WO2016103832A1

WO2016103832A1 - Absorbent article

Info

Publication number: WO2016103832A1
Application number: PCT/JP2015/078014
Authority: WO
Inventors: 俊幸谷尾; 高橋　雄二; 智之藤田
Original assignee: ユニ・チャーム株式会社
Priority date: 2014-12-25
Filing date: 2015-10-02
Publication date: 2016-06-30
Also published as: JP5970533B2; CN107106348B; CN107106348A; JP2016120208A

Abstract

Provided is an absorbent article comprising an absorbent body (10) that absorbs liquid, a top sheet (20) that covers the absorbent body in the thickness direction thereof from the skin side of a wearer, and a back sheet (30) that covers the absorbent body (10) in the thickness direction thereof from the side that is not the skin side of the wearer. The absorbent article is provided with side flaps (50) that extend outward from both side sections of the absorbent body (10) in the width direction thereof. Predetermined regions of the side flaps are coated with a cooling sensation agent. When the side flaps (50) are folded toward the center in the width direction so that the skin-side surface of the top sheet (20) covering the absorbent body (10) faces the skin-side surfaces of the side flaps (50) in the thickness direction, the predetermined regions of the side flaps (50) that are coated with the cooling sensation agent do not overlap in the thickness direction with a central line in the width direction of the absorbent body (10).

Description

Absorbent articles

The present invention relates to an absorbent article.

In an absorbent article such as a sanitary napkin, in order to reduce discomfort due to stuffiness or stickiness during use, a method of applying a substance (for example, a cooling sensation agent) that gives a refreshing feeling to the user is known. It has been. For example, Patent Document 1 discloses an absorbent article in which a cooling sensation agent is disposed in regions on both sides in the width direction of an absorbent body.

JP 2010-234027 A

According to the absorbent article described in Patent Document 1, when the absorbent article is used, the cooling sensation component comes into contact with the user's skin, so that a refreshing feeling can be given to the user.

Such an absorbent article is usually packaged in a small folded state and provided to the user. At that time, the cooling sensation agent may be transferred to the absorber side by being overlapped so that the region where the cooling sensation agent is disposed and the absorber are opposed to each other. When the cooling sensation agent moves to the absorber side, when the user uses (wears) the absorbent article, excessive irritation by the cooling sensation agent acts on sensitive areas of the skin such as the vaginal opening, May cause discomfort.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a foldable absorbent article that is less likely to cause discomfort to the user.

The main invention for achieving the above object is that the absorber that absorbs the liquid, the top sheet that covers the absorber in the thickness direction from the skin side of the user, and the absorber from the non-skin side of the user A back sheet covering in the thickness direction, provided with side flaps extending outward from both lateral sides of the absorbent body, and a predetermined area of the side flap is provided with a cooling sensation agent. Is applied, and the side flaps are arranged in the lateral direction so that the skin-side surface of the top sheet covering the absorber and the skin-side surface of the side flaps face each other in the thickness direction. When folded to the center side, the predetermined region of the side flap where the cooling sensation agent is applied and the lateral center line of the absorber do not overlap in the thickness direction. Absorbent material It is.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

According to the present invention, when an absorbent article is used, it is possible to prevent the user's vaginal opening and the like from being excessively stimulated by a cooling sensation agent, and to make it difficult for the user to feel uncomfortable. it can.

2 is a plan view illustrating the configuration of the sanitary napkin 1. FIG. 1 is a schematic cross-sectional view illustrating a configuration of a sanitary napkin 1. 3A and 3B are diagrams illustrating a method of folding the napkin 1 and individually packaging it. It is a top view of the sanitary napkin 1 of the state which folded the side flap 50 in the horizontal direction inner side. FIG. 5 is a diagram showing a CC cross section of FIG. 4.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
An absorber that absorbs liquid; a top sheet that covers the absorber in the thickness direction from the skin side of the user; and a back sheet that covers the absorber in the thickness direction from the non-skin side of the user. The absorbent article is provided with side flaps extending outward from both lateral sides of the absorbent body, and a cooling agent is applied to a predetermined region of the side flap, covering the absorbent body. When the side flaps are folded toward the center in the lateral direction so that the skin side surface of the top sheet and the skin side surface of the side flaps face each other in the thickness direction, the side flaps The said predetermined area | region where the said cooling sensation agent was apply | coated, and the said horizontal center line of the said absorber do not overlap in the said thickness direction, The absorbent article characterized by the above-mentioned.

According to such an absorbent article, when the side flap is folded, the component of the cooling sensation agent provided on the side flap is difficult to transfer to the region including the center line of the absorber. Thereby, at the time of use (at the time of wearing) of an absorptive article, it can control that an excessive stimulus by a cooling sensation agent acts on a user's skin, and makes it difficult to give a user discomfort.

In such an absorbent article, the absorbent body is formed with a pair of hinge portions extending in the vertical direction, and when the side flaps are folded toward the center in the lateral direction, It is desirable that the predetermined area where the cooling sensation agent is applied and an area in contact with the user's vaginal opening among areas sandwiched between the pair of hinge portions do not overlap in the thickness direction. .

