JP2021003518A - Absorbent article - Google Patents

Abstract

To provide an absorbent article for improving liquid return prevention property by allowing a liquid to rapidly wet and spread to a lower layer of an absorbent body when a liquid is received by urination or the like, so as to enhance spreading property and liquid permeability.SOLUTION: An absorbent article includes a liquid permeable top sheet, a liquid impermeable back sheet, and absorbent bodies arranged between the top sheet and the back sheet. The absorbent bodies comprise: a first absorbent body including cellulose acetate tow and a super absorbent polymer; second absorbent bodies including fluff pulp and a super absorbent polymer; and an open hole film. The first absorbent body is arranged at a center part of the absorbent article in a width direction and the second absorbent bodies are arranged on both ends in a width direction and/or on a back sheet side of the first absorbent body. The open hole film is arranged to cover a whole part of the first absorbent body from a top sheet side by excluding the surface on the back sheet side, and also not to cover both of the second absorbent bodies at both ends in a width direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to an absorbent article comprising a perforated film.

In general, absorbent items such as light incontinence care products, urine pads, pants-type disposable diapers, and tape-stopping disposable diapers are placed between a liquid-permeable top sheet, a liquid-impermeable back sheet, and both sheets. It is composed of the absorbed body. As a result, body fluids such as urine are absorbed by the absorber through the top sheet and are prevented from leaking to the outside by the back sheet. Various measures have been taken for such absorbent articles in order to improve the absorbability of body fluids, improve the wearing feeling of the wearer, prevent leakage, and the like.

For example, there is a technique for improving absorption performance such as wet back and absorption rate by providing a perforated film at a predetermined position of an absorbent article. The opening area of the perforated film is the skin side surface and the non-skin side surface, and by setting the skin side> the non-skin side, the wet back and the absorption rate are improved.

As an absorbent article using a perforated film, for example, Patent Document 1 describes an absorbent article having a liquid-permeable surface material, a liquid-retaining absorbent material, and a liquid-impermeable leak-proof material. At least, it is made of a liquid-permeable sheet formed by laminating and integrating a skin contact surface layer and a non-skin contact surface layer, and the skin contact surface layer is made of an open film or synthetic fiber made of a thermoplastic resin. A technique formed by a non-woven fabric is disclosed.

Further, Patent Document 2 describes an absorber having an absorber layer containing at least one of a super absorbent polymer (hereinafter, also referred to as SAP) and fluff pulp as an absorber component, wherein the absorber is an absorber. It is provided in contact with the layer and is provided with an absorbent coating layer made of a water-resistant, highly breathable synthetic resin pore-forming film, and the absorbent coating layer prevents the absorbent components from being separated from the absorber and at the same time. Constructed to maintain morphological stability, the perforated film has a large number of funnel-shaped protrusions with small crown openings and large bottom openings, the top of which is the crown. Absorbents arranged in contact with the absorber layer are disclosed.

Patent Document 3 discloses a method for producing an absorbent article by opening a plurality of fibers of a tow with a gas, adding water-absorbent granules to the tow, and adhering a binder to the toe. According to this production method, the cellulose acetate tow can be opened and the fibers can be highly supported with a highly absorbent polymer.

Japanese Unexamined Patent Publication No. 8-66425 JP-A-2002-355271 JP-A-2018-003206

However, in Patent Document 1 provided with the above-mentioned perforated film, although all of them are excellent in liquid return prevention property such as wet bag and absorption rate, they are effective in diffusivity of liquid in an absorbent article. However, the absorption performance of the absorber has not been fully exhibited. Further, Patent Document 2 uses an opening film having a smaller opening area on the skin side surface than the conventional non-skin side surface, and has a configuration in which the surface having a small opening area is in contact with the absorber. However, even in this case, there is no technical idea of improving the diffusibility of the liquid.
Further, Patent Document 3 has a drawback that cellulose acetate tow is an absorber that brings softness as compared with fluff pulp, but has a weak water holding power and an insufficient effect of preventing liquid return. In addition, the liquid permeability is slow, and there is a drawback that the performance of the absorber used for the absorbent article is insufficient.

As in the above literature, there are some sanitary napkins and disposable diapers that use a perforated film as the surface material on the receiving side, and by arranging the perforated film, liquid permeability and liquid return prevention are improved. It will be improved. However, although many of the perforated films are more expensive than ordinary non-woven fabrics, they are insufficient to show more beneficial liquid permeability and liquid return prevention property, and because they are resin films, they have a soft surface. I felt the hardness.

