the section defined by the parallel segments 53 on the side of the abdominal leaf member. In this way, the section defined by the parallel segments 53 on the side of the abdominal section member will ensure its sufficient transverse dimension to cover the user's buttocks.

Now a diaper 1 according to a second configuration of the invention will be described with reference to Figures 14 to 17. Figure 14 is a view showing diaper 1 as flat, Figure 15 is a plan view showing the diaper with elastic members surrounding the contracted waistband, Figure 16 and Figure 18 are schematic diagrams showing diaper 1A in the form of pants as seen from the abdominal and dorsal sides, respectively.

As will be understood from Figure 14, an important difference from this configuration of the first configuration is based on the fact that the curved segments 52 of the body fluid absorbent structure partially overlap the member of the abdominal sheet 2.

The leaf member between legs 4 in the second configuration is similar to that of the first configuration shown in Figure 8, except that positions in which the leaf member between legs 4 is attached to the abdominal leaf member 2 and the dorsal leaf member 3, respectively , being placed aside towards the side of the abdominal leaf member 2. Thus, the longitudinal dimension L1 by which the absorbent structure of the body fluid 5 overlaps the abdominal leaf member 2 is larger than the longitudinal dimension L2 by which the structure body fluid absorbent 5 overlaps the dorsal leaf member 3. Alternatively, it will be possible to change the positions in which curved segments 52 are formed in the body fluid absorbent structure 5 so that curved segments 52 can overlap a line of

45/85 edge B1 between the abdominal leaf member 2 and the leaf member between legs 4.

On the other hand, the parallel segments 54 in the body fluid absorbent structure 5 overlap an edge line B2 between the dorsal leaf member 3 and the leaf member between legs 4. With this harmonization, the transverse dimension of the body fluid absorbent structure 5 will be lower at the edge line B1 than at the edge line B2.

The abdominal leaf member 2 and the dorsal leaf member 3 respectively have constructions similar to those of the first configuration shown in Figure 8. Specifically, the elastic effort of the abdominal and dorsal rubber threads 61,62 involved when diaper 1 is flatly developed it is superior in the abdominal leaf member than in the dorsal leaf member 3. The materials, as well as the ways of joining the respective leaf members are similar to those of the first configuration and detailed description of the same will not be repeated here.

When the abdominal and dorsal rubber cords 61,62 respectively are left contracted in the transverse direction as shown in Figure 15, the front and rear leaf members 2, 3 and the leaf member between legs 4 retract in the transversal direction from the flattened state indicated by imaginary lines to state indicated by solid lines. The regions of the front and rear leaf members 2, 3 extended outside the body fluid absorbent structure 5 are relatively easy to be deformed since these regions are not affected by the relatively high firmness of the body fluid absorbent structure 5.

This relationship can be verified by comparing a transverse length of the border line B1 between the limb leaf member 2 and the leaf member of the region between legs 4 with a transverse length of the border line B2 between the back leaf member 3 and the leaf member between legs after the abdominal and dorsal rubber wires 61,62 have contracted. In addition to the greater effort of the rubber threads 6 1 on the abdominal side, the relative short length over which the dorsal leaf member overlaps the absorbent structure of the body fluid 5 leading to a dimensional relationship where the length of the B1 edge line is longer short that the

46/85 length of edge line B2. Thus, the apparent dimension of the leaf member between legs 4 in the transverse direction will be higher on the edge line B2 with the dorsal leaf member 3 of q eu on the edge line B1 with the abdominal leaf member 2, that is, the width W2 at the edge line B2 will be greater than the width W1 at the edge line B1 with the abdominal leaf member 2.

More specifically, the leg openings 8 preferably open in front of the diaper 1 as will be seen in Figure 16 schematically illustrating the diaper from the abdominal side. In the hypothesis that the body fluid absorbent structure 5 of the same configuration is used for the first configuration, as well as for the second configuration, the leg openings will still open in front of the diaper 1 and the inflexibility of the diaper around the user's legs will be improved compared to the first configuration. This is due to the fact that, as described above, the cross-sectional dimension of the body fluid absorbent structure 5 on the edge line B1 will be greater in the second configuration than in the first configuration.

As will become apparent from Figure 17, schematically illustrating diaper 1 in the form of pants starting from the dorsal side of the section of the body fluid absorbent structure 5 defined by the parallel segments 54 on the side of the dorsal leaf member showing a lower concentration percentage of the that the concentration of the percentage displayed by the section of the body fluid absorbent structure 5 defined by the parallel segments 53 on the side of the abdominal leaf member as the first with figuration being the case. Consequently, the cross-sectional dimension of the body fluid absorbent structure 5 is sufficiently larger in the section defined by the parallel segments on the side of the dorsal leaf member than in the section defined by the parallel segments on the side of the abdominal leaf member to cover the buttocks of the user. a desired way.

According to the second configuration, the curved segments 52 of the body fluid absorbent structure 5 partially overlapping the edge line B1 between the abdominal leaf member 2 and the leaf member between legs 4 while the dorsal side of the parallel segments 54 of the structure body fluid absorbent 5 overlaps edge line B2 between the dorsal leaf member

47/85 and the leaf member between legs 4 so that the transverse dimension of the body fluid absorbing structure 5 on the edge line B1 is less than that of the edge line B2. In the flat state, therefore, it will be possible to deform the absorbent structure of the body fluid so that the abdominal rubber threads 61 and the dorsal rubber threads 62 can exhibit the same effort. It will also be possible to adjust the strain on the abdominal rubber threads 61 to be less than the strain on the dorsal rubber threads 62.

According to this second configuration, the apparent width W1 of the leaf member between legs 4 along the edge line B1 in which the curved segments partially overlapping the abdominal leaf member 2 will necessarily be less than the width W2 along the line edge B3 while the abdominal leaf member retracts under contraction of the abdominal rubber wires 61, It will not be essential, therefore, to establish a concentration percentage of the abdominal leaf member 2 at a higher level than a percentage of concentration of the limb of the dorsal leaf 3.

While the three-piece disposable diaper 1 is characterized by its improved suitability to the user's body particularly in the region extending from the buttocks to the user's legs as described above on the basis of the first and second configurations, it should be understood that the present invention does not it will be limited to these configurations but several modifications or variations may be conceived by a specialist in the subject with knowledge of the prior art without departing from the scope of the invention.

In an example of the conceivable variants, the abdominal leaf member 2 and the dorsal leaf member 3 may respectively be provided with a plurality of elastic members surrounding the waist 6 so that the elastic members surrounding the waist 6 extend through the absorbent structure body fluid 5 being harmonized at close intervals in the abdominal leaf member 2 than in the dorsal leaf member 3. For example, the first configuration or the second configuration may be modified so that the abdominal rubber threads 61 extended across the leaf body fluid absorber 5 are harmonized in close intervals than the dorsal rubber threads 62 on the dorsal leaf member 3. Such modification will allow abdominal rubber threads 61 and rubber threads

48/85 dorsal 62 have the same elastic effort. In Figure 8, the number of dorsal rubber threads 62 extended in the body fluid absorbent structure 5 can be appropriately reduced to achieve the above-mentioned modification.

It will also be possible to provide the dorsal leaf member 3 with none of the elastic members surrounding the waist 6 extending through the body fluid absorbent structure 5 or to increase the number of abdominal rubber threads 61 extended through the body fluid absorbent structure 5 with in relation to the number of dorsal rubber threads 62 extended through the body fluid absorbent structure 5. Preferably for said modification, the abdominal and dorsal rubber threads 61,62 have the same elastic effort and the abdominal rubber threads 61 extended through the structure body fluid absorbent 5 being harmonized at close intervals in which the abdominal and back rubber threads 61 extended through the body fluid absorbent structure 5 are harmonized.

In fact, it will be essential that the elastic members surrounding the waist 6 extended through the absorbent structure of the body fluid 5 should exhibit a higher concentration percentage on the side of the abdominal leaf member 2 than on the side of the dorsal leaf member 3 ... ..

An alternative construction will also be designed in such a way that the elastic members surrounding the waist 6 (that is, the dorsal rubber threads 62) extended through the dorsal leaf member 3, at least the elastic members surrounding the waist 6 extended in the vicinity of the borderline B2 between the dorsal leaf member 3 and the leaf member between legs 4 exhibiting a lower elasticity than the elasticity displayed by the elastic members surrounding the waist 6 extended through the remaining region of the dorsal leaf member 3. In other words, it will be possible to construct the dorsal leaf member 3 so that the percentage of contraction of the dorsal leaf member 3 depends on that at least the elastic members surrounding the waist 6 extending in the vicinity of the line edge B2 between the dorsal leaf member 3 and the leaf member between legs 4 exhibit a lower elasticity than the elasticity exhibited by the elastic members surrounding the waist 6 extended across of the remaining region of the dorsal leaf member 3. Diaper 1 of

49/85 according to this variant is apparently similar to diaper 1 illustrated by Figures 8 through 13 and thus not being illustrated.

To differentiate the elasticity displayed by the elastic members surrounding the waist or the percentage of contraction of the dorsal leaf member 3 depending on the region as described above, some of the elastic members surrounding the waist 6 may be made using various means of treating the elastic members surrounding the waist. waist 6 present at the edge line B2 with the dorsal leaf member 3. If some of the elastic members surrounding the waist are extended through the body fluid absorbent structure 5, these elastic members 6 are preferably made of non-elastic. It will thus be ensured that the width W2 on the side of the dorsal leaf member 3 can be kept as wide as possible and the leakage of body fluids due to folds that may otherwise be formed in the absorbent structure of body fluid 5 can be prevented once there is no plus the possibility that the absorbent structure of the body fluid 5 may retract in the transverse direction on the side of the dorsal leaf member 3.

Alternatively, it will be possible to make the elastic members surrounding the waist 6 partially non-elastic still on the side of the abdominal leaf member 2 and to ensure that the width W2 of the leaf member between legs 4 on the side of the dorsal leaf member 3 is greater than the width W1 on the side of the abdominal leaf member 2. Assuming that the abdominal rubber threads 61 and the dorsal rubber threads 62 are made of the same material and have characteristics such as those of the material, the number and percentage of contraction common to both , the relationship as described above will be obtained by dimensioning the extension over which the dorsal rubber threads 62 are made of non-elastic to be superior than the extension over the abdominal rubber threads 61 which are made of non-elastic.

