CN111150555A

CN111150555A - Absorbent article

Info

Publication number: CN111150555A
Application number: CN201811324122.0A
Authority: CN
Inventors: 穆沁一; 柏木政浩; 马雪琪; 蒋维; 蒋黎
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2020-05-15
Anticipated expiration: 2038-11-08
Also published as: CN111150555B; JP2020075085A

Abstract

The present invention relates to an absorbent article. The purpose of this is to easily suppress the planar diffusion of excrement on the surface of a skin side sheet and reduce the possibility of leakage of excrement from an absorbent article, even when cotton is used as the skin side sheet. An absorbent article (1) having a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, and comprising an absorbent body (10), a skin side sheet (2) that is disposed on the skin side of the absorbent body (10) in the thickness direction, and an intermediate sheet (3) that is disposed between the absorbent body (10) and the skin side sheet (2) in the thickness direction, wherein the skin side sheet (2) comprises cotton, and the absorbent article (1) comprises a linear compression section (Es) that is formed so as to compress only the skin side sheet (2) and the intermediate sheet (3) in the thickness direction, and a hole section (H) that passes through the skin side sheet (2) and the intermediate sheet (3) from the skin side and reaches the absorbent body (10).

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

Examples of absorbent articles to be used while being fixed to clothing of a wearer include sanitary napkins, pantiliners, and absorbent pads. It is known that the use of cotton fibers in the top sheet 11 that is in direct contact with the skin of the wearer, as in the absorbent article disclosed in patent document 1, improves the skin feel.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open No. 2017-205143

Disclosure of Invention

Problems to be solved by the invention

However, in the absorbent article using cotton fibers for the top sheet 11 shown in patent document 1, since the liquid absorption properties and moisture retention properties of the cotton fibers are high, the liquid to be absorbed is likely to diffuse in the layer of the top sheet 11, that is, the sheet layer in contact with the skin of the wearer, and the liquid to be absorbed may be difficult to reach the second sheet 12 and the absorbent body 13. Therefore, there is a possibility that the wearer may be given a feeling of discomfort such as stickiness due to the liquid absorbed.

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to easily suppress the planar diffusion of excrement on the surface of a skin side sheet and reduce the possibility of leakage of excrement from an absorbent article, even when a material containing cotton is used for the skin side sheet.

Means for solving the problems

A main technical means for achieving the above object is an absorbent article having a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, the absorbent article including: an absorbent body; a skin side sheet disposed on the skin side of the absorber in the thickness direction; and an intermediate sheet disposed between the absorbent body and the skin side sheet in the thickness direction, wherein the skin side sheet comprises cotton, and the absorbent article comprises a linear compressed portion formed so as to compress only the skin side sheet and the intermediate sheet in the thickness direction, and a hole portion penetrating the skin side sheet and the intermediate sheet from the skin side and reaching the absorbent body.

Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, even when cotton is used as the skin side sheet, the planar diffusion of excrement on the surface of the skin side sheet can be easily suppressed, and the possibility of leakage of excrement from the absorbent article can be reduced.

Drawings

Fig. 1 is a plan view of the sanitary napkin 1 as viewed from the skin side.

Fig. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side.

Fig. 3 is a schematic sectional view of the sanitary napkin 1 shown downward in the direction of a-a in fig. 1.

Fig. 4 is an enlarged view of the center portion 1B.

Fig. 5 is a view illustrating a cross section of a portion shown downward as B-B in fig. 4.

Fig. 6A is a view illustrating a cross section of a portion shown downward as viewed from C-C in fig. 4. Fig. 6B is a view illustrating a cross section of a portion shown downward as D-D in fig. 4.

Fig. 7 is a diagram illustrating the body compression region W.

Description of the reference numerals

1. Sanitary napkins (absorbent articles);

1A, a front side part; 1B, a central part; 1C, a rear side part; 1W, wing part;

2. a skin side panel; 3. an intermediate sheet;

4. a non-skin side panel; 5. a fin;

6. a side panel;

8. a central bonding portion; 9. a flap adhesive portion;

10. an absorbent body; 11. an absorbent core; 12. a cover sheet;

es, a linear compression part; eb. A main body compression section;

H. a hole portion; n, a non-compression part; u, inner region; w, body compression area.

Detailed Description

At least the following matters will be apparent from the description of the present specification and the accompanying drawings.

An absorbent article having a longitudinal direction, a width direction, and a thickness direction that are orthogonal to each other, the absorbent article comprising: an absorbent body; a skin side sheet disposed on the skin side of the absorber in the thickness direction; and an intermediate sheet disposed between the absorbent body and the skin side sheet in the thickness direction, wherein the skin side sheet comprises cotton, and the absorbent article comprises a linear compressed portion formed so as to compress only the skin side sheet and the intermediate sheet in the thickness direction, and a hole portion penetrating the skin side sheet and the intermediate sheet from the skin side and reaching the absorbent body.

