JP7089040B2 - Absorbent article - Google Patents

Description

The present invention relates to an absorbent article comprising a functional layer.

Absorbent articles are known that include a functional layer having a predetermined function, such as allowing the wearer of the absorbent article to perceive a feeling of warmth or coldness through the skin. For example, Patent Document 1 discloses an absorbent article including a functional layer having a function of causing a wearer to perceive a feeling of warmth or a feeling of coldness through the skin. According to Patent Document 1, in this absorbent article, the functional layer is mainly arranged on the anterior side (ventral side) in the longitudinal direction with respect to the absorber. Along with this, in this absorbent article, the front portion in the longitudinal direction is longer than the shape of a general absorbent article.

Utility Model Registration No. 3213494

When the wearer attaches the absorbent article as in Patent Document 1 to the underwear, the wearer attaches the absorbent article so that the front portion of the absorbent article does not protrude outward from the front edge of the underwear (the opening of the waist). do. At that time, in order to more reliably prevent the front end of the absorbent article from sticking out, the wearer may install the absorbent article by shifting it more than necessary to the rear side (dorsal side) in the longitudinal direction. .. That is, it is conceivable that the position of the absorber suitable for absorbing liquid excrement may be shifted to the rear side more than necessary. In that case, in the region on the front side in the longitudinal direction of the absorbent article, the area of the absorber is reduced, and excrement (eg, menstrual blood, urine) is not sufficiently absorbed by the absorber, and the excrement is not sufficiently absorbed from the front side of the absorbent article. There is a risk of leakage. A method of shortening the length of the functional layer in the longitudinal direction is conceivable, but the functional layer may not function sufficiently.

Therefore, it is an object of the present invention that in an absorbent article having a functional layer on the anterior side in the longitudinal direction and a relatively long anterior portion, the anterior end of the absorbent article protrudes outward from the anterior edge of the underwear. Even if the wearer shifts the absorbent article to the rear side in the longitudinal direction more than necessary so as not to prevent it, the absorbent article that can suppress the leakage of liquid excrement from the front side in the longitudinal direction is provided. To provide.

The absorbent article in the present invention has a longitudinal direction, a width direction, and a thickness direction, and is located on the absorption body including the absorber and the front side of the absorption body in the longitudinal direction, and has a predetermined function. An absorbent article comprising a functional body comprising a layer, the center line extending in the width direction through the center of the cloaca contact area of the absorption body in the longitudinal direction, and the front end of the absorber. The absorbent article, the distance of which is longer than the distance between the anterior edge of the absorber and the anterior edge of the absorbent article.

INDUSTRIAL APPLICABILITY According to the present invention, in an absorbent article having a functional layer on the front side in the longitudinal direction and a relatively long front portion, the front end portion of the absorbent article does not protrude outward from the front edge of the underwear. It is possible to provide an absorbent article capable of suppressing leakage of liquid from the front side in the longitudinal direction even if the wearer attaches the absorbent article to the rear side in the longitudinal direction by shifting it more than necessary.

It is a top view which shows the structural example of the absorbent article which concerns on embodiment. FIG. 3 is a cross-sectional view taken along the longitudinal center line in FIG. It is a back view which shows the structural example of the absorbent article which concerns on embodiment. It is a top view which shows the other structural example of the absorbent article which concerns on embodiment.

Specifically, the disclosure of the present invention relates to the following aspects.
[Aspect 1]
An absorption body having a longitudinal direction, a width direction, and a thickness direction and including an absorber, and a functional body located on the front side of the absorption body in the longitudinal direction and including a functional layer having a predetermined function. The distance between the center line extending in the width direction through the center of the excretion port contact area in the absorption body in the longitudinal direction and the front edge of the absorber is the distance between the absorbent article and the absorption body. An absorbent article that is longer than the distance between the anterior edge of the absorber and the anterior edge of the absorbent article.

In the present absorbent article, the distance between the widthwise centerline and the anterior edge of the absorber in the longitudinal direction is longer than the distance between the anterior edge of the absorber and the anterior edge of the absorbent article. However, the position of each edge shall be the position on the center line in the longitudinal direction. That is, in the region longitudinally anterior to the width centerline in the absorbent article, the longitudinal length of the region where the absorber is present is longer than the longitudinal length of the region where the absorber is not present. Therefore, in the region on the front side in the longitudinal direction of the absorbent article, a region of the absorber capable of absorbing liquid excrement can be secured sufficiently long in the longitudinal direction. Therefore, when an absorbent article having a functional layer on the front side in the longitudinal direction and a relatively long front portion is attached to the underwear, the wearer pays attention to the protrusion of the front end of the absorbent article. Even if the absorbent article is mounted on the rear side in the longitudinal direction by shifting it more than necessary, the area of the absorber can be sufficiently secured in the area on the front side in the longitudinal direction of the absorbent article, so that the excretion from the front side in the longitudinal direction is performed. It can suppress the leakage of things.

[Aspect 2]
The absorption body has a pair of wing portions extending outward in the width direction, and the center line connects the centers of the pair of wing portions in the longitudinal direction in the width direction. , The absorbent article according to aspect 1.
In this absorbent article, the position of the center line extending in the width direction is the position connecting the centers in the longitudinal direction of each of the pair of wing portions in the width direction. Therefore, the longitudinal length of the region where the absorber is present can be more reliably made longer than the longitudinal length of the region where the absorber is not present. As a result, a sufficient region of the absorber can be secured in the region on the front side in the longitudinal direction of the absorbent article, so that leakage of excrement from the front side in the longitudinal direction can be suppressed.

[Aspect 3]
The absorbent article according to aspect 1 or 2, wherein the functional body includes a low absorption portion having a lower absorption performance than the absorber.
The absorbent article has a low absorption portion in the functional body located on the front side of the absorption body. The low absorption portion is a portion where the amount of liquid absorbed is lower than that of the absorber, but the liquid can be absorbed to some extent. Therefore, even if a part of the liquid leaks from the longitudinal front edge of the absorber in the longitudinal front region of the absorbent article, the liquid can be captured by the low absorption portion. Thereby, it is possible to further suppress the liquid from leaking from the front side in the longitudinal direction of the absorbent article.

[Aspect 4]
The absorbent article according to aspect 3, wherein the absorber and the low absorption portion are continuous in the longitudinal direction when viewed from the width direction.
In the present absorbent article, the absorber and the low absorption portion are continuous in the longitudinal direction when viewed from the width direction, and therefore, both are substantially adjacent to each other in the longitudinal direction. Therefore, even if a part of the liquid leaks from the longitudinal front edge of the absorber in the longitudinal front region of the absorbent article, the liquid can be easily captured by the adjacent low absorption section. can. Thereby, it is possible to more easily suppress the liquid from leaking from the front side in the longitudinal direction of the absorbent article.

[Aspect 5]
The absorbent article according to aspect 3 or 4, wherein a part of the absorber and a part of the low absorption portion overlap in the thickness direction.
In this absorbent article, the absorber and the low absorption portion overlap in the longitudinal direction. Therefore, even if the liquid reaches the front edge of the absorber in the longitudinal direction in the region on the front side in the longitudinal direction of the absorbent article, the liquid can be transferred to the overlapping low absorption portions and absorbed as it is. .. Thereby, it is possible to more easily suppress the liquid from leaking from the front side in the longitudinal direction of the absorbent article.

[Aspect 6]
The absorbent article according to embodiment 5, wherein a part of the absorbent body overlaps with a skin-side portion of a part of the low-absorbing portion.
In this absorbent article, a part of the absorber overlaps with a part of the low absorption part on the skin side. That is, in the overlapping portion, a part of the absorber can ride on the part of the low absorption portion and get closer to the skin side. This makes it possible to more reliably suppress transmission leakage of liquid leaking along the skin surface in the longitudinal anterior region of the absorbent article, and thus more reliably leak liquid from the longitudinal anterior side of the absorbent article. Can be suppressed.

