KR20210134632A - absorbent article - Google Patents

Abstract

An absorbent article having a warm feeling portion, wherein the absorbent article is capable of improving the effect that the wearer can continuously perceive warmth, that is, the durability of the warm feeling is provided. The absorbent article includes an absorbent body (11), a first sheet member (7) positioned on the skin side from the absorbent body and having liquid permeability, and a second sheet member (9) positioned on a non-skin side from the absorbent body and having liquid impermeability. . At least one of the absorber and the first sheet member is provided with a warmth-sensitive portion containing the heat-sensitive agent (52, 51). The first sheet member includes a plurality of sheet member concave portions 67 in a region overlapping the warmth sensing portion in plan view. The absorbent body includes a plurality of absorber recesses 60 recessed from the skin-side surface toward the non-skin-side surface at positions different from the plurality of sheet member recesses in the region overlapping the warm-sensitive portion in plan view. do. The second sheet member is non-breathable.

Description

absorbent article

The present invention relates to absorbent articles.

There is known an absorbent article comprising a warm-sensitive portion having a warming agent that allows a wearer of the absorbent article to perceive a feeling of warmth through the skin. For example, Patent Document 1 discloses an absorbent article in which an agent capable of transmitting perception to a wearer without creating an external condition perceived by the wearer is inserted into one or more portions. In Patent Document 1, a cooling agent (cooling agent) and a warming agent (warming agent) are mentioned as agents.

Patent Document 1: Japanese Patent Publication No. 2004-528090

In the absorbent article in which the warming agent is disposed as in Patent Document 1, even if the warming agent reaches the wearer's skin and the wearer perceives warmth, excrement (eg, urine, menstrual blood) adheres to the skin or absorbs the excrement to lower the temperature. The absorbent material may come into contact with the skin through a topsheet or the like. In that case, there is a possibility that the warming agent may hardly reach the skin due to excretion, or the skin may become cold due to the absorbent body having a lowered temperature, so that it may become difficult for the wearer to continue to perceive the warmth of the warming agent. Therefore, in an absorbent article like Patent Document 1, there is room for improvement with respect to the persistence of the warm feeling that the wearer continues to perceive warmth.

Accordingly, it is an object of the present invention to provide an absorbent article having an effect of allowing the wearer to continuously perceive warmth, that is, to improve the durability of the sense of warmth, in an absorbent article having a warm feeling portion.

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

ADVANTAGE OF THE INVENTION According to this invention, in the absorbent article which has a warm feeling part, it is possible to provide the absorbent article which can improve the effect that a wearer can perceive warmth continuously, ie, the durability of a feeling of warmth.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the structural example of the sanitary napkin which concerns on embodiment.
FIG. 2 is a cross-sectional view taken along a longitudinal centerline in FIG. 1 ;
3 is a bottom view showing a configuration example of the sanitary napkin according to the embodiment.
4 is a plan view showing a configuration example of the liquid-permeable sheet according to the embodiment.
FIG. 5 is a cross-sectional view taken along line VV in FIG. 4 .
It is a top view which shows the structural example of the absorber which concerns on embodiment.
FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6 .
Fig. 8 is a schematic diagram showing the arrangement of the warming agent in the absorber according to the embodiment.
Fig. 9 is a schematic diagram showing the arrangement of the warming agent in the liquid-permeable sheet according to the embodiment.
10 is a cross-sectional view taken along a center line in the width direction of the sanitary napkin according to another embodiment.
11 is a cross-sectional view taken along a center line in the width direction of the sanitary napkin according to still another embodiment.

Specifically, the disclosure of the present invention relates to the following aspects.

[Aspect 1]

An absorbent body, a first sheet member having a longitudinal direction, a width direction, and a thickness direction, the absorber overlapping in the thickness direction, the first sheet member being located on the skin side of the absorbent body and having liquid permeability, and the absorber and the thickness direction overlapping it An absorbent article comprising a second sheet member located on a non-skin side of the absorbent body and having liquid impermeability, wherein at least one of the absorbent body and the first sheet member includes a warming section containing a warming agent, and the first sheet The member includes, in a region overlapping with the warmth-sensitive portion in plan view, a plurality of sheet member concave portions recessed from the skin-side surface toward the non-skin-side surface, wherein the absorbent body overlaps the warm-sensitive portion in plan view. and a plurality of absorbent body recesses recessed from the skin-side surface toward the non-skin-side surface at positions different from the plurality of sheet member recesses in the region to be used, wherein the second sheet member is non-breathable. article.

In this absorbent article, when worn by the wearer, a warming effect can be obtained in that the wearer can perceive warmth by the warming agent of at least one of the absorbent body and the first sheet member. At that time, since the first sheet member includes the plurality of sheet member recesses, at least a part of the air warmed by the effect of the warm feeling can be held in the recesses of the plurality of sheet member recesses. Further, since the absorber includes the plurality of absorber recesses, at least a part of the air warmed by the effect of the warm feeling can be held in the recesses of the plurality of absorber recesses. Here, since the positions of the sheet member concave portion and the absorber concave portion are different from each other, if the plurality of sheet member concave portions and the plurality of absorber concave portions are aligned, a large amount of warmed air can be retained. And, by the absorbent body or the second sheet member which is located on the non-skin side and is non-breathable from the first sheet member, it is possible to roughly confine the held air to the skin side so that it does not flow out. Thereby, in addition to obtaining the effect of a feeling of warmth by the warming agent, even when it is difficult to reach the skin due to excretion or when the temperature of the absorbent body is lowered, the skin can be kept warm with warm air, thereby increasing the effect of the feeling of warmth. can be obtained Thereby, it becomes possible to improve the durability of a feeling of warmth.

[Mode 2]

The absorbent body has an excretion port contact region, which is a region in contact with the excretory port of the wearer, and an excretion port non-contact region, which is a region other than the excretion port contact region, wherein the density of the number of batches of the absorber recesses in the excretion port contact region is determined by the excretion port non-contact region. The absorbent article according to aspect 1, wherein the density of the number of batches of the absorber recessed portions in the region is higher.

In this absorbent article, the density of batches of absorber recesses in the excretory opening contact region was higher than the batch number density of absorbent body recesses in the excretory non-contacting region. Therefore, when the absorbent article is mounted on the wearer, it is possible to retain more of the warm air in the excretory opening contact area. Therefore, it is possible to keep the skin in the vicinity of the excretory port, which is sensitive and susceptible to temperature changes, more warm and continuously kept. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Mode 3]

The absorbent article as described in aspect 1 or 2 whose thickness of the said width direction center part in the said absorber is thinner than the thickness of the said width direction both ends in the said absorber.

In this absorbent article, the thickness of the center part of the width direction in an absorber was made thinner than the thickness of the both ends located on both sides of the center part. Therefore, when the absorbent article is attached to the wearer and both ends of the absorbent body come into contact with the skin (via the sheet member) in the width direction, it is possible to easily create a slight gap between the central portion of the absorbent body and the skin. And, it is possible to further maintain the warm air in the gap. Therefore, it is possible to keep the skin in the vicinity of the excretory port, which is sensitive and susceptible to temperature changes, which the central portion of the absorber can come into contact with, more warmly and continuously insulated. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 4]

The first sheet member includes a topsheet and a liquid diffusion sheet in contact with a non-skin side of the topsheet, and each of the plurality of sheet member recesses is configured such that the topsheet and the liquid diffusion sheet are integrated with each other. The absorbent article according to any one of aspects 1 to 3, comprising a crimping portion formed by being pressed from the skin-side surface of the topsheet toward the non-skin-side surface of the liquid diffusion sheet.

In the present absorbent article, the sheet member recessed portion includes a crimping portion for integrating the topsheet and the liquid diffusion sheet in contact with each other. In other words, the topsheet and the liquid diffusion sheet are coupled to each other at the plurality of crimping portions, but not coupled at locations other than the crimping portions. Therefore, when the absorbent article is mounted on the wearer, the top sheet and the liquid diffusion sheet are spaced apart in the thickness direction between adjacent crimping portions (not adjacent), so that a slight gap can be easily generated. And, it is possible to further maintain the warm air in the gap. Therefore, the skin can be insulated with warm air not only in the plurality of sheet member recesses but also in the gaps therebetween. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 5]

The first sheet member includes a topsheet formed of a nonwoven fabric, and an auxiliary sheet in contact with the non-skin side of the topsheet and formed of a nonwoven fabric, wherein the fiber density of the topsheet is lower than the fiber density of the auxiliary sheet. The absorbent article in any one of 1-4.

In the present absorbent article, the fiber density of the topsheet is lower than that of the auxiliary sheet in contact with its non-skin side. Therefore, while stably suppressing the backflow of absorbent excrement from the auxiliary sheet with high fiber density to the topsheet side, the air warmed by the effect of warmth can be further retained in the voids between the fibers of the topsheet with low fiber density. have. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 6]

The first sheet member includes a topsheet and a pair of side sheets bonded to both sides of the topsheet in the width direction, and an end of each of the pair of side sheets in the width direction, or the at each of both ends of the topsheet in the width direction, a leak barrier extending along the longitudinal direction, wherein the leak barrier has an outer end edge as a fixed end in the width direction, and an inner end end in the width direction. The absorbent article according to any one of aspects 1 to 5, wherein an edge is a free end, and the warm-sensitive portion is located in a region overlapping the topsheet in plan view.

In this absorbent article, a pair of leak prevention walls are provided on both sides of the width direction of a topsheet. Therefore, when the absorbent article is put on the wearer and the pair of leak barriers are slightly raised toward the skin side, the pair of leak barriers and the top sheet can easily create a small space. And, it is possible to keep more warm air in that space. Thereby, in addition to the some sheet member recessed part and the some absorber recessed part, the skin can be heat-retained with the warm air also in the space. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Mode 7]

The absorbent body further includes a front warmth-sensing portion positioned in front of the absorbent body in the longitudinal direction and containing a warming agent, wherein the front-side warmth-sensing portion has one surface in contact with the topsheet and the pair of side sheets, and the other surface of the second surface of the absorbent body. The absorbent article according to aspect 6, which is in contact with the sheet member.

