JP7246401B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles.

2. Description of the Related Art Absorbent articles are known that include a warming part having a warming agent that causes a wearer of the absorbent article to perceive warmth through the skin. For example, U.S. Pat. No. 6,200,000 discloses an absorbent article in which one or more portions incorporate agents capable of conveying sensations to the wearer without the need to create an external condition to be perceived by the wearer. Patent Document 1 mentions cooling agents (cooling agents) and warming agents (warming agents) as agents.

Japanese Patent Publication No. 2004-528090

In an absorbent article in which a warming agent is arranged as in Patent Document 1, even if the warming agent reaches the wearer's skin and the wearer perceives warmth, excrement (example: urine, menstrual blood) may adhere to the skin, or the absorbent body whose temperature has been lowered by absorbing excrement may come into contact with the skin via a surface sheet or the like. In that case, the excrement makes it difficult for the warming agent to reach the skin, or the skin is cooled by the absorber whose temperature has decreased, making it difficult for the wearer to continue to perceive the warmth of the warming agent. There is a risk. Therefore, absorbent articles such as those disclosed in Patent Document 1 have room for improvement in terms of durability of warmth that the wearer continues to perceive warmth.

Accordingly, an object of the present invention is to provide an absorbent article having a warm-sensing portion, which has an effect that the wearer can perceive warmth continuously, that is, an absorbent article capable of improving the durability of the warm sensation. That's what it is.

The absorbent article of the present invention has a longitudinal direction, a width direction and a thickness direction. An absorbent article comprising: a first sheet member having permeability; and a second sheet member overlapping with the absorbent body in the thickness direction, positioned on the non-skin side of the absorbent body, and having liquid impermeability. At least one of the absorbent body and the first sheet member includes a warming part containing a warming agent, and the first sheet member has a skin side in a region overlapping the warming part in a plan view. a plurality of sheet member recesses that are recessed from the surface of the absorbent body toward the surface on the non-skin side, and the absorber is located in a region that overlaps with the warmth sensing portion in a plan view at a position different from the plurality of sheet member recesses, An absorbent article comprising a plurality of absorbent body recesses recessed from a skin-side surface toward a non-skin-side surface, wherein the second sheet member is non-breathable.

ADVANTAGE OF THE INVENTION According to the present invention, in an absorbent article having a warm-sensing portion, it is possible to provide an absorbent article that has an effect of enabling a wearer to perceive warmth continuously, that is, an absorbent article that can improve the durability of the warm sensation.

1 is a plan view showing a configuration example of a sanitary napkin according to an embodiment; FIG. 2 is a cross-sectional view along the longitudinal centerline in FIG. 1; FIG. It is a bottom view showing a configuration example of the sanitary napkin according to the embodiment. 1 is a plan view showing a configuration example of a liquid-permeable sheet according to an embodiment; FIG. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4; It is a top view showing an example of composition of an absorber concerning an embodiment. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6; FIG. 4 is a schematic diagram showing the arrangement of a warming agent in the absorbent body according to the embodiment; FIG. 4 is a schematic diagram showing the arrangement of a warming agent in the liquid-permeable sheet according to the embodiment; FIG. 4 is a cross-sectional view along the widthwise center line of a sanitary napkin according to another embodiment. FIG. 5 is a cross-sectional view along the widthwise center line of a sanitary napkin according to still another embodiment.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A liquid-permeable first sheet member having a longitudinal direction, a width direction, and a thickness direction, overlapping with an absorbent body in the thickness direction, positioned closer to the skin than the absorbent body, and having liquid permeability. and a liquid-impermeable second sheet member that overlaps the absorbent body in the thickness direction, is located on the non-skin side of the absorbent body, and has liquid impermeability, wherein the absorbent body and At least one of the first sheet members includes a warming portion containing a warming agent, and the first sheet member has a skin-side surface to a non-skin-side surface in a region overlapping with the warming portion in plan view. The absorbent body includes a plurality of recessed portions of the sheet member that are recessed toward the skin, and the absorbent body is located at a position different from the plurality of recessed portions of the sheet member in a region that overlaps the warming portion in a plan view, and extends from the surface of the skin side to the non-skin side. wherein said second sheet member is non-breathable.

In this absorbent article, when worn by the wearer, the warming agent in at least one of the absorbent body and the first sheet member provides a warming effect that allows the wearer to perceive warmth. At that time, since the first sheet member includes a plurality of sheet member recesses, at least part of the air warmed by the effect of warming can be held in the recesses of the plurality of sheet member recesses. Furthermore, since the absorbent body includes a plurality of absorbent body recesses, at least part of the air warmed by the effect of warmth can be held in the depressions of the plurality of absorbent body recesses. Here, since the positions of the sheet member recessed portions and the absorber recessed portions are shifted from each other, a large amount of warmed air can be retained by combining a plurality of sheet member recessed portions and a plurality of absorber recessed portions. The second sheet member, which is located on the non-skin side of the absorber and the first sheet member and is non-breathable, can substantially confine the retained air on the skin side so as not to flow outward. . As a result, in addition to obtaining a warming effect from the warming agent, the warmed air keeps the skin warm even when it is difficult for the warming agent to reach the skin due to excrement or when the temperature of the absorbent body drops. It is possible to obtain the effect of warmth. As a result, it is possible to improve the durability of the warm feeling.

[Aspect 2]
The absorbent body has an excretion opening contact area that is an area that contacts the wearer's excretory opening and a non-excretion opening contact area that is an area other than the excretory opening contact area. The absorbent article according to aspect 1, wherein the density of the number of arrangement of the absorbent body recesses in the contact area is higher than the density of the number of the arrangement of the absorbent body recesses in the non-excretion opening contact area.
In the present absorbent article, the number density of arrangement of absorbent body recesses in the excretion opening contacting area is higher than the arrangement number density of absorbent body recesses in the non-excretion opening contacting area. Therefore, when the absorbent article is worn by the wearer, more warm air can be retained in the excretory opening contact area. Therefore, the skin in the vicinity of the excretory opening, which is sensitive and sensitive to temperature changes, can be warmed and kept warm continuously. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 3]
The absorbent article according to aspect 1 or 2, wherein the thickness of the central portion in the width direction of the absorbent body is thinner than the thickness of both end portions of the absorbent body in the width direction.
In this absorbent article, the thickness of the central portion in the width direction of the absorbent body is made thinner than the thickness of both end portions located on both sides of the central portion. Therefore, when the absorbent article is worn by the wearer and both ends of the absorbent body (through the sheet member) come into contact with the skin in the width direction, a slight gap is created between the central part of the absorbent body and the skin. can be made easier. Then, the warmed air can be further retained in the gap. Therefore, the skin in the vicinity of the excretory opening, which is sensitive and susceptible to temperature changes, which the central portion of the absorbent body may come into contact with, can be kept warmer and longer. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 4]
The first sheet member includes a top sheet and a liquid diffusion sheet in contact with the non-skin side of the top sheet, and each of the plurality of sheet member recesses is formed by the top sheet and the liquid diffusion sheet. According to any one of aspects 1 to 3, including a pressed portion formed by pressing from the skin side surface of the surface sheet toward the non-skin side surface of the liquid diffusion sheet so as to integrate the absorbent article.
In the present absorbent article, the sheet member concave portion includes a pressed portion that integrates the surface sheet and the liquid diffusion sheet that are in contact with each other. In other words, the surface sheet and the liquid diffusion sheet are bonded to each other at a plurality of compressed portions, but are not bonded at locations other than the compressed portions. Therefore, when the absorbent article is worn by the wearer, the surface sheet and the liquid diffusion sheet are spaced apart from each other in the thickness direction between the adjacent compressed portions (not the closest ones), and a slight gap is likely to occur. can do. Then, the warmed air can be further retained in the gap. Therefore, it is possible to keep the skin warm with warmed air not only in the plurality of recesses of the sheet member but also in the gaps between them. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 5]
The first sheet member includes a top sheet made of nonwoven fabric, and an auxiliary sheet made of nonwoven fabric that is in contact with the non-skin side of the top sheet, and the fiber density of the top sheet is the same as the auxiliary sheet. 5. The absorbent article according to any one of aspects 1 to 4, wherein the fiber density is lower than the fiber density of
In this absorbent article, the fiber density of the topsheet is lower than that of the auxiliary sheet in contact with the non-skin side. Therefore, the auxiliary sheet with a high fiber density stably suppresses the liquid return of the excrement of the absorbent body to the side of the top sheet, and the space between the fibers of the top sheet with a low fiber density has a warming effect. can further hold the air warmed by As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 6]
the first sheet member includes a top sheet and a pair of side sheets joined to both sides of the top sheet in the width direction, and inner end portions in the width direction of each of the pair of side sheets; Alternatively, a leak-proof wall extending along the longitudinal direction is provided at each of both ends of the surface sheet in the width direction, and the leak-proof wall has an outer edge in the width direction as a fixed end, 6. The absorbent article according to any one of modes 1 to 5, wherein the inner edge is a free end, and the warming part is located in a region overlapping with the topsheet in plan view.
The present absorbent article has a pair of leakage barriers on both sides in the width direction of the topsheet. Therefore, when the absorbent article is put on the wearer and the pair of leak-proof walls are in a state where they stand slightly toward the wearer's skin, the pair of leak-proof walls and the surface sheet facilitate the creation of a slight space. be able to. Then, the warmed air can be further retained in the space. As a result, in addition to the plurality of sheet member recessed portions and the plurality of absorbent body recessed portions, the skin can be kept warm with the warmed air even in these spaces. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 7]
a front warming part located on the front side of the absorbent body in the longitudinal direction and containing a warming agent, wherein one surface of the front warming part is in contact with the top sheet and the pair of side sheets; The absorbent article according to aspect 6, wherein the other surface is in contact with the second sheet member.
The present absorbent article further includes a front warming-sensing portion containing a warming-sensing agent located on the front side in the longitudinal direction of the absorbent body, that is, on the abdomen side of the wearer. Therefore, when the absorbent article is worn by the wearer, the wearer's abdomen can be warmed by the warming agent. Furthermore, since the pair of leak-proof walls extends to the front warmth-sensing part, it is easy to create a slight space on the abdomen of the wearer by means of the pair of leak-proof walls and the surface sheet. can. Then, the warmed air can be retained in the space. As a result, in addition to the plurality of recessed portions of the sheet member and the plurality of recessed portions of the absorbent body, the space on the wearer's abdomen can also keep the skin warm with warm air. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 8]
8. The absorbent article according to aspect 6 or 7, wherein the leak-proof wall has a structure in which two or more layers of sheets are laminated.
In this absorbent article, the leak-proof wall has a structure in which two or more layers of sheet members are laminated. Therefore, when the absorbent article is worn by the wearer, the air held in the space created by the pair of leak-proof walls and the surface sheet or the space created between two or more layers of sheet members is released further outward. can be made difficult to Then, in addition to the plurality of sheet member recesses and the plurality of absorber recesses, these spaces can also retain the warmed air. This allows the warm air to keep the skin warm. This makes it possible to further improve the durability of the warm feeling.