Therefore, the present invention has been made in view of the above problems, and the present invention quickly wets and spreads to the lower layer of the absorber when receiving the liquid by urination or the like, so that the diffusivity and the liquid permeability are improved. It is an object of the present invention to provide an absorbent article having a feature of being improved and improving the liquid return prevention property.

In view of the above problems, the inventors of the present invention have conducted diligent research. As a result, two types of absorbers, a first absorber containing cellulose acetate tow and a highly absorbent polymer and a second absorber containing fluff pulp and a highly absorbent polymer, were arranged, and the perforated film was placed on the top sheet side. The present invention has been completed by finding that the above problems can be solved by arranging the first absorber so as to cover the entire surface except the surface on the back sheet side. Specifically, the present invention provides the following.

(1) The first aspect of the present invention is an absorbent having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet. An article, said absorber having a first absorber containing cellulose acetate tow and a highly absorbent polymer, a second absorber containing fluff pulp and a highly absorbent polymer, and a plurality of funnel-shaped openings. It has a perforated film, the first absorber is arranged at the center of the absorbent article in the width direction, and the second absorber is located at both ends of the first absorber in the width direction and / or on the backsheet side. The perforated film is arranged so as to cover the entire surface from the top sheet side to the back sheet side of the first absorber and not to cover both of the second absorbers at both ends in the width direction. It is an absorbent article, characterized in that it is made.

(2) The second aspect of the present invention is the absorbent article according to (1), wherein a liquid diffusible second sheet is arranged between the top sheet and the absorbent body. Is to be.

(3) A third aspect of the present invention is the absorbent article according to (1) or (2), wherein the top sheet and / or the second sheet is an air-through nonwoven fabric. Is.

(4) The fourth aspect of the present invention is the absorbent article according to (2) or (3), wherein the ratio of the basis weight of the top sheet to the second sheet is 40% or more and 130% or less. It is characterized by that.

(5) A fifth aspect of the present invention is the absorbent article according to any one of (1) to (4), wherein the first absorber and the second absorbent with respect to the total weight of the absorber. It is characterized in that the ratio of the total weight of the highly absorbent polymer contained in the body is 40% or more.

(6) A sixth aspect of the present invention is the absorbent article according to any one of (1) to (5), wherein the perforated area ratio of the perforated film is 25% or more and 50% or less. It is characterized by being.

(7) A seventh aspect of the present invention is the absorbent article according to any one of (1) to (6), wherein the opening diameter of the opening film is 2 mm or less, and the number of holes is large. It is characterized in that it is 50 pieces / cm ² or more and the basis weight is 20 g / m ² or more and 60 g / m ² or less.

(8) An eighth aspect of the present invention is the absorbent article according to any one of (1) to (7), wherein the perforated film has a small perforated diameter on one surface in the thickness direction. A hole having a large opening diameter on the other surface is provided, and the ratio of the opening diameter of one surface having a large opening diameter to the opening diameter of the other surface having a small opening diameter is 0.75 or more and 0.98. It is characterized by the following.

(9) A ninth aspect of the present invention is the absorbent article according to (8), wherein the perforated film is arranged so that the perforation on the side having the larger perforation diameter faces the backsheet side. It is characterized by being done.

Therefore, according to the present invention, when the liquid is received by urination or the like, the diffusivity and the liquid permeability are improved by quickly wetting and spreading toward the lower layer of the absorber, and the liquid return prevention property is improved. Absorbent articles can be provided.

It is a top view of the absorbent article of this invention. It is a cross-sectional view of the _X 1 -X ₁ in Fig. It is sectional drawing of the perforated film of this invention.

Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the accompanying drawings, but these are listed for exemplification purposes and do not limit the present invention. Absent. The same elements are designated by the same reference numerals throughout the description of the embodiments.

Further, in the description of the present specification, the time when the absorbent article 1 is worn means at least one of the time when the absorbent article 1 is worn and the time after the absorbent article 1 is worn. The longitudinal direction of the absorbent article 1 is a direction extending in front of and behind the wearer when the absorbent article 1 is worn, and is a direction indicated by reference numeral Y in the drawing. The width direction of the absorbent article 1 is a direction laterally or orthogonal to the longitudinal direction, and is a direction indicated by reference numeral X in the drawing. Further, the skin contact surface is the surface of the front and back surfaces of each member such as the absorber that is arranged on the wearer's skin side when worn, and the non-skin contact surface is each member such as the absorber. Of the front and back sides of the above, the side facing the wearer's skin side when worn. Body fluid refers to the liquid discharged from the body to the outside of the body, such as urine, blood, and water in loose stool. Further, examples of the absorbent article 1 include, but are not limited to, light incontinence care products, urine absorbing pads, pants-type disposable diapers, and tape-stopping disposable diapers, regardless of whether they are for babies or adults. It may be an absorbent article of.