The present absorbent article further includes a front warmth-sensing portion containing a warming agent, positioned in front of the absorbent body in the longitudinal direction, that is, on the abdomen side of the wearer. Therefore, when the absorbent article is put on the wearer, the abdominal portion of the wearer can be warmed with the warming agent. In addition, since the pair of leak barriers extend to the front warm sensing portion, it is possible to easily create a small space even in the ventral portion of the wearer by the pair of leak barriers and the top sheet. And, it is possible to maintain the warm air in the space. Thereby, in addition to the plurality of sheet member recesses and the plurality of absorbent body recesses, the skin can be kept warm with the air warmed from the abdominal portion of the wearer even in that space. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Mode 8]

The absorbent article according to Aspect 6 or 7, wherein the leak barrier has a structure in which two or more layers are laminated.

In this absorbent article, the leak prevention wall has a structure in which two or more layers of sheet members are laminated|stacked. Therefore, when the absorbent article is mounted on the wearer, it is possible to make it difficult to release the air held in the space created by the pair of leakproof walls and the topsheet or between the two or more layered sheet members to the outside. And in addition to the some sheet member recessed part and the some absorber recessed part, the heated air can further be hold|maintained also in these spaces. Thereby, the skin can be kept warm with the warm air. This makes it possible to further improve the persistence of the warm feeling.

[Aspect 9]

The absorbent article according to any one of Aspects 1 to 8, wherein the warming portion contains the warming agent and a durable hydrophilic oil agent.

In this absorbent article, the warming agent was made to coexist with a durable hydrophilic emulsion having a characteristic that it is less likely to flow out to a lower layer (eg, an absorbent body, a lower part of an absorbent body) by excretion. Therefore, it is possible to suppress the transfer of the warming agent to the lower layer by excretion. That is, it is possible to maintain the warming material in a portion relatively close to the skin. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 10]

The first sheet member is an air-through nonwoven fabric, and the air-through nonwoven fabric is disposed with a net surface facing the transport net at the time of manufacture facing the skin side, and the vignette surface opposite to the net surface facing the non-skin side The absorbent article according to any one of Aspects 1 to 9, wherein the heat-sensitive portion is disposed on the vignette surface.

In the air-through nonwoven fabric, the voids between the constituent fibers of the vignette surface are large. Therefore, in the present absorbent article, by arranging the warming part on the vignette surface, the warming agent can be easily held in the voids between the constituent fibers, whereby the warming agent can be continuously released, and the durability of the feeling of warmth can be further improved. can Also, after the warming agent is consumed or excreted by excreta, the warmed air can be further retained in the voids. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Mode 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 this absorbent article, since the topsheet is formed of hydrophilic fibers (eg, cotton, rayon, wool, silk), moisture including sweat can be easily put into the constituent fibers and retained. Thereby, it is possible to make it difficult for moisture to remain on the surface of the constituent fibers, to make it difficult to contact moisture with the skin, and to make it difficult to feel the cold on the skin. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 12]

The absorbent article according to any one of Aspects 1 to 11, wherein the absorbent includes a superabsorbent polymer, and the ratio of the superabsorbent polymer to the absorbent is 5 to 50 mass%.

In this absorbent article, the ratio of the superabsorbent polymer to the absorber was 5 to 50 mass%. As described above, by setting the ratio of the superabsorbent polymer to the absorbent body within a predetermined range, when the superabsorbent polymer absorbs excrement and swells, voids can be created between adjacent swollen superabsorbent polymers. For this reason, the air warmed by the effect of a feeling of warmth can further be hold|maintained in the space|gap. Thereby, it becomes possible to further improve the persistence of a warm feeling. When the ratio is lower than 5% by mass, there are fewer voids generated upon swelling, making it difficult to retain warm air. performance is degraded.

[Mode 13]

The absorbent article according to any one of aspects 1 to 12, wherein the basis weight of the second adhesive bonding the second sheet member and the absorber is larger than the basis weight of the first adhesive bonding the first sheet member and the absorber.

In this absorbent article, the basis weight of the 2nd adhesive agent which adhere|attaches the 2nd sheet member and the said absorber was increased. Although the second sheet member has some air permeability even though it is non-breathable, by making the basis weight of the second adhesive relatively large, the gap related to the air permeability of the second sheet member can be covered. The non-breathability of the member can be further improved. Therefore, the air warmed by the effect of a feeling of warmth can be more stably hold|maintained on the skin side rather than the 2nd sheet member. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 14]

The absorbent article further includes a pair of longitudinal cut lines arranged on both sides with the longitudinal center line interposed therebetween, extending along the longitudinal direction, and arranged at intervals in the width direction, wherein the absorbent article is folded and individually When packaged, in the width direction, a portion outside the pair of longitudinal folds in the absorbent article is folded toward the skin-side surface of the absorbent article, with the pair of longitudinal folds as the axis. The absorbent article in any one of aspects 1-13 comprised.

In the present absorbent article, when folded, in the width direction, the portion outside the pair of longitudinal folds in the absorbent article is folded toward the skin-side surface of the absorbent article with the pair of longitudinal folds as the main axis. . Accordingly, in the absorbent article, a crease is formed at the position of the pair of longitudinal folds, and the portion outside the pair of longitudinal folds (a pair of outer parts) tends to stand up toward the skin side. Therefore, when the absorbent article is attached, in the width direction, the inner central portion of the pair of outer portions tends to be slightly separated from the skin surface by pressing the skin surface while the pair of outer portions try to stand up. That is, it becomes easy to produce a space|gap between a skin surface and a center part. For this reason, the air warmed by the effect of a feeling of warmth can further be hold|maintained in the space|gap. Thereby, it becomes possible to further improve the persistence of a warm feeling.

[Aspect 15]

The absorbent article according to any one of Aspects 1 to 14, further comprising: an absorbent body including the absorbent body; and a warm-sensing body positioned in front of the absorbent body in the longitudinal direction and including the warm-sensing portion.

Even if the body temperature is increased by the warming agent, if excrement is present, the excrement becomes cold due to the outside temperature or heat of vaporization, and there is a possibility that the skin may become cold as the cooled excrement adheres to the skin. Therefore, in the present absorbent article, the region where excrement (eg, urine, menstrual blood) is excreted (approximately the central portion in the longitudinal and width directions of the absorbent) and the region where the warming agent is disposed (the warming part) are spaced apart from each other at least in the longitudinal direction. have. That is, the warming agent exists in a place where it is difficult to contact the excrement. Therefore, even if the skin becomes cold by adhering to the skin, for example, the warming agent separated from the excrement can continue to provide a feeling of warmth, thereby suppressing the skin from becoming cold.

Hereinafter, the absorbent article which concerns on embodiment is demonstrated taking a sanitary napkin as an example. However, an absorbent article is not limited to the example, As long as it does not deviate from the meaning of this invention, another absorbent article may be sufficient. Other absorbent articles include, for example, pantyliners, incontinence pads, and disposable diapers.

The configuration of the sanitary napkin 1 according to the present embodiment will be described.

1 to 3 are diagrams showing a configuration example of the sanitary napkin 1 according to the present embodiment. 1 is a plan view showing a state in which the individual packaging sheet 43 of the sanitary napkin 1 is opened and unfolded. FIG. 2 is a cross-sectional view along the longitudinal center line CL (described later) in the sanitary napkin 1 shown in FIG. 1 (excluding the individual packaging sheet 43). Fig. 3 is a bottom view showing the sanitary napkin 1 shown in Fig. 1 (excluding the individual packaging sheet 43). The sanitary napkin 1 of the present embodiment has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other. In the sanitary napkin 1 illustrated in FIG. 1 , the upper side of the drawing is the front (front) or abdominal side in the longitudinal direction L, and the lower side of the drawing is the back (rear) or back side in 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 is referred to as “planar view”, and the shape grasped in plan view is referred to as “planar shape”. ' is said. An arbitrary direction in the plane including the longitudinal direction L and the width direction W is called a "plane direction." When the wearer puts on the sanitary napkin 1, the side relatively close to and farther from the wearer's skin surface in the thickness direction T are referred to as "skin side" and "non-skin side". These definitions are also commonly used for each material of the sanitary napkin 1 .

Both ends of the individually wrapped sheet 43 in the longitudinal direction L are longer outward in the longitudinal direction L than both ends of the sanitary napkin 1 in the longitudinal direction L, and in the width direction W Both ends of the sanitary napkin 1 are formed to be longer outward in the width direction W than both ends in the width direction W of the sanitary napkin 1 . That is, when the sanitary napkin 1 is placed on the individual packaging sheet 43, it can be placed so that the sanitary napkin 1 is not pushed out of the individual packaging sheet 43 in a plan view, whereby the sanitary napkin 1 ), when folded together with the individual packaging sheet 43 , the sanitary napkin 1 can be packaged so that the sanitary napkin 1 does not protrude out of the individual packaging sheet 43 .