[Aspect 9]
9. The absorbent article according to any one of aspects 1 to 8, wherein the warming part contains the warming agent and a durable hydrophilic oil agent.
In the present absorbent article, the warming agent coexists with a durable hydrophilic oil agent that is less likely to flow out to lower layers (eg, absorbent body, lower part of absorbent body) due to excrement. Therefore, it is possible to suppress migration of the warming agent to the lower layer due to excrement. That is, it is possible to maintain the warm-sensitive material in a portion relatively close to the skin. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 10]
The first sheet member is an air-through non-woven fabric, and the air-through non-woven fabric has a net surface facing a net for transportation at the time of manufacture facing the skin side, and a non-net surface opposite to the net surface facing the non-skin side. 10. The absorbent article according to any one of aspects 1 to 9, wherein the warming part is arranged on the non-net surface.
The air-through nonwoven fabric has large voids between constituent fibers on the non-net surface. Therefore, in the present absorbent article, by arranging the warming part on the non-net surface, the warming agent can be easily held in the gaps between the constituent fibers, thereby continuously releasing the warming agent. It is possible to further improve the durability of the warmth. Additionally, after the warming agent is consumed or washed away by waste, the warmed air can still be retained in the void. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 11]
The absorbent article according to any one of aspects 1 to 10, wherein the first sheet member is a topsheet, and the topsheet is formed of hydrophilic fibers.
In the present absorbent article, since the surface sheet is made of hydrophilic fibers (eg, cotton, rayon, wool, silk), moisture including sweat can be easily drawn into and retained in the constituent fibers. This makes it difficult for water to remain on the surface of the constituent fibers, makes it difficult for water to come into contact with the skin, and makes it difficult for the skin to feel cold. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 12]
The absorbent article according to any one of aspects 1 to 11, wherein the absorbent contains a super absorbent polymer, and the ratio of the super absorbent polymer to the absorbent is 5 to 50% by mass.
In this absorbent article, the ratio of the superabsorbent polymer to the absorbent body is 5 to 50% by mass. In this way, by setting the ratio of the superabsorbent polymer to the absorber within a predetermined range, when the superabsorbent polymer absorbs excrement and swells, gaps are formed between adjacent swollen superabsorbent polymers. can be generated. Therefore, the air warmed by the warming effect can be further retained in the gap. As a result, it is possible to further improve the durability of the warm feeling. If the ratio is lower than 5% by mass, the number of voids generated when swelling is small, making it difficult to retain warm air. If the ratio is higher than 50% by mass, the superabsorbent polymer causes gel blocking. As a result, the absorption performance of the absorbent article deteriorates.

[Aspect 13]
Aspects 1 to 12, wherein the basis weight of the second adhesive for bonding the second sheet member and the absorbent body is larger than the basis weight of the first adhesive for bonding the first sheet member and the absorbent body. Absorbent article according to any one of.
In this absorbent article, the basis weight of the second adhesive that bonds the second sheet member and the absorbent body is increased. Although the second sheet member is non-breathable, it may have some air permeability, but by relatively increasing the basis weight of the second adhesive, it is possible to cover the gaps related to ventilation of the second sheet member. Therefore, the air impermeability of the second sheet member can be further enhanced. Therefore, the air warmed by the warming effect can be more stably held closer to the skin than the second sheet member. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 14]
The absorbent article further comprises a pair of longitudinal fold lines arranged on both sides of the longitudinal center line of the absorbent article, extending along the longitudinal direction, and spaced apart in the width direction. When folded and individually packaged, in the width direction, the portion of the absorbent article outside the pair of longitudinal fold lines is the skin side of the absorbent article with the pair of longitudinal fold lines as the base axis. 14. The absorbent article of any one of aspects 1-13, wherein the absorbent article is configured to fold toward a surface.
In the present absorbent article, when folded, in the width direction, the portion outside the pair of longitudinal fold lines of the absorbent article extends toward the skin-side surface of the absorbent article with the pair of longitudinal fold lines as the base axis. folded. Therefore, in the absorbent article, the positions of the pair of longitudinal fold lines are bent, and the portions outside the pair of longitudinal fold lines (the pair of outer portions) tend to rise toward the skin. Therefore, when the absorbent article is worn, the pair of outer parts pushes against the skin surface in the width direction so that the central part inside the pair of outer parts tends to be slightly separated from the skin surface. That is, a gap is likely to occur between the skin surface and the central portion. Therefore, the air warmed by the warming effect can be further retained in the gap. As a result, it is possible to further improve the durability of the warm feeling.

[Aspect 15]
15. The absorbent according to any one of aspects 1 to 14, further comprising an absorbent body including the absorbent body, and a warming body positioned on the front side of the absorbent body in the longitudinal direction and including the warming portion. sexual goods.
Even if the body temperature rises due to the warming agent, if excrement is present, the excrement will be cooled by the outside temperature and the heat of vaporization, and the chilled excrement will adhere to the skin, which may cause the skin to become cold. be. Therefore, in the present absorbent article, the area where excrement (eg, urine, menstrual blood) is excreted (approximately central part in the longitudinal direction and width direction of the absorbent body) and the area where the warming agent is arranged (warming area) ) are at least longitudinally spaced from each other. In other words, the warming agent is present in places where it is difficult for the agent to come into contact with the excrement. Therefore, even if the cooled excrement adheres to the skin and the skin becomes cold, the warming agent separated from the excrement can continue to provide a warm sensation, thereby cooling the skin. It can be suppressed.

Hereinafter, the absorbent article according to the embodiment will be described by taking a sanitary napkin as an example. However, the absorbent article is not limited to that example, and other absorbent articles may be used as long as they do not deviate from the gist of the present invention. Other absorbent articles include, for example, pantiliners, incontinence pads, and disposable diapers.

The configuration of the sanitary napkin 1 according to this embodiment will be described.
1 to 3 are diagrams showing configuration examples of a sanitary napkin 1 according to this embodiment. FIG. 1 is a plan view showing a state in which an individual packaging sheet 43 of a sanitary napkin 1 is opened and unfolded. FIG. 2 is a cross-sectional view of the sanitary napkin 1 shown in FIG. 1 (excluding the individual wrapping sheet 43) along the longitudinal centerline CL (described later). FIG. 3 is a bottom view of the sanitary napkin 1 shown in FIG. 1 (excluding the individual wrapping sheet 43). The sanitary napkin 1 of this embodiment has a longitudinal direction L, a width direction W and a thickness direction T which are orthogonal to each other. In the sanitary napkin 1 depicted in FIG. 1 , the upper side of the drawing is the front side (front) or ventral side in the longitudinal direction L, and the lower side of the drawing is the rear side (rear side) or dorsal side of the longitudinal direction L. When the sanitary napkin 1 placed on a plane including the longitudinal direction L and the width direction W is viewed from the upper side in the thickness direction T, it is called "planar view", and the shape grasped in plan view is called "planar shape". An arbitrary direction within a plane including the longitudinal direction L and the width direction W is called a "planar direction". When the wearer wears the sanitary napkin 1, the sides in the thickness direction T that are relatively close to and far from the wearer's skin surface are referred to as the "skin side" and the "non-skin side." These definitions are commonly used for each material of the sanitary napkin 1 as well.

Both ends in the longitudinal direction L of the individual packaging sheet 43 are longer outside in the longitudinal direction L than both ends in the longitudinal direction L of the sanitary napkin 1, and both ends in the width direction W are longer than the ends of the sanitary napkin 1 in the longitudinal direction. It is formed so as to be longer outside in the width direction W than both end portions in the width direction W. As shown in FIG. That is, when the sanitary napkin 1 is placed on the individual packaging sheet 43, the sanitary napkin 1 can be placed so as not to protrude outside the individual packaging sheet 43 in plan view. is folded together with the individual packaging sheet 43, the sanitary napkin 1 can be packaged so as not to protrude outside the individual packaging sheet 43.例文帳に追加

The sanitary napkin 1 includes an absorbent main body 3 that mainly absorbs liquid excrement (example: menstrual blood), and a warming main body 5 that is positioned in front of the absorbent main body 3 in the longitudinal direction L and causes the skin to perceive warmth. And prepare. That is, the sanitary napkin 1 is divided into an absorbent body 3 at the rear in the longitudinal direction L and a warming body 5 at the front in the longitudinal direction L. As shown in FIG. The absorbent main body 3 has a generally general sanitary napkin shape, and has a pair of wings 17, 17 extending outward in the width direction W. As shown in FIG. The shape of the warming body 5 is not particularly limited, and examples thereof include triangles, rectangles, polygons (including cases with rounded corners and curved sides), circles, ovals, shapes of living organisms, and combinations thereof. be done. The sanitary napkin 1 has a longitudinal center line CL (imaginary line) extending in the longitudinal direction L passing through the center of the width direction W, and a pair of wing portions 17, 17 connecting the center of the longitudinal direction L of each of the pair of wing portions 17, 17 to the width direction W. and a width direction center line CW (virtual line) (extending in the width direction W through the center of the longitudinal direction L). In the sanitary napkin 1, the direction and the side toward the longitudinal center line CL are the inward direction and the inner side in the width direction W, respectively, and the direction and the side away from it are the outward direction and the outer side in the width direction W, respectively. On the other hand, the direction and the side toward the center line CW in the width direction are defined as the inward direction and the inner side in the longitudinal direction L, respectively, and the direction and the side away from the width direction center line CW are defined as the outward direction and the outer side in the longitudinal direction L, respectively. In the absence of the pair of wing portions 17, 17, the widthwise center line CW extends in the widthwise direction W through the center of the excretory opening contact area 21 (described later) of the absorbent main body 3 in the longitudinal direction L. line. In this embodiment, both are assumed to match. Alternatively, when the absorber 11 has a so-called hourglass shape, the widthwise center line CW extends in the widthwise direction W through the position (excluding both ends) where the widthwise dimension of the absorber 11 is the smallest in the longitudinal direction L. Let the line extend. Note that in another embodiment, the warming body 5 is not provided.

