JP2008006203A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article which prevents a body liquid from leaking forward, the sideways, rearward and diagonally rearward by highly improving the fittedness for the crotch section. <P>SOLUTION: For this absorbent article, an absorber 4 is inserted between a liquid-permeable top sheet 3 and a back sheet 2. The absorbent article has a structure that the absorber 4 has a first central higher section N1 for which the absorber thickness is formed to be thicker than the surroundings in a crotch section region including a body liquid discharging area R1. At the same time, the absorber 4 has a second central higher section N2 for which the absorber thickness is formed to be thicker than the first central higher section N1 at a perineum section corresponding section R2 which is higher than the first central higher section N1 and behind the body liquid discharging area R1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads and the like for absorbing menstrual blood and vaginal discharge, and more specifically, an absorbent body having a multi-stage structure for improving local fit. The present invention relates to an absorbent article provided.

  Conventionally, as absorbent articles such as sanitary napkins, panty liners, incontinence pads, liquid-impervious backsheets such as polyethylene sheets or polyethylene laminate sheets nonwoven fabrics, and liquid-permeable top sheets such as nonwoven fabrics or liquid-permeable plastic sheets There is known an intervening absorber made of cotton-like pulp or the like.

Numerous improvements have been made on this type of absorbent article, and various means for preventing leakage of body fluids have been taken. As one of these body fluid leakage prevention means, there is a technique in which leakage is prevented by changing the thickness of the absorbent body or absorbent article corresponding to the body part. For example, in Patent Document 1 below, the absorber thickness of the crotch region including the body fluid discharge site is the thickest, the absorber thickness of the front region located on the front side thereof is thinner than the absorber thickness of the crotch region, And the absorbent article which formed the absorber thickness of the back side area located in the back side of the said crotch part area | region thinner than the absorber thickness of the said front side area | region is disclosed. In the following Patent Document 2, a sanitary napkin having a liquid absorption layer for absorbing and holding liquid, and having a vagina facing portion and a rupture facing portion extending further rearward thereof, A sanitary napkin provided with a three-dimensional structure projecting from the skin side surface is disclosed.
JP 2003-180733 A JP 2005-334293 A

  Certainly, according to the absorbent article described in Patent Document 1, the front part of the crotch part is relatively flat while the crotch part has a hollow shape. In consideration of the above, the absorption body thickness in the crotch region including the body fluid discharge site is formed to be the thickest than the other regions, so that the fit with the female local area is improved, and it is excellent in that it can prevent the pre-leakage of body fluids in particular. ing. However, as shown in FIG. 5, the female body structure is not flat even in the crotch, and the perineum from the vaginal opening to the vicinity of the anus on the rear side has the largest depression. Therefore, in the absorbent article described in Patent Document 1, the fit property of the perineum portion is not sufficient, and there is a possibility that rear leakage may occur.

  In addition, the sanitary napkin described in Patent Document 2 is provided with a three-dimensional structure in consideration of the shape of the crack in order to prevent leakage after the crack. According to the above cited reference 2, it becomes possible to prevent a leak after passing through the rupture portion at bedtime or the like, but since the fit property at the perineum is not sufficient, the rupture from the bodily fluid discharge port to the rupture is possible. In the meantime, there is a feeling of discomfort that the body fluid travels through the body, and there is a risk that the body fluid staying in the perineum will leak sideways or obliquely backward.

  Therefore, the main problem of the present invention is to provide an absorbent article that improves the fit of the crotch part to a higher degree, prevents body fluid from leaking forward, sideways, rearward, and obliquely rearward at the time of going to bed, and that is easy to manufacture. There is to do.

As the present invention according to claim 1 for solving the above-mentioned problem, in an absorbent article in which an absorbent body is interposed between a liquid-permeable top sheet and a back sheet,
The absorbent body has a first middle-high portion in which a thickness of the absorbent body is formed thicker than the circumference in a crotch region including a body fluid discharge site, and is compatible with the perineal region on the first mid-high portion and behind the body fluid discharge site. There is provided an absorbent article characterized by having a second middle-high part formed with a thicker absorber than the first middle-high part.