The sanitary napkin 1 includes an absorbent body 3 that mainly absorbs liquid excrement (eg, menstrual blood), and a warm body ( 5) is provided. That is, the sanitary napkin 1 is divided into an absorbent body 3 in the rear in the longitudinal direction L and a warm body 5 in the front in the longitudinal direction L. The shape of the absorbent body 3 is roughly that of a general sanitary napkin, and has a pair of wing portions 17 and 17 extending outwardly in the width direction W. As shown in FIG. The shape of the warm body 5 is not particularly limited, and examples thereof include a triangle, a rectangle, a polygon (including a case where the angle is round or a curved side), a circle or an ellipse, the shape of a living organism, or a combination thereof. . The sanitary napkin 1 has a longitudinal center line CL (virtual line) extending in the longitudinal direction L through the center of the width direction W, and each of the pair of wing portions 17 and 17 in the longitudinal direction ( It has a width direction center line CW (virtual line) connecting the centers of L) in the width direction W (extending in the width direction W through the center of the length direction L). In the sanitary napkin 1, the directions and sides toward the longitudinal center line CL are inward and inward in the width direction W, respectively, and the away directions and sides are outward and outward in the width direction W, respectively. On the other hand, the direction and the side toward the width direction center line CW are made inward and inward in the longitudinal direction L, respectively, and the direction and the away direction and the side are made outward and outward in the longitudinal direction L, respectively. In addition, when each of the pair of wing parts 17 and 17 does not exist, the width direction center line CW is the center of the excretory opening contact area 21 (described later) in the absorbent body 3 in the longitudinal direction L. Let it be a line extending in the width direction (W) through In the present embodiment, both are assumed to coincide. Alternatively, when the absorber 11 is of a so-called hourglass shape, the width direction center line CW is at the position where the dimension in the width direction W of the absorber 11 is minimized in the length direction L (both ends are excluded). ) and extending in the width direction (W). Moreover, in another embodiment, the warm-sensing body 5 is not provided.

The sanitary napkin 1 has an absorbent body 3 comprising: a liquid-permeable sheet 7 that comes into contact with the wearer's skin when worn; a liquid-impermeable sheet 9 that comes into contact with clothing (underwear) when worn; An absorbent body (11) is provided between the permeable sheet (7) and the liquid-impermeable sheet (9). In addition, the sanitary napkin 1 has, in the warm body 5, a liquid-permeable sheet 7 that comes into contact with the wearer's skin when worn, and a liquid-impermeable sheet 9 that comes into contact with clothing when worn, and is liquid-permeable. A thermosensitive agent holding sheet 13 is provided between the sheet 7 and the liquid-impermeable sheet 9 . The thermosensitive agent holding sheet 13 is located in front of the absorber 11 in the longitudinal direction L. Further, the liquid-permeable sheet 7 in the absorbent body 3 and the liquid-permeable sheet 7 in the warm-sensitive body 5 are integral sheets. Further, the liquid-impermeable sheet 9 in the absorbent body 3 and the liquid-impermeable sheet 9 in the warm-sensitive body 5 are integral sheets. However, the integral sheet includes not only a case in which the material is a single sheet, but also a sheet in which a plurality of sheets are combined and integrated. The absorbent body 11 in the absorbent body 3 and the warming agent holding sheet 13 in the warming body 5 are separate members. By overlapping the front end of the absorbent body 11 in the longitudinal direction L with the rear end of the warming agent holding sheet 13 in the longitudinal direction L in the thickness direction T, the overlapping portion 15 is formed. do. That is, in the longitudinal direction L, the front edge 11E1 of the absorbent body 11 is located in front of the rear edge 13E2 of the thermosensitive agent holding sheet 13 . In this case, in the overlapping portion 15 , the end of the absorber 11 is disposed on the end of the thermosensitive agent holding sheet 13 . This is for suppressing the leakage of excrement in the front of the longitudinal direction L. In another embodiment, in the case where the function of feeling of warmth is emphasized, in the overlapping portion 15 , the end of the warming agent holding sheet 13 is disposed on the end of the absorber 11 . In another embodiment, the end of the absorbent body 11 and the end of the thermosensitive agent holding sheet 13 do not overlap in a plan view (the overlapping portion 15 does not exist), and their end edges are in contact with each other, or or separated. In another embodiment, the position of the front edge 11E1 in the longitudinal direction L of the absorbent body 11 is the position of the front edge 13E1 in the longitudinal direction L of the thermosensitive agent holding sheet 13. It overlaps with the location, or exists outside it. In other words, the thermosensitive agent holding sheet 13 overlaps the absorbent body 11 over the entire length in the longitudinal direction L. Further, as another embodiment, the warming body 5 is replaced with a heat insulating body of the same shape, and the warming agent holding sheet 13 is replaced with a heat insulating sheet of the same shape that does not contain a warming agent.

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

In the sanitary napkin 1, in the absorbent body 3, the excretory opening contact area 21 is located at the center in the width direction W, slightly in front of the center in the longitudinal direction L in plan view, and other than that in the periphery thereof. The excretory non-contact area 23 is located as the area of . The excretory opening contact region 21 is a region facing or in contact with the excretory opening of the wearer when the sanitary napkin 1 is worn. The excretion opening contact area 21 is determined according to the type and use of the absorbent article. The excretory opening contact region 21 is, for example, near the center slightly forward 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 in the longitudinal direction L of the absorbent body 11 . It becomes and becomes the width of about 1/3 to 3/4 of the total length of the absorber 11 in the width direction W of the absorber 11 in the approximate center of the absorber 11 in the width direction W. When there is a pair of wing parts 17 and 17 as in this embodiment, on the line connecting the center of the longitudinal direction (L) in each of the pair of wing parts (17, 17) in the width direction (W), The center of the longitudinal direction L of the excretory opening contact area 21 is located. Alternatively, when the absorbent body 11 is of a so-called hourglass shape, the length of the excretory opening contact region 21 is at the position where the dimension in the width direction W of the absorber is the smallest except for both ends in the longitudinal direction L of the absorbent body. The center of the direction (L) is located. However, it is assumed that positional displacement within a range of a predetermined length is allowed. The predetermined length is 5% of the length of the absorber 11 in the longitudinal direction L.

The liquid-permeable sheet (first sheet member) 7 overlaps the absorber 11 in the thickness direction T, and is coupled to the topsheet 7a and both sides in the width direction W of the topsheet 7a. A pair of side sheets 7b and 7b is provided. The dimension in the width direction W of the topsheet 7a is approximately the same as the dimension in the width direction W of the absorber 11 . Each side sheet 7b is positioned at the inner end in the width direction W and includes a leak prevention wall 7W extending along the longitudinal direction L. That is, the liquid-permeable sheet 7 includes a pair of leak-proof walls 7W and 7W. Each leak prevention wall 7W has an outer end edge as a fixed end in the width direction W, an inner end edge as a free end, and moves upward in the thickness direction T of the topsheet 7a. is extended The pair of leak prevention walls 7W and 7W are formed so that their free ends can stand up toward the skin side when the sanitary napkin 1 is attached. A pair of leak-proof walls 7W and 7W are formed on the absorbent body 3 and the warm body 5, and while suppressing the leakage of excrement mainly to the outside in the width direction W, the warming body 5 ), it suppresses and maintains the warm air from escaping to the outside in the width direction (W) by the effect of the warmth. In another embodiment, at each of both ends of the topsheet 7a in the width direction W, leak prevention walls 7W extending along the longitudinal direction L are included. In another embodiment, the liquid-permeable sheet 7 does not have a pair of side sheets 7b and 7b. In another embodiment, the liquid-permeable sheet 7 does not have a pair of leak-proof walls 7W and 7W.

The sanitary napkin 1 is in contact with the non-skin side of the topsheet 7a, and thus overlaps the absorbent body 11 in the thickness direction T, and a liquid diffusion sheet (first sheet member; auxiliary sheet) 41 . That is, the liquid diffusion sheet 41 is disposed between the topsheet 7a, the absorber 11 and the thermosensitive agent holding sheet 13 . Fig. 4 is a plan view showing a configuration example of the liquid-permeable sheet 7 according to the present embodiment, and Fig. 5 is a cross-sectional view taken along the line VV in Fig. 4 . The topsheet 7a and the liquid diffusion sheet 41 of the liquid-permeable sheet 7 are formed by pressing from the skin-side surface of the topsheet 7a toward the liquid diffusion sheet 41 to form a plurality of sheet crimping portions 67 . ) (sheet member recess). The plurality of sheet pressing portions 67 integrate the topsheet 7a and the liquid diffusion sheet 41 . The sheet pressing portion 67 has a depression P2 formed by pressing. The plurality of sheet pressing portions 67 are arranged to form a region 66 that is continuously or intermittently bordered (surrounded) by several sheet pressing portions 67 . In the present embodiment, the shape of the sheet crimping portion 67 in plan view is circular (diameter d ₆₇ ; example 0.5 to 2 mm), but the shape is not limited to the example and is arbitrary. In addition, the shape of one region 66 in plan view is a rhombus, and the plurality of sheet crimping portions 67 are arranged in a pattern in which a plurality of rhombuses are spread over the entire surface, but the shape and pattern are not limited to those examples. It is arbitrary. The integrated topsheet 7a and the liquid diffusion sheet 41 are generally in rough contact with each other in the thickness direction T. However, due to the movement of the wearer at the time of installation, as shown in FIG. 5 , in some of the plurality of regions 66 , there is a slight gap P3 between the topsheet 7a and the liquid diffusion sheet 41 . is formed, and the gap P3 can hold the air warmed by the effect of the warm feeling. In addition, each of the recessed portions P2 of the plurality of sheet crimping portions 67 can hold the air warmed by the effect of a warm feeling. At this time, the fiber density of the liquid-permeable sheet 7 is lower than that of the liquid diffusion sheet 41 . Further, in another embodiment, the fiber density of the liquid-permeable sheet 7 is equal to or greater than the fiber density of the liquid-diffusion sheet 41 . Further, in another embodiment, the sanitary napkin 1 does not have the liquid diffusion sheet 41 . In addition, description of the sheet|seat crimping|compression-bonding part 67 is abbreviate|omitted in FIG. 2, FIG. 10, and FIG. 11 which are sectional drawing.