<Absorbable article>
FIG. 1 is a plan view of the absorbent article 1 according to the embodiment of the present invention as viewed from the top sheet 10 side. As shown in FIG. 1, the absorbent article 1 has a liquid-permeable top sheet 10 arranged on the skin contact surface side and a liquid non-liquid material arranged on the non-skin contact surface side facing the top sheet 10. A transparent back sheet 20 and an absorber 30 arranged between the top sheet 10 and the back sheet 20 are provided. As a result, the absorber 30 has a structure sandwiched between the top sheet 10 and the back sheet 20.

It is preferable that the dimension of the absorbent article 1 in the longitudinal direction is 100 mm or more and 800 mm or less, and the dimension in the width direction is 50 mm or more and 500 mm or less. By adjusting the dimensions of the absorbent article 1 within the above range, an absorbent article 1 suitable for a light incontinence care product, a urine absorbing pad, a pants-type disposable diaper, a tape-stopping disposable diaper, or the like can be obtained.

Further, as shown in FIG. 2, the absorbent article 1 is used for three-dimensional gathering on the top sheet 10 along the longitudinal direction of the absorbent article 1 in order to prevent lateral leakage of the body fluid excreted by the user. A pair of three-dimensional gathers 50 having elastic members may be provided. The outer end of the three-dimensional gather 50 in the width direction of the absorbent article 1 is fixed to the back sheet 20, the inner end thereof is fixed to the top sheet 10, and the center thereof is a free end not fixed to the top sheet 10. A three-dimensional gather sheet is arranged. By providing the elastic member for three-dimensional gather along the longitudinal direction, the three-dimensional gather 50 has an upright property and can be deformed according to the body shape of the wearer. For example, a polyurethane thread, a strip-shaped polyurethane film, a thread-shaped or strip-shaped natural rubber, or the like is used as the elastic member for the three-dimensional gather, and the three-dimensional gather sheet is water-repellent or liquid-impermeable formed of hydrophobic fibers. Nonwoven fabrics such as spunbonded non-woven fabrics, melt-blown non-woven fabrics, and composite non-woven fabrics in which spunbond / melt-blow / spunbond are laminated are used.

<Top sheet>
The top sheet 10 may be formed of a base material having liquid permeability such that body fluid moves to the absorber 30, and for example, a non-woven fabric such as an air-through non-woven fabric, a thermal bond non-woven fabric, or a spunbond non-woven fabric, or a thermal bond / It is formed from a material such as a composite non-woven fabric in which spunbonds are laminated, a foam film such as urethane foam, or a composite sheet in which these are laminated, and among them, an air-through non-woven fabric is preferable. Further, the surface of the top sheet 10 may be embossed or perforated in order to improve the liquid permeability. As a method for performing these embossing and drilling processes, known methods can be carried out without limitation. Further, in order to reduce irritation to the skin, the top sheet 10 may contain a lotion, an antioxidant, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer and the like.

From the viewpoint of strength, workability and liquid return amount, the basis weight of the top sheet 10 is preferably 18 g / m ² or more and 40 g / m ² or less. The shape of the top sheet 10 is not particularly limited, but may be any shape that covers the absorber 30, which is required to guide the body fluid to the absorber 30 so as not to leak.

<Back sheet>
The back sheet 20 may be formed by using a base material having a liquid impermeable property so that the body fluid held by the absorber 30 does not wet the clothes, and the resin film or the resin film and the non-woven fabric are laminated. It is formed from a material such as a composite sheet. The non-woven fabric used for the composite sheet is not particularly limited in the manufacturing method, and examples thereof include spunbonded non-woven fabrics, melt-blown non-woven fabrics, composite non-woven fabrics in which spunbond / melt-blow, spunbond / melt-blow / spunbond are laminated, and composite materials thereof. Can be mentioned. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and a composite film of polyethylene and polypropylene.