According to such an absorbent article, when the side flaps are folded, the components of the cooling sensation agent provided on the side flaps are not easily transferred to the region where the absorbent user contacts the vaginal opening. As a result, when the absorbent article is used (at the time of wearing), the excessive stimulation by the cooling sensation agent on the sensitive area of the skin, such as the vaginal opening, is suppressed, which makes the user more uncomfortable. Can be difficult.

In this absorbent article, it is desirable that the cooling sensation agent is a particle, and at least a part of the cooling sensation agent is bonded to the side flap by an adhesive.

According to such an absorbent article, since the particles of the cooling sensation agent are firmly bonded to the side flaps by the adhesive, the cooling sensation agent is detached from the side flaps when the absorbent article is used, It is suppressed that it moves and adheres to an unexpected part. Thereby, it is suppressed that an unexpected irritation | stimulation is given to a user's skin, and it becomes difficult to give a user a discomfort.

In such an absorbent article, the side flap is configured by laminating a first sheet member and a second sheet member in the thickness direction,
The cooling sensation agent is preferably provided between the stacked first sheet member and second sheet member.

According to such an absorbent article, since direct contact between the cooling sensation agent and the user's skin is suppressed, it is difficult to give excessive irritation to the user's skin. In addition, since the cooling sensation agent is held between the first sheet member and the second sheet member, the possibility that the cooling sensation agent leaks to the outside of the sheet member is low, and is directly on the user's skin. The possibility of contact can also be reduced. Thereby, it can be made hard to give a user discomfort.

In such an absorbent article, the first sheet member is a member disposed on the skin side, and the second sheet member is a member disposed on the non-skin side,
It is desirable that at least a part of the cooling sensation agent is bonded to the non-skin side surface of the first sheet member with an adhesive.

According to such an absorbent article, it is possible to prevent the cooling sensation agent from coming into direct contact with the user's skin, and to dispose the cooling sensation agent at a position closer to the user's skin. Thereby, a moderate refreshing feeling can be given to a user.

In such an absorbent article, the first sheet member is a nonwoven fabric,
It is desirable that the fiber density on the non-skin side surface of the first sheet member is higher than the fiber density on the skin side surface of the first sheet member.

According to such an absorbent article, since the cooling sensation agent is disposed on the surface of the first sheet member having a high density of fibers, the cooling sensation agent passes through the gaps between the fibers of the nonwoven fabric, and the Since the movement to the skin side of the sheet member 1 is suppressed and the possibility that the cooling sensation agent comes into contact with the user's skin can be reduced, it is possible to make the user less likely to feel discomfort.

In this absorbent article, when the side flap is folded to the center side in the lateral direction along a fold line extending in the longitudinal direction, the predetermined region where the cooling sensation agent is applied to the side flap. It is desirable that the fold line does not overlap in the thickness direction.

According to such an absorbent article, the influence of stress or the like generated during bending hardly acts on the particles of the cooling sensation agent. Therefore, local change in the quality of the cooling sensation agent particles is suppressed, and the cooling sensation agent is easily kept in a homogeneous state.

In such an absorbent article, when the side flaps are folded toward the center in the lateral direction, all areas where the cooling sensation agent is applied with the side flaps are in the thickness direction of the backsheet. It is desirable to be disposed between.

According to such an absorbent article, since the cooling sensation agent is sandwiched between the back sheets in the thickness direction, problems such as leakage of the cooling sensation agent particles to the outside of the napkin 1 are less likely to occur. .

In such an absorbent article, a region where the top sheet is folded in the thickness direction is formed at both ends of the absorbent body in the lateral direction, and the side flaps are arranged in the lateral center side. When the folding sheet is folded, at least a part of the predetermined area where the cooling sensation agent is applied with the side flaps is an area where the top sheet is folded in the thickness direction and the thickness direction. It is desirable that they overlap each other.

According to such an absorbent article, since the thickness in the thickness direction is higher in the region where the top sheet is folded than in other regions, the top sheet is folded when the side flaps are folded. It becomes easy for the cooling sensation agent to come into contact with the formed area. Therefore, the component of the cooling sensation is preferentially transferred to the folded region, and the other region (that is, the region sandwiched between the pair of hinge portions by the absorber) has the cooling sensation agent. It becomes difficult to transfer. Thereby, it can be made hard to give a user discomfort.

=== Embodiment ===
<Configuration of sanitary napkin>
A sanitary napkin 1 will be described as an example of an absorbent article according to the present embodiment. In the following description, a sanitary napkin will be described as an example of the absorbent article. However, the absorbent article of the present embodiment also includes a so-called cage sheet (for example, a panty liner) and the like. It is not limited.

