WO2015072502A1

WO2015072502A1 - Absorbent article

Info

Publication number: WO2015072502A1
Application number: PCT/JP2014/080048
Authority: WO
Inventors: 黒田　賢一郎
Original assignee: ユニ・チャーム株式会社
Priority date: 2013-11-14
Filing date: 2014-11-13
Publication date: 2015-05-21

Abstract

The absorbent article (1) is provided with compression grooves (50) in which a surface sheet (10) and an absorbent (30) that extend in the longitudinal direction (L) are compressed in the thickness direction (T). Said compression grooves (50) have a pair of first longitudinal compression grooves (51) and a pair of second longitudinal compression grooves (52) disposed on the outside of the first longitudinal compression grooves (51) in the width direction (W). The absorbent (30) interposed between the pair of second longitudinal compression grooves (52) has at least one constricted section (55) wherein the interval between the pair of second longitudinal compression grooves (52) narrows in the width direction (W). In either the first longitudinal compression grooves (51) or the second longitudinal compression grooves (52), high compression sections (56) and low compression sections (57) are alternately disposed in the longitudinal direction (L) and the other of the first longitudinal compression grooves (51) and the second longitudinal compression grooves (52) is configured from a high compression section (56) alone.

Description

Absorbent articles

The present invention relates to absorbent articles such as sanitary napkins.

DESCRIPTION OF RELATED ART Conventionally, the absorbent article which can improve a wearer's wearing feeling is provided (for example, patent document 1). In the absorbent article described in Patent Document 1, the arc shape of the pair of flexible shafts is one, and the distance between the pair of flexible shafts is the shortest at the central portion in the longitudinal direction. However, in the absorbent article described in Patent Document 1, when the mounting position of the absorbent article deviates in the longitudinal direction, a portion where the distance between the pair of flexible axes becomes short is not arranged corresponding to the vicinity of the excrement opening, There is a problem that the fit does not improve.

Also, in recent developing countries and emerging countries where absorbent articles are widely used, the wearing time in the daytime of the wearer is long in the wearer, so the number of times being caught by the legs increases when walking etc. It is compressed inside. When the absorbent article is repeatedly compressed inward in the width direction, the width of the absorber is further shortened, and the absorber may not be disposed at a position facing the excretory port, or the absorber may be cured.

Then, in view of the above-mentioned point, absorption which improves durability of an absorptive article and enables improvement of a fit and a feeling of wearing, securing an absorptive function, even when it is a case where it is used for a long time in the daytime An article has been proposed (Patent Document 2). In this absorbent article, compressed grooves are formed in which the surface sheet and the absorbent body are continuously compressed in the thickness direction, that is, the same thickness. The squeeze groove includes a pair of inner squeeze grooves, and a pair of outer squeeze grooves that are not parallel to the inner squeeze grooves and are disposed on both sides in the width direction from the inner squeeze grooves. And an absorbent article is located in a wearer's crotch by being comprised so that the absorber pinched | interposed into a pair of outer side pressing groove may have several constrictions, an absorber is pinched between legs and the absorber is width direction outside. The force to compress inward in the width direction is dispersed to reduce deviation and to improve the fit.

Japanese Patent Application Laid-Open No. 10-99372 JP 2013-215388 A

Since the outer pressing groove and the inner pressing groove included in the absorbent article described in Patent Document 2 are continuously compressed, the body fluid such as menstrual blood etc. of the wearer in contact with the pressing groove is easily diffused. ing.

In addition, the distance between the outer compression groove and the inner compression groove in the width direction is shorter as the portion is narrowed, and the surface sheet is strongly pressed against the absorber in the portion which is narrowed, and the density of the absorber is It's getting higher. That is, since the body fluid of the wearer is likely to be collected at the narrowed portion, there is a problem that the body fluid may be diffused across the squeezing groove and the body fluid may leak to the outside of the product.

Therefore, the present invention has been made in view of the above problems, and it is possible to improve the fit while preventing absorption even while securing the absorbent performance even when the absorbent article is used for a long time. The purpose of the present invention is to provide an absorbent article capable of

In order to solve the problems described above, in the absorbent article according to the embodiment of the present invention, the absorbent article 1 comprises a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, the above-mentioned top sheet, and the above-mentioned back sheet An absorbent article having an absorbent body 30 provided therebetween, and having a longitudinal direction L of the product and a width direction W of the product orthogonal to the longitudinal direction, the surface sheet extending in the longitudinal direction and the absorbent The body includes a compressed groove 50 compressed in the thickness direction T of the product, and the compressed groove includes a pair of first compressed grooves (first longitudinal compressed groove 51), and the first compressed groove and the non-cut in the longitudinal direction. A pair of second squeezing grooves (second longitudinal squeezing grooves 52) disposed parallel to each other on both sides in the width direction of the product than the first squeezing groove, and in the pair of second squeezing grooves In the absorber to be sandwiched, the distance between the pair of second compression grooves is the width The first pressing groove and the second pressing groove have at least one constriction portion 55 narrowed toward one side, and one of the first pressing groove and the second pressing groove has a high pressing portion 56 and a low pressing portion 57 in the longitudinal direction. The first squeezing groove and the second squeezing groove are configured to be alternately arranged, and the other of the first squeezing groove and the second squeezing groove is configured by only the high-pressure squeezing portion.

An absorbent article 1 according to another aspect of the present embodiment includes a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, and an absorber 30 provided between the top sheet and the back sheet, An absorbent article having a longitudinal direction L of a product and a width direction W of the product orthogonal to the longitudinal direction, wherein the surface sheet extending in the longitudinal direction and the absorber are compressed in a thickness direction T of the product A pressing groove is provided, and the pressing groove is not parallel to the pair of first pressing grooves (first longitudinal pressing groove 51), the first pressing groove and the longitudinal direction, and the pressing grooves are more than the first pressing grooves. The product has a pair of second pressing grooves (second longitudinal pressing grooves 52) disposed on both sides in the width direction of the product, and the first pressing grooves and the second pressing grooves respectively extend along the longitudinal direction. The high-pressure pressing

parts

56a, 56b and the low-pressure pressing parts 57a, 5 alternately arranged b, and the low-pressure squeezing portion 57a included in the first squeezing groove and the high-pressure squeezing portion 56b included in the second squeezing groove are disposed adjacent to each other in the width direction. .

It is the top view seen from the skin contacting surface side of the absorptive article in a 1st embodiment. It is a schematic cross section of the AA cross section and the BB cross section which are shown in FIG. It is the top view to which the pressing groove of the absorbent article shown in FIG. 1 was expanded. It is the top view seen from the skin contacting surface side of the absorptive article in the 1st modification in a 1st embodiment. It is the top view seen from the skin contacting surface side of the absorptive article in the 2nd modification in a 1st embodiment. It is the top view seen from the skin contacting surface side of the absorptive article in a 2nd embodiment. FIG. 7 is a schematic cross-sectional view of an AA cross section and a BB cross section shown in FIG. 6; It is the top view to which the pressing groove of the absorbent article shown in FIG. 6 was expanded. It is the top view to which the pressing groove of the absorbent article in the 1st modification in a 2nd embodiment was expanded. It is the top view to which the pressing groove of the absorbent article in the 2nd modification in a 2nd embodiment was expanded. It is the top view to which the pressing groove of the absorbent article in the 3rd modification in a 2nd embodiment was expanded.

