CN101277665B - Disposable diaper - Google Patents

Abstract

A disposable pant-shaped diaper (1) which comprises an absorbent body (10) and an outer sheet (20) provided in the outer face side of this absorbent body (10) and in which the front corsage and the back corsage of the outer sheet (20) are bonded together at both sides, wherein the outer sheet (20) has elastic and stretch waist members located around the waist opening and a plural number of elastic and stretch hipline members horizontally located in the front corsage (F) and the back corsage (B) at intervals in the up and down direction, at the both sides where the front corsage and the back corsage are bonded together, side flaps (32,32) extending outward from the bonding parts are provided, and a fastening device (33) mechanically engageable with the outer face of the front corsage is provided in the front face side of each side flap (32).

Description

disposable diapers

technical field

The present invention mainly relates to a pant type disposable diaper which can adjust the fit to the body.

Background technique

Conventionally, in pants-type disposable diapers, in order to wear an absorber for absorbing bodily fluids on the body, various elastic stretchable members are arranged on the outer sheet holding the absorber to improve the adaptability to the body.

For example, in the following Patent Document 1, as shown in FIG. 21 , a pants-type disposable diaper is disclosed, which has a liquid-permeable top sheet 50 and a liquid-impermeable back sheet 51 and is arranged between these two sheets 50, 51. The absorber 52 in between joins both sides of the front body and the back body to form a waist opening and a pair of leg openings, wherein the waist elastic elastic members 48, 48... are arranged around the waist opening. , and set substantially continuous leg elastic parts 53, 53... along the periphery at the above-mentioned two leg openings, and waist elastic elastic parts 49, 49 are set at the waist, so that the disposable diaper is suitable for the body.

Moreover, in the following patent document 2, as shown in FIG. 22, a kind of pants-type disposable diaper is disclosed, which is composed of an absorbent main body and an exterior member. The first stretch elastic parts 55, 55 ... and the second stretch elastic parts 56, 56 ... made of materials, these stretch elastic parts 55 ..., 56 ... respectively pass through the crotch from the side edge of one side of the front and rear body pieces to reach the other side. At least a part of one side edge portion is arranged along the pair of leg openings, and is further arranged at a constant interval in the crotch portion.

Furthermore, in the following patent document 3, a pants-type disposable diaper is disclosed: in order to further prevent deviation from falling off, as shown in FIG. For the abdominal part and the back part, the left and right side edges of the abdominal part and the back part are joined and fixed to form the waist opening and the leg opening. On the waist opening and the leg opening, along the Along the entire circumference of the respective peripheral parts, waist elastic elastic members 57 and leg elastic members 58 forming substantially continuous folds are arranged, and a plurality of waist elastic members 59, 59, 59..., the waist elastic members 59, 59 are disposed in a shape displaced to the crotch side, and the displacement amount of the waist elastic members 59, 59 is greatest at the central part of the abdominal part.

Patent Document 1 Japanese Patent Application Laid-Open No. 7-265357

Patent Document 2 Japanese Patent Application Laid-Open No. 11-36103

Patent Document 3 Japanese Patent Application Laid-Open No. 2001-258931

In the underpants-type disposable diaper, as described above, the three parts of the waist opening, the leg opening, and the waist part are independently provided with elastic stretchable members, so that the adaptability to the body is ensured. However, although a minimum degree of adaptability can be obtained by the above-mentioned various elastic and stretchable components, the user's satisfaction may not necessarily be obtained due to large differences in individual bodies.

Contents of the invention

Therefore, the main object of the present invention is to provide a disposable diaper that can adjust the adaptability arbitrarily according to individual differences in addition to ensuring the adaptability to the body by the elastic stretchable member.

And the second subject is that the underpants-type disposable diaper can be worn in the same way as a belt-type disposable diaper.

In order to solve the above-mentioned problems, the present invention according to the first aspect provides a pants-type disposable diaper comprising an absorbent main body including an absorber, and an exterior sheet provided on the outer surface side of the absorbent main body. A waist opening and a pair of left and right leg openings are formed by joining the front body and the back body of the above-mentioned exterior sheet, and it is characterized in that

The exterior sheet includes: a waist elastic stretch member arranged around the waist opening; and a plurality of waist elastic stretch members arranged horizontally at intervals in the vertical direction on the front body and the back body,

On both sides of the joint of the front body and the back body, side edge extension flaps extending outward from the joint are formed by the outer shell portion constituting one side of the front body and the back body. These side edge extension flaps are provided with a mechanical fastening type buckle component, which is configured to pinch the side edge extension flap of the above-mentioned one side body piece and fasten it on the outer surface of the other side body piece.