[Aspect 7]
The absorbent article according to aspect 5 or 6, further comprising a squeezed portion formed by squeezing a part of the absorber and a part of the low-absorbing portion while overlapping in the thickness direction.
The absorbent article has a squeezed portion in a portion where a part of the absorber and a part of the low absorption portion overlap. Therefore, even if the liquid moves toward the longitudinal anterior edge of the absorber in the longitudinal anterior region of the absorbent article, the squeezed portion blocks the movement to the deeper part of the absorber. The liquid can be diffused to other places. Thereby, the liquid can be more reliably suppressed from leaking from the front side in the longitudinal direction of the absorbent article.

[Aspect 8]
In the unfolded state, the absorbent article has a plurality of folding axes extending along the width direction and arranged in parallel with each other at predetermined intervals in the longitudinal direction, and one of the plurality of folding axes is a plurality of folding axes. The absorbent article according to any one of aspects 1 to 7, which is located on the side of the center line from the front edge of the absorber and on the front side of the center line in the longitudinal direction.
In the present absorbent article, in the longitudinal direction, there is a folding axis extending in the width direction on the center line side of the front edge of the absorber and on the front side of the center line. In the packaged state of the absorbent article, the absorber is folded at its folding shaft, so that when the absorbent article is opened and used, the absorber has a mark of being folded at the folding shaft. .. Therefore, even if the liquid moves toward the longitudinal anterior edge of the absorber in the longitudinal anterior region of the absorbent article, the traces of its fold axis block the movement of the absorber. The liquid can be diffused deep into the body or elsewhere. Thereby, the liquid can be more reliably suppressed from leaking from the front side in the longitudinal direction of the absorbent article.

[Aspect 9]
One of aspects 1 to 8, wherein the basis weight in the longitudinal direction of the absorber is higher than the basis weight in the longitudinal direction of the absorber. Absorbent article described in.
In this absorbent article, the basis weight of the absorber is higher on the front side in the longitudinal direction than on the longitudinal side of the center line than on the rear side in the longitudinal direction of the center line. That is, the amount of liquid absorbed is higher in the front side in the longitudinal direction than in the center line than in the rear side in the longitudinal direction of the center line. Therefore, even if the wearer attaches the absorbent article to the rear side in the longitudinal direction by shifting it more than necessary due to the protrusion of the front end portion of the absorbent article, the region on the front side in the longitudinal direction of the absorbent article. In the above, since the region of the absorber can be secured more sufficiently, the liquid can be more reliably suppressed from leaking from the front side in the longitudinal direction.

[Aspect 10]
An absorbent article that has a longitudinal direction, a width direction, and a thickness direction and includes an absorbing body including an absorber, and the absorbing body has a pair of wing portions extending to both outer sides in the width direction. Including, it has a center line connecting the centers of each of the pair of wing portions in the longitudinal direction in the width direction, and in the longitudinal direction from the center line in the absorber to the front edge of the absorber. An absorbent article having a length longer than the length from the center line of the absorber to the posterior edge of the absorber.
In the present absorbent article, in the region on the front side in the longitudinal direction, a region of the absorber capable of absorbing liquid excrement can be secured sufficiently long in the longitudinal direction. Therefore, when an absorbent article having a functional layer on the front side in the longitudinal direction and a relatively long front portion is attached to the underwear, the wearer pays attention to the protrusion of the front end of the absorbent article. Even if the absorbent article is mounted on the rear side in the longitudinal direction by shifting it more than necessary, the area of the absorber can be sufficiently secured in the area on the front side in the longitudinal direction of the absorbent article, so that the excretion from the front side in the longitudinal direction is performed. It can suppress the leakage of things.

[Aspect 11]
An absorption body having a longitudinal direction, a width direction, and a thickness direction and including an absorber, and a functional body located on the front side of the absorption body in the longitudinal direction and including a functional layer having a predetermined function. The absorbent article is further provided with an overlapping portion in which the absorber and the functional layer overlap in the thickness direction in the longitudinal direction, and a part of the absorber and the functional layer are provided in the overlapping portion. An absorbent article further comprising a squeezed portion formed by squeezing a part of the above in the thickness direction.
In this absorbent article, the liquid excrement that has moved toward the longitudinal front edge of the absorber is blocked by the squeezing portion to prevent the excrement from leaking from the longitudinal anterior side of the absorbent article. It can be surely suppressed. Further, when the size (width) of the pressed portion is long to some extent in the width direction, the rigidity of the absorber at the overlapping portion can be increased. As a result, the absorbent article is too long in the longitudinal direction, and twisting or width insertion occurs in a portion in the middle of the longitudinal direction, for example, an intermediate portion between the absorber and the functional layer. Can be suppressed with.

Hereinafter, the absorbent article according to the embodiment will be described by taking a sanitary napkin as an example. However, the absorbent article is not limited to the example, and may be another absorbent article as long as it does not deviate from the gist of the present invention. Other absorbent articles include, for example, panty liners, incontinence pads, and disposable diapers. In addition, the warmth function will be described below as an example of the predetermined function of the absorbent article. The warmth function is a function that allows the wearer to perceive the warmth through the skin, and is realized by, for example, a warmth agent held on a sheet or the like. However, the predetermined function is not limited to the example, and may be another predetermined function as long as it does not deviate from the gist of the present invention. Other predetermined functions include, for example, a cooling sensation function that allows the wearer to perceive a cooling sensation through the skin using a cooling sensation agent, and a heat retaining function that allows the wearer to perceive warmth by covering the skin with a non-woven fabric or the like. ..

The configuration of the menstrual napkin 1 according to the present embodiment will be described.
1 to 3 are views showing a configuration example of the menstrual napkin 1 according to the present embodiment. FIG. 1 is a plan view showing a state in which the individual packaging sheet 43 of the menstrual pad 1 is opened and unfolded. FIG. 2 is a cross-sectional view of the sanitary napkin 1 shown in FIG. 1 along the longitudinal center line CL (described later) (excluding the individual packaging sheet 43). FIG. 3 is a rear view showing the menstrual napkin 1 shown in FIG. 1 (excluding the individual packaging sheet 43). The menstrual napkin 1 of the present embodiment has a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to each other. In the menstrual napkin 1 drawn in FIG. 1, the upper side of the figure is the front side (front side) or the ventral side of the longitudinal direction L, and the lower side of the figure is the rear side (rear side) or the dorsal side of the longitudinal direction L. The view of the menstrual pad 1 placed on the plane including the longitudinal direction L and the width direction W from the upper side in the thickness direction T is called "planar view", and the shape grasped in the plan view is called "planar shape". Any direction in the plane including the longitudinal direction L and the width direction W is referred to as a "planar direction". When the wearer wears the menstrual napkin 1, the sides relatively close to and far from the skin surface of the wearer in the thickness direction T are referred to as "skin side" and "non-skin side", respectively. These definitions are also commonly used for each material of the menstrual napkin 1.

In the individual packaging sheet 43, both ends in the longitudinal direction L are longer than both ends in the longitudinal direction L of the menstrual napkin 1 outside the longitudinal direction L, and both ends in the width direction W are the ends of the menstrual napkin 1. It is formed so as to be longer outside the width direction W than both ends in the width direction W. That is, when the menstrual napkin 1 is placed on the individual wrapping sheet 43, it can be placed on the outside of the individual wrapping sheet 43 so that the menstrual napkin 1 does not protrude from the outside of the individual wrapping sheet 43, whereby the menstrual napkin 1 can be placed. When folded together with the individual packaging sheet 43, the menstrual napkin 1 can be packaged so as not to protrude from the outside of the individual packaging sheet 43.