When the elastic members surrounding the waist 6 on the side of the abdominal leaf member 2 are partially made of non-elastic, the region to be flattened for the purpose of preventing urine leakage will preferably be made of non-elastic in view of the fact that the body fluid absorbent structure 5 supported on the side of the abdominal leaf member 2 substantially serves for the absorption of urine. As a specific example,

50/85 the elastic members surrounding the waist can be made and non-elastic along. a peripheral edge of the body fluid absorbent structure 5 overlapping the abdominal leaf member 2 to ensure that leakage of urine possibly occurs in the transverse direction of the body fluid absorbent structure 5 towards the leg openings can be safely prevented.

To cut the elastic members surrounding the waist 6, an appropriate trimmer can be used to cut the elastic members surrounding the waist 6 together with the member of the dorsal leaf 3. When said cutting treatment is adopted, those elastic members surrounding the waist 6 extended through the absorbent structure of the body fluid 5 they can be cut. When heat treatment is adopted to make the elastic members surrounding the waist 6 on the side of the dorsal leaf member 3 non-elastic, the elastic members surrounding the waist 6 will preferably be made of thermoplastic elastomer as is well known in the art as well as elastomer based on urethane or styrene-based elastomer.

Alternatively, the percentage of elastic members surrounding the waist 6 may be periodically varied when those elastic members surrounding the waist 6 are joined to the dorsal leaf member 3 so that at least the elastic members surrounding the waist 6 are supported in the vicinity of the edge line B2 with the dorsal leaf member 3 may have an elongation percentage lower than the elongation percentage of the elastic members surrounding the waist 6 supported on the remaining region. In this way, the elasticity displayed by the elastic members surrounding the waist 6 may be varied depending on the region occupied by those elastic members 6. It will also be possible to adjust the displayed elasticity that the elastic members surrounding the waist 6 supported in the median region along the central line longitudinal M of the dorsal leaf member 3 to be lower than in the regions extended on both sides of the central line M.

With this harmonization, compared to the elasticity exhibited by the elastic members surrounding the waist 6 supported in the vicinity of the edge line B2 between the dorsal leaf member 3 and the leaf member between legs 4,

51/85 the elasticity exhibited by the elastic members surrounding the waist 6 supported on the remaining region will be relatively high. As a result, the elasticity of the elastic members surrounding the waist 6 works to enlarge the apparent transverse dimension W2 of the leaf member between legs 4 in the vicinity of the edge line with the abdominal leaf member 2 as the diaper 1 is formed into pants ( see Figures 13 and 17).

In this case too, the percentage of contraction of the elastic members surrounding the waist 6 on the side of the abdominal leaf member 2 can be adjusted to be greater than that on the side of the dorsal leaf member 3. The elasticity of the elastic members surrounding the waist 6 in the the vicinity of the edge line B2 with the dorsal leaf member 3 can preferably be minimized. As a result, it will be possible to obtain diaper 1 including the leaf member between legs 4 of which the width W2 on the side of the dorsal leaf member 3 is greater than the side W1 on the side of the abdominal leaf member 2. As yet another example of conceivable variants, the absorbent structure of the fluid body 5 can be constructed so that a section of the structure 5 overlaps the member of the abdominal sheet 2 more easily retracted than the section of the same overlapping the member of the dorsal leaf 3. This effect can be achieved, for example, by adjusting a density of the shaggy pulp fiber constituting the body fluid absorbent structure 5 to be lower on the side of the abdominal leaf member 2 than on the side of the dorsal leaf member 3 so that the side of the member of the abdominal sheet 2 may be faster for compressive deformation.

Conceivable variants will not be limited to those described above. For example, it will be possible to use the dorsal leaf member 3 having a longitudinal dimension greater than the longitudinal dimension of the abdominal leaf member 2 instead of using the abdominal and dorsal leaf members 2, 3 which are the same in shape and size . Alternatively, a rectangular or square sheet may be cut in two along a curve describing a sine wave or a flexible elastic line describing a sawtooth wave both extended in the transversal direction so that one of them is to be used as a member of the sheet abdominal 2 and the other being used as a dorsal leaf member 3. It will still be possible to obtain the leaf member

52/85 abdominal 2 or the member of the dorsal sheet 3 by folding a single sheet in two between which a plurality of rubber or other threads may be pressed.

While the shape of the leaf member between legs 4 is concerned, it will be essential that the opposite side edges 41 of it extend in the longitudinal direction becoming parallel to each other when the diaper 1 is flat and the shape of the opposite ends longitudinally connecting the opposite side edges 41 to each other and can be linear, curved or flexible. The liquid permeable sheets 43 and the liquid impervious sheets 44 may each comprise either a single sheet or two or more sheets.

<Preferred Third Look Settings>

Figures 18 to 20 illustrate a disposable diaper as a first garment configuration in accordance with the present invention where Figure 18 shows the diaper as worn on the wearer's body as partially cut for convenience and illustration. As shown, a chassis A comprises a belt member 4 defining a region of the front waist and a region of the rear waist 2 that are joined together jutes to form a ring extended in a circumferential direction R and a liquid-absorbing structure defining the region between legs 3 extended between the front and rear waist regions 1, 2.

The belt member 4 consists of a front belt section 6 defining the front waist region 1 and a rear belt section 7 defining the rear waist region 2 where a pair of side edges 8, 8 of the opposite front belt section in the direction circumferential R and a pair of side edges 9, 9 of the rear belt section 7 opposite in the circumferential direction R being placed flat and joined together, respectively, along a pair of sutures 11 respectively comprising a plurality of harmonized side edge joints 10 intermittently in a height direction Z. The front and rear strap sections 6, 7 are joined together at the respective side edge joints 10 to define a waist opening.

The front belt section 6 comprises an inner sheet 14 defining an inner side 12 on the side facing the wearer's skin and an outer sheet 15

53/85 defining an outer side 13 of the side facing the wearer's clothing while the rear belt section 7 comprises an inner sheet 16 defining the inner side 12 and an outer side 17 defining the outer side 13 facing the clothing side of the user. The inner and outer sheets 14, 15 of the front strap section 6, as well as the inner and outer sheets 16, 17 of the back strap section 7 are respectively formed by folding a single fibrous non-woven material in two along a line folding 34. The fibrous non-woven material before being folded in two to form the inner and outer sheets 14, 15 or the inner and outer sheets 16, 17 exhibit a total light transmission of 80% or more. The inner and outer sheets 14, 15, as well as 16 and 17, formed by folding the fibrous non-woven material in two and placed flat together have a total light transmission of 66% or more, allowing the diaper user to see through of these inner and outer sheets 14, 15 or 16, 17. The result of the measurement of the total light transmission is shown in TABLE 1.

[TABLE 1]

(%) THE B Ç D Total light transmission through a single leaf layer 83.51 8 0.33 85.40 88.41 Total light transmission through two layers of leaves 68.14 66.43 73.06 76.10 TABLE 1 d distinguished types of materials not fibrous tissue used for

inner and outer leaves 14, 15 and 16, 17 by A, B, C and D, respectively, showing mainly values of total light transmission displayed by the respective fibrous non-woven materials before and after being folded in two. The measurement was performed using five samples (N = 5) for each type of material

54/85 non-fibrous tissue. The types of fibrous non-woven material may be selected from a group conventionally well known in the diaper field such as bonded fiber, fused blow, bonded stitch and types through air. The inner and outer sheets 14,15 are formed by folding one and the same type of fibrous non-woven material in two and being necessary for the inner and outer sheets 16, 17. For the front and rear strap sections 6, 7, one and the same type of fibrous non-woven material is used in this way, all inner and outer sheets 14, 15, 16, 17 can typically be formed from one and the same type of fibrous non-woven material.

The total light transmission was measured according to JIS-K7105 and, more specifically, samples having a width of 50 mm and a length of 40 mm were obtained and the colorimeter type photometer vibrant Z-300A (viable by Nippon Denshoku Industries Co ., Ltd.) was used so that each sample was maintained by a turbidimeter to measure turbidity.

A higher peripheral edge 19 of the waist opening as seen in the direction of height Z defined by fold line 34 along which the fibrous non-woven material has been folded in two, that is, the inner and outer sheets 14,15 and 16 , 17, containing in them a thread / string to reinforce the elastic members 35 functioning as means of reinforcement. The elastic reinforcement member 35 extended under tension in the circumferential direction R. Apart from the elastic reinforcement member 35 in the direction of height Z towards the region between legs 3, that is, downward as seen in Figure 1, the strap member 4 being intermittently provided with a plurality of elastic members surrounding the waist 18 spaced from one another. These elastic members surrounding the waist 18 are sandwiched between the inner and outer sheets 14, 15 and between the inner and outer sheets 16, 17 so as to extend under tension in the circumferential direction R. While the reinforcing elastic member 36 is similar to the elastic members surrounding the waist 18 in its material and configuration, this elastic member 35 is referred to as the elastic reinforcement member 35 taking into account its placement along the peripheral edge 19 of the waist opening. These elastic members 18 including the elastic reinforcement member 35 are bonded to at least one of the inner and outer sheets 14, 15 or at least to one of the inner and outer sheets 16, 17 by means of the adhesive (not shown).

55/85

Figure 2 is a sectional view taken along a line ll-ll of Figure 1, showing, in enlarged scale, the peripheral edge 19 of the waist opening provided with the elastic reinforcement member 35. While Figure 2 reports only the inner and outer sheets 14, 15 for convenience of illustration, inner and outer sheets 16, 17 will also be discussed in reference to Figure 2, since the latter is substantially the same in shape. As shown, the elastic reinforcement member 35 extended along the peripheral edge 19 of the waist opening within the fold line 34 along which the inner and outer sheets 14, 15 and the inner and outer sheets 16, 17 are folded. Specifically, the elastic reinforcement member 35 is in close contact with the inner and outer sheets 14, 15, as well as with the inner and outer sheets 16, 17 defining the peripheral edge 19 of the waist opening without leaving any substantial space between the elastic reinforcement member 35 and fold line 34. The provision of the elastic reinforcement member 35 along the peripheral edge 18 defined by the front and rear strap sections 6, 7 allows the fibrous non-woven material to have elastic stress and breaking force reinforced along the peripheral edge 19 of the waist opening and thereby reduce a chance that the fibrous non-woven material can be easily broken along this peripheral edge 19. In addition, the reinforcing elastic member 35 facilitates the fibrous elastic member to be folded in two, that is, the inner and outer leaves 14, 15 and the inner and outer leaves 16, 17.

