JP2008079866A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article with the improved leakage preventive property, especially with the improved sideways leakage preventive property in the groin. <P>SOLUTION: The absorbent article has an absorber interposed between a liquid-permeable front surface sheet and a rear surface sheet constituting a non-skin-contact surface. The absorbent article also has a fastening part 4 in the non-skin-contact surface to fasten the absorbent article to the clothing, and a cutoff line 5 in the longitudinal direction in the absorber interposed part. The absorbent article further comprises a paper diaper body with the absorber interposed between the liquid-permeable front surface sheet and the liquid-impermeable rear surface sheet, and an auxiliary absorbing member layered/disposed on the liquid-permeable front surface sheet of the diaper body. The auxiliary absorbing member has the cutoff line in the longitudinal direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to absorbent articles such as disposable diapers, sanitary napkins, urine pads, and absorbent pads.

Absorbent articles such as disposable diapers, absorbent pads and sanitary napkins are well known. Although these absorbent articles are worn differently depending on the product type, they are absorbed between the liquid-permeable top sheet and the liquid-impermeable back sheet in order to absorb and retain body fluids such as urine, feces and menstrual blood. It has a structure in which a body is interposed, and is common in that the absorber interposed portion is used by being directed to the crotch portion.
Further, due to the commonality of using the absorbent intervening portion in contact with the crotch portion, there is also a common problem of so-called “lateral leakage” of body fluid leakage from the absorbent article side edge.
Most of the causes of side leakage are because the absorber intervening part with relatively high rigidity is located in the crotch part. Therefore, on the human body structure, it is between the concave part of the groin part that exists from the lower end of the buttock to the inner thigh and the absorber side edge. This is due to the inflow of body fluids into the inevitably formed space.
For this reason, in various conventional absorbent articles, in order to prevent body fluid from flowing into the space, standing cuffs along the product front-rear direction are formed, embossing is performed on the absorbent intervening portion, or a paper diaper is used. Various techniques for preventing side leakage, such as forming an underbody gather to improve the fit around, are employed.
JP 2005-261554 A JP-A-2005-224619 JP 2001-095841 A JP 2004-261332 A JP 2002-200105 A

However, the conventional product has many techniques to prevent the inflow of bodily fluids into the groin area, but there is no way to effectively absorb the bodily fluid that has flowed into the groin area once, so there is no gathering in the disposable diaper. Only measures are taken to stop it. For this reason, it has not been possible to reliably prevent side leakage in conventional products, and technical improvements are required to achieve improved leakage prevention.
Accordingly, an object of the present invention is to provide an absorbent article with improved leakage prevention properties, and in particular, to provide an absorbent article with improved lateral leakage prevention properties due to the inguinal portion.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An absorbent article in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet constituting a non-skin contact surface,
A non-skin contact surface has a fastening portion for fastening to clothing;
Has an easy separation line along the longitudinal direction, and
Absorbers exist in each of the compartments separated by the easy separation line,
An absorbent article characterized by the above.

(Function and effect)
By providing the easy-to-separate line at the absorber intervening part, it can be separated into two or more and attached to the clothing, and a flexible wearing mode can be taken.
For example, if the two parts are separated and attached along the left and right suspensions, leakage prevention from the suspension opening can be improved. In particular, when the clothing is a paper diaper, the absorbent intervening portion of the paper diaper is normally positioned at the separated portion, and urine, feces, etc. are guided to the separated portion, and a further side leakage prevention effect is obtained. .
In addition, for example, after leaving a non-separated part to be separated from the one end by an easy-separated line by a predetermined distance, only the non-separated part is fixed to the clothing, and the separated part is attached to the clothing. If the strip-shaped free part is folded in a bellows shape and the thickness is increased, the space between the clothing and the groin can be filled, resulting in the groin. This can contribute to prevention of leakage.
Furthermore, when the free front end sides of the two strip-shaped free portions are crossed and overlapped, a hole is formed between the free base end sides. If the penis is inserted through the hole, the penis is fixed.
On the other hand, if only the central part is cleaved without separating both ends of the easy-separation line, an absorbent article in which a through hole is formed can be formed. If this absorbent article in the center portion is used as a pad used in combination with a paper diaper, a pocket for guiding urine and feces can be formed on the skin contact surface.
As described above, in the present invention, various forms can be adopted, and the leakage preventing property can be further enhanced as compared with conventional absorbent articles.

<Invention of Claim 2>
A paper diaper main body part in which an absorbent body is interposed between the liquid permeable surface sheet and the liquid impermeable back sheet, and the liquid permeable surface sheet in a range from at least the crotch part to the front body side of the paper diaper main body part. And an auxiliary absorbent member disposed on top of each other,
The auxiliary absorbent member has a structure in which a second absorbent body is interposed between a liquid-permeable surface sheet constituting a skin contact surface and a back sheet constituting a non-skin contact surface,
Has an easy separation line along the front-rear direction starting from the ventral side edge,
There is an absorber in each of the sections separated by this easy separation line, and
An absorbent article, wherein a part or all of the back sheet side is detachably bonded to the liquid-permeable surface sheet of the paper diaper main body.