FIG. 1 is a plan view illustrating the configuration of the sanitary napkin 1. FIG. 2 is a schematic cross-sectional view illustrating the configuration of the sanitary napkin 1. In the following description, each direction is defined as shown in FIGS. That is, the direction along the product longitudinal direction of the sanitary napkin 1 is defined as “vertical direction”. The vertical direction has a “front side” and a “rear side”. The “front side” is a direction that becomes the ventral side of the user when the sanitary napkin 1 is used, and the “rear side” is a direction that becomes the back side of the user when the sanitary napkin 1 is used. In addition, a direction orthogonal to the vertical direction, that is, a direction along the product width direction is referred to as a “lateral direction”. The direction perpendicular to the vertical direction and the horizontal direction is the “thickness direction”, and the side that contacts the wearer's skin (the upper side in FIG. 2) when wearing the sanitary napkin 1 is the “skin side” and the opposite side ( The lower side in FIG. 2 is defined as “non-skin side”.

The sanitary napkin 1 (hereinafter also simply referred to as “napkin 1”) includes an absorbent body 10 that absorbs liquid, a top sheet 20 that covers the absorbent body 10 in the thickness direction from the user's skin side, It has the back sheet 30 which covers the absorber 10 from the skin side to the thickness direction, and the side flap 50 provided in the horizontal direction outer side of the absorber 10. FIG. Moreover, the hinge part 110 and the hole part 120 are formed in the skin side surface of the napkin 1.

The absorbent body 10 is a long and long member along the longitudinal direction, and includes hydrophilic fibers, pulp, and the like, and can efficiently absorb and retain fluids such as body fluids and blood drainage. The absorbent body 10 may be formed by laminating hydrophilic fibers or powders by the airlaid method, or may be an airlaid sheet obtained by forming hydrophilic fibers or powders into a sheet shape by the airlaid method.

The top sheet 20 is a liquid-permeable sheet member that allows liquid such as body fluid to pass therethrough, and is formed of, for example, a nonwoven fabric. However, a member other than a non-woven fabric may be used as long as it is a sheet member having a structure that allows liquid to pass through and is a safe member when contacting the user's skin when the napkin 1 is used. For example, a woven fabric or a mesh sheet may be used. The top sheet 20 is larger than the absorbent body 10 in the vertical direction and the horizontal direction, and can cover the entire region of the absorbent body 10. Further, a second sheet 25 is provided between the top sheet 20 and the absorbent body 10 in the thickness direction. The second sheet 25 is configured by a member equivalent to the top sheet 20.

A part of the top sheet 20 extends to the outside in the lateral direction of the absorbent body 10 to form a side flap 50 described later. Further, as shown in FIG. 2, the top sheet 20 is once folded inward in the lateral direction in the Ω folding region 20 fr overlapping in the thickness direction with the regions at both ends in the lateral direction of the absorbent body 10, and then again in the lateral direction. It is folded outward and extends outward in the lateral direction. That is, the top sheet 20 is folded in the thickness direction in the Ω folding region 20fr. In addition, after the Ω folding region 20fr is formed, the folded top sheets 20 are joined in the thickness direction by embossing the portion in the thickness direction. As described above, when the top sheet 20 is folded, the thickness in the thickness direction of the Ω folded region 20fr becomes thicker than the thickness of other regions (regions other than the Ω folded region 20fr of the top sheet 20). Yes.

The back sheet 30 is a non-liquid permeable sheet member. For example, a breathable resin film is bonded to a non-woven fabric such as a film mainly composed of polyethylene or propylene, a breathable resin film, spunbond, or spunlace. Formed by a sheet. Since the back sheet 30 is non-liquid permeable, the liquid that permeates the top sheet 20 and is absorbed by the absorber 10 when the napkin 1 is used may ooze out to the clothing side (non-skin side) such as underwear. It is suppressed. It is desirable that the back sheet 30 has substantially the same shape as the top sheet 20 and has such flexibility that the user does not feel uncomfortable when using the napkin 1.

A part of the back sheet 30 extends to the outside in the lateral direction of the absorbent body 10 similarly to the top sheet 20 to form a side flap 50 described later. In addition, an adhesive surface 31 </ b> A to which an adhesive such as a hot melt adhesive (hereinafter also referred to as HMA) is applied is formed at the center in the lateral direction of the non-skin side surface of the backsheet 30. Similarly, adhesive surfaces 31B are formed on both lateral sides of the adhesive surface 31A (the non-skin side surface of the side flap 50) (see FIG. 2). The adhesive surfaces 31 </ b> A and 31 </ b> B are formed so that the napkin 1 is attached to the user's underwear when the napkin 1 is used so that the position does not shift. When the napkin 1 is not used, the

adhesive surfaces

31A and 31B are covered with a packaging sheet 60 described later and a protective sheet (not shown). In the state covered with such a protective sheet, the adhesiveness of the

adhesive surfaces

31A and 31B is not expressed.