In the longitudinal direction L, the absorber 11 has a central region 62 positioned approximately in the center, a front region 61 adjacent to the front of the central region 62, and a rear portion of the central region 62 . It is divided into adjacent rear regions 63 . Here, the central region 62 corresponds to the excretory orifice contact region 21 and is located in a range up to the vicinity of the front in the longitudinal direction L thereof. In addition, the basis weight of the central region 62 is higher than the basis weight of the front region 61 and the rear region 63 . Therefore, in the absorber 11, the basis weight of the area|region in front of the longitudinal direction L rather than the width direction center line CW is higher than the basis weight of the area|region behind the longitudinal direction L rather than the width direction center line CW. In other words, in the absorber 11, the basis weight of the region from the width direction center line CW to the front end edge 11E1 in the longitudinal direction L is from the width direction center line CW to the rear of the longitudinal direction L It is higher than the basis weight of the area up to the edge 11E2 of As a result, the amount of absorption in the excretory opening contact region 21 near the center slightly forward in the longitudinal direction L is increased, and the excretory opening of the wearer is slightly shifted forward in the longitudinal direction L than in the excretory opening contact region 21. Even when the sanitary napkin 1 is mounted in a state of being, it becomes possible to reliably absorb excrement from the absorbent body 11 . In another embodiment, the basis weight of the absorber 11 is high in a specific part different from the above, or is roughly constant in the whole area.

In this embodiment, in the absorber 11, the thickness (or basis weight) of the center part in the width direction W is thinner (or lower) than the thickness (or basis weight) of the both ends in the width direction W. However, as for the degree of thinness (or low) of both ends, 3% of the central part is mentioned, Preferably it is 5%. Here, the edge part of the width direction W in the absorber 11 is set as the area|region in the range of 10% of the width|variety of the absorber 11 from the edge of the width direction W in the absorber 11. As shown in FIG. The central part of the width direction W in the absorber 11 is made into the area|region of the range except the edge part of the both sides of the width direction W. 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 portion of the absorbent body and the skin.

The absorbent body 11 is provided with an absorbent core (not shown) and a core wrap (not shown) surrounding the absorbent core. 6 is a plan view showing a configuration example of the absorber 11 according to the present 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 crimping portions 60 (absorbent concave portions) formed by pressing from the skin-side surface of the core wrap 11a toward the inside of the absorbent core 11b. These plural absorber crimping portions (60) suppress mold collapse of the absorber (11). Moreover, each of the some absorbent crimping|compression-bonding part 60 forms the recessed part P1 dented toward the non-skin side by crimping|compression-bonding. The recessed portion P1 has a bottom portion 60B and a wall surface 60W. In the present embodiment, the shape of the absorber crimping portion 60 in plan view is circular (diameter d ₆₀ ; example 0.5 to 2 mm), but the shape is not limited to the example and is arbitrary. In addition, although the some absorber crimping|compression-bonding part 60 is arrange|positioned in a some zigzag pattern, the pattern is not limited to the example, It is arbitrary. Each of the plurality of absorbent crimping portions 60 forms a small space between the recessed portion P1 and the liquid diffusion sheet 41, so that air warmed by the effect of warmth can be maintained. However, in the absorbent body 11 , the density of the number of batches of the absorbent body pressing parts 60 in the central region 62 , that is, in the region including the excretory orifice contact region 21 , is the front region 61 and the rear region 63 . ) is higher than the density of the number of batches of the absorber crimping portion 60 in the. From the viewpoint of making the relatively high basis weight of the central region 62 more difficult to disintegrate, and the central region 62 including the excretory contact region 21 retains more of the warmed air due to the effect of warmth, thereby creating a sensitive excretory pit. It depends on the viewpoint of making it easier to warm. In another embodiment, the absorbent body 11 does not use a corewrap. In another embodiment, the absorbent body 11 does not have an absorbent body pressing portion. In addition, description of the absorber crimping|compression-bonding part 60 is abbreviate|omitted in FIG. 2, FIG. 10, and FIG. 11 which are sectional drawing.

In this embodiment, the some sheet|seat crimping|compression-bonding part 67 is arrange|positioned in the pattern which spread the some rhombic shape all over. On the other hand, the plurality of absorbent crimping portions 60 are arranged in a plurality of zigzag patterns. Therefore, it can be said that each sheet|seat crimping|compression-bonding part 67 and each absorber crimping|compression-bonding part 60 are arrange|positioned at different positions basically (most of them) in a planar view. However, a part of the plurality of sheet crimping parts 67 and a part of the plurality of absorbent crimping parts 60 may be disposed at the same position in plan view.

The warming agent holding sheet 13 (functional layer) is composed of a sheet of one or multiple layers, such as a nonwoven fabric, capable of holding a liquid (excrement), 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 portion 27 of the sanitary napkin 1 to suppress leakage of the warming agent 50 , for example, the warming agent 50 . A reduced shape similar to the shape of The warming agent 50 contains a warming component that stimulates a skin temperature receptor (thermal sensory receptor) without heating the body of the wearer of the sanitary napkin 1 or its vicinity, and causes the wearer to perceive a feeling of warmth, It further contains a solvent component capable of dissolving or dispersing the warming component. The warming agent 50 is in the form of a gas or liquid, and contains a fluid component or a volatile component that can move from a location where it is placed under the influence of temperature, atmospheric pressure, external force, etc., for example, at least one of a warming component and a solvent component. It contains a fluid component or a volatile component. Further, even if the warming agent holding sheet 13 is disposed on the non-skin side of the liquid-permeable sheet 7 , the warming agent 50 of the warming agent holding sheet 13 is released, for example, when the sanitary napkin 1 is worn. Alternatively, the liquid-permeable sheet 7 may be penetrated by volatilization or the like and contacted with the skin of the wearer's lower abdomen. Thereby, the warming component of the warming agent 50 stimulates the thermal sensory receptors of the skin to impart a feeling of warmth to the lower abdomen of the wearer.

In the present embodiment, the thermosensitive agent 50 extends in the longitudinal direction L in the width direction W of the topsheet 7a in the thermosensitive agent holding sheet 13 and extends in the width direction W A plurality of stripes (continuous or intermittent) are arranged in a row. In this case, the length of the thermosensitive agent holding sheet 13 in the width direction (W) is equal to or less than the length of the absorber 11 in the width direction (W), and the thermosensitive agent 50 is disposed in the width direction (W) of the warming body 5 . ), it becomes difficult to leak to the outside of both sides. In another embodiment, the thermosensitive agent 50 is disposed in the inner central portion 25 excluding the peripheral portion of the thermosensitive agent holding sheet 13 in plan view. In this case, the length in the width direction (W) of the thermosensitive agent holding sheet 13 is longer than the length in the width direction (W) of the absorber 11 . Thereby, the effect of the warming agent 50 extends to a wider area in the width direction W than the absorber 11 . In another embodiment, the thermosensitive agent 50 is disposed in the entirety including the peripheral portion of the thermosensitive agent holding sheet 13 in plan view. In another embodiment, the thermosensitizer 50 does not include a solvent component. In another embodiment, the warm-sensitive body 5 has a support sheet for supporting the warming-sensitive agent retention sheet 13 on the non-skin side of the warming agent retention sheet 13 . In another embodiment, the warming agent holding sheet 13 does not contain the warming agent 50 in the warming agent holding sheet 13, and thus the warming agent holding sheet 13 is a heat insulating sheet to keep the lower abdomen warm.

In this embodiment, the absorber 11 further has a function as a functional layer, ie, contains the thermosensitive agent 52 (functional agent). 8 is a schematic diagram showing the arrangement of the warming agent 52 in the absorber 11 according to the embodiment. The warming agent 52 is arranged in a plurality of stripe-shaped (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 thermosensitive agent 52 is disposed is roughly within the range in the width direction W of the topsheet 7a. Although the location of the warming agent 52 is different from that of the warming agent 50 , the properties thereof are the same. In another embodiment, the warming agent 52 is disposed in another location of the absorbent body 11, for example, on the surface or inside of the non-skin side. In another embodiment, the absorbent body 11 does not include the thermosensitive agent 52 .

In the present embodiment, the liquid-permeable sheet 7 (first sheet member) further has a function as a functional layer, that is, it contains a thermosensitive agent 51 (functional agent). 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 stripe-shaped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W on the surface of the liquid-permeable sheet 7 on the non-skin side. . In this case, the range in the width direction W in which the thermosensitive agent 51 is disposed is roughly within the range in the width direction W of the absorber 11 . Although the location of the warming agent 51 is different from that of the warming agent 50 , the properties thereof are the same. In another embodiment, the thermosensitive agent 51 is disposed on another location of the liquid-permeable sheet 7 , for example, on the surface of the skin side. In another embodiment, not the liquid-permeable sheet 7 or in addition to the liquid-permeable sheet 7 , the warming agent 51 is disposed on the non-skin or skin-side surface of the liquid diffusion sheet 41 . In another embodiment, the liquid-permeable sheet 7 does not contain the thermosensitive agent 51 .

Therefore, in the present embodiment, the above-described embodiment in which the absorbent body 11 contains the warming agent 52, the liquid-permeable sheet 7 serving as the first sheet member includes the warming agent 51, and the first sheet. At least one of the embodiments in which the liquid diffusion sheet 41 as a member contains the thermosensitive agent 51 was implemented. The liquid-permeable sheet 7 and the liquid-diffusion sheet 41, which are the first sheet members, are 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 crimping portions 67 as a plurality of sheet member concave portions. In addition, the absorbent body 11 has a plurality of dents from the skin-side surface toward the non-skin-side surface at positions different from the plurality of sheet pressing portions 67 in a region overlapping the warming agent 52 in plan view. and an absorber crimping portion 60 as an absorber concave portion.

In another preferred aspect of the present embodiment, the sanitary napkin 1 contains a warming agent in the warming body 5 . That is, when the sanitary napkin 1 includes the warming agent 50 in the warming agent retaining sheet 13 and the warming agent 51 is included in the liquid-permeable sheet 7 in the warming body 5, and at least one of the cases in which the liquid diffusion sheet 41 in the warming body 5 contains the warming agent 51 .

