CN113855396A - Pants-type absorbent article - Google Patents

Abstract

The invention provides a pants-type absorbent article which can make a wearer feel appropriate stimulation. A pants-type absorbent article (1) having an absorbent body (20) and a waist member (10) disposed so as to overlap the non-skin side of the absorbent body (20), wherein temperature-sensitive agents or cold-sensitive agents (26, 27) are provided on the absorbent body (20) and the waist member (10), and the strength of the temperature-sensitive agent or the cold-sensitive agent (27) of the absorbent body (20) is different from the strength of the temperature-sensitive agent or the cold-sensitive agent (26) of the waist member (10) when the wearer wears the pants-type absorbent article (1).

Description

Pants-type absorbent article

Technical Field

The present invention relates to a pants-type absorbent article.

Background

Pants-type absorbent articles (hereinafter, also simply referred to as absorbent articles) provided with a substance that causes a wearer to feel irritation when worn, such as a fragrance, a temperature-sensitive agent, and a cooling-sensitive agent, are known. For example, patent document 1 discloses the following technique: by providing the perfume on the outer surface or the inner surface of the waist region 10 corresponding to the waist circumference of the wearer, unpleasant odor derived from excrement is reduced.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-102612

Disclosure of Invention

Problems to be solved by the invention

However, it is sometimes difficult for the wearer to feel appropriate stimulation when wearing a pants-type absorbent article. For example, in the body of the wearer, a portion with a large amount of fat (for example, the waist) and a portion with a small amount of fat (for example, the periphery of the vaginal opening) have different sensations from a warming agent and the like, and thus there is a possibility that the stimulation is too weak at a portion with a large amount of fat and too strong at a portion with a small amount of fat. Further, the sensation of stimulation may vary depending on the posture of the wearer. For example, in a case where the wearer lies on his back and a case where the wearer lies on his stomach, since the feeling of stimulation differs between the waist portion and the crotch portion depending on the way of applying the body pressure, it is difficult to cause the wearer to feel appropriate stimulation in such a case.

The present invention has been made in view of the above-described problems, and an object thereof is to provide a pants-type absorbent article that can provide a wearer with a proper stimulus.

Means for solving the problems

A main invention for achieving the above object is a pants-type absorbent article having a vertical direction and a horizontal direction intersecting with each other, the pants-type absorbent article comprising: a liquid-absorbent main body; and a waist member disposed so as to overlap a non-skin side of the absorbent body, wherein a temperature sensitive agent or a cooling agent is provided in the absorbent body and the waist member, and a strength of the temperature sensitive agent or the cooling agent in the absorbent body is different from a strength of the temperature sensitive agent or the cooling agent in the waist member when the wearer wears the pants-type absorbent article.

Other features of the present invention will be apparent from the description of the present specification and the accompanying drawings.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a pants-type absorbent article can be provided that can provide a wearer with a proper stimulus.

Drawings

Fig. 1 is a schematic perspective view of a pants-type absorbent article 1.

Fig. 2 is a plan view and a schematic cross-sectional view of the pants-type absorbent article 1 in an unfolded and extended state.

Fig. 3 is a plan view of the absorbent main body 20.

Fig. 4 is a cross-sectional view of the absorbent main body 20 showing a section a-a of fig. 3.

Fig. 5 is a view for explaining the arrangement of the temperature sensitive agents 26 and 27 in the absorbent article 1 in the unfolded and extended state.

Fig. 6 is a diagram illustrating a positional relationship between the body of the wearer and the temperature sensitive agents 26 and 27 when the absorbent article 1 in the pants-type state is worn.

Fig. 7 is a schematic view showing a folding mode of the pants-type absorbent article 1.