(Function and effect)
In the present invention, the auxiliary absorbent member provided with an easily separating line along the front-rear direction is partly or entirely peelable on the liquid-permeable surface sheet in the range from the crotch part to the front body side of the paper diaper main body part. Glued in a state.
Therefore, the auxiliary absorbent member can be peeled from the main body part of the disposable diaper by a predetermined distance while leaving the adhesive part from the front body side end toward the crotch part.
When the predetermined distance is released, a part of the auxiliary absorbent member is free from the main body of the disposable diaper.
A strip in which the auxiliary absorbent member is partially separated on the front body side of the paper diaper main body when the front side part is made free or in a free state as described above, and only the free part is cut off with an easy separation line. A shaped free part is formed.
Then, when the paper diaper main body is mounted on the body, the strip-shaped free part is folded in, for example, a bellows shape to increase the thickness so as to fill the space between the paper diaper main body and the groin of the body. If so, leakage due to the inguinal portion can be prevented.
Furthermore, if the free front end sides of two strip-shaped free portions are crossed, a slit hole is formed between the free base end sides. When the penis is mounted so as to pass through the slit hole, an auxiliary absorbent member is interposed between the penis and the abdomen. That is, the penis is positioned between the absorbent intervening part of the main body of the disposable diaper and the auxiliary absorbent member.
With such a wearing mode, it is possible to prevent the urine from urinating urgently when the penis is in the upward (chest direction) state, and to prevent the urine from leaking from the waist opening of the clothes. It is also possible to prevent urination and leakage from the leg opening. Even if light incontinence occurs when sleeping on the back with the penis facing up, the urine will not stay on the lower abdomen of the incontinence, thus preventing the user from feeling extremely uncomfortable .
On the other hand, if only the center part of them is cleaved without separating both ends of the easy separation line and only the vicinity of the cleaved part is peeled off from the main body part of the paper diaper, the cleaved part is cleaved in the front-rear direction on the skin contact surface. A hole-like recess is formed.
Further, if the auxiliary absorbent member is separated by tearing off all the easy separation lines, a groove portion is formed between the protruding ridges having absorptivity along the front-rear direction on the skin contact surface.
If the concave portion and the groove portion are formed in this way, urine, feces and the like are guided to the concave portion, and a further side leakage preventing effect can be obtained.
As described above, in the present invention, the user can freely move a part of the auxiliary absorbent member and place it at an arbitrary part as necessary, or can form a recess or the like at an arbitrary position. It can be in the form.
As a result, various leak prevention improvements are improved as compared with conventional absorbent articles. In particular, it is possible to suitably prevent a problem caused by the groin, which is a main cause of leakage, which cannot be solved by conventional products.

<Invention of Claim 3>
The absorbent article according to claim 2, wherein the absorbent article is detachably bonded via a hot melt adhesive.

(Function and effect)
By using a hot melt adhesive, the auxiliary absorbent member can be peeled off without damaging the softness of the product. Moreover, it can adhere | attach in the state which can be peeled easily. Furthermore, it is inexpensive and excellent in handling in production.

<Invention of Claim 4>
The absorptive article according to any one of claims 1 to 3 which has two or more easy cut lines.

(Function and effect)
Thus, it becomes possible to more flexibly cope with a complicated desired form. For example, a plurality of strip-shaped free portions can be formed as long as they are provided apart from each other in the width direction.

<Invention of Claim 5>
Both the absorbent body and the second absorbent body have an absorbent core in which an absorbent polymer is dispersed in the fiber, and the fiber density of the second absorbent body is lower than the fiber density of the absorbent body of the paper diaper main body. The absorptive article according to any one of claims 2 to 4.

(Function and effect)
Since the fiber density of the second absorbent body is lower than that of the absorbent body, the liquid absorption speed of the auxiliary absorbent member is faster than that of the paper diaper main body, so that the body fluid can be quickly absorbed by the auxiliary absorbent member.

<Invention of Claim 6>
Both the absorbent body and the second absorbent body have an absorbent core in which an absorbent polymer is dispersed in the fiber, and the polymer density of the absorbent body of the paper diaper body is higher than the polymer density of the second absorbent body. The absorbent article according to any one of claims 2 to 5.

(Function and effect)
Since the polymer density of the absorbent body of the paper diaper main body is configured to be higher than the polymer density of the second absorbent body, the amount of liquid retained is increased in the paper diaper main body portion located far from the skin.

<Invention of Claim 7>
The main body of the disposable diaper has standing cuffs extending in the front-rear direction on both sides in the width direction and standing on the skin contact surface side, the auxiliary absorbent member is disposed between the standing cuffs, and the standing cuff and the auxiliary cuff The absorbent article according to any one of claims 2 to 6, wherein the absorbent member is non-adhered.

(Function and effect)
Side leakage from a so-called undercarriage opening due to standing cuffs is prevented.