In such an absorbent article, the linear compressed portions having a higher fiber density tend to suppress the planar diffusion of excrement on the surface of the skin side sheet, and the holes extending from the skin side sheet to the absorbent body and reaching the absorbent body tend to allow the excrement to be absorbed by the absorbent body. Therefore, even when cotton that improves the skin feel or makes the wearer feel a high-quality feel is used for the skin side sheet, the diffusion of excrement in a planar manner on the surface of the skin side sheet can be easily suppressed, and the possibility of leakage of excrement from the absorbent article can be reduced.

According to this absorbent article, it is desirable that the linear compressed portions intersect the longitudinal direction and the width direction, respectively.

With such an absorbent article, it is possible to easily suppress the spread of excrement on the plane of the surface of the skin side sheet, and to reduce the possibility of leakage of excrement from the absorbent article.

According to the absorbent article, it is desirable that the linear compressed portion is curved.

With such an absorbent article, as compared with the case where the linear compressed portion is formed in a straight line, the diffusion of excrement in the plane of the surface of the skin side sheet can be more easily suppressed, and the possibility of the absorbent article being bent along the linear compressed portion can be reduced.

According to this absorbent article, it is preferable that the linear compressed portions are arranged in plural, and a plurality of inner regions surrounded by the linear compressed portions are provided, and each of the inner regions has a convex shape whose central portion protrudes toward the skin side.

With such an absorbent article, the plurality of protrusions makes it easy to give the wearer an impression that the absorbent article looks soft.

According to this absorbent article, it is desirable that the linear compressed portions are arranged in plural numbers, and that plural inner regions surrounded by the linear compressed portions not having the intersection points between the linear compressed portions are provided.

With such an absorbent article, the possibility that excrement diffuses along the continuous linear compressed portions and leaks from the outside in the longitudinal direction and the width direction of the absorbent article can be reduced.

According to this absorbent article, it is preferable that the linear compressed portions are arranged in plural, an inner region surrounded by the plural linear compressed portions is provided, and at least one hole portion is provided in one of the inner regions.

In such an absorbent article, the linear compressed portions suppress the diffusion of excrement, and excrement remaining in the inner region is easily moved from the hole portions to the absorbent body.

According to this absorbent article, it is preferable that a plurality of the linear compressed portions and the plurality of the hole portions are arranged, an inner region surrounded by the plurality of the linear compressed portions is provided, the plurality of the hole portions include a 1 st hole portion and a 2 nd hole portion adjacent to each other in the longitudinal direction, and a distance between the 1 st hole portion and the 2 nd hole portion in the longitudinal direction is shorter than a length of the inner region.

In such an absorbent article, the hole portions are easily provided in the inner region, and therefore, the excrement is more easily moved to the absorbent body.

According to this absorbent article, it is desirable that the absorbent article has a plurality of main body compressed portions formed so as to compress the skin side sheet, the intermediate sheet, and the absorbent body in the thickness direction, the hole portion is provided inside a main body compressed region that is a maximum region surrounded by the plurality of main body compressed portions, and is not provided outside the main body compressed region, and the linear compressed portions are provided inside and outside the main body compressed region.

In the absorbent article of this type, the linear compressed portions are provided in a larger area, so that the absorbent article can be easily given a soft impression to the wearer, and the hole portions are provided only inside the compressed area of the main body where the amount of excrement to be absorbed is large, so that the possibility that the absorbent article becomes excessively hard due to the hole portions can be reduced as compared with the case where the hole portions are provided over the entire area of the absorbent main body.

According to this absorbent article, it is preferable that the linear compressed portions are arranged in plural, that an inner region surrounded by the plural linear compressed portions is provided in plural, and that the inner region having no hole portion is provided outside the main body compressed region.

With such an absorbent article, the inner region can easily give the wearer a soft impression of the absorbent article.

According to this absorbent article, it is desirable that the fiber density at an adjacent portion of the skin side sheet adjacent to the hole portion is greater than the fiber density at an outer region of the skin side sheet adjacent to the adjacent portion from the outside.

With such an absorbent article, the adjacent portion having a fiber density higher than that of the outer region is likely to move excrement toward the absorbent body by capillary action.

In the embodiment 1, the following embodiments are not to be considered in all respects

Hereinafter, the embodiments will be described by taking a sanitary napkin as an example of the absorbent article of the present invention, but the present invention is not limited to the sanitary napkin, and any absorbent article may be used as long as it is fixed to the clothing of the user such as a panty liner or incontinence pad.

