JP2022086224A - Absorbent article - Google Patents

Abstract

To prevent leakage of body fluid reliably by making side end gathers hard to shrink inside in the width direction and fitting to a body.SOLUTION: An absorbent article includes: an absorber 4; side sheets 7 arranged in full length in a back and forth direction at both end parts on a skin contact surface side; and a plurality of elastic stretch members 11 arranged along the back and forth direction and at intervals in a width direction in an outside part in the width direction of the side sheets 7. In both end parts of the absorber 4 corresponding to a front end and a rear end of the elastic stretch member 11, absorber protrusions 15 protruding sideways are formed. Both end parts of the elastic stretch members 11 arranged at least on an innermost side in the width direction of the elastic stretch members 11 overlap the absorber protrusion 15 in the thickness direction.SELECTED DRAWING: Figure 1

Description

The present invention mainly relates to absorbent articles used for incontinence pads, menstrual napkins, pantyliners, medical pads, toiletries, disposable diapers, etc. The present invention relates to an absorbent article in which a side end gather is formed by arranging a sheet and an elastic stretchable member along the front-rear direction on the outer side portion in the width direction of the side sheet.

Conventionally, as shown in FIG. 9, a liquid-impermeable back sheet 51 made of a polyethylene sheet or a polyethylene sheet laminated non-woven fabric or the like and a liquid-permeable front sheet 52 made of a non-woven fabric or a liquid-permeable plastic sheet or the like have been used. The absorber 53 is interposed between the side sheets 53, and the side sheets 54 and 54 are provided on both sides on the skin contact surface side. An absorbent article 50 in which a side end gather 57 is formed on a side flap portion 56 extending laterally of the absorber 53 by arranging the 55 is known (for example, Patent Documents 1 to 3 below). reference.).

Japanese Unexamined Patent Publication No. 2018-167105 Japanese Unexamined Patent Publication No. 2016-52400 Japanese Unexamined Patent Publication No. 2015-89382

In such an absorbent article 50, a highly flexible sheet is often used as the side sheet 54 in order to emphasize a soft touch. However, when a soft sheet is used as the side sheet 54, as shown in FIG. 9, the side end gathers 57 tend to shrink inward in the width direction due to the contraction force of the elastic elastic member 55, thereby absorbing the elastic members. When the sex article 50 is attached, the side edge gathers 57 do not fit the body, and there is a problem that body fluid leaks easily.

Therefore, the main problem of the present invention is that side edge gathers are formed by arranging elastic elastic members along the front-rear direction on the outer side portions in the width direction of the side sheets arranged on both side portions on the skin contact surface side. It is an object of the present invention to provide an absorbent article in which the side end gathers are less likely to shrink inward in the width direction, and the absorbent article is fitted to the body and can surely prevent leakage of body fluid.

In order to solve the above problems, as a first aspect, the absorber, the side sheets arranged on both sides of the skin contact surface side over the entire length in the front-rear direction, and the outer side portions in the width direction of the side sheets. It is equipped with a plurality of elastic elastic members arranged along the front-rear direction and at intervals in the width direction.
Absorber convex portions protruding laterally are formed on both side portions of the absorber corresponding to the front end portion and the rear end portion of the elastic elastic member.
Provided is an absorbent article characterized in that, among the elastic stretchable members, at least both ends of the elastic stretchable member arranged on the innermost side in the width direction overlap with the convex portion of the absorber in the thickness direction. ..

In the first aspect, in an absorbent article in which a plurality of elastic elastic members are arranged on the outer side in the width direction of the side sheet to form side end gathers, the elastic elastic members arranged on the side edge gathers. Absorbent protrusions are formed on both sides of the absorber corresponding to the front end portion and the rear end portion of the above, respectively, and among the plurality of elastic elastic members, at least the most elastically arranged elastic in the width direction. Both ends of the elastic member overlap with the convex portion of the absorber in the thickness direction. In the absorbent article according to the present invention, the front and rear ends of the side end gathers are reinforced by the rigidity of the convex part of the absorber protruding laterally, so that the side end gathers do not shrink inward in the width direction and the absorber does not shrink. It will be installed in a state of being widely spread on the side of the. Therefore, the side edge gathers are surely fitted to the body, and the leakage of body fluid can be surely prevented.

