TW201609061A - Absorbent article - Google Patents

Abstract

An absorbent article that has a length direction, a width direction, and a thickness direction, each of which is perpendicular to the other two. In said absorbent article, a liquid-permeable top sheet, a liquid-permeable second sheet, an absorber, and a liquid-impermeable back sheet are layered together in that order in the thickness direction. Each widthwise side of the absorbent article has a compressed section in which the top sheet, the second sheet, and the absorber are compressed in the thickness direction from the side on which the top sheet is located. This absorbent article is characterized in that: the widthwise edges of the second sheet are folded over such that the second sheet has a pair of double-layer sections on the widthwise edges thereof and a single-layer section in the widthwise middle thereof; and in the lengthwise middle of the absorbent article, at least parts of the double-layer sections of the second sheet are located outwards of the absorber in the width direction.

Description

Absorbent article

This invention relates to absorbent articles.

In the case of an absorbent article, for example, there is absorption between a liquid permeable top sheet and a liquid impervious back sheet. A sanitary napkin for absorbing an absorbent body such as menstrual blood. When the sanitary napkin is attached to the crucible and is subjected to a deformation force from the lateral direction and is deformed into various shapes, there is a problem that the fit is poor and the discomfort is increased. Here, there is proposed a sanitary tampon which is provided on both sides in the wide direction of the absorbent body, and the elastic member is attached from the non-skin side, and the rigidity of both side portions is set to be higher than that of the central portion. It is easy to induce a shape in which the cross-sectional shape of the sanitary napkin is convex toward the skin (see, for example, Patent Document 1).

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent No. 3737251

However, the cross-sectional shape of the sanitary napkin is formed to be convex toward the skin, and when both sides of the sanitary napkin in the width direction are folded down, two of the width directions of the sanitary napkin are used. The side portion cannot block menstrual blood or the like that flows out in the wide direction. Therefore, there is a concern that menstrual blood or the like leaks out from the sanitary napkin.

The present invention has been made in view of the above-described problems, and an object thereof is to provide an absorbent article that suppresses leakage of excrement such as menstrual blood.

The main invention for achieving the above object is an absorbent article having a top surface, a width direction, and a thickness direction which are orthogonal to each other, and a liquid permeable top surface sheet and liquid permeation in the thickness direction. The second sheet, the absorber, and the liquid-impermeable back sheet are formed on both side portions in the wide direction, and the top sheet and the second sheet are compressed from the top sheet side toward the thickness direction. And an absorbent article according to a pair of compression portions of the absorbent body, wherein the second sheet has one end portion located at the both end portions in the width direction by folding back both end portions in the width direction a two-layer portion of the pair; and a layer portion located at a central portion in the width direction, wherein at least a portion of the two-layer portion of the second sheet is positioned further in the center portion in the longitudinal direction than the absorber portion The outside of the wide direction.

With regard to other features of the present invention, the present specification and the accompanying drawings The record can be understood.

According to the present invention, an absorbent article that suppresses leakage of excrement can be provided.

1‧‧‧ (physiological) sanitary napkins (absorbent articles)

1a‧‧‧Long end

1b‧‧‧The central part of the long direction

10‧‧‧ wing

11‧‧‧ Body Department

2‧‧‧ top sheet

3‧‧‧Second sheet

30‧‧‧2

31‧‧1 layer

4‧‧‧Acceptor

5‧‧‧Back sheet

6‧‧‧ joints

7‧‧‧1st compression unit (compression unit)

70‧‧‧low compression department

71‧‧‧High compression department

8‧‧‧2nd compression department

80‧‧‧low compression department

81‧‧‧High compression department

20‧‧‧1st adhesive (adhesive)

21‧‧‧2nd adhesive

Fig. 1 is a schematic plan view of the skin side of the wearer of the sanitary napkin.

Fig. 2 is a schematic plan view showing the non-skin side of the wearer of the sanitary napkin.

3A and 3B are schematic cross-sectional views of the sanitary napkin at the position AA and the position BB of Fig. 1.

Fig. 4A shows a cross-sectional shape of the sanitary napkin in a natural state, and Fig. 4B shows a cross-sectional shape of the sanitary napkin when it is used.

Fig. 5 is a view for explaining the thickness of the sanitary napkin.

Fig. 6 is a view for explaining a modification of the second sheet.

[Formation for carrying out the invention]

At least the following matters can be understood from the description of the present specification and the accompanying drawings.