Basic Structure of sanitary napkin 1

Fig. 1 is a plan view of a sanitary napkin 1 (hereinafter referred to as "sanitary napkin") viewed from the skin side. Fig. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side. Fig. 3 is a schematic sectional view of the sanitary napkin 1 at the line a-a in fig. 1.

The sanitary napkin 1 has a longitudinal direction, a width direction and a thickness direction which are orthogonal to each other. In the longitudinal direction of the sanitary napkin 1, the side that abuts against the lower abdomen of the user is referred to as "front side", and the side that abuts against the buttocks of the user is referred to as "rear side". In the thickness direction of the sanitary napkin 1, the side that contacts the skin of the user is referred to as the "skin side", and the opposite side to the "skin side" is referred to as the "non-skin side". The X-X line in the figure is the center line in the width direction.

The sanitary napkin 1 has a pair of wing portions 1W extending from the central portion in the longitudinal direction to both outer sides in the width direction. Hereinafter, in the longitudinal direction of the sanitary napkin 1, the portion provided with the flap portions 1W is referred to as a central portion 1B, the portion on the front side of the central portion 1B is referred to as a front portion 1A, and the portion on the rear side of the central portion 1B is referred to as a rear portion 1C.

The sanitary napkin 1 has a skin side sheet 2, an intermediate sheet 3, an absorbent body 10, a non-skin side sheet 4, and a side sheet 6 at the center in the width direction. The skin side sheet 2, the intermediate sheet 3, the absorbent body 10, and the non-skin side sheet 4 are stacked in this order from the skin side in the thickness direction, and the side sheet 6 is disposed in a range from the end in the width direction of the skin side surface of the skin side sheet 2 to the end in the width direction of the non-skin side surface of the absorbent body 10. That is, the side sheet 6 is disposed so as to sandwich the

members

2, 3, and 10 in the thickness direction. The side sheet 6 may be formed of a single sheet member as shown in fig. 3, or may have a double-layer structure formed by folding back a single sheet member. The skin side sheet 2, the intermediate sheet 3, the absorbent body 10, the non-skin side sheet 4, and the side sheet 6 are bonded and fixed together using an adhesive such as a hot melt adhesive. The adhesive is applied in any application pattern in the range of each of the skin surface side and the non-skin surface side of each member, and can be selected from application patterns such as an Ω pattern, a spiral pattern, and a stripe pattern. In fig. 3 and the like, the adhesive is omitted for convenience.

The skin side sheet 2 is a liquid-permeable sheet member and is a cotton sheet. The skin side sheet 2 is a portion that directly contacts the skin of the wearer in the worn state. Therefore, the use of cotton as a natural fiber for the skin side sheet 2 can further improve the feel of the skin felt by the wearer. In particular, it is known that the skin of the wearer tends to become sensitive during the physiological period in which the sanitary napkin is worn. In this regard, by using cotton in the skin side sheet 2 of the sanitary napkin 1, it is possible to reduce irritation to the wearer's skin, to easily reduce the possibility of causing itching, rash, etc. of the wearer's skin, to easily give a visually soft impression, and to make the wearer feel a high-quality feeling. In the present embodiment, a sheet member formed of 100% cotton is used, but the present invention is not limited thereto. For example, a mixed sheet of cotton and a through-air nonwoven fabric may be used. However, the greater the proportion of cotton constituting the skin side sheet 2, the more likely the feeling of skin contact with the wearer's skin is improved.

The intermediate sheet 3 is a liquid-permeable sheet member, and examples thereof include a through-air nonwoven fabric and a spunbond nonwoven fabric. The flap 5 and the side sheet 6 are each a hydrophobic sheet member, and examples thereof include a hot air nonwoven fabric and a spunbond nonwoven fabric. The non-skin side sheet 4 is a liquid-impermeable sheet member, and a Polyethylene (PE) resin film or the like can be exemplified. The non-skin side sheet 4 has a planar dimension larger than that of the absorbent body 10, and covers the entire planar surface of the absorbent body 10.

The wing part 1W is formed by a wing 5 and a non-skin side sheet 4 extending outward from both side parts in the width direction of the skin side sheet 2 and the like. Further, the sanitary napkin 1 may be configured without the flap portions 1W.

The absorbent body 10 is a member that absorbs excrement and holds the excrement therein. As shown in fig. 3, the absorbent body 10 has an absorbent core 11 and a cover sheet 12 covering the absorbent core 11. The absorbent core 11 is formed by adding a super absorbent polymer (so-called SAP) or the like as liquid absorbent particulate matter to pulp fibers, cellulose absorbent fibers or the like as liquid absorbent fibers and molding the mixture into a predetermined shape. The cover sheet 12 is a liquid-permeable sheet, and can be exemplified by tissue paper or the like.