An absorbent article according to an embodiment of the present invention (hereinafter referred to as an embodiment) will be described with reference to the drawings. The absorbent article 1 in the embodiment of the present invention is, for example, a sanitary napkin.

First Embodiment
An absorbent article 1 according to a first embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a plan view of the absorbent article 1 in the first embodiment. FIG. 2 is a sectional view taken along the line AA (FIG. 2 (a)) and a sectional view taken along the line BB (FIG. 2 (b)) shown in FIG. FIG. 3 is an enlarged view of the pressing groove 50 in the plan view shown in FIG.

In the following description, the absorbent article 1 in the first embodiment of the present invention is a daytime sanitary napkin. Therefore, in the absorbent article 1 shown in FIG. 1, the lengths of the front area FA located on the front side of the wearer in the longitudinal direction L and the rear area BA located on the rear side of the wearer are substantially the same. In addition, the area | region between a pair of wing parts mentioned later is center area | region CA including the area | region which a wearer's excretion opening contact | abuts. The front side of the central area CA is the front area FA, and the rear side of the central area CA is the rear area BA.

In the first embodiment of the present invention, the sanitary napkin for day is described as an example, but the absorbent article according to the first embodiment of the present invention is a sanitary napkin for night It can also be applied. In the sanitary napkin for night, the rear area BA located on the rear side of the wearer is longer than the front area FA located on the front side of the wearer in the longitudinal direction L.

The absorbent article 1 has a top sheet 10 in contact with the wearer's skin, a liquid-impermeable back sheet 20 which does not transmit liquid, and an absorber 30. The absorber 30 is disposed between the top sheet 10 and the back sheet 20. Absorber 30 is shown in dashed lines in FIGS. 1 and 2. The absorbent body 30 is disposed at a central portion in the longitudinal direction L and the width direction W of the absorbent article 1.

The absorbent article 1 is provided with

wing portions

43 and 44 provided on the outer side of the absorber 30 in the width direction W orthogonal to the longitudinal direction L in plan view shown in FIG. Furthermore, the absorbent article 1 includes

side sheets

41 and 42 provided on the outer side of the absorber 30 in the width direction W.

The surface sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The surface sheet 10 covers at least the surface of the absorber 30. The top sheet 10 is not particularly limited as long as it is a sheet-like material having a liquid-permeable structure, such as non-woven fabric, woven fabric, perforated plastic sheet, mesh sheet, and the like. As materials for woven and non-woven fabrics, either natural fibers or chemical fibers can be used.

Examples of natural fibers include cellulose such as ground pulp and cotton. Examples of the chemical fiber include regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fiber, or thermoplastic hydrophobic chemical fiber subjected to a hydrophilization treatment.

Examples of the thermoplastic hydrophobic chemical fibers include single fibers such as polyethylene (PE), polypropylene (PP) and polyethylene terephthalate (PET), fibers obtained by graft polymerization of PE and PP, and composite fibers such as core-sheath structure. Can be mentioned as

In particular, in the case of non-woven fabric, web forming may be performed by any one or a combination of a dry method (card method, spun bond method, melt blown method, air laid method, etc.) or wet method. In addition, as a method of bonding, methods such as thermal bonding, needle punch, chemical bonding and the like can be mentioned, but it is not particularly limited to these methods. Moreover, you may use the spunlace formed in the sheet form by the water flow confounding method.

As the perforated plastic sheet, a perforated sheet of thermoplastic resin such as PE, PP, PET, a porous foam material, etc. can be used. With regard to these, it is also preferable to use a mixture of a filler made of titanium oxide, calcium carbonate or the like in the range of 0.5 to 10%, as necessary, to make it white turbid. Moreover, you may use the perforated film which opened the film which consists of said thermoplastic resin by perforation, heat embossing, machining, etc. The perforated film may be used as a composite sheet with a non-woven fabric.

The back sheet 20 has a length substantially the same as the length of the top sheet 10. The back sheet 20 may be a polyethylene sheet, a laminated nonwoven fabric mainly made of polypropylene or the like, a breathable resin film, a sheet in which a breathable resin film is bonded to a nonwoven fabric such as spunbond or spunlace. The back sheet 20 is preferably made of a material having a flexibility that does not cause discomfort when worn, for example, a film obtained from a range of 15 to 30 g / m ² of a low density polyethylene (LDPE) resin as a main component Can be used. The back sheet 20 is desirably liquid-impervious and moisture-permeable, and can be formed, for example, of a microporous sheet obtained by melt-kneading an inorganic filler such as polyethylene or polypropylene with an inorganic filler, .

Absorbent body 30 contains hydrophilic fiber and pulp. The absorber 30 is formed of a material that can absorb body fluid such as menstrual blood. Examples include ground pulp, cellulose such as cotton, regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, particulate polymer, fibrous polymer, thermoplastic hydrophobic chemical fiber, and hydrophilization treatment Thermoplastic hydrophobic chemical fibers or chemically bonded air-laid pulp can be used alone or in combination.

The method of forming these materials into an absorbent is not particularly limited, and for example, those formed into sheets by an air laid method, a melt blown method, a spun lace method, a paper making method, etc. are used. Moreover, a cellulose foam, a continuous foam of synthetic resin, etc. can also be used as an absorber. Furthermore, it is also possible to use a foam or a material obtained by crushing the sheeted material and then formed into an absorbent. Among these, pulp is mixed in the range of 50 to 100%, particulate polymer is mixed in the range of 20 to 0%, coated with a tissue, and then sheeted by embossing 100 to 2000 g / m ² , 1 to 50 mm And absorbers having a bulk of The embossing is to prevent the shape of the absorber from being deformed, and the embossing area ratio is in the range of 10 to 100%, preferably in the range of 30 to 50%.

The absorbent body 30 may be formed by laminating hydrophilic fibers or powders by an air laid method, or may be an air laid sheet formed by molding hydrophilic fibers or powders into a sheet by an air laid method, or a tissue (for example, Pulverized pulp mixed with a superabsorbent polymer may be placed on a basis weight of 15 g / m ² ) and formed by wrapping in a tissue.

The thickness of the absorber 30 is preferably 0.3 to 5.0 mm. By thickening the thickness of the absorber 30, the cushioning properties of the absorber 30 can be enhanced. However, if the thickness of the absorber 30 is too thick, it may be difficult to maintain the shape of the entire absorber 30 in the thickness direction by the compressed grooves 50. Therefore, as for the thickness of an absorber, 5.0 mm or less is desirable. In addition, the thickness of the absorber 30 said here is a thickness in the state (state shown in FIG. 1) extended to the state in which the wrinkles of the surface sheet 10 which comprises the absorbent article 1, the back surface sheet 20 grade | etc., Are not formed.

Furthermore, other examples of the thin absorbent material include an absorbent sheet and a polymer sheet. The absorbent sheet and the polymer sheet can be used without particular limitation as long as they are generally used for absorbent articles such as sanitary napkins.