The sanitary napkin 1 includes, in the absorbent body 3, a liquid-permeable sheet 7 that contacts the wearer's skin when worn, a liquid-impermeable sheet 9 that contacts clothes (underwear) when worn, a liquid-permeable sheet 7, and and an absorbent body 11 arranged between the liquid-impermeable sheets 9 . In addition, the sanitary napkin 1 includes, in the warming body 5, a liquid-permeable sheet 7 that contacts the wearer's skin when worn, a liquid-impermeable sheet 9 that contacts the wearer's clothes when worn, a liquid-permeable sheet 7, and and a warming agent holding sheet 13 arranged between the liquid impermeable sheets 9 . The warming agent holding sheet 13 is positioned on the front side in the longitudinal direction L of the absorber 11 . The liquid-permeable sheet 7 in the absorbent main body 3 and the liquid-permeable sheet 7 in the warming main body 5 are an integral sheet. Further, the liquid-impermeable sheet 9 in the absorbent main body 3 and the liquid-impermeable sheet 9 in the warming main body 5 are an integral sheet. However, the integral sheet includes not only the case where the material is one sheet but also the sheet obtained by combining and integrating a plurality of sheets. The absorbent body 11 in the absorbent main body 3 and the warming agent holding sheet 13 in the warming main body 5 are separate members. The overlapping portion 15 is formed by overlapping the front end portion of the absorbent body 11 in the longitudinal direction L with the rear end portion of the warming agent holding sheet 13 in the longitudinal direction L in the thickness direction T. As shown in FIG. That is, in the longitudinal direction L, the front edge 11E1 of the absorbent body 11 is located forward of the rear edge 13E2 of the warming agent holding sheet 13. As shown in FIG. In this case, in the overlapping portion 15 , the end of the absorbent body 11 is arranged on the end of the warming agent holding sheet 13 . This is for suppressing leakage of excrement forward in the longitudinal direction L. In another embodiment, when the function of warmth is emphasized, the edge of the warming agent holding sheet 13 is arranged on the edge of the absorber 11 in the overlapping portion 15 . In yet another embodiment, the end of the absorbent body 11 and the end of the warming agent holding sheet 13 do not overlap in plan view (the overlapping portion 15 does not exist), and their edges are touching or separated. In yet another embodiment, the position of the front edge 11E1 in the longitudinal direction L of the absorbent body 11 overlaps with the position of the front edge 13E1 in the longitudinal direction L of the warming agent holding sheet 13, or more. also exist outside. In other words, the warming agent holding sheet 13 overlaps the absorber 11 over the entire length in the longitudinal direction L. As shown in FIG. As another embodiment, the warming body 5 is replaced with a heat retaining body of the same shape, and the warming agent holding sheet 13 is replaced with a heat retaining sheet of the same shape that does not contain a warming agent.

In this embodiment, the range in the longitudinal direction L of the absorbent body 3 is the range from the rear edge of the sanitary napkin 1 to the front edge 11E1 of the absorbent body 11 . On the other hand, the range in the longitudinal direction L of the warming body 5 is the range from the front edge 11E1 of the absorbent body 11 to the front edge of the sanitary napkin 1 . The range in the width direction W of the absorbent main body 3 and the warming main body 5 is both the full width range. In this case, it can be said that the overlapping portion 15 is included in the absorbent main body 3 and the rear end portion of the warming agent holding sheet 13 of the warming main body 5 in the longitudinal direction L extends into the absorbent main body 3 . In addition, in the longitudinal direction L, the absorbent body 3 has a front region 3a from the widthwise center line CW to the front edge 11E1 of the absorbent body 11, and a widthwise centerline CW to the rear edge of the sanitary napkin 1. and a rear region 3b. However, the front and rear edges of the sanitary napkin 1, the front and rear edges 11E1 and 11E2 of the absorbent body 11, and the front and rear edges 13E1 and 13E2 of the warming agent holding sheet 13 in the longitudinal direction L are , are the outermost positions in the longitudinal direction L. In the present embodiment, the edges 11E1 and 11E2 and the edges 13E1 and 13E2 are all at intersections with the longitudinal centerline CL.

In the sanitary napkin 1, the absorbent main body 3 has an excretion opening contact area 21 positioned slightly forward in the longitudinal direction L and at the center in the width direction W in a plan view, and surrounding it as a non-excretion area. A mouth contact area 23 is located. The excretory opening contact area 21 is an area that faces or contacts the excretory opening of the wearer when the sanitary napkin 1 is worn. The excretory opening contact area 21 is determined according to the type and application of the absorbent article. The excretory opening contact area 21 is, for example, slightly forward in the center of the absorbent body 11 in the longitudinal direction L and has a length of about 1/4 to 2/3 of the total length of the absorbent body 11 in the longitudinal direction L. , and has a width of about 1/3 to 3/4 of the total length in the width direction W of the absorbent body 11 at approximately the center of the absorbent body 11 . When there is a pair of wing portions 17, 17 as in the present embodiment, the excretory opening contact area 21 is formed on a line connecting the centers of the pair of wing portions 17, 17 in the longitudinal direction L to the width direction W. The center in the longitudinal direction L is located. Alternatively, when the absorbent body 11 has a so-called hourglass shape, the longitudinal direction L of the excretion opening contact area 21 is placed at the position where the dimension in the width direction W of the absorbent body is the smallest except for both ends in the longitudinal direction L of the absorbent body. center is located. However, positional deviation within a predetermined length range is allowed. The predetermined length is 5% of the length in the longitudinal direction L of the absorbent body 11 .

The liquid-permeable sheet (first sheet member) 7 overlaps the absorber 11 in the thickness direction T, and includes a top sheet 7a and a pair of side sheets 7b, 7b joined to both sides in the width direction W of the top sheet 7a. , is equipped with The dimension in the width direction W of the surface sheet 7 a is approximately the same as the dimension in the width direction W of the absorbent body 11 . Each side seat 7b includes a leak-proof wall 7W located at the inner end in the width direction W and extending along the longitudinal direction L. As shown in FIG. That is, the liquid-permeable sheet 7 includes a pair of leak-proof walls 7W, 7W. Each leak-proof wall 7W has an outer edge as a fixed end and an inner edge as a free end in the width direction W, and extends upward in the thickness direction T of the surface sheet 7a. . The pair of leak-proof walls 7W, 7W are formed such that their free ends can stand up toward the skin when the sanitary napkin 1 is worn. A pair of leak-proof walls 7W, 7W are formed on the absorbent main body 3 and the warming main body 5 to prevent excrement from leaking mainly to the outside in the width direction W and to prevent the warming main body 5 from feeling warm. The effect of (1) suppresses and holds warmed air from escaping to the outside in the width direction W. In another embodiment, each of both ends in the width direction W of the surface sheet 7a includes a leak-proof wall 7W extending along the longitudinal direction L. As shown in FIG. In still another embodiment, the liquid-permeable sheet 7 does not have a pair of side sheets 7b, 7b. In yet another embodiment, the liquid-permeable sheet 7 does not have a pair of leak-proof walls 7W, 7W.

The sanitary napkin 1 is in contact with the non-skin side of the surface sheet 7a, and therefore overlaps with the absorbent body 11 in the thickness direction T, thereby diffusing excrement in the plane direction as a liquid diffusion sheet (first sheet member; auxiliary sheet). 41. That is, the liquid diffusion sheet 41 is arranged between the surface sheet 7 a and the absorbent body 11 and the warming agent holding sheet 13 . FIG. 4 is a plan view showing a configuration example of the liquid-permeable sheet 7 according to this embodiment, and FIG. 5 is a cross-sectional view taken along line VV in FIG. The surface sheet 7a of the liquid permeable sheet 7 and the liquid diffusion sheet 41 are formed by pressing the skin side surface of the surface sheet 7a toward the liquid diffusion sheet 41 to form a plurality of sheet compressed portions 67 (sheet member concave portions). ). The plurality of sheet pressing portions 67 integrate the surface sheet 7 a and the liquid diffusion sheet 41 . The sheet pressing portion 67 has a depression P2 formed by pressing. The plurality of sheet pressers 67 are arranged to form an area 66 bordered (enclosed) continuously or intermittently with several sheet pressers 67 . In this embodiment, the shape of the sheet pressing portion 67 in plan view is circular (diameter d ₆₇ ; exemplified 0.5 to 2 mm), but the shape is not limited to this example and may be arbitrary. In addition, the shape of one region 66 in a plan view is a rhombus, and the plurality of sheet pressing portions 67 are arranged in a pattern of a plurality of rhombuses, but the shape and pattern are not limited to that example. Optional. The integrated surface sheet 7a and liquid diffusion sheet 41 are generally in contact with each other in the thickness direction T in general. However, as shown in FIG. 5, some of the plurality of regions 66 are formed with a slight gap P3 between the surface sheet 7a and the liquid diffusion sheet 41 due to movement of the wearer during wearing. However, it can hold warm air due to the effect of warmth. Furthermore, the depression P2 of each of the plurality of sheet pressing portions 67 can hold warm air due to the effect of warmth. At this time, the fiber density of the liquid permeable sheet 7 is lower than the fiber density of the liquid diffusion sheet 41 . In another embodiment, the fiber density of the liquid permeable sheet 7 is equal to or higher than the fiber density of the liquid diffusion sheet 41 . Furthermore, in another embodiment, the sanitary napkin 1 does not have the liquid diffusion sheet 41 . 2, 10, and 11, which are cross-sectional views, the description of the sheet pressing portion 67 is omitted.

The absorber 11 is partitioned into a central region 62 located substantially in the center in the longitudinal direction L, a front region 61 adjacent to the front of the central region 62, and a rear region 63 adjacent to the rear of the central region 62. . Here, the central region 62 corresponds to the excretory opening contact region 21 and is located in a range up to the front side in the longitudinal direction L thereof. The basis weight of the central region 62 is higher than the basis weights of the front region 61 and the rear region 63 . Therefore, in the absorbent body 11, the basis weight of the area on the front side of the widthwise center line CW in the longitudinal direction L is higher than the basis weight of the area on the rear side of the widthwise center line CW in the longitudinal direction L. In other words, in the absorbent body 11, the basis weight of the region from the width direction center line CW to the front edge 11E1 in the longitudinal direction L is the weight of the region from the width direction center line CW to the rear edge 11E2 in the longitudinal direction L. Higher than basis weight. As a result, the absorption amount in the excretory opening contact area 21 slightly forward from the center in the longitudinal direction L is increased, and the wearer's excretion opening is shifted slightly forward in the longitudinal direction L from the excretory opening contact area 21. Even when the sanitary napkin 1 is worn in this state, the absorbent body 11 can reliably absorb the excrement. In another embodiment, the basis weight of the absorbent body 11 is high in specific portions different from the above, or is substantially constant over the entire region.

