CN111150555B

CN111150555B - Absorbent article

Info

Publication number: CN111150555B
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: 2023-05-09
Anticipated expiration: 2038-11-08
Also published as: CN111150555A; JP2020075085A

Abstract

The present invention relates to an absorbent article. The purpose is to easily suppress the spread of excrement on the surface plane of a skin side sheet and reduce the possibility of leakage of excrement from an absorbent article even when cotton is used for the skin side sheet. An absorbent article (1) comprising an absorber (10), a skin side sheet (2) disposed on the skin side of the absorber (10) in the thickness direction, and an intermediate sheet (3) disposed between the absorber (10) and the skin side sheet (2) in the thickness direction, wherein the skin side sheet (2) comprises cotton, the absorbent article (1) comprises linear compressed sections (Es) and hole sections (H), the linear compressed sections (Es) are formed so as to compress only the skin side sheet (2) and the intermediate sheet (3) in the thickness direction, and the hole sections (H) penetrate the skin side sheet (2) and the intermediate sheet (3) from the skin side and reach the absorber (10).

Description

Absorbent article

Technical Field

The present invention relates to an absorbent article.

Background

As an absorbent article to be used while being fixed to the clothes of a wearer, there are a sanitary napkin, a panty liner and an absorbent pad. As disclosed in patent document 1, it is known to use cotton fibers for the top sheet 11 which is in direct contact with the skin of the wearer to improve the skin feel.

Prior art literature

Patent literature

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 cotton fibers have high liquid absorption and moisture retention properties, the absorbed liquid tends to spread easily in the layer of the top sheet 11, that is, in the sheet layer in contact with the skin of the wearer, and it may be difficult for the absorbed liquid to reach the second sheet 12 and the absorber 13. Therefore, the wearer may be uncomfortable feeling such as stickiness due to the absorbed liquid.

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 spread of excrement on the surface plane of a skin side sheet and reduce the possibility of leakage of excrement from an absorbent article even when a raw material containing cotton is used for the skin side sheet.

Solution for solving the problem

The main means for achieving the above object is an absorbent article comprising a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, the absorbent article comprising: an absorber; a skin side sheet disposed on a 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, wherein the skin side sheet has cotton, and the absorbent article has a linear compression 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 absorber.

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

ADVANTAGEOUS EFFECTS OF INVENTION

With the present invention, even when cotton is used for the skin-side sheet, the spread of excrement on the surface plane 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 seen 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 cross-sectional view of the sanitary napkin 1 shown in A-A in fig. 1.

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

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

Fig. 6A is a view illustrating a section of a portion indicated by C-C in fig. 4 in a downward view. Fig. 6B is a view illustrating a section of a portion shown in D-D in fig. 4 in a downward view.

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

Description of the reference numerals

1. Sanitary napkins (absorbent articles);

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

2. a skin side panel; 3. a middle sheet;

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

6. a side panel;

8. a central adhesive portion; 9. a wing bonding part;

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

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

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

Detailed Description

At least the following matters can be clarified 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 orthogonal to each other, comprising: an absorber; a skin side sheet disposed on a 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, wherein the skin side sheet has cotton, and the absorbent article has a linear compression 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 absorber.

With such an absorbent article, the linear compressed portion having a higher fiber density is used to easily suppress the spread of excrement on the surface plane of the skin side sheet, and the hole portion penetrating from the skin side sheet to the absorber and reaching the absorber is used to easily absorb excrement in the absorber. Therefore, even when cotton that improves the feel of the skin or that is likely to give the wearer a sense of high quality is used for the skin side sheet, it is possible to easily suppress the spread of excrement on the surface plane of the skin side sheet and reduce the possibility of leakage of excrement from the absorbent article.

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

With such an absorbent article, the spread 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.

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

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

In the absorbent article, it is desirable that the linear compressed portions are arranged in plural numbers, and that a plurality of inner regions surrounded by the linear compressed portions are provided, and that the plurality of inner regions each have a convex shape with a central portion protruding toward the skin side.

With such an absorbent article, the wearer is easily given the impression of softness of the absorbent article by the plurality of projections.