An absorbent article having a top surface, a width direction, and a thickness direction orthogonal to each other, and sequentially lining a liquid-permeable top surface in the thickness direction a thin sheet, a liquid permeable second sheet, an absorber, and a liquid impermeable back sheet, wherein the top sheet is compressed from the top sheet side toward the thickness direction at both side portions in the wide direction, and the An absorbent article according to a second sheet and a pair of compressed portions of the absorbent body, wherein the second sheet has two ends positioned in the width direction by folding back both end portions in the width direction a two-layer portion of a pair of end portions; and a one-layer portion located at a central portion in the width direction, wherein at least a part of the two-layer portion of the second sheet is larger than a center portion of the longitudinal direction More in the outer side of the aforementioned wide direction.

According to such an absorbent article, both sides in the wide direction in the central portion in the longitudinal direction can be stably and beautifully erected toward the skin side, so that the both sides in the wide direction can be blocked from flowing out in the wide direction. Excrement. On the other hand, in the central portion in the wide direction, since the second sheet is one layer, it is possible to prevent a decrease in liquid permeability and to suppress overflow of excrement from the center portion in the wide direction. Therefore, leakage of excrement from the absorbent article can be suppressed.

In such an absorbent article, the thickness of the portion where the compressed portion is formed is equal to or less than half the maximum thickness of the portion outside the wide portion in the wide direction.

According to such an absorbent article, since both side portions in the wide direction are easily erected toward the skin side, it is possible to more reliably block the excrement flowing out in the wide direction at both side portions in the wide direction.

In such an absorbent article, an adhesive for fixing the absorbent article to the side of the skin of the undergarment is provided on the back sheet The non-skin side surface, the edge of the second sheet in the width direction is located outside the width direction of the region in which the adhesive is provided.

According to such an absorbent article, the movement of the both sides in the wide direction is prevented from being restricted by the underwear, and since both sides in the wide direction are easily erected toward the skin side, it is possible to more surely be both sides in the width direction. Blocks excrement flowing out in the wide direction.

In the absorbent article, the inner edge of the wide direction of the portion where the second sheet is folded back is located further outward than the compressed portion in the center position in the longitudinal direction. The inner edge of the wide direction of the portion where the second sheet is folded back is positioned further inside the width direction than the compressed portion at a position spaced apart from the center in the longitudinal direction.

According to such an absorbent article, the two-layered portion of the second sheet can be raised toward the skin side at the center position in the longitudinal direction while maintaining the state in which the end portion in the width direction of the second sheet is folded back by the compression portion. It is possible to more reliably block the excretion flowing out in the wide direction at both sides in the wide direction.

In the absorbent article, the center position in the longitudinal direction is spaced apart from the center position in the longitudinal direction at a position spaced apart from the longitudinal direction, and the interval between the pair of the compressed portions in the width direction is narrow.

According to such an absorbent article, since the compressed portion easily follows the thigh portion of the wearer and the both side portions in the wide direction are easily erected toward the skin side, it is possible to more reliably block the width toward both sides in the wide direction. Excretion in the direction of the web Things.

In such an absorbent article, the center position in the longitudinal direction is narrower than the position at which the center position in the longitudinal direction is spaced apart from the longitudinal direction.

According to such an absorbent article, since the absorbent body easily follows the thigh portion of the wearer and the both side portions in the wide direction are easily erected toward the skin side, it is possible to more reliably block the width toward both sides in the wide direction. Excreta flowing out in the direction of the web.

In such an absorbent article, the second sheet is folded back to the top sheet side at both end portions in the wide direction.

According to such an absorbent article, since the two layer portions of the second sheet can be swelled toward the skin side, it is possible to more reliably block the excrement flowing out in the wide direction at both side portions in the wide direction.

===General composition of sanitary napkins ===

An embodiment in which a sanitary napkin (hereinafter referred to as a sanitary napkin) is taken as an example of an absorbent article will be described.

FIG. 1 is a schematic plan view of the skin side of the wearer in the sanitary napkin 1. FIG. 2 is a schematic plan view of the non-skin side of the wearer in the sanitary napkin 1. 3A and 3B are schematic cross-sectional views of the sanitary napkin 1 at the position AA and the position BB of Fig. 1. The sanitary napkin 1 has a long direction, a wide direction, and a thickness direction which are orthogonal to each other as illustrated. In addition, the sanitary napkin 1 is a top sheet 2 that is permeable to liquid in the thickness direction from the skin side as shown in FIG. 3, a liquid permeable second sheet 3, an absorber 4, and liquid impermeability. The back Sheet 5. An adhesive (for example, a hot-melt adhesive) (not shown) is applied to the surfaces of the members 2 to 5.