Examples of the absorbent sheet include absorbent paper and non-woven fabrics, and pulp sheets obtained by sheeting fibers with a binder and the like, and examples of the polymer sheet include sheets obtained by mixing pulverized pulp and fibers with a particulate polymer to form sheets. Can be mentioned. In addition, as a sheet | seat which mixed the particulate polymer with the fiber and was formed in the sheet form, both the thing in which the particulate polymer is disperse | distributed in layered form, and the thing disperse | distributed in three dimensions can be used.

Fibers used for the material and polymer sheet forming the absorbent sheet include cellulose fibers such as wood pulp, regenerated cellulose fibers such as rayon and cupra, hydrophilic synthetic fibers such as polyvinyl alcohol fibers and polyacrylonitrile fibers, surfactants, etc. Of polyethylene, polypropylene, polyethylene terephthalate, polyethylene / polypropylene composite fiber or polyethylene / polyethylene terephthalate composite fiber, in which the fiber surface is hydrophilized, are preferred, and cellulose fiber is more preferred in terms of maintaining good hydrophilicity.

The particulate polymer used in the polymer sheet is preferably one which can absorb and hold a liquid 20 times or more its own weight and can gelate, and examples thereof include starch, crosslinked carboxymethylated cellulose, polyacrylic acid and Examples thereof include salts thereof and polyacrylate graft polymers.

The absorber 30 in the present embodiment is configured by wrapping a pulp obtained by laminating cotton-like pulp, synthetic pulp or the like to a basis weight of about 100 to 300 g / m ² with a protective paper (not shown). The protective paper is for maintaining the shape of pulp, and for example, crepe paper or tissue paper can be used.

The absorber 30 has a shape extending in the front-rear direction, and is smaller than the back sheet 20 by approximately one turn. The length in the width direction W of the absorber 30 corresponds to the crotch interval of an adult woman, and is approximately 30 to 80 mm. Absorbent body 30 is adhered to back sheet 20 by an adhesive such as hot melt.

The

side sheets

41 and 42 are disposed on both sides of the top sheet 10. The

side sheets

41 and 42 can be selected from the same material as the top sheet 10. However, in order to prevent the menstrual blood from flowing over the

side sheets

41 and 42 and flowing outward of the absorbent article 1, it is preferable to have hydrophobicity or water repellency. The

side sheets

41, 42 cover a part of the side edge of the absorber 30 and the

wing portions

43, 44.

In the absorbent article 1, the peripheries of the top sheet 10, the back sheet 20, the

side sheets

41 and 42, and the back sheet 20 are joined, and the absorber 30 is enclosed. As a method of joining the top sheet 10 and the back sheet 20, it is possible to combine one or more of heat embossing, ultrasonic waves and hot melt adhesives.

In the back sheet 20, an adhesive (not shown) is applied to the surface in contact with the undergarment in a plurality of regions. The adhesive is intermittently disposed along the longitudinal direction L on the back surface side of the absorber. The adhesive is also provided on the surfaces of the

wings

43 and 44 in contact with the undergarment. In the state before use, the adhesive is in contact with a release sheet (not shown). The release sheet prevents the pressure sensitive adhesive from deteriorating before use. And a peeling sheet peels by the wearer at the time of use.

In addition, in the absorbent article which does not have a peeling sheet, you may be comprised so that it may prevent that an adhesive degrades before use by the packaging sheet which packages an absorbent article separately. When the adhesive and the package sheet are in contact with each other, the surface of the package sheet is preferably subjected to a treatment that allows the adhesive to be released without reducing the adhesive strength of the adhesive.

The absorbent article 1 has a pressing groove 50 formed by compressing the topsheet 10 and the absorber 30 in the thickness direction. The compressed groove 50 is a groove formed by processing the skin contact side of the surface sheet 10 of the absorbent article 1 and the non-skin contact side (garment contact surface side) of the absorber 30. It is.

The pressing groove 50 is provided around the central area CA including the center of the area in contact with the excretion opening of the wearer in the area where the absorbent body 30 is disposed.

In addition, with the center of the area | region which a excretion opening contact | abuts, it corresponds with the center of the longitudinal direction L of the center area | region CA which the wearer's excretion opening abuts, and the width direction W. For example, in an absorbent article having a wing, the center of the wing in the longitudinal direction L is the center of the central region in the longitudinal direction L. Moreover, in the absorbent article which does not have a wing part, the position where the length dimension of the width direction W of the absorber is the shortest is the center of the longitudinal direction L of the central region. In addition, the area | region which a excretion opening contact | abuts is contained in the area | region which contact | abuts a crotch of a wearer, and is located between the legs of a wearer.

The shape of the squeeze groove 50 is, for example, a circular or oval shape in which a certain area is surrounded by a curve, a polygon or a circle which encloses a certain area in a plurality of broken lines, or a straight line extending along the longitudinal direction L or the width direction W It is a curve.

The pressing groove 50 includes a first longitudinal pressing groove 51, a second longitudinal pressing groove 52, a first width pressing groove 53, and a second width pressing groove 54.

First, the shapes of the first longitudinal compression groove 51, the second longitudinal compression groove 52, the first width compression groove 53, and the second width compression groove 54 in plan view will be described.

The first longitudinal squeezing groove 51 and the second longitudinal squeezing groove 52 are squeezing grooves 50 extending in the longitudinal direction L, respectively, and the first longitudinal squeezing groove 51 and the second longitudinal squeezing groove 52 are not parallel to each other. is there.

The first longitudinal compression grooves 51 include a central area CA in the longitudinal direction L, and are arranged in a pair at intervals in the width direction W. The first longitudinal compression groove 51 may be provided with a curved portion having a convex shape directed inward in the width direction, or may be in the shape of a straight line orthogonal to the width direction W. The front end 51FE and the rear end 51BE of the first longitudinally compressed groove 51 are on the inner side in the central area CA in the longitudinal direction, for example, at the ends in the longitudinal direction L of the

wings

43 and 44 in the width direction W Provided so as to face each other.

In the case where the first longitudinal compressed groove 51 is provided with a curved portion, for example, the curved portion extends inward in the width direction from the both ends of the first longitudinal compressed groove 51 in the longitudinal direction L toward the longitudinal center. It is a shape. However, the shape of the curved portion of the first longitudinal pressing groove 51 may not be an arc shape.

The first width squeezing grooves 53 are provided to connect the first longitudinal squeezing grooves 51 between the pair of first longitudinal squeezing grooves 51. Specifically, the first width compression groove 53 is disposed so as to connect the front end portions 51FE of the pair of first longitudinal compression grooves 51, and the rear end portions 51BE of the pair of first longitudinal compression grooves 51 are The 1st width pressing groove 53 is arrange | positioned so that it may connect. The first longitudinal pressing groove 51 and the first width pressing groove 53 are disposed continuously, and are annular in plan view.

The central area CA is an area surrounded by the first longitudinal pressing groove 51 and the first width pressing groove 53.