The side flaps 50 are formed by laminating the top sheet 20 and the back sheet 30 extending outward from both lateral sides of the absorbent body 10 in the thickness direction and bonding them together (see FIG. 2). However, the side flaps 50 may be formed of another member different from the top sheet 20 and the back sheet 30. For example, the side flap 50 may be configured by laminating a first sheet member different from the top sheet 20 and a second sheet member different from the back sheet 30. Further, a reinforcing sheet 55 for reinforcing the strength of the side flap 50 is provided between the top sheet 20 and the back sheet 30 in the thickness direction.

The side flap 50 can be folded inward in the lateral direction with a fold line 50f extending in the vertical direction at the lateral outer end of the Ω folding region 20fr as a base point. When packaging the napkins 1 individually, the napkins 1 can be compactly packaged by folding the side flaps 50 along the folding line 50f. The individual packaging of the napkin 1 will be described later with reference to FIG.

As shown in FIG. 1, the side flap 50 of the present embodiment includes a wing portion 51 extending outward in the lateral direction from a vaginal opening contact region provided closer to the front side than the longitudinal center of the absorber 10. , And a hip flap portion 52 extending outward in the lateral direction from the region in the longitudinal rear side of the vaginal opening contact region. The “vagina opening contact area” is an area that comes into contact with the user's vaginal opening when the napkin 1 is used (when worn).

The wing 51 is bent to the non-skin side along the fold line 50f when the napkin 1 is used, and the adhesive surface 31B is attached to the user's underwear, so that the napkin 1 is displaced in the crotch portion of the user. Make it difficult to occur.

The hip flap 52 is provided to extend laterally outward on the longitudinal rear side (back side) of the napkin 1, and when used in a state where the napkin 1 is deployed laterally as shown in FIG. The user's buttocks can be covered widely. For example, even when blood drainage or the like wraps around the buttocks side while the user is lying on his / her back, the hip flap portion 52 covers the buttocks over a wide range, so that blood drainage or the like is not performed on the napkin 1. Prevents the user's underwear from getting dirty.

The hinge part 110 is a linear part formed by extending in the longitudinal direction of the absorbent body 10, and the absorbent body 10 is bent in the lateral direction along the hinge part 110. When using (wearing) the napkin 1, a force that causes the absorbent body 10 to contract in the lateral direction is applied. At this time, the absorbent body 10 is bent with the hinge portion 110 as a base point, thereby absorbing the absorbent body 10. Are prevented from being irregularly deformed or generating unwanted wrinkles on the surface. That is, the hinge part 110 functions as a bending guide part of the absorber 10. Thereby, it becomes easy for the absorber 10 to maintain favorable liquid absorptivity. The hinge part 110 of this embodiment is formed in a curved shape by arranging a plurality of compressed grooves formed by embossing or the like on the skin side surface of the absorbent body 10 (and the top sheet 20). In addition, although the said pressing groove is not illustrated in sectional drawing of FIG. 2, the embossing is actually given to the thickness direction of an absorber. A pair of such curved hinge portions 110 are formed symmetrically with respect to the horizontal center line of the absorbent body 10.

The pair of hinge portions 110 are arranged so as to have a predetermined interval in the lateral direction. When the napkin 1 is used, a laterally inner force acts on the absorbent body 10 so that the region sandwiched between the pair of hinge portions 110 is deformed so as to be convex toward the skin side. Therefore, it is possible to efficiently absorb liquid such as blood drainage and to give a good fit to the user. In particular, in the vaginal opening contact region, the distance between the pair of hinge portions 110 is wide in the vicinity of the central portion in the vertical direction (see FIG. 1), and the structure easily absorbs fluid such as blood drainage.

Further, a plurality of hole portions 120 are formed in a region sandwiched between the pair of hinge portions 110. The hole 120 is a hole that penetrates the top sheet 20 and the absorbent body 10 in the thickness direction, and by forming a plurality of the hole parts 120, the rigidity of the absorbent body 10 is partially increased, so Shaking is suppressed. That is, in the region where the hole 120 is formed, the absorber 10 is easily maintained in a planar shape as compared with the region where the hole 120 is not formed. Further, the provision of the hole portion 120 increases the air permeability when using the napkin 1 and has an effect of making it difficult to cause stuffiness. In the present embodiment, even when an external force is applied to the absorbent body 10 when the napkin 1 is used, the region sandwiched between the pair of hinge portions 110 maintains the planar shape and is deformed as described above. The arrangement and quantity of the holes 120 are determined so that (deformation that protrudes toward the skin side) is possible.

<Cool sensation area>
In the napkin 1 of the present embodiment, a cooling sensation region CR in which a cooling sensation agent is applied to a predetermined region of the side flap 50 is formed. The “cooling sensation agent” is a particle having a multiple capsule structure in which a cooling agent such as menthol or camphor is used as a core and the periphery thereof is covered with a water-soluble substance such as starch. In normal times, the cooling agent that is the core of the cooling sensation agent is not exposed to the outside. When a predetermined amount of moisture (for example, user's sweat or water vapor) comes into contact with the cooling sensation agent, the water-soluble substance dissolves and the internal cooling agent is released to the outside, which can give the user a refreshing feeling. . By making the cooling sensation agent into particles having such a multiple capsule structure, a refreshing sensation can be efficiently given to the user when the napkin 1 is stuffy due to sweat. In particular, since the napkin 1 has a large area of the hip flap 52, the user's buttocks can be covered widely. It tends to occur. Even in such a case, by providing the cool feeling region CR in the hip flap portion 52, it is possible to give the user a refreshing feeling and to reduce discomfort caused by stuffiness.