As a second aspect, the absorbent article according to claim 1, wherein the length of the elastic elastic member overlapping the convex portion of the absorber is 5 mm or more.

In the second aspect, by setting the overlapping length between the end portion of the elastic stretchable member and the convex portion of the absorber to be a predetermined length or more, the front and rear end portions of the elastic stretchable member are surely formed by the convex portion of the absorber. It is reinforced and the effect of greatly expanding the side edge gathers is improved.

As a third aspect, the absorbent article is folded in the front-rear direction along the front fold line and the rear fold line along the width direction, respectively, in the front portion and the rear portion in the individually packaged state.
The absorbent article according to claim 1 or 2, wherein the front fold line and the rear fold line are provided on the outer side in the front-rear direction from the portion where the elastic elastic member overlaps the convex portion of the absorber, respectively. Will be done.

In the third aspect, when the absorbent article is individually folded in three in the front-rear direction along the front-side folding line and the rear-side folding line, the front-side folding line and the rear-side folding line are elastically stretched members, respectively. Is provided on the outside in the front-rear direction from the portion overlapping the convex portion of the absorber. As a result, it is possible to prevent the function of the absorber convex portion from expanding the side edge gathers from being deteriorated due to the folding habit formed at the fold line position at the time of individual packaging, and the side edge gathers can be more reliably expanded. ..

As a fourth aspect, the absorbent article according to any one of claims 1 to 3 is provided, wherein the absorbent polymer does not contain the superabsorbent polymer.

In the fourth aspect, the superabsorbent polymer that has absorbed the body fluid expands to prevent the adhesive between the side sheet constituting the side edge gather and the other member from peeling off. Does not contain a super absorbent polymer.

As a fifth aspect, the absorber is composed of a laminated body of a plurality of sheet-like absorbers.
The absorbent article according to any one of claims 1 to 4, wherein the absorbent body convex portion is formed on at least one of the laminated bodies.

In the fifth aspect, if the convex portion of the absorber is thick, the adhesion between the side sheet constituting the side end gather and the other member is likely to be peeled off, so that the absorber can be used as a plurality of sheet-shaped absorbers. It is composed of a laminated body, and by forming the absorbent body convex portion on at least one sheet-shaped absorber of the laminated body, the absorbent body convex portion is formed with a thickness smaller than that of the absorber of the main body portion. ..

As a sixth aspect, the absorbent article according to any one of claims 1 to 5, wherein the thickness of the convex portion of the absorber is gradually reduced toward the outside in the width direction.

In the sixth aspect, if the thickness of the convex portion of the absorber is constant and thick in the width direction, the adhesion between the side sheet constituting the side end gather and the other member is likely to be peeled off, so that the convex portion of the absorber is easily peeled off. The thickness of the is gradually reduced toward the outside in the width direction.

As a seventh aspect, the absorbent article is provided as the absorbent article according to any one of claims 1 to 6, which is an incontinence pad.

The incontinence pad is formed in a size that covers only the body fluid draining portion of the wearer and its surroundings, and has a structure in which body fluid easily leaks from the side portion as compared with disposable diapers and the like. In addition, the body fluid mainly absorbed by the incontinence pad is urine, and since the viscosity of the body fluid is smaller than that of menstrual blood mainly absorbed by menstrual napkins, it easily flows on the surface and spreads over a wide area. Leakage from the department is of particular concern. Therefore, in the seventh aspect, among the absorbent articles, the side end gathers on both sides of the incontinence pad, which tends to leak body fluid (urine) from both sides, are widened so that the side end gathers are widened. It fits the body and ensures that fluid leakage is prevented.