  As described above, according to the present invention, an absorbent article with improved leakage prevention properties is provided. In particular, an absorbent article is provided in which the ability to prevent side leakage due to the groin is improved.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
“First Embodiment: Example of Absorption Pad”
The first embodiment is an absorption pad. The absorption pad Q1 will be described in detail with reference to FIGS.
The absorbent pad Q1 is used, for example, by being attached to clothing such as underwear and paper diapers in order to improve the absorption of bodily fluids and to absorb a small amount of urination such as light urine leakage. .
The absorbent pad Q1 includes an absorbent body 3 having a certain degree of rigidity between a top sheet 1 that is positioned on the user's skin side and that forms a skin contact surface, and a back sheet 2 that is positioned on the clothing side. It has an intervening layer structure.
The topsheet 1 and the backsheet 2 have substantially the same shape as the planar outer shape of the absorbent pad Q1, and the front and rear end portions and both side portions extend outward from the absorbent body 3, and are joined at the extended portions. Has been.
The joining method is not particularly limited. According to known methods. For example, hot melt bonding, ultrasonic sealing, heat sealing (thermal fusion), heat pressing (thermocompression bonding), or a combination thereof can be used.
Further, the back sheet 2 is provided with fastening portions 4 for fastening to the clothes at the front and rear portions and the center portion in the longitudinal direction. The specific position and size of the fastening part 4 can be determined as appropriate according to the prior art.
Note that the specific size of the absorbent pad Q1 itself is appropriately determined in consideration of the size of clothing.

Characteristically, the absorbent pad Q1 of the present embodiment is formed with a single easy-to-separate line 5 along the product front-rear direction at the center in the product width direction. 3, 3 exist.
The absorbent bodies 3 and 3 are made of known absorbent cores 3B and 3B formed by interspersing absorbent polymers in fibers such as nonwoven fabric and piled pulp, respectively, for example, crepe paper, nonwoven fabric, perforated sheet and the like. The liquid sheets 3A and 3A are formed by being wrapped with a frame, etc. The hot melt (not shown) is formed with respect to at least one of the top sheet 1 and the back sheet 2 so as to avoid the easy separation line 5 and to be separated from each other. The position is fixed by bonding with an adhesive or the like.
The easy separation line 5 is a state that is not separated in a normal state, but when an external force is applied such as pulling a section that sandwiches the line in a different direction, the section is separated by the line.
Specifically, there are perforated lines, creases, low basis weight lines formed by providing a low-tsubo portion in a line, lines formed by applying a paper strength reducing agent in a line, and the like.
The topsheet may be colored on the easy separation line or along the easy separation line so that the easy separation line 5 is easily visible.
Further, it is desirable that the vicinity of the easy separation line 5 is bonded to the top sheet and the back sheet by heat fusion, thermocompression bonding, bonding with a hot melt adhesive, or the like. In this way, the absorbers 3 and 3 are prevented from being exposed when they are separated by an easy separation line.

Here, the surface sheet 1 is preferably a woven fabric or non-woven fabric having liquid permeability, and particularly preferably a non-woven fabric.
Nonwoven fabrics can be made from synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and natural fibers such as cotton. Spunlace method, spunbond method, thermal bond Processed by an appropriate processing method such as a method, a melt blown method, or a needle punch method can be used.
The spunlace method is excellent in terms of flexibility and drape, and the thermal bond method is excellent in terms of being bulky and soft.
Further, a non-woven fabric having a layer structure such as an SMS non-woven fabric, a point bond non-woven fabric, a plastic film such as a polyethylene film, or a laminated non-woven fabric obtained by laminating a plastic film and a non-woven fabric can also be used.

As the back sheet 2, either a liquid-permeable or liquid-impermeable sheet can be used. For example, if it is set as the goods assumed to use together with the product which has liquid absorption retainability, such as a paper diaper, a back surface sheet can be made liquid-permeable. If the product is intended to be used in combination with a product that does not have liquid absorption retention in itself, such as underwear, the back sheet 2 is liquid-impermeable.
If the back sheet 2 is liquid permeable, it can be formed of the same material as the top sheet 1. That is, it is a nonwoven fabric or the like.
If the back surface sheet 2 is liquid-impermeable, for example, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition to this, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or a nonwoven fabric sheet having substantially impervious liquid permeability through a waterproof film can also be used.

As the fibers used for the absorbent core 3B, conventionally known absorbent core materials such as nonwoven fabrics and piled pulp can be used.
Examples of the superabsorbent polymer used in the absorbent core 3B include carboxymethylcellulose, polyacrylic acid and salts thereof, crosslinked acrylate polymer, starch-acrylic acid graft copolymer, starch-acrylonitrile graft copolymer. A hydrolyzate, a cross-linked polyoxyethylene, a cross-linked carboxymethyl cellulose, polyethylene oxide, a partially cross-linked polymer such as polyacrylamide, or a copolymer of isobutylene and maleic acid is preferably used. What added the blocking inhibitor in order to suppress the blocking property by moisture absorption of a product can also be used. In addition, the superabsorbent polymer has various forms such as powder, particles, granules, pellets, sol, suspension, gel, film, and nonwoven fabric. Any of them can be used in the present invention, and a particulate material is particularly preferably used.

The fastening part 4 is not particularly limited as long as the fastening part 4 can take a form that can be fastened to the clothing as long as the effects of the present invention are not hindered.
For example, the thing which fastens with respect to clothing by adhesiveness and the thing by a mechanical fastener mechanism are mentioned. Such a fastening part 4 can be formed by application of a pressure-sensitive adhesive, bonding of a pressure-sensitive adhesive sheet, and bonding of a male material sheet and a female material sheet of a mechanical fastener.
If the fastening portion 4 is to have adhesiveness, it is protected with release paper or the like in order to prevent adhesion to unintended parts due to the adhesiveness except during use.
The pressure-sensitive adhesive, pressure-sensitive adhesive sheet, and release paper may be appropriately selected from those conventionally used in absorbent pads, sanitary napkins, and the like.