The second longitudinal squeezing grooves 52 are disposed on both sides in the width direction of the first longitudinal squeezing groove 51 and extend in the longitudinal direction L. The second longitudinal pressing grooves 52 are arranged in a pair at intervals in the width direction W. The longitudinal ends of the second longitudinal pressing groove 52 are located in the front area FA and the rear area BA of the absorbent article, respectively. The longitudinal end of the second longitudinal pressing groove 52 is, for example, the inside in the longitudinal direction of the central area CA, and is opposed to the end 51FE, 51FB of the first longitudinal pressing groove 51 in the width direction W It may be a position to

The second longitudinal pressing groove 52 has a continuous linear shape in which at least one or more places are partially adjacent to the first longitudinal pressing groove 51 inside in the width direction. That is, the absorber 30 sandwiched by the pair of second longitudinal pressing grooves 52 has at least one or more constricted portions 55 in which the distance between the pair of second longitudinal pressing grooves is narrowed in the width direction W. In FIG. 1, an example is shown in which the second longitudinal compression grooves 52 are in close proximity to the first longitudinal compression grooves 51 in the width direction at three locations. That is, in the example of FIG. 1, three constricted portions 55 are provided.

Further, in the example of FIG. 1, one portion of the constricted portion 55 is provided on the center line CACL along the width direction W, passing through the center of the center area CA in the longitudinal direction. The absorbent article according to the first embodiment of the present invention is a napkin for day use, and since the length in the longitudinal direction L of the front region is the same as the length in the longitudinal direction L of the rear region The longitudinal center is the longitudinal center of the absorbent body and the longitudinal center of the absorbent article 1.

The second width squeezing groove 54 is provided to connect the pair of second longitudinal squeezing grooves 52 between the pair of second longitudinal squeezing grooves 52. Specifically, second width squeezing groove 54 is arranged to connect the front ends of the pair of second longitudinal squeezing grooves 52 in front side area FA of the absorbent article, and in back side area BA of the absorbent article A second width squeezing groove 54 is disposed to connect the rear end portions of the pair of second longitudinal squeezing grooves 52. The second longitudinal squeezing groove 52 and the second width squeezing groove 54 are disposed continuously, and are annular in plan view. The second longitudinal pressing groove 52 and the second width pressing groove 54 are disposed so as to surround the first longitudinal pressing groove 51 and the first width pressing groove 53.

The first longitudinal compression groove 51 and the second longitudinal compression groove 52 may be formed to be inclined with respect to a straight line along the longitudinal direction L, and a straight line along the longitudinal direction L, and the first longitudinal compression groove The angle (the acute angle side) formed by the 51 or the second longitudinal pressing groove 52 is 45 degrees or less. On the other hand, the first width compression groove 53 and the second width compression groove 54 may be formed to be inclined with respect to the straight line along the width direction W, and the straight line along the width direction W and the first width The angle (sharp side) formed by the pressing groove 53 or the second width pressing groove 54 is less than 45 degrees.

In addition, the longitudinal squeezing groove and the width squeezing groove may be connected as in the present embodiment, or may be spaced apart. Specifically, the first width squeezing groove 53 may be spaced apart from the first longitudinal squeezing groove 51 and may be disposed longitudinally outside the first longitudinal squeezing groove 51, or the first longitudinal squeezing groove 51. And may be disposed on the inner side in the width direction than the first longitudinal pressing groove 51. The second width squeezing groove 54 may be spaced apart from the second longitudinal squeezing groove 52 and may be disposed longitudinally outside the second longitudinal squeezing groove 52, or may be spaced apart from the second longitudinal squeezing groove 52. It may be arranged inside the second longitudinal pressing groove 52 in the width direction.

Next, the shapes of the first longitudinally compressed groove 51, the second longitudinally compressed groove 52, the first width compressed groove 53, and the second width compressed groove 54 in the thickness direction T of the absorbent article 1 will be described.

The first longitudinal pressing groove 51 has a high pressing portion 56 and a low pressing portion 57. FIG. 2A is a schematic cross-sectional view of the AA cross section of FIG. 1, and the AA cross section is a cross section at the central line CACL. As shown in FIGS. 1 and 2A, the pressing portion of the first longitudinal pressing groove 51 on the AA cross section is a low pressing portion 57. On the other hand, FIG. 2 (b) is a schematic cross-sectional view of the BB cross section of FIG. 1, and as shown in FIGS. 1 and 2 (b), the squeezing of the first longitudinal pressing groove 51 on the BB cross section. The part is a low pressure part 57.

The high pressing part 56 is a region compressed by a force higher than that of the low pressing part 57, and is, for example, a collection of point-like pressing parts. A plurality of point-like pressing parts included in the high-pressure pressing part 56 are arranged side by side at intervals, and are configured to form a certain area as a whole.

Moreover, as shown in FIG. 3, when the 1st longitudinal pressing groove 51 has the high pressing part 56 and the low pressing part 57, the length L1 of the longitudinal direction inner side of the width direction of the high pressing part 56 is a width direction outer side. Longer than the longitudinal direction L2. That is, the high-pressure pressing portion 56 has a convex shape on the outer side in the width direction. Thus, the distance D1 between the end in the longitudinal direction L1 of the high pressing part 56 and the second longitudinal pressing groove 52 in the width direction W is the distance between the end in the longitudinal direction L2 and the second longitudinal pressing groove W It can be made longer than D2, and the pressure in the width direction of the absorber 30 by the surface sheet 10 can be reduced.

The low compression part 57 is a region compressed by a lower force than the high compression part 56. In the first embodiment of the present invention, as shown in FIG. 1 and FIG. 3, the high pressing portions 56 and the low pressing portions 57 provided in the first longitudinal pressing groove 51 have predetermined lengths along the longitudinal direction L. They are alternately arranged at intervals of L3. In addition, the low pressing part 57 includes not only the area | region compressed by low force but the area | region which is not compressed.

Since the pressing groove 50 has a high density, it has a structure in which the body fluid of the wearer tends to be concentrated as compared with the portion which is not compressed or compressed by a weak force. However, as in the first embodiment, the first longitudinal squeezing groove 51 positioned inside in the width direction is provided with the high-pressure pressing part 56 and the low-pressure pressing part 57 having different densities, so that It is possible to reduce the concentration of inflow of body fluid.

Further, as shown in FIG. 1 and FIG. 3, when the constricted part 55 is provided on the center line CACL, the squeezed part in the first longitudinal compressed groove 51 opposed in the width direction to the constricted part 55 on the center line CACL is It is desirable that it is a low pressure squeezed portion 57. The body fluid of the wearer is first discharged to the central portion of the absorber 30, and then reaches the first longitudinal pressing groove 51, and a predetermined amount of body fluid remains. When the body fluid further increases, the body fluid flows from the first longitudinal compression groove 51 in the direction of the width direction outward, and is directed to the second longitudinal compression groove 52. Therefore, the low-pressure squeezed portion 57 having a lower density is provided on the inner side in the width direction of the constricted portion 55 where the body fluid tends to concentrate, so that the concentration of the body fluid flowing from the first squeeze groove 51 to the width direction outer It can be reduced.

The high compression parts 56 and the low compression parts 57 may be formed to include an area compressed with a high force and an area compressed with a low force in the respective areas, or the whole may be compressed by the same force. It may be formed. Further, the high-pressure squeezed portion 56 and the low-pressure squeezed portion 57 may be compressed from the top sheet 10 side toward the back sheet 20 side, or even from the back sheet 20 side toward the top sheet 10 side. A pressed portion compressed from the top sheet 10 side toward the back sheet 20 and a pressed portion compressed from the back sheet 20 side toward the top sheet 10 may be formed.