As described in detail above, according to the present invention, the side edge gathers are less likely to shrink inward in the width direction, and can be fitted to the body to reliably prevent the leakage of body fluid.

It is a partially broken development view of the incontinence pad 1 which concerns on this invention. FIG. 1 is a view taken along the line II-II of FIG. FIG. 3 is a view taken along the line III-III of FIG. FIG. 1 is a view taken along the line IV-IV of FIG. It is an enlarged plan view of the absorber convex portion 15. It is an enlarged plan view of the absorber convex portion 15 which concerns on a modification. It is a cross-sectional view of the incontinence pad 1 according to the modified example (the figure corresponding to the view taken along the line III-III in FIG. 1). It is a cross-sectional view of the incontinence pad 1 according to the modified example (the figure corresponding to the view taken along the line III-III in FIG. 1). It is a perspective view of the conventional absorbent article 50.

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

[Basic configuration of incontinence pad 1]
As shown in FIGS. 1 to 4, the incontinence pad 1 according to the present invention includes a liquid-impermeable back sheet 2 made of a polyethylene sheet or the like, and a liquid-permeable front sheet 3 for rapidly permeating urine or the like. The absorbent body 4 interposed between the two sheets 2 and 3, the hydrophilic second sheet 6 arranged between the surface sheet 3 and the absorbent body 4 as needed, and the skin contact surface side. Mainly composed of side sheets 7 and 7 arranged on both sides of the absorber over the entire length in the front-rear direction, and around the absorber 4, the back surface sheet 2 and the front surface thereof are end edges in the front-rear direction. The back surface sheet 2 and the side sheet are joined to the outer edge portion of the sheet 3 by an adhesive such as hot melt or a joining means such as a heat seal, and at both side edges thereof, the back surface sheet 2 and the side sheet extend laterally from the absorber 4. 7 is joined by an adhesive such as hot melt or a joining means such as heat seal.

Hereinafter, the structure of the incontinence pad 1 will be described in more detail.
As the back surface sheet 2, a sheet material having at least water impermeability such as polyethylene and polypropylene is used, but in addition to this, a non-woven fabric sheet (in this case) is used after substantially impermeableness is ensured by interposing a waterproof film. Can be used to form a back sheet with a waterproof film and a non-woven fabric.) In recent years, from the viewpoint of preventing stuffiness, those having moisture permeability have tended to be preferably used. The water-impervious / moisture-permeable sheet material has microporous properties obtained by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in a uniaxial or biaxial direction. Sheets are preferably used.

Next, as the surface sheet 3, a perforated or non-perforated non-woven fabric, a porous plastic sheet, or the like is preferably used. The material fibers constituting the non-woven fabric can be, for example, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based and polyamide-based, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A non-woven fabric obtained by an appropriate processing method such as a lace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punching method can be used. Among these processing methods, the spunlace method is excellent in that it is rich in flexibility and drapeability, and the thermal bond method is excellent in that it is bulky and has high compression stability. When a large number of through holes are formed in the surface sheet 3, the body fluid is quickly absorbed, and the dry touch property is excellent. The fibers of the non-woven fabric may be either long fibers or short fibers, but it is preferable to use short fibers in order to give the texture of the towel cloth. Further, in order to facilitate the embossing treatment, it is preferable to use an olefin fiber such as polyethylene or polypropylene having a relatively low melting point. Further, a core-sheath type fiber having a high melting point fiber as a core and a low melting point fiber as a sheath, a side-by-side type fiber, and a composite fiber of a split type fiber can also be preferably used.