In the invention of the above-mentioned first claim, at the both sides where the front body and the back body are joined, by the exterior sheet part constituting one side of the front body and the back body, there is formed an outer wall extending from the joint to the outside. The side extension flaps are provided with mechanical snap-fit fasteners on these side extension flaps. And, when the adaptability to the body is not enough under the state of wearing the shorts-type disposable diaper, by pinching the above-mentioned side edge portion extension flap and snapping it to the outer surface of the other side body piece, the adaptability can be adjusted arbitrarily. sex.

In addition, in the present invention, from the standpoints of superiority in manufacture, adaptability to the body, etc., the side portion extension flaps are constituted by an exterior sheet portion constituting one side of the front body and the back body.

In order to solve the above-mentioned second problem, the present invention as a second technical solution provides the disposable diaper of the first technical solution, wherein the front body and the rear body of the above-mentioned outer sheet are on the side of the other side body. At a position between the joint where both side parts are joined and the absorbent main body, a tear line for separating the front body and the back body is formed.

In the invention described in the above-mentioned second claim, if further adjustment of the adaptability is desired, the above-mentioned tearing perforation can be torn to separate the front body and the back body, and can be worn on the body in the manner of a belt diaper. superior.

The present invention as a third aspect provides the disposable diaper according to the second aspect, wherein the waist elastic expansion and contraction member is fixed by providing a sealing portion inside the perforation for tearing.

The present invention according to the above-mentioned fourth aspect provides the disposable diaper according to any one of the first to third aspects, wherein the waist elastic elastic member is a waist elastic elastic member disposed on the side of the body panel. The stretch force is set to be lower than the stretch force of the waist elastic stretch member disposed on the other side body panel side.

In the invention of claim 4, the elastic force of the waist elastic elastic member arranged on the side of the one side body is set to be lower than the elastic force of the elastic waist elastic member arranged on the other side of the body. As a result, in In the state before use, the stretching force of the waist elastic elastic member on the side of the other side body is relatively high, so the side edge portion of the above-mentioned side body extends the flap toward the inside of the other side body and is easy to operate. When the wearing state starts to be adaptively adjusted, the elastic force of the waist elastic elastic member of one body can be set relatively low, so it is easy to pinch the above-mentioned side edge to extend the flap and pull it toward the other side.

The present invention as a fifth aspect provides the disposable diaper according to any one of the first to fourth aspects, wherein the finished width of the one side body panel is formed wider than that of the other side body panel. Finished width.

The present invention as a sixth technical aspect provides the disposable diaper according to any one of the first to fifth technical aspects, wherein the side portion extension flaps have a vertically divided structure, and the upper side and the lower side The above-mentioned mechanical snap-fit buckle parts are respectively provided on the side extension flaps.

In the invention described in the sixth technical solution, the above-mentioned side extension flaps have a vertically divided structure, and the above-mentioned mechanical snap-fit buckle parts are respectively provided on the side extension flaps on the upper side and the lower side. The upper and lower parts of the extension flap can independently adjust the adaptive adjustment around the waist opening and the adaptive adjustment of the waist circumference, which can further improve the adaptability.

The present invention as a seventh aspect provides the disposable diaper according to the sixth aspect, wherein a side extension flap for separating the upper side and the lower side is formed between the side extension flaps on the upper side and the lower side. Perforation lines for tearing of flaps and lower side edge extension flaps.

In the invention according to the seventh claim above, when wearing, the above-mentioned tearing perforation can be torn, and the upper side side edge extension flap and the lower side side edge extension flap can be joined by intersecting each other. Cross fixed.

The present invention as an eighth technical aspect provides the disposable diaper according to any one of the first to seventh technical aspects, wherein the above-mentioned A mechanically engaging buckle component is provided with a buckle on the outer surface of the other side body, so that the extended flap of the side of the one body can pass through the buckle and then be folded back and fixed on the outside.

Invention effect

According to the present invention described in detail above, the adaptability to the body can be ensured by the elastic stretchable member, and furthermore, adaptability can be adjusted according to individual differences.

Description of drawings

Fig. 1 is a finished appearance view of a pants-type disposable diaper 1 according to a first embodiment of the present invention.

Fig. 2 is an expanded view of Fig. 1 .

Fig. 3 is a view along line III-III of Fig. 2 .

Fig. 4 is a view along line IV-IV of Fig. 2 .

Fig. 5 is a view corresponding to the view along the line III-III of Fig. 2 in a finished state.

FIG. 6 is an exploded perspective view of the absorbent main body 10 and the exterior sheet 20 .

Fig. 7 is a manufacturing procedure diagram (Part 1) of the underpants-type disposable diaper 1 .

Fig. 8 is a manufacturing procedure diagram (Part 2) of the underpants-type disposable diaper 1 .

Fig. 9 is a schematic diagram (part 3) of manufacturing the underpants-type disposable diaper 1 .