The absorber 4 is used for absorption. Those who retain excretion such as menstrual blood can be composed of, for example, a hydrophilic fiber or a polymer water-absorbent polymer. The planar shape of the absorber 4 of the present embodiment is a gourd shape extending in the longitudinal direction as shown in Fig. 1 . In other words, both end portions 1a in the longitudinal direction have arcs, and the central portion 1b in the longitudinal direction has a shape in which the diameter is reduced in the width direction.

The top sheet 2 (for example, a non-woven fabric, an apertured film, or the like) and the back sheet 5 (for example, a synthetic resin film, a non-woven fabric to which a water repellent treatment is applied, etc.) have the same planar shape and are larger than the absorbent body 4, and are formed. A pair of wing portions 10 projecting from the central portion 1b in the longitudinal direction toward both outer sides in the width direction. In the following description, the portion other than the wing portion 10 is also referred to as the body portion 11 of the sanitary napkin 1. In addition, the sanitary napkin 1 without the wings 10 is also possible. Further, the peripheral portion of the top sheet 2 and the peripheral portion of the back sheet 5 are joined by, for example, hot embossing, an adhesive, or the like, and the joint portion 6 is formed.

The second sheet 3 is formed into a sheet which has liquid permeability and is more elastic than the top sheet 2 and the back sheet 5 in the thickness direction. Therefore, in the second sheet 3, synthetic resin fibers (for example, polyethylene PE, polypropylene PP, polyethylene terephthalate) which are liquid-permeable and easy to impart elasticity and which are easy to manufacture by a relatively inexpensive method are available. A non-woven fabric of ester PET or the like is taken as an example. However, it is not limited thereto, and may be a non-woven fabric of natural fibers (for example, cotton) or recycled fibers (for example, enamel). Further, in the method of manufacturing a non-woven fabric, it is preferably a hot-air type which is liquid-permeable and easy to impart elasticity, and in particular, a hot air type in which a hot air is passed through a fiber deposited on a net to form a sheet. However, the present invention is not limited thereto, and may be other manufacturing methods such as a chemical bonding method and a water needle method. Further, it is preferable that the basis weight of the second sheet 3 is 20 to 40 g/m ² in terms of liquid permeability and elasticity, and the thickness of the second sheet 3 is preferably 1 to 4 mm.

Further, as shown in FIG. 3, the second sheet 3 is folded back to the non-skin side (the side of the absorber 4) at both end portions in the width direction. Specifically, the second sheet 3 is folded back in the thickness direction so as not to overlap the portion of the end portion of the second sheet 3 in the width direction and the portion of the end portion of the other side in the width direction. Both ends of the width direction. Therefore, the second sheet 3 has a pair of two-layer portions 30 positioned at both end portions in the width direction and a one-layer portion 31 positioned at the center portion in the width direction.

Further, the sanitary napkin 1 is formed by, for example, hot embossing, in which the top sheet 2, the second sheet 3, and the absorbent body 4 are compressed from the skin side (the top sheet 2 side) in the thickness direction. Compressed portions (concave portions) 7, 8. The compression unit is a pair of first compression portions 7 (a pair of compression portions) extending in the longitudinal direction, and is provided on both sides in the width direction of the central portion 1b in the longitudinal direction of the sanitary napkin 1. And a second compression portion 8 having a heart shape, which are respectively provided at both end portions 1a of the sanitary napkin 1 in the longitudinal direction. In detail, the first compression portion 7 has an arc portion that is convex toward the inner side in the width direction, and the arc portion thereof is curved along the edge 4a in the width direction of the absorber 4. Further, in the first compression unit 7 and the second compression unit 8, the low compression units 70 and 80 are alternately arranged; The higher pressures of the portions 70, 80 are compressed, and the depths of the recesses are deep, high compression portions 71, 81. Further, the compressed portion may have a groove shape in which the concave portion is continuous, or a plurality of concave portions may be arranged in a line shape at intervals.

Moreover, as shown in FIG. 2, the non-skin side surface of the back sheet 5 is provided with the adhesive agent 20 and 21 (for example, a hot-melt adhesive agent) which can fix the sanitary napkin 1 to a panties, and can isolate the sanitary napkin 1 from a panties. The adhesive agent includes a first adhesive 20 provided on the main body portion 11 of the sanitary napkin 1 and a second adhesive 21 provided on the wing portion 10. The first adhesive 20 is next to the skin side surface of the undergarment, and the second adhesive 21 is attached to the non-skin side surface of the undergarment via the folded wing portion 10. In addition, in FIG. 2, the tape which extended the adhesive agent of the long direction is 10 sheets in the width direction of the 1st adhesive agent 20, and the 1st adhesive agent 21 is provided in the 2nd adhesive agent. The coating mode is not limited to this.