The absorber 4 interposed between the back surface sheet 2 and the front surface sheet 3 is composed of, for example, cotton-like pulp and a super absorbent polymer. The super absorbent polymer is mixed in the pulp constituting the absorber, for example, as a granular powder. Examples of the pulp include cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. In the illustrated example, the planar shape is a vertically long, substantially oval shape that is long in the front-rear direction of the pad. In order to maintain the shape of the absorber 4 and improve the diffusivity, the absorber 4 may be surrounded by an encapsulating sheet (not shown) made of crepe paper or a non-woven fabric.

Further, synthetic fibers may be mixed with the absorber 4. As the synthetic fiber, for example, polyolefin-based fibers such as polyethylene or polypropylene, polyester-based fibers such as polyethylene terephthalate and polybutylene terephthalate, polyamide-based fibers such as nylon, and copolymers thereof can be used, and these two types can be used. It may be a mixture. Further, composite fibers such as core-sheath type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath, side-by-side type fibers, and split type fibers can also be used. In the case of hydrophobic fibers, it is desirable to use the synthetic fibers surface-treated with a hydrophilic agent so as to have an affinity for body fluids.

If necessary, the hydrophilic second sheet 6 arranged adjacent to the non-skin side of the surface sheet 3 may be one having hydrophilicity with respect to body fluids. Specifically, a material having hydrophilicity by using recycled fibers such as rayon and cupra and natural fibers such as cotton is used, or olefin-based, polyester-based, polyamide-based, etc. such as polyethylene or polypropylene are synthesized. Fibers obtained by surface-treating the fibers with a hydrophilizing agent to impart hydrophilicity can be used. Further, composite fibers such as core-sheath type fibers having a high melting point fiber as a core and a low melting point fiber as a sheath, side-by-side type fibers, and split type fibers can be used. It is desirable that the second sheet 6 and the absorber 4 (encapsulated sheet) are joined by a hot melt adhesive or the like. By joining the second sheet 6 and the absorber 4, the body fluid can be rapidly transferred from the second sheet 6 to the absorber 4.

Side sheets 7 and 7 are provided on both sides of the incontinence pad 1 on the skin contact surface side along the front-rear direction and over the entire length of the incontinence pad 1, and the outer portions of the side sheets 7 and 7 are provided. The back surface sheet 2 is extended laterally, and the side sheet 7 portion and the back surface sheet 2 portion extending laterally are joined to each other with a hot melt adhesive or the like to form a side surface. A flap portion is formed.

As the side sheet 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of important functions. For example, if the function of preventing the penetration of urine or the like or enhancing the feeling of touch is emphasized, SSHS, SMS, SMMS, etc. coated with a silicon-based, paraffin-based, alkylchromic chloride-based water repellent, etc. It is desirable to use a water-repellent treated non-woven fabric, and if the absorbability of body fluid is important, a method of coexisting and polymerizing a compound having a hydrophilic group, such as an oxidation product of polyethylene glycol, in the process of producing synthetic fibers, or chloride. The synthetic fiber is swelled or made porous by a method of treating with a metal salt such as ferrous tin to partially dissolve the surface to make it porous and deposit a metal hydroxide, and impart hydrophilicity by applying the capillary phenomenon. It is desirable to use a hydrophilically treated non-woven fabric. As the side sheet 7, a sheet formed by an appropriate processing method using natural fiber, synthetic fiber, regenerated fiber or the like as a material can be used.

The outer side portions of the side sheets 7 and 7 are appropriately folded in the width direction, and the elastic elastic member 11 is arranged in the folded portion in the extended state, so that the left and right ends of the incontinence pad 1 are left and right, respectively. A pair of side edge gathers 10 and 10 are formed. Further, in the incontinence pad 1 of the illustrated example, the inner portions of the side sheets 7 and 7 in the width direction are appropriately folded in the width direction, and the elastic elastic member 13 is arranged in the folded portion in the extended state to absorb the absorption. A pair of left and right three-dimensional gathers 12 and 12 standing on the skin side with a position near the substantially side edge of the body 4 as an upright base end are formed, and the three-dimensional gathers 12 and 12 on the inner side in the width direction and the three-dimensional gathers 12 and 12 on the outer side in the width direction are formed. Although a double gather structure is formed by the side end gathers 10 and 10, the arrangement of the three-dimensional gathers 12 and 12 inside in the width direction is arbitrary, and the surface sheet is simply provided without providing the three-dimensional gathers 12. A structure in which the side sheet 7 is laminated on the surface of 3 may be used.