FIG. 10 is a plan view of main parts showing another example of attachment of the mechanical engagement type buckle member 33 .

Fig. 11 is a developed view of the exterior sheet 20 of the second embodiment.

12(A) and (B) are main part development views showing an example of forming tearing perforations with respect to the split-type side extension flap 32 together.

Fig. 13 is a developed view of a pants-type disposable diaper of a third embodiment.

Fig. 14 is a development view of a diaper showing an example of the exterior sheet 20 of the fourth embodiment.

15(A) to (C) are plan views of main parts showing an example of the shape of the side extension flap 32 of the fifth embodiment.

Fig. 16 is a finished appearance view of the underpants-type disposable diaper 1 of the sixth embodiment.

Fig. 17 is a developed view of Fig. 16 .

Fig. 18 is a main part development view showing a modified example of the exterior sheet 20 of the example of the underpants type disposable diaper according to the sixth embodiment.

Fig. 19 is a developed view of a pants-type disposable diaper of a seventh embodiment.

Fig. 20 is an internal view of Fig. 19 .

Fig. 21 is a developed view and a finished product view showing a conventional underpants-type disposable diaper.

Fig. 22 is a developed view showing a conventional underpants-type disposable diaper.

Fig. 23 is a developed view showing a conventional underpants-type disposable diaper.

Label description

1…Pants type disposable diapers

10…Absorptive body

11...Liquid-permeable surface sheet

12…Leak-proof sheet

13…Absorber

14…crepe paper

15…Pleated non-woven fabric

16～18...Linear elastic expansion parts

20…External sheet

21, 23... Waist opening

22, 24...Waist

25, 26... Waist elastic stretch parts

27, 28... Waist elastic expansion and contraction parts

29…Leg circumference incision

32...Extended side flaps

33... Mechanically engaging buckle components

Detailed ways

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is an appearance view of the finished product state of the underpants-type disposable diaper 1 of the present invention, Fig. 2 is an expanded view thereof, Fig. 3 is a view taken along the line III-III of Fig. 2 , and Fig. 4 is a view taken along the line IV-IV of Fig. 2 . In the necessary parts of the drawings, the bonding parts are indicated by X marks.

As shown in the figure, the underpants-type disposable diaper 1 (hereinafter simply referred to as a paper diaper) is a paper diaper configured as follows: an exterior sheet 20 is provided on the outer surface side of an absorbent main body 10, and the absorbent main body 10 passes through An absorbent body 13 made of cotton pulp or the like is interposed between a liquid-permeable top sheet 11 made of nonwoven fabric and the like and a leak-proof sheet 12 made of polyethylene or the like.

The exterior sheet 20 has waist elastic members 25..., 26... arranged around the waist opening, and a plurality of waist elastics arranged horizontally at vertical intervals on the front body F and the back body B. The elastic members 27..., 28... have side part extension flaps 32 extending outward from the above-mentioned joining parts 30, 31 on both side parts joining the above-mentioned front body F and back body B, and on the side parts The front side of the extension flap 32 has a mechanically engaging buckle member 33 that can be snapped to the outer surface of the front body F. As shown in FIG.

Hereinafter, the structure of the said absorptive main body 10 and the exterior sheet 20, its assembly structure, and a manufacturing method are demonstrated sequentially.

(Structure of the absorbent main body 10)

The absorber 13 has a substantially square planar shape in the illustrated example, and its width dimension is such that the wearer does not feel stiff when it comes into contact with the thighs. The absorber 13 is surrounded by crepe paper 14 in order to improve the shape retention and the diffusibility of body fluid passing through the liquid-permeable top sheet 11 . As the absorber 13, an air deposition absorber capable of reducing the volume is preferable.

A porous or non-porous nonwoven fabric, a porous plastic sheet, or the like is suitably used as the liquid-permeable topsheet 11 covering the surface side (skin contact surface side) of the above-mentioned absorber 13 . The raw material fiber constituting the nonwoven fabric may be, for example, synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, regenerated fibers such as rayon and cupro, and natural fibers such as cotton. , non-woven fabrics obtained by appropriate processing methods such as spunlace, spunbond, thermal bonding, meltblown, and needle punching can be used. Among these processing methods, the advantages of the spunlace method lie in its flexibility and drapability, and the advantages of the thermal bonding method lie in its bulkiness and softness. When a plurality of through holes are formed in the liquid-permeable top sheet 11, urine and the like can be quickly absorbed, and the dryness is excellent. The liquid-permeable top sheet 11 wraps the side edge of the absorber 13 and extends to the inner side of the absorber 13 .