  The present inventor has intensively studied for the development of an absorbent article that has improved the fit of the crotch part to a higher degree. As shown in FIG. The depression from the vicinity of the blood drainage port to the perineum is in the position where the body fluid discharge site is recessed from the surface of the body, and the perineum located behind the body fluid discharge site is the most recessed. . As a result, in the present invention described in claim 1, the crotch region including the body fluid discharge site is provided with the first middle-high portion in which the absorbent body is formed thicker than the surroundings, and on the first middle-high portion. By providing a second middle-high part formed thicker than the first middle-high part in the perineal part corresponding part behind the body fluid discharge site, the first middle-high part is located between the crotch part and the hip valley. Fit to the body over the part, and the second middle and high part can fit to the perineum from the vaginal opening to the vicinity of the anus on the back side, improving the fit of the crotch part more highly, and going to bed Sometimes it is possible to prevent body fluid from leaking forward, sideways, rearward, and rearwardly.

  As the present invention according to claim 2, the first middle and high parts and / or the second middle and high parts are provided with a pressing part to the absorbent body, separately laminated of an upper absorbent body and / or three-dimensional solid fiber of the absorbent body. The absorbent article according to claim 1, wherein the absorbent article is formed by artificial fiber.

  As for this invention which concerns on Claim 3, the said 1st middle high part and 2nd middle high part are the said body fluid discharge | emission site | part with respect to the lower layer absorber provided with the surface side bulging part in the range concerning a perineum part from a body fluid discharge | emission site | part. The absorbent article according to claim 1, wherein the absorbent article is formed by laminating an upper absorbent body after providing the compressed portion.

  According to a fourth aspect of the present invention, the first middle-high portion and the second middle-high portion are formed by laminating an upper-layer absorber having the second middle-high portion formed on an upper surface of a lower-layer absorber. An absorbent article according to Item 1 is provided.

  As a fifth aspect of the present invention, the first middle-high portion and the second middle-high portion are formed by laminating an upper-layer absorber on the upper surface of a lower-layer absorber having a surface-side bulged portion at a position corresponding to the perineum. An absorbent article according to claim 1 is provided.

  As this invention which concerns on Claim 6, the said 1st middle-high part and the 2nd middle-high part are formed by providing a pressing part with respect to the absorber which has equal thickness equivalent to a said 2nd middle-high part. An absorbent article according to claim 1 is provided.

  According to a seventh aspect of the present invention, the first middle-high portion and the second middle-high portion have a surface side bulged portion constituting the second middle-high portion, and the other portions correspond to the first middle-high portion. The absorbent article of Claim 1 currently formed by providing a pressing part to areas other than a 1st middle-high part formation part and a 2nd middle-high part with respect to the absorber of equal thickness.

  As for the present invention according to claim 8, the first middle high portion and the second middle high portion are a lower layer absorber, a middle layer absorber for forming the first middle high portion, and an upper layer absorber for forming the second middle high portion. The absorbent article according to claim 1, which is formed by laminating layers.

  As the present invention according to claim 9, there is provided the absorbent article according to claim 1, wherein the first middle high portion and the second middle high portion are formed by three-dimensionally stacking fibers.

  The invention according to claims 2 to 9 specifically shows the formation mode of the first middle and high part and the second middle and high part, and by adopting these forming means, the first middle and high part and The second middle / high portion can be easily formed.

  According to a tenth aspect of the present invention, the first middle-high portion is formed 4 to 11 mm thicker than the surrounding absorber, and the second middle-high portion is formed 2-10 mm thicker than the first middle-high absorber. An absorbent article according to any one of claims 1 to 9 is provided.

  The invention according to claim 10 is characterized in that the first middle-high portion absorber thickness is 4 to 11 mm thicker than the surrounding absorber, and the second middle-high portion absorber thickness is greater than that of the first middle-high portion absorber. Further, by forming 2 to 10 mm thick, the fit of the crotch part can be improved to a higher degree, and body fluid can be prevented from leaking forward, sideways, rearward and obliquely rearward at bedtime.

  As described above in detail, according to the present invention, the fit of the crotch part is improved to a higher degree, and the body fluid is prevented from leaking forward, sideways, rearward, and obliquely rearward at bedtime, and the absorbent article facilitates manufacture. Is provided.

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

[Basic structure of sanitary napkin 1]
1 is a development view of a sanitary napkin 1 according to a first embodiment of the present invention, FIG. 2 is a view taken along the line II-II in FIG. 1, and FIG. 3 is a view taken along the line III-III in FIG. 4 is a view taken along the line IV-IV in FIG.