According to the absorbent article, it is desirable that the plurality of linear compressed portions be arranged, and that a plurality of inner regions be provided, which are surrounded by the linear compressed portions having no intersection point between the linear compressed portions.

With such an absorbent article, the possibility of excrement leaking from the outside in the longitudinal direction and the width direction of the absorbent article by spreading along the continuous linear compressed portion can be reduced.

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

With such an absorbent article, the linear compressed portion suppresses the spread of the excrement, and the excrement left in the inner region is easily moved from the hole portion to the absorbent body.

According to this absorbent article, it is desirable that the linear compressed portions and the hole portions are each provided in plural, and an inner region surrounded by the plural linear compressed portions is provided, and the plural hole portions have a 1 st hole portion and a 2 nd hole portion adjacent 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, since the hole is easily provided in the inner region, the excrement is more easily moved toward the absorbent body.

According to the 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 absorber in the thickness direction, the hole portion is provided inside a main body compressed region which is a maximum region surrounded by the plurality of main body compressed portions, the hole portion is not provided outside the main body compressed region, and the linear compressed portions are provided inside and outside the main body compressed region.

With such an absorbent article, by providing the linear compressed portion in a larger area, it is easy to give the wearer the impression of softness to the absorbent article, and by providing the hole portion only inside the main body compressed area where the amount of excrement is large, the possibility of the absorbent article becoming excessively stiff due to the hole portion can be reduced as compared with the case where the hole portion is provided in the entire area of the absorbent main body.

According to the absorbent article, it is desirable that the plurality of linear compressed portions are arranged, that a plurality of inner regions surrounded by the plurality of linear compressed portions are provided, and that the inner regions having no hole portions are provided outside the main body compressed region.

With such an absorbent article, the wearer is easily given a soft impression by the inner region.

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

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

= = 1 st embodiment= = = =1 st embodiment

Hereinafter, the absorbent article of the present invention is exemplified by a sanitary napkin, but the present invention is not limited to the sanitary napkin, and may be any absorbent article that is used while being fixed to the clothing of a user, such as a pad or a light incontinence pad.

Basic structure of sanitary towel 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 cross-sectional view of the sanitary napkin 1 at 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 contacts the lower abdomen of the user is referred to as the "front side", and the side that contacts the buttocks of the user is referred to as the "rear side". In the thickness direction of the sanitary napkin 1, the side that contacts the skin of the user is referred to as "skin side", and the opposite side of the "skin side" is referred to as "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 a 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 wing portion 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 side portion 1A, and the portion on the rear side of the central portion 1B is referred to as a rear side portion 1C.

The sanitary napkin 1 further includes a skin side sheet 2, an intermediate sheet 3, an absorber 10, a non-skin side sheet 4, and a side sheet 6 at the widthwise center thereof. The skin side sheet 2, the intermediate sheet 3, the absorber 10, and the non-skin side sheet 4 are laminated in this order from the skin side in the thickness direction, and the side sheet 6 is disposed in a range from an end in the width direction of the skin side surface of the skin side sheet 2 to an end in the width direction of the non-skin side surface of the absorber 10. That is, the side sheet 6 is arranged so as to sandwich the

respective members

2, 3, 10 in the thickness direction. The side sheet 6 may be formed of one sheet member as shown in fig. 3, or may have a double-layer structure in which one sheet member is folded back. The skin side sheet 2, the intermediate sheet 3, the absorber 10, the non-skin side sheet 4, and the side sheet 6 are bonded and fixed together by an adhesive such as a hot melt adhesive. The adhesive is applied in an arbitrary application pattern within a 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, an 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, by using cotton as natural fibers for the skin side sheet 2, the skin feel felt by the wearer can be further improved. In particular, it is known that the skin of the wearer easily becomes sensitive during the physiological phase of wearing a sanitary napkin. In this regard, by using cotton for the skin side sheet 2 of the sanitary napkin 1, the skin irritation to the wearer can be reduced, the possibility of causing itching, rash, etc. of the wearer's skin can be easily reduced, or a soft-looking impression can be easily visually imparted, and the wearer can actually feel a sense of high-grade. 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 hot air nonwoven fabric may be used. The more the proportion of cotton constituting the skin side sheet 2 is, the more easily the skin feel in contact with the skin of the wearer is improved.