The sanitary napkin 1 is provided with a central adhesive portion 8 on the non-skin side (that is, the non-skin side of the non-skin side sheet 4) to which an adhesive or the like is applied. In fig. 2, 11 central adhesive portions 8 in a rectangular shape having a long side in the longitudinal direction are arranged at intervals in the width direction, but the shape, number, and arrangement of the central adhesive portions 8 are not limited thereto. When the sanitary napkin 1 is used, the central adhesive portion 8 is adhered to the skin side surface of a garment such as underwear, thereby fixing the sanitary napkin 1 to the underwear.

Similarly, a flap adhesive portion 9 is provided on the non-skin side surface (non-skin side surface of the non-skin side sheet 4) in the thickness direction of each flap portion 1W. In fig. 2, the flap adhesive portions 9 are arranged such that 4 flap adhesive portions 9 having a rectangular shape with long sides in the longitudinal direction are spaced apart in the width direction, but the shape, number, and arrangement of the flap adhesive portions 9 are not limited thereto. When the sanitary napkin 1 is used, the flap portions 1W are bent toward the non-skin side, and the flap adhesive portions 9 are adhered to the non-skin side surfaces of underwear or the like. Thereby, the wing part 1W is fixed to underwear or the like.

"concerning the linear compression section Es, the main body compression section Eb, and the hole section H

The sanitary napkin 1 has a plurality of linear compressed portions Es, a plurality of main body compressed portions Eb, and a plurality of holes H. As shown in fig. 1 and 4, when the sanitary napkin 1 is viewed from the skin side, the linear compressed portions Es, the main body compressed portions Eb, and the holes H can be visually recognized. Fig. 4 is an enlarged view of the center portion 1B. Fig. 5 is a view illustrating a cross section of a portion shown downward as B-B in fig. 4. Fig. 6A is a view illustrating a cross section of a portion shown downward in C-C in fig. 4, and fig. 6B is a view illustrating a cross section of a portion shown downward in D-D in fig. 4. In fig. 4, both wing portions 1W in the central portion 1B are omitted, and the central portion in the width direction of the sanitary napkin 1 is shown enlarged. For convenience, fig. 5, 6A, and 6B illustrate cross sections of the skin side sheet 2, the intermediate sheet 3, and the absorbent body 10 in each cross section, and the non-skin side sheet 4 and the like are omitted.

The linear compressed parts Es are disposed substantially over the entire region where the skin side sheet 2 and the intermediate sheet 3 overlap. As shown in fig. 3 and 5, the single linear compressed portion Es is a single linear compressed portion formed by performing compression processing only on the skin side sheet 2 and the intermediate sheet 3 in the thickness direction. Specifically, it is a compressed portion having both ends of one end and the other end and having a predetermined length in the longitudinal direction and the width direction, and is a portion that compresses the skin side sheet 2 and the intermediate sheet 3 without compressing the absorbent body 10. With the compression, the fiber density of the skin side sheet 2 and the fiber density of the intermediate sheet 3 are respectively higher than those of the non-compressed portions. The linear compressed portions Es of the sanitary napkin 1 are formed linearly from a collection of circular compressed portions, but are not limited thereto. For example, the linear compression part Es may have a linear compression part. However, by providing the linear compressed parts Es formed by the collection of the circular compressed parts as in the sanitary napkin 1, the possibility that the skin side sheet 2 and the intermediate sheet 3 become excessively hard can be reduced as compared with the linear compressed parts Es formed by the collection of the linear compressed parts, and the feel of the skin when worn can be improved.

The plurality of holes H are arranged in a substantially staggered manner at the center in the longitudinal direction and the center in the width direction of the sanitary napkin 1, and as shown in fig. 3 and 5, the holes H are circular holes in plan view formed by penetrating the skin side sheet 2, the center sheet 3, and the absorbent body 10 from the skin side. The holes H of the sanitary napkin 1 are formed by piercing pins or the like from the skin side into the absorbent body 10, and the size of the holes H is larger than the size of one circular compressed portion constituting the linear compressed portion Es in a plan view. The hole portions H of the sanitary napkin 1 have a depth to the extent of reaching the non-skin side of the absorbent body 10, but are not limited thereto. The depth of the hole H may be set to a depth that penetrates the skin side sheet 2 and the intermediate sheet 3 from the skin side and reaches the absorbent body 10.

The body compressed portion Eb has a shape surrounding a region that is considered to be in contact with the vaginal opening of the wearer in the worn state. As shown in fig. 5, the body compressed portion Eb is a compressed portion formed by compressing the skin side sheet 2, the intermediate sheet 3, and the absorbent body 10 in the thickness direction into a desired shape. With the compression, the fiber density of the skin side sheet 2, the fiber density of the intermediate sheet 3, and the fiber density of the absorbent body 10 are respectively greater than the fiber density of the non-compressed portion.