In the present embodiment, the thickness (or basis weight) of the central portion in the width direction W of the absorber 11 is thinner (or lower) than the thickness (or basis weight) of both end portions in the width direction W. However, the degree of thinness (or lowness) at both ends may be 3% of the central portion, preferably 5%. Here, the end portion of the absorbent body 11 in the width direction W is defined as a region within a range of 10% of the width of the absorbent body 11 from the edge of the absorbent body 11 in the width direction W. The central portion in the width direction W of the absorbent body 11 is defined as a region excluding both side end portions in the width direction W. As shown in FIG. When both ends of the absorbent body 11 come into contact with the skin (via the liquid-permeable sheet 7), it is possible to easily create a slight gap between the central part of the absorbent body and the skin.

The absorbent body 11 includes an absorbent core (not shown) and a core wrap (not shown) that wraps the absorbent core. FIG. 6 is a plan view showing a configuration example of the absorbent body 11 according to this embodiment, and FIG. 7 is a cross-sectional view taken along line VII--VII in FIG. The absorbent body 11 has a plurality of absorbent body compressed portions 60 (absorbent body concave portions) formed by pressing the skin-side surface of the core wrap 11a toward the inside of the absorbent core 11b. The plurality of absorbent body compression parts 60 suppress the shape loss of the absorbent body 11 . Furthermore, each of the plurality of absorbent body pressing parts 60 forms a recess P1 that is recessed toward the non-skin side by pressing. The recess P1 has a bottom portion 60B and a wall surface 60W. In the present embodiment, the shape of the absorbent body pressing portion 60 in plan view is circular (diameter d ₆₀ ; exemplified 0.5 to 2 mm), but the shape is not limited to this example and is arbitrary. Moreover, although the plurality of absorbent body compressing portions 60 are arranged in a plurality of zigzag patterns, the pattern is not limited to that example and is arbitrary. Each of the plurality of absorbent body compressing parts 60 forms a small space between the recess P1 and the liquid diffusion sheet 41, and can hold warm air due to the effect of warmth. However, in the absorbent body 11, the density of the number of arranged absorbent body compressing portions 60 in the central region 62, that is, the region including the excretory opening contact region 21 is higher than the density of From the viewpoint of making the central region 62 having a relatively high basis weight more difficult to lose its shape, and the central region 62 including the excretion port contact region 21 retains more warm air due to the effect of warmth to make it sensitive to excretion. From the viewpoint of making it easier to warm the mouth. In another embodiment, absorbent body 11 does not use a core wrap. In yet another embodiment, the absorbent body 11 does not have an absorbent compression part. 2, 10, and 11, which are cross-sectional views, the description of the absorbent body compressing portion 60 is omitted.

In this embodiment, the plurality of sheet pressing units 67 are arranged in a pattern of a plurality of rhombuses. On the other hand, the plurality of absorbent body compressing portions 60 are arranged in a plurality of zigzag patterns. Therefore, it can be said that the sheet pressing portions 67 and the absorbent body pressing portions 60 are basically (mostly) arranged at different positions from each other in a plan view. However, a portion of the plurality of sheet pressing portions 67 and a portion of the plurality of absorbent body pressing portions 60 may be arranged at the same position in plan view.

The warming agent-retaining sheet 13 (functional layer) is composed of a single-layer or multiple-layer sheet such as a non-woven fabric capable of holding liquid (excretion), and contains a warming agent 50 (functional agent). . The shape of the warming agent holding sheet 13 is not particularly limited as long as it can be arranged inside the peripheral edge portion 27 of the sanitary napkin 1 that suppresses leakage of the warming agent 50. For example, the shape of the warming body 5 is similar. A reduced shape is included. The warming agent 50 stimulates thermoreceptors (thermal receptors) in the skin to make the wearer perceive warmth without heating the body of the wearer of the sanitary napkin 1 or its vicinity. It contains a warming component and further contains a solvent component capable of dissolving or dispersing the warming component. The warming agent 50 is in the form of gas or liquid and contains a fluid component or a volatile component that can move from the place where it is placed due to the influence of temperature, air pressure, external force, etc. For example, at least a warming component and a solvent component are included. One contains the fluid component or the volatile component. Even if the warming agent-holding sheet 13 is arranged on the non-skin side of the liquid-permeable sheet 7, the warming agent 50 of the warming agent-holding sheet 13 may elute or dissolve when the sanitary napkin 1 is worn. It can permeate through the liquid-permeable sheet 7 by volatilization or the like, and can come into contact with the skin of the wearer's lower abdomen. As a result, the warming component of the warming agent 50 stimulates the heat receptors in the skin, giving a warm sensation to the lower abdomen of the wearer.

In this embodiment, the warming agent 50 extends in the longitudinal direction L and is aligned in the width direction W within the width direction W of the surface sheet 7a of the warming agent holding sheet 13 (continuously or continuously). intermittent). In this case, the length of the warming agent holding sheet 13 in the width direction W is equal to or shorter than the length of the absorbent body 11 in the width direction W, and the warming agent 50 leaks to both sides of the warming body 5 in the width direction W. it gets harder. In another embodiment, the warming agent 50 is arranged in the inner central portion 25 of the warming agent holding sheet 13 excluding the peripheral portion in plan view. In this case, the length in the width direction W of the warming agent holding sheet 13 is longer than the length in the width direction W of the absorber 11 . As a result, the effect of the warming agent 50 extends over a wider region in the width direction W than the absorbent body 11 . In still another embodiment, the warming agent 50 is disposed on the entire warming agent holding sheet 13 including the peripheral edge portion in plan view. In yet another embodiment, the warming agent 50 does not contain a solvent component. In yet another embodiment, the warming body 5 has a support sheet that supports the warming agent-holding sheet 13 on the non-skin side of the warming agent-holding sheet 13 . In yet another embodiment, the warming body 5 does not include the warming agent 50 in the warming agent-retaining sheet 13, so the warming agent-retaining sheet 13 acts as a heat retaining sheet to keep the lower abdomen warm.

In this embodiment, the absorbent body 11 further has a function as a functional layer, that is, contains a warming agent 52 (functional agent). FIG. 8 is a schematic diagram showing the arrangement of the warming agent 52 in the absorbent body 11 according to the embodiment. The warming agent 52 is arranged in a plurality of striped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W on the skin-side surface of the absorbent body 11 . In this case, the range in the width direction W in which the warming agent 52 is arranged is generally within the range in the width direction W of the topsheet 7a. The warming agent 52 is located at a different position than the warming agent 50, but has the same properties. In another embodiment, the warming agent 52 is disposed on yet another portion of the absorbent body 11, such as on or within the non-skin side. In yet another embodiment, absorbent body 11 does not include warming agent 52 .

In this embodiment, the liquid-permeable sheet 7 (first sheet member) further functions as a functional layer, that is, contains a warming agent 51 (functional agent). FIG. 9 is a schematic diagram showing the arrangement of the warming agent in the liquid-permeable sheet according to the embodiment. The warming agent 51 is arranged in a plurality of striped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W on the non-skin side surface of the liquid permeable sheet 7 . In this case, the range in the width direction W in which the warming agent 51 is arranged is generally within the range in the width direction W of the absorbent body 11 . The warming agent 51 and the warming agent 50 are arranged in different positions, but have the same properties. In another embodiment, the warming agent 51 is arranged on another part of the liquid-permeable sheet 7, for example, on the skin-side surface. In still another embodiment, the warming agent 51 is arranged on the non-skin side or skin side surface of the liquid diffusion sheet 41 instead of or in addition to the liquid permeable sheet 7 . In still another embodiment, the liquid-permeable sheet 7 does not contain the warming agent 51 .

Therefore, in the present embodiment, the above-described mode in which the absorbent body 11 contains the warming agent 52, the mode in which the liquid-permeable sheet 7, which is the first sheet member, contains the warming agent 51, and the mode, which is the first sheet member, include the liquid At least one aspect of the aspect in which the diffusion sheet 41 contains the warming agent 51 is implemented. The liquid permeable sheet 7 and the liquid diffusion sheet 41, which are the first sheet member, are a plurality of sheets recessed from the skin-side surface toward the non-skin-side surface in a region overlapping the warming agent 51 in plan view. It includes a plurality of sheet pressing portions 67 as member recesses. In addition, the absorbent body 11 has a plurality of absorbent bodies recessed from the skin-side surface toward the non-skin-side surface in a region overlapping the warming agent 52 in plan view and at a position different from the plurality of sheet pressing portions 67 . It includes an absorber pressing portion 60 as a recess.

In another preferred aspect of this embodiment, the sanitary napkin 1 contains a warming agent in the warming body 5 . That is, when the sanitary napkin 1 contains the warming agent 50 in the warming agent holding sheet 13 , the case where the warming agent 51 is contained in the liquid permeable sheet 7 in the warming body 5 , and the case where the warming body 5 contains the liquid At least one of the following: when the diffusion sheet 41 contains the warming agent 51 ;
Here, even if the body temperature rises due to the warming agent, if excrement (example: urine, menstrual blood) is present, the excrement is cooled by the outside temperature and the heat of vaporization, and the chilled excrement adheres to the skin. By doing so, the skin may also become cold. Therefore, the sanitary napkin 1 has a region where excrement is excreted (substantially central portion in the longitudinal direction L and the width direction W of the absorbent body 11) and a region (warming body 5) where the warming agent is arranged. are spaced from each other at least in the longitudinal direction L. In other words, the warming agent is present in places where it is difficult for the agent to come into contact with the excrement. Therefore, even if the cooled excrement adheres to the skin and the skin becomes cold, the warming agent separated from the excrement can continue to provide a warm sensation, thereby cooling the skin. It can be suppressed.