If the elastic reinforcement member 35 is provided to be spaced from the peripheral edge 19 of the waist opening, that is, below the peripheral edge 19 as seen in Figure 1, a section of the sheets defined between the peripheral edge 19 of the opening of the waist The waist and the elastic reinforcement member 35 will form a flash, extending out of the circumferential direction R. This flash will be annoying to the eyes and irritate the user's skin. In contrast to this, the configuration of the invention just described is free from the possibility of the formation of any flash, so that the article is clean and capable of protecting the user's skin from unwanted irritation.

A distance from the elastic reinforcement member 35 to the elastic member surrounding the waist 18 adjacent to it in the direction of height Z, as well as a distance between each pair of adjacent elastic members surrounding the

56/85 waist 18 can be in an extension of 8 to 10 mm and the stretching radius of the elastic reinforcement member 35 and the elastic members surrounding the waist 18 can be established in an extension of 1.5 to 3.0.

The strap member 4 provided with the elastic reinforcement member 35 and the elastic members surrounding the waist 18 are combined with the absorbent structure 5 to form the chassis A shown in Figure 1. With reference to Figure 1, the absorbent structure 5 comprises a sheet liquid permeable top 21 defining the inner side 12 of the side facing the user's skin, a liquid impermeable back sheet 22 defining the external side 13 of the side facing the user's clothing and a liquid absorbent core 23 packed by the paper fabric or similar (not shown) where the liquid-absorbent core 23 is permanently attached to at least one of the top 21 and bottom 22 sheets. The liquid-impermeable but moisture-permeable film can be used as the bottom sheet 22 and, in this case, the fibrous non-woven material obtained by molten blowing, bonded stitch and types through other air can be laminated in that to improve user comfort.

The liquid-absorbent structure 5 extends across the region between legs 3 in an ante-posterior Y direction including a first extreme stop 24 and a second extreme part 25 opposite and spaced from each other in the ante-posterior direction Y. The sheet liquid impermeable bottom 22 of the first extreme part 24 is attached to the inner sheet 14 of the front belt section 6 so that a first region of the joint 26 can be defined by a region in which the liquid absorbent structure 5 overlaps the belt section front 6. The liquid-impermeable bottom or rear sheet 22 of the second end part 25 is attached to the inner sheet 16 of the rear belt section 7 so that a second region of the joint 27 can be defined by a region in which the water-absorbent structure liquid 5 overlap the back belt section 7. A subregion of the front waist region 1 except the first joint region and a subregion of the rear waist region 2 except the second joint region 27 defines internal vision regions allowing the user's skin to be seen through the diaper.

The front and rear strap sections 6, 7 are joined to the liquid absorbent structure 5 so that the respective lower ends 20 of the front and rear strap sections 6, 7 open towards the region between legs.

57/85 cooperate with a pair of the lateral edges 28 of the liquid-absorbent structure 5 extending in the anterior-posterior direction Y for a pair of leg openings 29.

Figure 20 is a plan view of the diaper developed in the anterior-posterior direction Y after the respective joints of the lateral edge 10 have been broken. In Figures 20, every elastic reinforcement member 35, the elastic reinforcement members 18, the elastic members surrounding the waist 18 and the elastic members 31 provided along the lateral edges of the region between legs remain under tension and do not lean towards contraction.

As will be apparent from Figure 20, both the topsheet 21 and the backsheet 22 are substantially regular while the liquid absorbent core 23 is substantially hourglass-shaped. In other words, the liquid-absorbent core 23 has its dimension in the transverse direction X gradually reduced towards a transverse centerline Q forking a width of the core 23 so that a dimension of the core 23 is smaller in the vicinity of the transverse centerline Q than in the first extreme part 24 and the second extreme part 25.

Along the opposite side edges 28 of the liquid absorbent structure 5, the upper and lower sheets 21, 22 extend externally on the other side of the liquid absorbent core 23 to form a pair of opposite side flaps 30 each having an enlarged area in the neighborhood of the transverse centerline Q since the liquid-absorbent core 23 is hourglass-shaped. Between the upper and lower sheets 21, 22 the elastic members 31 for the region between legs are fixed under tension so that they extend in the anteriorposterior direction Y along the opposite lateral edges 28. Under contraction of these elastic members 31 for the region between legs , the opposite side edges 28 are placed in close contact around the user's legs and thus the side flaps 30 prevent body residue, such as urine from being leaked from the spaces left between the user's legs and the leg openings 29 (see Figure 18).

The first and second joint regions 26, 27 in which the front and rear strap sections 6, 7 overlap the liquid-absorbent structure 5, the second joint region 27 having a lower area than the area of the first joint region.

58/85 joint 26. Obviously the user's skin will not be seen through the absorbent structure 5 since the liquid absorbent structure 5 contains the liquid absorbent core 23 in it, and lower areas of the first and second joint regions 26, 27 , the greater the region where the user's skin can be seen through the diaper. Usually, the user's dorsal region including the buttock to be covered with the back waist region 2 is more prone to heat obstruction and / or eruption than the abdominal region to be covered with the front waist region 1, and the region of the rear waist 2. In view of this, the diaper according to the present configuration will be constructed so that the region of full view can have a higher area in the region of the rear waist 2 than in the region of the front waist 1 and the permeability in the air may be higher in the rear waist region 2 than in the front waist region 1.

The first region of joint 26 and the second region of joint 27 are dimensioned to have respective areas corresponding to approximately 25% of the areas occupied by the front and rear strap sections 6, 7, respectively. In other words, the respective full view regions defined by the subregions other than the joint regions are mentioned to have respective areas corresponding to approximately 75% of the areas occupied by the front and rear waist regions 1, 2. However, it should be understood that the full view regions can be scaled to have the areas corresponding to at least 40 $ or more of the front and rear waist regions 1, 2 to achieve the desired effect. The areas of the respective regions of full view were measured with the diaper developed as with the reinforcing elastic member 35, the elastic members surrounding the waist 18 and the elastic members 31 for the region between legs being kept under tension or before these elastic members were attached to the diaper. The areas of the front and rear strap sections 6, 7, as well as the areas of the first and second joint regions 26, 27 were also measured under the same conditions as the full view regions. It should be noted that the opposite side edges shared to form a pair of sutures 11 have been left out of the measurement.

The first and second regions of joints 26, 27 are formed substantially in the respective middle parts of the first and second sections of the straps 6,7

59/85 as seen in the transverse direction X so that the liquid absorbent structure 5 is not joined to the front and rear strap sections 6, 7 on the sides of the same as seen in the transverse direction X including the opposite side edges 8, 9 As a result, the full view regions in which the liquid-absorbent structure 5 is absent are defined as two opposing U-shaped square regions, regions opening in the X transversal direction. Then, one of the full view regions extends from the first extreme part 24 of the liquid-absorbent structure 5 externally in the anterior-Y direction. This way, the user's skin can be seen through the diaper worn on the user's body around the user's waist including the opposite side regions , the abdominal region and the dorsal region.

Using the diaper as described above, an inspection report in the form of a questionnaire was carried out with respect to air permeability and a feeling of indifferent to the orifices. While the inter and external leaves 14, 15 and 16, 17 showing a total light transmission of approximately 66% were described in reference to TABLE 1, a desired full view effect was still obtained by the leaves showing a total light transmission of 55% or more. Taking this into account, the diaper according to this first configuration presenting a total light transmission of 55% or more and the diaper presenting a total light transmission of less than 55% were tested on babies and the questionnaires were sent to the parents “free obstruction to the orifices ”? and “cooled to the orifices”? The parents' answers are indicated in TABLE 2. With respect to the questionnaire “free from obstruction to the holes”, the answers were obtained from 10 (ten) parents and in relation to the questionnaire “cooled to the holes” ?, the answers were obtained of thirteen (13) parents.

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[TABLE 2] (1) Free from orifice obstruction?

Diaper having light transmission lower than 55% Diaper according to the invention Free from obstruction to all holes 0 3 free from obstruction of the holes 1 6 Neutral to holes 1 1 Not free from obstruction to the holes 5 0 Not completely free from obstruction to the holes 5 0 (2) indifferent to the holes? Diaper having light transmission lower than 55% Diaper according to the invention Very indifferent to the holes 0 4 Indifferent to the holes 3 6 Neutral to holes 2 3 Not indifferent to the holes 6 0 Not totally indifferent to the holes 2 0 As will be apparent from FABELA 2, to the questionnaire “Free from obstruction to

holes ”? with respect to the diaper presenting a total light transmission lower than 55%, one (1) father answered “Free from obstruction to the holes” and a total of eight (8) parents answered “Not free from obstruction to the holes” and “Not totally free of obstruction to the holes ”. Regarding the diaper according to the first configuration of the invention, a total of nine (9) parents answered “Totally free from obstruction to the holes” and “Free from obstruction to the holes” and

61/85 none of the parents answered “Not free from obstruction to the holes” or “Not totally free from obstruction to the holes”. As for the questionnaire "Indifferent to the orifices", with respect to the diaper presenting a total light transmission below 55%, three (3) parents answered "indifferent to the orifices" and a total of eight (8) parents responded "Not indifferent to the orifices ”or“ Not totally indifferent to orifices ”. Regarding the diaper according to this first configuration of the invention, ten (10) parents answered “Very indifferent to the orifices and“ Indifferent to the orifices ”and none of the parents answered“ None indifferent to the orifices ”or“ None indifferent to the totality of the orifices ” . As apparent from the results of the questionnaires, 90% of the parents were positive in the responses to the diaper according to this configuration of the invention with respect to the free property of obstruction to the orifices and approximately 77% of the parents were positive in the response to the diaper according to this first one. configuration of the invention in relation to the regardless of the holes.

