JP2006068551A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article which makes an absorber of a sheet-like body composed of a water-absorbing resin dispersed and mixed into an absorbent fiber thin to adequate thickness dimensions, has softness and cushion property, can assure a good feeling for fitting, is hard to get wrinkled, has comparatively high stiffness in an outlet corresponding sector, and is hard to be twisted. <P>SOLUTION: The absorbent article 1 has a liquid permeable top sheet 9, a non-liquid permeable back sheet 3, and an absorber 5 which intervenes between the sheets. The absorber 5 is a sheet-like body where a highly water-absorbing resin is dispersed and mixed into the absorbent fiber. A corrugated portion 11 is provided in a sector except for an outlet corresponding sector 15 which corresponds to the outlet of menstrual blood, urine, or the like. The corrugated portion 11 is soft, and at the same time, a certain degree of stiffness is given to the outlet corresponding sector 15. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an absorbent article such as a sanitary napkin, a panty liner, an incontinence pad, and a paper diaper. It is about.

In recent years, in absorbent articles such as sanitary napkins, a sheet-like body in which a highly water-absorbent resin is dispersed and mixed in a water-absorbent fiber is used as an absorbent body.
A highly water-absorbent resin has properties such that when it comes into contact with water, it absorbs water and swells to form a gel, and once it absorbs water, it does not release even if a certain pressure is applied. Moreover, the highly water-absorbent resin has an amazing water absorption capacity that is several times its own volume. A highly water-absorbent resin cannot exhibit water absorption unless it is swollen to some extent, and the water absorption speed is slow. For this reason, when used for sanitary napkins and the like, the superabsorbent resin is dispersed and mixed in absorptive fibers such as pulverized pulp and rayon in the form of granular powder and crushed powder.

  By the way, the absorbent article is required to be thin in consideration of convenience of handling, a feeling of wearing, and the like, and the absorber, which is one of the constituents, is naturally required to be thin. However, in this type of absorbent body, in consideration of absorbability, a superabsorbent resin must be mixed in a certain amount or more. Therefore, when the absorber is thinned to a desired level, for example, to a thickness of about 2.0 mm, the content ratio of the superabsorbent resin becomes relatively large, and the superabsorbent resin absorbs water and swells. Adjacent to each other, the superabsorbent resins adjacent to each other bind to each other to generate a so-called “gel blocking”, and eventually, a desired water absorbing power cannot be expressed. Moreover, when the content ratio of the fibers is relatively lowered by increasing the content ratio of the superabsorbent resin, there is a problem that the absorber is liable to be slid or easily broken.

  Therefore, in order to reduce the thickness without increasing the content ratio of the highly water-absorbent resin, it is currently proposed to mechanically reduce the thickness of the absorber to a desired level by plain compression (pressing). .

  However, if it is mechanically thinned to the desired level by plain pressing, the degree of processing must be considerably increased, and the absorbent body becomes hard and stiff and cannot follow the movement of the shorts. As a result, the wearing feeling of the absorbent article becomes worse. Moreover, it becomes easy to make a big wrinkle in an absorber. Wrinkles can cause leakage.

  Therefore, in Japanese Patent Application No. 2001-227007, it has been proposed to impart softness by performing wave processing on the entire absorber. However, if wave processing is performed on the entire absorber, the region corresponding to the discharge port becomes soft. After that, it becomes easy to cause twist. If twisting occurs, a space will be created in the area corresponding to the outlet, causing leakage.

  The present invention has been made paying attention to the above-mentioned conventional problems, and it is possible to reduce the thickness of a sheet-like absorbent body in which a superabsorbent resin is dispersed and mixed in a water-absorbent fiber to a sufficient thickness, Another object of the present invention is to provide an absorbent article that has a cushioning property, can secure a good wearing feeling, is difficult to wrinkle, and has a relatively high rigidity in the discharge-corresponding region and is difficult to twist.

In order to achieve this object, the invention of claim 1 is interposed between a liquid-permeable top sheet, a liquid-impervious back sheet, and the liquid-permeable top sheet and the liquid-impervious back sheet. In an absorbent article having an absorber,
The absorbent body is a sheet-like body in which a superabsorbent resin is dispersed and mixed in a water-absorbent fiber, and a wavy processed portion is formed in a region excluding a discharge port corresponding region corresponding to a discharge port such as menstrual blood or urine. It is an absorbent article characterized by having.

  The invention of claim 2 is an absorbent article according to claim 1, characterized in that the torsion resistance energy value by the KES large-scale torsion tester is 6.5 to 20 gf · cm / cm. is there.