The menstrual napkin 1 is mainly an absorption main body 3 that absorbs liquid excrement (example: menstrual blood) and a warm feeling main body 5 that is located on the front side of the absorption main body 3 in the longitudinal direction L and makes the skin perceive a warm feeling. And. That is, the menstrual napkin 1 is divided into an absorption main body 3 at the rear in the longitudinal direction L and a warmth main body 5 at the front in the longitudinal direction L. The shape of the absorption main body 3 is generally the shape of a general menstrual napkin, and includes a pair of wing portions 17, 17 extending to both outer sides in the width direction W. The shape of the warmth body 5 is not particularly limited, and examples thereof include triangles, rectangles, polygons (including cases where the corners are round and curved sides), circles and ellipses, shapes of organisms, or combinations thereof. Be done. In the menstrual napkin 1, the longitudinal center line CL (virtual line) extending in the longitudinal direction L through the center of the width direction W and the center of each of the pair of wing portions 17 and 17 in the longitudinal direction L are connected in the width direction W. However, it has a width direction center line CW (virtual line) that passes through the center of the longitudinal direction L and extends in the width direction W. In the menstrual napkin 1, the directions and sides toward the center line CL in the longitudinal direction are the inward and inside of the width direction W, respectively, and the directions and sides away from each other are the outward and outside of the width direction W, respectively. On the other hand, the directions and sides toward the center line CW in the width direction are defined as inward and inside of the longitudinal direction L, respectively, and the directions and sides toward the distance are defined as outward and outward in the longitudinal direction L, respectively. When each of the pair of wing portions 17 and 17 does not exist, the width direction center line CW extends in the width direction W through the center of the excretion port contact area 21 (described later) in the absorption body 3 in the longitudinal direction L. Let it be a line. In this embodiment, they are the same. Alternatively, when the absorber 11 (described later) is of a so-called hourglass type, the width direction center line CW passes through a position (excluding both ends) where the dimension of the width direction W of the absorber 11 is minimized in the longitudinal direction L. A line extending in the direction W.

The menstrual napkin 1 has 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, a liquid-permeable sheet 7, and a liquid-permeable sheet 7 in the absorbent body 3. It is provided with an absorber 11 arranged between the liquid impermeable sheets 9. Further, the sanitary napkin 1 has a liquid permeable sheet 7 that comes into contact with the wearer's skin when worn, a liquid permeable sheet 9 that comes into contact with clothing when worn, a liquid permeable sheet 7, and a liquid permeable sheet 7 in the warmth body 5. A warming agent holding sheet 13 arranged between the liquid impermeable sheets 9 is provided. The warming agent holding sheet 13 is located on the front side in the longitudinal direction L with respect to the absorber 11. The liquid permeable sheet 7 in the absorption main body 3 and the liquid permeable sheet 7 in the warm feeling main body 5 are integral sheets. Further, the liquid impermeable sheet 9 in the absorption main body 3 and the liquid impermeable sheet 9 in the warm feeling main body 5 are integral sheets. However, the integrated sheet includes not only the case where the material is a single sheet but also a sheet in which a plurality of sheets are combined and integrated. The absorber 11 in the absorbing main body 3 and the warming agent holding sheet 13 in the warm feeling main body 5 are different members. The overlapping portion 15 is formed by overlapping the front end portion of the absorber 11 in the longitudinal direction L with the rear end portion of the warming agent holding sheet 13 in the longitudinal direction L in the thickness direction T. That is, in the longitudinal direction L, the front edge 11E1 of the absorber 11 is located in front of the rear edge 13E2 of the warming agent holding sheet 13. In this case, in the overlapping portion 15, the end portion of the absorber 11 is arranged on the end portion of the warming agent holding sheet 13. This is to suppress the leakage of excrement in the front in the longitudinal direction L. In another embodiment, when the function of warmth is emphasized, in the overlapping portion 15, the end portion of the warming agent holding sheet 13 is arranged on the end portion of the absorber 11. In yet another embodiment, the end portion of the absorber 11 and the end portion of the warming agent holding sheet 13 do not overlap in a plan view (the overlapping portion 15 does not exist), and the edges thereof are not overlapped with each other. Touched or separated. In yet another embodiment, the position of the front edge 11E1 of the absorber 11 in the longitudinal direction L overlaps with or exceeds the position of the front edge 13E1 of the warming agent holding sheet 13 in the longitudinal direction L. Also exists on the outside. In other words, the warming agent holding sheet 13 overlaps with the absorber 11 over the entire area of the longitudinal direction L. In this case, the warming agent holding sheet 13 may be arranged closer to the skin than the absorber 11, or the warming agent 50 may be applied to the absorber 11, the liquid permeable sheet 7 or the liquid diffusion sheet 41.

As another embodiment, when a predetermined function given to the menstrual napkin 1 is a cooling sensation function, the cooling sensation main body 5 is replaced with a cooling sensation main body having the same shape, and the warming agent holding sheet 13 has the same shape. It is replaced with a cooling agent holding sheet. Further, as yet another embodiment, when the predetermined function given to the menstrual napkin 1 is the heat insulating function, the warming body 5 is replaced with the heat insulating body having the same shape, and the warming agent holding sheet 13 has the same shape. It is replaced with a heat insulating sheet.

In the present embodiment, the range of the longitudinal direction L in the absorption body 3 is the range from the rear edge of the sanitary napkin 1 to the front edge 11E1 of the absorber 11. On the other hand, the range of the longitudinal direction L in the warmth body 5 is the range from the front edge 11E1 of the absorber 11 to the front edge of the menstrual pad 1. The range of the width direction W in the absorption main body 3 and the warmth main body 5 is the full width range. In this case, it can be said that the overlapping portion 15 is included in the absorbing main body 3, and the rear end portion of the warming agent holding sheet 13 of the warm feeling main body 5 extending in the longitudinal direction L extends into the absorbing main body 3. Further, in the longitudinal direction L, the absorption body 3 has a front region 3a from the width direction center line CW to the front edge 11E1 of the absorber 11 and from the width direction center line CW to the rear edge of the sanitary napkin 1. It is partitioned into the rear region 3b of the. However, in the longitudinal direction L, the front and rear edge edges of the menstrual napkin 1, the front and rear edge edges 11E1 and 11E2 of the absorber 11, and the front and rear edge edges 13E1 and 13E2 of the warming agent holding sheet 13 , Both are the outermost positions in the longitudinal direction L. In the present embodiment, the edge edges 11E1 and 11E2 and the edge edges 13E1 and 13E2 are all intersections with the longitudinal center line CL.

In the sanitary napkin 1, in the absorption body 3, the excretion port contact area 21 is located in the center of the longitudinal direction L and slightly forward and in the center of the width direction W in the plan view, and is not excreted as other areas around it. The mouth contact area 23 is located. The excretion port contact area 21 is an area that faces or contacts the wearer's excretion port when the menstrual napkin 1 is worn. The excretion port contact area 21 is determined according to the type and use of the absorbent article. The excretion port contact area 21 is, for example, slightly forward of the center of the absorber 11 in the longitudinal direction L, and has a length of about 1/4 to 2/3 of the total length of the absorber 11 in the longitudinal direction L, and is set in the width direction W. In the center of the absorber 11, the width is about 1/3 to 3/4 of the total length of the absorber 11 in the width direction W. When a pair of wing portions 17 and 17 are present as in the present embodiment, the excretion port contact area 21 is formed on a line connecting the centers of the longitudinal direction L in each of the pair of wing portions 17 and 17 in the width direction W. The center of the longitudinal direction L is located. Alternatively, when the absorber 11 is a so-called hourglass type, the dimension of the width direction W of the absorber is the smallest in the longitudinal direction of the excretion port contact area 21 except for both ends of the absorber 11 in the longitudinal direction L. The center of L is located. However, misalignment within the specified length range shall be allowed. The predetermined length is 5% of the length of the absorber 11 in the longitudinal direction L.