From the viewpoint of strength and workability, the basis weight of the back sheet 20 is preferably 15 g / m ² or more and 60 g / m ² or less. Further, in order to prevent stuffiness at the time of mounting, it is preferable that the back sheet 20 has air permeability. In order to provide the back sheet 20 with breathability, for example, a filler may be blended in the resin film of the base material, or the back sheet 20 may be embossed. Calcium carbonate can be mentioned as the filler, and a known method can be used without limitation as the blending method.

<Absorbent>
In the absorbent article 1 of the present invention, the dimension LO of the longest width in the longitudinal direction of the absorber 30 is preferably 100 mm or more and 800 mm or less, and more preferably 150 mm or more and 500 mm or less. Further, the dimension WO of the longest width in the width direction of the absorber 30 is preferably 50 mm or more and 500 mm or less, and more preferably 70 mm or more and 105 mm or less.
As shown in FIG. 2, the absorber 30 of the present invention includes a first absorber 31 containing cellulose acetate tow and a highly absorbent polymer, and a second absorber 32 containing fluff pulp and a highly absorbent polymer. It has an opening film 33 having funnel-shaped openings.
Further, as shown in FIG. 2, the absorber 30 is used as a carrier for the purpose of preventing leakage of the highly absorbent polymer contained in the first absorber 31 and the second absorber 32 and stabilizing the overall shape of the absorber 30. It may be wrapped in a sheet 34. The base material of the carrier sheet 34 may be any one having hydrophilicity, and examples thereof include hydrophilic non-woven fabrics such as tissue, absorbent paper, and air-laid non-woven fabric.

(First absorber)
The first absorber 31 has a cellulose acetate tow and a highly absorbent polymer, and is arranged in the central portion in the width direction of the absorbent article 1 as shown in FIG. By arranging the first absorber 31, which is entirely covered with the perforated film 33 described later, at the central portion in the width direction of the absorbent article 1, that is, at the urination position of the wearer, the initial absorption rate is improved and the body fluid is released. Diffusibility and liquid permeability are improved by quickly wetting and spreading to the lower layer of the absorber 30.
And are arranged in the width direction central portion as shown in FIG. 1, the longitudinal center line X ₁ -X ₁ of the absorbent article 1, the intersection of the widthwise center line Y ₁ -Y ₁ of the absorbent article 1 It is shown that the centers of gravity of the first absorber 31 are arranged so as to overlap each other. Further, the dimension WC in the width direction of the first absorber 31 shown in FIG. 1 is preferably 10 mm or more and 80 mm or less, and 10 mm or more and 50 mm or less when the absorbent article 1 is a light incontinence care product. Is more preferable. In the case of a urine collecting pad, it is preferably 10 mm or more and 200 mm or less, and more preferably 10 mm or more and 100 mm or less. In the case of a large urine collecting pad, it is preferably 10 mm or more and 470 mm or less, and more preferably 10 mm or more and 100 mm or less. The longitudinal dimension LC is preferably 50 mm or more and 300 mm or less when the absorbent article 1 is a light incontinence care product, and preferably 50 mm or more and 550 mm or less when it is a urine absorbing pad, and is large. In the case of the urine collecting pad, it is preferably 50 mm or more and 770 mm or less.

The highly absorbent polymer used for the cellulose acetate tow on which the highly absorbent polymer is supported is not particularly limited as long as it can absorb body fluids and prevent backflow, and is based on sodium polyacrylate or polyaspartic acid. Salt-based, (starch-acrylic acid) graft copolymer, (acrylic acid-vinyl alcohol) copolymer, (isobutylene-maleic anhydride) copolymer and those formed from materials such as saponified products are used. be able to. Among these, sodium polyacrylate is preferable from the viewpoint of the amount of absorption per weight.

Further, the cellulose acetate tow is preferably spread, and the basis weight of the opened cellulose acetate tow is preferably 20 g / m ² or more and 120 g / m ² or less, and 45 g / m ² or more and 85 g / m / m. It is more preferably m ² or less. By setting the value within the above numerical range, there is no problem in forming the first absorber 31 and there is no problem in the holding performance of SAP.

(Second absorber)
The second absorber 32 has a fluff pulp and a highly absorbent polymer. Examples of the fluff pulp include wood pulp (for example, coniferous bleached kraft pulp (N-BKP) such as Southern pine and Douglas fur), synthetic fiber, resin fiber, non-wood pulp, etc. deflated into cotton. it can. The basis weight of the fluff pulp, is preferably 100 g / ^{m 2} or more 800 g / ^{m 2} or less, more preferably 325 g / ^{m 2} or more 685 g / ^{m 2} or less. As a result, more body fluid can be absorbed without impairing the touch. Further, as the highly absorbent polymer, the same polymer as the above-mentioned first absorber 31 can be used.