The second longitudinal pressing groove 52 has a high pressing portion 56. The high compression parts 56 in the second longitudinal compression grooves 52 are regions compressed by substantially the same force as the high compression parts 56 in the first longitudinal compression grooves 51, and are, for example, a collection of point compression parts. A plurality of point-like pressing parts included in the high-pressure pressing part 56 are arranged side by side at intervals, and are configured to form a constant line as a whole.

The first width squeezing groove 53 is configured such that the high-pressure squeezed portion 56 in the first longitudinal squeezing groove 51 continuously forms an arc-shaped line.

The second width squeezing groove 54 is configured such that the high-pressure squeezed portion 56 in the second longitudinal squeezing groove 52 continuously forms an arc-shaped line.

Dimensions in the thickness direction T of the pressing groove 50 (in the embodiment where the pressing portion is formed on both the skin contact surface side and the garment contact surface side, the dimensions from the skin contact surface side and the garment contact surface of the absorber The total depth with the dimension from the side) is preferably 0.1 mm or more and 20 mm or less, but may be shallower than the thickness of the absorbent article. The depth of the groove on the skin contact surface side may be 20 to 50% of the thickness of the absorbent article, but it is 30 to 60 in consideration of the fluidity of the liquid and the deformability from the groove as the folding start point. % Is preferred.

Moreover, the thickness of the high pressing parts 56 and the low pressing parts 57 on the garment contact surface side of the absorber may be 5 to 20% of the thickness of the absorbent article, and the average depth of the low pressing parts 57 is It may be smaller than the high-pressure pressing part 56. When the depth of the pressing portion on the garment contact surface side is smaller than 5%, the deformability and flexibility of the pressing portion deteriorate. If it exceeds 20%, the pressing part itself becomes too deep and becomes fragile.

Specifically, in the absorbent article having a thickness of 7 mm, the pressing portion on the garment contact surface side is 4 mm, the low pressing portion 57 on the garment surface is 0.2 mm, and the pressing portion 56 is It is preferable that the point-like pressing part contained is 0.8 mm.

The shape of the point-like pressing part included in the high-pressure pressing part 56 on the garment contact surface side may be dot-like, grid-like, oval-like, etc. However, when the point-like pressing parts are alternately arranged, the grid-like The groove is easy to process. The size of the pressing part is preferably 0.5 mm ² to 100 mm ² , and the pitch of the pressing part is preferably 0.5 mm to 3 mm.

Specifically, the shape of the point-like pressing part included in the high-pressure pressing part 56 is a rhombus 0.64 mm ² , and the pressing part surrounding the point-like pressing part included in the high-pressure pressing part 56 has a grid shape In this case, it is 1.92 mm ² , and the point-like pressing part is repeated at 0.8 mm pitch.

The processing method of the pressing groove 50 is, for example, the following method. It passes between the embossing rolls facing each other in the vertical direction, and is pressed in the vertical direction by the embossing rolls to form a squeezed portion. In the contact surface of the upper emboss roll with the skin contact surface side of the absorbent article, a substantially elliptical groove with a continuous depth of one step is disposed. A groove having a step depth is disposed on the contact surface of the lower emboss roll with the garment contact surface side of the absorbent article.

In addition, the processing method of the pressing groove 50 is not limited to this, and the upper and lower sides of the roll are reversed, the pattern shape of the depth of two steps is changed, and the temperature which is embossing conditions and the distance between the rolls are appropriately adjusted. It is also good.

As described above, in the absorbent article 1 according to the first embodiment of the present invention, the one or more constricted portions 55 and the first longitudinal pressing groove 51 include the high pressing portion 56 and the low pressing portion 57, and the second The longitudinal squeeze groove 52 comprises only the high pressure squeezed portion 56.

As the absorbent article 1 according to the first embodiment of the present invention includes a plurality of (three places) constricted portions 55, the force applied to the constricted portions 55 is dispersed and the stress is propagated, thereby suppressing the stress concentration. it can. Therefore, the durability of the absorbent article is improved, and even when the absorbent article 1 is used for a long time, the curing of the absorber is suppressed, or the width of only the area in contact with the excretion opening is shortened. Can be suppressed. In addition, since the plurality of narrowed portions 55 are respectively shifted in the longitudinal direction, even when the absorbent article 1 is displaced to the front side or the rear side, the stress is dispersed in the narrowed portions 55 and the widthwise inner side The absorber 30 can be compressed. Therefore, the fit and wearing feeling of the absorbent article 1 of a wearer can be improved.

Moreover, since the high pressing parts 56 and the low pressing parts 57 provided in the first longitudinal pressing groove 51 are alternately arranged in the longitudinal direction, the small thickness (high density) region and large thickness of the absorber 30 (density And lower regions) are alternately arranged. Thereby, the diffusion of the body fluid in the direction of the constricted portion 55 in the pressing groove 50 is suppressed, and the product exterior of the body fluid is reduced, as compared with the case where the pressing portion is constituted only by the pressing portion continuously compressed with the same level of force. Leaks can be prevented.

Moreover, according to the absorbent article 1 of the first embodiment of the present invention, the shape of the necked portion 55 can be stably maintained by preventing the situation where the body fluid is likely to leak from the vicinity of the necked portion 55 in advance. . That is, it is easy to maintain the shape in which the absorbent body 30 is compressed between the outer side in the width direction from the outer side in the width direction while being held between the legs of the wearer, and maintain a shape free from leakage for a long time it can.

First Modified Example of First Embodiment
Next, an absorbent article 1A according to a first modification of the first embodiment will be described.

FIG. 4A is a plan view of an absorbent article 1A according to a first modification of the first embodiment. FIG. 4 (b) is an enlarged view of the pressing groove 50.

Absorbent article 1A of the 1st modification in a 1st embodiment has a plurality of constriction parts 55, the 1st longitudinal pressing slot 51 is provided only with high-pressure pressing part 56, and the 2nd longitudinal pressing slot 52 is high. A pressing unit 56 and a low pressing unit 57 are provided. The high pressing parts 56 and the low pressing parts 57 provided in the second longitudinal pressing groove 52 are alternately arranged in the longitudinal direction. The other configuration included in the absorbent article 1A of the first modification in the first embodiment may be the same as the configuration included in the absorbent article 1 of the first embodiment.

Moreover, as shown to FIG. 4B, when the 2nd longitudinal pressing groove 52 has the high pressing part 56 and the low pressing part 57, the length of the longitudinal direction width direction outer side of the high pressing part 56 is width Longer than the inner longitudinal length. That is, the high-pressure pressing portion 56 has a convex shape inward in the width direction. Thus, the distance D1 between the end in the longitudinal direction L1 of the high pressing part 56 and the low pressing part 52 in the width direction W is longer than the distance D2 between the end in the longitudinal direction L2 and the low pressing part 52 in the width direction W It is possible to reduce the pressure inward in the width direction of the absorber 30 by the topsheet 10. That is, concentration of body fluid on the constricted portion 55 can be suppressed.

Second Modified Example of First Embodiment
Next, an absorbent article 1B according to a second modification of the first embodiment will be described.

Fig.5 (a) is a top view of the absorbent article 1B in the 2nd modification in 1st Embodiment. FIG. 5 (b) is an enlarged view of the pressing groove 50.