===Leakage inhibition of sanitary napkins ===

4A shows a cross-sectional shape of the sanitary napkin 1 in a natural state, and FIG. 4B shows a cross-sectional shape of the sanitary napkin 1 at the time of attachment. 4A and 4B are cross-sectional views of the central portion 1b in the longitudinal direction of the sanitary napkin 1 in the width direction and the thickness direction. In the sanitary napkin 1 of the present embodiment, as shown in FIG. 1, the length (3b, 3b) in the width direction of the second sheet 3 is longer than the width direction of the absorber 4 in the central portion 1b in the longitudinal direction ( 4a, 4a) formed longer. Further, since the second sheet 3 and the center position of the absorbent body 4 in the width direction coincide with each other, as shown in FIG. 3B, a part of the two-layer portion 30 of the end portion in the width direction of the second sheet 3 is folded back than the absorbent body 4. more Located on the outside of the wide direction.

Here, it is assumed that the length of the second sheet 3 and the absorbent body 4 in the width direction are equal in the central portion 1b of the sanitary napkin 1 in the longitudinal direction, and the second sheet 3 is formed so as not to be in the wide direction from the absorbent body 4. Outer protruding. At this time, the rigidity of both sides in the wide direction of the sanitary napkin 1 (main body portion 11) becomes higher as the rigidity of the central portion in the wide direction. Therefore, when the sanitary napkin 1 is interposed between the wearer's crotch portion and the crotch restraining force of the sanitary napkin 1 is compressed toward the inner side in the wide direction, the both sides of the sanitary napkin 1 in the wide direction are compressed. It will bend toward the skin side or bend toward the non-skin side. That is, the deformation of the sanitary napkin 1 at the time of loading becomes unstable. When the both sides of the sanitary napkin 1 in the wide direction are folded to the non-skin side, the excrement overflowing from the gap between the central portion of the sanitary napkin 1 and the vaginal opening is not present in the central portion in the wide direction. When the excreted matter that has been absorbed by the method flows out in the wide direction, there is a concern that the excrement cannot be blocked on both sides in the wide direction of the sanitary napkin 1, and the excrement leaks from the sanitary napkin 1.

Further, if both end portions of the second sheet 3 in the width direction are not folded back, the second sheet 3 protruding from the absorber 4 toward the outside in the width direction is formed into one layer. Since the second sheet 3 must have a basis weight and a thickness to the extent that it exhibits liquid permeability, the rigidity of both sides in the wide direction of the sanitary napkin 1 is lower than the rigidity of the central portion in the wide direction. . Therefore, when the crotch binding force acts on the sanitary napkin 1, both sides in the wide direction of the sanitary napkin 1 are creased and are bent into various shapes. Therefore, it is not possible to block the excretion flowing to the wide direction in the both sides of the wide direction of the sanitary napkin 1, and there is a possibility that the excrement leaks from the sanitary napkin 1. consider.

On the other hand, in the sanitary napkin 1 of the present embodiment, as described above, a part of the two-layer portion 30 which is folded back at the end portion in the width direction of the second sheet 3 is further positioned in the central portion 1b in the longitudinal direction than the absorbent body 4. On the outside of the wide direction. Therefore, the rigidity of both sides in the wide direction of the sanitary napkin 1 (main body portion 11) is lower than that in the case where the absorbent body 4 is present, but the second sheet 3 protruding from the absorbent body 4 is not one layer. The extent of the time is so low. Therefore, it is possible to prevent the deformation of the sanitary napkin 1 at the time of attachment from becoming unstable, or the both sides in the wide direction of the sanitary napkin 1 being crushed in a wrinkled state. Moreover, as shown in FIG. 4B, both sides of the sanitary napkin 1 in the wide direction can be raised toward the skin side with the first compression portion 7 as a starting point.