In the sanitary napkin 1, the liquid-impermeable sheet 9 (second sheet member) overlaps the absorber 11 in the thickness direction T and does not have air permeability (is non-air-permeable). Therefore, the sanitary napkin 1 has a structure in which it is difficult for the air existing in the area closer to the skin than the liquid-impermeable sheet 9 to escape to the non-skin side of the liquid-impermeable sheet 9, that is, to the outside of the sanitary napkin 1. It's becoming In other words, the sanitary napkin 1 has a structure in which it is difficult for the air warmed by the heat sensation to escape to the outside of the sanitary napkin 1 .

The warming agent holding sheet 13 is composed of a sheet capable of holding liquid (example: non-woven fabric), so it can absorb excrement although not as well as the absorbent body 11 . Therefore, the warming agent holding sheet 13 can be regarded as a low absorption portion having lower absorption performance than the absorbent body 11 . The low absorption part belongs to the warm body 5 and can assist the absorption of excrement in the front in the longitudinal direction L. Here, from the relationship between the warming agent holding sheet 13 and the absorbent body 11, the absorbent body 11 and the low absorption portion (warming agent holding sheet 13) are continuous in the longitudinal direction L when viewed from the width direction W. can be said to exist. Similarly, a part of the absorbent body 11 and a part of the low absorbent part overlap in the thickness direction T at the overlapping part 15, and a part of the absorbent body is located on the skin side of a part of the low absorbent part. Overlapping parts. As another embodiment, when the warming body 5 has a support sheet (example: nonwoven fabric) having the same shape as the warming agent holding sheet 13 in plan view on the non-skin side of the warming agent holding sheet 13, The support sheet (with or without the warming agent holding sheet 13 ) can be viewed as a low absorption part having a lower absorption performance than the absorbent body 11 .

The sanitary napkin 1 has an adhesive portion for fixing the sanitary napkin 1 to the clothes of the wearer in both the absorbent body 3 and the warming body 5 . One surface of the adhesive portion is fixed to the liquid-impermeable sheet 9 and the other surface is temporarily fixed to the individual packaging sheet 43 of the sanitary napkin 1 . Among them, the absorbent main body 3 includes, in a plan view, an adhesive portion 73 which is arranged in a region overlapping with the absorbent body 11, extends along the longitudinal direction L and is intermittently arranged in the width direction W, and the width of the wing portion 17. An adhesive portion 71 extending along the longitudinal direction L is arranged substantially in the central portion in the direction W. As shown in FIG. On the other hand, the heat-sensing main body 5 is provided with adhesive portions 72 at both end regions in the width direction W. As shown in FIG. In another embodiment, the other surface of the adhesive part is temporarily fixed to a release sheet fixed to the individual packaging sheet 43 .

As shown in FIG. 1, the individual package (sanitary napkin 1 + individual packaging sheet 43) has a first longitudinal folding line F1 (example: left folding line) and a second longitudinal folding line F2 (example: right folding line). , a width direction first folding line F3 (example: front folding line) and a width direction second folding line F4 (example: rear folding line). However, the first longitudinal folding line F1 and the second longitudinal folding line F2 (a pair of longitudinal folding lines) extend along the longitudinal direction L and are arranged parallel to each other at predetermined intervals from one side to the other side in the width direction W. there is The first width-direction folding line F3 and the second width-direction folding line F4 extend along the width direction W and are arranged parallel to each other at predetermined intervals from one side to the other side in the longitudinal direction L. That is, there are two longitudinal fold lines and two width direction fold lines. However, the first width-direction folding line F3 is arranged in front of the sanitary napkin 1, and the second width-direction folding line F4 is arranged behind the sanitary napkin 1. As shown in FIG. The first width-direction folding line F3 is located at the front end of the absorbent body 3 and the rear end of the warming body 5 . Specifically, the first widthwise folding line F3 is positioned closer to the widthwise center line CW than the front edge 11E1 in the longitudinal direction L of the absorbent body 11 . However, the first widthwise folding line F3 and the second widthwise folding line F4 are located on the front side and the rear side in the longitudinal direction L of the excretion opening contact area 21 so as to avoid the excretion opening contact area 21 . However, in another embodiment, there are no longitudinal fold lines. In still another embodiment, the number of width direction fold lines is one or three or more.

When the sanitary napkin 1 is individually wrapped, the portion (a pair of ) are each folded toward the skin-side surface. Next, in the sanitary napkin 1 folded together with the individual packaging sheet 43, the portions on the outer side in the longitudinal direction L of the first width-direction folding line F3 and the second width-direction folding line F4 are the skin-side surfaces, respectively. folded towards. After that, one end of the individual packaging sheet 43 is fixed to the opposing individual packaging sheet 43 with the fixing tape 45 . Thereby, an individual package of the sanitary napkin 1 is formed. When the sanitary napkin 1 is to be used, that is, when the individual packaging is opened, the procedure for individual packaging is reversed.

The sanitary napkin 1 also has a plurality of pressing portions 31 and 33 . The plurality of compressed portions 31 are arranged in a curved line continuously or intermittently so as to surround the excretory opening contact area 21 mainly in the absorbent body 3 . The plurality of compressed portions 33 are arranged in a dot-like manner in a region surrounded by the plurality of compressed portions 31 in the absorbent body 3 . The compressed portions 31 and 33 are formed by compressing the liquid permeable sheet 7 and the absorbent body 11 (and the warming agent holding sheet 13 in the overlapping portion 15) from the skin side toward the non-skin side. In addition, the shape and arrangement of the plurality of pressing portions 31 and 33 are arbitrary. In another embodiment, in the warming main body 5, the liquid-permeable sheet 7 and the warming agent holding sheet 13 (and the absorbent body 11 in the overlapping portion 15) are further pressed from the skin side to the non-skin side. with one or more presses. The shape of the pressing part is arbitrary.

The sanitary napkin 1 also has a seal portion 29 . The seal portion 29 joins and seals the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 at their peripheral edge portions 27 by a known method such as heat sealing. In the sanitary napkin 1, the non-skin-side surface of the liquid-permeable sheet 7 and the skin-side surfaces of the absorbent body 11 and the warming agent holding sheet 13 are joined with a first adhesive (not shown). The non-skin side surfaces of the warming agent holding sheet 11 and the warming agent holding sheet 13 and the skin side surface of the liquid impermeable sheet 9 are joined with a second adhesive (not shown). In this embodiment, the basis weight of the second adhesive (not shown) is greater than the basis weight of the first adhesive. In another embodiment, the basis weight of the second adhesive (not shown) is less than the basis weight of the first adhesive, or both basis weights are the same.

In the sanitary napkin 1, when worn by the wearer, at least one of the warming agent 52 of the absorbent body 11 and the warming agent 51 of the liquid permeable sheet 7 (and the liquid diffusion sheet 41) (first sheet member) , it is possible to obtain a warming effect that the wearer can perceive warmth. At that time, since the liquid permeable sheet 7 (and the liquid diffusion sheet 41) includes a plurality of sheet pressing portions 67 (sheet member concave portions), at least part of the air warmed by the effect of the warming agent 51 is The recess P2 of the sheet pressing portion 67 can hold the sheet. Furthermore, since the absorbent body 11 includes a plurality of absorbent body compression parts 60 (absorbent body recessed parts), at least part of the air warmed by the effect of the warming agent 52 is absorbed by the depressions P1 of the plurality of absorbent body compression parts 60. can hold. Here, since the positions of the sheet compressing portions 67 and the absorber compressing portions 60 are shifted from each other, when the plurality of sheet compressing portions 67 and the plurality of absorber compressing portions 60 are combined, a large amount of warmed air is retained. be able to. Then, they are held by a non-breathable liquid-impermeable sheet 9 (second sheet member) located on the non-skin side of the absorber 11 and the liquid-permeable sheet 7 (and the liquid diffusion sheet 41). The air can be generally confined on the skin side so as not to flow outward. Due to their synergistic effect, in addition to obtaining a warming effect from the warming agent 51 and/or the warming agent 52, when excretion makes it difficult for the warming agent to reach the skin, or when the temperature of the absorbent body 11 is high, Even when it is lowered, the warm air can keep the skin warm, and a warming effect can be obtained. As a result, it is possible to improve the durability of the warm feeling.

Next, a preferred method of using the sanitary napkin 1 according to this embodiment will be described.
When the wearer wears the sanitary napkin 1, first, the sanitary napkin 1 is put on so that the excretory opening contact area 21 of the absorbent body 11 of the absorbent main body 3 corresponds to the excretory opening of the wearer (example: shorts). ). As a result, the sanitary napkin 1 is fixed to the wearer's clothing so that the warming agent holding sheet 13 of the warming body 5 corresponds to the lower abdomen of the wearer. Then, the sanitary napkin 1 is used with the skin-side surface of the warming body 5 in contact with the skin of the wearer's lower abdomen.

In other words, in the sanitary napkin 1, when the absorbent main body 3 is placed on the wearer's clothes so that the excretion opening contact area 21 of the absorbent body 11 contacts the wearer's excretion opening, the warming agent holding sheet 13 is placed on the wearer's clothes. It has a shape to be placed at a position corresponding to the lower abdomen of the. Therefore, the distance between the excretory opening contact area 21 of the absorbent body 11 of the absorbent main body 3 and the warming agent holding sheet 13 of the warming main body 5 is the distance between the wearer's excretory opening and the lower abdomen (on the skin surface). distance).

In this embodiment, the warming agent 50 (functional agent) of the warming agent holding sheet 13 contains a warming component that activates TRP channels and a solvent component. Therefore, when the sanitary napkin 1 is fixed to clothing and used, the warming agent 50 contained in the warming agent holding sheet 13 permeates the liquid-permeable sheet 7 and comes into contact with the wearer's skin. In the wearer's skin, the TRP channel in the portion of the wearer's skin that is in contact with the warming agent can be efficiently activated, and a warm sensation can be efficiently imparted to the lower abdomen of the wearer.

By applying a warm sensation to the lower abdomen of the wearer, the TRP channel in the part of the skin of the wearer's lower abdomen that is in contact with the warming component is activated. , heat is generated from the part in contact with the warming agent, and it can be expected to raise the temperature of the part in contact with the warming component on the wearer's skin. As a result, it is expected that the region near the wearer's uterus will be warmed, the pain substance prostaglandin will be excreted, and the wearer's menstrual pain will be alleviated. By warming the part near the uterus of the wearer, it is expected that the premenstrual syndrome, sensitivity to cold, menopausal disorder, etc. of the wearer will be alleviated. By promoting blood circulation (promoting the flow of lymph), it is expected to discharge waste products, improve coldness, improve fat burning, and improve immunity.