The cooling agent particles may have a structure in which the cooling agent is covered with a porous material capable of adsorbing molecules in a large number of pores. For example, the refreshing agent may be supported by a porous material such as silica gel or zeolite and replaced with water vapor or the like under predetermined conditions to release the refreshing agent to the outside of the porous material.

As shown by the shaded portion in FIG. 1, the cooling sensation region CR is a belt-like shape extending in the vertical direction while having a predetermined width in the horizontal direction in a region laterally outside the folding line 50 f of the side flap 50. It is formed as a region. As shown in FIG. 2, the cooling sensation region CR is formed on the non-skin side surface of the top sheet 20. That is, in this embodiment, the cooling sensation agent is provided between the top sheet 20 and the back sheet 30 stacked in the side flap 50. Thereby, since direct contact with a cooling sensation agent and a user's skin is suppressed, it becomes difficult to give an excessive irritation | stimulation to a user. Further, as described above, since the cooling sensation agent of the present embodiment is a solid particle, if the cooling area CR is provided on the skin side surface of the top sheet 20, the cooling sensation when the napkin 1 is used. When the agent particles are detached from the cooling sensation region CR, the cooling sensation agent particles may move and adhere to the vaginal opening contact region or the like, which may cause discomfort to the user. On the other hand, if the cooling sensation region CR is provided between the top sheet 20 and the back sheet 30, even if the cooling sensation agent particles are detached from the cooling sensation region CR, the separated cooling sensation agent particles are the top. Since it is easy to be held between the sheet 20 and the back sheet 30 and the possibility that the cooling sensation agent is in direct contact with the skin of the user is low, it is difficult for the user to feel discomfort.

In order to form the cooling sensation region CR, before joining the top sheet 20 and the back sheet 30, first, a predetermined region on the non-skin side surface of the top sheet 20 (region indicated by the shaded portion in FIG. 1). An adhesive such as hot melt adhesive (HMA) is applied in a strip shape. The adhesive is applied, for example, from the coater coating device provided on the production line to the HMA while the base sheet of the top sheet 20 is conveyed along the vertical direction (MD direction) in the manufacturing process of the napkin 1. Is performed by coating. At this time, HMA is applied to the entire area indicated by the shaded portion in FIG. Subsequently, the particles of the cooling sensation agent are applied to the area where the HMA is applied. The application of the cooling sensation agent is performed by, for example, spraying particles of the cooling sensation agent on the region where the HMA is applied from the vertically upper side of the base sheet of the top sheet 20 conveyed in the MD direction. Thereby, the particles of the cooling sensation agent are firmly bonded to the side flap 50 (top sheet 20) by the adhesive (such as HMA), and the cooling sensation agent is detached from the cooling sensation region CR when the napkin 1 is used. It can suppress that a cooling agent adheres to the unexpected location of the napkin 1.

In addition, although the nonwoven fabric used as a material of the top sheet 20 is configured by entwining a plurality of fibers, generally the density of the nonwoven fabric is not uniform as a whole nonwoven fabric, and a gradient of density in the thickness direction is produced in the process of manufacturing the nonwoven fabric. Arise. In this embodiment, the nonwoven fabric is arrange | positioned and the top sheet 20 is formed so that the density of the non-skin side may become higher than the skin side of the thickness direction. That is, the density of the top sheet 20 is higher on the non-skin side surface than on the skin side surface in the thickness direction. Thereby, the particle | grains of the cooling agent arrange | positioned on the non-skin side surface with high fiber density by the top sheet 20 pass through the clearance gap between the fibers of a nonwoven fabric, and move to the skin side from the non-skin side of a thickness direction. The cooling feeling region CR can be stably formed.

Subsequently, the top sheet 20 and the back sheet 30 are joined in the thickness direction. At that time, if an adhesive is also applied to the skin side surface of the back sheet 30 (the surface facing the top sheet 20), the particles of the cooling sensation agent are made stronger in the cooling sensation region CR of the side flap 50. The top sheet 20 and the back sheet 30 can be joined more firmly. In addition, after the top sheet 20 and the back sheet 30 are joined in the thickness direction, the peripheral edge of the side flap 50 is subjected to a sealing process. This makes it difficult for the joint between the top sheet 20 and the back sheet 30 to be peeled off, and makes it easier to prevent the particles of the cooling sensation agent disposed between the top sheet 20 and the back sheet 30 from leaking outside the side flap 50.