The structure of the side end gather 10 and the three-dimensional gather 12 will be described in more detail. As shown in FIGS. In the illustrated example, a plurality of double sheet portions 7a and 7b are formed on the inner side in the width direction, and appropriate positions are fixed at both ends or in the front-rear direction inside the double sheet portion 7a on the outer side in the width direction. The two elastic elastic members 11 and 11 are arranged along the front-rear direction and at intervals in the width direction, and are appropriately positioned at both ends or in the front-rear direction inside the double sheet portion 7b inside the width direction. One or a plurality of elastic elastic members 13 fixed to the above, one elastic elastic member 13 in the illustrated example, are arranged along the front-rear direction, and the base end portion of the double sheet portion 7a outside in the width direction is described above. The back surface sheet 2 extending laterally from the absorber 4 is adhered to the side end portion by a hot melt adhesive or the like, and the base end portion of the double sheet portion 7b inside in the width direction is the absorber 4 By adhering to the upper surface of the side portion of the surface sheet 3 disposed on the skin contact surface side with a hot melt adhesive or the like, the side edge gathers 10 are formed by the double sheet portion 7a on the outer side in the width direction. The double sheet portion 7b on the inner side in the width direction forms a three-dimensional gather 12 that stands up on the skin side. As shown in FIG. 4, the side sheet 7 is not provided with the elastic elastic members 11 and 13 at the front and rear ends of the incontinence pad 1, and the double sheet portion 7b on the inner side in the width direction is on the outer side. It is folded back and joined to the absorber 4 side with a hot melt adhesive or the like.

[Absorbent convex portion 15]
In the incontinence pad 1, absorbent body convex portions 15 projecting laterally are formed on both side portions of the absorbent body 4 corresponding to the front end portion and the rear end portion of the elastic elastic member 11 arranged in the side end gather 10. Has been done. That is, the absorber protrusions 15 and 15 projecting laterally are formed on the front and rear portions of one side portion of the absorber 4, and the absorber protrusions 15 and 15 project laterally on the front and rear portions of the other side portion, respectively. Absorber protrusions 15 and 15 are formed. The absorber convex portion 15 projects outward in the width direction from the side edge of the absorber 4 in the body fluid discharge portion H of the wearer, and is located inside the side edge of the back surface sheet 2. The absorber convex portion 15 is continuously formed from the absorber 4 of the main body portion without being divided.

The absorber convex portion 15 can be made of the same material as the absorber 4, but may be configured not to contain a super absorbent polymer, as will be described in detail later.

Further, in the incontinence pad 1, among the elastic elastic members 11 and 11 arranged on the side end gathers 10, at least both ends of the elastic elastic member 11 arranged on the innermost side in the width direction are the absorbent body convex portions, respectively. It overlaps with 15 in the thickness direction. That is, the front end portion of the elastic expansion / contraction member 11 overlaps the absorber convex portion 15 provided at the front end portion of the absorber 4, and the absorbent body convex portion 15 provided at the rear end portion of the absorber 4 is elastic. The rear ends of the elastic members 11 overlap. The end portion of the elastic elastic member 11 refers to the front and rear end portions in the range in which the elastic elastic member 11 is adhered to the side sheet 7 and the contraction force thereof acts on the side sheet 7. At both ends of the actual elastic elastic member 11, the elastic elastic member 11 is not adhered to the side sheet 7 and is idle, or is continuously adhered to the side sheet 7 to kill the contractile force of the elastic elastic member 11. The portion where the contractile force of the elastic elastic member 11 does not substantially act on the side sheet 7, such as the portion where the elastic elastic member 11 is cut into small pieces, is excluded. Therefore, the fact that both ends of the elastic elastic member 11 overlap with the absorbent body convex portion 15 in the thickness direction means that both ends of the range in which the elastic force of the elastic elastic member 11 acts and the absorbent body convex portion 15 overlap each other in the thickness direction. It means overlapping.