The leak-proof sheet 12 covering the inner surface side (non-skin-contacting surface side) of the above-mentioned absorber 13 is made of a liquid-impermeable plastic sheet such as polyethylene or polypropylene. Moisture-permeable material. For the water-blocking/moisture-permeable sheet, for example, a microporous sheet obtained by melt-mixing an inorganic filler into an olefin resin such as polyethylene or polypropylene to form a sheet, and stretching in a uniaxial or biaxial direction is used. Compared with a non-porous sheet of the same thickness as a thin sheet, it is superior in flexibility due to its lower rigidity.

On the other hand, the crepe nonwoven fabric 15 forming the three-dimensional gathers BS, as shown in Figs. The side edge part of 13 is further rolled in from the upper side, and is extended to the inner surface side of the absorber 13, and is bonded. More specifically, in the above-mentioned gathered nonwoven fabric 15, in the longitudinal direction middle part of the paper diaper as shown in FIG. Bonded by hot-melt adhesive or the like, and at the front and rear ends in the longitudinal direction, as shown in FIG. In addition, the part forming the three-dimensional gathers BS is folded on the upper part of the absorber 13 and bonded with a hot-melt adhesive or the like.

Inside the pleated nonwoven fabric 15 formed by the above-mentioned double-layer nonwoven fabric, a plurality of linear elastic elastic members 16, 16... are provided on the standing front end side, and are provided near the side edges of the absorber 13. The linear elastic elastic member 17 and the linear elastic elastic member 18 are further provided on the inner side of the absorber 13 . The above-mentioned front-end linear elastic elastic parts 16, 16... are mainly used to make the non-woven fabric part protruding from the side edge of the absorber stand up by means of its elastic elastic force to form three-dimensional folds BS, as shown in Fig. 5 in the finished state As shown in the figure, the linear elastic stretchable members 17 and 18 mainly bend the side portion of the absorber 13 by their elastic stretching force, and form the base end portion of the three-dimensional gathers BS by the side portion of the absorber 13 . The standing height HL of the absorber 13 from the above-mentioned bent portion to the side edge of the absorber is 5 to 30 mm, preferably 20 to 30 mm. When the said three-dimensional height HL is less than 5 mm, since it is too short, it becomes difficult to bend an absorber side part, and sufficient adaptability to skin cannot be ensured. In addition, when the raised height HL exceeds 30 mm, the raised length becomes too long, causing problems such as inability to bend effectively.

The above-mentioned leak-proof sheet 12 enters into the inside of the above-mentioned two-layer sheet-like pleated nonwoven fabric 15, and as shown in FIG. 5, forms a leak-proof wall on the lower end side of the three-dimensional gathers BS. As the leak-proof sheet 12, it is preferable to use an opaque material that does not show the brown color of defecation or urine. As an opacifying treatment, it is suitable to add pigments or fillers such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc, and barium sulfate to plastics to form a thin film.

As the linear elastic elastic members 16 to 18, commonly used styrene-based rubber, olefin-based rubber, urethane-based rubber, ester-based rubber, polyurethane, polyethylene, polystyrene, styrene-butadiene copolymer, etc. can be used. Raw materials such as polyester, silicon, and polyester. Also, in order to make it difficult to see from the outside, it is preferable to install it with a thickness of 925 dtex or less and a tension of 150 to 350%. In addition, instead of the linear elastic elastic member described above, a band-shaped elastic elastic member having a certain width may be used.

The raw material fiber constituting the above-mentioned crepe nonwoven fabric 15 is also the same as the above-mentioned liquid-permeable surface sheet 11. In addition to synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, rayon, copper, etc. may also be used. Regenerated fibers such as ammonia silk and natural fibers such as cotton can be used as non-woven fabrics obtained by appropriate processing methods such as spunbond method, thermal bonding method, melt blown method, and needle punching method. A non-woven fabric with excellent air permeability by reducing the weight per unit area. Furthermore, for the above-mentioned pleated nonwoven fabric 15, in order to prevent the penetration of urine, prevent inflammation, and improve the tactility (dry feeling) to the skin, it is desirable to use a non-woven fabric coated with silicon, metal wax, or alkyl chloride. Water-repellent treated non-woven fabrics such as alkyl chromic chloride water repellents.

(Structure of the exterior sheet 20)

As shown in Fig. 2 and Fig. 6, the exterior sheet 20 is a double-layer nonwoven fabric sheet made of an upper nonwoven fabric 20A and a lower nonwoven fabric 20B. An elastically stretchable part to impart flexibility. The planar shape is shaped like an hourglass as a whole by leg circumference cutouts 29 for forming leg openings in the middle.

In the exterior sheet 20 of the present invention, as the above-mentioned elastic members, in the expanded shape shown in FIG. A plurality of waist elastic elastic member groups 27 . . . , 28 .