Here, even if the body temperature is increased by the warming agent, if excrement (eg, urine, menstrual blood) is present, the excrement becomes cold due to the outside temperature or heat of vaporization, and there is a fear that the cooled excrement adheres to the skin and the skin becomes cold. Accordingly, in this sanitary napkin 1, the region where excrement is excreted (approximately the central portion in the longitudinal direction L and the width direction of the absorbent body 11) and the region where the warming agent is disposed (the warming body 5) are separated. They are spaced apart from each other at least in the longitudinal direction L. That is, the warming agent exists in a place where it is difficult to contact the excrement. Therefore, even if the cold excrement adheres to the skin and the skin becomes cold, the warming agent separated from the excrement can continue to provide a feeling of warmth, thereby suppressing the skin from becoming cold.

In the sanitary napkin 1, the liquid-impermeable sheet 9 (second sheet member) overlaps the absorbent body 11 in the thickness direction T, and has no air permeability (non-breathable). Accordingly, the sanitary napkin 1 has a configuration in which it is difficult to push air present in the skin-side region of the liquid-impermeable sheet 9 to the non-skin side of the liquid-impermeable sheet 9, that is, to the outside of the sanitary napkin 1, have. In other words, the sanitary napkin 1 is configured to hardly push the air warmed by the warm effect, that is, to the outside of the sanitary napkin 1 .

Since the warming agent holding sheet 13 is made of a sheet (eg, nonwoven fabric) capable of holding a liquid, it can absorb excrement, although not as much as the absorbent body 11 . Therefore, it can be seen that the thermosensitive agent holding sheet 13 is a low absorption part having a lower absorption performance than the absorbent body 11 . Although the low absorption part belongs to the warm feeling body 5, it can assist the absorption of excrement in the front in the longitudinal direction L. Here, from the relationship between the thermosensitive agent holding sheet 13 and the absorbent body 11, the absorbent body 11 and the low absorbent portion (the thermosensitive agent holding sheet 13) are in the longitudinal direction (L) when viewed in the width direction (W). can be said to be continuous. Similarly, a part of the absorbent body 11 and a part of the low absorption part overlap in the thickness direction T in the overlapping part 15, and a part of the absorbent body sits on a part of the low absorption part on the skin side and overlaps. . Further, as another embodiment, the warming agent holding sheet 13 has a support sheet (eg, nonwoven fabric) on the non-skin side of the warming agent holding sheet 13 , for example, having the same shape as the warming agent holding sheet 13 in a plan view. In this case, the support sheet (with or without the thermosensitive agent retention sheet 13) can be viewed as a low-absorption portion having a lower absorption performance than the absorbent body 11 .

The sanitary napkin 1 is provided with adhesive portions for fixing the sanitary napkin 1 to the wearer's clothing on both the absorbent body 3 and the warm body 5 . One side of the adhesive portion is fixed to the liquid-impermeable sheet (9), and the other side is temporarily fixed to the individual packaging sheet (43) of the sanitary napkin (1). Among them, the absorbent body 3 has adhesive portions 73 arranged in a region overlapping the absorber 11 in plan view, for example, extending along the longitudinal direction L and intermittently arranged in the width direction W; , an adhesive portion 71 extending along the longitudinal direction L is disposed in the substantially central portion of the wing portion 17 in the width direction W. On the other hand, in the warm-sensing body 5 , adhesive portions 72 are disposed in regions of both ends in the width direction W. As shown in FIG. In another embodiment, the other side of the adhesive portion is temporarily fixed to the release sheet fixed to the individual packaging sheet 43 .

As shown in Fig. 1, the individual packaging body (sanitary napkin 1 + individual packaging sheet 43) has a first longitudinal fold F1 (eg, a left fold) and a second longitudinal fold F2 ( Example: a right folding line), a first folding line F3 in a width direction (eg, a front folding line), and a second folding line F4 in a width direction (eg a rear folding line). However, the first longitudinal fold F1 and the second longitudinal fold F2 (a pair of longitudinal folds) extend along the longitudinal direction L and are predetermined from one side in the width direction W to the other. They are arranged parallel to each other at intervals. The first width direction break line F3 and the width direction second break line F4 extend along the width direction W, and are arranged in parallel with each other at a predetermined interval from one side to the other side in the longitudinal direction L. That is, there are two folds in the longitudinal direction and two folds in the width direction. However, the first cut line F3 in the width direction is disposed at the front of the sanitary napkin 1 , and the second cut line F4 in the width direction is disposed at the rear of the sanitary napkin 1 . The width direction first cut line F3 is located at the front end of the absorbent body 3 and at the rear end of the warm-sensing body 5 . Specifically, the width direction first cut line F3 is located on the width direction center line CW side rather than the front end edge 11E1 in the longitudinal direction L in the absorber 11 . However, the first cut line F3 in the width direction and the second cut line F4 in the width direction are located in front and behind the excretory opening contact area 21 in the longitudinal direction L in order to avoid the excretory opening contact area 21 . . Moreover, in another embodiment, there is no longitudinal direction cut line. In another embodiment, the number of widthwise folds is 1 or 3 or more.

In addition, in the sanitary napkin 1, when individually wrapped, the first longitudinal fold F1 and the second longitudinal fold F2 together with the individually wrapped sheet 43 are used as the axis, and the width direction ( The outer portions (a pair of outer portions) of W) are each folded toward the skin-side surface. Next, in the sanitary napkin 1 folded together with the individual packaging sheet 43 , the first width direction fold line F3 and the width direction second fold line F4 are the base axes, and the outer side in the longitudinal direction L rather than the two fold lines The portions are each folded toward the surface of the skin side. Then, one end of the individual packaging sheet 43 is fixed to the individual packaging sheet 43 opposite to it with the fixing tape 45 . Thereby, the individual packaged body of the sanitary napkin 1 is formed. And, when the sanitary napkin 1 is used, that is, when the individual packaging is opened, the sanitary napkin 1 is opened in the reverse order from when it is individually packaged.

In addition, the sanitary napkin 1 has a plurality of pressing portions 31 and 33 . The plurality of pressing portions 31 are arranged in a curved, continuous or intermittent manner so as to surround the excretory orifice contact region 21, mainly in the absorbent body 3 . The plurality of crimping portions 33 are dispersedly arranged in a dot shape in a region surrounded by the plurality of crimping portions 31 in the absorbent body 3 . The pressing portions 31 and 33 are formed by pressing the liquid-permeable sheet 7 and the absorbent body 11 (in the overlapping portion 15, additionally a warming agent retaining sheet 13) from the skin side toward the non-skin side. . In addition, the shape and arrangement|positioning of the some crimping|compression-bonding part 31 and 33 are arbitrary. In another embodiment, in the warming body 5, the liquid permeable sheet 7 and the warming agent holding sheet 13 (the absorbent body 11 in the overlapping portion 15 additionally) are compressed from the skin side to the non-skin side. It further includes one or a plurality of compression portions to be formed. The shape of the crimping portion is arbitrary.

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

In the sanitary napkin 1, when worn by a wearer, 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 an effect of a feeling of warmth in which 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), the air warmed by the effect of the warming agent 51 . At least a portion of the plurality of sheet compression portion 67 may be maintained in the recessed portion (P2). In addition, since the absorbent body 11 includes a plurality of absorber pressing portions 60 (absorbent concave portions), at least a part of the air warmed by the effect of the warming agent 52 is absorbed by the plurality of absorbent pressing portions 60 . It can be maintained in the recessed part (P1). Here, since the positions of the sheet crimping part 67 and the absorber crimping part 60 are different from each other, if the plurality of sheet crimping parts 67 and the plurality of absorbent crimping parts 60 are matched, a lot of warm air can be maintained. have. Then, the air held by the liquid-impermeable sheet 9 (second sheet member) that is located on the non-skin side of the absorber 11 and the liquid-permeable sheet 7 (and the liquid-diffusion sheet 41) and is non-breathable. It can be roughly confined to the skin side so that it does not leak outward. Due to these synergistic effects, in addition to obtaining a warming effect by the warming agent 51 and/or the warming agent 52, the temperature of the absorbent body 11 is lowered when the warming agent is difficult to reach the skin due to excretion. Even when the skin is heated, the skin can be kept warm with the warm air, and a feeling of warmth can be obtained. Thereby, it becomes possible to improve the durability of a feeling of warmth.

Next, a preferred method of using the sanitary napkin 1 according to the present embodiment will be described.

When the wearer puts on the sanitary napkin 1, first, the sanitary napkin 1 is fixed to the clothing (eg, shorts) so that the excretory opening contact area 21 of the absorbent body 11 of the absorbent body 3 corresponds to the wearer's excretory opening. do. Thereby, the sanitary napkin 1 is fixed to the garment 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 warm body 5 in contact with the skin of the wearer's lower abdomen.

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

In the present embodiment, the warming agent 50 (functional agent) of the warming agent holding sheet 13 contains a warming component that activates the TRP channel 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 penetrates the liquid permeable sheet 7 and comes into contact with the wearer's skin, and the wearer's skin In the present invention, the TRP channel of the warming agent contact portion in contact with the warming component can be efficiently activated to efficiently impart a feeling of warmth to the lower abdomen of the wearer.

By imparting a feeling of warmth to the wearer's lower abdomen, the TRP channel of the warming agent contact portion that was in contact with the warming component in the skin of the wearer's lower abdomen is activated. It can be expected that the temperature of the contact portion of the warm component on the skin is raised. As a result, it is expected that the wearer's menstrual pain will be alleviated by warming the site close to the uterus of the wearer and releasing the painful substance prostaglandin. It is expected that the wearer's premenstrual syndrome, poor circulation, menopausal disorders, etc. will be alleviated by warming the part close to the uterus of the wearer. By promoting blood circulation (promoting lymph flow), it is expected to discharge waste products, improve poor circulation, improve fat burning, and improve immunity.