<About folding the napkin 1>
3A and 3B are diagrams illustrating a method of folding the napkin 1 and individually packaging it. A packaging sheet 60 is used for individual packaging of the napkin 1. The packaging sheet 60 is a sheet-shaped packaging member for individually packaging the napkins 1 and is a member that is removed when the napkin 1 is used. As a material of the packaging sheet 60, for example, various films such as a plastic film and a nylon film, a nonwoven fabric, a film obtained by laminating a nonwoven fabric, and the like are used.

When packaging the napkin 1, first, the packaging sheet 60 is attached to the adhesive surface 31A formed on the non-skin side surface of the back sheet 30 of the unfolded napkin 1 (that is, the napkin 1 in the state of FIG. 1). . Then, as shown in FIG. 3A, the side flaps 50 are folded inward in the lateral direction along the folding line 50f. By folding the side flap 50, the skin side surface of the wing part 51 and the hip flap part 52 and the skin side surface of the top sheet 20 face each other in the thickness direction skin side region of the absorbent body 10. Subsequently, the napkin 1 and the packaging sheet 60 are integrally folded in the vertical direction. In the present embodiment, the napkin 1 (and the packaging sheet 60) is tri-folded in the vertical direction at the first fold line F1 and the second fold line F2 set at predetermined positions in the vertical direction. First, the napkin 1 is folded in the vertical direction so that the skin side surface is on the inner side at the first fold line F1. Next, at the second fold line F2, the napkin 1 is folded in the vertical direction so that the skin-side surface is inward. Thereafter, both end portions of the packaging sheet 60 in the horizontal direction are joined along the vertical direction using a known sealing means such as ultrasonic welding or heat welding. Finally, the fixing tape 61 is affixed to the central portion of the packaging sheet 60 in the lateral direction. The fixing tape 61 is affixed to the outer surface of the packaging sheet 60 so as to be peeled off. As a result, the packaging sheet 60 may be peeled off before the napkin 1 is used, or the package of the napkin 1 may be unfolded. It is suppressed. In this manner, a compact package as shown in FIG. 3B is formed.

When the user uses the napkin 1, the folded napkin 1 is unfolded according to the reverse procedure. Then, the packaging sheet 60 is peeled off from the napkin 1 and the exposed adhesive surface 31A is affixed to the underwear so that the napkin 1 is worn so as not to be displaced.

By the way, when the napkin 1 is individually packaged, the side flaps 50 are folded inward in the lateral direction (see FIG. 3A), so that the cooling sensation region CR formed on the side flaps 50 and the skin side of the absorbent body 10 A part of the surface overlaps in the thickness direction. And in the said overlapping part, the component of the cooling sensation agent of the cooling sensation area | region CR may transfer to the absorber 10 side, and may adhere to the skin side surface of the absorber 10 (top sheet 20). If the component of the cooling sensation agent adheres to the absorbent body 10, the cooling sensation agent directly acts on the skin of the user in contact with the absorbent body, which may cause a strong irritation to the user. On the other hand, in the napkin 1 of the present embodiment, the overlap in the thickness direction between the cooling sensation region CR and the absorber 10 is limited to a predetermined region, thereby making it difficult for the user to feel uncomfortable. Hereinafter, this point will be described.

FIG. 4 is a plan view of the sanitary napkin 1 with the side flaps 50 folded inward in the lateral direction. FIG. 5 is a diagram showing a CC cross section of FIG. In FIG. 4, in order to explain the positional relationship between the cooling region CR of the folded side flap 50 and the hinge portion 110 or the hole portion 120, the hinge of the portion that is actually hidden behind the side flap 50 and cannot be seen. The part 110 and the hole part 120 are also indicated by solid lines.

As shown in FIGS. 4 and 5, the cooling sensation region CR (the shaded portion in FIG. 4) is disposed on both lateral sides of the absorbent body 10 with the side flaps 50 folded inward in the lateral direction. become. Specifically, the cooling sensation region CR is disposed at a position that does not overlap in the thickness direction with the central region including the horizontal center line of the absorbent body 10. In particular, in the vaginal opening contact region, the cooling sensation region CR is disposed at a position that does not overlap with the region sandwiched between the pair of hinge portions 110 by the absorber 10 in the thickness direction. As described above, the region sandwiched between the pair of hinge portions 110 (the central region in the lateral direction of the absorbent body 10) is a region that comes into contact with the user's skin when the napkin 1 is used. Therefore, the component of the cooling sensation region CR is sandwiched between the pair of hinge portions 110 of the absorbent body 10 so that the region and the cooling sensation region CR do not overlap in the thickness direction. Transition to the region can be suppressed. This makes it difficult for the user to feel uncomfortable. In particular, since the vaginal opening contact area shown in FIG. 4 is a part that directly contacts the user's vaginal opening, the vaginal opening contact area of the area sandwiched between the pair of hinge portions 110, and the cold By preventing the sensitive area CR from overlapping in the thickness direction, it is possible to suppress the stimulation by the cooling sensation agent from acting on the vaginal opening of the user.