The absorbent article 1B in the second modified example of the first embodiment has a plurality of constricted portions 55 similarly to the absorbent article 1 of the first embodiment, and the first longitudinal pressing groove 51 is a high pressing portion 56 and the pressing part 57, and the second longitudinal pressing groove 52 comprises only the pressing part 56. The high pressing parts 56 and the low pressing parts 57 provided in the first longitudinal pressing groove 51 are alternately arranged in the longitudinal direction. The other configuration included in the absorbent article 1A of the second modified example in the first embodiment may be the same as the configuration included in the absorbent article 1 of the first embodiment.

A plurality of narrow portions 55 in the second modification of the first embodiment are arranged, and one of them is provided on the center line CACL as in the first embodiment. And the pressing part of the 1st pressing groove 51 which opposes the narrow part 55 on the central line CACL in the width direction W is the low pressing part 57. As shown in FIG.

Furthermore, in the second modified example of the first embodiment, the length W2 in the width direction of the low pressing portion 57 connecting the high pressing portions 56 provided in the first longitudinal pressing groove 51 is the width direction of the high pressing portion 56. Shorter than the length W1. Therefore, the density of the absorber 30 in contact with the low compression parts 57 and the low compression parts 57 in the first longitudinal compression groove 51 on the outer side in the width direction can be reduced, so diffusion of body fluid in the constriction part 55 can be suppressed.

Since one of the end portions in the longitudinal direction L of the plurality of second curved portions passes through the center in the longitudinal direction L of the central region and is disposed on the central line CACL along the width direction W, the wearer can The center position of the area where the discharge port abuts can be grasped, and it becomes a standard at the time of wearing. Therefore, the wearer can easily arrange the absorbent article at the correct position, and the displacement of the wearing position can be prevented. By appropriately arranging the absorbent article, the designed absorption performance can be exhibited.

The hardness of the absorbent article or the like can be measured, for example, using the Gurley method defined in JIS-1096. Moreover, the fabric weight and density of an absorber can be measured by the following measuring methods, for example. In the absorbent article wrapped by the package, the package is opened, and the folded absorbent article is developed to measure the thickness and area of the portion for measuring the fabric weight and density. Subsequently, the part which measures a fabric weight and a density is cut out from an absorbent article, and the weight of the cut out part is measured. Subsequently, parts other than an absorber, such as a top sheet and a back sheet, are removed from the cut out part, and the weight of an absorber is measured. The basis weight is calculated based on the weight of the absorber and the area of the portion where the basis weight and density are to be measured. The density is calculated based on the basis weight and thickness.

The thickness can be measured by the following measurement method. Specifically, the absorbent article of the sample is impregnated with liquid nitrogen and frozen, then cut with a razor and returned to normal temperature, and then 50 times using an electron microscope (for example, Keyence VE 7500) Measure by magnification. Here, the reason for freezing the absorbent article of the sample is to prevent thickness variation due to compression at the time of cutting.

Next, a part of the method of manufacturing the absorbent article 1 according to the embodiment will be described. In addition, the existing method can be used about the method which is not demonstrated. The manufacturing method of an absorbent article performs a surface sheet production process as a 1st step.

Next, a top sheet bonding step is performed as a second step. Specifically, the topsheet 10 and the sidesheets 41 and 42 are bonded, for example, by heat welding.

As the third step, an absorbent body molding process is performed. Specifically, the pulp to be the material of the absorbent is molded by a molding drum to mold the absorbent 30. In addition, the order of the manufacturing process of the surface sheet 10 of a 1st step and a 2nd step, and the absorber formation process of a 3rd step may be reverse order.

In the fourth step, a bonding process is performed. Specifically, a bonding step of bonding the absorber molded in the third step and the top sheet 10 and the

side sheets

41 and 42 bonded in the second step is performed.

In the fifth step, a squeezing step is performed. Specifically, the absorber 30 and the surface sheet 10 are compressed in the thickness direction to form the pressing groove 50.

In the sixth step, a back sheet bonding step is performed. Specifically, the back sheet 20 is joined to the absorbent body and the top sheet 10 or the like in which the pressing portion is formed. After bonding the back sheet 20, a step of applying an adhesive is provided. The absorbent article in the present embodiment can be manufactured by the above steps.

Second Embodiment
Next, the absorbent article in the second embodiment will be described focusing on differences from the absorbent article in the first embodiment.

As shown in FIG.6 and FIG.8, the 1st longitudinal pressing groove 51 has the high pressing part 56a and the low pressing part 57a. The high pressing portions 56 a and the low pressing portions 57 a are alternately arranged along the longitudinal direction L in the first longitudinal pressing groove 51. FIG. 7A is a schematic cross-sectional view of the CC cross section of FIG. 6, and the CC cross section is a cross section at the center line CACL. As shown in FIGS. 6 and 7A, the pressing groove of the first longitudinal pressing groove 51 on the CC cross section is a low pressing portion 57a. 7B is a schematic cross-sectional view of the DD cross section of FIG. 6, and as shown in FIG. 6 and FIG. 7B, the squeezing of the first longitudinal pressing groove 51 on the DD cross section is carried out. The ditch is a high-pressure pressing part 56a.

The high pressing part 56a is a region where the density of the absorber 30 is higher than that of the low pressing part 57a, which is compressed by a stronger force than the low pressing part 57a. On the other hand, the low pressure squeezed portion 57a is a region in which the density of the absorber 30 is lower than that of the high pressure squeezed portion 56a, which is compressed with a weaker force than the high pressure squeezed portion 56a. The high pressing part 56a and the low pressing part 57a are, for example, a collection of point-like pressing parts. A plurality of dotted pressing parts are arranged side by side at intervals, and are configured to form a constant area as a whole. In addition, the low pressing part 57a may be an area | region without the point-like pressing part which is not compressed or substantially compressed. In order to effectively suppress the diffusion of the body fluid of the wearer inside the first longitudinal pressing groove 51, it is preferable that the difference in density between the high pressing part 56a and the low pressing part 57a be large.

As shown in FIG.6 and FIG.8, the 2nd longitudinal pressing groove 52 has the high pressing part 56b and the low pressing part 57b. The high compression parts 56 b and the low compression parts 57 b are alternately arranged along the longitudinal direction L in the second longitudinal compression groove 52. As shown in FIGS. 6 and 7A, the pressing groove of the second longitudinal pressing groove 52 on the CC cross section is the high pressing portion 56b. On the other hand, as shown in FIG. 6 and FIG. 7B, the pressing groove of the second longitudinal pressing groove 52 on the DD cross section is the low pressing portion 57b. The second longitudinal pressing groove 52 is curved and extends in the longitudinal direction.

The high-pressure squeezed portion 56 b is a region in which the density of the absorber 30 is higher than that of the low-pressure squeezed portion 57 b, which is compressed by a stronger force than the low-squeezed portion 57 b. On the other hand, the low pressure squeezed portion 57b is a region in which the density of the absorber 30 is lower than that of the high pressure squeezed portion 56b, which is compressed with a weaker force than the high pressure squeezed portion 56b. The high pressing part 56 b and the low pressing part 57 b are, for example, a collection of point-like pressing parts. A plurality of dotted pressing parts are arranged side by side at intervals, and are configured to form a constant area as a whole. In addition, the low pressing part 57a may be an area | region without the point-like pressing part which is not compressed or substantially compressed. In order to effectively suppress the diffusion of the body fluid of the wearer in the second longitudinal pressing groove 52, it is preferable that the difference in density between the high pressing portion 56b and the low pressing portion 57b be large.