The above-mentioned waist elastic stretch parts 25..., 26... are a plurality of line rubber-like elastic parts that are arranged in the vicinity of the edge of the waist opening at intervals along the vertical direction within the joining range of the side edges of the front body F and the back body B. , the paper diaper is worn on the body by applying a stretching force in a manner that tightens the body around the waist. The waist elastic elastic members 25..., 26... use thread rubber in the illustrated example, but for example, belt-shaped elastic members may be used.

The waist elastic stretch members 27..., 28... are linear rubber elastic stretch members that are spaced apart in the vertical direction and arranged in the horizontal direction across the range from the upper part to the lower part of the waist substantially within the joint range of the side parts. , the waist portion of the front body F and the back body B respectively apply stretching force in the horizontal direction, so that the diaper is closely attached to the body. Here, the boundaries between the waist elastic stretch members 25 . . . , 26 . . . and the waist elastic stretch members 27 . . . , 28 . For example, in the elastic members arranged at intervals in the vertical direction and arranged on the front body F and the back body B in the horizontal direction, even if there is no specific number, as long as some roots on the upper side function as waist elastic members, the remaining elastic It is sufficient for the part to function as a waist elastic.

In addition, the above-mentioned waist elastic elastic members 27..., 28... may be continuously arranged across the absorbent main body 10, but as shown in the figure, in order to further prevent the contraction of the absorbent body 13, they may be placed across the absorbent main body The elastic elastic parts of the main body 10 are cut to make it discontinuous.

The discontinuity of the elastic stretchable parts, such as Japanese Patent Application Laid-Open No. 2000-26015 and Japanese Patent Laid-Open No. 2002-273808, can utilize the following method: after disposing various elastic members on the exterior sheet 20, use The exterior sheet passes between the embossing cutter roll and the nip roll, and the elastic members present in a predetermined range are cut into fine pieces by applying pressure or heating of the embossing cutter roll.

In the exterior sheet 20, the finished width L _B of the back body B is larger than the finished width L _F of the front body F, and the back body B has a heat-sealed portion for joining the front body F and the back body B. 30, the side portion extending flaps 32, 32 extending outward, and, on the above-mentioned side portion extending flap 32, on the side as the front side in the finished state, there is a surface that can be snap-engaged with the outer surface of the front body F. The mechanical engagement buckle part 33. The protrusion length (K) of the said side part extension flap 32 is 10-50 mm, Preferably it is 15-30 mm.

The above-mentioned mechanical fastening type buckle member 33 is provided with a hook member 33b on the surface side of the fastening base material 33a such as plastic, polyethylene laminated non-woven fabric, non-woven fabric, paper, etc., and the above-mentioned hook member 33b is represented by "レ" Shape, "J" shape, umbrella shape, "T" shape, etc., and can be fastened to the outer surface of the exterior sheet 20 (lower nonwoven fabric 20B). In addition, the above-mentioned mechanical fastening type buckle member 33 may be fastened by attaching a target tape (female side buckle) to the front body F separately. The flap 32 extending from the side is folded inward in a finished state (before use) and joined to the outer surface of the exterior sheet 20 .

In the above-mentioned exterior sheet 20, for the above-mentioned waist elastic elastic members 27..., 28..., it is desirable to set the elastic force of the waist elastic elastic members 28, 28... arranged on the back body B side to be smaller than those arranged on the front body. The expansion and contraction force of the waist elastic expansion and contraction members 27, 27... on the F side. By setting the tension difference in this way, in the state before use, since the elastic force of the waist elastic elastic members 27, 27... on the front body F side is relatively high, the side stretch flaps 32 are directed inward and are easy to handle. In addition, since the elastic force of the waist elastic stretch members 28, 28, ... of the back body B is set relatively low when performing adaptive adjustment from the wearing state, it is easy to pinch the above-mentioned side portion extension flaps 32. And the front body piece F side pulls.

(Assembling of paper diapers)

The above-mentioned absorbent body 10 and exterior sheet 20 are integrally bonded to the upper surface side of the exterior sheet 20 with an adhesive such as hot melt, as shown in FIG. 6 . Then, the absorbent main body 10 and the exterior sheet 20 are folded back, folded in the front-rear direction along the lines S, and the junctions 31, 31 of the front body F and the junction 30 of the back body B are bonded by hot welding or hot-melt adhesive. , 30 are joined to assemble the underpants type disposable diaper shown in FIG. 1 .