The results of the questionnaires indicated in TABLE 2 demonstrating that the diaper that is free of obstruction and indifferent to at least the orifices can be provided by the improvement in the transmission of light Pa at a level of 55%. However, said improvement of the total light transmission of the fibrous non-woven material often results in a decrease in the subutilized material, as well as in its base weight, and consequently, the fibrous non-woven material will be correspondingly prone to rupture. According to this first configuration of the invention, said problem is solved by the provision of the peripheral edge 19 of the waist opening which, on the contrary, will be more proposed to break with the elastic reinforcement member 35 so that the fibrous non-woven material can be reinforced. along the peripheral edge 19 of the waist opening and protected from breakage. In addition to the elastic reinforcement member 35, the front and rear waist regions 1, 2 are provided with a plurality of elastic members surrounding the waist 18 so that the inner and outer sheets 14, 15, 16, 17 of the waist regions front and rear 1, 2 are reinforced by these elastic members surrounding the waist 18. The reinforcing elastic member 35 is substantially the same as the elastic member surrounding the waist 18 in material as well as in configuration and thus a cost for separate preparation elastic member 35 can be

62/85 saved, and in addition it will not be required to increase the number of steps for production, since the reinforcing elastic member 35 and the elastic members surrounding the waist 18 can be attached to the diaper at the same time.

The elastic reinforcement member 35 as a reinforcement means may be replaced by an elastic sheet or non-elastic fibrous non-woven material without departing from the scope of the invention. The use of the elastic member or the elasticized sheet as a reinforcement means allows the strap member 4 defining the regions of the front and rear waists 1, 2 to contract in the circumferential direction R and in this way 10 prevent the leakage of body waste on the other side of the belt. waist opening.

While this first configuration in the form of the so-called pants type diaper is now described, it will be apparent to a person skilled in the art, aware of the state of the art that the harmonization of this first configuration will also be applied to the open type diaper. While the strap member 4 defined 15 the front and rear waist regions 1,2 and the structure 5 defining the region between legs 3 has been described to be separately prepared and then to be assembled together, being possible to form the regions of the front and back waists back and the region between legs of the same member. For example, it will be possible to form the regions of the front and rear waists and the 20 regions between legs by the inner and outer leaves and then place the liquid-absorbent structure on the side facing the user's skin or to press the liquid-absorbent structure between the leaves internal and external. In any case, the regions of complete view for the user's skin, preferably occupy at least 40% or more of the regions of the front and rear waists. 25 While the regions of the front and rear waists are defined by the sections of the front and rear wraps 6, 7, respectively, according to this configuration, it will be possible for the other diaper type pants or open type to define regions extending from the edge peripheral of the descending opening of the waist by approximately 27% in the anteroposterior direction as the regions 30 of the front and rear waists, respectively.

While the inner and outer sheets have been described to be formed by simply folding the fibrous non-woven material in two, it will be possible to link separate sheets together to form the inner and outer sheets. In any

In such a case, these inner and outer sheets may be provided along the peripheral edge of the waist opening with the reinforcing means to ensure desired resistance of the fibrous non-woven material. While the inner and outer sheets preferably comprise the liquid absorbent fibrous nonwoven material, it is not essential for the fibrous nonwoven material to have liquid absorbent property.

While the single sheet of absorbent non-woven material before being folded into itself to form the inner and outer sheets 14, 15, 16, 17 has a total light transmission of 80% or more according to this first configuration, the smallest limit total light transmission of 55% or more for the intended full view effect on the user's skin can be achieved as long as the fibrous non-woven material shows total light transmission of 70% or more. While the areas of the first and second regions of the joints 26, 27 in which the liquid-absorbent structure 5 overlapping the front and rear strap sections 6, 7, respectively, 25% of the front and rear strap regions 1, 2, respectively , according to the first configuration, the areas of the first and second regions of the joints 26, 27 are not limited to the said value and preferably in a range of 15% to 30%. The first and second regions of joints 26, 27 may extend to the peripheral edge 19 of the waist opening. In other words, the liquid-absorbent structure 5 may be attached to the strap member 4 so as to extend from the front peripheral edge 19 of the waist opening to the rear peripheral edge 19 of the waist opening. In this case, the area of the full view region for the user's hair will be reduced but the liquid-absorbent structure will be correspondingly enlarged and thus a preventive effect against leakage of body waste will be highlighted.

Figure 21 shows a second configuration of the present invention where the inner and outer sheets 14, 15, as well as the inner and outer sheets 16, 17 are provided with a plurality of milled holes 36 extending through these sheets in a direction of the thickness of the diaper. The other characteristics are similar to those of the first configuration and details of it will not be described. The milled holes 36 each have a diameter of 1 to 2 mm and are distributed between the entire lengths of the inner and outer sheets 14, 15 and the

64/85 outer leaves 16, 17. These milled holes 36 are harmonized at regular intervals of 8 to 10 mm in the anterior posterior Y direction and at regular intervals of 5 to 20 mm in the transversal X direction.

Figure 22 is a sectional view taken along a line XXII-XXII of Figure 21. As shown, the milled holes 36 extend through the inner and outer sheets 14,15, as well as the inner and outer sheets 16, 17 in the direction of the diaper thickness. The milled holes 36 are formed between the reinforcing elastic members 35 and the adjacent elastic member surrounding the waist 18 and between each pair of the adjacent elastic members surrounding the waist 18.

The formation of these milled holes 36 allows the user's skin to be visually recognized through these milled holes 36. The inner and outer sheets 14, 15, 16, 17 presenting a total light transmission of 55% or more allows the user's skin to be seen through these sheets and, in addition, the milled holes 36 allow the skin to be visually recognized and the cooling of the holes can be provided. By the formation of the milled holes 36 between the elastic members 18, 35 there will be no concern that the effect of complete vision for the user's skin may distort the presence of the elastic members. It should be understood that some of these milled holes 36 may be formed so as to overlap the reinforcing elastic members 35 of the elastic members surrounding the waist 18.

While the milled holes 36 are distributed over the entire regions of the inner and outer sheets 14, 15, 16, 17 according to this second configuration, it will not be essential to distribute these milled holes 36 over the entire regions since these milled holes 36 they are formed in the region in which the liquid-absorbent structure 5 is not present.

<Preferred Fourth Aspect Settings>

Details of the article of clothing absorbent of the body fluid of the disposable pants type according to the invention will be more fully understood from the description of the pants type diaper made here as a typical configuration of said article of clothing in reference to the attached drawings.

Figure 23 is a perspective view of a partial cut of the pants type diaper

1. The pants-type diaper 1 comprises a cover member of the waist region 2 and an absorbent panel of body fluid 3. In Figure 1, double arrows

65/85 in heading A, B and C being orthogonal to each other respectively indicate longitudinal, transverse and vertical directions of the trouser-type diaper 1. The cover member of the waist region 2 includes a front member 6 defining a region of the front waist and a rear member 7 defining a region of the rear waist. These members 6, 7 respectively have opposite lateral edges transversely 8, 8 and 9, 9 placed flat and welded together along the joints 10 intermittently aligned in the vertical direction C so as to form an annular structure. Each of the front 6 and rear 7 members comprises an inner sheet 11 and an outer sheet 12 sandwiching a plurality of elastic members surrounding the waist 15 extending under tension along the direction surrounding the waist. These elastic members 15 are attached to at least the inner sheet 11 by means of the heat-melted adhesive (not shown). The panel member 3 has a front end region 21 attached to the inner sheet 11 of the front member 6 by means of the hot melt adhesive 16 (see Figure 3), a rear end region 22 attached to the inner sheet 11 of the back member 7 via the heat-melt adhesive 16 and an intermediate region 23 extending between these ends 21, 22 in order to define a region between legs. The panel member 3 is formed along both sides thereof in the transverse direction B with side flaps 24 between which an absorbent pad of body fluid 26 extends. The side flaps 34 form leakage barriers 24 adapted to prevent body fluids from flowing on the internal surface of the body fluid absorbent pad 26 in the transverse direction B and, as a result, leaking from the sides.

In the pants type diaper 1 comprising the front member 6, the rear member 7 and the panel member 3 in the manner as described above, the front member 6 and the rear member 7 cooperating with each other to form the waist opening 27 while the member front 6, rear member 7 and panel member 3 cooperate together to form a pair of leg openings 28.

The cover member of the waist region 2 is formed with a plurality of folds 29 when the elastic members contract. Imaginary lines indicate the cover member of the waist region 2 with its diameter enlarged when diaper 1 is worn on the user's body.

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Figure 24 is a plan view of a partial section of diaper 30 corresponding to diaper 1 of Figure 23 with the front member 6 and the rear member 7 separated from each other along the joints 10 and flatly developed together with the panel member 3 in the longitudinal direction A, as well as in the transverse direction B. The front member 6 and the rear member 7 are of the same rectangular shape and the same size. The elastic members 15 allocated to the respective members 6,7 comprise upper elastic members 15a extending along the peripheral edge of the waist opening 27 through the member 6, 7, the lower elastic members 15b extending along the peripheral edges of the openings of the legs 28 through the member 6, 7 so as to intersect with the lateral edges 33a of a core 33 defining the respective lateral edges of the body fluid absorbent pad 26, and intermediate elastic members 15c circumferentially extending in the direction surrounding the waist between the upper and lower elastic members 15a, 15b. As will be seen in Figure 23, some of the intermediate elastic members 15c intersect with the lateral edges 33a of the core 33 and the other one of the same does not intersect with the lateral edge 33a of the core. The number as well as the extension of the elastic members respectively constituting the upper and lower intermediate elastic members 15a, 15b may be selected so that a desired convenience of the covering member from the waist region 2 to the user's body can be obtained. The inner sheet 11 and the outer sheet 12 on the front member 6 and the rear member 7 are formed by the material of the sheet as non-woven material, woven material or plastic film preferably by appropriate air-permeable sheet material. The sheet material will preferably be made of thermoplastic synthetic resin allowing the sheet materials to be welded together.