In the region on the rear side in the vertical direction of the napkin 1, the cooling sensation region CR disposed in the folded hip flap portion 52 partially overlaps the region sandwiched between the pair of hinge portions 110. . However, since this area is an area that comes into contact with the user's buttocks when the napkin 1 is used, the user feels uncomfortable even when stimulation by the cooling sensation agent is applied, compared to the vaginal opening contact area. Hateful. On the other hand, on the buttock side, since a wide area is covered by the hip flap part 52, it is easy to generate stuffiness. Therefore, even if the component of the cooling sensation agent is transferred to a partial area on the absorber side, it is used. It is easy to give a refreshing feeling, not discomfort to the person. Therefore, even if the cooling sensation region CR of the hip flap portion 52 overlaps with a part of the region sandwiched between the pair of hinge portions 110 in the region on the rear side in the vertical direction of the napkin 1, a problem hardly occurs.

Further, the cooling sensation region CR is formed so as not to overlap with a fold line 50f that is a base point for folding the side flap 50 (see FIG. 4). That is, when the side flap 50 is folded inward in the lateral direction, the cooling sensation region CR itself is not folded. In the present embodiment, the cooling sensation region CR is formed by joining a particulate cooling sensation agent to a predetermined region of the top sheet 20 with an adhesive. If the cooling sensation region CR overlaps with the folding line 50f, the quality of the cooling sensation agent particles may change in the overlapping portion due to the influence of stress or the like generated during bending. For example, when the bending stress acts, the refreshing agent, which is the core of the cooling sensation agent, is exposed to the outside and volatilizes, and in this part, a refreshing feeling can be given to the user when using the napkin 1. It may be impossible to do so. On the other hand, in the cooling sensation region CR of the present embodiment, stress or the like due to bending does not act, so that the cooling sensation agent is easily maintained in a uniform state for the entire region of the cooling sensation region CR.

Further, when the napkin 1 is used, the wing portion 51 is folded back to the non-skin side along the fold line 50f, and the fold line 50f is displayed in the region where the wing portion 51 is formed (that is, the vaginal opening contact region). It will be in the state contact | abutted with the groin part (near the hook of a leg part). At this time, when the cooling sensation region CR overlaps with the fold line 50f, the user's groin is stimulated by the chilling agent along the fold line 50f, causing discomfort to the user. There is. However, in this embodiment, since the folding line 50f and the cooling sensation region CR do not overlap in the thickness direction even in the region where the wing portion 51 is formed, such discomfort in the inguinal portion is caused to the user. It is hard to let you.

Further, as shown in FIGS. 4 and 5, in the state where the side flap 50 is folded inward in the lateral direction, the cooling sensation region CR is sandwiched at least by the back sheet 30 in the thickness direction. In other words, all the portions of the cooling sensation region CR where the cooling sensation agent is applied are in a state of being disposed between the thickness directions of the back sheet 30. Since the back sheet 30 is composed of a resin film or the like, even if the particles of the cooling sensation agent are detached from the cooling sensation region CR with the side flaps 50 folded, the cooling sensation agent particles pass through the back sheet 30. Thus, problems such as leakage to the outside of the napkin 1 are unlikely to occur. Furthermore, in this embodiment, since the reinforcing sheet 55 is provided between the cooling sensation region CR and the back sheet 30, it is easier to suppress leakage of cooling sensation agent particles to the outside.

Further, as shown in FIG. 5, in a state where the side flap 50 is folded inward in the lateral direction, at least a part of the cooling sensation region CR overlaps with the Ω folding region 20fr in the thickness direction. As described above, since the Ω folded region 20fr is formed by folding the top sheet 20 in the thickness direction, the Ω folded region 20fr has a thickness in the thickness direction as compared with other regions of the top sheet 20. The height is high (thick). Therefore, when the side flap 50 is folded, the cooling sensation region CR is first in a positional relationship facing the Ω folding region 20fr. Accordingly, even if the transfer of the component of the cooling sensation from the cooling sensation region CR to the absorber 10 occurs, the component of the cooling sensation agent tends to preferentially transfer to the Ω folding region 20fr. By causing the transfer of the cooling sensation preferentially in the regions at both ends of the absorbent body 10 in the lateral direction, the cooling sensation agent is difficult to transfer to the region sandwiched between the pair of hinge portions 110 of the absorber 10. Become. Thereby, at the time of use of the napkin 1, it can be made hard to give a user a discomfort.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

<About the formation of the cool feeling area>
In the embodiment described above, when forming the cooling sensation region, first, an adhesive such as HMA is applied to a predetermined region on the non-skin side surface of the top sheet 20, and the region to which the adhesive is applied is cooled. Although the method for adhering the sensitizer particles has been described, the method for forming the cooling sensation region is not limited to this. For example, the cooling sensation region may be formed by directly applying a liquid of the cooling sensation agent to a predetermined region on the non-skin side surface of the top sheet 20 using a liquid cooling sensation agent instead of particles. . Alternatively, a method may be used in which a cooling sensation agent is attached in advance to a thin film sheet member, and the sheet member to which the cooling sensation agent is attached is attached to a predetermined region on the non-skin side surface of the top sheet 20. .