The liquid permeable sheet 7 includes a surface sheet 7a and a pair of side sheets 7b and 7b bonded to both sides of the surface sheet 7a in the width direction W. The dimension of the surface sheet 7a in the width direction W is approximately the same as the dimension of the absorber 11 in the width direction W. Each side sheet 7b is located at the inner end of the width direction W and includes a leak-proof wall 7W extending along the longitudinal direction L. That is, the liquid permeable sheet 7 includes a pair of leakage-proof walls 7W and 7W. Each leak-proof wall 7W has an outer edge as a fixed end and an inner edge as a free end in the width direction W, and extends above the thickness direction T of the surface sheet 7a. .. The pair of leak-proof walls 7W and 7W are formed so that the free end can stand upright on the skin side when the sanitary napkin 1 is attached. The pair of leakage-proof walls 7W and 7W are formed on the absorption main body 3 and the warm feeling main body 5, and while suppressing the leakage of excrement mainly to the outside of the width direction W, the warm feeling of the warm feeling main body 5 is suppressed. Prevents and retains warm air from escaping to the outside of the width direction W due to the effect of. In another embodiment, the liquid permeable sheet 7 does not have a pair of side sheets 7b, 7b. In yet another embodiment, the liquid permeable sheet 7 does not have a pair of leakproof walls 7W, 7W.

The menstrual napkin 1 includes a liquid diffusion sheet 41 that is in contact with the non-skin side of the surface sheet 7a and diffuses excrement in a plane direction. That is, the liquid diffusion sheet 41 is arranged between the surface sheet 7a, the absorber 11, and the warming agent holding sheet 13. The liquid diffusion sheet 41 and the surface sheet 7a have a plurality of sheet pressing portions (not shown) formed by pressing the surface sheet 7a from the skin side surface toward the liquid diffusion sheet 41. The plurality of sheet pressing portions integrate the surface sheet 7a and the liquid diffusion sheet 41, and form a slight gap between the surface sheet 7a and the liquid diffusion sheet 41 at the time of mounting, and are warmed by the effect of warmth. Can retain air. In another embodiment, the menstrual napkin 1 does not have a liquid diffusion sheet 41.

The absorber 11 is divided into a central region 62 located substantially in the center in the longitudinal direction L, a front region 61 adjacent to the front of the central region 62, and a rear region 63 adjacent to the rear of the central region 62. .. Here, the central region 62 includes a region corresponding to the excretion opening contact region 21, and is located in a range further forward in the longitudinal direction L. 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 region on the front side in the longitudinal direction L from the width direction center line CW is higher than the basis weight in the region on the rear side of the longitudinal direction L than the width direction center line CW. In other words, in the absorber 11, the basis weight of the region from the width center line CW to the front edge 11E1 in the longitudinal direction L is the region from the width center line CW to the rear edge 11E2 in the longitudinal direction L. Higher than the basis weight. As a result, the amount of absorption in the excretion port contact area 21 slightly forward in the center of the longitudinal direction L is increased, and the wearer's excretion port is slightly displaced forward in the longitudinal direction L from the excretion port contact area 21. Even when the menstrual napkin 1 is attached in this state, the absorber 11 can reliably absorb the excrement. In another embodiment, the basis weight of the absorber 11 is high in a specific portion different from the above, or is substantially constant in the entire region.

The absorber 11 includes an absorption core (not shown) and a core wrap (not shown) that encloses the absorption core. The absorber 11 has a plurality of absorber squeezing portions (not shown) formed by squeezing the core wrap from the skin side surface toward the inside of the absorption core. The plurality of absorber pressing portions suppress the shape loss of the absorber 11. Further, since the plurality of absorbent body squeezed portions are recessed toward the non-skin side, a slight space can be formed between the absorbent body squeezed portion and the liquid diffusion sheet 41 to retain warm air due to the effect of warmth. In another embodiment, the absorber 11 does not use a core wrap. In yet another embodiment, the absorber 11 does not have an absorber squeezing portion.

The warming agent holding sheet 13 (functional layer) is composed of a one-layer or a plurality of layers of sheets such as a non-woven fabric capable of holding a liquid (excretion), and contains the warming agent 50 (functional agent). .. The shape of the warming agent holding sheet 13 is not particularly limited as long as it can be arranged inside the peripheral edge portion 27 of the sanitary napkin 1 that suppresses leakage of the warming agent 50. A reduced shape can be mentioned. The warming agent 50 stimulates the temperature receptor (heat sensory receptor) of the skin without heating the body of the wearer of the menstrual napkin 1 or its vicinity thereof, and makes the wearer perceive the warmth. It contains a warming component and further contains a solvent component capable of dissolving or dispersing the warming component. The warming agent 50 contains a fluid component or a volatile component that can move from the arranged place due to the influence of temperature, atmospheric pressure, external force, etc. in the form of a gas or a liquid, for example, at least a warming component and a solvent component. One contains a fluid component or a volatile component. Even if the warming agent holding sheet 13 is arranged on the non-skin side of the liquid permeable sheet 7, the warming agent 50 of the warming agent holding sheet 13 elutes or elutes, for example, when the sanitary napkin 1 is worn. It can permeate the liquid permeable sheet 7 by volatilization or the like and come into contact with the skin of the wearer's lower abdomen. Thereby, the warming component of the warming agent 50 stimulates the heat sensory receptor of the skin, and can give a warm feeling to the lower abdomen of the wearer.

The warming agent 50 is arranged in the inner central portion 25 of the warming agent holding sheet 13 excluding the peripheral portion in a plan view. The length of the warming agent holding sheet 13 in the width direction W is configured to be longer than the length of the absorber 11 in the width direction W. As a result, the effect of the warming agent 50 extends over a wider region in the width direction W than the absorber 11. In another embodiment, in a plan view, the warming agent 50 is arranged on the entire surface including the peripheral portion of the warming agent holding sheet 13. In yet another embodiment, the warming agent 50 extends in the longitudinal direction L within a predetermined portion of the warming agent holding sheet 13, for example, in the width direction W of the surface sheet 7a, and is arranged in the width direction W. It is placed in the striped part. In still another embodiment, the length of the warming 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. In yet another embodiment, the warming agent 50 does not contain a solvent component. In yet another embodiment, the warming agent 50 is arranged at least in the absorbing main body 3 (eg, liquid permeable sheet 7, absorbent 11) among the warming main body 5 and the absorbing main body 3. In yet another embodiment, the warming body 5 has a support sheet that supports the warming agent holding sheet 13 on the non-skin side of the warming agent holding sheet 13.

As another embodiment, when a predetermined function imparted to the sanitary napkin 1 is a cooling sensation function, the cooling sensation agent holding sheet contains a cooling sensation agent (functional agent), and the cooling sensation agent is a cooling sensation component. Contains solvent components. Further, as yet another embodiment, when the predetermined function imparted to the menstrual napkin 1 is a heat retaining function, the heat insulating non-woven fabric sheet does not contain a functional agent and contains, for example, a non-woven fabric having high heat retaining property.

Since the warming agent holding sheet 13 is composed of a sheet capable of holding a liquid (example: non-woven fabric), it can absorb excrement, though not as much as the absorber 11. Therefore, the warming agent holding sheet 13 can be seen as a low absorption portion having a lower absorption performance than the absorber 11. Although the low absorption portion belongs to the warm feeling main body 5, it can assist the absorption of excrement in the front in the longitudinal direction L. Here, due to the relationship between the warming agent holding sheet 13 and the absorber 11, the absorber 11 and the low absorption portion (warming agent holding sheet 13) are continuous in the longitudinal direction L when viewed from the width direction W. It can be said that there is. Similarly, a part of the absorber 11 and a part of the low absorption portion overlap in the thickness direction T in the overlapping portion 15, and a part of the absorber 11 is on the skin side in a part of the low absorption portion. It rides on the part of and overlaps. As another embodiment, when the warming sensation main body 5 has a support sheet (example: non-woven fabric) having substantially the same shape as the warming agent holding sheet 13 in a plan view, for example, on the non-skin side of the warming agent holding sheet 13. , The support sheet can be seen as a low absorption portion having lower absorption performance than the absorber 11 with or without the warming agent holding sheet 13. In yet another embodiment, the support sheet is a thin absorber containing pulp fibers for improved absorption performance.