The invention according to claim 3 is the absorbent article according to claim 1 or 2, wherein a compression energy value by a KES compression tester is 0.5 to 2.0 gf · cm / cm ^2. It is a sex product.

  According to a fourth aspect of the present invention, in the absorbent article according to any one of the first to third aspects, the size of the region corresponding to the discharge port of the absorber is 50 to 90 mm in the longitudinal direction of the absorber, and the width direction. This is an absorbent article characterized by having a size of 20 to 40 mm.

  The invention according to claim 5 is the absorbent article according to any one of claims 1 to 4, wherein the thickness of the discharge port corresponding region of the absorber is 0.7 to 2.0 mm, and the thickness of the corrugated portion is The absorbent article is 1.1 to 2.0 times the thickness dimension of the discharge port corresponding region.

  A sixth aspect of the present invention is the absorbent article according to any one of the first to fifth aspects, wherein the absorbent further includes a hydrophobic synthetic fiber.

  The invention according to claim 7 is the absorbent article according to any one of claims 1 to 6, further comprising a protective sheet for protecting the corrugated portion on at least one of the front surface side and the back surface side of the absorber. This is an absorbent article.

  The invention according to claim 8 is the absorbent article according to claim 7, wherein the protective sheet is wave-processed together with the absorber.

  As described above, according to the present invention, the sheet-like absorbent body in which the superabsorbent resin is dispersed and mixed in the water-absorbent fiber is thinned to a sufficient thickness, and has softness and cushioning properties. It is possible to provide an absorbent article that can ensure a good wearing feeling and is difficult to wrinkle, and has a relatively high rigidity in the region corresponding to the discharge port, and is difficult to twist.

  Hereinafter, an embodiment of a sanitary napkin 1 according to a first embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the sanitary napkin 1 is overlaid on a liquid-impermeable back sheet 3, an absorbent body 5 held on one surface of the back sheet 3, and the absorbent body 5. It has a multilayer structure composed of a protective sheet 7 and a liquid-permeable top sheet 9 superimposed on the back sheet 3 with the absorbent body 5 and the protective sheet 7 interposed therebetween, and is bonded by hot melt, heat sealing, or the like. .

  The backsheet 3 is a sheet-like body and has a constricted portion on both sides of the center corresponding to the crotch portion when the backsheet 3 is attached. An adhesive (not shown) for fixing the sanitary napkin 1 to the shorts is applied to the back surface of the back sheet 3. The material of the backsheet 3 is a known material for absorbent articles, for example, a water shielding material such as polyethylene or polypropyne, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a water shielding material, and a water shielding material and a nonwoven fabric. A laminated nonwoven fabric formed by interposing a waterproof plastic film between them may be used. Preferably, it is a microporous sheet obtained by stretching a liquid impervious and having good air permeability, for example, an olefin resin such as polyethylene or polypropylene melt-kneaded with an inorganic filler.

  The top sheet 9 is also a sheet-like body. Examples of the material for the surface sheet include those known for absorbent articles, such as non-porous or perforated nonwoven fabrics and porous plastic sheets. Examples of the fibers constituting the nonwoven fabric include synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, regenerated fibers such as rayon and cupola, and natural fibers such as cotton. It is also conceivable to use 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.

  In both the back sheet 3 and the top sheet 9, the nonwoven fabric can be formed by an appropriate method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. The product is excellent in that it is rich in flexibility and drape, and the product obtained by the thermal bond method is excellent in that it is bulky and rich in flexibility.

The absorbent body 5 is a sheet-like body that is slightly smaller than the main part of the topsheet 9. The absorbent body 5 is obtained by dispersing and mixing a highly water-absorbent resin in water-absorbing fibers.
Examples of the water-absorbing fiber include pulp, that is, cellulose fibers, and those made of artificial cellulose fibers such as rayon and acetate. In the case of using wood pulp, softwood pulp having a longer fiber length is more suitable in terms of function and price than hardwood pulp.

Furthermore, hydrophobic synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters, and polyamides may be used in combination. When hydrophobic synthetic fibers (chemical fibers) are interposed between the water-absorbing fibers, the rigidity is increased and the waist is raised. Therefore, when an absorbent body containing hydrophobic synthetic fibers is used, there is an advantage that the elasticity of the wavy processed part is increased and the wave form is not easily broken during mounting.
In addition, when using hydrophobic synthetic fiber together, it is preferable to contain in 5-30 weight% with respect to an absorber. If it is less than 5% by weight, the expected effect is not exhibited. On the other hand, if it exceeds 30% by weight, the content ratio of the water-absorbent fibers and the highly water-absorbent resin is relatively lowered, and the absorbability is lowered.