As described above, in the incontinence pad 1, both ends of the elastic elastic member 11 arranged on the side end gather 10 overlap with the absorbent body convex portion 15 in the thickness direction, so that the absorbent body convex portion 15 The front and rear ends of the side edge gathers 10 are reinforced by the rigidity, the side edge gathers 10 are less likely to shrink inward in the width direction, and the side edge gathers 10 are formed in a state of being widely spread on the side portions of the absorber 4. Become. Therefore, the side edge gathers 10 can be reliably fitted to the body and the leakage of body fluid can be reliably prevented. When the absorbent body convex portion 15 is not provided, the side sheet is shrunk inward in the width direction due to the contraction force of the elastic elastic member, and the side end gathers are not formed in a greatly expanded state (see FIG. 9).

The positional relationship between the absorbent body convex portion 15 and the elastic elastic member 11 will be described in more detail with reference to FIG. 5. FIG. It is a top view which shows the positional relationship of a member 11. The overlapping length A of the elastic elastic member 11 overlapping the absorbent body convex portion 15 is preferably 5 mm or more, preferably 5 to 20 mm, and more preferably 5 to 10 mm. By securing the overlapping length A of a predetermined length or more, the side end gather 10 is surely greatly expanded by the absorber convex portion 15. These overlapping portions start from the central edge of the absorber convex portion 15 in the front-rear direction of the pad to the middle portion in the front-rear direction of the pad of the convex portion 15 of the absorber, preferably in the front-rear direction of the pad of the convex portion 15 of the absorber. From the center line T extending in the pad width direction at the center of the pad, it extends to the outside in the front-rear direction of the pad. As a result, in the flap portion on one side in the width direction, the elastic elastic member 11 is suspended between the absorbent body convex portions 15 and 15 provided in the front and rear, so that the side end gather 10 absorbs the front and rear. The body protrusions 15 and 15 make it more surely spread outward. When the end portion of the elastic elastic member 11 exceeds the absorber convex portion 15 and reaches the outside of the absorber convex portion 15 in the pad front-rear direction, the flap portion outside the pad front-rear direction also contracts from the absorber convex portion 15. Therefore, the effect of providing the absorber convex portion 15 may be reduced, which is not preferable.

As shown in FIG. 5, the length B in the pad front-rear direction of the base end portion where the absorber convex portion 15 protrudes from the absorber 4 of the main body portion is 5 mm or more, preferably 5 to 30 mm, more preferably 5. It should be ~ 20 mm.

Further, as shown in FIG. 5, the planar shape of the absorber convex portion 15 has a chevron shape (substantially semicircular or substantially triangular) bulging outward in the width direction and a base end portion shown in FIG. 6 (A). It can be formed in any shape such as a dented mushroom shape or a substantially quadrangle shown in (B). The planar shape is preferably a shape that is line-symmetrical in the front-rear direction of the pad with the center line T as the center, but is not particularly particular and may be an asymmetrical shape.

As shown in FIG. 5, in the absorber convex portion 15 having a chevron-shaped planar shape, the angle θ of the tangent line extending the outer line of the base end portion (the angle formed by the tangent line of the outer line and the pad front-rear direction line) is , 35 to 55 °, preferably 40 to 50 °, more preferably 45 °.