The sanitary napkin 1 includes a liquid-impervious back sheet 2 made of a polyethylene sheet, a liquid-permeable top sheet 3 that allows permeation of menstrual blood, cages, and the like, and an intervening sheet between the sheets 2 and 3 Absorbent body 4 made of cotton-like pulp or synthetic pulp, etc., crepe paper 5 surrounding the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility, and substantially side edges of the absorbent body 4 And a pair of three-dimensional gathers BS, BS provided to protrude from the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge part, and the absorption In the periphery of the body 4, the outer edges of the liquid-impermeable back sheet 2 and the liquid-permeable top sheet 3 are joined at the upper and lower edges by an adhesive such as hot melt or an adhesive means such as heat seal. In addition, the liquid-impervious backsheet 2 extending laterally from the absorbent body 4 at both side edges and the side nonwoven fabric 7 forming the three-dimensional gather BS are adhesives such as hot melt. Wing-like flaps W, W that are joined by an adhesive means such as heat seal or the like and project laterally by the laminated sheet portion of the liquid-impermeable backsheet 2 and the side nonwoven fabric 7 are formed. the second wing-shaped flaps W _B to the portion located on the buttocks _side, W _B are formed.

Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impervious backsheet 2, a sheet material having at least water shielding properties such as polyethylene is used. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. One or a plurality of adhesive layers (not shown) are formed on the non-use side (outer surface) of the liquid-impermeable back sheet 2 so as to fix the sanitary napkin 1 to the underwear when worn on the body. It has become. As the liquid-impermeable back sheet 2, a polylaminated nonwoven fabric in which a plastic film and a nonwoven fabric are laminated may be used.

  Next, the liquid-permeable top sheet 3 is preferably a porous or non-porous nonwoven fabric or a porous plastic sheet. As the material fibers constituting the nonwoven fabric, in addition to olefins such as polyethylene or polypropylene, polyesters, polyamides, and other synthetic fibers, regenerated fibers such as rayon and cupra, and natural fibers such as cotton can be used. A nonwoven fabric obtained by an appropriate processing method such as a method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid permeable top sheet 3, menstrual blood, venom, etc. (hereinafter collectively referred to as body fluid) are quickly absorbed, and the dry touch property is excellent. It will be a thing.

  As schematically shown in FIG. 6, the absorbent body 4 has a first middle-high part N <b> 1 having a thicker absorbent body than the surroundings in the crotch region including the body fluid discharge site R <b> 1, and the first middle-high part. A structure having a second middle-high portion N2 formed on the perineum portion corresponding portion R2 on the N1 and behind the body fluid discharge portion R1 and having a thicker absorber than the first middle-high portion N1. The first middle-high portion N1 is an absorber region which is thickened on the use surface side in a region which is elongated in the napkin longitudinal direction at the center portion in the width direction and is partitioned by the emboss 8. The second middle-high portion N2 is on the region where the first middle-high portion N1 is formed, and the absorber is further thickened on the use surface side to the region R2 corresponding to the perineal portion behind the body fluid discharge site. Is a region formed. These middle and high portions N1 and N2 will be described in more detail later. As the embossing, in addition to the embossing 8 defining the first middle and high part N1, a substantially umbrella-shaped front end independent embossing 9 is formed with a space at the front end, and a space is formed at the rear side. Thus, a rear end independent emboss 11 having a substantially inverted umbrella shape is formed.

  The absorbent body 4 (upper layer absorbent body 4A) forming the first middle-high section N1 or the second middle-high section N2 includes at least pulp fibers and synthetic fibers, and the ratio of the pulp fibers: synthetic fibers in terms of weight. It is desirable to mix 80-80: 20-80, preferably 40-60: 60-40.