  Examples of the superabsorbent resin include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutyne / maleic anhydride copolymer cross-linked, polysulfonic acid Examples thereof include a partially cross-linked water-swellable polymer such as a salt cross-linked product, polyethylene oxide, and polyacrylamide. Of these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred.

  The superabsorbent resin itself is a known one, and is produced by a known method and is commercially available. In the production stage, it is possible to adjust the water absorption force and the water absorption speed by adjusting the crosslinking density and the crosslinking density gradient.

  The superabsorbent resin is preferably contained at 10 to 60% by weight based on the absorber. If the amount is less than 10% by weight, the expected effect is not exhibited. On the other hand, if the amount exceeds 60% by weight, the entanglement between the water-absorbing fibers decreases, the strength of the absorbent body decreases, and breakage and cracking tend to occur. It is.

  The absorbent body 5 is a so-called nonwoven sheet, and can be produced by a known method for producing a nonwoven fabric, but is preferably formed by a dry method, more preferably a known airlaid method. In the airlaid method, for example, a water-absorbing fiber and a hydrophobic synthetic fiber when further used are dispersed in the air to form a thin web, and a highly water-absorbing resin is dispersed on this. By repeating these two steps, a mat in which the superabsorbent resin is dispersed and mixed is formed. Then, the upper and lower surfaces of the mat are bonded and formed into a sheet with a known binder such as natural latex.

Then, after performing a plain compression process, a wavy process is performed.
The corrugated processing can be performed by, for example, disposing a roll having a large number of ridges continuous in the circumferential direction on the surface and a roll having a ridge at the position corresponding to the ridge, and allowing the absorber to pass between the rolls. . Preferably, the pressure of the corrugated embossing is set to 1000 kgf, and the absorber is allowed to pass through in a state where the corrugations of the corrugated embossing are engaged by 1 mm.

  2 is a top view of the absorber 5, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line BB in FIG.

  The absorber 5 is waved and has a waved part 11. By applying the wavy process, the skin contact surface of the absorbent body 5 becomes dense to sparse, and softness and a cushioning effect are obtained. In addition, the wave-shaped processed portion 11 has a dent between the wave tops 13 to form a damming groove, which prevents diffusion of menstrual blood and the like, and increases the surface area of the absorber 5, so that menstrual blood and the absorber 5 are increased. As a result, menstrual blood and the like are rapidly absorbed by the absorbent body 5. Furthermore, the wavy processed portion 11 has improved dryness.

Further, the wave tops 13 are formed substantially in parallel along the longitudinal direction of the absorber 5. By comprising in this way, the suspension part which is most likely to have a sense of incongruity at the time of wearing can be finished softest.
The interval W between the wave tops 13 is preferably 1.0 to 10 mm. If it is less than 1 mm, it will be difficult to corrugate, and it will be difficult to maintain the corrugated form in the finished product. On the other hand, if it exceeds 10 mm, waves will not be formed on the absorber with sufficient density, and the softness and cushioning effect Because it is not as much as expected.

  The discharge port corresponding region 15 corresponding to the discharge port of menstrual blood, urine, or the like is not corrugated. The discharge port corresponding region 15 corresponds to the position corresponding to the wing when the wings are provided on both sides in the longitudinal direction of the sanitary napkin 1, and the constricted portion is provided on both sides in the longitudinal direction of the sanitary napkin 1. Corresponds to the position corresponding to the constricted portion, and corresponds to the position corresponding to the narrowest portion when the face sheet 9 is provided with fit emboss. By comprising in this way, it becomes difficult to twist in the discharge port corresponding | compatible area | region 15 of the absorber 5 at the time of mounting | wearing.

In the absorbent article including the normal sanitary napkin 1, the size of the discharge port corresponding region 15 of the absorbent body 5 is 50 to 90 mm in the width direction of the absorbent article. The dimension is preferably set to 20 to 40 mm. By making it correspond to the discharge port, the entire absorbent body can be improved in softness and cushioning effect, can reduce the sense of incongruity during use, and can improve wearing comfort. Moreover, the leak which generate | occur | produces with the twist at the time of use can be reduced.
In the sanitary napkin 1, the pattern of the discharge port corresponding area 15 is an oval (oval).

The thickness of the absorber 5 is preferably 0.7 to 2 mm in the thickest discharge port corresponding region 15 from the viewpoint of thinning.
On the other hand, the thickness dimension of the corrugated portion 11 is preferably 1.1 to 2.0 times the thickness dimension of the discharge port corresponding region 15. When the thickness magnification is less than 1.1, the softness and cushion effect are not expressed as expected. On the other hand, when the thickness magnification exceeds 2.0 times, the wavy processing becomes difficult and the wavy shape is not obtained in the finished product. This is because it becomes difficult to hold.