Next, a method of using the absorbent pad Q1 of the present embodiment will be particularly described using an example of using the disposable diaper Z together.
When the absorbent pad Q1 of this embodiment is completely separated by the easy separation line 5, two absorbent pad pieces Q1 ′ and Q1 ′ are obtained as shown in FIG.
Therefore, for example, as shown in FIG. 4, if these absorbent pad pieces Q1 ′ and Q1 ′ are fixed along the undercarriage opening edge L of the paper diaper Z, the absorbent is absorbed in the vicinity of the undercarriage opening edge L of the paper diaper Z. As a result, a leak from the undercarriage openings L, L is prevented.
Moreover, if the absorption pad Q1 of this form is cut | disconnected by the easy separation line 5 only a predetermined distance from one end, as shown in FIG. 5, it will become a form which has strip-shaped free parts F and F especially.
Therefore, for example, as shown in FIG. 6, the base ends of the strip-shaped free portions F and F are fastened so as to be positioned at the crotch portion of the paper diaper, and the free portions F and F are folded in a bellows shape. If the bundle is increased in thickness, the free partial bundle can be used as a filling to fill the space between the groin portion. Thereby, the leak resulting from an inguinal part is prevented.
For example, as shown in FIG. 7, when the strip-shaped free parts F and F are crossed, a slit hole S is formed on the free part base end side. If the slit hole S is fixed to the paper diaper Z so as to face the male penis, the penis passes through the slit hole S and the penis is positioned between the absorbent pad Q1 and the top sheet 1 of the paper diaper Z. This prevents leakage due to the orientation of the penis.
Further, if the absorbent pad Q1 of this embodiment is cleaved only at an intermediate portion while leaving a non-separated portion at a predetermined distance from both ends, a cleaved hole C is formed as shown in FIG.
Therefore, for example, as shown in FIG. 9, if the cleft C is fixed to the paper diaper Z so as to face the urethral opening or anus, urine and feces are guided into the pocket P and remain on the skin contact surface. Discomfort caused by urine and feces is improved.

“Second Embodiment: Example of a disposable diaper”
The second implementation is a disposable diaper. Hereinafter, the paper diaper Z1 will be described in detail with reference to FIGS.
The paper diaper Z1 of the present embodiment includes a paper diaper main body Y1 and an auxiliary absorption member X1.
The disposable diaper main body Z1 has a layer structure in which an absorbent body 13 is interposed between a liquid-permeable top sheet 11 and a liquid-impervious back sheet 12, and a locking tape provided on both sides of the back side waist part. By engaging 16 and 16 with the locking portion 17 of the ventral abdomen, a so-called tape-type paper diaper is formed which is a clothing aspect. In addition, the form of the other kind of paper diaper generally called a pants type can also be taken.
The liquid-permeable top sheet 11 and the liquid-impervious back sheet 12 have substantially the same shape as the planar outer shape of the paper diaper main body Y1, and the front and rear end portions and both side portions extend outward from the absorber, and these extensions It is joined at the site. The joining method is not particularly limited. According to known methods. For example, hot melt bonding, ultrasonic sealing, heat sealing (thermal fusion), heat pressing (thermocompression bonding), or a combination thereof can be used.

The liquid-permeable surface sheet 11 has a net-like sheet material obtained by plain weaving of yarn such as nylon and polyethylene terephthalate, a film sheet material having a large number of through holes, a film sheet material such as polyethylene and polypropylene, and liquid permeability. Woven fabrics and nonwoven fabrics are suitable, and nonwoven fabrics are particularly suitable. Nonwoven fabrics can be made from synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and natural fibers such as cotton. Spunlace method, spunbond method, thermal bond Processed by an appropriate processing method such as a method, a melt blown method, or a needle punch method can be used.
The spunlace method is excellent in terms of flexibility and drape, and the thermal bond method is excellent in terms of being bulky and soft.
Further, a non-woven fabric having a layer structure such as an SMS non-woven fabric, a point bond non-woven fabric, a plastic film such as a polyethylene film, or a laminated non-woven fabric obtained by laminating a plastic film and a non-woven fabric can also be used.

  The liquid-impermeable back sheet 12 is a microporous resin sheet obtained by kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. Are preferably used. As the liquid-impermeable back sheet 2, one obtained by laminating an exterior sheet made of a nonwoven fabric or the like on the outer surface of the resinous sheet is preferably used for improving the touch.

  The absorbent body 13 has a known configuration in which an absorbent core in which absorbent polymers are dispersed in fibers such as piled pulp and nonwoven fabric is covered with a permeable sheet such as crepe paper, nonwoven fabric sheet, and perforated sheet. Can do.

  Examples of superabsorbent polymers include carboxymethylcellulose, polyacrylic acid and its salts, crosslinked acrylate polymer, starch-acrylic acid graft copolymer, hydrolyzate of starch-acrylonitrile graft copolymer, and polyoxyethylene crosslinked Products, crosslinked products of carboxymethyl cellulose, polyethylene oxide, polyacrylamide and other partially crosslinked polymers, or a copolymer of isobutylene and maleic acid are preferably used. What added the blocking inhibitor in order to suppress the blocking property by moisture absorption of a product can also be used. In addition, the superabsorbent polymer has various forms such as powder, particles, granules, pellets, sol, suspension, gel, film, and nonwoven fabric. Any of them can be used in the present invention, and a particulate material is particularly preferably used.