<How to fold sanitary napkin 1>
In the above-described embodiment, the example in which the sanitary napkin 1 is folded in the vertical direction using a plurality of folds (F1 and F2 in FIG. 3A) along the horizontal direction as a base point has been described. This is not the case. For example, the sanitary napkin 1 may be folded in the horizontal direction with a fold along the vertical direction as a base point, or may be folded in both the vertical direction and the horizontal direction.

<About Hinge 110>
In the above-described embodiment, the pair of hinge portions 110 disposed mainly in the vaginal opening contact area has been described, but the hinge portions 110 are substantially in the vertical direction of the absorbent body 10 as shown in FIG. It is formed over the entire area. Moreover, in the above-mentioned embodiment, although the hinge part 110 was formed when the some pressing groove was located in a line, it may be formed as one line (curve) which the whole connected.

<About hole 120>
In the above-described embodiment, the plurality of hole portions 120 are formed in the region sandwiched between the pair of hinge portions 110. However, the hole portion 120 is formed in the region sandwiched between the pair of hinge portions 110. A region that is formed and a region that is not formed may be provided. In the region where the hole 120 is not formed, the rigidity of the absorber 10 is lower than that in the region where the hole 120 is formed. Therefore, the rigidity of the absorber 10 can be increased by changing the arrangement and number of the holes 120. Can be partially adjusted. For example, if the hole 120 is not provided in the region of the laterally central portion on the rear side in the longitudinal direction of the absorbent body 10, the rigidity of the region is reduced, and the fit feeling at the buttocks of the absorbent body 10 can be increased. it can.

1 sanitary napkins (napkins),
10 Absorber,
20 top sheet, 20 fr Ω folding region,
25 second seat,
30 back sheet, 31A adhesive surface, 31B adhesive surface,
50 side flaps, 50f fold line,
51 wing, 52 hip flap,
55 Reinforcement sheet,
60 packaging sheet, 61 fixing tape,
110 hinge part,
120 holes,
CR cold area,
F1 first fold, F2 second fold

Claims

An absorber that absorbs liquid; a top sheet that covers the absorber in the thickness direction from the skin side of the user; and a back sheet that covers the absorber in the thickness direction from the non-skin side of the user. An absorbent article,
Side flaps extending outward from both lateral sides of the absorber are provided, and a cooling agent is applied to a predetermined region of the side flaps,
When the side flaps are folded toward the center in the lateral direction so that the skin side surface of the top sheet covering the absorbent body and the skin side surface of the side flaps face each other in the thickness direction In addition,
The absorbent article, wherein the predetermined region of the side flap to which the cooling sensation agent is applied and the lateral center line of the absorber do not overlap in the thickness direction.
The absorbent article according to claim 1,
The absorber is formed with a pair of hinge portions extending in the vertical direction,
When the side flaps are folded toward the lateral center,
The predetermined region of the side flap to which the cooling sensation agent is applied does not overlap in the thickness direction with the region that is in contact with the user's vaginal opening among the regions sandwiched between the pair of hinge portions. An absorbent article characterized by that.
The absorbent article according to claim 1 or 2,
The cooling agent is a particle,
At least one part of the said cooling sensation agent is joined to the said side flap with the adhesive agent, The absorbent article characterized by the above-mentioned.
The absorbent article according to any one of claims 1 to 3,
The side flap is configured by laminating a first sheet member and a second sheet member in the thickness direction,
The said cooling sensation agent is provided between the said 1st sheet member and the said 2nd sheet member which were laminated | stacked, The absorbent article characterized by the above-mentioned.
The absorbent article according to claim 4,
The first sheet member is a member disposed on the skin side, and the second sheet member is a member disposed on the non-skin side,
At least a part of the cooling sensation agent is bonded to the non-skin-side surface of the first sheet member with an adhesive.
The absorbent article according to claim 5,
The first sheet member is a nonwoven fabric,
The absorbent article, wherein a density of fibers on the non-skin side surface of the first sheet member is higher than a density of fibers on the skin side surface of the first sheet member.
The absorbent article according to any one of claims 1 to 6,
When the side flaps are folded along the fold line extending in the longitudinal direction toward the center in the lateral direction,
The absorbent article, wherein the predetermined region where the cooling sensation agent is applied by the side flaps and the folding line do not overlap in the thickness direction.
An absorbent article according to any one of claims 1 to 7,
When the side flaps are folded toward the lateral center,
All the area | regions where the said cooling sensation agent was apply | coated by the said side flap are arrange | positioned between the said thickness directions of the said back sheet, The absorbent article characterized by the above-mentioned.
An absorbent article according to any one of claims 1 to 8,
A region where the top sheet is folded in the thickness direction is formed at both ends of the absorbent body in the lateral direction,
When the side flaps are folded toward the lateral center,
At least a part of the predetermined area where the cooling sensation agent is applied by the side flaps overlaps with an area where the top sheet is folded in the thickness direction in the thickness direction. Absorbent article.