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

The wing portion 1W is formed of a wing 5 extending outward from both side portions in the width direction of the skin-side sheet 2 and the like, and a non-skin-side sheet 4. The sanitary napkin 1 may not have the wing portions 1W.

The absorber 10 is a member that absorbs and retains excrement. 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 tissue paper and the like can be exemplified.

The non-skin side surface (that is, the non-skin side surface of the non-skin side sheet 4) of the sanitary napkin 1 is provided with a central adhesive portion 8 coated with an adhesive or the like. In fig. 2, 11 central adhesive portions 8 having a rectangular shape with long sides in the longitudinal direction are arranged at intervals in the width direction in the central adhesive portion 8, but the shape, number, and arrangement of the central adhesive portions 8 are not limited thereto. The sanitary napkin 1 is fixed to underpants or the like by adhering the central adhesive portion 8 to the skin side surface of clothing such as underpants or the like when the sanitary napkin 1 is used.

Similarly, the wing pressure-sensitive adhesive portion 9 is provided on the non-skin side surface (non-skin side surface of the non-skin side sheet 4) of each wing portion 1W in the thickness direction. In fig. 2, 4 wing bonding portions 9 having a rectangular shape with long sides in the longitudinal direction are arranged at intervals in the width direction in the wing bonding portions 9, but the shape, number, and arrangement of the wing bonding portions 9 are not limited thereto. When the sanitary napkin 1 is used, the wing portions 1W are folded toward the non-skin side, and the wing adhesive portions 9 are adhered to the non-skin side surface of underpants or the like. Thereby, the wing portions 1W are fixed to underpants or the like.

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

The plurality of linear compressed portions Es are disposed in substantially 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 subjecting only the skin side sheet 2 and the intermediate sheet 3 to compression processing in the thickness direction. Specifically, the compression portion having one end and the other end and having a predetermined length in the longitudinal direction and the width direction is a portion that compresses the skin-side sheet 2 and the intermediate sheet 3 without compressing the absorbent body 10. With 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 portion where compression is not performed. The linear compressed portion Es of the sanitary napkin 1 is formed in a linear shape by a collection of circular compressed portions, but is not limited thereto. For example, the linear compressed portion Es may be a linear compressed portion. By providing the linear compressed parts Es formed by the collection of circular compressed parts as in the sanitary napkin 1, the possibility of excessive stiffening of the skin side sheet 2 and the intermediate sheet 3 can be reduced and the skin feel can be improved when worn, as compared with the linear compressed parts Es formed by the collection of linear compressed parts.

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

The main body compressed portion Eb is formed to surround a region which is considered to be in contact with the vaginal opening of the wearer in the worn state. As shown in fig. 5, the main body compressed portion Eb is a compressed portion formed by subjecting the skin side sheet 2, the intermediate sheet 3, and the absorber 10 to compression processing in the thickness direction to have a desired shape. With compression, the fiber density of the skin-side sheet 2 and the fiber density of the intermediate sheet 3 are respectively greater than those of the uncompressed portion.

The linear compressed portion Es, the main body compressed portion Eb, and the hole H can be formed as follows. First, the skin-side sheet 2 and the intermediate sheet 3 bonded together with an adhesive are compressed from the skin side surface of the skin-side sheet 2 through a roll gap between a convex roll (not shown) having a plurality of convex portions and an anvil roll (not shown) having a flat surface, 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 overlapped on the skin side surface of the absorbent body 10, and are bonded with an adhesive so as to pass through a roller gap between a convex roller (not shown) having a plurality of convex portions for forming the hole portion H and the main body compressed portion Eb and an anvil roller (not shown), thereby forming the hole portion H and the main body compressed portion Eb. The convex roller for forming the hole portion H and the main body compressed portion Eb has a pin portion in a pin shape sharper than the convex portion of the convex roller for forming the linear compressed portion Es in order to form the hole portion H, and has a convex portion in a protrusion length longer than the protrusion length of the convex portion of the convex roller for forming the linear compressed portion Es in order to form the main body compressed portion Es.