In order to evaluate the sensory characteristics such as the wearing feeling of the sanitary napkin 1, the torsion resistance energy value B obtained by the KES large-scale torsion tester is used as one index.
The KES large torsion tester means a large torsion tester (KES-YN-1-B) manufactured by Kato Tech Co., Ltd., and the size of the sample of the absorbent article is set to 150 mm long × 55 mm wide, The test conditions are as follows.
Measurement chuck: Set the edges of the upper and lower chucks and the lower chuck to match the edges of the sample.

Chuck interval: 115 mm, SENS (recording sensitivity): 5, twist angle: 7, CONTROL: 7, SPEED: 12, sample width: 6 cm
Then, a graph (X axis: ° (degrees), Y axis: gf · cm / cm (stress)) is created by measuring between 0 ° to ± 70 ° twist angles, and the twist angle is 10 ° to 65 ° from the graph. Is read, that is, the torsional resistance energy value B. FIG. 28A is a graph when it is hard, and FIG. 28B is a graph when it is soft.
The sanitary napkin 1 of the present invention preferably has a torsional resistance energy value B in the range of 6.5 to 20 gf · cm / cm. If it is less than 6.5 gf · cm / cm, it will be too soft and will tend to be twisted. It is because it is easy to shift.

In order to evaluate the sensory characteristics of the sanitary napkin 1, the compression energy value WC by the KES compression tester is used as another index.
The KES compression tester means a handy compression tester (KES-G5) manufactured by Kato Tech Co., Ltd., and tests the wave-like processed portion of the absorbent article as a finished product. The test conditions are as follows.

SENS (recording sensitivity): 2, force meter type: 1 kg, SPEED RANGE: 0.01 (cm / sec), DEF sensitivity: 5, pressurization area: 2 cm ² , uptake interval: 0.1 (standard), STROKE SET: 5.0, upper limit load: 50 gf / cm ²
Then, compression is performed under the above test conditions, and a compression energy value WC is obtained from a correlation diagram between pressure and deformation. FIG. 29 is a correlation diagram between pressure and deformation amount (X axis: mm (deformation amount), Y axis: gf / cm ² ), and the compression energy value WC is an area value of (a + b). The larger the compression energy value WC, that is, the larger the area value, the easier it is to compress, that is, softer, and the smaller the compression energy value WC, the harder.
The sanitary napkin 1 of the present invention preferably has a compression energy value WC within a range of 0.5 to 2.0 gf · cm / cm ² .

When the compression energy value WC is less than 0.5 gf · cm / cm ^2, it becomes too hard and uncomfortable at the time of wearing, and it cannot follow the movement of the shorts and tends to shift, while 2.0 gf · cm / cm This is because if it exceeds cm ² , the film becomes so soft that it is likely to cause twisting.

Reference numeral 7 denotes a protective sheet. The protective sheet 7 is approximately the same size as the absorber 5. By protecting the surface of the absorber 5 with the protective sheet 7, the wavy form of the wavy processed portion 11 can be maintained.
Examples of the material for the protective sheet 7 include known non-woven fabrics that are also used for surface sheets and the like for absorbent articles.

  The sanitary napkin 1 is formed by laminating an absorbent body 5, a protective sheet 7, and a top sheet 9 in order from the bottom on the back sheet 3, and the back sheet 3 and the top sheet 9 are bonded together by heat sealing. The

The thing 17 which integrated the absorber and sanitary sheet of the sanitary napkin which concerns on the 2nd Embodiment of this invention is demonstrated according to FIGS.
The material of the absorber 5 and the protection sheet 19 is the same as the material of the absorber and the protection sheet of the first embodiment. Moreover, the wavy pattern of the wavy processed portion 11 of the absorber 5 is the same as that of the absorber 5 of the first embodiment.
However, in this embodiment, the protective sheet 19 is also waved together with the absorber 5. The thing of such a form is formed by carrying out a wave process integrally in the state which has arrange | positioned the protection sheet 19 on the surface of the absorber 5. FIG.

  By arranging the protective sheet 19 integrally with the corrugated portion 11 of the absorbent body 5, the corrugated pattern is more stably held.

  A sanitary napkin absorbent body 21 according to a third embodiment of the present invention will be described with reference to FIGS.