In the sanitary napkin 1 of the present embodiment, the rigidity of both end portions in the wide direction is lower than that of the absorber 4, and the both sides in the wide direction are more than the absorbent body 4. Since the second sheet 3 is placed on the skin side, the first compressed portion 7 is provided in the napkin 1 so that both ends of the sanitary napkin 1 in the wide direction can be first in the natural state (Fig. 4A). The compression portion 7 is folded slightly toward the skin side. In particular, when the sanitary napkin 1 of the present embodiment has the wing portion 10, the wing portion 10 is folded back to the undergarment, and the both sides of the body portion 11 of the sanitary napkin 1 in the wide direction are formed in the leg portions of the undergarment. Even in such a case, when the absorbent body 4 is present on both sides of the sanitary napkin 1 in the wide direction, the force to be intimately attached to the leg hole portion of the wearer's underwear is offset by the rigidity of the absorbent body 4, so that the width is wide. It is difficult for both sides in the width direction to rise toward the skin side. However, in the sanitary napkin 1 of the present embodiment, the absorbent body 4 does not exist on both sides in the wide direction. Therefore, the leg portions of the undergarments can contribute to the force that is urged toward the skin side on both sides in the wide direction. Therefore, according to the sanitary napkin 1 of the present embodiment, both sides in the wide direction of the central portion 1b in the longitudinal direction can be stably and erected toward the skin side, and the cross-sectional shape of the sanitary napkin 1 can be made. Change to form a W shape.

In this way, the center portion 1b in the longitudinal direction of the napkin 1 is attached to the periphery of the vaginal opening to form a W-shape, and the sanitary napkin 1 (the main body portion 11) can be widened in the width direction. The central portion is closely attached to the vaginal opening, and the excrement flowing out in the wide direction is blocked on both sides in the wide direction of the sanitary napkin 1. Therefore, leakage of excrement from the sanitary napkin 1 can be suppressed. When the cross-sectional shape of the sanitary napkin 1 is a W-shape, the sanitary napkin 1 can be easily attached to the peripheral portion of the vaginal opening of the labia majora to the groin, and the gap between the wearer and the sanitary napkin 1 is reduced. It is also possible to suppress leakage of excrement from the sanitary napkin 1. Moreover, the improvement of the fit of the sanitary napkin 1 can give the installer a sense of security.

Further, it is assumed that even if the both ends of the second sheet 3 in the width direction are not folded back, for example, the basis weight and thickness of the second sheet 3 are increased, when the crotch binding force acts, the width direction of the sanitary napkin 1 can be prevented. The sides are crumpled and crushed. However, at this time, even in the central portion in the wide direction of the sanitary napkin 1, that is, even at the portion abutting the vaginal opening, the basis weight and thickness of the second sheet 3 become high, from the top sheet 2 toward the absorbent body 4. The liquid permeability is lowered. Similarly, even if the second sheet 3 is a basis weight or thickness which exhibits a degree of liquid permeability, when the portions where the second sheet 3 is folded back overlap each other in the thickness direction, that is, the second sheet 3 does not have the one layer portion 31. When in health The liquid permeability of the central portion of the cotton 1 in the wide direction is lowered. In the present embodiment, the both end portions in the width direction of the second sheet 3 are folded back, and the central portion in the width direction of the second sheet 3 is used as the one-layer portion 31. In this way, the liquid-permeable property of the center portion in the wide direction can be confirmed while the both sides of the sanitary napkin 1 in the wide direction are raised toward the skin side. Therefore, the excrement is prevented from overflowing from the central portion in the wide direction of the sanitary napkin 1, and the leakage of the excrement from the sanitary napkin 1 can be suppressed.

Further, the absorbent body 4 may be wrapped with a liquid-permeable covering material (for example, a tissue sheet or the like), and the length of the covering material in the width direction may be the same as the second sheet in the longitudinal center portion 1b of the sanitary napkin 1. The length of the width direction of 3 is the same. Even in such a case, since the covering material is lower in rigidity than the absorbent body 4, there is no possibility that the both side portions in the wide direction of the sanitary napkin 1 are prevented from rising toward the skin side.

In the sanitary napkin 1 of the present embodiment, as shown in Fig. 1, the edge 4a in the width direction of the absorbent body 4 is convexly curved toward the inner side in the longitudinal direction at the central portion 1b in the longitudinal direction. That is, the width A of the absorbent body 4 is gradually narrowed toward the center position B in the longitudinal direction, and the center position B in the longitudinal direction is spaced apart from the center position B in the longitudinal direction (for example, the position A), the absorber The width of 4 is narrowed. Therefore, the absorber 4 easily follows the thigh of the wearer, and both sides of the sanitary napkin 1 in the wide direction are likely to rise toward the skin side. Further, since the width of the second sheet 3 is constant regardless of the position in the longitudinal direction, the length of the second sheet 3 protruding from the absorbent body 4 in the wide direction can be increased in the central portion 1b in the longitudinal direction. Therefore, the central portion 1b of the long direction of the sanitary napkin 1 that abuts against the periphery of the vaginal opening can be more surely Both sides of the raw cotton 1 in the wide direction stand up toward the skin side, and can block excrement flowing out in the wide direction.