The menstrual napkin 1 is provided with an adhesive portion for fixing the menstrual napkin 1 to the wearer's clothes in both the absorption main body 3 and the warmth main body 5. One surface of the adhesive portion is fixed to the liquid-impermeable sheet 9, and the other surface is temporarily fixed to the individual packaging sheet 43 of the menstrual napkin 1. Of these, the absorption body 3 is arranged in a region overlapping the absorber 11 in a plan view, for example, the adhesive portion 73 extending along the longitudinal direction L and intermittently lined up in the width direction W, and the width of the wing portion 17. An adhesive portion 71 extending along the longitudinal direction L is arranged at a substantially central portion of the direction W. On the other hand, in the warm feeling main body 5, the adhesive portions 72 are arranged in the regions at both ends in the width direction W. In another embodiment, the other surface of the adhesive portion is temporarily fixed to the release sheet fixed to the individual packaging sheet 43.

However, the warming agent holding sheet 13 and the adhesive portion 72 are arranged at positions where they partially overlap each other or do not overlap each other at all in the thickness direction T. This is to prevent the warming agent 50 from reaching the adhesive portion 72 and deteriorating the adhesive portion 72. For example, the adhesive portion 72 is formed at a position that does not overlap with the thickness direction T with respect to at least the central portion of the warming agent holding sheet 13 in the width direction W in which the warming agent 50 is arranged. Here, the central portion 25 in the width direction W of the warming agent holding sheet 13 is the width of the warming agent holding sheet 13 on both sides of the width direction W from the longitudinal center line CL from the viewpoint of enhancing the warming function. It is in the range of up to 30% of the width of the direction W, preferably in the range of up to 40%, and more preferably in the range of up to 45%.

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

Then, in the menstrual napkin 1, when individually wrapped, the portion outside the width direction W from both folding lines (a pair) with the first folding line F1 in the longitudinal direction and the second folding line F2 in the longitudinal direction as the base axes together with the individual packaging sheet 43. The outer part of each) is folded toward the surface on the skin side. Next, in the sanitary napkin 1 folded together with the individual wrapping sheet 43, the outer portions of the longitudinal direction L from both fold lines are the surfaces on the skin side with the width direction first fold line F3 and the width direction second fold line F4 as the basic axes. Folds towards. After that, one end of the individual wrapping sheet 43 is fixed to the individual wrapping sheet 43 facing the individual wrapping sheet 43 with the fixing tape 45. As a result, an individual package of the menstrual napkin 1 is formed. Then, the menstrual napkin 1 is opened when it is used, that is, when the individual packaging is opened, in the reverse procedure of the individual packaging.

Further, the menstrual napkin 1 has a plurality of pressing portions 31, 33. The plurality of pressing portions 31 are arranged in a curved shape continuously or intermittently so as to surround the excretion opening contact area 21 mainly in the absorption main body 3. The plurality of pressing portions 33 are arranged in the absorption main body 3 in a dot-like manner in a region surrounded by the plurality of pressing portions 31. The squeezed portions 31 and 33 are formed by squeezing the liquid permeable sheet 7 and the absorber 11 (further, the warming agent holding sheet 13 in the overlapping portion 15) from the skin side to the non-skin side. The shape and arrangement of the plurality of pressing portions 31, 33 are arbitrary. In another embodiment, the warmth body 5 is further formed by squeezing the liquid permeable sheet 7 and the warming agent holding sheet 13 (further absorber 11 in the overlapping portion 15) from the skin side to the non-skin side. It is provided with one or more squeezing sections. The shape of the squeezed part is arbitrary.

Further, the menstrual 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 the peripheral portion 27 thereof by a known method such as heat sealing. In the sanitary napkin 1, the non-skin side surface of the liquid permeable sheet 7 and the skin side surface of the absorber 11 and the warming agent holding sheet 13 are bonded with an adhesive (example: hot melt adhesive) or the like. The non-skin side surface of the absorber 11 and the warming agent holding sheet 13 and the skin side surface of the liquid impermeable sheet 9 are bonded with an adhesive (same as above) or the like.

Here, the sanitary napkin 1 has a warmth main body 5 on the front side (ventral side) of the longitudinal direction L in addition to the absorption main body 3. Therefore, the menstrual napkin 1 becomes longer in the longitudinal direction L as a whole as compared with the normal menstrual napkin. Therefore, when the wearer wears the sanitary napkin 1 on the underwear, the front part (warm body 5) in the longitudinal direction L protrudes outward from the front edge of the underwear (waist opening). I will wear it while being conscious of not having it. At that time, in the case where the wearer shifts the sanitary napkin 1 more than necessary to the rear side (dorsal side) of the longitudinal direction L so that the protrusion of the front end portion of the sanitary napkin 1 can be more reliably prevented. Can be considered. That is, it is conceivable that the position of the absorber 11 of the absorption main body 3, which is suitable for absorbing liquid excrement, may be shifted to the rear side more than necessary. In that case, in the region on the front side of the sanitary napkin 1 in the longitudinal direction L, the region of the absorber 11 is reduced, and the excrement is not sufficiently absorbed by the absorber 11 and may leak from the front side.

Therefore, in the menstrual napkin 1 of the present embodiment, in the longitudinal direction L, the distance between the widthwise center line CW and the front edge 11E1 of the absorber 11 is set to the front edge 11E1 of the absorber 11. It is configured to be longer than the distance from the front edge of the menstrual napkin 1. In other words, the menstrual napkin 1 is configured such that the length of the front region 3a of the absorption body 3 is longer than the length of the warmth body 5 in the longitudinal direction L.

That is, in the region in front of the width center line CW in the sanitary napkin 1 in the longitudinal direction L, the length of the region L in the longitudinal direction in which the absorber 11 exists is the length L in the longitudinal direction L in the region in which the absorber 11 does not exist. Longer than the length of. Therefore, in the region on the front side of the menstrual napkin 1 in the longitudinal direction L, a region of the absorber 11 capable of absorbing excrement (eg, menstrual blood) can be sufficiently secured in the longitudinal direction L. Therefore, in the longitudinal direction L, when the menstrual napkin 1 having the warmth body 5 on the front side and the front part is relatively long is attached to the underwear, the wearer is concerned about the protrusion of the front end. However, even if the menstrual napkin 1 is attached to the rear side by shifting it more than necessary, the area of the absorber 11 can be sufficiently secured in the area on the front side of the menstrual napkin 1, so that the leakage of excrement from the front side is suppressed. can.

From the viewpoint of the effect of suppressing the leakage of excrement from the front side, the lower limit of the length of the front region 3a of the absorption main body 3 is preferably 110% or more of the length of the warm feeling main body 5, more preferably 120. % Or more, and even more preferably 130% or more. On the other hand, the upper limit of the length of the front region 3a of the absorption main body 3 is not particularly limited. For example, when the size of the absorber 11 in the front region 3a is set to be equal to or less than the size of the absorber 11 in the rear region 3b, the upper limit thereof is preferably 300% or less of the length of the warm feeling main body 5. It is more preferably 200% or less, and even more preferably 160% or less. This is from the viewpoint of sufficiently obtaining the effect of the warmth of the warmth main body 5. For example, when the size of the absorber 11 in the front region 3a is from the center line CW in the width direction to the front edge of the sanitary napkin 1 in the longitudinal direction L, in other words, the warming agent holding sheet 13 is L in the longitudinal direction. When it overlaps with the absorber 11 over the entire area of the above, there is substantially no upper limit thereof. In such a case, the length of the absorber 11 in the front region 3a in the longitudinal direction L is larger than the length of the absorber 11 in the rear region 3b in the longitudinal direction L. Warmth sensation While maintaining the effect of the warmth sensation of the main body 5, it is possible to further improve the absorption performance in the region on the front side in the longitudinal direction L.

Next, a preferable method of using the menstrual napkin 1 according to the present embodiment will be described.
When the wearer wears the sanitary napkin 1, first, the sanitary napkin 1 is dressed so that the excretion port contact area 21 of the absorber 11 of the absorption body 3 corresponds to the wearer's excretion port (example: shorts). ). As a result, the menstrual napkin 1 is fixed to the clothes so that the warming agent holding sheet 13 of the warming body 5 corresponds to the lower abdomen of the wearer. Then, the menstrual napkin 1 is used in a state where the skin-side surface of the warmth body 5 is in contact with the skin of the wearer's lower abdomen.