Further, as shown in FIG. 2, the second absorber 32 includes an upper layer second absorber 321 arranged at both ends in the width direction of the first absorber 31 and a lower layer second absorber 322 arranged on the back sheet side. It is preferable to have a two-layer structure of, but either one may be used. When the second absorber 32 is one layer, it becomes easier to transfer the liquid to the lower layer of the absorber 30, and when the second absorber 32 is two layers, the body fluid that the first absorber 31 and the upper second absorber 321 cannot completely absorb. Is passed through the lower layer second absorber 322, and the liquid diffusivity, absorption capacity, and liquid permeability are improved.

In the first absorber 31 and the second absorber 32, the form of the absorbent fiber (cellulose acetate tow and fluff pulp) and SAP may be formed by mixing SAP particles in the absorbent fiber.

In the first absorber 31 and the second absorber 32, the basis weight of SAP supported on the cellulose acetate tow and the fluff pulp is preferably 100 g / m ² or more and 600 g / m ² or less, and 245 g / m ² or more. More preferably, it is 445 g / m ² or less. By setting the value within the above numerical range, gel blocking in the absorber 30 can be prevented, and a large amount of body fluid can be absorbed in the absorber 30.
Further, the ratio of the total weight of the highly absorbent polymer contained in the first absorber 31 and the second absorber 32 to the weight of the entire absorber 30 is preferably 40% or more, preferably 50% or more and 80% or less. Is more preferable. By setting the weight ratio of the highly absorbent polymer within the above range, gel blocking in the absorber 30 can be prevented, and a large amount of body fluid can be absorbed in the absorber 30.

<Opening film>
The absorber 30 in the absorbent article 1 of the present invention has a perforated film 33 having a plurality of funnel-shaped perforations, and the perforated film 33 is first from the top sheet 10 side as shown in FIG. The second absorber 32 at both ends in the width direction is arranged so as to cover the entire surface of the absorber 31 except for the surface on the back sheet 20 side. By arranging the perforated film 33 in this way, the entire surface of the first absorber 31 except for the surface on the back sheet 20 side is covered with the perforated film 33, which is a drawback of the cellulose acetate tow possessed by the first absorber 31. It is possible to supplement a certain ease of liquid return and improve the liquid return prevention property of the absorber 30.

The perforated film 33 preferably has liquid permeability and liquid diffusivity such that the body fluid moves to the first absorber 31, and the shape of the perforated film 33 is not particularly limited, but the strength is increased. From the viewpoint of processability, the basis weight of the perforated film 33 is preferably 20 g / m ² or more and 60 g / m ² or less, and more preferably 23 g / m ² or more and 30 g / m ² or less. Further, from the viewpoint of liquid permeability, the number of holes is preferably 50 / cm ² or more. Similarly, from the viewpoint of liquid permeability, the opening area ratio is preferably 25% or more and 50% or less, and more preferably 30% or more and 50% or less. Further, from the viewpoint of liquid diffusivity, the opening diameter is preferably 2 mm or less, more preferably 0.50 mm or more and 0.65 mm or less. By setting the basis weight, number of holes, opening area ratio, and opening diameter of the opening film 33 within the above ranges, the holes are excellent in strength and workability, and have excellent liquid permeability and liquid diffusivity. Film 33 is obtained. The material of the perforated film 33 is formed of, for example, polyethylene.

Further, as shown in FIG. 3, the opening film 33 is provided with holes such that the opening diameter L1 on one surface is small and the opening diameter L2 on the other surface is large in the thickness direction. From the viewpoint of liquid diffusivity, the ratio L1 / L2 of the opening diameter L2 on one surface having a large opening diameter and the opening diameter L1 on the other surface having a small opening diameter is 0.75 or more and 0.98 or less. preferable.
Further, it is preferable that the opening film 33 is arranged so that the opening on the side having a large opening diameter, that is, the opening on the side having the opening diameter L2 faces the back sheet 20 side. By arranging the openings on the opening diameter L2 side so as to face the back sheet 20 side, the body fluid absorbed from the top sheet 10 side is quickly diffused to the entire first absorber 31 and the first absorption Since the opening diameter from the body 31 to the top sheet 10 becomes smaller, the liquid return prevention property is also improved.