In a preferred aspect of the present embodiment, in the absorbent body 11, the density of the arrangement number of the absorbent body pressing portions 60 (absorbent body concave portions) in the excretion opening contact area 21 is The density of the arrangement number of (absorber concave portions) is higher than that of the concave portions of the absorbent body. Therefore, when the sanitary napkin 1 is worn by the wearer, more warm air can be retained in the excretory opening contact area 21 . Therefore, the skin in the vicinity of the excretory opening, which is sensitive and sensitive to temperature changes, can be warmed and kept warm continuously. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, in the width direction W, the thickness of the central portion of the absorbent body 11 is made thinner than the thickness of both end portions located on both sides of the central portion. Therefore, the sanitary napkin 1 is worn by the wearer, and in the width direction W, both ends of the absorbent body 11 come into contact with the skin (via the liquid permeable sheet 7 and the liquid diffusion sheet 41 (first sheet member)). At this time, it is possible to easily create a slight gap between the central portion of the absorbent body 11 and the skin. Then, the warmed air can be further retained in the gap. Therefore, the skin in the vicinity of the excretory opening, which is sensitive and susceptible to temperature changes, with which the central portion of the absorbent body 11 may come into contact, can be kept warmer and longer. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of this embodiment, the sheet member concave portion includes a sheet pressing portion 67 that integrates the surface sheet 7a and the liquid diffusion sheet 41 that are in contact with each other. In other words, the surface sheet 7a and the liquid diffusion sheet 41 are connected to each other at a plurality of sheet pressing portions 67, but are not connected at locations other than the sheet pressing portions 67. As shown in FIG. Therefore, when the sanitary napkin 1 is worn by the wearer, the surface sheet 7a and the liquid diffusion sheet 41 are spaced apart from each other in the thickness direction T between the adjacent sheet pressing portions 67 (not closest to each other). It is possible to easily create a slight gap P3. Then, the warmed air can be further retained in the gap P3. Therefore, it is possible to keep the skin warm with warmed air not only in the plurality of sheet compressing portions 67 but also in the gap P3. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, the fiber density of the surface sheet 7a made of nonwoven fabric is lower than the fiber density of the liquid diffusion sheet 41 made of nonwoven fabric, which is in contact with the non-skin side thereof. Therefore, while the liquid diffusion sheet 41 with a high fiber density stably suppresses the liquid return of the excrement of the absorbent body 11 to the topsheet 7a, the voids between the fibers of the topsheet 7a with a low fiber density Warm air can be further retained due to the effect of warmth. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, a pair of leak-proof walls 7W, 7W are provided on both sides in the width direction W of the surface sheet 7a. Therefore, when the sanitary napkin 1 is worn by the wearer, the pair of leak-proof walls 7W, 7W are slightly raised toward the wearer's skin. It is possible to easily create a slight space on the skin side of the sheet 7a. Then, the warmed air can be further retained in the space. As a result, in addition to the plurality of sheet compressing units 67 and the plurality of absorbent body compressing units 60, the skin can be kept warm with the warmed air even in that space. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, the warming agent holding sheet 13 containing the warming agent 50 (the front warming agent holding sheet 13) is located on the front side (wearer's ventral side) in the longitudinal direction L of the warming body 5, that is, the absorbent body 11. sensor) is further provided. Therefore, when the sanitary napkin 1 is worn by the wearer, the wearer's abdomen can be warmed by the warming agent 50 . Furthermore, since the pair of leak-proof walls 7W, 7W extends to the warming agent holding sheet 13, the pair of leak-proof walls 7W, 7W and the surface sheet 7a also extend to the abdomen of the wearer. Some space can be facilitated. Then, the warmed air can be retained in the space. Thereby, in addition to the plurality of sheet compressing portions 67 and the plurality of absorbent body compressing portions 60, the space on the abdomen side of the wearer can also keep the skin warm with warm air. As a result, it is possible to further improve the durability of the warm feeling.

In another embodiment, the leak-proof wall 7W has a structure in which two or more sheets are laminated. FIG. 10 is a cross-sectional view of a sanitary napkin 1 according to another embodiment taken along the center line CW in the width direction. In this case, the leak-proof walls 7W are formed at both ends in the width direction W of the surface sheet 7a. Specifically, the pair of leak-proof walls 7W, 7W has both ends in the width direction W of the topsheet 7a folded back inward in the width direction W of the topsheet 7a and on the non-skin side (downward in the thickness direction T). As a result, it is formed in a loop shape when viewed from the longitudinal direction L. The upper part of the leak-proof wall 7W in the thickness direction T, that is, the upper part of the loop is the upper layer 7W1 of the leak-proof wall 7W, and the lower part, that is, the lower part of the loop is the lower layer 7W2 of the leak-proof wall 7W. and In that case, the leak-proof wall 7W can be said to have a structure in which two-layered sheets of the upper layer 7W1 and the lower layer 7W2 are laminated. When such a sanitary napkin 1 is worn on the wearer's clothes, the hollow bulging portions of the pair of leak-proof walls 7W, 7W, i.e., the loop-shaped portions composed of the upper layer 7W1 and the lower layer 7W2 absorb It protrudes outside the body 11 . As a result, when the sanitary napkin 1 is sandwiched between the wearer's legs in the width direction W and the absorbent body 11 is deformed along the shape of the wearer's crotch, these loop-shaped portions are not affected by the deformation of the absorbent body 11. It can be easily deformed by following. Therefore, the loop-shaped portions (the pair of leak-proof walls 7W, 7W) can make the wearer perceive cushioning properties, and can maintain close contact with the crotch of the wearer. As a result, the anti-leakage wall 7W can provide a good feeling of wearing and suppress lateral leakage of excrement. In addition, according to such a configuration, when the sanitary napkin 1 is worn by the wearer, a space P4 is formed between the pair of leak-proof walls 7W, 7W and the surface sheet 7a and the loop-shaped portion. It is possible to make it more difficult to release the air held in the space to the outside. Therefore, in addition to the plurality of sheet compressing units 67 and the plurality of absorbent body compressing units 60, it is possible to further retain the heated air even in those spaces. This allows the warm air to keep the skin warmer. As a result, it is possible to further improve the durability of the warm feeling.

In yet another embodiment, the leak-proof wall 7W has a structure in which two or more sheets are laminated. FIG. 11 is a cross-sectional view along the widthwise center line of a sanitary napkin according to yet another embodiment. In this case, the leak-proof wall 7W is formed at the inner end portion in the width direction W of each of the pair of side seats. Specifically, each of the pair of leak-proof walls 7W, 7W has, in the width direction W, a lower layer 7W2 with an outer edge serving as a fixed end, and an inner edge connected to the inner edge of the lower layer 7W2. and an upper layer 7W1 whose outer edge is a free end. It should be noted that the inner edge of the lower layer 7W2 can be said to be a free end because it is not substantially fixed. That is, the height of the leak-proof wall 7W in the thickness direction T can be increased, and the space formed by the pair of leak-proof walls 7W, 7W and the surface sheet 7a can be made wider. According to such a configuration, when the sanitary napkin 1 is worn by the wearer, the air held in the space created by the pair of leak-proof walls 7W, 7W and the surface sheet 7a and the upper layer 7W1 and the lower layer 7W2 It is possible to make it more difficult for the air remaining between to be released to the outside, and to retain more air. Therefore, in addition to the plurality of sheet compressing units 67 and the plurality of absorbent body compressing units 60, it is possible to further retain the warmed air in these spaces. This allows the warm air to keep the skin warmer. As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, the liquid-impermeable sheet 9 The basis weight of the second adhesive (not shown) that bonds the absorbent body 11 to the absorbent body 11 is large. Here, although the liquid-impermeable sheet 9 is impermeable, it may have some air permeability. Therefore, by relatively increasing the basis weight of the second adhesive, it is possible to cover the gaps related to ventilation on the surface of the skin side of the liquid-impermeable sheet 9. The impermeability of the impermeable sheet 9 can be further enhanced. Therefore, the air warmed by the warming effect can be more stably held closer to the skin than the liquid-impermeable sheet 9 . As a result, it is possible to further improve the durability of the warm feeling.

In a preferred aspect of the present embodiment, when the sanitary napkin 1 is folded and individually packaged, the portion outside the pair of longitudinal first folding lines F1 and longitudinal second folding lines F2 in the width direction W is , and both fold lines as base axes, and are configured to be folded toward the surface on the skin side. Therefore, in the sanitary napkin 1, the positions of the pair of longitudinal first folding lines F1 and the second longitudinal folding lines F2 are bent, and the portions outside the both folding lines (the pair of outer portions) are directed toward the skin. Easier to get up. Therefore, when the sanitary napkin 1 is worn, in the width direction W, the pair of outer portions pushes against the skin surface in an attempt to stand up, thereby making it easier for the inner central portion to separate slightly from the skin surface than the pair of outer portions. Become. That is, a gap is likely to occur between the skin surface and the central portion. Therefore, the air warmed by the warming effect can be further retained in the gap. As a result, it is possible to further improve the durability of the warm feeling.

As a preferred aspect of the sanitary napkin 1 of the present embodiment, in the longitudinal direction L, the distance between the widthwise center line CW and the front edge 11E1 of the absorbent body 11 is , and the front edge of the sanitary napkin 1 . In other words, in the region of the sanitary napkin 1 on the front side in the longitudinal direction L of the center line CW in the width direction, the length of the region in the longitudinal direction L where the absorbent core 11 exists is equal to the length of the region in the longitudinal direction L where the absorbent core 11 does not exist. longer than the length of L. Therefore, in the front region of the sanitary napkin 1 in the longitudinal direction L, a sufficient region in the longitudinal direction L of the absorbent body 11 capable of absorbing liquid excrement can be secured. Therefore, when the sanitary napkin 1, which has the warmth-sensing body 5 on the front side in the longitudinal direction L and has a relatively long front portion, is worn on an underwear, the wearer does not have to worry about the protrusion of the front end portion. Even if the sanitary napkin 1 is worn with the sanitary napkin 1 shifted rearward more than necessary, a sufficient area for the absorbent body 11 can be secured in the front area of the sanitary napkin 1, thereby suppressing leakage of excrement from the front side. can. From the viewpoint of suppressing leakage of excrement from the front side, the lower limit of the length of the front region 3a of the absorbent main body 3 is preferably 110% to 130% of the length of the warming main body 5. From the viewpoint of sufficiently obtaining the effect of (1), the upper limit is preferably 300% to 200% or less of the length of the warming body 5 .