In other words, in the sanitary napkin 1, when the absorption body 3 is arranged on the clothes so that the excretion port contact area 21 of the absorber 11 abuts on the wearer's excretion port, the warming agent holding sheet 13 is attached to the wearer. It has a shape that is arranged at a position corresponding to the lower abdomen. Therefore, the distance between the excretion port contact area 21 of the absorber 11 of the absorption body 3 and the warming agent holding sheet 13 of the warmth body 5 is the distance between the wearer's excretion port and the lower abdomen (on the skin surface). Distance) is approximately equal to.

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 the clothes and used, the warming agent 50 contained in the warming agent holding sheet 13 permeates the liquid permeable sheet 7 and comes into contact with the wearer's skin. It is possible to efficiently activate the TRP channel of the warming agent contact portion in contact with the warming component on the wearer's skin, and efficiently impart the warmth to the wearer's lower abdomen.

By imparting a warm sensation to the wearer's lower abdomen, the TRP channel of the warming agent contact portion that was in contact with the warm sensation component in the skin of the wearer's lower abdomen is activated, and as a result, via the sympathetic nervous system. It can be expected that heat is generated from the contact portion of the warming agent and the temperature of the contact portion of the warming component on the wearer's skin is raised. As a result, it is expected to warm the part near the uterus of the wearer, excrete the pain substance prostaglandin, and relieve the wearer's menstrual pain. By warming the part of the wearer near the uterus, it is expected to reduce the wearer's Premenstrual Syndrome, poor circulation, and menopausal disorders. By promoting blood circulation (promoting lymphatic flow), it is expected that waste products will be discharged, coldness will be improved, fat burning will be improved, and immunity will be improved.

In a preferred embodiment of the present embodiment, the warmth main body (functional main body) 5 includes a low absorption portion (example: warmth agent holding sheet 13) having a lower absorption performance than the absorber 11. The low absorption portion is a portion where the amount of liquid excrement (eg, menstrual blood) absorbed is lower than that of the absorber 11, but the excrement can be absorbed to some extent. Therefore, even if a part of excrement leaks from the front edge of the absorber 11 in the longitudinal direction L in the region on the front side of the sanitary napkin 1 in the longitudinal direction L, the excrement is captured by the low absorption portion. be able to. Thereby, it is possible to further suppress the leakage of excrement from the front side in the longitudinal direction of the menstrual napkin 1.

Further, in a preferred embodiment of the present embodiment, the absorber 11 and the low absorption portion (eg, the warming agent holding sheet 13) are continuous in the longitudinal direction L when viewed from the width direction W. Therefore, both are substantially adjacent to each other in the longitudinal direction L. Therefore, even if a part of excrement leaks from the front edge of the absorber 11 in the longitudinal direction L in the region on the front side of the sanitary napkin 1 in the longitudinal direction L, the excrement is excreted in the adjacent low absorption portion. Can be easily captured. Thereby, it is possible to more easily suppress the liquid from leaking from the front side of the sanitary napkin 1 in the longitudinal direction L. However, continuous in the longitudinal direction L when viewed from the width direction W means that one of the absorber 11 and the low absorption portion is in contact with the other in the longitudinal direction L, overlaps with the thickness direction T, and is in the width direction. Includes at least one case of being adjacent to (not necessarily in contact with) W.

Further, in a preferred embodiment of the present embodiment, a part of the absorber 11 and a (at least) part of the low absorption portion (example: warming agent holding sheet 13) overlap in the thickness direction T (exemplification:). Overlapping part 15). In other words, part or all of the low absorption portion and part of the absorber 11 overlap in the thickness direction T. Therefore, even if liquid excrement reaches the front edge of the absorber 11 in the longitudinal direction L in the region on the front side in the longitudinal direction L of one menstrual napkin, the excrement remains in the overlapping low absorption portion. Can be transferred and absorbed. Thereby, it is possible to more easily suppress the leakage of excrement from the front side of the sanitary napkin 1 in the longitudinal direction L.

Further, in a preferred embodiment of the present embodiment, a part of the absorber 11 overlaps with the skin-side part of a part of the low absorption part (example: warming agent holding sheet 13) (example: overlapping part 15). ). That is, in the overlapping portion, a part of the absorber 11 rides on a part of the low absorption portion and can be closer to the skin side. Thereby, in the region on the front side of the menstrual napkin 1 in the longitudinal direction L, it is possible to more reliably suppress the transmission leakage of the liquid excrement leaking along the skin surface, and therefore, from the front side of the menstrual napkin 1 in the longitudinal direction L. Leakage of excrement can be suppressed more reliably.

Further, in a preferred embodiment of the present embodiment, the menstrual napkin 1 is squeezed while overlapping a part of the absorber 11 and a part of the low absorption part (example: warming agent holding sheet 13) in the thickness direction T. (Example: a part of the front side of the squeezing portion 31 in the longitudinal direction L) is further provided. Therefore, even if liquid excrement moves toward the front edge of the absorber 11 in the longitudinal direction L in the region on the front side of the sanitary napkin 1 in the longitudinal direction L, the squeezing portion 31 moves the excrement. The excrement can be diffused to the deep part of the absorber 11 and other places by blocking it. Thereby, it is possible to more reliably suppress the leakage of excrement from the front side of the sanitary napkin 1 in the longitudinal direction L.

Further, in a preferred embodiment of the present embodiment, the sanitary napkin 1 is the absorber 11 in the overlapping portion 15 where the absorber 11 and the functional layer (example: warming agent holding sheet 13) overlap in the thickness direction T. A squeezed portion formed by squeezing a part (on the front side of the longitudinal direction L) and a part (rear side of the longitudinal direction L) of the functional layer in the thickness direction T (example: the longitudinal direction L of the squeezing portion 31). A part of the front side of) is further provided. As a result, the liquid excrement that has moved toward the front edge of the absorber 11 in the longitudinal direction L is blocked by the squeezing portion 31, and the excrement leaks from the front side of the sanitary napkin 1 in the longitudinal direction L. It can be surely suppressed.

Further, FIG. 4 is a plan view showing another configuration example of the absorbent article according to the embodiment. In another preferred embodiment of the present embodiment shown in this figure, the menstrual napkin 1 has an overlapping portion 15 in which the absorber 11 and the functional layer (eg, the warming agent holding sheet 13) overlap in the thickness direction T. Further includes a squeezed portion 31a formed by squeezing a part of the absorber 11 (on the front side of the longitudinal direction L) and a part of the functional layer (on the rear side of the longitudinal direction L) in the thickness direction T. Also in this case, the liquid excrement that has moved toward the front edge of the absorber 11 in the longitudinal direction L is blocked by the squeezing portion 31a, and the excrement is excreted from the front side of the sanitary napkin 1 in the longitudinal direction L. Can be reliably suppressed from leaking. Further, in the width direction W, the dimension (width) of the squeezed portion 31a occupies at least 30% or more, preferably 50% or more, more preferably 70% or more of the dimension (width) of the absorber 11. Thereby, the rigidity of the absorber 11 at the overlapping portion 15 can be increased. As a result, the menstrual napkin 1 is too long in the longitudinal direction L, and is twisted in a portion in the middle of the longitudinal direction L, for example, an intermediate portion between the absorber 11 and the functional layer (example: warming agent holding sheet 13). The squeezing portion 31a can suppress the phenomenon that the width is inserted.

Further, in a preferred embodiment of the present embodiment, one of a plurality of folding axes extending in the width direction W (example: first folding line F3 in the width direction and second folding line F4 in the width direction) (example: first folding line F3 in the width direction) is In the longitudinal direction L, the absorber 11 is located on the width direction center line CW side of the front edge 11E1 and on the front side of the width direction center line CW. That is, in the longitudinal direction L, the folding axis (first folding line F3 in the width direction) exists on the width direction center line CW side with respect to the front edge 11E1 at the front end portion of the absorber 11. Here, in the individually packaged state of the menstrual napkin 1, since the absorber 11 is bent at least by its folding shaft, when the sanitary napkin 1 is opened and used, the absorber 11 is folded by its folding shaft. The trace that was bent remains. Therefore, even if liquid excrement moves toward the front edge of the absorber 11 in the longitudinal direction in the region on the front side of the sanitary napkin 1 in the longitudinal direction L, the movement thereof is due to the trace of the folding axis. The excrement can be diffused to the deep part of the absorber 11 and other places. Thereby, the leakage of excrement from the front side in the longitudinal direction L of the sanitary napkin 1 can be more reliably suppressed.