(manufacturing of paper diapers)

Fig. 7 is an assembly process diagram in a cross-flow mode in which the direction of the production line is the width direction of the diaper. In the process of feeding out the continuous sheet of the exterior sheet 20, the portion between the thighs is cut out along the elliptical leg circumference cutting line 36 by a roll cutter or the like. Afterwards, on the corresponding portion of the side of the back body B on the upper side of the leg circumference cutting line 36, the two mechanically engaging buckle members 33, 33 are pasted across the planned cutting line, and the elliptical cut-out portion is crossed. Mode The absorbent main body 10, 10 is laminated by a hot-melt adhesive. Thereafter, between the absorbent main bodies 10 and 10, after cutting the front body F side at the finished width L _F position, the front body F side is folded back by the flap 34, and the front body F side is bonded by heat welding or a hot melt adhesive or the like. After the joining parts 31, 31 of the front body F and the joining parts 30, 30 of the back body B are joined, they are cut at the center of the two mechanical fastening fasteners 33, 33 to obtain the underpants-type disposable diaper 1 .

Next, a second example of the manufacturing method is shown in FIG. 8 . First, in the process of unwinding the continuous sheet of the exterior sheet 20, the part between the thighs is cut out along the elliptical waist elastic stretch member 26 with a roll cutter or the like. After that, two mechanically engaging buckle members 33, 33 are pasted across the line to be cut at the corresponding portion of the side of the back body on the upper side of the leg circumference cutting line 36, and the above-mentioned elliptical cut-out part is straddled. The absorbent main bodies 10, 10 are laminated using a hot-melt adhesive. Thereafter, between the absorbent main bodies 10, 10, after cutting the front body F at the central position 35 of the above-mentioned cutout portion, the front body F side is folded back through the flap 34, and the front body F is folded back by heat welding or a hot melt adhesive or the like. After the joining parts 31, 31 of the front body F and the joining parts 30, 30 of the back body B are joined, they are cut at the center of the two mechanical fastening fasteners 33, 33 to obtain the underpants-type disposable diaper 1 . In this case, when joining the junctions 31, 31 of the front body F and the junctions 30, 30 of the back body B by hot welding or hot-melt adhesives, etc., the junction 31 of the front body F It engages with the engaging portion 30 on the outer side of the above-mentioned mechanically engaging buckle member 33 with a shift in phase.

Furthermore, in the third example of the manufacturing method shown in FIG. 9, in the above-mentioned second example, the joining portions 31, 31 of the front body F and the back body B are joined by thermal welding or hot-melt adhesive or the like. In the case of joints 30, 30, the phase difference is eliminated between the upper and lower sides. In this case, by setting the elastic force of the waist elastic elastic members 27, 27... on the front body side to be high, the front body F The frame portion extension flap is retracted, whereby the mechanically engaging buckle member 33 can be exposed.

However, in the above-mentioned embodiment, the two mechanically engaging buckle members 33, 33 are pasted across the line to be cut at the corresponding portion of the side portion on the side of the back body B, but as shown in FIG. After affixing one sheet of mechanically engaging buckle member 33, cut it in half. In this case, it can be completed at one time in the sticking process of the mechanical fastening type buckle member 33, and the manufacturing process can be shortened.

(second embodiment)

Next, the second embodiment of the exterior sheet 20 will be described in detail with reference to FIG. 11 .

In the exterior sheet 20 shown in FIG. 11 , in the back body B, side edge extension flaps 32 , 32 extending outward from the heat-sealed portions 30 , 31 joining the front body F and the back body B are formed. The upper and lower side extension flaps 32A and the lower side extension flaps 32B are respectively provided with the above-mentioned mechanical fastening type buckle parts 33A and 33B for the vertically divided structure. By forming the side portion extension flaps 32 into the above-mentioned divided structure, the adaptability around the waist opening and the adaptability around the waist can be individually adjusted, and the adaptability can be further improved. In this case, in order to secure the amount of adaptive adjustment of the upper side extension flap 32A and the lower side extension flap 32B, it is desirable that the upper side extension flap 32A be located in the waist area corresponding to the position of the upper side extension flap 32A. A. In the waist section C corresponding to the position of the lower side extension flap 32B and the waist section B without the side extension flap, the waist elastic stretchable member 26 (according to the situation) arranged in the above waist section A Including a part of the waist elastic elastic member 28) and the elastic force of the waist elastic elastic members 28, 28 ... arranged on the waist section C are set to be smaller than the elastic force of the waist elastic elastic members 28, 28 ... arranged on the waist section B . That is, high adaptability is obtained by giving freedom of adjustment amount to the waist portion where the upper side extending flap 32A and the lower side extending flap 32B are attached.

On the side extension flaps forming the above-mentioned up-and-down division structure, as shown in FIG. Perforations 37, 38 for tearing are formed on the flaps between the wings 32B. The perforation 37 for tearing shown in FIG. 12(A) is an example of a perforation formed along the horizontal direction, and the perforation 38 for tearing as shown in FIG. 12(B) is formed by making one side longer. It is an example of deformed horizontal "eight" shape. When wearing, the tearing perforations 37 and 38 can be torn, and the upper side side extension flap 32A and the lower side side extension flap 32B can be intersected and joined to fix each other.