As shown in FIG. 1, the incontinence pad 1 is individually packaged, and the front portion and the rear portion of the incontinence pad 1 are in the front-rear direction along the front folding line X1 and the rear folding line X2, respectively. Folds to at least three folds. It may be folded in four or more by being folded by one or a plurality of folding lines provided on the front side of the front folding line X1 and / or on the rear side of the rear folding line X2. The front fold line X1 and the rear fold line X2 are each preferably provided on the outside in the front-rear direction of the pad from the portion where the elastic elastic member 11 overlaps the absorbent body convex portion 15. That is, the elastic stretchable member 11 is arranged between the front and rear fold lines X1 and X2, and the length of the elastic stretchable member 11 is shorter than the distance L between the front and rear fold lines X1 and X2. As described above, since the front fold line X1 and the rear fold line X2 are located outside the overlapping portion of the elastic elastic member 11 and the absorber convex portion 15, respectively, the absorber due to the folding habit at the time of individual packaging It is possible to prevent the convex portion 15 from deteriorating the function of expanding the side edge gathers 10, and it is possible to more reliably expand the side edge gathers 10. The distance L between the front and rear fold lines X1 and X2 is preferably 30 to 50%, preferably 35 to 45% of the total length of the incontinence pad 1. As shown in FIG. 1, even if the front fold line X1 and the rear fold line X2 are arranged at positions passing through the front absorber convex portions 15 and 15 and the rear absorber convex portions 15 and 15, respectively. Alternatively, the convex portion 15 of the absorber may be arranged outside the convex portion 15 of the pad in the front-rear direction so that the convex portion 15 does not have a crease.

Next, to explain a modified example of the incontinence pad 1, the superabsorbent polymer can be prevented from being contained in the absorber convex portion 15. When the super absorbent polymer is contained in the convex portion 15 of the absorber, the superabsorbent polymer that has absorbed the body liquid expands, and the adhesion between the side sheet 7 constituting the side edge gather 10 and the back surface sheet 2 is peeled off. In order to prevent this, it is preferable that the absorber convex portion 15 does not contain a super absorbent polymer. It is desirable that the absorber convex portion 15 does not completely contain the superabsorbent polymer, but it may protrude during the manufacturing process in which the superabsorbent polymer is blended with the absorber 4 of the main body portion, or the absorber of the main body portion may be contained. It may be spilled from 4 and contain a small amount of super absorbent polymer. In order to prevent the superabsorbent polymer from being contained in the absorber convex portion 15, when the absorber 4 and the absorber convex portion 15 are integrally manufactured by a stacking fiber, the pulp to be stacked on the absorber 4 of the main body portion is used. It is possible to use a method in which the superabsorbent polymer is contained only in the pulp and the superabsorbent polymer is not contained in the pulp to be stacked on the convex portion 15 of the absorber. Further, as described later, when the absorber 4 is composed of a laminated body of a plurality of sheet-shaped absorbers, it is formed by using a sheet-shaped absorber that does not contain a super absorbent polymer as the sheet-shaped absorber that forms the absorber convex portion 15. You may.

As another modification, as shown in FIG. 7, when the absorber 4 is composed of a laminated body of a plurality of sheet-shaped absorbers, at least one sheet-shaped absorber among the laminated bodies is used. The absorber convex portion 15 can be formed. In the illustrated example, the laminated body is composed of two layers, an upper sheet-like absorber 4a and a lower sheet-like absorber 4b, and predetermined portions on both sides of the lower sheet-like absorber 4b extend laterally. By doing so, the absorber convex portion 15 is formed. If the absorbent body convex portion 15 is formed to have the same thickness as the absorbent body 4 of the main body portion, the adhesion between the side sheet 7 constituting the side edge gather 10 and the back surface sheet 2 is likely to be peeled off, and thus absorption is performed to prevent this. The body 4 is composed of a plurality of sheet-shaped absorbers, of which at least one sheet-shaped absorber forms the absorber convex portion 15. In the sheet-shaped absorber forming the absorbent body convex portion 15, the sheet-shaped absorber and the back surface sheet 2 are adjacent to each other over the entire surface from the viewpoint of preventing the adhesion between the side sheet 7 and the back surface sheet 2 from peeling off. However, it is preferable, but not limited to, a sheet-shaped absorber or a sheet-shaped absorber arranged on the lowermost layer side (back surface sheet 2 side) where the bending stress generated in the sheet-shaped absorber or the back surface sheet 2 is small.