  The upper layer absorber 4A functionally absorbs bodily fluid quickly, but does not hold the absorbed bodily fluid inside, and forms an absorber 4 (lower layer absorber) that forms other than the first middle-high portion N1 and the second middle-high portion N2. It is necessary to satisfy both the first function to penetrate 4B) and the second function to quickly absorb the bodily fluid discharged on the upper surface of the liquid-permeable top sheet 3, so that the permeability of the first function is satisfied. If the synthetic fiber is mixed too much to improve the synthetic fiber, the synthetic fiber will not have water absorption or even if it has been subjected to a hydrophilic treatment, the water absorption will be low and the absorption rate of body fluid will be reduced. Become. In the case of a particularly large amount of menstrual blood, in order to prevent leakage after wearing the napkin for 1 hour, it is desirable that at least the liquid permeability of the upper absorbent body 4A is 85% or more and the absorption rate is 25 seconds or less. By setting the mixing ratio of the synthetic fiber and the pulp fiber to the above numerical value, the first function and the second function can be achieved in a balanced manner. Further, by mixing synthetic fiber at least with the upper layer absorbent body 4A, the bulk can be maintained and the cushioning property can be maintained without being deflated even when the body fluid is absorbed.

  As the synthetic fiber, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be a mixture. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. In the case of a hydrophobic fiber, it is desirable to use a synthetic fiber that has been surface-treated with a hydrophilizing agent so as to have an affinity for body fluids. The upper absorbent body 4A is preferably mixed with polyester fibers such as tow fibers (fiber bundles), polyethylene terephthalate, and polybutylene terephthalate in order to increase the bulk and improve fit to the body. Examples of the tow fiber include polysaccharides or derivatives thereof (cellulose, cellulose ester, chitin, chitosan, etc.), synthetic polymers (polyethylene, polypropylene, polyamide, polyester, polylactamamide, polyvinyl acetate, etc.). In particular, cellulose esters and cellulose are preferable.

  At least the upper layer absorbent body 4A can contain a superabsorbent resin. Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process of the highly water-absorbent resin having the water absorption performance, the water absorption force and the water absorption speed can be adjusted by adjusting the crosslinking density and the crosslinking density gradient. The blending amount is required to promote penetration of the upper absorbent body 4A into the lower absorbent body 4B, and so-called gel blocking phenomenon occurs when the blending amount is increased. Therefore, the blending amount is 1 in terms of weight with respect to the total weight of pulp fibers and synthetic fibers. It is desirable to blend at a ratio of -10%. In addition, when the high water-absorbing resin content exceeds 50%, the entanglement between the pulp fibers is lost, the sheet strength is lowered, and tearing, cracking, and the like are likely to occur.

  Examples of the pulp fiber include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and artificial cellulose fibers such as rayon and acetate. Softwood pulp having a longer fiber length than hardwood pulp functions and It is preferably used in terms of price.

  On the other hand, the upper layer absorbent body 4A does not have to contain a synthetic fiber, and can be a pulp fiber alone or a mixture of a pulp fiber and a superabsorbent resin. In the lower layer absorbent body 4B, permeability is not important, and it is desirable to retain the body fluid that has permeated from the upper layer absorbent body 4A so that the body fluid does not ooze out to the outside so that it does not contain synthetic fibers. Rather desirable. The content of the superabsorbent resin is desirably blended at a rate of 1 to 20% by weight with respect to the total weight of the fibers constituting the lower layer absorbent body 4B in order to absorb and retain body fluid.

In the illustrated example, the width dimension of the liquid-permeable top sheet 3 is slightly longer than the width of the absorbent body 4 so as to cover the absorbent body 4 as shown in the cross-sectional views of FIGS. The three-dimensional gathered BS stops depending on the purpose such as preventing the side non-woven fabric 7 different from the liquid-permeable top sheet 3 from penetrating, specifically, menstrual blood, or the like or penetrating the skin. The nonwoven fabric material is subjected to appropriate water repellent treatment or hydrophilic treatment. The side nonwoven fabric 7 can be made of natural fiber, synthetic fiber, regenerated fiber or the like and formed by an appropriate processing method, but preferably eliminates the feeling of gore and prevents stuffiness. For this reason, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 15 to 23 g / m ² , and silicon-based, paraffin-based, alkylchromic chloride-based water repellents, etc. to reliably prevent the permeation of body fluids. A water repellent nonwoven fabric coated with is preferably used.