As described above, in the sanitary napkin 1 of the present embodiment, the absorbent body 4 is narrowed in the width direction in the central portion 1b in the longitudinal direction, and the two-layered portion 30 of the second sheet 3 protrudes from the absorbent body 4 in the wide direction. Therefore, the wearer's thigh portion is the second sheet 3 which is lower in surface contact rigidity (roughness) than the absorbent body 4 via the top sheet 2. Further, in the present embodiment, the second sheet 3 is made into a sheet having a relatively high elasticity. Therefore, the cushioning property of the both sides of the sanitary napkin 1 in the wide direction is high, and the restraining force of the crotch portion from the wearer is alleviated by the second sheet 3, and the resistance against the wearer is also weakened. Therefore, according to the sanitary napkin 1 of the present embodiment, even if it is smaller than the adult, the sanitary napkin 1 is not used. Middle school students can also reduce the discomfort during loading when they are used. In other words, even if compared with adults, the width is small and small. When the middle school student is used, since the width of the sanitary napkin 1 can be adjusted by the second sheet 3 protruding from the absorbent body 4 in the wide direction, the discomfort at the time of attachment can be reduced.

Further, there is a case where one surface of the second sheet 3 is more rigid than the other surface. For example, when the second sheet 3 is a hot air type non-woven fabric, the fiber density is higher and the rigidity is higher than the surface of the web which is in contact with the web at the time of manufacture and the surface on the opposite side. When the rigidity of both surfaces of the second sheet 3 is different, as shown in FIG. 3, both ends of the second sheet 3 in the width direction are folded back to the non-skin side with the surface of the second sheet 3 having a high rigidity being inside. The surface having high rigidity is not exposed on the side of the wearer, and only the surface having low rigidity can be directed toward the wearer side. That is, since only the cushioning property of the second sheet 3 can be made high Since it is on the wearer's side, the discomfort during installation can be further reduced.

Further, the second sheet 3 is generally provided to prevent the backflow of the liquid from the absorber 4 or to enhance the concealability of the liquid absorbed by the absorber 4. In such a second sheet 3, the both side portions of the sanitary napkin 1 in the wide direction are raised toward the skin side, or the cushioning property is improved, for example, a new sheet member different from the second sheet 3 is set in the ratio The absorber 4 is located on the outer side in the wide direction, and the structure of the sanitary napkin 1 is simplified and the cost is reduced as compared with the case of the cushioning and the standing.

In the sanitary napkin 1 of the present embodiment, as shown in FIG. 1, the first compressed portion 7 is convex toward the inner side in the width direction along the edge 4a in the width direction of the absorbent body 4 in the central portion 1b in the longitudinal direction. The ground is bent, and the central position B in the longitudinal direction is spaced apart from the longitudinal position (for example, the position A) from the central position B, and the interval between the pair of first compressed portions 7 in the width direction is narrowed. Therefore, the first compression portion 7 as the starting point of the erection tends to follow the thigh portion of the wearer, and both sides of the sanitary napkin 1 in the wide direction are likely to stand up toward the skin side. Moreover, the length of the second sheet 3 protruding from the first compression portion 7 in the wide direction can be increased in the central portion 1b in the longitudinal direction of the sanitary napkin 1. Therefore, the central portion 1b in the longitudinal direction of the napkin 1 that is in contact with the periphery of the vaginal opening can surely raise both sides of the sanitary napkin 1 in the width direction toward the skin side, and since the standing height can be increased, Therefore, the excretion flowing out in the wide direction can be blocked.

Further, the first compression portion 7 is formed to be convexly curved toward the inner side in the width direction, and the width direction of the folded portion of the second sheet 3 is formed. The inner edge 3a (hereinafter referred to as the folded edge 3a) is along the long direction. Therefore, in a predetermined section (between CCs in FIG. 1) including the longitudinal direction of the central position B in the longitudinal direction, as shown in FIG. 3B, the folded edge 3a of the second sheet 3 is positioned wider than the first compressed portion 7. The outer side of the web. On the other hand, at a position (for example, position A) which is spaced apart from the center position B in the longitudinal direction in the longitudinal direction, as shown in FIG. 3A, the folded edge 3a of the second sheet 3 is positioned wider than the first compressed portion 7. The inside of the web.