Next, they are disposed in the longitudinal direction L of the high pressing portions 56a and the low pressing portions 57a included in the first longitudinal pressing groove 51, and the high pressing portions 56b and the low pressing portions 57b included in the second longitudinal pressing groove 52. The position will be described.

The low compression part 57a included in the first longitudinal compression groove 51 and the high compression part 56b included in the second longitudinal compression groove 52 are disposed to face each other in the width direction W line. That is, on the width direction W line, the low pressure squeezed portion 57a included in the first longitudinal squeezing groove 51 and the high pressure squeezed portion 56b included in the second longitudinal squeezing groove 52 are adjacent to each other. The portion 56 a is disposed along the longitudinal direction so as to be adjacent to the low pressing portion 57 b included in the second longitudinal pressing groove 52.

The body fluid of the wearer is preferentially accumulated in the portion of the absorbent body 30 which is more strongly compressed and denser. Therefore, after the body fluid of the wearer is first discharged to the central portion of the absorbent article 1, it reaches the first longitudinal squeezing groove 51 located inside in the width direction of the absorbent article 1, and the predetermined amount of body fluid remains. . When the body fluid further increases, the body fluid flows from the low pressure squeezed portion 57 a in the first longitudinal squeezing groove 51 in the direction of the width direction outer side of the absorbent article 1 and reaches the second longitudinal squeezing groove 52. At this time, the absorbent article 1 according to the second embodiment is disposed such that the low pressing parts 57 a in the first longitudinal pressing groove 51 and the high pressing parts 56 b in the second longitudinal pressing groove 52 are adjacent in the width direction W. Be done. Thereby, as compared with the case where the low compression parts 57a in the first longitudinal compression grooves 51 and the low compression parts 57a in the second longitudinal compression grooves 52 are arranged to be adjacent in the width direction W, the body fluid is not diffused. Body fluid can be drawn into the second longitudinal pressing groove 52 more smoothly.

Furthermore, even when the body fluid reaches the second longitudinal pressing groove 52, the high pressing portions 56b and the low pressing portions 57b are alternately arranged along the longitudinal direction L. The body fluid is difficult to diffuse along the That is, the body fluid flowing from the first longitudinal pressing groove 51 into the high pressing portion 56b of the second longitudinal pressing groove 52 permeates in the high pressing portion 56b, and the density of the absorber 30 is relatively low toward the low pressing portion 57b. It is hard to spread. Therefore, peeling of the surface sheet 10 and the absorber 30 caused by the expansion of the permeation part of the absorber 30 along the longitudinal direction L of the second longitudinal pressing groove 52 can be prevented.

Moreover, as shown in FIG. 7, thickness T1 in the high pressing part 56b contained in the 2nd longitudinal pressing groove 52 is thinner than thickness T3 in the low pressing part 57b. Thereby, even when the body fluid reaches the second longitudinal pressing groove 52 from the inside in the width direction, the thickness of the low-pressure pressing portion 57b is thicker than the thickness of the high-pressure pressing portion 56b into which the body fluid flows. It is difficult to diffuse from the part 56b to the low pressure part 57b. Therefore, peeling of the surface sheet 10 and the absorber 30 caused by the expansion of the permeation part of the absorber 30 along the longitudinal direction L of the second longitudinal pressing groove 52 can be prevented.

For example, the depth of the pressing groove 50 in the absorbent article having a thickness of 7 mm is 0.8 mm in the high pressing portion 56a of the first longitudinal pressing groove 51 and 0.2 mm in the low pressing portion 57a. It is preferable that the high pressing part 56a in the above is 0.8 mm and the low pressing part 57b is 0.2 to 0.5 mm.

As described above, the pressing groove 50 provided in the absorbent article in the second embodiment includes the pair of first longitudinal pressing grooves 51 and the first longitudinal pressing in the width direction W of the product orthogonal to the longitudinal direction L. The groove 51 has a pair of second longitudinal compression grooves 52 located outside the groove 51, and the first longitudinal compression grooves 51 and the second longitudinal compression grooves 52 are alternately arranged along the longitudinal direction. The low-pressure squeezing portion 57a including the high-pressure squeezing portions 56a and 58 and the low-pressure squeezing portions 57a and 59, and the high-pressure squeezing portion 56b included in the first longitudinal squeezing groove They are disposed adjacent to each other in the width direction W.

Thereby, even if the body fluid of the wearer flows from the first longitudinal compression groove 51 outward in the width direction and reaches the second longitudinal compression groove 52, the diffusion in the second longitudinal compression groove 52 is prevented. it can. Therefore, peeling of the surface sheet 10 and the absorber 30 due to diffusion inside the second longitudinal pressing groove 52 can be prevented, and leakage of body fluid to the outside can be prevented.

Next, a first modification of the second embodiment of the second embodiment will be described with reference to FIG.

FIG. 9 is an enlarged plan view of the pressing groove 50 of the absorbent article 1 in the first modified example of the second embodiment. The other configuration included in the absorbent article 1 in the first modification in the second embodiment may be the same as the configuration included in the absorbent article 1 in the second embodiment.

As shown in FIG. 9, in the absorbent article 1 according to the first modified example of the second embodiment, the low compression parts 57 b included in the second longitudinal compression grooves 52 are the low compression parts in the first longitudinal compression grooves 51. It exists on the extension line which extended the edge | side S which 57a and the high pressing part 56a contact width direction outer side. Specifically, as shown in FIG. 9, the shape of the low pressure squeezed portion 57a of the first longitudinal squeezing groove 51 is an arrow U1 indicating an extended line obtained by extending the side S of the first longitudinal squeezing groove 51 outward in the width direction. The second longitudinal compression groove 52 is configured to point to the low compression portion 57 b.

Thereby, when the body fluid of the wearer flows outward in the width direction from the low pressure squeezed portion 57 a in the first longitudinal squeezing groove 51, the bodily fluid flows along the side S of the first longitudinal squeezing groove 51 along the second longitudinal squeezing groove It flows toward 52 low pressure parts 57b.

Therefore, since no body fluid flows in the high pressing portion 56b which is a portion where the pressing force between the surface sheet 10 and the absorber 30 is high in the second longitudinal pressing groove 52, a decrease in the pressing force in the high pressing portion 56b can be suppressed. As a result, peeling between the surface sheet 10 and the absorber 30 can be made less likely to occur.

Next, a second modification of the second embodiment will be described with reference to FIG.

FIG. 10: is the top view to which the pressing groove 50 of the absorbent article 1 in the 2nd modification in 2nd Embodiment was expanded. The other configuration included in the absorbent article 1 in the second modified example of the second embodiment may be the same as the configuration included in the absorbent article 1 of the second embodiment.

As shown in FIG. 10, in the absorbent article 1 of the second modified example in the second embodiment, the high-pressure pressing part 56a included in the first longitudinal pressing groove 51 has a convex shape outward in the width direction. . Specifically, as shown in FIG. 10, the longitudinal direction length L4 of the high-pressure pressing part 56a in the absorbent article 1 of the second modified example of the second embodiment is the width of the high-pressure pressing part 56a. It is configured to be longer than the longitudinal length L5 on the outer side in the width direction and to include L5 in the longitudinal direction L.