Further, in a preferred embodiment of the present embodiment, the basis weight of the front side (front region 3a) of the absorber 11 in the longitudinal direction L with respect to the width direction center line CW is the longitudinal direction L with respect to the width direction center line CW in the absorber 11. It is higher than the basis weight on the rear side (rear area 3b). That is, the amount of liquid excrement that can be absorbed is higher on the front side in the longitudinal direction than on the rear side than on the width direction center line CW. Therefore, even if the wearer is concerned about the protrusion of the front end of the menstrual napkin 1 and the wearer shifts the menstrual napkin 1 to the rear side of the longitudinal direction L more than necessary, the menstrual napkin 1 is mounted in the longitudinal direction. Since the region of the absorber 11 can be more sufficiently secured in the region on the front side of L, it is possible to more reliably suppress the leakage of excrement from the front side in the longitudinal direction L.

In each of the above embodiments, the functional component contained in the functional agent (example: warming agent 50) possessed by the functional layer having a predetermined function (example: warming agent holding sheet 13) is a warming component. However, the present invention is not limited to this example, and the type of the functional component may be another type, for example, a cooling sensation component of a cooling sensation agent or an exothermic component of an exothermic agent. When a cooling sensation agent is used, the functional layer is, for example, a sheet having a cooling sensation agent containing a cooling sensation component and a solvent component. When an exothermic agent is used, the functional layer is, for example, a sheet having an exothermic agent containing an exothermic component and a solvent component. Further, when the predetermined function is a heat insulating function, the functional layer is a non-woven fabric-like sheet having high heat insulating property (example: easy to hold warm air), and does not necessarily contain a functional agent.

The functional agent may be protected by a water-disintegrating protective material, such as microcapsules, to prevent the sanitary napkin 1 from volatilizing or moving to other areas by the time it is used. .. Microcapsules contain functional agents and disintegrate when exposed to liquids (eg menstrual blood, urine, sweat), releasing the functional agents to the outside. The released functional agent exerts a predetermined function on the wearer by vaporizing due to the wearer's body temperature or the like or by coming into contact with the wearer's skin.

Materials for microcapsules include, for example, saccharides such as monosaccharides (eg glucose), disaccharides (eg sucrose) and polysaccharides (eg dextrin, glucomannan, sodium alginate, water-soluble starch), gelatin, etc. Examples thereof include water-soluble polymers (eg, polyvinyl alcohol, polyvinyl acetate) and the like.

Microcapsules are commercially available, and examples thereof include INCAP ™, which is commercially available from Symrise. Further, the microcapsules are produced, for example, by dissolving the material of the microcapsules in water to form an aqueous solution, mixing the functional agent and the surfactant with the aqueous solution, and drying under reduced pressure while spraying the aqueous solution. Can be done.

Further, as an embodiment different from the embodiment described with reference to FIGS. 1 to 4, the menstrual napkin has a front edge in the longitudinal direction L in the absorber 11 from the width center line CW in the absorber 11. The length up to 11E1 is longer than the length from the width center line CW in the absorber 11 to the rear edge 11E2 in the longitudinal direction L in the absorber 11.
Specifically, for example, in the sanitary napkin 1 of FIGS. 1 and 4, the absorber 11 is long in the front side in the longitudinal direction L, and the front edge 11E1 of the absorber 11 is the length of the warming agent holding sheet 13. It may be located in the vicinity of the edge 13E1 on the front side in the direction L. Alternatively, for example, since the warming agent holding sheet 13 also has a function as an absorber (liquid absorbency and liquid holdability), it may be considered as an absorber. Alternatively, for example, there may be a case where the functional layer (eg, the warming agent holding sheet 13) is not provided, and the absorber 11 is long in the front side in the longitudinal direction L and extends to the region of the warming agent holding sheet 13. Be done.

According to this other embodiment, in the region on the front side of the menstrual pad 1 in the longitudinal direction L, the region of the absorber 11 capable of absorbing liquid excrement can be secured sufficiently long in the longitudinal direction L. Therefore, when the menstrual napkin 1 having a relatively long front portion is attached to the underwear, such as when the functional layer (example: warming agent holding sheet 13) is provided on the front side in the longitudinal direction L, the menstrual napkin 1 Even if the wearer shifts the menstrual pad 1 more than necessary to the rear side of the menstrual pad L due to the protrusion of the front end of the menstrual pad, in the region on the front side of the menstrual pad 1 in the longitudinal direction L. Since the region of the absorber 11 can be sufficiently secured, the leakage of excrement from the front side in the longitudinal direction L can be suppressed.

(Each material, etc. in menstrual napkin 1)
Next, each material and the like in the menstrual napkin 1 in each embodiment will be described.

The warming agent holding sheet 13 as a functional layer in each of the above embodiments has a warming agent 50 containing a warming sensation component and a solvent component that activate TRP channels (temperature receptors (heat sensory receptors)). is doing.

The warming agent 50 contains, for example, a warming component that activates TRP channels and a solvent component. The warming component is not particularly limited as long as it activates the TRP channel, and examples thereof include 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. and can give a high warmth to the wearer.

As the warming component, a plant-derived compound is preferable from the viewpoint of the wearer's sense of security. Examples of the warming component include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonibamide, etc.), capsantin, benzyl nicotinate, β-butoxyethyl nicotinate, N-acyl crocodile. Luamide, nonanoic acid vanillylamide, polyhydric alcohol, capsaicin powder, capsaicin tincture, capsaicin extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivative (eg vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vani) Lilhexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratrial alcohol derivative, substituted benzyl alcohol derivative, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger Included are oils, zingerols, zingerons, hesperidin, and pyrrolidone carboxylic acids, and any combination thereof. Among them, the warming component is preferably not capsaicin from the viewpoint that the wearer does not feel pain easily, and vanillyl alcohol alkyl ether derivatives (eg, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, etc. Vanillyl hexyl ether), ginger extract, ginger oil, gingerol, and zingeron, and any combination thereof are more preferred.

The cooling sensation agent contains, for example, a cooling sensation component that activates a TRP channel and a solvent component. The cooling sensation component is not particularly limited as long as it activates the TRP channel, and examples thereof include an agonist for the TRPM8 receptor and an agonist for the TRPA1 receptor, and an agonist for the TRPM8 receptor is preferable. This is to prevent the wearer from feeling excessively cold. Examples of the cooling sensation component include menthol (eg: l-menthol) and its derivatives (eg: menthol lactate, mentylglyceryl ether (eg: l-mentylglyceryl ether)), methyl salicylate, camphor, plants (eg: mint, mint, etc.). Eucalyptus) -derived essential oils and the like can be mentioned.

The solvent component is not particularly limited as long as it can contain a warm sensation component and a cool sensation component, and examples thereof include lipophilic solvents and hydrophilic solvents. Such a solvent component can dissolve or disperse a warm feeling component and a cooling feeling component. Examples of the lipophilic solvent include fats and oils. Examples of fats and oils include natural oils (eg, fatty acid esters such as triglycerides, coconut oil, flax oil, etc.), hydrocarbons (eg, paraffin (eg, liquid paraffin)) and the like. Examples of the hydrophilic solvent include water and alcohol. Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol and glycerin, higher alcohols such as capryl alcohol, lauryl alcohol and myristyl alcohol. Among them, as the solvent component, fats and oils (lipophilic solvent) or alcohols (hydrophilic solvent) are preferable from the viewpoint of easy control of volatility and particularly easy reduction of volatility. Further, in the menstrual napkin 1, the solvent component is preferably a lipophilic solvent from the viewpoint of not easily inhibiting the absorbability.