Therefore, in the predetermined section including the longitudinal direction of the center position B in the longitudinal direction (between CCs in FIG. 1), the two-layer portion 30 of the second sheet 3 is not pressed by the first compressing portion 7 to the absorber 4 Therefore, it is easy to bulge from the absorbent body 4 toward the skin side. In other words, in the portion which is in contact with the periphery of the vaginal opening, the both sides of the sanitary napkin 1 in the wide direction can be raised toward the skin side, so that the excrement flowing out in the wide direction can be more reliably blocked. Moreover, leakage of the excrement from the sanitary napkin 1 can be suppressed by the improvement of the adhesiveness with respect to the peripheral part of the vaginal opening from the labia majora to the groin part. On the other hand, in the position where the distance from the center position B in the longitudinal direction is spaced apart in the longitudinal direction, the second layer portion 30 of the second sheet 3 is integrated with the absorber 4 by the first compressing portion 7, so even the second The sheet 3 is a sheet having a relatively high elasticity, and the state in which both end portions in the wide direction are folded back can be maintained. Further, for example, when the length of the absorbent body 4 in the longitudinal direction is 195 mm, the length in the longitudinal direction of the section (the space between CCs in FIG. 1) in which the folded edge 3a of the second sheet 3 is positioned further than the first compressed portion 7 is provided. 30mm~50mm can be used.

FIG. 5 is a view for explaining the thickness of the sanitary napkin 1. The sanitary napkin 1 of the present embodiment has a portion where the first compression portion 7 is formed in a natural state. The thickness (length in the thickness direction) t1 is equal to or less than half of the maximum thickness t2 of the portion outside the first compression portion 7 in the width direction. Further, in the present embodiment, the first compression portion 7 has the low compression portion 70 and the high compression portion 71, but each of the low compression portion 70 and the high compression portion 71 is wider than the first compression portion 7. The outermost portion of the web direction has a maximum thickness t2 or less. As shown in FIG. 5, since the space on the skin side is formed larger than that of the first compression portion 7, the both sides in the wide direction of the sanitary napkin 1 tend to face the skin side when the crotch binding force acts. Stand up. In other words, since the first compressed portion 7 which is the starting point of the standing is further on the non-skin side, both sides of the sanitary napkin 1 in the wide direction are easily erected toward the skin side. Therefore, it is possible to more reliably block the excrement flowing out in the wide direction.

Further, in the sanitary napkin 1 of the present embodiment, as shown in FIG. 2, the edge 3b in the width direction of the second sheet 3 is larger than the first adhesive 20 applied to the main body portion 11 other than the wing portion 10, that is, The edge 20a in the width direction of the region where the first adhesive 20 (adhesive) which fixes the sanitary napkin 1 to the skin side of the undergarment is positioned outside the width direction. In other words, a part of the region in which the second sheet 3, which functions to raise the both sides of the sanitary napkin 1 in the wide direction, is not fixed to the undergarment, so that the operation is not restricted by the underpants. Therefore, both sides of the sanitary napkin 1 in the wide direction are likely to stand up toward the skin side, and the excrement flowing out in the wide direction can be more reliably blocked.

===Modifications ===

FIG. 6 is a view for explaining a modification of the second sheet 3. In the above embodiment (Fig. 3), the both end portions of the second sheet 3 in the width direction are folded back to the non-skin side, but the present invention is not limited thereto, and as shown in Fig. 6, the width of the second sheet 3 may be Both ends of the direction are folded back to the skin side (the top sheet 2 side). At this time, the folded portion of the second sheet 3 is not pushed to the absorbent body 4, and is easily swelled toward the skin side. Therefore, since both side portions of the sanitary napkin 1 in the wide direction can be raised toward the skin side, it is possible to more reliably block the excrement flowing out in the wide direction. Moreover, leakage of the excrement from the sanitary napkin 1 can be suppressed by the improvement of the adhesiveness with respect to the peripheral part of the vaginal opening from the labia majora to the groin part.

Further, in the above-described embodiment, the first compression portion 7 is curved to protrude inward in the width direction, but is not limited thereto. For example, the first compression portion 7 is along the longitudinal direction, and the positional relationship between the first compression portion 7 and the folded edge 3a of the second sheet 3 is constant regardless of the position in the longitudinal direction.

At this time, when the folded edge 3a of the second sheet 3 is positioned further inward in the width direction than the first compressed portion 7, the thickness of the center portion in the wide direction of the sanitary napkin 1 is increased, and the cushioning property is improved, so the vaginal opening Adjacent adhesion improves the leakage of excreta. Moreover, since the width of the second sheet 3 is large, the manufacturing process of the sanitary napkin 1 can be easily performed.