The panel member 3 is also rectangular in shape comprising an internal liquid-permeable cover sheet 31, an external liquid-impervious cover sheet 32, and a liquid-absorbent core 33 sandwiched between these cover sheets 31 extending externally from the other. side of a peripheral edge of the substantially rectangular core 33, then laid flat together with the outer peripheral edge of the core 33, and bonded together by means of the heat-melt adhesive 36 to form a pair of flaps

67/85 side 24, a front end flap 37 and a rear end flap 38. Each of these side flaps 24 extending externally in the transverse direction B of the associated side edge 33a of the core 33 and having a defined proximal edge 40a adjacent to the associated edge lateral 33a of the core 33 and the free edge 40b extended in the longitudinal direction A parallel to the proximal edge 40a. Along the free edge 40b, at least one elastic member of the region between legs 43 is sandwiched between the inner cover sheet 31 and the outer cover sheet 32 so as to extend in the longitudinal direction A. This elastic member of the region between legs 43 is attached under tension to at least one of these cover sheets 31, 32 by means of the heat-melted adhesive (not shown). A dimension W from the proximal edge 40a to the free edge 40b of the side flap 24 is substantially in a dimension of 15 to 50 mm depending on the diaper made for baby or adult.

From the panel member 3, the front end region 21 overlaps the front member 6 and is attached to the latter where the outer cover sheet 32 in the front end region 21 is attached to the inner sheet 11 of the front member 6 by means of the heat-melted adhesive 16 applied to the inner sheet 11 in a region of the front member 6 superimposed by the extreme front region 21 to form a band-shaped adhesive zone. Similarly, the rear end region 22 overlaps the rear member 7 being attached to the latter where the outer cover sheet 32 in the outer end region 22 is connected to the inner sheet 11 of the rear member 7 by means of the heat-melted adhesive 16 applied to the inner sheet 11 in a region of the rear member 7 overlapped by the rear end region 22. The front end region 21 comprises parts of the respective side flaps 24, the front end flap 37 and a part of the core 22 where the side flaps 24 extend in the transverse direction B superimposing in this state the lower elastic members 15b through the inner sheet 11. The side flaps 24 contract from this state towards the side edges 33a of the core 33 to form folds 41 (see Figure 25) like the members lower elastics 15b of the front member 6 contracting in the transverse direction Β. The rear end region 22 comprises parts of the respective side flaps 24 of the panel member 3, the rear end flap 38 and a part of the core 33 where the side flaps 24 extend in the direction

68/85 transversal B and overlapping in this state the lower elastic members 15b through the inner sheet 11. The lateral flaps 24 in the extreme rear region 22 contract from this state towards the lateral edges 33a of the core to form folds 42 (see 25) when the lower elastic members 15b of the rear member 7 contract.

Figure 25 is a plan view of the flat developed diaper as shown in Figure 24 with the elastic members 15 and the elastic members of the region between legs left elastically contracted. From the diaper 30 flatly developed in this way, the side edges 8 of the front member 6 can be joined with the side edges 9 of the rear member 6 to obtain the diaper 1 of Figure 25. With reference to Figure 25, the contraction of the elastic members 15 motivates the front member 6 and the rear member 7 to be formed with folds 29 as shown in Figure 23 and, consequently, apparent dimensions of these members 6, 7 in the transverse direction B being reduced in relation to their current dimensions. Specifically, the contraction of the elastic members of the region between legs 43 motivates the panel member to be substantially U-shaped with the outer cover sheet 32 externally, that is, with the inner cover sheet 11 internally as seen in Figure 23 , and consequently, an apparent dimension of the panel member 3 in the longitudinal direction A being reduced in relation to its current dimension in Figure 24. In the region of the panel member 3 overlapping the front member 6, the side flaps 24 comprising the inner cover sheet 31 and outer cover sheet 32 both being easily retracted in the transverse direction B with the formation of folds 41 when the elastic members 15b contract. Consequently, the dimension W (see Figure 24) measured between the proximal edge 40a and the free edge 40b is apparently reduced. Furthermore, in the region of the panel member 3 overlapping the rear member 7, the side flaps 24 curved in the transverse direction B with the formation of folds 42, and consequently, the dimension W being apparently reduced. The body fluid absorbent pad 26 on the panel member 3 will not be deformed like the side flaps 24 serving to retract the contraction of the lower elastic members 15b and the intermediate elastic members 15c since this pad 26 extended between the

69/85 side flaps 24, 24 contain core 33 in them. Therefore, the regions of the body fluid absorbent pad 24 respectively overlapping the front member 6 and the rear member 7 curved in the transverse direction and a substantially lower factor than that of the side flaps 24, 24. As a result, none of the folds will appear in these regions or, if they appear, the number of folds will be very small. With reference to Figure 3, the front member 6 and the rear member 7 both stretched in the transverse direction B and parts of the user's legs 50 being indicated by imaginary lines where these two members 6,7 are stretched to their dimensions as shown in Figures 24. The user's legs 50 indicated by the imaginary lines suggest that the user's legs have been inserted into the respective leg openings 28 (see Figure 23) when the pants-type diaper 1 has been worn on the user's body.

In the course of the diaper garment 1 of Figure 23 comprising the member covering the waist region 2 and the panel member 3 constructed as described above, the covering member of the waist region 2 is deformed under the stretching of the elastic members 15 to form a large ring as indicated by the imaginary lines in Figure 23. The panel member 3 is inserted into the region between the user's legs so that the side flaps 24 in the intermediate region 23 can be guided towards the user's groin (not shown) until that the side flaps 24 come into contact with the user's groin. On the other hand, the side flaps 24 in the extreme front and in the extreme rear region 22 are stretched in the transverse direction B in order to dissipate the folds 41, 42 as seen in Figure 25 under stretching of the lower elastic members 15b in the transverse direction B as seen in Figure 23, since the side flaps 24 in the front and rear extreme regions 21, are integrated with the lower elastic members 15b through the inner sheet 11. In response to the stretching of the side flaps 24 in the front and rear regions 21, 22, a portion 45 of the respective free edges 40b of the side flaps 24 in the intermediate region 23 supported in the vicinity of the lower elastic members 15b in the front member 6 and parts of the same supported in the vicinity of the lower elastic members 15b in the rear member 7 (see Figures 23 and 24) are moved in the transverse direction B to the positions

70/85 indicated by the imaginary lines of Figures 23 and 25. In this state, the parts 47 defined between the parts 45 and the parts 46 being positioned between the legs of the user 50 coming into contact with the inner sides of the legs of the user 50 in the vicinity their groins. Specifically, in the case of the diaper according to the invention, the contractile and elastically stretched free edges 40b more preferably its sides coming into close contact with the user's legs in the vicinity of the groin rather than coming in next contact below the user's legs. In this way, even when diaper 1 more or less slides downwards after being worn on the user's body, there will be no concern that the free edges 40b of the side flaps 24 may also slide downward and the body fluid seeps through the spaces that may otherwise be formed between the free edges 40b and the user's legs. If the free edges 40b still slide down, said slip will occur along the user's legs without being spaced from the user's legs. Therefore, in this case, it will not be worrying that leakage of body fluids may occur between the free edges 40b and the user's legs.

As will be understood from the above description, the front and rear members 6, 7, as well as the panel member 3 in the diaper of Figure 23 are exceptionally of unique rectangular structures allowing the respective materials to be used without the occurrence of waste. In addition, the finished diaper 1 is enabled to prevent body fluids from leaking beyond the peripheries of the leg openings.

Figure 26 is a view similar to Figure 24, illustrating a preferred embodiment of the invention. In the pants type diaper 1 of Figure 26, the lower elastic members 15b and some of the intermediate elastic members 15c do not fully extend through the panel member 3 and preferably extend from the side edges 8, 9 of the front and rear members 6, 7 for positions slightly beyond the respective points of intersection with the lateral edges 33a of the core 33. The diaper 1 according to this configuration is suitable to provide the outer surface of the outer sheet 12 with decorative engravings or the like since the core is rarely formed with folds even when the lower elastic members 15b and the intermediate elastic members 15 have relatively high contractile strength.

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Figure 27 is also a view similar to Figure 25, illustrating another preferred embodiment of the invention. The front member 6, as well as the rear member 7 in the pants type diaper 1 of Figure 27 being formed substantially as a hexagon. The lower elastic members 15b under tension extend obliquely from the side edges 8, 9 of the front and rear members 6, 7 to the side edges 33a of the core contained in the panel member 3 and connected to the inner sheet 11 and the outer sheet 12 by heat-melt adhesive (not shown). The side flaps 24 are attached to the inner sheet 11 by means of the hot melt adhesive 16 and the free edges 40b being substantially integrated with the lower elastic members 15b by means of the inner sheet 11.0 front member 6 and the rear member 7 are provided with the upper elastic members 15a under tension.

While the side flap 24 comprises the inner cover sheet 31 and the outer cover sheet 32 in the illustrated configuration, the present invention will not be limited to said configuration and, for example, it will be possible to replace the illustrated side flap 24 by the side flap formed by external cover sheet 32 isolated or the side flap formed by the differentiated sheet of both intera 31 and external cover sheets 32.

<Preferred Aspect Settings>

Figures 30 to 34 illustrate a first configuration of the absorbent article according to the present invention in the form of a disposable diaper as one of the typical examples of the absorbent article. Figure 30 shows the diaper currently worn on the user's body as partially cut for convenience of explanation. As shown, the diaper comprises a strap member 4 in the annularly extended in a circumferential direction R to constitute a region of the front waist 1 and a region of the rear waist 2 and a liquid-absorbent structure 5 extending between the regions of the front and rear waists 1.2 pair constitute a region between legs 3.

The belt member 4 comprises a section of the front belt 6 supported in the region of the front waist 1 and a section of the rear belt 7 supported in the region of the rear waist 2, where the lateral edges 8 of the section of the opposite front belt in the circumferential direction R and the corresponding side edges 9 of the rear strap sections 6 being placed flat and joined together in sutures 11 each

72/85 one comprising a plurality of junction zones 10 harmonized along these side edges 8, 9 intermittently in a direction of height Z to define an opening in the waist.