<Second sheet>
Further, as shown in FIG. 2, it is preferable to arrange a liquid diffusible second sheet 40 between the top sheet 10 and the absorber 30 in order to improve the liquid diffusibility of the absorbent article 1. The base material of the second sheet 40 may have a permeation rate of body fluid faster than that of the top sheet 10 and may quickly diffuse the body fluid into the absorber 30, and for example, a hydrophilic non-woven fabric, particularly an air-through non-woven fabric is preferable. The thickness of the second sheet 40 is preferably 0.1 mm or more, and the basis weight thereof is preferably 10 g / m ² or more and 60 g / m ² or less, and more preferably 15 g / m ² or more and 40 g / m ² or less. If the thickness is less than 0.1 mm, or the basis weight is less than 10 g / m ² or larger than 60 g / m ² , the liquid is not sufficiently diffused over the entire upper surface of the absorber 30. The ratio of the basis weight of the top sheet 10 to the second sheet 40 is preferably 40% or more and 130% or less, and more preferably 45% or more and 110% or less. When the basis weight ratio is within the above range, the absorbent article 1 having excellent diffusivity and liquid permeability can be obtained.
The shape of the second sheet 40 is not particularly limited, but it is preferably a shape that can completely cover the surface of the absorber 30 so that the body fluid diffuses all over the absorber 30.

<Career sheet>
In the present invention, in addition to the carrier sheet 34 covering the absorber 30, a carrier sheet may be arranged on the skin contact surface side and / or the non-skin contact surface side of the absorber 30 (not shown). As the base material of the carrier sheet arranged on the skin contact surface side and / or the non-skin contact surface side, the same base material as the above-mentioned carrier sheet 34 can be used. When a plurality of carrier sheets are arranged, the base material of each carrier sheet may be the same or different.

Although the present invention has been described above using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above-described embodiments and examples. It will be apparent to those skilled in the art that various changes or improvements can be made to the above embodiments. Further, it is clear from the description of the scope of claims that the form to which such a modification or improvement is added may be included in the technical scope of the present invention.

1 Absorbent article 10 Top sheet 20 Back sheet 30, 31, 32, 321, 322 Absorber 33 Perforated film 34 Carrier sheet 40 Second sheet 50 Three-dimensional gather

Claims (9)

An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber arranged between the top sheet and the back sheet.
The absorber includes a first absorber containing cellulose acetate tow and a highly absorbent polymer, a second absorbent containing fluff pulp and a highly absorbent polymer, and a perforated film having a plurality of funnel-shaped pores. Have and
The first absorber is arranged at the center of the absorbent article in the width direction.
The second absorber is arranged at both ends in the width direction and / or on the backsheet side of the first absorber.
The perforated film is arranged so as to cover the entire surface from the top sheet side to the back sheet side of the first absorber, and not to cover either of the second absorbers at both ends in the width direction. An absorbent article characterized by. The absorbent article according to claim 1, wherein a liquid diffusible second sheet is arranged between the top sheet and the absorbent body. The absorbent article according to claim 1 or 2, wherein the top sheet and / or the second sheet is an air-through non-woven fabric. The absorbent article according to claim 2 or 3, wherein the ratio of the basis weight of the top sheet to the second sheet is 40% or more and 130% or less. Claims 1 to 4, wherein the ratio of the total weight of the first absorber and the highly absorbent polymer contained in the second absorber to the total weight of the absorber is 40% or more. The absorbent article according to any one item. The absorbent article according to any one of claims 1 to 5, wherein the perforated area ratio of the perforated film is 25% or more and 50% or less. The claim is characterized in that the opening diameter of the opening film is 2 mm or less, the number of holes is 50 pieces / cm ² or more, and the basis weight is 20 g / m ² or more and 60 g / m ² or less. The absorbent article according to any one of 1 to 6. The perforated film is provided with holes having a small opening diameter on one surface and a large opening diameter on the other surface in the thickness direction.
Claims 1 to 7 are characterized in that the ratio of the opening diameter of one surface having a large opening diameter to the opening diameter of the other surface having a small opening diameter is 0.75 or more and 0.98 or less. The absorbent article according to any one of the above. The absorbent article according to claim 8, wherein the perforated film is arranged so that the perforations on the side having a larger opening diameter face the backsheet side.