As shown in FIGS. 2 and 3, the side nonwoven fabric 7 has an outer portion from the intermediate portion in the width direction from the inner position of the absorbent body 4 to slightly beyond the absorbent side edge to the outer edge of the liquid-impermeable backsheet 2. A pair of left and right wings are bonded to the absorbent body side portion substantially corresponding to the body fluid discharge portion by the laminated sheet portion of the side nonwoven fabric 7 and the liquid-impervious back sheet 2. flaps W, to form a W, a second wing-shaped flaps W _B now to the buttocks side _position, to form a W _B. These wing-shaped flaps W, W and second wing-shaped flaps W _B, W outer surface respectively the adhesive layer on the side 12 of the _B ..., 13 ... comprises a, as shown in FIG. 12, when worn against shorts 30, wherein The wing-shaped flaps W, W are folded back to the opposite side at the position of the folding line RL, and are wound around the crotch portion of the shorts and fastened.

  While the inner side part of the said side nonwoven fabric 7 is folded back substantially double, the thread-like elastic elastic member 21 by which the appropriate position of the both ends or the longitudinal direction was fixed to the intermediate part of the height direction inside this double sheet | seat In addition, a plurality of, in the illustrated example, two thread-like elastic elastic members 22, 22 are arranged on the upper part of the thread-like elastic elastic member 21 in a state where both ends or appropriate positions in the longitudinal direction are fixed. Has been. As shown in FIG. 3, the double sheet portion is bonded to the absorbent body 4 side in a state of being folded and laminated in a Z-shaped cross section so that the portion where the thread-like elastic elastic member 21 is disposed is arranged. As the bending points, three-dimensional gathers BS and BS standing on the surface side are formed while forming pockets P and P having openings inward in a cross-sectional shape.

[Structure of mid-high section]
As shown in FIG. 6, the sanitary napkin 1 improves the fit to the crotch part to a higher degree and prevents body fluid from leaking forward, sideways, rearward, and obliquely rearward at bedtime. A first middle-high portion N1 and a second middle-high portion N2 are formed on the upper surface of the base layer absorber N.

  In order to improve the fit to the body from the crotch portion to the valley portion of the hip, the first middle-high portion N1 is formed at least on the longitudinal center line of the sanitary napkin 1 from the crotch portion including the body fluid discharge site R1 to the hip. It is an area that bulges in a step-like manner across the valley. The thickness of the absorber of the first middle-high portion N1 is preferably 4 to 11 mm, preferably 5 to 8 mm thicker (+ h1) than the surface of the base layer absorber N serving as the absorber base material. When the thickness of the absorber is less than 4 mm, the adhesion (fitness) to the female local area cannot be obtained, and when it exceeds 11 mm, the feeling of wearing is excessively felt and the wearability is deteriorated. Moreover, it is desirable that the first middle-high portion N1 is formed over a range of 20 to 100 mm in the front direction and 100 to 200 mm in the rear direction of the sanitary napkin 1 with the center of the body fluid discharge site R1 as a base point. . That is, the length of the first middle-high portion N1 is desirably in the range of 120 to 300 mm in accordance with the length of the general female local part and the valley portion of the hip. When the body fluid discharge site R1 generally has wing flaps W, W as in this embodiment, the wing flap W is determined as a corresponding location of the W position, and the napkin does not have the wing flaps W, W. Is defined as the approximate center position of the leg cut when a curved leg cut that curves inwardly is formed at the center of the napkin or both side edges.

  On the other hand, the second middle-high portion N2 is at least on the longitudinal center line of the sanitary napkin 1 and improves the first middle-high portion in order to improve the fit to the perineum R2 from the vaginal opening to the vicinity of the anus on the rear side. This is a stepped bulge formed at a position corresponding to the perineum R2 on N1. The thickness of the absorber of the second middle and high portion N2 may be a thickness (+ h2) increased by 2 to 10 mm, preferably 5 to 8 mm, from the surface of the first middle and high portion N1. When the thickness of the absorber is less than 2 mm, the adhesion (fitness) to the perineum R2 cannot be obtained, and when it exceeds 10 mm, the adhesion of the first middle-high part N1 to the body deteriorates. In addition, the second middle-high portion N2 is formed over a range of ± 5 to ± 30 mm in the front-rear direction centering on a point 30 to 40 mm in the rearward direction of the sanitary napkin 1 from the center of the body fluid discharge site. desirable.

[Means for forming middle and high parts]
Next, means for forming the first middle-high portion N1 and the second middle-high portion N2 will be described with reference to FIGS. 7 to 11 are schematically shown, and the corner portion of the absorber actually has a predetermined curved shape.