Thereafter, the non-skin side sheet 4 or the like is laminated on the non-skin side of the absorbent body 10, whereby the sanitary napkin 1 can be obtained. The members such as the skin side sheet 2 and the intermediate sheet 3 may be continuous sheets obtained by continuously using a plurality of sheets, and the sanitary napkin 1 may be formed by cutting one by one through the above-described processing. The hole H and the main body compressing portion Eb need not necessarily be formed at the same time 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 cotton having high liquid absorption and moisture retention properties is intended to absorb more excrement, and therefore, there are cases in which: the excrement diffuses in the layer of the skin side sheet 2, and the excrement hardly reaches the intermediate sheet 3 and the absorber 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 there is a possibility that discomfort, itching, and rash are likely to be felt.

In this regard, as shown in fig. 5, by providing the linear compressed parts Es in the sanitary napkin 1, the fiber density of the skin-side sheet 2 and the intermediate sheet 3 is made higher, and thus the waste can be easily absorbed in the linear compressed parts Es by utilizing capillary phenomenon. That is, since the excrement received in the skin side sheet 2 is easily retained by the linear compressed portions Es, the linear compressed portions Es can suppress continuous diffusion of the excrement in the layer of the skin side sheet 2. Further, when the linear compressed parts Es are used to suppress the diffusion, the amount of excrement per unit area in the vicinity of the portion where the linear compressed parts Es are provided becomes large. Since the excrement having increased amount per unit area enters the hole H, the excrement entering the hole H can be absorbed by the absorber 10 before being spread over a wide range of the skin side sheet 2 and the middle sheet 3. When the hole H is formed by a pin or the like, the fiber density of each of the skin-side sheet 2, the intermediate sheet 3, and the absorber 10 around the hole H becomes higher, and thus the hole H is liable to absorb excrement due to capillary phenomenon. Thus, even when cotton is used for the skin side sheet 2 in order to improve the feel of the skin or to give the visual impression of softness, the uncomfortable feeling caused by the leakage of excrement from the sanitary napkin 1 due to the diffusion of excrement along the surface of the skin side sheet 2 or the continuous contact of excrement with the skin can be reduced.

Further, as shown in fig. 5 and the like, since the linear compressed parts Es are concave parts, the excrement is easily moved 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 absorber 10. Further, it is also conceivable that the linear compressed parts Es are formed deeper and compressed to the absorbent body 10, so that the excrement is more likely to spread in the thickness direction. However, if the linear compressed parts Es are compressed deeply until reaching the absorbent body 10, the absorbent body 10 and the sanitary napkin 1 become rigid due to the rigidity of the linear compressed parts Es, and there is a possibility that the skin touch feeling during wearing is lowered or a sense of discomfort is generated during wearing. 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 compressed portion Es is preferably arranged in an inclined shape intersecting the longitudinal direction and the width direction. The possibility of the excrement spreading linearly on the skin side sheet 2 is easily reduced as compared with the case of being arranged parallel to the longitudinal direction and the width direction, respectively. Further, each linear compressed portion Es is preferably curved. By increasing the fiber density of the linear compressed parts Es, the capillary phenomenon is utilized to facilitate the diffusion of excrement along the linear compressed parts Es, and the possibility of the excrement being linearly diffused is easily reduced. Further, since the linear compressed portions Es have higher rigidity than portions where the linear compressed portions Es are not provided, the possibility of bending from the linear compressed portions Es can be reduced as compared with the case where the linear compressed portions Es are provided in a straight line.

Preferably, the inner region U surrounded by the plurality of linear compressed portions Es is provided. As shown in fig. 4, the sanitary napkin 1 has a plurality of substantially diamond-shaped inner regions U surrounded by four linear compressed portions Es, and the inner regions U have substantially the same shape and substantially the same size. As described above, the linear compressed portion Es is formed in a linear shape by a collection of a plurality of circular compressed portions, and therefore the upper end of the inner region U is the upper end of the circular compressed portion located at the most ventral position among the two linear compressed portions Es located on the ventral side, and the lower end of the inner region U is the lower end of the circular compressed portion located at the most dorsal position among the two linear compressed portions Es located on the dorsal side. Similarly, one end, for example, the left end, of the inner region U in the width direction is the left end of the circular compression portion located at the leftmost position among the two linear compression portions Es located at the left side, and the other end, for example, the right end, of the inner region U in the width direction is the right end of the circular compression portion located at the rightmost position among the two linear compression portions Es located at 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 21.2mm.