(Materials, etc. in sanitary napkin 1)
Next, each material of the sanitary napkin 1 in each embodiment will be described.

The warming agent-holding sheet 13, the liquid-permeable sheet 7, and the absorbent 11 as functional layers in each of the above embodiments are warming components that activate TRP channels (thermoreceptors (thermal receptors)). and a solvent component, a warming agent 51, and a warming agent 52 are provided.

The warming agents 50, 51, 52 include, for example, a warming component that activates TRP channels and a solvent component. The warming component is not particularly limited as long as it activates the TRP channel, and examples thereof include agonists to the TRPV1 receptor, agonists to the TRPV3 receptor, etc., and agonists to the TRPV1 receptor are preferred. This is because the TRPV1 receptor has a high activation temperature threshold of more than 43° C. and can impart a high sense of warmth to the wearer.

The warming component is preferably a plant-derived compound from the viewpoint of comfort of the wearer. Examples of warming ingredients include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, and N-acylcrocodile. lanamide, nonanoic acid vanillylamide, polyhydric alcohol, red pepper powder, red pepper tincture, red pepper extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivatives (examples: vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl lylhexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratial alcohol derivative, substituted benzyl alcohol derivative, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger Oils, gingerols, gingerones, hesperidins, and pyrrolidone carboxylic acids, and any combination thereof. Among them, the warming component is preferably not capsaicin from the viewpoint that the wearer hardly feels pain, and vanillyl alcohol alkyl ether derivatives (examples: vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillylhexyl ether), ginger extract, ginger oil, gingerol and gingerone, and any combination thereof are more preferred.

The solvent component is not particularly limited as long as it can contain a warming component, and examples thereof include lipophilic solvents and hydrophilic solvents. Such a solvent component can dissolve or disperse the warming component. Examples of lipophilic solvents include oils and fats. Examples of fats and oils include natural oils (eg, fatty acid esters such as triglycerides, coconut oil, linseed oil, etc.), hydrocarbons (eg, paraffin (eg, liquid paraffin)), and the like. Hydrophilic solvents include, for example, water and alcohols. Examples of alcohols include lower alcohols such as methanol, ethanol, ethylene glycol and glycerin, and higher alcohols such as capryl alcohol, lauryl alcohol and myristyl alcohol. Among them, as the solvent component, oils (lipophilic solvents) or alcohols (hydrophilic solvents) are preferable from the viewpoint of easy control of volatility, particularly easy reduction of volatility. In addition, from the viewpoint of less inhibition of absorbability, the solvent component is preferably a lipophilic solvent.

It should be noted that the warming agent 51 of the liquid permeable sheet 7 and the warming agent 52 on the surface of the absorbent body 11 have the property that it is difficult for liquid excrement to flow out to lower layers (eg, the absorbent body 11, the lower part of the absorbent body 11). It is preferable to coexist with a durable hydrophilic oil agent (durable hydrophilic agent) having. That is, it preferably contains a durable hydrophilic oil agent as a solvent component. The durable hydrophilic oil agent is not particularly limited, and those coated or kneaded into fibers can be employed in the technical field. Examples of durable hydrophilizing agents include a mixture of an alkyl phosphate ester salt having 10 to 30 carbon atoms and a betaine compound, sulfate ester salt or sulfonate salt having 10 to 30 carbon atoms, an alkyl phosphate ester salt and polyether modification. A mixture with silicone and the like are included. Therefore, it is possible to prevent the warming agents 51 and 52 from migrating to the lower layer due to excrement. That is, it is possible to maintain the warm-sensitive material in a portion relatively close to the skin. As a result, it is possible to further improve the durability of the warm feeling. In another embodiment, at least one of the constituent fibers of the liquid permeable sheet 7 on which the warming agent 51 is arranged and the constituent fibers of the absorbent body 11 on which the warming agent 52 is arranged is pretreated with a durable hydrophilic oil agent. As a result, the constituent fibers themselves are imparted with the properties of a durable hydrophilic oil agent.

The concentration of the warming component of the warming agent 50 is preferably 1 to 50 mass %, more preferably 3 to 30 mass %, still more preferably 5 to 15 mass %. This is from the viewpoint of the effect of warmth. In addition, in the sanitary napkin 1, the basis weight of the warming component in the warming agent 50 is preferably 0.001 to 30 g/m ² , more preferably 0.01 to 20 g/m ² , and even more preferably. is between 0.1 and 10 g/m ² . This is from the viewpoint of giving a feeling of warmth to the wearer.

In the sanitary napkin 1, the warming agent contains, in addition to the warming component and solvent component described above, at least one other component having a desired action within a range that does not impede the effect of imparting a warm feeling to the wearer. be able to. Such at least one other component includes, for example, drugs such as antibacterial agents, skin astringents, and anti-inflammatory agents, vitamins, amino acids, zeolite, hyaluronic acid, collagen, petrolatum, trehalose, pH adjusters, moisturizers, Perfume and the like.

The warming agent of the sanitary napkin 1 does not easily cause low-temperature burns and does not easily soften the adhesive part 72, etc., unlike exothermic agents that generate heat themselves. In addition, the adhesive portion 72 and the like are less likely to remain on underwear or the like, which is preferable.

However, the warming agent 50, the warming agent 51, and the warming agent 52 may contain exothermic agents. In that case, the warming agent 50, the warming agent 51, and the warming agent 52 include, for example, a particulate, paste, or sheet exothermic agent containing an exothermic component and a solvent component.

The warming agent 50, the warming agent 51, and the warming agent 52 are water-disintegrable protective materials to prevent them from volatilizing or migrating to other areas before the sanitary napkin 1 is used. , for example, may be protected by microcapsules. A microcapsule encloses a functional agent, and when it comes into contact with a liquid (eg, menstrual blood, urine, sweat), it disintegrates and releases the functional agent to the outside. The released functional agent evaporates due to the wearer's body temperature, etc., or comes into contact with the wearer's skin, thereby exerting a predetermined function on the wearer.

Materials for microcapsules include, for example, sugars such as monosaccharides (example: glucose), disaccharides (example: sucrose) and polysaccharides (example: dextrin, glucomannan, sodium alginate, water-soluble starch), gelatin, Water-soluble polymers (examples: polyvinyl alcohol, polyvinyl acetate) and the like can be mentioned.

Microcapsules are commercially available, such as INCAP™, available from Symrise. Alternatively, microcapsules can be produced, for example, by dissolving the material of microcapsules in water to form an aqueous solution, mixing a functional agent and a surfactant in the aqueous solution, and drying under reduced pressure while spraying the aqueous solution. can be done.

In the sanitary napkin 1, the material of the liquid-permeable sheet 7 is not particularly limited as long as it has liquid-permeability. be done. As the fabric, a non-woven fabric is preferable from the viewpoint of ease of manufacturing the sanitary napkin 1 . Nonwoven fabrics include, for example, air-laid pulp, air-through nonwoven fabrics, spunbond nonwoven fabrics, point-bond nonwoven fabrics, spunlace nonwoven fabrics, needle-punched nonwoven fabrics, meltblown nonwoven fabrics, and combinations thereof (example: SMS). Among them, as the nonwoven fabric, an air-through nonwoven fabric is preferable. The liquid-permeable sheet 7 preferably has a basis weight of 5-100 g/m ² , more preferably 10-50 g/m ² . The liquid permeable sheet 7 preferably has a fiber density of 0.001 g/cm ³ to 0.6 g/cm ³ , more preferably 0.003 g/cm ³ to 0.1 g/cm ³ .

Examples of fibers that make up the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. Natural fibers include, for example, pulp fibers and regenerated cellulose fibers. Regenerated cellulose fibers include, for example, rayon fibers. Semi-synthetic fibers include, for example, semi-synthetic cellulose fibers such as acetate fibers. Synthetic fibers include, for example, thermoplastic fibers. Examples of thermoplastic fibers include polyolefin polymers such as polyethylene and polypropylene, polyester polymers such as polyethylene terephthalate (PET), polybutylene terephthalate and polypentylene terephthalate, and polyamides such as nylon 6 and nylon 6,6. Examples include fibers formed from polyacrylonitrile-based polymers, acrylic polymers, polyacrylonitrile-based polymers, modified products thereof, or combinations thereof. Examples of the perforated film include polyethylene or polypropylene sheets having a plurality of perforations.

In addition, it is preferable that the liquid-permeable sheet 7 (first sheet member) is an air-through nonwoven fabric. The air-through nonwoven fabric has a net surface facing the net for transportation during manufacture and a non-net surface opposite to the net surface. In this case, the net surface of the air-through nonwoven fabric is arranged facing the skin side, and the non-net surface is arranged facing the non-skin side. The air-through nonwoven fabric has large voids between constituent fibers on the non-net surface. Therefore, in the sanitary napkin 1, by arranging the warming agent 51 (warming part) on the non-net surface arranged on the non-skin side, the warming agent 51 can be easily held in the gaps between the constituent fibers. As a result, the warming agent 51 can be released continuously, and the durability of the warming sensation can be further improved. Moreover, after the warming agent 51 is consumed or washed away by waste, the warmed air can still be retained in the void. As a result, it is possible to further improve the durability of the warm feeling. In addition, since the gaps between the constituent fibers of the net surface are small, the net surface can be brought into contact with the skin smoothly, and the wearer's feeling of wearing can be improved.

The surface sheet 7a is preferably made of hydrophilic fibers (eg, cotton, rayon, wool, silk). As a result, moisture including perspiration can be easily drawn into and held in the constituent fibers. This makes it difficult for water to remain on the surface of the constituent fibers, makes it difficult for water to come into contact with the skin, and makes it difficult for the skin to feel cold. As a result, it is possible to further improve the durability of the warm feeling.

In the sanitary napkin 1, the material of the liquid diffusion sheet 41 is not particularly limited as long as it is a sheet having liquid permeability and liquid diffusion properties. , specifically, those enumerated as the material of the liquid-permeable sheet 7 can be mentioned. Also, the liquid diffusion sheet 41 preferably has a basis weight of 10 to 200 g/m ² , more preferably 20 to 100 g/m ² . The liquid diffusion sheet 41 preferably has a fiber density of 0.002 g/cm ³ to 0.8 g/cm ³ , more preferably 0.004 g/cm ³ to 0.2 g/cm ³ . At this time, the fiber density of the liquid diffusion sheet 41 is preferably higher than the fiber density of the liquid permeable sheet 7 . In other words, the fiber density of the liquid permeable sheet 7 is preferably lower than the fiber density of the liquid diffusion sheet 41 .