The thickness of the absorber convex portion 15 at the portion where the elastic elastic member 11 overlaps in the thickness direction is preferably 3 to 10 mm. That is, as shown in FIG. 7, the absorber 4 is composed of an upper sheet-shaped absorber 4a and a lower sheet-shaped absorber 4b, and the absorber convex portion 15 is provided only on the lower sheet-shaped absorber 4b. When formed, the thickness of the sheet-shaped absorber 4b is preferably 3 to 10 mm.

Further, as shown in FIG. 8, from the viewpoint of preventing the adhesive between the side sheet 7 constituting the side edge gather 10 and the back surface sheet 2 from peeling off due to the thick thickness of the absorber convex portion 15, the absorber The thickness of the convex portion 15 may be formed so as to gradually decrease toward the outside in the width direction. In this embodiment, since the base end portion of the absorber convex portion 15 is relatively thick, the absorber convex portion 15 is less likely to be deformed, and the side end gather 10 can be more reliably expanded. Even in this case, the thickness of the absorber convex portion 15 at the portion where the elastic elastic member 11 overlaps in the thickness direction is preferably 3 to 10 mm.

[Examples of other forms]
In the above embodiment, the incontinence pad 1 has been described as an example, but the present invention can be applied to other absorbent articles such as menstrual napkins and disposable diapers. Among the absorbent articles, the present invention is particularly desirable to be applied to an incontinence pad in order to greatly widen the side edge gather 10 to prevent leakage of body fluid (urine) from the side portion.

1 ... Incontinence pad, 2 ... Back sheet, 3 ... Front sheet, 4 ... Absorber, 6 ... Second sheet, 7 ... Side sheet, 10 ... Side edge gather, 11 ... Elastic elastic member, 12 ... Three-dimensional gather, 13 ... Elastic Elastic member, 15 ... Absorber convex part

Claims (7)

The absorber, the side sheets arranged on both sides of the skin contact surface side over the entire length in the front-rear direction, and the outer part in the width direction of the side sheet, along the front-rear direction and at intervals in the width direction. Equipped with multiple elastic elastic members arranged,
Absorber convex portions protruding laterally are formed on both side portions of the absorber corresponding to the front end portion and the rear end portion of the elastic elastic member.
An absorbent article characterized in that, among the elastic stretchable members, at least both ends of the elastic stretchable member arranged on the innermost side in the width direction overlap with the convex portion of the absorber in the thickness direction. The absorbent article according to claim 1, wherein the length of the elastic elastic member overlapping the convex portion of the absorbent body is 5 mm or more. In the individually packaged state, the absorbent article is folded in the front-rear direction along the front fold line and the rear fold line along the width direction, respectively.
The absorbent article according to any one of claims 1 and 2, wherein the front fold line and the rear fold line are provided on the outer side in the front-rear direction from the portion where the elastic elastic member overlaps the convex portion of the absorber, respectively. The absorbent article according to any one of claims 1 to 3, wherein the superabsorbent convex portion does not contain a super absorbent polymer. The absorber is composed of a laminated body of a plurality of sheet-shaped absorbers.
The absorbent article according to any one of claims 1 to 4, wherein the absorbent body convex portion is formed on at least one of the laminated bodies. The absorbent article according to any one of claims 1 to 5, wherein the thickness of the convex portion of the absorber is gradually reduced toward the outside in the width direction. The absorbent article according to any one of claims 1 to 6, wherein the absorbent article is an incontinence pad.

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