The material of the absorber 21 is the same as the material of the absorber 5 of the first embodiment. However, in this embodiment, the wavy pattern of the wavy processed portion 23 of the absorber 21 is such that in the front and rear regions sandwiching the discharge port corresponding region 27, the intermittent wave has its top portion 26 extending substantially parallel to the longitudinal direction, and the discontinuous portion. Are arranged alternately between adjacent tops 26. On the other hand, in the region excluding the front and rear regions, the continuous wave is arranged so that the top portion 25 extends substantially parallel to the longitudinal direction. The part where the intermittent wave exists is softer than the part where the continuous wave exists because the waves are arranged sparsely.
By comprising in this way, in the front-back area | region which pinches | interposes the discharge port corresponding | compatible area | region 27, suitable softness can be provided according to the body shape of the front-back part of a crotch part.

Furthermore, in FIG. 11 and subsequent figures, various wave patterns of the wave-shaped processed portion 31 of the absorber 29 and patterns of the discharge port corresponding region 33 are shown. Reference numeral 35 indicates the top of the wave.
As shown in the figure, the wave pattern of the waved portion 31 includes a parallel pattern in the width direction, a diagonal pattern, a grid pattern, a diagonal grid pattern, a spiral pattern, and the like.

  As shown in the figure, the pattern of the discharge port corresponding area 33 is a square, a cross, a circle, an ellipse, or the like. As for the pattern of the discharge port corresponding area 33, the rhombus shape corresponds best to the shape of the discharge port, so that the area of the discharge port corresponding area 33 can be reduced, and the feeling of wearing can be reliably maintained. It is advantageous.

  Although the embodiment of the present invention has been described above, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. Included in the invention.

  For example, the protective sheet may be disposed on both sides of the absorbent body. Further, the protective sheet may not be corrugated.

1 is an overall perspective view of a sanitary napkin according to a first embodiment of the present invention. It is a top view of the absorber of the sanitary napkin shown in FIG. It is AA sectional drawing of the absorber shown in FIG. It is BB sectional drawing of the absorber shown in FIG. It is a perspective view of the absorber and protective sheet of the sanitary napkin which concern on the 2nd Embodiment of this invention. It is AA sectional drawing of the absorber and protection sheet which are shown in FIG. It is BB sectional drawing of the absorber shown in a 5th, and a protection sheet. It is a top view of the absorber of the sanitary napkin which concerns on the 3rd Embodiment of this invention. It is AA sectional drawing of the absorber shown in FIG. It is BB sectional drawing of the absorber shown in 9th. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a top view of the absorber of the sanitary napkin which concerns on another embodiment of this invention. It is a figure explaining the calculation method of a twist resistance energy value. It is a figure explaining the calculation method of a compression energy value.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 3 ... Back sheet, 5 ... Absorber, 7 ... Protective sheet, 9 ... Top sheet, 11 ... Wave-like processed part, 13 ... Wave top part, 15 ... Drain corresponding area, 17 ... Absorber and Protective sheet, 19 ... Wavyly processed protective sheet, 21 ... Absorber, 23 ... Wave-like processed part, 25 ... Top of continuous wave, 26 ... Top of intermittent wave, 27 ... Discharge area, 29 ... Absorber, 31 ... Wavy processed part, 33 ... Discharge port area, 35 ... Wave top

Claims (8)

In an absorbent article having a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body interposed between the liquid-permeable top sheet and the liquid-impervious back sheet,
The absorbent body is a sheet-like body in which a superabsorbent resin is dispersed and mixed in a water-absorbent fiber, and a wavy processed portion is formed in a region excluding a discharge port corresponding region corresponding to a discharge port such as menstrual blood or urine. An absorbent article, comprising:   The absorbent article according to claim 1, wherein the torsion resistance energy value measured by a KES large-scale torsion tester is 6.5 to 20 gf · cm / cm. In an absorbent article according to claim 1 or 2, an absorbent article compression energy value by KES compression tester is characterized in that it is a 0.5~2.0gf · cm / cm ^2.   The absorbent article according to any one of claims 1 to 3, wherein the size of the absorbent outlet corresponding region is 50 to 90 mm in the longitudinal direction of the absorber and 20 to 40 mm in the width direction. An absorbent article characterized by being.   The absorbent article according to any one of claims 1 to 4, wherein the thickness dimension of the discharge port corresponding region of the absorber is 0.7 to 2.0 mm, and the thickness dimension of the corrugated processed portion corresponds to the discharge port. An absorbent article characterized by being 1.1 to 2.0 times the thickness of the region.   The absorbent article according to any one of claims 1 to 5, further comprising a hydrophobic synthetic fiber in the absorbent body.   The absorbent article according to any one of claims 1 to 6, further comprising a protective sheet for protecting the corrugated portion on at least one of the front surface side and the back surface side of the absorber. The absorbent article according to claim 7, wherein the protective sheet is corrugated together with the absorbent body.

Images