The front belt section 6 comprises an inner sheet 14 defining an inner side on the side facing the user's skin, an outer sheet 15 defining an outer side 13 on the side facing the wearer's clothing and a plurality of elastic members surrounding the waist wire type 18 sandwiched between these inner and outer sheets 14, 15 and serving as a contractile medium surrounding the waist. The inner and outer sheets 14, 15 are actually formed by folding a single layer of fibrous non-woven material along a peripheral open edge 19 of the back of the waist opening into itself in order to press the elastic members surrounding the waist 18.

Similarly, the rear belt section 7 comprises an inner sheet 16, an outer sheet 17 and the elastic members surrounding the waist 18 sandwiched between these sheets 16, 17. The inner and outer sheets 16, 17 are also actually formed by the fold of a single layer of fibrous non-woven material along a peripheral open edge 19 of the back of the waist opening itself. The fibrous non-woven material may be selected from a group of those usually used in this technical field such as blow-molded non-woven material, point-bound non-woven material, and non-woven material through air.

The front and rear strap sections 6, 7 are provided with the elastic members surrounding the waist 18 each extending in a circumferential direction R. These elastic members 18 are intermittently harmonized in a direction of height Z, that is, from the open edges 19 of these waist sections 6, 7 on the side of the waist opening to open edges 20 thereof on the side of the region between legs. These elastic members surrounding the waist 18 are fastened under tension to the strap sections 6, 7 in order to tilt these sections to retract in the circumferential direction R. Preferably, these elastic members surrounding the waist 18 are spaced from each other by a distance of 8 to 10 mm in the direction of height X and attached to strap sections 6, 7 under tension corresponding to a stretching radius of 1.5 to 3.0.

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The elastic members surrounding the waist 18 are attached to at least one of the inner and outer sheets 14, 15 and at least to one of the inner and outer sheets 16, 17 by means of the adhesive (not shown).

The liquid-absorbent structure 5 comprises a liquid-permeable top sheet 21 defining the inner side of the side facing the user's skin, a liquid-impermeable back sheet 22 defining the outer side 13 of the side facing the user's clothing and a core liquid absorbent 23 sandwiched between these upper and posterior sheets 21,22 and wrapped in tissue paper (not shown) or similar, where the liquid absorbent core 23 is permanently attached to at least one of the upper and posterior sheets 21,22. It will be possible to use liquid-impermeable but moisture-permeable film, such as the backsheet 22 and, in this case, said film may be laminated with the fibrous non-woven material obtained by an appropriate process such as the so-called extruded bonding process or process through air to enhance the feel of the backsheet 22 against the wearer's skin.

The liquid-absorbent structure 5 extends across the region between legs 3 in a longitudinal direction Y including a first end 24 and a second end spaced and opposite each other in the longitudinal direction Y. The liquid impervious backsheet 22 constituting the first end 24 is placed on the inner sheet 14 constituting the front strap section 6 to define a first overlapping region 26 and the liquid impermeable back sheet 22 constituting the second end 25 being placed on the inner sheet 16 constituting the back strap section 7 to define a second overlapping region 27. In these first and second overlapping regions 26, 27, the front and rear strap sections 6, 7 are joined to the liquid-absorbent structure 5 by means of a plurality of junction zones 32 so that the respective edges open 20 of the front and rear strap sections 6, 7 on the side of the region between legs cooperate with a pair of lateral edges they are opposite 28 of the liquid absorbent structure 5 extended in the longitudinal direction to form a pair of leg openings 29.

Figure 31 is a plan view of the diaper flatly developed after the junction zones 10 intermittently harmonized along the side edges of the diaper as shown by Figure 30 having been broken. With reference to

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Figure 31, the elastic members surrounding the waist 18, as well as the elastic members 31 for the region between legs are shown under tension without tilting the sheets for retention.

As shown, the top and rear sheets 21, 22 of the liquid-absorbent structure 5 have substantially rectangular shapes while the liquid-absorbent core 23 has a substantial hourglass shape. As a result, the liquid-absorbing core 23 is partially cut so as to have opposite curved side edges in such a way that a dimension of the liquid-absorbing core 23 as measured in the transverse direction X is less than 23 in the vicinity of a transverse centerline Q forking the core 23 in the longitudinal direction Y than at the first and second ends 24, 25.

In the vicinity of the opposite side edges 28 of the liquid-absorbent structure 5, the upper and rear sheets 21, 22 extend externally on the other side of the liquid-absorbent core 23 to form a pair of opposite side flaps where the side flap 30 has a relative large area in the vicinity of the transversal central line Q since the liquid-absorbent core 23 has the shape of an hourglass. The elastic members 31 for the region between legs are sandwiched between the upper and rear sheets 21, 22 so as to extend in the longitudinal direction along the opposite side edges 28 and the sheets 21,22 are fixed under tension. Under the contraction of these elastic members for the region between legs, the opposite side edges 28 are placed in close contact around the user's legs and the side flaps 30 serving to prevent body waste such as urine from leaking through spaces that would otherwise will be left between the leg openings 29 3 the user's legs (see Figure 30).

The first and second overlapping regions 26, 27 are substantially defined in the respective median parts of the front and rear strap sections 6, 7 as seen in the transverse direction X, leaving the opposite side parts including the opposite side edges 8, 9 to which the structure liquid absorbent 5 is not directly bonded.

The length of the first and second overlapping regions 26, 27 measured in the longitudinal Y direction will be approximately 85% of the total length of the

75/85 open edge 19 of the front belt section 6 on the side of the waist opening to the open edge 19 of the rear belt section 7 on the side of the waist opening.

The first overlapping region 26 is defined by the upper and lower open edges 40, 41 spaced and opposite each other in the longitudinal direction Y and the lateral edges 44 spaced and opposite each other in the circumferential direction R while the second overlapping region 27 is defined by the top and bottom edges 42, 43 spaced and opposite each other in the longitudinal direction and side edges 44 spaced and opposite each other in the circumferential direction R. The top edge 40 of the first overlapping region 26 corresponds to the first end 24 of the absorbent structure at liquid 5 and the bottom edge 41 corresponds to the open edge 20 of the front belt section 6 on the side of the region between legs. The opposite side edges 44 of the respective overlapping regions correspond to the opposite side edges 28 of the liquid absorbent structure 5. The upper edge 42 of the second overlapping region 27 corresponds to the second end 25 of the liquid absorbent structure 5 and the lower edge 43 corresponds to the edge open 20 from the rear waist section 7 on the side of the region between legs. The opposite side edges 44 correspond to the opposite side edges 28 of the liquid absorbent structure 5.

In the first and second overlapping regions 26, 27, the backsheet 22 of the liquid-absorbent structure 5 is bonded to the inner sheets 14, 16 of the front and rear strap sections 6, 7 in the respective junction zones 32 by means of the adhesive. The junction zones 32 are harmonized intermittently in the transverse direction X and the first free junction zone 45 in which no adhesive is present is defined between each pair of adjacent junction zones 32. Each junction zone 32 preferably has a dimension of 3 to 50 mm as measured in the X cross direction. If this dimension is less than 3 mm, it will be impossible to ensure a desired sufficient adhesive effect to prevent the leaf from defoliation. If this dimension exceeds 50 mm, it will be impossible to space each pair of the adjacent junction zones by a desired distance and ensure a desired dimension of the first junction free zone 45 as measured in the X cross direction. The first junction free zone 45 preferably it has its dimension in the transversal X direction in a range of 3 to 15 mm. If this dimension is less than 3 mm, it will be difficult for

76/85 the first junction free zone 45 forms a passage channel as described in more detail and if this dimension exceeds 15 mm, it will be impossible to ensure a desired width of the junction zone 32.

In the vicinity of the upper and lower edges 40, 41 and 43, 43 of the first and second overlapping regions 26, 27, respectively, the second free junction zones 46, 47 containing no adhesive are defined. These second free junction zones 46, 47 extend over entire areas of the first and second overlapping regions 26, 27 in the X transverse direction. A dimension of the upper and lower edges 40, 41, 42, 43 for the ends of the respective junction zones 32 in the longitudinal direction Y will be approximately 10 mm. It should be noted that this dimension was selected in consideration of a preventive effect against unintentional defoliation and should not be constructed to be limited to this value. Specifically, this dimension can be in a limit of 5 mm to 30 mm.

The belt member 4 is provided over the entire extended area from the open edge 19 on the side of the waist opening to the open edge 20 on the side of the region between legs with the elastic members surrounding the waist 18. Then these elastic members surrounding the waist 18 are extend through the first and second overlapping regions 26, 27 so as to be distributed over the entire areas of these regions 26, 27 in the longitudinal direction Y. The elastic members surrounding the waist 18 completely extended in the transversal direction X between the opposite lateral edges 8, 9 of the respective sections of the straps 6, 7 so that the elastic members surrounding the waist 18 are distributed over the entire areas of these regions 26, 27 in the transversal direction X. Thus, the entire areas of the first and second overlapping regions 26, 27 are subject to the contractile force of the elastic members surrounding the waist 18.

The first and second overlapping regions 26, 27 contain a pair of ends 23a, 23b of the liquid-absorbing core 23 spaced and opposite each other in the longitudinal direction Y so that the liquid-absorbing core 23 is also subject to the contractile force of the members elastics around the waist 18.

Figure 32 is a sectional view taken along a line XXXII-XXXII of Figure 31. While Figure 32 shows the front waist region 1, the region

77/85 of the rear waist 2 will also be described with reference to Figure 32 since the region of the rear waist 2 is similar to the region of the rear waist 1 while the basic construction is concerned. Figure 32 (a) illustrates the elastic members surrounding the waist 18 keeping them in a stretched state, and, as will be apparent from Figure 32 (a), the elastic members surrounding the waist 18 are sandwiched between the outer sheets 15, 17 and the inner sheets 14, 16 of the front and back waist sections 6, 7, respectively, and attached to these sheets by means of adhesive (not shown). The inner sheets 14, 16 are connected to the back sheet 22 of the liquid-absorbing structure 5 by means of intermittently harmonized junction zones. Between each pair of adjacent joint zones 32, the first free joint zone 45 will be defined.