  The locking tapes 16, 16 are known ones in which a male material of a mechanical fastener is arranged in part, and as described above, the male material part is engaged with a locking part 17 constituted by a female material arranged on the ventral side. It stops and it becomes a clothing form.

On the other hand, on the skin contact surface side of the paper diaper main body Y1 of this embodiment, the elastic elastic members 23 and 23 for lifting provided along the longitudinal direction (front-rear direction) stand up along the longitudinal direction on the skin side. So-called standing cuffs (also called barrier cuffs) 14 and 14 are provided. The specific configuration of the standing cuffs 14, 14 is not particularly limited. In addition to the illustrated example, conventionally known configurations of the standing cuffs 14 and 14 can be appropriately employed.
On the other hand, the auxiliary absorbent member X1 has a flat plate shape, and is placed on the liquid-permeable surface sheet 11 between the barrier cuffs 14 and 14 of the paper diaper main body Y1, and is spirally applied by the hot melt adhesive Hs. The liquid surface sheet 11 is detachably bonded. Note that partial peeling is also possible.

Further, the auxiliary absorbent member X1 and the barrier cuff are not adhered, and the presence of the auxiliary absorbent member is configured not to affect the standing of the barrier cuff.
The auxiliary absorbent member X1 includes a top sheet 1 positioned on the skin contact surface, a back sheet 2 facing the liquid-permeable top sheet 11 of the paper diaper main body Y1, and a second liquid-absorbing liquid interposed between the two sheets. It has a layered structure.

  The top sheet 1 and the back sheet 2 have substantially the same shape as the planar outer shape of the auxiliary absorbent member X1, the front and rear end portions and both side portions extend outward from the absorber, and are joined at the extended portions. ing. The joining method is not particularly limited. According to known methods. For example, hot melt bonding, ultrasonic sealing, heat sealing (thermal fusion), heat pressing (thermocompression bonding), or a combination thereof can be used.

The magnitude | size of the auxiliary | assistant absorption member X1 can be made into a suitable magnitude | size according to the magnitude | size of the paper diaper main-body part Y1. If standing cuffs are provided on the paper diaper main body Y1 as in this embodiment, the width is preferably less than the distance between the standing cuffs 14,14. The length in the front-rear direction is a length that covers at least the range from the crotch part to the front body side of the disposable diaper main body Y1. Preferably, the length is sufficient to cover the range from the back body side to the front body side including the crotch part. However, it is desirable to locate the front body side edge and the back body side edge in a range not exceeding the ventral side or back side opening edge of the disposable diaper main body. In the present invention and the present specification, the crotch portion refers to the front-rear direction of the product from the closest portion between the central portion of the product divided into three equal parts in the longitudinal direction or the arc-shaped recesses constituting the left and right foot folds. The range is about 1 to 5 cm.
On the other hand, the auxiliary absorbent member X1 is characteristically formed with one easily separating line 5 along the front-rear direction at the center in the width direction. Absorbers 3 and 3 are arranged.

Each of the second absorbent bodies 3 and 3 is made of known absorbent cores 3B and 3B formed by interspersing an absorbent polymer in fibers such as nonwoven fabric and piled pulp, for example, crepe paper, nonwoven fabric, perforated sheet, etc. The liquid-permeable sheets 3A and 3A are encased in a forehead roll or the like.
The size of the absorber is substantially the same as the size of the section, and is arranged slightly spaced apart from each other so as to avoid the easy separation line 5, and is not shown with respect to at least one of the top sheet 1 or the back sheet 2. The position is fixed by bonding with a hot melt adhesive or the like.

The easy separation line 5 is a state that is not separated in a normal state, but when an external force is applied such as pulling a section that sandwiches the line in a different direction, the section is separated by the line.
Specifically, there are perforated lines, creases, low basis weight lines formed by providing a low-tsubo portion in a line, lines formed by applying a paper strength reducing agent in a line, and the like.
The topsheet may be colored on the easy separation line or along the easy separation line so that the easy separation line 5 is easily visible.
In addition, it is desirable that the vicinity of the easy separation line 5 is bonded to the top sheet 1 and the back sheet 2 by heat fusion, thermocompression bonding, adhesion with a hot melt adhesive, or the like. If it does in this way, when it cuts off by the easy cut-off line 5, exposure of the 2nd absorbers 3 and 3 will be prevented.

Here, as the hot melt adhesive for bonding the auxiliary absorbent member X1 and the paper diaper main body Y1, known ones used for this type of absorbent article can be used. For example, what contains the below-mentioned base polymer, the adhesiveness provision component of a solid at normal temperature, a plasticizer component, and antioxidant as a structural component is used.
The adhesion-imparting component is used for the purpose of exerting adhesiveness during heating or for the purpose of ensuring the tackiness at room temperature. Generally, the adhesion-imparting component is about 11% by weight to about 60%. Contains% by weight. Specific examples of adhesion-imparting components include rosin resins, polyterpene resins, terpene phenol resins, dicyclopentadiene petroleum resins, aliphatic petroleum resins, aromatic petroleum resins, copolymer petroleum resins, alicyclic rings. Examples thereof include one or a mixture of two or more selected from the group consisting of group petroleum resins, xylene resins and elastomers.