The linear compression part Es, the main body compression part Eb, and the hole H can be formed as follows. First, the skin side sheet 2 and the intermediate sheet 3 bonded together with the adhesive are passed through a nip between a convex roller (not shown) having a plurality of convex portions and an anvil roller (not shown) having a flat surface, and are subjected to compression processing from the skin side surface of the skin side sheet 2, thereby forming linear compressed portions Es.

Next, the skin side sheet 2 and the intermediate sheet 3 on which the linear compressed portions Es are formed are superposed on the skin side surface of the absorbent body 10, and bonded together with an adhesive so as to pass through a roll gap between a convex roll (not shown) having a plurality of convex portions for forming the hole portions H and the main body compressed portions Eb and an anvil roll (not shown), thereby forming the hole portions H and the main body compressed portions Eb. The convex rollers for forming the hole H and the main body compression portion Eb have pin portions having a pin shape sharper than convex portions of the convex rollers for forming the linear compression portion Es for forming the hole H, and have convex portions having a projection length longer than that of the convex portions of the convex rollers for forming the linear compression portion Es for forming the main body compression portion Es.

Then, the sanitary napkin 1 can be obtained by laminating the non-skin side sheet 4 and the like on the non-skin side of the absorbent body 10. The sanitary napkin 1 may be formed by cutting each member such as the skin side sheet 2 and the intermediate sheet 3 one by one through the above-described processing using a continuous sheet in which a plurality of sheets are continuous. The hole H and the body compression portion Eb need not necessarily be formed simultaneously on the same roller, but may be formed separately.

Conventionally, when the sanitary napkin 1 is made to absorb excrement in a worn state, the skin side sheet 2 using a cotton having high liquid absorbency and moisture retention is intended to absorb more excrement, and therefore the following may occur: the excrement diffuses in the layer of the skin side sheet 2, and hardly reaches the intermediate sheet 3 and the absorbent body 10. Therefore, since the excrement tends to stay on the skin side surface of the sanitary napkin 1, the excrement is likely to be in contact with the skin of the wearer, and the wearer may feel uncomfortable, itchy, or rash.

In this regard, as shown in fig. 5, in the sanitary napkin 1, the linear compressed sections Es are provided, so that the fiber density of the skin side sheet 2 and the intermediate sheet 3 is increased, and the excrement can be easily absorbed in the linear compressed sections Es by capillary action. That is, since the excrement received in the skin side sheet 2 is easily retained by the linear compressed parts Es, the linear compressed parts Es can suppress the excrement from continuously spreading in the layer of the skin side sheet 2. Further, if the linear compressed parts Es suppress the diffusion, the amount of excrement per unit area in the vicinity of the portion where the linear compressed parts Es are provided increases. Since the excrement having a larger amount per unit area enters so as to fall into the holes H, the excrement entering the holes H can be absorbed by the absorbent body 10 before being spread over a wider range of the skin side sheet 2 and the intermediate sheet 3. When the holes H are formed by pins or the like, the skin side sheet 2, the intermediate sheet 3, and the absorbent body 10 around the holes H have higher fiber densities, and therefore the holes H easily absorb excrement due to capillary action. Thus, even when cotton is used for the skin side sheet 2 in order to improve the skin feel or give a visually soft impression, it is possible to reduce the uncomfortable feeling caused by leakage of excrement from the sanitary napkin 1 or continuous contact of excrement with the skin due to the excrement spreading along the surface of the skin side sheet 2.

Further, as shown in fig. 5 and the like, the linear compressed parts Es are concave parts, and therefore, it is easy to move the excrement to the linear compressed parts Es, and the excrement is easily diffused from the skin side sheet 2 to the intermediate sheet 3 in the thickness direction by the higher fiber density of the linear compressed parts Es, and is easily guided to the absorbent body 10. Further, it is also conceivable that when the linear compressed sections Es are formed deeper and compressed into the absorbent body 10, the excrement is more easily diffused in the thickness direction. However, when the linear compressed parts Es are compressed deeply until reaching the absorbent body 10, the absorbent body 10 and the sanitary napkin 1 become hard due to the rigidity of the linear compressed parts Es, and there is a possibility that the feeling of the skin when worn is reduced or a feeling of discomfort is generated when worn. Therefore, the linear compressed portion Es is preferably a compressed portion formed by compressing only the skin side sheet 2 and the intermediate sheet 3.