Figure 32 (b) illustrates the elastic members surrounding the waist 18 contracted in the direction indicated by an arrow from the state of Figure 32 (a). Under contraction of the elastic members surrounding the waist 18, the upper and posterior sheets 21, 22 and the liquid-absorbent core 23 yield in the first junction-free zones 45 to project upward as seen in Figure 32 (b) against the skin consequently, a plurality of first depression-like passageways between the top sheet 21 and the user's skin. A plurality of protuberances each formed between a pair of the first adjacent passage channels34 come into contact with the user's skin, but the first depression-like passage channels 34 are spaced from the user's skin so that a plurality of cavities can be formed between these first kennels 34 and the user's skin. In response to the upward projection of the liquid-absorbent structure 5 towards the user's skin in the first junction-free zones 45, a plurality of secondary cylindrical passageways35 are formed between the inner sheets 14, 15 of the front and rear strap sections 16 , 17 respectively, and the backsheet 22 of the liquid-absorbent structure 5.

Figure 33 is a sectional view taken along a line XXXIII-XXXIII of Figure 31, that is, showing the junction zones 32 in a sectional view. While Figure 33 shows the front waist region 1 as worn on the user's body, the rear waist region 2 will also be described with reference to Figure 33 since the rear waist region 2 is similar to

78/85 front waist region 1 so that the basic construction is concerned. As will be apparent from Figure 33, the first passageways 34 are formed along the respective junction zones 32 extending from the first and second ends 24, 25 of the first and second overlapping regions 26, 27, respectively, to the open edges 20 on the side of the region between legs towards the height. Therefore, each of the first passageways 34 has an end 34a open towards the front or rear waist region 1, 2 and the other end 34b of it opening towards the region between legs 3. Thus, these first passage channels 34 allow the amount of steam generated in the region between legs 3 to be guided along the abdominal and dorsal sides towards the front and rear waist regions 1,2.

Figure 34 is a sectional view taken along a line XXXIV-XXX-IV of Figure 31, showing the first junction-free zones 45 in a sectional view. While Figure 34 illustrates the front waist region 1 as worn on the user's body, the rear waist region 2 will also be described with reference to Figure 33 since the rear waist region 2 is similar to the front waist region 1 while the basic construction is concerned. The secondary passageways 35 are formed along the junction free zones 45. Through the second junction free zones 46, 47, each of the passage channels 35 has an end 35a communicating with the front or rear waist region 1, 2 and the other 35b communicating with the region between legs 3 and then communicating with the outside of the diaper through the open edges 20 the sections of the front and rear straps 6, 7 on the side of the region between legs. Specifically, along the upper and lower edges 40, 41 and 42, 43 of the first and second overlapping regions 26, 27, respectively, the amount of steam generated in the diaper can be guided through the second junction-free zones 46 to the secondary passage channels 35 and through the second free junction zones 47 to the outside of the diaper starting from the bottom type as seen in Figure 34.

According to the present invention, the amount of steam generated in the region between legs 3 is guided through the first passageways 34 to the regions of the front and rear waist 1, 2 while the amount of steam

79/85 established in the regions of the front and rear waist 1,2 being guided through the secondary passage channels 35 to the outside of the diaper. Even if the liquid absorbent has absorbed urine discharged by the user and, as a result, a temperature inside the diaper around the region between the legs increases, the amount of steam generated in the region between the legs can be guided through the first and second channels passage 34, 35 to the outside of the diaper. In this way, the humidity sensitivity experienced by the user can be relieved.

The first through channels 34 and the secondary through channels 35 are formed by the upper and rear sheets 21, 22 of the liquid-absorbent structure and the liquid-absorbent core 23 and these first and second channels of passage 34, 35 are rarely unsuccessful under the user's body or other load since the liquid-absorbent core 23 in particular has a greater inflexibility than that of the other sheets.

In the vicinity of the upper and lower edges 40, 41, 42, 43 of the first and second overlapping regions 26, 27, respectively, the second junction-free zones 46, 47 are distributed over the entire areas of these overlapping zones 25, 27 in the transverse direction X. These second joint free zones 46, 47 allow the secondary through channels 35 to communicate flowing with each other. Therefore, even if the ends 35a or the other ends 35b of the secondary passage channels 35 are particularly ruptured due to the movement of the user's body, it will not be perceived that the breathability may be impaired due to the said situation, since the remaining secondary channels of passages are maintained to communicate fluidly with each other through junction free zones 46, 47.

While the elastic members surrounding the waist are used as contractile means surrounding the waist in the configurations as described above, it will be possible without departing from the scope of the invention to use other means such as an elastic sheet. In addition, the belt member itself is formed of elasticized non-woven material or a composite sheet consisting of elastic non-woven material and non-elastic non-woven material so that the belt member can function as contractile means surrounding the waist.

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While the elastic members surrounding the waist 18 described above to be distributed substantially over the entire area of the belt member 4, it will be possible to distribute these extended elastic members 18 through at least the parts of the first and second overlapping regions 26, 27 overlapping the structure liquid-absorbent 5 and thereby tilting the liquid-absorbent structure 5 for contraction. The entire areas of the first and second overlapping regions 26, 27 in the transverse direction X may be subject to the contractile force of the elastic members surrounding the waist 18 to form many more channels of passage in the transverse direction X of these overlapping regions and thus improve the breathability of the diaper .

While the first and second overlapping regions 26, 27 described above to be provided along the upper and lower edges 40, 41, 42, 43 of them with the second free junction zones 46, these second free junction zones 46 can be eliminated without departing from the scope of the invention.

Instead, it will be possible to distribute the first and second passage channels 34, 35 over the entire areas of the first and second overlapping regions 26, 27, respectively, in the longitudinal direction Y so that the region between legs 3 can directly flow in communication with the regions of the front and rear waists 1, 2 in the junction free zones 45. In any case, it will be important that the amount of steam generated in the region between legs 3 can be guided through the first passage channels 34 to the regions of the waists front and rear 1, 2 and the amount of steam established in the regions of the front and rear waists 1, 2 can be guided to the outside of the diaper through the secondary passage channels.

While the junction zones described above to be formed by connecting the front and rear strap sections 6, 7 to the liquid-absorbent structure 5 by means of the heat-melted adhesive, the type of adhesive will not be limited to that of the heat-melted, and the instead of using the adhesive, it will be possible to use the ultrasonic sealing technique to form these junction zones 32.

Figure 35 shows a second configuration of the present invention in a plan view similar to Figure 11, particularly illustrating, on an enlarged scale, the first overlapping region 26. The second overlapping region 27

81/85 will also be described in relation to Figure 6, since the second overlapping region 27 is similar to the first overlapping region 26 as long as the basic construction is concerned. This second configuration is characterized in that the junction zones comprise continuous junction zones 48 and intermittent junction zones 49 both with respect to the longitudinal direction. The other characteristics are similar to those of the first configuration and detailed description of them will be eliminated here.

The first and second overlapping regions 26, 27 are provided in the vicinity of the respective side edges 44 with continuous joining zones 48 to each other from the side edges 44 and with a plurality of intermittent joining zones 49 harmonized between each pair of joining zones 48 across transversely opposite one another. The intermittent junction regions 49 each comprise a first segment 49a and a second segment 49b spaced from each other substantially in the middle as seen in the longitudinal direction Y. The first and second segments 49a, 49b are spaced from each other by a distance of approximately 5 mm, preferably in a range of 3 mm to 10 mm. If this distance is less than 3 mm, it will be impossible to achieve a desired breathability, and if the distance exceeds 10 mm, a connection resistance will be insufficient.

The intermittent junction zones 49 allow the first free junction zones 45 to flow communicating with each other substantially in the respective median parts in the longitudinal direction Y of the first and second overlapping regions 26, 27. Specifically, the secondary passageways 34 formed by the first free junction zones 45 flow communicating with each other through the spaces defined between the first and second segments 49a, 49b of the respective intermittent junction zones 49.

Consequently, even if the upper and lower ends of the secondary passage channels 34 bend on the sides of the upper and lower edges 40, 41 and 42, 43, the amount of steam generated in the region between the legs can be guided to the outside of the diaper since the bypass channels 34 are maintained in fluid communication with the first junction-free zones 45 in the middle parts thereof. In this way, there will be no concern

82/85 that the region between the legs may remain partially moistened due to a residual amount of extinguished steam being guided to the outside of the diaper.

A pair of continuous junction zones 48 each formed in the vicinity of the associated side edge 44 serving to guide the amount of steam generated in the region between legs through the secondary passage channels 34 to the outside of the diaper without leaking externally in the transverse direction X. While each one of the opposite side edges 44 is provided with the single continuous junction zone 48 in this configuration, the number of continuous junction zones 48 will not be limited to this configuration and two or more continuous junction zones 48 may be provided along each one opposite side edges 44 while ensuring that steam leakage in the 300X transverse direction is safely prevented.

While the continuous junction zones 48 are provided in the vicinity of the opposite side edges 44 in this second configuration, it will be possible to provide the intermittent junction zones 49 in the vicinity of the respective side edges 44 as will be seen in Figure 36. In this variant shown in Figure 36, a plurality of continuous junction zones 48 are harmonized between the intermittent junction zone 49 provided in the vicinity of a side edge 44 and the intermittent junction zone 49 provided in the vicinity of the other edge 44. It will also be possible to harmonize the continuous junction zones 48 and the intermittent junction zones 49 alternatively in the transverse direction X. The intermittent junction zones 49 allow the first free junction zones 45 each extending in the longitudinal direction Y to flow in communication with one another and thus allowing the secondary channels of passage 35 formed by these first free junction zones 45 to flow in communication with each other another. The secondary through channels 35 then fluidly communicating with each other in the transverse direction X and, even if these secondary through channels 35 are folded on the side of the upper and lower edges 40, 41, said fluid communication ensures that the amount of steam generated in the region between the legs can be safely guided to the outside of the diaper.

Figures 37 and 38 show a third configuration of the present invention where Figure 37 is a perspective view of the diaper as a whole according

83/85 with this configuration and Figure 38 is a sectional view similar to Figure 32 (b). The third configuration is characterized in that the band member 4 is provided with a plurality of through holes 36 each extending through the band member 4 in its thickness direction. The other characteristics are similar to those of the first configuration and detailed descriptions of them will be eliminated here.