  As the plasticizer component, waxes are suitable, and as such waxes, paraffin waxes, microcrystalline waxes, polyethylene waxes, polypropylene waxes, by-product polyethylene waxes, Fischer-Tropsch (Fischer- Tropsch) waxes, oxidized Fischer-Tropsch waxes and functionalized waxes such as hydroxy stearamide waxes and fatty acid amide waxes are preferably used. Especially in the field of absorbent articles, the use of synthetic high melting point waxes including high density low molecular weight polyethylene waxes, by-product polyethylene waxes and Fischer-Tropsch waxes is suitable. Moreover, modified waxes such as vinyl acetate modified and maleic anhydride modified, and oxidized wax can also be used. If waxes are used, they should be added in an amount of about 10% to about 60% by weight, more preferably 25% to 45% by weight, and still more preferably 30% to 40% by weight. The melting point of the wax to be used is 49 to 93 ° C, preferably 54 to 77 ° C, particularly preferably 63 to 74 ° C.

  The antioxidants include high molecular weight hindered phenols and polyfunctional phenols such as sulfur and phosphorus containing phenols. Representative hindered phenols are 1,3,5-trimethyl-2,4,6-tris- (3,5-di-tert-butyl-4-hydroxybenzyl) -benzene, pentaerythrityl tetrakis-3. (3,5-di-t-butyl-4-hydroxyphenyl) -propionate, n-octadecyl-3 (3,5-di-t-butyl-4-hydroxyphenyl) -propionate, 4,4′-methylenebis ( 2,6-t-butyl-phenol), 4,4′-thiobis (6-t-butyl-o-cresol), 2,6-di-t-butylphenol, 6- (4-hydroxyphenoxy) -2, 4-bis (n-octyl-thio) -1,3,5 triazine, (di-n-octylthio) ethyl 3,5-di-t-butyl-4-hydroxy-benzoate, or sorbitol Hexa [3- (3,5-di -t- butyl-4-hydroxy - phenyl) - propionate] is.

  In addition, antioxidants can be used together with known synergists such as thiodipropionate esters and phosphites. These serve to further enhance the performance of the antioxidant. In particular, distearyl thiodipropionate is useful. These stabilizers are generally used in an amount of about 0.1 to 1.5% by weight, preferably 0.25 to 1.0% by weight.

  As the base polymer, any of a styrene block copolymer, a polyurethane block copolymer, a polyester block copolymer, a polyamide block copolymer, and a copolymer blend can be preferably used. As the styrene block copolymer, styrene-butadiene-styrene (S-B-S) or styrene-ethylenebutadiene-styrene (S-EB-S) can be used. As the copolymer blend, styrene-ethylenebutadiene-styrene / polypropylene (S-EB-S / PP) or polypropylene / ethylene-propylene (PP / EP) can be used. In addition, polyolefin-based thermoplastic resins can also be used. As the polyolefin, any of polyamide, polyester, polyethylene, and polypropylene can be used.

The method for applying the hot melt adhesive is not particularly limited, but since the paper diaper main body Y1 and the auxiliary absorbent member X1 can be manufactured separately and can be bonded easily, the molten hot melt adhesive is applied. The method is preferred.
For example, there is a method in which a melted hot melt adhesive is solid-coated, straight-coated, spiral-coated and then bonded to the liquid-permeable surface sheet 11 of the paper diaper main body Y1 or the back sheet 2 of the auxiliary absorbent member X1. Is preferred.
Spiral coating is particularly suitable from the standpoint of product softness, adhesion reliability, and strength retention when partial peeling described later.

The peeling strength between the auxiliary absorbent member X1 and the disposable diaper body Y1 is set to an appropriate strength so that the peeling is not performed unless the peeling operation is intentionally performed. This can be achieved by adjusting the composition and coating amount of the hot melt adhesive according to known techniques.
In addition, the surface sheet 1 of the auxiliary | assistant absorption member X1 can be formed with the raw material similar to the liquid-permeable surface sheet 11 of the paper diaper main-body part Y1. For example, the non-woven fabric can be formed of a non-woven fabric. As a constituent fiber, the synthetic fiber such as polyethylene or polypropylene, synthetic fiber such as polyester or polyamide, regenerated fiber such as rayon or cupra, natural fiber such as cotton, etc. A nonwoven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. Further, it may be a non-woven fabric having a layer structure such as an SMS non-woven fabric, a point bond non-woven fabric, a plastic film such as a polyethylene film, or a laminated non-woven fabric obtained by laminating a plastic film and a non-woven fabric.

  The back sheet 2 of the auxiliary absorbent member X1 may be either liquid permeable or liquid impermeable. If it is liquid-permeable, it can be formed of the same material as the top sheet 1. If it is made liquid-impermeable, it can be formed with the same material as the liquid-impermeable back sheet 12 of the paper diaper main body Y1. For example, a sheet material having at least water shielding properties such as an olefin-based resin sheet such as polyethylene or polypropylene is used, but in addition to this, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, and further, a waterproof film is interposed. For example, a non-woven sheet having impermeableness to liquid can be used.

  As the superabsorbent polymer of the second absorbent body 3, the same material as that of the absorbent body of the disposable diaper main body Y1 can be used. For example, carboxymethylcellulose, polyacrylic acid and salts thereof, crosslinked acrylate polymer, starch -Acrylic acid graft copolymer, hydrolyzate of starch-acrylonitrile graft copolymer, cross-linked polyoxyethylene cross-linked product, carboxymethyl cellulose cross-linked product, polyethylene oxide, polyacrylamide etc. A copolymer of isobutylene and maleic acid is preferably used. What added the blocking inhibitor in order to suppress the blocking property by moisture absorption of a product can also be used. In addition, the superabsorbent polymer has various forms such as powder, particles, granules, pellets, sol, suspension, gel, film, and nonwoven fabric. Any of them can be used in the present invention, and a particulate material is particularly preferably used.