As shown in fig. 1 and 4, each linear compression part Es is preferably arranged in an inclined shape intersecting with the longitudinal direction and the width direction, respectively. As compared with the case where the excrement is arranged in parallel to the longitudinal direction and the width direction, the possibility that the excrement spreads linearly in the skin side sheet 2 is easily reduced. Further, each linear compression part Es preferably has a curved line. By making the fiber density of the linear compressed parts Es higher, the excrement is easily diffused along the linear compressed parts Es by utilizing the capillary phenomenon, and the possibility that the excrement is linearly diffused is easily reduced. Further, since the linear compression part Es has higher rigidity than a portion where the linear compression part Es is not provided, the possibility of bending from the linear compression part Es as a starting point can be reduced as compared with a case where the linear compression part Es is provided in a straight line.

Preferably, the inner region U is surrounded by the plurality of linear compression sections Es. As shown in fig. 4, the sanitary napkin 1 has a plurality of substantially rhombic inner regions U surrounded on the periphery by four linear compressed parts Es, and the inner regions U have substantially the same shape and substantially the same size. As described above, the linear compressed parts Es are formed in a linear shape by the collection of the plurality of circular compressed parts, and therefore the upper end of the inner region U is the upper end of the circular compressed part located at the most ventral side of the two linear compressed parts Es located on the ventral side, and the lower end of the inner region U is the lower end of the circular compressed part located at the most dorsal side of the two linear compressed parts Es located on the dorsal side. Similarly, one end, for example, the left end in the width direction of the inner region U is the left end of the circular compressed portion located at the leftmost position of the two linear compressed portions Es located on the left side, and the other end, for example, the right end in the width direction of the inner region U is the right end of the circular compressed portion located at the rightmost position of the two linear compressed portions Es located on the right side. The length Lu in the longitudinal direction of the inner region U of the sanitary napkin 1 was 24.3mm, and the length Wu in the width direction was 21.2 mm.

With the inner region U having the linear compressed parts Es on the four sides for suppressing the diffusion of excrement in the plane of the layer of the skin side sheet 2, excrement can be easily left inside the inner region U, and the possibility of excrement diffusing in the plane of the skin side sheet 2 can be easily reduced. Preferably, the central portions of the plurality of inner regions U each have a convex shape protruding toward the skin. Specifically, as shown in fig. 6A and 6B, it is preferable that the center portion in the longitudinal direction and the center portion in the width direction of the inner region U formed by the compression of the skin side sheet 2 and the intermediate sheet 3 are each shaped so as to protrude toward the skin side. When the shape is viewed from the skin side, the wearer is likely to be given a soft-looking impression because the wearer looks like a convex texture.

As shown in fig. 4, it is more preferable that a plurality of inner regions U are provided, each of which is surrounded by linear compressed portions Es having no intersection between the linear compressed portions Es. Specifically, the inner region U of the sanitary napkin 1 is surrounded by four linear compressed portions Es, which do not have intersections with each other. That is, around the inner region U, the linear compressed portions Es and the region where the compressed portions are not formed are provided. For example, regarding the ventral linear compressed portion Esa and the dorsal linear compressed portion Eb that are adjacent in the longitudinal direction among the four linear compressed portions Es constituting one inner region Ua, an uncompressed non-compressed portion N is provided between the dorsal end of the circular compressed portion located at the most dorsal position among the linear compressed portions Esa and the ventral end of the circular compressed portion located at the most ventral position among the linear compressed portions Esb. Similarly, regarding the right linear compressed portion Esb and the left linear compressed portion Esc adjacent in the width direction among the four linear compressed portions Es constituting the inner region Uc provided diagonally below the left of the inner region Ua, an uncompressed non-compressed portion N is provided between the left end of the circular compressed portion located at the leftmost position among the linear compressed portions Esb and the right end of the circular compressed portion located at the rightmost position among the linear compressed portions Esc.

In the skin side sheet 2, the linear compressed parts Es have a higher fiber density than the fiber density of the parts not constituting the linear compressed parts Es. Therefore, although the excrement absorbed in the skin side sheet 2 in the worn state tends to spread first along the linear compressed parts Es, the speed of the excrement spreading can be reduced by providing discontinuous portions of the linear compressed parts Es. That is, by reducing the possibility that excrement continues to spread along the linear compressed portions Es and making it easy for excrement to temporarily remain in the non-compressed portions N, it is possible to easily promote the absorption of excrement in the thickness direction, reducing the possibility that excrement leaks from the outside in the width direction and the outside in the length direction of the sanitary napkin 1. Further, regarding the right linear compressed portion Esb and the left linear compressed portion Esc adjacent in the width direction, which constitute the non-compressed portion N, the distance in the width direction between the left end of the circular compressed portion located at the leftmost position among the linear compressed portions Esb and the right end of the circular compressed portion located at the rightmost position among the linear compressed portions Esc is preferably 1.5mm or more and less than 5.0 mm. In the sanitary napkin 1, this distance is 2.0 mm. When the distance in the width direction between the left end of the circular compressed portion located at the leftmost position in the linear compressed portion Esb and the right end of the circular compressed portion located at the rightmost position in the linear compressed portion Esc is less than 1.5mm, the excrement may spread as in the case where the linear compressed portion Esb and the linear compressed portion Esc are continuous, and the excrement may leak to the outside in the width direction of the sanitary napkin 1. On the other hand, in the case where the distance in the width direction between the left end of the circular compressed portion located at the leftmost position in the linear compressed portion Esb and the right end of the circular compressed portion located at the rightmost position in the linear compressed portion Esc is 5.0mm or more, it is difficult to suppress the spread of excrement in the plane of the layer of the skin side sheet 2.