In a preferred aspect of the present embodiment, in the absorbent body 11 , the density of the number of batches of the absorber crimping portion 60 (absorbent concave portion) in the excretory opening contact region 21 is determined by determining the density of the absorbent body crimping portion in the excretory outlet non-contact region 23 . It was made higher than the density of the batch number of (60) (absorber recessed part). Therefore, when the sanitary napkin 1 is attached to the wearer, it is possible to retain more of the air warmed in the excretory opening contact area 21 . Therefore, it is possible to keep the skin in the vicinity of the excretory port, which is sensitive and susceptible to temperature changes, more warm and continuously kept. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferable aspect of this embodiment, in the width direction W, the thickness of the center part in the absorber 11 was made thinner than the thickness of the both ends located on both sides of the center part. For this reason, the sanitary napkin 1 is attached to the wearer, and both ends of the absorbent body 11 in the width direction W pass through the liquid-permeable sheet 7 and the liquid diffusion sheet 41 (first sheet member). ) When contacted with skin, it can make it easy to produce a slight clearance gap between the center part of the absorbent body 11 and skin. And, it is possible to further maintain the warm air in the gap. Therefore, the skin in the vicinity of the excretory opening which the central part of the absorbent body 11 can contact and which is sensitive and easy to feel a temperature change can be warmly and continuously kept. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, the sheet member concave portion includes a sheet crimping portion 67 for integrating the topsheet 7a and the liquid diffusion sheet 41 that are in contact with each other. In other words, the topsheet 7a and the liquid diffusion sheet 41 are coupled to each other by the plurality of sheet crimping portions 67, but the portions other than the sheet crimping portions 67 are not coupled. Therefore, when the sanitary napkin 1 is attached to the wearer, the top sheet 7a and the liquid diffusion sheet 41 are mutually connected in the thickness direction T between the adjacent sheet pressing portions 67 (not the nearest). By spaced apart, it can be made easy to generate|occur|produce a slight gap|interval P3. And, it is possible to further maintain the air warmed in the gap P3. Therefore, the skin can be insulated with warm air not only in the plurality of sheet crimping portions 67 but also in the gaps P3 therebetween. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, the fiber density of the topsheet 7a formed of the nonwoven fabric is lower than the fiber density of the liquid diffusion sheet 41 formed of the nonwoven fabric in contact with the non-skin side thereof. Therefore, while stably suppressing backflow of excrement of the absorbent body 11 from the liquid diffusion sheet 41 with a high fiber density to the topsheet 7a, voids between the fibers of the topsheet 7a with a low fiber density. Well, I can keep the warm air more by the effect of a feeling of warmth. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, a pair of leak prevention walls 7W and 7W are provided on both sides of the topsheet 7a in the width direction W. As shown in FIG. Therefore, when the sanitary napkin 1 is attached to the wearer, the pair of leak barriers 7W, 7W is slightly raised toward the skin side, and the pair of leak barriers 7W, 7W and the topsheet 7a ), it is possible to easily create a small space on the skin side of the topsheet 7a. And, it is possible to keep more warm air in that space. Thereby, in addition to the some sheet|seat crimping|compression-bonding part 67 and the some absorber crimping|compression-bonding part 60, even in the space, the skin can be heat-retained with the warm air. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, the warming agent holding sheet containing the warming agent 50 is positioned in the front (the wearer's abdomen side) in the longitudinal direction L of the warming body 5 , that is, the absorbent body 11 . (13) (front temperature sensing part) is further provided. Therefore, when the sanitary napkin 1 is attached to the wearer, the abdominal portion of the wearer can be warmed with the warming agent 50 . In addition, since the pair of leak barriers 7W and 7W extend to the warming agent holding sheet 13, the wearer's ventral part is also formed by the pair of leak barrier walls 7W and 7W and the top sheet 7a. You can make it easier to create a little space. And, it is possible to maintain the warm air in the space. Thereby, in addition to the plurality of sheet crimping portions 67 and the plurality of absorbent crimping portions 60, the skin can be insulated with the air warmed from the abdominal portion of the wearer even in that space. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In another embodiment, the leak prevention wall 7W has a structure in which two or more layers of sheets are laminated. 10 is a cross-sectional view taken along the center line CW in the width direction of the sanitary napkin 1 according to another embodiment. In this case, the leak prevention wall 7W is formed in each of the both ends in the width direction W of the topsheet 7a. Specifically, in the pair of leak prevention walls 7W and 7W, both ends in the width direction W of the topsheet 7a are inside and on the non-skin side (thickness) in the width direction W of the topsheet 7a. By folding it back in the direction T), it is formed into a loop shape when viewed in the longitudinal direction L. In the leak containment wall 7W, the upper part in the thickness direction T, that is, the upper part of the loop, is the upper layer 7W1 of the leak containment wall 7W, and the lower part, i.e., the lower part of the loop, is the leak barrier wall ( 7W) as the lower layer 7W2. In this case, it can be said that the leak prevention wall 7W has a structure in which two layers of the upper layer 7W1 and the lower layer 7W2 are laminated. When such a sanitary napkin 1 is mounted on the wearer's clothing, the hollow portion of the pair of leak prevention walls 7W and 7W, that is, the loop-shaped portion composed of the upper layer 7W1 and the lower layer 7W2, is formed by an absorbent body ( 11) is pushed outward. As a result, when the sanitary napkin 1 is sandwiched in the width direction W between both legs of the wearer, and the absorbent body 11 is deformed along the shape of the wearer's crotch portion, this loop-shaped portion is deformed of the absorbent body 11 . It can be easily transformed according to the Therefore, such a loop-shaped part (a pair of leak prevention walls 7W, 7W) can make a wearer perceive cushioning property, and can maintain adhesiveness with the wearer's crotch part. Thereby, a good fitting feeling can be provided to the leak prevention wall 7W, and it is possible to suppress sideways leakage of excrement. Further, according to this configuration, when the sanitary napkin 1 is attached to the wearer, the space created by the pair of leak-proof walls 7W and 7W and the topsheet 7a or the space P4 created in the loop-shaped part It can make it difficult to release the retained air more outward. Therefore, in addition to the some sheet crimping|compression-bonding part 67 and the some absorber crimping|compression-bonding part 60, also these spaces can hold|maintain the warmed air further. Thereby, the skin can be kept warm with warm air more. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In another embodiment, the leak prevention wall 7W has a structure in which two or more layers of sheets are laminated. 11 is a cross-sectional view taken along the center line in the width direction of the sanitary napkin according to still another embodiment. In this case, the leak prevention wall 7W is formed at the inner edge part in the width direction W of each of a pair of side sheets. Specifically, each of the pair of leak prevention walls 7W and 7W is, in the width direction W, a lower layer 7W2 having an outer end edge as a fixed end, and a lower layer 7W2 having an inner end edge as a fixed end. An upper layer 7W1 connected to the inner end edge and having the outer end edge as a free end is provided. Moreover, since the inner edge of the lower layer 7W2 is not fixed substantially, it can be said that it is a free edge. That is, the height in the thickness direction T of the leak prevention wall 7W can be made higher, and the space formed by the pair of leak prevention walls 7W and 7W and the topsheet 7a can be made wider. According to this configuration, when the sanitary napkin 1 is attached to the wearer, the air held in the space created by the pair of leak-proof walls 7W, 7W and the topsheet 7a or the upper layer 7W1 and the lower layer 7W2 ) can make it more difficult to release the air remaining between them to the outside, and can hold more. Therefore, in addition to the plurality of sheet crimping portions 67 and the plurality of absorbent crimping portions 60, the heated air can be further maintained even in these spaces. Thereby, the skin can be kept warm with warm air more. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, the liquid-impermeable sheet 9 is larger than the basis weight of the first adhesive (not shown) for bonding the liquid-permeable sheet 7 (including the liquid-diffusion sheet 41) and the absorber 11 to each other. ) and the second adhesive (not shown) for adhering the absorber 11 have a large basis weight. Here, although the liquid-impermeable sheet 9 is non-breathable, it may have some air permeability. Therefore, by making the basis weight of the second adhesive relatively large, it is possible to cover the air permeability gap on the skin-side surface of the liquid-impermeable sheet 9. can be higher Therefore, the air warmed by the effect of a feeling of warmth can be more stably maintained on the skin side than the liquid-impermeable sheet 9 . Thereby, it becomes possible to further improve the persistence of a warm feeling.

In a preferred aspect of the present embodiment, when the sanitary napkin 1 is folded and individually wrapped, in the width direction W, the sanitary napkin 1 is positioned outside the pair of first longitudinal folds F1 and second longitudinal folds F2. The part is comprised so that it may be folded toward the surface of the skin side with two fold lines as a base axis. Accordingly, in the sanitary napkin 1, folds are formed at the positions of the pair of first and second longitudinal folds F1 and F2, and the portion outside the two folds (a pair of outer parts) is on the skin side. Easier to stand up towards Therefore, when the sanitary napkin 1 is mounted, in the width direction W, the pair of outer parts press the skin surface while trying to stand up, so that the inner central part rather than the pair of outer parts is slightly separated from the skin surface. it gets easier That is, it becomes easy to produce a space|gap between a skin surface and a center part. For this reason, the air warmed by the effect of a feeling of warmth can further be hold|maintained in the space|gap. Thereby, it becomes possible to further improve the persistence of a warm feeling.