Here, if a specific numerical range is shown about the polymer fabric weight, the fiber fabric weight, and the thickness of the paper diaper main body Y1 and the absorbent body 13, a general absorbent body configuration using a piled pulp as a fiber and SAP as a polymer is adopted. If there exists, about the absorber of a paper diaper main-body part, it is good to set it as polymer basis weight 0-200g / m < ² >, fiber basis weight 50-200g / m < ² >, thickness 1-10mm, About the polymer of a 2nd absorber Is preferably a polymer basis weight of 0 to 250 g / m ² , a fiber basis weight of 100 to 400 g / m ² , and a thickness of ² to 15 mm.

  Further, the relationship between the absorbent body 13 of the paper diaper main body portion Y1 and the second absorbent body 3 of the auxiliary absorbent member X1 is such that the absorbent body 13 of the paper diaper main body portion Y1 has an excellent liquid holding amount. The 2 absorber 3 can be made excellent in the liquid absorption rate. In this way, body fluid is quickly absorbed by the second absorbent body 3 close to the skin, and an effect of reducing discomfort during drainage is obtained, and a lot of liquid is held in the paper diaper main body Y1 far from the skin, so that the paper diaper The effect of reducing the replacement frequency is obtained.

  In order to change the characteristics of the absorbent bodies 3 and 13, for example, the fiber density, the polymer density, and the thickness of the absorbent cores of the absorbent bodies 3 and 13 are made different. Specifically, the polymer density of the absorbent body 13 of the paper diaper main body Y1 may be higher than that of the second absorbent body 3, and the fiber density of the second absorbent body 3 may be lower than that of the paper diaper main body Y1. .

Next, a method of using the paper diaper Z1 of this embodiment will be described.
The paper diaper Z1 of the present embodiment assists the skin contact surface of the paper diaper main body Y1 when the auxiliary absorbent member X1 is peeled from the paper diaper main body Y1 by a predetermined distance from the abdomen end and only this peeled portion is cut by the easy-separation line 5. Strip-shaped free portions F and F are formed by a part of the absorbing member X1.
Accordingly, when the strip-shaped free portions F and F are attached to the body, for example, as shown in FIG. 12, if the folding thickness is increased in a bellows shape, the space between the paper diaper main body portion Y1 and the groin portion is increased. It can interpose so that a space may be filled, and the leak prevention effect resulting from an inguinal part will be acquired. The strip-shaped free portions F and F may be used by being wound rather than folded.

  Further, as shown in FIG. 13, when the distal ends of the two strip-shaped free portions F, F are crossed, a slit hole S is formed between the free proximal ends. When the penis is mounted so as to pass through the slit hole S, the strip-shaped free portions F and F of the auxiliary absorbent member X1 are interposed between the penis and the abdomen. By adopting this wearing mode, it is possible to prevent urination from leaking through the waist opening when the penis is in the upward (chest direction) state, and to prevent the urine from leaking out from the waist opening. Leakage from the opening is also prevented. Even if light incontinence occurs when sleeping on the back with the penis facing up, the urine will not stay on the lower abdomen of the incontinence, thus preventing the user from feeling extremely uncomfortable .

On the other hand, if only the center part is torn apart without separating both ends of the easy separation line 5 and only the vicinity of the tearing part is peeled from the paper diaper main body Y1, the skin contact surface is formed as shown in FIG. A cleaved hole C that is cleaved in the front-rear direction is formed. If the cleft C is a position facing the urethral opening or anus, urine and feces are guided to the cleft C, thereby improving discomfort caused by urine and stool remaining on the skin contact surface. .
Further, if the auxiliary absorbent member X1 is separated by tearing off all the easy separation lines and only the vicinity of the tearing part is peeled from the paper diaper main body Y1, the skin contact surface is formed as shown in FIGS. Separated convex ridges X1 ′ and X1 ′ are formed along the front-rear direction by the auxiliary absorbent member pieces, and a groove M is formed between them. Due to the formation of the groove M, urine and feces are guided to the groove, thereby preventing leakage from the product side, particularly the suspension openings L and L.

“Third embodiment”
FIG. 17 shows an absorption pad Q2 according to the third embodiment. Both the absorbent pad Q1 in the first embodiment and the auxiliary absorbent member X1 according to the second embodiment have one easy-separation line 5. However, in the present invention, there are a plurality of easy-separation lines 5 as appropriate. It can be a book.
The absorbent pad Q2 of this embodiment is provided with two easy separating lines 5 and 5 along the front-rear direction. Also in this embodiment, the points where the absorber 3 is arranged in each section, and other sheet materials are the same as those in the first embodiment. Of course, not only the absorbent pad, but also the auxiliary absorbent member may have a plurality of easily separated lines.