The front and rear strap sections 6, 7 are provided over the entire areas of the inner and outer sheets 14, 15 and the inner and outer sheets 16, 17, respectively, with a plurality of through holes 36 each extending through these leaves in the thickness direction. These through holes 36 are preferably harmonized in the first free junction zones 44 as seen in Figure 9. This is for the purpose of preventing the through holes 36 from being blocked by the adhesive forming the junction zones 32. Each of the through holes passage 32 preferably has a diameter of 1 to 2 mm and preferably harmonized so as not to overlap the elastic members surrounding the waist 18 provided in the front and rear strap sections 6, 7.

Said harmonization of through holes 36 allows the amount of steam guided in the secondary through channels 35 to be further guided through these through holes 36 to the outside of the diaper and thus allow no sensation of moisture to be experienced by the user.

Figure 39 shows a fourth configuration of the present invention. This fourth configuration is characterized in that the first and second ends 24, 25 of the liquid-absorbent structure 5 are provided with cover sheets 50, respectively, in order to prevent the liquid-absorbent core 23 from tilting through the spaces between the upper sheets. and later 21, 22. The other characteristics are similar to those of the first configuration and detailed description will be eliminated.

The cover sheet 50 has a ventilation rate of 113 kPa-S / m ² and is formed by a perspiration absorbing sheet having antibiotic properties. These cover sheets 50 cover the first and second ends 24, 25 and are permanently attached to the inner sheets 14, 16 of the front and rear strap sections 6, 7. Cover sheet 50 has a

84/85 pair of side edges 50c opposite and spaced from each other in the transverse direction X and a pair of ends 50a, 50b opposite and spaced from each other in the longitudinal direction Y. One dimension measured from one side edge 50c to the other side edge 50c in the transverse direction X is substantially equal to a dimension of the respective strap sections 6, 7, that is, to a dimension of one side edge 8, 9 to the other side edge 8, 9.

The inner ends 50a are completely opposite and joined to the inner sheets 14, 16, respectively, by means of adhesion or welding. The outer ends 50b overlap in the vicinity of the respective middle parts of the inner sheets 14, 16, respectively and are joined to them by means of adhesion or welding. Specifically, the cover sheets 50 extend from the inner edges 50a joined to the inner sheets 14, 16 to the outer edges joined to the top sheet 21 and the inner sheets 14, 16 in order to distance and cover the first and second ends 24, 25, respectively. With the aforementioned single construction, there is no concern that the liquid-absorbent core 23 may tip even in the event of the first and second ends 24, 25 partially opening due to deterioration of adhesion. The liquid-absorbent core 23 comprises a hydrophilic pulp and particles of super-absorbent polymer and, if these components bend through the first and second ends 24, 25 the user's skin will be undesirably irritated. Particularly, the polymer particles are extremely small in size and able to bend even through a thin space. As an effective defensive measure against this, cover sheets 50 reliably prevent the pulp and / or polymer particles from bending.

Although it is inevitable in this configuration that the cover sheets 50 close the outer ends 35a of the secondary through channels 35, the desired ventilation rate of the secondary through channels 35 can be ensured by adjusting the ventilation rate of the cover sheets to 113kPaS / m ² . It should be noted here that the ventilation rate will not be limited to this specific value and it will be possible to prevent the liquid-absorbent core 23 from being bent without the interference of the desired ventilation through the secondary passage channels 235 as long as the ventilation rate is adjusted to a value of 0.15 kPa-S / m ² or less.

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The ventilation rate was measured using the Frajour test method.

By dimensioning the cover sheet 50 in the transversal direction X coinciding with the dimension of the sections of the front and rear straps 6, 7 in the transversal direction X, it will be possible in the course of manufacturing the diaper to cut the 5 cover sheets 50 together with the sections front and rear straps

6, 7 on which the respective cover sheets 50 are located. As a result, the number of steps in the process can be advantageously reduced.

The cover sheets 50 may serve not only to prevent the liquid-absorbent core 10 from being folded but also to absorb perspiration from the user in order to ensure comfortable feeling when wearing the diaper since the perspiration-absorbing sheets are used as sheets coverage 50.

Claims (5)

1. “METHOD OF MANUFACTURING A DISPOSABLE DIAPER”, characterized by comprising the steps of: a) continuous feeding of the elastic members to a front leaf member and elastic members to 5 a member of the rear leaf in parallel to each other under tension or a first direction of the machine and connecting these elastic members to the raw leaves of said members of the front and rear leaves, respectively, continuously fed in the first direction of the machine and thus forming said front leaf member having a constant width dimension .10 as measured in a direction orthogonal to the first direction of the machine and said rear leaf member also having a constant width dimension so that said front and rear leaf members can continuously operate with a spacing of and in parallel with each other; b) feeding at regular intervals of an absorbent panel provided along the opposite long sides with a pair of elastic members for a region between legs connected under tension in them and provided with an absorbent core connected in them so as to be symmetrical above a imaginary line forking a distance between said pair of elastic members for the region between legs to said front and rear leaf members 20 operating in the first direction of the machine, placing and connecting said absorbent panel in and to said front and rear leaf members so that said pair of elastic members for the region between legs extends orthogonally to said elastic members for the front leaf member and to said elastic members for the rear leaf member; and c) cutting of said front and rear leaf members having said absorbent panel attached thereto substantially along the middle part between each pair of said adjacent absorbent panel to obtain the individual diapers. 2. “DISPOSABLE DIAPER”, substantially symmetrical above a longitudinal central line thereof, comprising a longitudinal direction and 30 a transverse direction orthogonal to the longitudinal direction; a member of the abdominal leaf and a member of the dorsal leaf extending in parallel to each other in the transverse direction; and a leaf member between legs in the longitudinal direction and attached to said abdominal leaf member and to said 2/4 dorsal leaf member in order to connect said abdominal and dorsal leaf members to each other where said leaf member between legs has a transversal dimension smaller than that of the abdominal and dorsal leaf members, referred to disposable diaper, characterized by said abdominal leaf member and said dorsal leaf member are provided with elastic members surrounding the waist connected to them under tension in the transverse direction; at least one region of the abdominal leaf member in which said elastic members surrounding the waist are present and said leaf member between legs overlapping one another; at least one region of the abdominal leaf member in which said elastic members surrounding the waist are present and said leaf member between legs overlapping one another; the opposite side edges extending in the longitudinal direction on both sides of the leaf member between legs being parallel to each other at least when the diaper is flat developed; and an apparent width of said leg region between legs as measured in the transverse direction after said elastic members encircling the waist are contracted and thereby said leaf member between legs retracts together with the abdominal leaf member and said leg member. dorsal leaf is higher on an edge line with the dorsal leaf member than on an edge line with the abdominal leaf member. 3. “CLOTHING ITEM”, comprising a chassis having an anteroposterior and a transverse direction, an internal side on the side facing the user's skin and an external side on the side facing the user's garment, a region the front waist, a region of the rear waist and a region between legs extending between said regions of the front and rear waists, said article of clothing, characterized in that said chassis comprises a peripheral edge of a waist opening consisting of two associated segments with said regions of the front and rear waists and spaced from and opposite to each other in said anteroposterior direction and regions of complete view in said regions of the front and rear waists in which the user's skin can be seen through the article; said regions in full view are defined by leaves showing a total light transmission of 55% or more and respectively 3/4 occupying 40% or more of the front and rear belt regions; and means of reinforcement against the breaking of said chassis being attached to the article along said peripheral edge of the waist opening so as to extend in said transverse direction. 4. “ITEM OF THE DISPOSABLE PANTS BODY FLUID ABSORBENT CLOTHING ARTICLE”, having a longitudinal direction, a transversal direction and a vertical direction being orthogonal to each other, comprising regions of the front and rear waists and a region between legs combined to define a shape type pants having an opening at the waist and a pair of leg openings, where the body fluid absorbing panel provided in said front waist region extends in said longitudinal direction and being affixed to the leaf members defining the respective surfaces of said regions of front and rear waists and where the regions of the front and rear waists are elasticized along a peripheral edge of said waist opening and the respective peripheral edges of said leg openings, said article of clothing characterized by said absorbent body fluid panel understand an absorbent core of the body fluid al, a liquid-permeable sheet for packaging said core, an absorbent pad of body fluid extending in the longitudinal direction and attached to the respective internal surfaces of said regions of the front and rear waists and flaps formed along the lateral edges of said absorbent pad of the opposite body fluid in said transverse direction, said flaps respectively comprising proximal edges being adjacent to said side edges of said absorbent pad of body fluid and extending in said longitudinal direction and with free edges, each at a distance from said absorbent pad of fluid body in the transverse direction, extending in parallel to the proximal edges where said free edges are provided with first elastic members fixed under tension to them; and said regions of the front and rear waists being provided along said peripheral edges of said leg openings with secondary elastic members fixed under tension in such a way as to intersect said lateral edges of said absorbent pad of body fluid and regions 4/4 of said flaps in which the free edges of the flaps developed externally in said transverse direction overlapping the secondary elastic members that are attached to said internal surfaces of said regions of the front and rear waists. 5. 'METHOD FOR MANUFACTURING A DISPOSABLE DIAPER', characterized by comprising the steps of continuous feeding of the elastic members to the front leaf member and elastic members to a rear leaf member in parallel to each other under tension in a first direction of the machine and connecting these elastic members to the raw leaves of said front and rear leaf members, respectively, continuously fed in the first direction of the machine and thus forming said front leaf member having a constant dimension of width as measured in an orthogonal direction to the first direction of the machine and said rear leaf member also having a constant width dimension so that said front and rear leaf members can continuously operate with a spacing and in parallel with each other; feeding at regular intervals of an absorbent panel provided along the opposite long edges with a pair of elastic members for the region between legs connected under tension in them and provided with an absorbent core connected in them so as to be symmetrical over an imaginary center line forking a distance between said pair of elastic members for the region between legs to the front and rear leaf members operating in the first direction of the machine, placing and connecting said absorbent panel to said front and rear leaf members so that the pair of elastic members for the region between legs extends orthogonally to said elastic members for the front leaf member and said elastic members for the rear leaf member; and cutting said front and rear leaf members having said absorbent panel substantially attached to them along the median region between each pair of said adjacent absorbent panels for obtaining the individual diapers.