The concentration of the warming component in the warming agent 50 is preferably 1 to 50% by mass, more preferably 3 to 30% by mass, and further preferably 5 to 15% by mass. On the other hand, the concentration of the cooling sensation component in the cooling sensation agent is preferably 5 to 90% by mass, more preferably 10 to 80% by mass, and further preferably 30 to 70% by mass. Both are from the viewpoint of the effect of warmth or coldness. In the sanitary napkin 1, the basis weight of the warming component or the cooling sensation component in the warming agent 50 or the cooling sensation agent is preferably 0.001 to 30 g / m ² , more preferably 0.01 to 20 g. It is / m ² and more preferably 0.1 to 10 g / m ² . This is from the viewpoint of giving a feeling of warmth or coldness to the wearer.

In the menstrual napkin 1, the warming agent or cooling sensation agent is desired as long as it does not impair the effect of imparting a warming sensation or a cooling sensation to the wearer in addition to the above-mentioned warming sensation component, cooling sensation component and solvent component. It can contain at least one other component that has an effect. Such at least one other ingredient includes, for example, agents such as antibacterial agents, skin astringents and anti-inflammatory agents, vitamins, amino acids, zeolites, hyaluronic acid, collagen, petrolatum, trehalose, pH regulators, moisturizers. , Fragrances and the like.

Unlike the heat-generating agent that generates heat, the warming agent for menstrual napkin 1 is less likely to cause low-temperature burns and the adhesive portion 72 and the like are less likely to soften. In addition, the adhesive portion 72 and the like do not easily remain on the underwear and the like, which is preferable.

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 cloth (example: non-woven fabric, woven fabric, knitted fabric), perforated film and the like. Be done. As the cloth, a non-woven 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, spunbond non-woven fabric, point-bond non-woven fabric, spunlace non-woven fabric, needle punch non-woven fabric, melt-blown non-woven fabric, and a combination thereof (example: SMS). 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 fiber include rayon fiber. Examples of the semi-synthetic fiber include semi-synthetic cellulose fiber such as acetate fiber. Examples of synthetic fibers include thermoplastic fibers. Thermoplastic fibers include, for example, polyolefin polymers such as polyethylene and polypropylene, polyester polymers such as polyethylene terephthalate (PET), polybutylene terephthalate and polypentylene terephthalate, and polyamides such as nylon 6 and nylon 6,6. Examples thereof include fibers formed from based polymers, acrylic polymers, polyacrylonitrile-based polymers, modified products thereof, or combinations thereof. Examples of the perforated film include a polyethylene or polypropylene sheet provided with a plurality of perforated portions.

In the sanitary napkin 1, the material of the liquid diffusion sheet 41 is not particularly limited as long as it is a liquid-permeable and liquid-diffusible sheet, and examples thereof include liquid-permeable and hydrophilic non-woven fabrics and laminated non-woven fabrics thereof. Specifically, the materials listed as the material of the liquid permeable sheet 7 can be mentioned. The liquid diffusion sheet 41 preferably has a basis weight of 10 to 200 g / m ² , more preferably 20 to 100 g / m ² . The liquid diffusion sheet 41 preferably has a fiber density of 0.002 g / cm ³ to 0.8 g / cm ³ , more preferably 0.004 g / cm ³ to 0.2 g / cm ³ . At this time, the fiber density of the liquid diffusion sheet 41 is preferably higher than the fiber density of the liquid permeable sheet 7.

In the menstrual napkin 1, the material of the liquid impermeable sheet 9 is not particularly limited as long as it has liquid impermeability. However, it is not a material for the liquid impermeable sheet 9 from the viewpoint of making it difficult for the air warmed by the effect of the warming agent 50 to dissipate from the region between the liquid impermeable sheet 9 and the skin. It is preferable to use one having breathability. Examples of the material of the liquid-impermeable sheet 9 include a synthetic resin film such as polyethylene and polypropylene, a non-woven fabric such as spunbond or spunlace bonded with a synthetic resin film, and a multi-layered non-woven fabric such as SMS. A synthetic resin film having breathability is preferable. 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, the material of the warming agent holding sheet 13 is impregnated with the warming agent 50, for example, those listed as the material of the liquid permeable sheet 7 or a porous resin sheet such as a sponge sheet. Possible ones are listed. Specifically, when the solvent of the warming agent 50 is an oil-based solvent, synthetic fiber fabrics such as non-woven fabrics, woven fabrics, and knitted fabrics are mentioned, and synthetic fiber non-woven fabrics are preferable. When the solvent of the warming agent is a hydrophilic solvent, for example, a cloth composed of cellulosic fibers such as a non-woven fabric, a woven fabric, a knitted fabric and the like can be mentioned, preferably a tissue composed of pulp fibers and an air-laid pulp. Can be mentioned. As another embodiment, when the predetermined function imparted to the sanitary napkin 1 is a heat retaining function, the material of the heat insulating sheet replaced with the heat insulating agent holding sheet 13 is, for example, the warming agent holding sheet 13. In this case, the warming agent 50 is not impregnated.

In the sanitary napkin 1, examples of the material of the absorber 11 (absorption core) include pulp fibers and superabsorbent polymers. When the absorber 11 has a core wrap, the material of the core wrap may be, for example, tissue.

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

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

In the menstrual napkin 1, the warming agent 50 is arranged at a position that does not substantially overlap with the absorber 11 in the thickness direction T, but it can also be arranged at a position that overlaps with the absorber 11 in the thickness direction T. Is. Specifically, in the sanitary napkin 1, the warming agent 50 may be arranged, for example, on the skin-side and / or non-skin-side surface of the liquid-permeable sheet 7, the liquid diffusion sheet 41, and the absorber 11.

The absorbent article of the present invention (exemplification: sanitary napkin) is not limited to the above-described embodiments, and can be combined with each other or publicly known within a range not deviating from the object and purpose of the present invention. It is possible to apply the technology.

1 Menstrual napkin 3 Absorption body 5 Warm body (functional body)
11 Absorber 13 Warming agent holding sheet (functional layer)
17 Wing part 21 Excretion port contact area

Claims (9)

An absorption main body having a longitudinal direction, a width direction, and a thickness direction and including an absorber, and a functional main body located on the front side of the absorption main body in the longitudinal direction and including a functional layer having a predetermined function. It is an absorbent article to be prepared.
In the longitudinal direction, the distance between the center line extending in the width direction through the center of the excretion opening contact area in the absorption body and the front edge of the absorber is the front edge of the absorber. Longer than the distance from the front edge of the absorbent article,
The length of the front region on the front side in the longitudinal direction of the center line of the absorption body is 110 to 300% of the length of the function body .
Absorbent article. The absorption body has a pair of wing portions extending outward on both sides in the width direction.
The center line connects the centers of the pair of wing portions in the width direction in the longitudinal direction.
The absorbent article according to claim 1. The functional body includes a low absorption portion having a lower absorption performance than the absorber.
The absorbent article according to claim 1 or 2. The absorber and the low absorption portion are continuous in the longitudinal direction when viewed from the width direction.
The absorbent article according to claim 3. A part of the absorber and a part of the low absorption portion overlap in the thickness direction.
The absorbent article according to claim 3 or 4. A part of the absorber overlaps the skin side part of the part of the low absorption part.
The absorbent article according to claim 5. A squeezed portion formed by squeezing a part of the absorber and a part of the low-absorbing portion while overlapping them in the thickness direction is further provided.
The absorbent article according to claim 5 or 6. The absorbent article, in the unfolded state,
It has a plurality of folding axes extending along the width direction and parallel to each other at predetermined intervals in the longitudinal direction.
One of the plurality of folding axes is located in the longitudinal direction on the side of the center line from the front edge of the absorber and on the front side of the center line.
The absorbent article according to any one of claims 1 to 7. The basis weight in the longitudinal direction of the absorber is higher than the basis weight in the longitudinal direction of the absorber.
The absorbent article according to any one of claims 1 to 8.

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