By the inner region U having the linear compressed parts Es around the periphery for suppressing the spread of the excrement on the plane of the layer of the skin side sheet 2, the excrement is easily left inside the inner region U, and the possibility of the excrement spreading on the plane of the skin side sheet 2 is easily reduced. Further, it is preferable that the central portions of the plurality of inner areas U each have a convex shape protruding toward the skin side. Specifically, as shown in fig. 6A and 6B, it is preferable that the central portion in the longitudinal direction and the central 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 have a shape protruding toward the skin side, respectively. When the shape is visually recognized from the skin side, the shape looks like a raised pattern, and thus a soft-looking impression is easily given to the wearer.

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

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

Preferably, at least one hole H is provided like the inner areas Ua and Uc in fig. 4. Specifically, the inner region Ua has one hole H, and the inner region Uc has two holes H. By providing the hole H provided inside the inner region U, the excrement left inside the inner region U can be brought into a state of falling down from the skin side sheet 2 side to the absorber 10 in the thickness direction by the hole H. As a result, the absorber 10 is easy to absorb excrement.

As shown in fig. 5, in the sanitary napkin 1, when the adjacent portion X adjacent to the hole portion H is provided and the outer region Y adjacent to the adjacent portion X from the outside is provided, it is preferable that the fiber density of cotton at the adjacent portion X of the skin side sheet 2 is higher than that of cotton at the outer region Y of the skin side sheet 2 in the skin side sheet 2. Similarly, in the intermediate sheet 3, the fiber density of the nonwoven fabric at the adjacent portion X of the intermediate sheet 3 is preferably higher than the fiber density of the nonwoven fabric at the outer region Y of the intermediate sheet 3, and in the absorbent body 10, the fiber density of the liquid-absorbent fibers at the adjacent portion X of the absorbent body 10 is preferably higher than the fiber density of the liquid-absorbent fibers at 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 phenomenon of each member having a higher fiber density, and is easily moved to the absorbent body 10. By forming the hole H by press-fitting with a pin or the like, the fiber density of each of the skin-side sheet 2, the intermediate sheet 3, and the absorber 10 can be increased.

As shown in fig. 4, the distance Lh between the hole H1 and the hole H2 adjacent to each other in the longitudinal direction is 12.0mm, and is preferably shorter than the length Lu in the longitudinal direction of the 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 left in the inner region U is easily moved toward the absorbent body 10. Similarly, the distance Wh between the hole H1 and the hole H2 adjacent to each other in the width direction is 14.0mm, and more preferably, the distance Wh is shorter than the length Wu in the width direction of the inner region (Wh < Wu).

Further, the hole H is preferably provided inside the main body compression region W, which is the largest region surrounded by the plurality of main body compression portions Eb, and is not provided outside the main body compression region. Fig. 7 is a diagram illustrating the main body compression region W. In fig. 7, the respective members of the sanitary napkin 1 are indicated by broken lines, and the main body compression region W is indicated by solid lines. As shown in fig. 7, the sanitary napkin 1 is provided with a plurality of main body compressed portions Eb symmetrical about the center line X-X, and the main body compressed region W is arranged in such a shape as to surround a region which is a widthwise central portion and a lengthwise central portion of the absorbent body 10 and becomes a crotch of a wearer when worn. The plurality of main body compressed portions Eb are arranged separately, and the largest region among the regions surrounded by the main body compressed portions Eb in a state where the main body compressed portions Eb closest to each other are connected in a straight line at the shortest distance therebetween is referred to as a main body compressed region W. At this time, the hole H is provided in the region surrounded by the main body compression region W. On the other hand, the linear compressed portions Es are provided on the inner side and the outer side of the main body compressed region W, and the linear compressed portions Es are provided on substantially the entire regions of the skin side sheet 2 and the intermediate sheet 3 irrespective of the main body compressed portion Eb and the main body compressed region W.