(third embodiment)

In the above-mentioned first and second embodiments, the front side of the side edge extension flap 32 is provided with a mechanical fastening type buckle part 33 that can be buckled with the outer surface of the front body. If the adaptability of the body is not enough, the above-mentioned side extension flaps 32 are pinched and pulled to the front body F side, and the adaptability can be adjusted arbitrarily by being joined to the outer surface of the outer sheet 20. Alternatively, the adaptive adjustment can be carried out in the crawling state, and a mechanically engaging buckle 33 that can be buckled with the outer surface of the back body is provided on the back side of the above-mentioned side extension flap 32 .

Specifically, as shown in FIG. 13 , on the above-mentioned exterior sheet 20, the finished width LF of the front body F is made wider than the finished width L _B of the back body B, and on the above-mentioned front body F, a secondary joint _is provided. The heat-sealed portion 31 of the front body F and the back body B has side extension flaps 32, 32 extending outward, and the side extension flap 32 is provided as a surface on the back side in a finished state. A mechanically engaging buckle part 33 capable of snapping to the outer surface of the back body B.

In this case, contrary to the above-mentioned first embodiment, it is desirable that the waist elastic members 27, 28, . The expansion and contraction force is set to be lower than the expansion and contraction force of the waist elastic expansion and contraction members 27, 27... arranged on the back body B side.

(fourth embodiment)

In the above-mentioned first to third embodiments, the exterior sheet 20 is composed of a laminated sheet formed by laminating the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B. However, as shown in FIG. 14, the exterior sheet 20 may also be formed A structure in which the front body exterior sheet part GF and the back body exterior sheet part GB are separated.

(fifth embodiment)

In each of the above-described embodiments, the side extension flaps 32 are formed in a rectangular shape by extending the end width of the front body F as it is, but as shown in FIG. 15 , various shapes may be used. The shape of the flaps is, for example, as shown in FIG. The flaps 32 are formed in a stepped shape, and further, as shown in FIG. 15(C), the upper side extension flap 32A and the lower side extension flap 32B may be formed in a mushroom shape in two steps up and down.

(sixth embodiment)

In each of the above-mentioned embodiments, in the case of adjusting the adaptability, the side extension flaps 32 are pinched in the state of forming shorts, pulled to the front body side, and joined to the outer surface of the outer sheet. In this case the amount of adjustment is still bounded naturally. Therefore, in order to expand the range that can be adjusted, as shown in FIGS. And inside the heat-sealed part 30 , specifically between the heat-sealed part 30 and the absorbent main body 10 , preferably near the inner side of the heat-sealed part 30 , tear perforations 39 are provided.

In this case, the connection between the front body F and the back body B is released by tearing at the tearing perforation 39, so that the front body F and the back body B can be attached to the back of the body in the same way as a belt diaper. Then, the above-mentioned side portion extension flaps 32 are pulled to the front body side, joined to an arbitrary position, and worn. In this case, a number, a logo or a design may be added to the front body F as an indication of the joining position of the above-mentioned side extending flaps 32 .

Moreover, when tearing with the above-mentioned tearing perforation line 39, there is fear that the ends of the waist elastic elastic members 28, 28 will be unfixed and the elastic members will be pulled in. Therefore, as shown in FIG. With the inner side of the perforated line 39, side seals 40 are provided in order to fix the waist elastic elastic parts 28, 28.... The side seals 40 may be arranged continuously in the vertical direction, or may be arranged discontinuously in line with the waist elastic elastic members 28 , 28 . . .

(seventh embodiment)

Furthermore, after tearing with the perforation line 39 for tearing, when wearing the belt-type diaper, in order to facilitate wearing and adjustment, as shown in FIG. Buckles 41, 41 are provided. In this case, the side extension flaps 32 are preferably shortened in the longitudinal direction as shown in the figure, and the side extension flaps 32 are passed through the predetermined buckles 41 at the time of wearing, and then joined to the outer garment. The outer surface of sheet 20. Furthermore, in this embodiment, the mechanical engagement type buckle member 33 may be provided on the outer surface side (or both the inner surface side and the outer surface side) of the side portion extension flap 32 . When the mechanical engagement buckle 33 is provided on the outer surface side, the side extension flaps 32 can be folded back and fixed outside after passing through the buckle 41, and the mechanical engagement buckle 33 can be reliably prevented from falling off during wearing.

(other embodiments)

(1) In the above-mentioned embodiments, all are examples of shorts-type disposable diapers, but only the process of joining the front body F and the back body B of the above-mentioned outer sheet can be omitted to obtain a so-called belt-type disposable diaper. Same product as diapers. In addition, conventional belt-type disposable diapers had to be produced by a so-called vertical flow system, but by applying the present invention, they can also be produced by a so-called lateral flow system.