As a result, the body fluid of the wearer flows from the inside in the width direction to the outside in the width direction along the convex shape outward in the width direction of the high pressing portion 56a. That is, the body fluid flows in the direction of arrow U2 shown in FIG. And since the high compression parts 56a included in the first longitudinal compression grooves 51 and the low compression parts 57b included in the second longitudinal compression grooves 52 are arranged adjacent to each other in the width direction, the body fluid is an arrow It flows toward U pressing part 57b included in the second longitudinal pressing groove 52 along U2.

Therefore, according to the absorbent article 1 of the second modification in the second embodiment, in the second high-pressure squeezing groove 52, the high-pressure squeezed portion 56b is a portion where the pressure bonding force between the surface sheet 10 and the absorber 30 is high. It is possible to make it difficult for fluid to flow. As a result, since the pressure-bonding force in the high-pressure squeezed portion 56 b does not decrease, the surface sheet 10 and the absorber 40 can be hardly peeled off.

Next, a third modification of the second embodiment of the second embodiment will be described with reference to FIG.

FIG. 11: is the top view to which the pressing groove 50 of the absorbent article 1 in the 3rd modification in 2nd Embodiment was expanded. The other configuration included in the absorbent article 1 in the third modified example of the second embodiment may be the same as the configuration included in the absorbent article 1 of the second embodiment.

As shown in FIG. 11, the widthwise length W1 of the second longitudinal pressing groove 52 is longer than the longest widthwise length W2 of the first longitudinal pressing groove 51. For example, the widthwise length W7 of the second longitudinal pressing groove 52 is 3 mm, and the widthwise length W4 of the first longitudinal pressing groove 51 is 2 mm.

Absorbent article 1 leaks the body fluid of the wearer more easily in the width direction than in the longitudinal direction. Therefore, as described above, by making the width direction length W1 longer than W2, in the width direction W relative to the longitudinal direction L, the absorbent body 1 of the wearer's bodily fluid in the second longitudinal pressing groove 52 of the absorbent article 1 The effect of suppressing diffusion can be increased. Specifically, even when the body fluid reaches the second longitudinal compressed groove 52, the area in which the topsheet 10 and the absorber 30 are crimped is increased, and the inflow of the body fluid into the second longitudinal compressed groove 52 You can increase the amount possible. Therefore, it can be set as the structure which peeling of the surface sheet 10 and the absorber 30 does not produce easily.

As described above, although the contents of the present invention have been disclosed through the embodiments of the present invention, it should not be understood that the descriptions and the drawings that form a part of this disclosure limit the present invention. Various alternative embodiments, examples and operation techniques will be apparent to those skilled in the art from this disclosure.

For example, the pressing groove may have at least a first longitudinal pressing groove and a second longitudinal pressing groove, and may not have the first width pressing groove and / or the second width pressing groove.

In addition, the absorbent article is not limited to the sanitary napkin, and may be an absorbent pad or a panty liner. Also, for example, the absorbent article may have a gather formed at the widthwise outer end of the absorbent.

The entire contents of Japanese Patent Application No. 2013-236310 (filed on November 14, 2013) and Japanese Patent Application No. 2013-236289 (filed on November 14, 2013) are hereby incorporated by reference. It is built in.

Even when the absorbent article is used for a long time, it is possible to provide an absorbent article capable of improving fit and preventing leakage while securing the absorption performance.

CA ... central area FA ... front area BA ... back area L ... longitudinal direction T ... thickness direction W ... width direction 1 ... absorbent article 10 ... surface sheet 20 ... back sheet 30 ...

absorber

41, 42 ...

side sheet

43, 44 wing portion 50 pressing groove 51 first longitudinal pressing groove 52 second longitudinal pressing groove 53 first width pressing groove 54 second width pressing groove 55 constricted portion 56 high pressing portion 57 low pressing portion

Claims

A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet, wherein the longitudinal direction of the product and the width direction of the product orthogonal to the longitudinal direction An absorbent article having
The longitudinally extending surface sheet and the absorber are provided with compressed grooves compressed in the thickness direction of the product,
The squeezing grooves are non-parallel to the pair of first squeezing grooves and the first squeezing groove in the longitudinal direction, and the pair of first squeezing grooves are disposed on both sides in the width direction of the product than the first squeezing grooves. With 2 squeeze grooves,
The absorber sandwiched between the pair of second compressed grooves has at least one or more constricted portions in which the distance between the pair of second compressed grooves is narrowed in the width direction,
Any one of the first squeezing groove and the second squeezing groove is configured such that the high pressing portion and the low pressing portion are alternately arranged in the longitudinal direction, and the first pressing groove and the second pressing groove An absorbent article comprising any one or the other of the squeezing grooves consisting only of the high-pressure squeezing portion.
When the said 1st pressing groove has the said high pressing part and the said low pressing part, the said high pressing part has a convex-shaped shape in the said width direction outer side.
When the said 2nd pressing groove has the said high pressing part and the said low pressing part, the said high pressing part has a shape of convex shape inside the said width direction.
The absorbent article according to any one of claims 1 to 3, wherein the length in the width direction of the low compression part is shorter than the length in the width direction of the high compression part.
When one of the one or more constricted portions is located at the longitudinal center and the first squeezing groove includes the high-pressure squeezing portion and the low-squeezing portion, the longitudinal direction center in the first squeezing groove is The absorbent article according to any one of claims 1 to 4, wherein the compressed part is disposed.
A liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet, wherein the longitudinal direction of the product and the width direction of the product orthogonal to the longitudinal direction An absorbent article having
The longitudinally extending surface sheet and the absorber are provided with compressed grooves compressed in the thickness direction of the product,
The squeezing grooves are non-parallel to the pair of first squeezing grooves and the first squeezing groove in the longitudinal direction, and the pair of first squeezing grooves are disposed on both sides in the width direction of the product than the first squeezing grooves. With 2 squeeze grooves,
The first squeezing groove and the second squeezing groove each have a high pressing portion and a low pressing portion alternately arranged along the longitudinal direction,
The absorbent article arrange | positioned so that the low pressing part contained in a said 1st pressing groove and the high pressing part contained in a said 2nd pressing groove may be adjacent in the said width direction.
The absorbent article according to claim 6, wherein a thickness of the second pressing groove included in the high pressing portion is thinner than a thickness of the high pressing portion included in the first pressing groove.
The absorbent article according to claim 6, wherein a thickness of the high pressing portion contained in the second pressing groove is thinner than a thickness of the low pressing portion contained in the second pressing groove.
The absorbent article according to any one of claims 6 to 8, wherein the second compressed groove is curved and extends in the longitudinal direction.
10. The low-pressure squeezing portion included in the second squeezing groove is on an extension line in which the side where the low-pressure squeezing portion and the high-pressure squeezing portion in the first squeezing groove contact is extended outward in the width direction. An absorbent article according to any one of the preceding claims.
The absorbent article according to any one of claims 6 to 10, wherein the high pressing parts included in the first pressing groove have a convex shape on the outer side in the width direction.
The absorbent article according to any one of claims 6 to 11, wherein the widthwise length of the second compressed groove is longer than the widthwise length of the first compressed groove.