Since the linear compressed parts Es can be formed with irregularities on the surface like a convex pattern, providing the linear compressed parts Es over a wider range of the skin side surface of the sanitary napkin 1 tends to give the wearer the impression of a soft sanitary napkin 1. On the other hand, there is a possibility that: when the hole H is provided in the entire region of the absorbent body 10, there is a fear that the wearer may leak from the hole H or if the hole H is formed by a pin or the like, the periphery of the hole H becomes hard, and the entire sanitary napkin 1 becomes excessively hard. Therefore, by providing the linear compressed portion Es in a larger range, a soft impression is given, and the hole portion H is provided inside the main body compressed region W in which the amount of excrement is large, so that excrement can be easily and reliably absorbed. Further, it is more preferable that the area of the hole H is smaller than the area of the non-compressed portion N. The hole H can be easily visually recognized as a part of the design of the sanitary napkin 1, and the possibility of giving the impression of whether excrement will leak in the vertical direction by the hole H can be reduced. In addition, 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 of the skin-side sheet 2 and the non-skin-side sheet 4.

As shown in fig. 1, the inner region Ur having no hole H is preferably provided outside the main body compression region W. By providing the inner region Ur outside the main body compressed region W, the soft impression of the sanitary napkin 1 can be easily enhanced. Further, since the excrement is less likely to be absorbed directly from the skin side surface than the main body compression region W, the sanitary napkin 1 can be less likely to become excessively stiff due to the excessive provision of the hole H.

= = other embodiments= = = =

The embodiments of the present invention have been described above, but the embodiments are made to facilitate understanding of the present invention, and are not intended to limit the present invention. It is needless to say that the present invention can be modified and improved without departing from the spirit thereof, and equivalents thereof are included in the present invention. For example, the following modifications are possible.

In the above embodiment, the plurality of linear compressed portions Es, the main body compressed portion Eb, and the hole portion H are arranged, respectively, but the present invention is not limited thereto. The number of the sanitary napkins 1 may be one, or may be changed as appropriate according to the degree of skin touch and the amount of excrement. Similarly, the shape and size of the linear compressed portion Es, the main body compressed portion Eb, and the hole H can be appropriately changed. The shape and size of the inner region U can be changed as appropriate.

In the above-described embodiment, the absorbent core 11 obtained by molding the liquid-absorbent fibers to which the superabsorbent polymer is added is used, but is not limited thereto. For example, the absorbent core 11 may be a sheet formed of only a superabsorbent polymer, or the absorbent core 11 may be formed of only a liquid absorbent fiber. In addition, the cover sheet does not have to be used, and the absorbent body 10 may be formed only by the absorbent core 11.

Claims

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

the absorbent article comprises:

an absorber;

a skin side sheet disposed on a 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, characterized in that,

the skin side panels are provided with cotton,

the absorbent article has a linear compression portion and a hole portion,

the linear compression 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 non-skin side surface of the absorber,

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

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

the linear compression parts are arranged on the inner side and the outer side of the main body compression area,

the linear compressing portion is provided in plurality,

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

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

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

the absorbent article comprises:

an absorber;

the skin side panels are provided with cotton,

the absorbent article has a linear compression portion and a hole portion,

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

3. The absorbent article as claimed in claim 1 or 2, characterized in that,

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

4. The absorbent article as set forth in claim 3 wherein,

the linear compression portion is curved.

5. The absorbent article as claimed in claim 1 or 2, characterized in that,

the linear compressing portion is provided in plurality,

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

6. The absorbent article as claimed in claim 1 or 2, characterized in that,

the linear compressing portion is provided in plurality,

an inner region surrounded by the linear compressed portions having no intersection point between the linear compressed portions is provided.

7. The absorbent article as claimed in claim 1 or 2, characterized in that,

the linear compressing portion is provided in plurality,

an inner region surrounded by a plurality of the linear compressed portions is provided,

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

8. The absorbent article as claimed in claim 1 or 2, characterized in that,

the linear compression portion and the hole are respectively provided with a plurality of linear compression portions,

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

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