  FIG. 7 shows a middle / high portion forming aspect according to the first embodiment. In this embodiment, the upper layer absorbent body 15B is laminated after the pressing portion is provided to the portion corresponding to the body fluid discharge site of the lower layer absorbent body 15A. Specifically, as shown in FIG. 5A, first, the vertically long bulging portion 40 is formed as the lower layer absorber 15A from the front end of the first middle-high portion N1 to the vicinity of the rear end of the second middle-high portion N2. The squeezed portion is applied to the front portion (hatch portion Na in the figure) and crushed to a predetermined height, and the bulging portion Nb is formed in the rear portion. (Figure (B)). Thereafter, as shown in FIG. 6C, the upper absorbent body 15B is laminated on the lower absorbent body 15A, thereby forming the first middle-high part N1 and the second middle-high part N2, corresponding to the body fluid discharge site R1. By applying a pressing part to the lower layer absorbent body 15A to increase the density of the lower layer from that of the upper layer, the body fluid can easily move from the upper layer to the lower layer, improving the absorption speed and absorbing. This has the effect of improving the diffusibility of the body fluid.

  FIG. 8 shows a middle-high portion forming aspect according to the second embodiment. In the embodiment shown in FIG. 8 (A), the first middle-high portion N1 and the first middle-high portion N1 are formed by laminating the upper-layer absorber 16B having the second middle-high portion N2 formed on the upper surface of the substantially uniform lower-layer absorber 16A. 2 middle and high portions N2. In the embodiment shown in FIG. 8B, the bulging portion 41 is provided in advance in the lower layer absorber 16A corresponding to the second middle and high portion N2, and the upper layer absorber 16B is laminated on the upper surface of the first middle and high portion. A portion N1 and a second middle-high portion N2 are formed. As described above, the first middle-high portion N1 and the second middle-high portion N2 can be easily formed by stacking the upper-layer absorber 16B or the lower-layer absorber 16A formed in advance in two stages.

  FIG. 9 shows a middle-high portion forming aspect according to the third embodiment. In the embodiment shown in FIG. 9 (A), the first middle-high portion N1 and the second middle-high portion N2 are provided by applying a compressed portion to the absorber 17 having a thickness corresponding to the second middle-high portion N2. Formed. Specifically, as shown in FIG. 5A, the flat absorber 17 having a thickness of the second middle-high portion N2 (absorbing body having a dotted line shape in the figure) excludes the second middle-high portion N2. The first middle-high portion N1 is provided with a squeezing portion up to the formation height of the first middle-high portion N1, and is further squeezed to the formation height of the base layer absorbent body at portions other than the first middle-high portion N1 and the second middle-high portion N2. Part. As a result, a slightly dense absorber region is formed in the first middle-high portion N1 excluding the second middle-high portion N2, and a denser absorber region is formed in the other portions.

  In addition, the embodiment shown in FIG. 9B has a surface side bulging portion that constitutes the second middle-high portion N2, and the other portion absorbs the same thickness corresponding to the first middle-high portion N1. The said 1st middle high part N1 and the 2nd middle high part N2 are formed by providing a pressing part to areas other than the 1st middle high part N1 and 2nd middle high part N2 formation part with respect to the body 18. FIG. Specifically, as shown in FIG. 5B, only the second middle-high portion N2 bulges, and the other portion of the absorber 18 has a height corresponding to the first middle-high portion N1 (see FIG. A compression part is provided to the formation height of a base layer absorber to parts other than the 1st middle high part N1 and the 2nd middle high part N2 to a middle dotted line-shaped absorber. As a result, the absorbent bodies of the first middle-high portion N1 and the second middle-high portion N2 are formed flexibly, so that the adhesion to the body is improved and the body fluid can be absorbed efficiently.

  FIG. 10 shows a middle-high portion forming aspect according to the fourth embodiment. In this embodiment, the lower layer absorber 19A, the middle layer absorber 19B for forming the first middle-high portion N1, and the upper layer absorber 19C for forming the second middle-high portion N2 are independently manufactured. Each layer is laminated. The absorbers of the respective layers may have the same density, but it is preferable that the absorbers have a higher density as the lower layer. Thereby, the absorption performance of the body fluid is improved.