In the sanitary napkin 1 of this embodiment, as a preferable aspect, in the longitudinal direction L, the distance between the center line CW in the width direction and the front edge 11E1 of the absorbent body 11 is the front edge of the absorbent body 11 . It is configured to be longer than the distance between the edge 11E1 and the front edge of the sanitary napkin 1 . In other words, in the area in front of the longitudinal direction L from the width direction center line CW of the sanitary napkin 1, the length in the longitudinal direction L of the region where the absorbent body 11 exists is equal to the length of the absorbent body 11 It is longer than the length in the longitudinal direction L of the non-existent region. Therefore, in the area in front of the sanitary napkin 1 in the longitudinal direction L, the area of the absorbent body 11 capable of absorbing liquid excrement can be sufficiently secured in the longitudinal direction L. Therefore, in the longitudinal direction L, when the sanitary napkin 1 having the warm body 5 at the front and having a relatively long front part is attached to the underwear, there is a concern that the front end will come out, so that the wearer Even if the sanitary napkin 1 is moved to the rear more than necessary and mounted, the area of the absorbent body 11 can be sufficiently secured in the area in front of the sanitary napkin 1, so that leakage of excrement from the front can be suppressed. From the viewpoint of suppressing the leakage of excrement from the front, the lower limit of the length of the front region 3a of the absorbent body 3 is preferably 110% to 130% of the length of the warm-sensing body 5, and the warm-sensing body 5 ), it is preferable that the upper limit be 300% to 200% or less of the length of the warm-sensing body 5 from the viewpoint of sufficiently obtaining the warming effect.

(Each material in the sanitary napkin (1), etc.)

Next, each material of the sanitary napkin 1 in each embodiment, etc. are demonstrated.

The warming agent holding sheet 13, the liquid-permeable sheet 7, and the absorber 11 as the functional layer in each of the above embodiments are a warming component and a solvent that activate a TRP channel (temperature receptor (thermal sensory receptor)). It has a warming agent 50, a warming agent 51, and a warming agent 52 containing components.

The thermosensitizers 50 , 51 , and 52 include, for example, a thermosensitive component that activates TRP channels and a solvent component. The warmth component is not particularly limited as long as it activates the TRP channel, and examples thereof include an agonist for the TRPV1 receptor and an agonist for the TRPV3 receptor, and an agonist for TRPV1 is preferable. This is because the TRPV1 receptor has a high activation temperature threshold of more than 43° C., so that a high sense of warmth can be imparted to the wearer.

The warmth component is preferably a plant-derived compound from the viewpoint of the wearer's safety. As the warming component, for example, capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinate, nicotinic acid β -Butoxyethyl, N-acylvanylamide, nonanoate vanillylamide, polyhydric alcohol, red pepper powder, red pepper tincture, red pepper extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivatives (eg, vanillyl ethyl ether, Vanillyl butyl ether, vanillyl pentyl ether, vanillyl hexyl ether), isovanilyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratrial alcohol derivatives, substituted benzyl alcohol derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethylvanillinpropyleneglycolacetal, ginger extract, ginger oil, gingerol, gingerlon, hesperidin and pyrrolidonecarboxylic acid, and any combination thereof. Among these, the warming component is preferably not capsaicin from the viewpoint of hardly causing pain to the wearer, and a vanillyl alcohol alkyl ether derivative (eg, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl hexyl). ether), ginger extract, ginger oil, gingerol and gingerron, and any combination thereof.

The solvent component is not particularly limited as long as it can contain a warming component, and examples thereof include a lipophilic solvent and a hydrophilic solvent. Such a solvent component can dissolve, disperse, and the like a warming component. Examples of the lipophilic solvent include oils and fats. Examples of oils and fats include natural oils (eg, fatty acid esters such as triglyceride, palm oil, linseed oil, etc.), hydrocarbons (eg, paraffin (eg, liquid paraffin)). Hydrophilic solvents include, for example, water and alcohols. Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol and glycerin, and higher alcohols such as caprylic alcohol, lauryl alcohol and myristyl alcohol. Among these, as a solvent component, oil and fat (lipophilic solvent) or alcohol (hydrophilic solvent) are preferable from a viewpoint of being easy to control volatility, especially from a viewpoint of being easy to lower|hang volatility. Further, from the viewpoint of hardly impairing water absorption, the solvent component is preferably a lipophilic solvent.

In addition, the warming agent 51 of the liquid-permeable sheet 7 and the warming agent 52 on the surface of the absorbent body 11, depending on the liquid excretion, are placed in the lower layer (eg, the absorber 11, the lower part of the absorber 11). ), it is preferable to coexist with a durable hydrophilic emulsion (durable hydrophilicizing agent) having a characteristic that it is difficult to flow out. That is, it is preferable to include a durable hydrophilic oil agent as a solvent component. The durable hydrophilic emulsion is not particularly limited, and those coated or kneaded onto fibers in the technical field may be employed. Examples of the durable hydrophilizing agent include a mixture of an alkyl phosphate ester salt having 10 to 30 carbon atoms and a betaine compound having 10 to 30 carbon atoms, a sulfate ester salt or a sulfonate salt, an alkyl phosphate ester salt and a polyether-modified silicone. mixtures and the like. Therefore, it is possible to suppress the transfer of the warming agents 51 and 52 to the lower layer by excretion. That is, it is possible to maintain the warming material in a portion relatively close to the skin. Thereby, it becomes possible to further improve the persistence of a warm feeling. Further, in another embodiment, at least one of the constituent fibers of the liquid-permeable sheet 7 on which the warming agent 51 is disposed and the constituent fibers of the absorbent 11 on which the warming agent 52 is disposed is made of a durable hydrophilic oil. By pretreatment, the constituent fibers themselves are imparted with the properties of a durable hydrophilic emulsion.

The concentration of the warming component of the warming agent 50 is preferably 1 to 50 mass%, more preferably 3 to 30 mass%, and still more preferably 5 to 15 mass%. It is in terms 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/m2, more preferably 0.01 to 20 g/m2, still more preferably 0.1 to 10 g/m2. It is from the viewpoint of giving warmth to the wearer.

In the sanitary napkin 1, the warming agent may contain, in addition to the above-described warming component and solvent component, at least one other component having a desired action within a range that does not impair the effect of imparting a feeling of warmth to the wearer. Examples of such at least one other component include drugs such as antibacterial agents, skin astringents and anti-inflammatory agents, vitamins, amino acids, zeolite, hyaluronic acid, collagen, petrolatum, trehalose, pH adjuster, moisturizer, fragrance, and the like.

Unlike a heat-generating agent that generates heat by itself, the warming agent of the sanitary napkin 1 is difficult to cause low-temperature burns, and the adhesive part 72 is difficult to soften. When the adhesive portion 72 and the like are difficult to remain on underwear, etc., it is preferable.

However, the warming agent 50 , the warming agent 51 , and the warming agent 52 may contain a heating agent. In this case, examples of the warming agent 50 , the warming agent 51 , and the warming agent 52 include particulate, paste, or sheet-like heating agents containing a heating component and a solvent component.

The warming agent 50, the warming agent 51, and the warming agent 52 are protected by a water-disintegrating protective material, such as a microcapsule, to prevent volatilization or movement to another area until the sanitary napkin 1 is used. it may be good The microcapsule contains a functional agent, and when it comes into contact with a liquid (eg, menstrual blood, urine, sweat), it collapses and releases the functional agent to the outside. The released functional agent exhibits a predetermined function to the wearer by vaporizing by the wearer's body temperature or the like, or by coming into contact with the wearer's skin.

As the material of the microcapsule, for example, saccharides such as monosaccharides (eg glucose), disaccharides (eg sucrose) and polysaccharides (eg dextrin, glucomannan, sodium alginate, water-soluble starch), gelatin, water-soluble polymers (eg poly vinyl alcohol, polyvinyl acetate) and the like.

Microcapsules are commercially available, and examples thereof include INCAP (trademark) available from Symrise. In addition, microcapsules can be produced, for example, by dissolving the material of the microcapsules in water to form an aqueous solution, mixing a functional agent and a surfactant in the aqueous solution, and drying the aqueous solution under reduced pressure while spraying the aqueous solution.

In the sanitary napkin 1, the material of the liquid-permeable sheet 7 is not particularly limited as long as it has liquid-permeability, and examples thereof include fabrics (eg, non-woven fabrics, woven fabrics, knitted fabrics) and perforated films. As the fabric, a nonwoven fabric is preferable from the viewpoint of ease of manufacturing the sanitary napkin 1 . Examples of the non-woven fabric include air-laid pulp, air-through non-woven fabric, spun-bonded non-woven fabric, point-bonded non-woven fabric, spun lace non-woven fabric, needle punch non-woven fabric, melt blown non-woven fabric, and combinations thereof (eg, SMS). Especially, as a nonwoven fabric, an air-through nonwoven fabric is preferable. The liquid-permeable sheet 7 preferably has a basis weight of 5 to 100 g/m 2 , more preferably 10 to 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 the fibers constituting the fabric include natural fibers, synthetic fibers and semi-synthetic fibers. Examples of natural fibers include pulp fibers and regenerated cellulose fibers. Examples of the regenerated cellulose fibers include rayon fibers. Semisynthetic fibers include, for example, semisynthetic cellulose fibers such as acetate fibers. As a synthetic fiber, a thermoplastic fiber is mentioned, for example. As the thermoplastic fiber, for example, a polyolefin-based polymer such as polyethylene or polypropylene, a polyester-based polymer such as polyethylene terephthalate (PET), polybutylene terephthalate or polypentylene terephthalate, nylon 6 or nylon 6,6 and and fibers formed from the same polyamide-based polymer, acrylic polymer, polyacrylonitrile-based polymer, or modified products thereof, or a combination thereof. Examples of the perforated film include those in which a plurality of perforated portions are formed in a sheet of polyethylene or polypropylene.

Moreover, it is preferable that the liquid-permeable sheet|seat 7 (1st sheet member) is an air-through nonwoven fabric. The air-through nonwoven fabric has a net face facing the transport net at the time of manufacture, and a vignette face opposite to the net face. In this case, the net surface of the air-through nonwoven fabric is disposed toward the skin side, and the vignette surface is disposed toward the non-skin side. In the air-through nonwoven fabric, the voids between the constituent fibers of the vignette surface are large. Therefore, in the sanitary napkin 1, by arranging the warming agent 51 (warming part) on the vignette surface disposed on the non-skin side, it is possible to easily hold the warming agent 51 in the voids between the constituent fibers, Thereby, the warming agent 51 can be continuously discharged, and the durability of the feeling of warmth can be further improved. In addition, after the warming agent 51 is consumed or discharged by excretion, the warmed air can be further retained in the voids. Thereby, it becomes possible to further improve the persistence of a warm feeling. In addition, the voids between the constituent fibers of the net surface are small, and the skin can be in contact with the skin smoothly, so that the wearing feeling perceived by the wearer can be improved.