On the other hand, when the folded edge 3a of the second sheet 3 is located outside the first compressed portion 7 in the wider direction, the thickness of the second sheet 3 in the first compressed portion 7 becomes thinner, so that the sanitary napkin 1 is formed. Both sides of the wide direction are easy to stand up toward the skin side, and the excrement flowing out in the wide direction can be more reliably blocked. Also, since the material width of the second sheet 3 can be narrowed, Cost reduction can be achieved.

Further, in the above embodiment, the planar shape of the absorber 4 is a gourd shape, but is not limited thereto. For example, it may be formed into an hourglass shape, or an elliptical shape or a quadrangular shape in which the center portion in the growth direction is not narrowed. In addition, the thickness of the portion where the first compression portion 7 is formed may be thicker than half of the maximum thickness of the portion of the first compression portion 7 that is located outside the width direction. Further, the edge 20a in the width direction of the first adhesive 20 applied to the back sheet 5 may be aligned with the edge 3b of the second sheet 3 in the width direction or the edge of the second sheet 3 in the width direction. 3b is located on the outside of the wide direction. Further, all of the two layer portions 30 of the second sheet 3 may be positioned further outward than the absorber 4 in the width direction.

Further, in the above embodiment, the sanitary napkin is exemplified as the absorbent article, and is not limited thereto. For example, the present invention is also applicable to other absorbent articles such as disposable disposable diapers, sanitary pads, incontinence pads, and the like.

The above embodiments are intended to facilitate the understanding of the present invention and are not intended to limit the present invention. Further, the present invention may be modified or improved without departing from the scope of the invention, and it is needless to say that the invention also includes equivalents thereof.

1‧‧‧ (physiological) sanitary napkins (absorbent articles)

11‧‧‧ Body Department

4‧‧‧Acceptor

3‧‧‧Second sheet

3b‧‧‧ edge

10‧‧‧ wing

4a‧‧‧ edge

2‧‧‧ top sheet

70‧‧‧low compression department

7‧‧‧1st compression unit (compression unit)

71‧‧‧High compression department

3a‧‧‧return edge

30‧‧‧2

31‧‧1 layer

8‧‧‧2nd compression department

81‧‧‧High compression department

80‧‧‧low compression department

6‧‧‧ joints

1a‧‧‧Long end

1b‧‧‧The central part of the long direction

Claims (7)

An absorbent article having a top surface sheet, a liquid permeable second sheet, an absorbent body, and a liquid permeable top sheet, which are arranged in the longitudinal direction, the width direction, and the thickness direction, and which are sequentially aligned in the thickness direction. In the liquid-impermeable back sheet, a pair of compression portions that compress the pair of top sheet, the second sheet, and the absorber from the top sheet side toward the thickness direction are formed on both side portions in the width direction. In the absorbent article, the second sheet has a pair of two-layer portions located at both end portions in the width direction by folding back both end portions in the width direction; At least one portion of the two-layer portion of the second sheet in the wide direction is located at the center portion in the longitudinal direction at the center portion in the longitudinal direction in the outer side in the width direction. In the absorbent article according to the first aspect of the invention, the thickness of the portion where the compressed portion is formed is equal to or less than half the maximum thickness of the portion outside the wide portion in the wide direction. The absorbent article according to the first or second aspect of the invention, wherein the adhesive agent for fixing the absorbent article to the skin side surface of the undergarment is provided on the non-skin side surface of the back sheet, and the second sheet is The edge of the wide direction is provided with the aforementioned The aforementioned wide-width edge of the region of the agent is located further outside the aforementioned wide direction. The absorbent article according to the first or second aspect of the invention, wherein the inner side edge of the folded portion of the second sheet in the longitudinal direction is higher than the compression portion at a central position in the longitudinal direction Further, in the outer side in the wide direction, at a position spaced apart from the center in the longitudinal direction, the inner side edge of the folded portion of the second sheet in the width direction is larger than the compression portion. More on the inside of the aforementioned wide direction. The absorbent article according to the first or second aspect of the invention, wherein the central portion in the longitudinal direction is spaced apart from the central portion in the longitudinal direction toward the longitudinal direction, and the pair of the compressed portions are The interval in the aforementioned wide direction is narrow. The absorbent article according to the first or second aspect of the invention, wherein the center position in the longitudinal direction is narrower than the position from the center position in the longitudinal direction to the longitudinal direction. . The absorbent article according to claim 1 or 2, wherein the second sheet is folded back to the top sheet side at both end portions in the width direction.