Preferably, at least one hole H is provided as in the inner region Ua and the inner region Uc of fig. 4. Specifically, the inner region Ua has one hole H, and the inner region Uc has two holes H. By providing the holes H provided inside the inner region U, the excrement remaining inside the inner region U can be dropped from the skin side sheet 2 side to the absorbent body 10 in the thickness direction by the holes H. As a result, the absorbent body 10 can easily absorb excrement.

As shown in fig. 5, in the sanitary napkin 1, when the adjacent portion X adjacent to the hole H is provided and the outer region Y adjacent to the adjacent portion X from the outside is provided, the fiber density of cotton in the adjacent portion X of the skin side sheet 2 is preferably higher than the fiber density of cotton in the outer region Y of the skin side sheet 2 in the skin side sheet 2. Similarly, it is preferable that the nonwoven fabric in the intermediate sheet 3 has a higher fiber density in the adjacent portion X of the intermediate sheet 3 than in the outer region Y of the intermediate sheet 3, and that the liquid-absorbent fiber in the absorbent body 10 has a higher fiber density in the adjacent portion X of the absorbent body 10 than in the outer region Y of the absorbent body 10. The excrement reaching the adjacent portion X is easily diffused toward the non-skin side in the thickness direction by the capillary action of each member having a higher fiber density, and the excrement is easily moved to the absorbent body 10. By forming the holes H by press-fitting with pins or the like, the fiber density of each of the skin side sheet 2, the intermediate sheet 3, and the absorbent body 10 can be increased.

As shown in fig. 4, a distance Lh between hole H1 and hole H2 adjacent in the longitudinal direction is 12.0mm, and preferably, the distance Lh is shorter than a length Lu in the longitudinal direction of inner region U (Lh < Lu). Therefore, in particular, when the holes H are regularly arranged like the sanitary napkin 1, the holes H are easily arranged in the inner region U. Therefore, the excrement remaining in the inner region U is easily moved toward the absorbent body 10. Similarly, a distance Wh between hole H1 and hole H2 adjacent in the width direction is 14.0mm, and more preferably, this distance Wh is shorter than a length Wu of the inner region in the width direction (Wh < Wu).

Preferably, the hole H is provided inside the main body compressed region W, which is the largest region surrounded by the plurality of main body compressed portions Eb, but not outside the main body compressed region. Fig. 7 is a diagram illustrating the body compression region W. In fig. 7, each member of the sanitary napkin 1 is shown by a broken line, and the main body compressed region W is shown by a solid line. As shown in fig. 7, the sanitary napkin 1 is provided with a plurality of body compressed parts Eb symmetrical about the center line X-X, and the body compressed region W is arranged in such a shape as to surround a region which becomes the crotch of the wearer when worn, as the center part in the width direction and the center part in the longitudinal direction of the absorber 10. The plurality of body compression parts Eb are disposed separately from each other, and the largest region among regions surrounded by the body compression parts Eb in a state where the shortest distance between the closest body compression parts Eb is linearly connected is referred to as a body compression region W. In this case, the hole H is provided in the region surrounded by the main body compression region W. On the other hand, the linear compressed parts Es are provided inside and outside the main body compressed region W, and are provided over substantially the entire area of the skin side sheet 2 and the intermediate sheet 3, regardless of the main body compressed part Eb and the main body compressed region W.

Since the linear compressed portions Es can be formed with irregularities on the surface thereof in a convex-like manner, if the linear compressed portions Es are provided in a wider range on the skin side surface of the sanitary napkin 1, the impression of a soft sanitary napkin 1 can be easily given to the wearer. On the other hand, there is a possibility that: when the holes H are provided over the entire area of the absorbent body 10, there is a concern that the wearer may leak from the holes H, or when the holes H are formed by pins or the like, the periphery of the holes H becomes hard, and the entire sanitary napkin 1 becomes too hard. Therefore, by providing the linear compressed portions Es in a wider range, a soft impression is given, and by providing the hole portions H inside the main body compressed region W where the amount of excrement is large, excrement can be easily and reliably absorbed. More preferably, the area of the hole H is smaller than the area of the non-compressed portion N. The holes H can be easily recognized as a part of the pattern of the sanitary napkin 1, and the possibility of giving an impression of whether or not excrement leaks in the vertical direction due to the holes H is reduced. Further, more preferably, when the skin side sheet 2 and the non-skin side sheet 4 are welded together by providing a plurality of welded portions, the area of the hole H is the same as the size of the welded portion between the skin side sheet 2 and the non-skin side sheet 4.