In addition, it is preferable that the topsheet 7a is formed of hydrophilic fibers (eg, cotton, rayon, wool, silk). Thereby, it is possible to easily put and retain moisture including sweat in the constituent fibers. Thereby, it is possible to make it difficult for moisture to remain on the surface of the constituent fibers, to make it difficult to contact moisture with the skin, and to make it difficult to feel the cold on the skin. Thereby, it becomes possible to further improve the persistence of a 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 diffusivity, and examples include liquid permeable and hydrophilic nonwoven fabric and laminated nonwoven fabric thereof, Specific examples of the material for the liquid-permeable sheet 7 include those listed. Further, 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 has a fiber density of preferably 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, it is preferable that the fiber density of the liquid diffusion sheet 41 is higher than that of the liquid-permeable sheet 7 . In other words, it is preferable that the fiber density of the liquid-permeable sheet 7 is lower than that 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 has impermeability. This is from the viewpoint of making it difficult to dissipate the air warmed by the warming effect of the warming agent 50 from the area between the liquid-impermeable sheet 9 and the skin. As a material of the liquid-impermeable sheet 9, for example, a synthetic resin film such as polyethylene or polypropylene, a synthetic resin film bonded to a nonwoven fabric such as spunbond or spunlace, and a multilayer nonwoven fabric such as SMS are mentioned. A synthetic resin film having The liquid-impermeable sheet 9 preferably has a basis weight of 10 to 50 g/m 2 , more preferably 15 to 30 g/m 2 .

In the sanitary napkin 1, as a material of the warming agent holding sheet 13, for example, those listed as the material of the liquid-permeable sheet 7, or a porous resin sheet such as a sponge sheet, etc., impregnated with the warming agent 50 what is possible can be Specifically, when the solvent component of the warming agent 50 is a lipophilic solvent, a synthetic fiber fabric, for example, a nonwoven fabric, a woven fabric, a knitted fabric, etc. is mentioned, Preferably, the synthetic fiber nonwoven fabric is mentioned. When the solvent component of the warming agent is a hydrophilic solvent, for example, a fabric composed of cellulose fibers, for example, a nonwoven fabric, a woven fabric, a knitted fabric, etc., preferably a tissue composed of pulp fibers, and an air-laid pulp. have. Further, as another embodiment, when a thermal insulation body having a thermal insulation function is used instead of the thermal sensation main body 5 , the material of the thermal insulation sheet substituted for the thermal sensation agent holding sheet 13 is, for example, the thermal agent retention sheet 13 . and those listed as the material of, in this case, the warming agent 50 is not impregnated.

In the sanitary napkin 1, as a material of the absorbent body 11 (absorbent core of), a pulp fiber and a superabsorbent polymer are mentioned, for example. When the absorbent body 11 has a core wrap, the material for the core wrap is, for example, a tissue. The basis weight of the absorber 11 is, for example, 10 to 500 g/m 2 , preferably 100 to 400 g/m 2 .

Moreover, it is preferable that the absorber 11 contains a superabsorbent polymer, and the ratio of the superabsorbent polymer with respect to the absorber 11 is 5-50 mass %. In this way, by setting the ratio of the superabsorbent polymer to the absorbent body 11 within a predetermined range, when the superabsorbent polymer absorbs excrement and swells, voids can be created between adjacent swollen superabsorbent polymers. For this reason, the air warmed by the effect of a feeling of warmth can further be hold|maintained in the space|gap. Thereby, it becomes possible to further improve the persistence of a warm feeling. When the ratio is lower than 5% by mass, voids generated when swelling is reduced. When the ratio is higher than 50% by mass, a gel-blocking phenomenon occurs due to the superabsorbent polymer, and the absorption performance of the sanitary napkin 1 decreases. .

In the sanitary napkin 1, as a material for the adhesive parts 71, 72, 73, etc., a hot melt adhesive, for example, styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene-isoprene - A pressure-sensitive adhesive or a heat-sensitive adhesive mainly composed of a rubber type such as styrene (SIS) or an olefin type such as a linear low-density polyethylene; and a water-sensitive adhesive made of a water-soluble polymer (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or a water-swellable polymer (eg, polyvinyl acetate, sodium polyacrylate, etc.).

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

In the sanitary napkin 1, as a material of the individual packaging sheet 43, polyolefin polymers, such as polyethylene and polypropylene, are mentioned, for example. The individual packaging sheet 43 may include an airtight layer from the viewpoint of enhancing airtightness. As the material of the airtight layer, 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, base film (polyethylene terephthalate, etc.) on which alumina, silica, etc. are vapor-deposited.

The absorbent article (eg, sanitary napkin) of the present invention is not limited to each of the above-described embodiments, and within the scope not departing from the purpose and spirit of the present invention, combining the embodiments or applying known techniques etc are possible.

1: sanitary napkin
7: Liquid permeable sheet (first sheet member)
9: Liquid impermeable sheet (second sheet member)
11: absorber
51, 52: warming agent
60: absorber crimping portion (absorbent concave portion)
67: sheet crimping portion (seat member recessed portion)

Claims (15)

An absorbent body, a first sheet member having a longitudinal direction, a width direction, and a thickness direction, the absorber overlapping in the thickness direction, the first sheet member being located on the skin side of the absorbent body and having liquid permeability, and the absorber and the thickness direction overlapping it An absorbent article comprising a second sheet member located on a non-skin side of the absorbent body and having liquid impermeability, the absorbent article comprising:
At least one of the absorbent body and the first sheet member is provided with a thermosensitive portion containing a warming agent,
the first sheet member includes, in a planar view, a plurality of sheet member concave portions recessed from the skin-side surface toward the non-skin-side surface in a region overlapping the warmth-sensitive portion in plan view;
The absorbent body includes a plurality of absorber recesses 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 overlapping the warm-sensitive portion in plan view. do,
wherein the second sheet member is non-breathable;
absorbent article. According to claim 1,
The absorbent body has an excretory pit contact region, which is a region in contact with the wearer's excretory pit, and an excretory pit non-contact region, which is a region other than the excretory pit contact region;
The density of the number of batches of the absorbent recessed portions in the excretion opening contact region is higher than the density of the number of batches of the absorbent body recessed portions in the excretory non-contacting region. 3. The method of claim 1 or 2,
The absorbent article wherein the thickness of the central portion in the width direction in the absorber is thinner than the thickness of both ends in the width direction in the absorber. 3. The method of claim 1 or 2,
The first sheet member,
a surface sheet;
Auxiliary sheet in contact with the non-skin side of the topsheet
including,
and each of said plurality of sheet member recessed portions includes a pressing portion formed by pressing from a skin-side surface of said topsheet toward a non-skin-side surface of said auxiliary sheet so as to integrate said topsheet and said auxiliary sheet. 3. The method of claim 1 or 2,
The first sheet member,
A surface sheet formed of a non-woven fabric;
Auxiliary sheet in contact with the non-skin side of the topsheet and formed of a nonwoven fabric
including,
wherein the fiber density of the topsheet is lower than that of the auxiliary sheet. 3. The method of claim 1 or 2,
The first sheet member,
a surface sheet;
A pair of side sheets bonded to both sides of the top sheet in the width direction
including,
a leak prevention wall extending in the longitudinal direction at each of the inner ends in the width direction of each of the pair of side sheets, or at both ends of the top sheet in the width direction,
In the width direction, the leak prevention wall has an outer end edge as a fixed end, and an inner end edge as a free end,
The heat-sensing portion is located in a region overlapping the topsheet in a plan view. 7. The method of claim 6,
Further comprising a front warmth-sensing part located in front of the absorber in the longitudinal direction and containing a warming agent,
The absorbent article has one surface in contact with the top sheet and the pair of side sheets, and the other surface in contact with the second sheet member. 7. The method of claim 6,
The leak-proof wall is an absorbent article having a structure in which two or more layers of sheets are laminated. 3. The method of claim 1 or 2,
The heat-sensing part is an absorbent article comprising the warming agent and a durable hydrophilic emulsion. 3. The method of claim 1 or 2,
The first sheet member is an air-through nonwoven fabric,
The air-through nonwoven fabric is disposed with a net surface facing the transport net at the time of manufacture facing the skin side, and a vignette surface opposite to the net surface facing the non-skin side,
The absorbent article in which the warmth sensing part is disposed on the vignette surface. 3. The method of claim 1 or 2,
the first sheet member is a top sheet;
The absorbent article wherein the top sheet is formed of hydrophilic fibers. 3. The method of claim 1 or 2,
The absorbent includes a super absorbent polymer,
The absorbent article wherein the ratio of the superabsorbent polymer to the absorber is 5 to 50 mass%. 3. The method of claim 1 or 2,
The absorbent article has a larger basis weight of the second adhesive for adhering the second sheet member and the absorber than the basis weight of the first adhesive for adhering the first sheet member and the absorbent body. 3. The method of claim 1 or 2,
Further comprising a pair of longitudinal cut lines arranged on both sides with the longitudinal center line of the absorbent article therebetween, extending along the longitudinal direction, and arranged at intervals in the width direction,
When the absorbent article is folded and individually wrapped, in the width direction, a portion outside the pair of longitudinal folds in the absorbent article has the pair of longitudinal folds as the axis, and in the absorbent article, An absorbent article configured to be folded toward a skin-side surface. 3. The method of claim 1 or 2,
The absorbent article further comprising: an absorbent body including the absorbent body; and a warming body positioned in front of the absorbent body in the longitudinal direction and containing a warming agent.

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