  FIG. 11 shows a middle-high portion forming aspect according to the fifth embodiment. In this embodiment, the first middle and high parts N1 and the second middle and high parts N2 are three-dimensionally piled so that the absorbent body is piled. As a result, the middle and high portions N1 and N2 are firmly joined.

  In the sanitary napkin 1, the first middle high portion N1 and the second middle high portion N2 are formed as described above, and the emboss 8 is provided around the first middle high portion N1 as shown in FIG. Is desirable. Thereby, even in a state where body pressure is applied, the fit can be improved without shifting the first middle-high portion N1. Moreover, embossing can also be provided around the second middle and high portion N2.

It is an expanded view of the sanitary napkin 1 of this invention. It is the cross-sectional view (II-II line arrow view of FIG. 1). It is the cross-sectional view (III-III arrow directional view of FIG. 1). It is the cross-sectional view (IV-IV arrow directional view of FIG. 1). It shows the hollow shape of the female local area. It is a schematic diagram which shows the longitudinal cross-sectional shape of the absorber which concerns on this invention. (A)-(C) are the middle-high part formation means which concerns on a 1st form example. (A)-(B) are the middle-high part formation means which concerns on a 2nd form example. (A)-(B) are the middle-high part forming means according to the third embodiment. It is the middle-high part formation means which concerns on a 4th form example. It is the middle-high part formation means which concerns on a 5th example. It is a perspective view which shows the mounting state of the napkin 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 4A ... Upper layer absorber, 4B ... Lower layer absorber, 5 ... Crepe paper, 7 ... Side nonwoven fabric, 8 ... Embossing, 9 ... Front end independent embossing, 10 ... Second rear side embossing, 11 ... Rear end independent embossing, BS ... Solid gather, N1 ... First middle / high part, N2 ... Second middle / high part, W ... Wing-shaped flap , W _B ... buttocks side wing-shaped flap

Claims (10)

In an absorbent article in which an absorber is interposed between a liquid-permeable top sheet and a back sheet,
The absorbent body has a first middle-high portion in which a thickness of the absorbent body is formed thicker than the circumference in a crotch region including a body fluid discharge site, and is compatible with the perineal region on the first mid-high portion and behind the body fluid discharge site. An absorbent article having a second middle and high portion formed thicker in the portion than the first middle and high portion.   The first middle / high part and / or the second middle / high part is formed by applying a compressed part to the absorber, separately laminating an upper layer absorber and / or three-dimensionally stacking raw fibers of the absorber. Item 10. An absorbent article according to Item 1.   The first middle-high portion and the second middle-high portion absorb the upper layer after providing the squeezed portion to the body fluid discharge site with respect to the lower layer absorbent body provided with the surface side bulge portion in the range from the body fluid discharge site to the perineum. The absorbent article of Claim 1 formed by laminating | stacking a body.   2. The absorbent article according to claim 1, wherein the first middle-high portion and the second middle-high portion are formed by laminating an upper-layer absorber having the second middle-high portion formed on an upper surface of a lower-layer absorber.   The absorptivity according to claim 1, wherein the first middle-high portion and the second middle-high portion are formed by laminating an upper-layer absorber on the upper surface of a lower-layer absorber having a surface-side bulged portion at a position corresponding to the perineum. Goods.   2. The absorbent article according to claim 1, wherein the first middle-high portion and the second middle-high portion are formed by providing a compressed portion to an absorbent body having an equal thickness corresponding to the second middle-high portion.   The first middle-high portion and the second middle-high portion have a surface side bulging portion that constitutes the second middle-high portion, and the other portions have an equivalent thickness corresponding to the first middle-high portion, The absorptive article according to claim 1 formed by giving a pressing part to fields other than the 1st middle high part formation part and the 2nd middle high part part.   The first middle high portion and the second middle high portion are formed by laminating a lower layer absorber, a middle layer absorber for forming the first middle high portion, and an upper layer absorber for forming the second middle high portion. The absorbent article according to claim 1.   The absorbent article according to claim 1, wherein the first middle high portion and the second middle high portion are formed by three-dimensionally stacking fibers. The said 1st middle high part is formed 4-11 mm thicker than the surrounding absorber, and the said 2nd middle high part is formed 2-10 mm thicker than the 1st middle high part absorber. Absorbent article as described in 1.

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