As shown in fig. 1, it is preferable that the inner region Ur not having the hole H is provided outside the main body compression region W. By providing the inner region Ur at a position outside the main body compressed region W, the impression of softness of the sanitary napkin 1 can be easily improved. Further, since the excrement is less absorbed directly from the skin side surface at the outer side of the main body compressed region W, the possibility that the sanitary napkin 1 becomes too hard due to the excessive provision of the holes H can be reduced.

Other embodiments are also possible

While the embodiments of the present invention have been described above, the above embodiments are provided to facilitate understanding of the present invention, and the present invention is not to be interpreted in a limiting manner. It is needless to say that the present invention can be modified and improved without departing from the gist thereof, and the present invention includes equivalents thereof. For example, the following modifications can be made.

In the above-described embodiment, the plurality of linear compression portions Es, the main body compression portion Eb, and the hole portion H are arranged, but not limited thereto. One of the sanitary napkins may be disposed, or the number of the sanitary napkins may be changed as appropriate depending on the degree of the skin feel of the sanitary napkin 1 and the amount of excrement. Similarly, the shapes and sizes of the linear compression part Es, the main body compression part Eb, and the hole H can be appropriately changed. The shape and size of the inner region U can be appropriately changed.

In the above-described embodiment, the absorbent core 11 obtained by molding the liquid absorbent fiber containing the super absorbent polymer is used, but the present invention is not limited thereto. For example, the absorbent core 11 may be a sheet formed of only a high-absorbent polymer, or the absorbent core 11 may be formed of only liquid-absorbent fibers. Further, the absorbent core 11 alone may be used to form the absorbent body 10 without using a cover sheet.

Claims

1. An absorbent article having a longitudinal direction, a width direction and a thickness direction which are orthogonal to each other,

the absorbent article has:

an absorbent body;

a skin side sheet disposed on the skin side of the absorber in the thickness direction; and

an intermediate sheet disposed between the absorber and the skin side sheet in the thickness direction,

the side piece of skin is provided with cotton,

the absorbent article has linear compressed parts and hole parts,

the linear compressed portion is formed so as to compress only the skin side sheet and the intermediate sheet in the thickness direction,

the hole portion penetrates the skin side sheet and the intermediate sheet from the skin side and reaches the absorbent body.

2. The absorbent article according to claim 1,

the linear compressed portion intersects with the longitudinal direction and the width direction, respectively.

3. The absorbent article according to claim 2,

the linear compression portion is curved.

4. The absorbent article according to any one of claims 1 to 3,

a plurality of the linear compressing parts are arranged,

a plurality of inner regions surrounded by the linear compression parts are provided,

each of the plurality of inner regions has a convex shape with a central portion protruding toward the skin side.

5. The absorbent article according to any one of claims 1 to 3,

a plurality of the linear compressing parts are arranged,

a plurality of inner regions surrounded by the linear compression parts without intersection points between the linear compression parts are provided.

6. The absorbent article according to any one of claims 1 to 3,

a plurality of the linear compressing parts are arranged,

an inner area surrounded by the linear compression parts is provided,

at least one of the hole portions is provided in one of the inner side regions.

7. The absorbent article according to any one of claims 1 to 3,

a plurality of linear compression parts and a plurality of hole parts are respectively arranged,

an inner area surrounded by the linear compression parts is provided,

the plurality of hole portions have a 1 st hole portion and a 2 nd hole portion adjacent in the longitudinal direction,

in the direction of the length of the said sheet,

the distance between the 1 st hole and the 2 nd hole is shorter than the length of the inner region.

8. The absorbent article according to any one of claims 1 to 3,

the absorbent article has a plurality of main body compressed parts formed so as to compress the skin side sheet, the intermediate sheet, and the absorbent body in the thickness direction,

the hole is provided inside a main body compression region which is a maximum region surrounded by the plurality of main body compression parts, and is not provided outside the main body compression region,

the linear compression part is provided inside and outside the main body compression region.

9. The absorbent article of claim 8,

a plurality of the linear compressing parts are arranged,

the inner region having no hole is provided outside the main body compression region.

10. The absorbent article according to any one of claims 1 to 3,

the fiber density at an adjacent portion of the skin side sheet adjacent to the hole portion is greater than the fiber density at an outer region of the skin side sheet adjacent to the adjacent portion from the outside.