(2) In the above-mentioned shorts-type disposable diaper, the elastic elastic members disposed on the outer sheet 20 include waist elastic elastic members 25..., 26... There are two types of the plurality of waist elastic elastic members 27..., 28... arranged in the horizontal direction, but elastic elastic members may also be arranged around the legs.

(3) In the above-mentioned embodiment, the side part extension flap 32 is formed by the side part of the back body part of the exterior sheet 20, and the mechanical fastening type buckle part 33 is pasted on this part, but it is also possible to make the front body part F and the back part The body parts B are of the same width, and the joining position is made to be slightly inward than the side edges of the side parts, and the mechanical joining type buckle member 33 is pasted on the outer surface of the front body or the outer surface of the back body at a position extending outward from the joining position. .

(4) In the above-mentioned second embodiment, the side extension flap 32 is divided into upper and lower sections, but it is also possible to form a three-section structure of an upper section, a middle section, and a lower section, and attach a mechanically engaging buckle member to each of them. 33.

(5) In the above-mentioned embodiment, the exterior sheet 20 is composed of a single sheet, but it may be an exterior sheet with a structure divided into two consisting of a front body side exterior sheet and a back body exterior sheet.

(6) In the above-mentioned first embodiment and second embodiment, etc., the side extension flaps 32 and the mechanical fastening type buckle members 33 are provided on the side of the back body B, and the tear-off parts are provided on the side of the front body F. As for the perforation 39 for tearing, in the above-mentioned third embodiment, the side edge extension flap 32 and the buckle part 33 are provided on the side of the front body F, and the perforation 39 for tearing is provided on the side of the back body B, However, the side extension flaps 32, the button members 33, and the perforations 39 for tearing may be provided on both the back body B and the front body F. In this way, since the front and back can be used in the same way, for example, when the wearer is lying down and sleeping, when the size is adjusted or the side edge is torn with the hole line and then refixed with the mechanically engaging buckle part 33 , no matter the wearer is in a prone or supine state, there will be no inconvenience that the belt will be inserted under the body and fixed.

(7) In each of the above-mentioned embodiments, the side extension flaps 32, 32 are formed on both sides of the back body B and/or the front body F, but the side extension flaps may be formed only on one side. 32. Also in this case, adaptive adjustment can be performed at the time of wearing, and also the number of parts of the mechanically engaging buckle member 33 , which is expensive in material, can be reduced.

Claims (5)

1. Breeches type disposable diaper, comprise the absorbent main body that contains absorber and be arranged on the outer load of the outer surface side of this absorbent main body, predecessor's sheet by engaging described outer load in both sides and afterwards the body sheet form the leg opening part of waist opening portion and pair of right and left, it is characterized in that

Described outer load has: be configured in around the described waist opening portion the waist elasticity extensible member and on predecessor's sheet and back body sheet the empty along the vertical direction standard width of a room in an old-style house every and a plurality of waistline elastic telescopic parts of along continuous straight runs configuration,

In the both sides that described predecessor sheet and back body sheet engage from waist opening portion to leg opening part, by constituting the outer load part of described back body sheet, the side portion that formation is extended laterally from the junction surface is extended flap, and the front face side of extending flap in these side portion is provided with the box-like button parts of mechanical clasps, constituting the side portion that pinches described back body sheet extends flap and is fastened on the outer surface of predecessor's sheet, and, partly form the side portion of extending laterally from described junction surface by the outer load that constitutes described predecessor sheet and extend flap, and the rear side of extending flaps in these side portion is provided with the box-like button parts of mechanical clasps, constitutes the side portion that pinches described predecessor sheet and extends flap and be fastened on the outer surface of back body sheet.

2. disposable diaper as claimed in claim 1, wherein, the junction surface that predecessor's sheet on the sidepiece of described predecessor sheet and back body sheet, described outer load and back body sheet engage in both sides and the position between the absorbent main body, be formed for separating predecessor's sheet and after tearing of body sheet use the hole line.

3. disposable diaper as claimed in claim 2 wherein, fixes waistline elastic telescopic parts by in described inboard of tearing with the hole line sealing being set.

4. disposable diaper as claimed in claim 1, wherein, described side portion is extended flap for cutting apart structure up and down, is respectively equipped with the box-like button parts of described mechanical clasps at the side portion extension flap of epimere side and hypomere side.

5. disposable diaper as claimed in claim 4 wherein, extends in the side portion of described epimere side and hypomere side and to be formed for separating described epimere side side portion between the flap and to extend flap and hypomere side side portion and extend tearing of flap and use the hole line.

Images