In the sanitary napkin 1, the material of the liquid-impermeable sheet 9 is not particularly limited as long as it is liquid-impermeable and air-impermeable. This is from the viewpoint of making it difficult for the air warmed by the warming effect of the warming agent 50 to escape from the region between the liquid-impermeable sheet 9 and the skin. Examples of materials for the liquid-impermeable sheet 9 include synthetic resin films such as polyethylene and polypropylene, nonwoven fabrics such as spunbond and spunlace bonded to synthetic resin films, and multi-layer nonwoven fabrics such as SMS. A synthetic resin film having The liquid-impermeable sheet 9 preferably has a basis weight of 10-50 g/m ² , more preferably 15-30 g/m ² .

In the sanitary napkin 1, the material of the warming agent holding sheet 13 includes, for example, those listed as the material of the liquid permeable sheet 7, a porous resin sheet such as a sponge sheet, and the like, impregnated with the warming agent 50. possible ones. Specifically, when the solvent component of the warming agent 50 is a lipophilic solvent, synthetic fiber fabrics such as nonwoven fabrics, woven fabrics, and knitted fabrics can be used, and synthetic fiber nonwoven fabrics are preferred. When the solvent component of the warming agent is a hydrophilic solvent, examples thereof include fabrics composed of cellulosic fibers, such as nonwoven fabrics, woven fabrics, knitted fabrics, etc., preferably tissues and air-laid pulps composed of pulp fibers. mentioned. As another embodiment, when a heat-retaining main body having a heat-retaining function is used instead of the heat-sensing main body 5, the material of the heat-retaining sheet that replaces the heat-sensing agent-holding sheet 13 is, for example, a heat-sensing agent-holding sheet. 13, and in this case the warming agent 50 is not impregnated.

In the sanitary napkin 1, examples of materials for (the absorbent core of) the absorbent body 11 include pulp fibers and superabsorbent polymers. When the absorbent body 11 has a core wrap, the material of the core wrap includes, for example, tissue. The basis weight of the absorbent body 11 is, for example, 10 to 500 g/m ² , preferably 100 to 400 g/m ² .

The absorbent body 11 preferably contains a superabsorbent polymer, and the ratio of the superabsorbent polymer to the absorbent body 11 is preferably 5 to 50% by mass. Thus, by setting the ratio of the superabsorbent polymer to the absorbent body 11 within a predetermined range, when the superabsorbent polymer absorbs the excrement and swells, the gaps between the adjacent swollen superabsorbent polymers are formed. can be generated. Therefore, the air warmed by the warming effect can be further retained in the gap. As a result, it is possible to further improve the durability of the warm feeling. If the ratio is lower than 5% by mass, voids generated when swollen are reduced, and if the ratio is higher than 50% by mass, gel blocking occurs due to the superabsorbent polymer, and the absorption performance of the sanitary napkin 1 is reduced. will decline.

In the sanitary napkin 1, materials for the adhesive portions 71, 72, 73, etc. include hot-melt adhesives such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene- Pressure-sensitive adhesives or heat-sensitive adhesives mainly composed of rubber such as isoprene-styrene (SIS) or olefins such as linear low-density polyethylene; water-soluble polymers (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-sensitive adhesives made of water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.).

In the sanitary napkin 1, the first adhesive and the second adhesive include, for example, hot-melt adhesives. Hot melt adhesives include, for example, olefin hot melt adhesives, ethylene-vinyl acetate copolymer hot melt adhesives, polyamide hot melt adhesives, thermoplastic elastomer hot melt adhesives, and reactive hot melt adhesives. etc. The pattern of application of the first adhesive and the second adhesive includes, for example, continuous or intermittent omega patterns, spiral patterns, and line patterns. The basis weight of the first adhesive and the second adhesive is, for example, preferably 2-50 g/m ² , more preferably 5-30 g/m ² . It is preferable that the basis weight of the second adhesive is greater than the basis weight of the first adhesive.

In the sanitary napkin 1, examples of the material of the individual packaging sheet 43 include polyolefin polymers such as polyethylene and polypropylene. The individual wrapping sheet 43 may include an airtight layer from the viewpoint of enhancing airtightness. Materials for the airtight layer include, for example, ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer, such as vinylidene chloride methyl acrylate copolymer, polyvinyl alcohol, nylon, such as nylon 6, aluminum foil, and substrate film (polyethylene terephthalate, etc.). Alumina, silica, etc. are vapor-deposited.

The absorbent article (example: sanitary napkin) of the present invention is not limited to the above-described embodiments, and may be combined with each other without departing from the scope and spirit of the present invention. It is possible, for example, to apply technology.

1 sanitary napkin 7 liquid-permeable sheet (first sheet member)
9 liquid-impermeable sheet (second sheet member)
11 Absorber 51, 52 Warm Sensing Agent 60 Absorber Squeezed Part (Absorber Concave)
67 sheet pressing portion (sheet member concave portion)

Claims (14)

A liquid-permeable first sheet member having a longitudinal direction, a width direction, and a thickness direction, overlapping with an absorbent body in the thickness direction, positioned closer to the skin than the absorbent body, and having liquid permeability. and a liquid-impermeable second sheet member that overlaps the absorbent body in the thickness direction, is located on the non-skin side of the absorbent body, and has liquid impermeability,
At least one of the absorbent body and the first sheet member has a warming part containing a warming agent,
The first sheet member includes a plurality of sheet member recesses that are recessed from the skin-side surface toward the non-skin-side surface in a region that overlaps the heat-sensing portion in plan view,
The absorber has a plurality of absorbent core recesses that are recessed from the skin-side surface toward the non-skin-side surface at positions different from the plurality of sheet member recesses in a region that overlaps the heat-sensing portion in plan view. including
The second sheet member is impermeable,
The thickness of the central portion of the absorbent body in the width direction is thinner than the thickness of both ends of the absorbent body in the width direction,
absorbent article. A liquid-permeable first sheet member having a longitudinal direction, a width direction, and a thickness direction, overlapping with an absorbent body in the thickness direction, positioned closer to the skin than the absorbent body, and having liquid permeability. and a liquid-impermeable second sheet member that overlaps the absorbent body in the thickness direction, is located on the non-skin side of the absorbent body, and has liquid impermeability,
At least one of the absorbent body and the first sheet member has a warming part containing a warming agent,
The first sheet member includes a plurality of sheet member recesses that are recessed from the skin-side surface toward the non-skin-side surface in a region that overlaps the heat-sensing portion in plan view,
The absorber has a plurality of absorbent core recesses that are recessed from the skin-side surface toward the non-skin-side surface at positions different from the plurality of sheet member recesses in a region that overlaps the heat-sensing portion in plan view. including
The second sheet member is impermeable,
The first sheet member is an air-through nonwoven fabric,
The air-through non-woven fabric is arranged such that the net surface facing the net for transportation at the time of manufacture is directed to the skin side, and the non-net surface opposite to the net surface is directed to the non-skin side,
The heat sensing part is arranged on the non-net surface,
absorbent article. The absorbent body has an excretion opening contact area that is an area that contacts the wearer's excretory opening and a non-excretion opening contact area that is an area other than the excretory opening contact area,
The density of the number of arrangement of the absorbent body recesses in the excretion opening contact area is higher than the density of the number of arrangement of the absorbent body recesses in the non-excretion opening contact area,
The absorbent article according to claim 1 or 2 . The first sheet member is
a surface sheet;
an auxiliary sheet in contact with the non-skin side of the surface sheet;
including
Each of the plurality of sheet member recesses is formed by pressing from the skin side surface of the top sheet toward the non-skin side surface of the auxiliary sheet so as to integrate the top sheet and the auxiliary sheet. including the pressing section,
4. The absorbent article according to any one of claims 1-3. The first sheet member is
a surface sheet formed of a nonwoven fabric;
an auxiliary sheet made of non-woven fabric, which is in contact with the non-skin side of the surface sheet;
including
The fiber density of the top sheet is lower than the fiber density of the auxiliary sheet,
5. The absorbent article according to any one of claims 1-4. The first sheet member is
a surface sheet;
a pair of side sheets coupled to both sides of the top sheet in the width direction;
including
a leak-proof wall extending along the longitudinal direction at each of the widthwise inner end portions of each of the pair of side sheets or each of the widthwise end portions of the topsheet;
The leak-proof wall has an outer edge as a fixed end and an inner edge as a free end in the width direction,
The warm-sensing part is located in a region overlapping with the topsheet in a plan view,
6. The absorbent article according to any one of claims 1-5. further comprising a front warming part located on the front side of the absorbent body in the longitudinal direction and containing a warming agent;
One surface of the front heat sensing portion abuts the top sheet and the pair of side sheets, and the other surface abuts the second sheet member.
The absorbent article according to claim 6. The leak-proof wall has a structure in which two or more sheets are laminated,
The absorbent article according to claim 6 or 7. The warming part contains the warming agent and a durable hydrophilic oil agent.
9. The absorbent article according to any one of claims 1-8. The first sheet member is a surface sheet,
The surface sheet is formed of hydrophilic fibers,
10. The absorbent article according to any one of claims 1-9 . The absorbent body contains a super absorbent polymer,
The ratio of the superabsorbent polymer to the absorber is 5 to 50% by mass,
11. The absorbent article according to any one of claims 1-10 . The basis weight of the second adhesive for bonding the second sheet member and the absorbent body is greater than the basis weight of the first adhesive for bonding the first sheet member and the absorbent body,
12. The absorbent article according to any one of claims 1-11 . Further comprising a pair of longitudinal fold lines arranged on both sides of the absorbent article across the longitudinal center line, extending along the longitudinal direction, and spaced apart in the width direction,
When the absorbent article is folded and individually packaged, in the width direction, the portion of the absorbent article outside the pair of longitudinal fold lines is the absorbent article with the pair of longitudinal fold lines as the base axis. is configured to be folded toward the skin-side surface of the sexual article,
13. The absorbent article according to any one of claims 1-12 . further comprising an absorbent main body including the absorbent body, and a warming main body positioned on the front side of the absorbent main body in the longitudinal direction and containing a warming agent;
14. The absorbent article according to any one of claims 1-13 .

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