“Fourth Embodiment”
An absorbent pad Q3 according to the fourth embodiment is shown in FIG. The absorbent pad Q3 of the fourth embodiment is a thermocompression bonding in which an absorbent body consisting only of a topsheet, a backsheet, and an absorbent core is integrally thermocompression-bonded in a line along the product longitudinal direction at the center in the product width direction. The part 6 is formed, and the easy disconnection line 5 is provided in the thermocompression bonding part 6. This configuration is easy to manufacture, and can prevent scattering of the absorbent polymer in the absorbent body at the time of separation at the easy separation line 5.

“Fifth Embodiment”
Furthermore, if the usage method for forming the strip-shaped free part as shown in FIGS. 12 and 13 is adopted, the paper diaper main body Y2 and the auxiliary diaper Z2 of the fifth embodiment shown in FIG. The absorbent member X2 can be configured such that the hot melt adhesive is solid-coated Hb on the back body side from the crotch part and firmly adhered, and the front body side is spirally applied Hs and adhered from the crotch part. In this embodiment, the strip-shaped free portions F and F can be formed while preventing the auxiliary absorbent member X2 from being completely peeled off from the paper diaper main body Y2.

  The present invention can be used for, for example, a pants-type paper diaper, a stationary paper diaper, an absorption pad, a urine collection pad, an organizing napkin, and the like.

It is a top view of the absorption pad concerning a 1st embodiment. It is the II-II sectional view. It is a top view which shows the 1st usage pattern of the absorption pad of this form. It is a top view for demonstrating the 1st usage method of the absorption pad of this form. It is a top view for demonstrating the 2nd usage pattern example of the absorption pad of this form. It is a top view for demonstrating the 2nd usage method of the absorption pad of this form. It is a top view which shows the 3rd usage pattern of the absorption pad of this form. It is a top view for demonstrating the 3rd usage method of the absorption pad of this form. It is a top view for demonstrating the 4th usage method of the absorption pad of this form. It is a top view of the paper diaper concerning a 2nd embodiment. It is the XI-XI sectional view. It is a top view for demonstrating the 1st usage pattern and usage method of the paper diaper of this form. It is a top view for demonstrating the 2nd usage pattern and usage method of the paper diaper of this form. It is a top view for demonstrating the 3rd usage pattern and usage method of the paper diaper of this form. It is a top view for demonstrating the 4th usage pattern and usage method of the paper diaper of this form. It is the XVI-XVI sectional view. It is a top view of the absorption pad concerning a 3rd embodiment. It is sectional drawing of the absorption pad concerning 4th Embodiment. It is a top view of the paper diaper concerning a 5th embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Top sheet, 2 ... Back sheet, 3 ... Absorber (2nd absorber), 3A ... Absorption core, 3B ... Crepe paper, 4 ... Fastening part, 5 ... Easy separation line, 6 ... Line-shaped thermocompression bonding part , F ... strip-shaped free part, S ... slit hole, C ... fissure opening, P ... pocket, 11 ... liquid-permeable surface sheet, 12 ... liquid-impermeable back sheet, 13 ... absorber, 14 ... standing cuff, 16 DESCRIPTION OF SYMBOLS Fastening tape, 17 ... Locking part (female material), Hs ... Spiral hot melt adhesive part, Hb ... Solid hot melt adhesive part, 23 ... Elastic elastic member (thread rubber), L ... Suspension opening edge, M ... Groove part, Q1-Q3 ... absorption pad, X1, X2 ... auxiliary absorption member, Y1, Y2 ... paper diaper main body part, Z, Z1, Z2 ... paper diaper.

Claims (7)

An absorbent article in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet constituting a non-skin contact surface,
A non-skin contact surface has a fastening portion for fastening to clothing;
Has an easy separation line along the longitudinal direction, and
Absorbers exist in each of the compartments separated by the easy separation line,
An absorbent article characterized by the above. A paper diaper main body part in which an absorbent body is interposed between the liquid permeable surface sheet and the liquid impermeable back sheet, and the liquid permeable surface sheet in a range from at least the crotch part to the front body side of the paper diaper main body part. And an auxiliary absorbent member disposed on top of each other,
The auxiliary absorbent member has a structure in which a second absorbent body is interposed between a liquid-permeable surface sheet constituting a skin contact surface and a back sheet constituting a non-skin contact surface,
Has an easy separation line along the front-rear direction starting from the ventral side edge,
There is an absorber in each of the sections separated by this easy separation line, and
An absorbent article, wherein a part or all of the back sheet side is detachably bonded to the liquid-permeable surface sheet of the paper diaper main body.   The absorbent article according to claim 2, wherein the absorbent article is detachably bonded via a hot melt adhesive.   The absorptive article according to any one of claims 1 to 3 which has two or more easy cut lines.   Both the absorbent body and the second absorbent body have an absorbent core in which an absorbent polymer is dispersed in the fiber, and the fiber density of the second absorbent body is lower than the fiber density of the absorbent body of the paper diaper main body. The absorptive article according to any one of claims 2 to 4.   Both the absorbent body and the second absorbent body have an absorbent core in which an absorbent polymer is dispersed in the fiber, and the polymer density of the absorbent body of the paper diaper body is higher than the polymer density of the second absorbent body. The absorbent article according to any one of claims 2 to 5.   The main body of the disposable diaper has standing cuffs extending in the front-rear direction on both sides in the width direction and standing on the skin contact surface side, the auxiliary absorbent member is disposed between the standing cuffs, and the standing cuff and the auxiliary cuff The absorbent article according to any one of claims 2 to 6, wherein the absorbent member is non-adhered.

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