Description of the reference numerals

1: absorbent articles (pant-type absorbent articles); 1 a: a waist opening; 1 b: a leg opening; 10: a waist member; 10 f: a front waist member; 10 fe: a front-side joining part; 10 ff: the front end part of the waist; 10 b: a rear waist member; 10 be: a rear side joint part; 10 bf: the back end of the waist; 10 et: an upper end; 10 gm: an opening rubber band (elastic member); 10L: a left side extension; 10R: a right side extension; 12: a stretchable sheet (membrane sheet); 12 f: a front stretchable sheet; 12 b: a rear stretchable sheet; 14: a low stretch sheet; 15: a buffer sheet; 15 p: a printing area; 20: an absorbent main body; 22: an absorbent core; 22 a: a core cladding sheet; 24: a skin side sheet; 25: a non-skin side sheet; 25 a: a liquid-impermeable sheet; 25 b: a water repellent sheet; 26: temperature sensitive agents (cold sensitive agents); 26 m: temperature sensitive agents (cold sensitive agents); 27: temperature sensitive agents (cold sensitive agents); 27 f: temperature sensitive agents (cold sensitive agents); 27 b: temperature sensitive agents (cold sensitive agents); 28: a weak somatosensory region; 30: a crotch rubber band; 40: a hinge portion; 50: three-dimensional pleating; 51: a three-dimensional gather elastic member; CL: a centerline; YS: an ultrasonic bonding section; ZS: an ultrasonic bonding portion.

Detailed Description

At least the following matters will be apparent from the description of the present specification and the accompanying drawings.

A pants-type absorbent article having a vertical direction and a horizontal direction intersecting each other, the pants-type absorbent article comprising: a liquid-absorbent main body; and a waist member disposed so as to overlap a non-skin side of the absorbent body, wherein a temperature sensitive agent or a cooling agent is provided in the absorbent body and the waist member, and a strength of the temperature sensitive agent or the cooling agent in the absorbent body is different from a strength of the temperature sensitive agent or the cooling agent in the waist member when the wearer wears the pants-type absorbent article.

According to such a pants-type absorbent article, different stimuli (a temperature-sensitive effect and a cooling-sensitive effect) can be applied to different parts of the body of the wearer. For example, by adjusting the sensory intensity of a temperature-sensitive agent (a cooling agent) in accordance with the amount of fat in each part of the body of the wearer, the posture of the wearer assumed during wearing, or the like, the wearer can feel appropriate stimulation.

In the pants-type absorbent article, it is preferable that the absorbent main body includes a liquid impermeable sheet, the temperature sensitive agent or the cooling agent is a volatile substance, and the temperature sensitive agent or the cooling agent is provided on a skin side of the liquid impermeable sheet in a thickness direction of the absorbent main body.

According to such a pants-type absorbent article, the volatilized temperature sensitive agent (cooling agent) is less likely to permeate through the non-skin side of the absorbent main body and is likely to diffuse toward the skin side. Therefore, the volatilized temperature sensitive agent easily reaches the body of the wearer, and can give appropriate stimulation to the periphery of the vaginal opening.

In the pants-type absorbent article, it is preferable that the temperature sensitive agent or the cooling agent of the waist member have a greater strength in body feeling than the temperature sensitive agent or the cooling agent of the absorbent main body.

According to such a pants-type absorbent article, the wearer can easily feel appropriate stimulation around the waist with a large amount of fat, and the wearer can hardly feel excessive stimulation around the vaginal opening with a small amount of fat. Therefore, the wearer can feel appropriate stimulation (a temperature effect or a cooling effect) as the entire absorbent article.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the temperature sensitive agent or the cooling agent of the front waist member has a greater strength in body feeling than the temperature sensitive agent or the cooling agent of the absorbent body at a position on the front side of the center position in the longitudinal direction of the absorbent body in the developed state.

According to such a pants-type absorbent article, when the wearer takes a sitting posture, the front waist member is less likely to be pressed against the body of the wearer, and therefore, the wearer can easily feel appropriate stimulation by making the sensible strength of the temperature sensitive agent in the front waist region strong. Further, since the absorbent main body is easily pressed against the crotch of the wearer, the sensible strength of the temperature sensitive agent is weak in the vicinity of the lower abdomen (vaginal opening), and thus the wearer can be prevented from feeling excessive irritation. This makes it possible to provide the wearer with a proper temperature (cooling) effect around the waist and the vaginal opening.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the rear waist member has a greater strength in the body feeling of the temperature sensitive agent or the cooling agent than a strength in the body feeling of the temperature sensitive agent or the cooling agent in a position on the front side of the center position in the longitudinal direction of the absorbent main body in the developed state.

According to such a pants-type absorbent article, when the wearer takes the prone position, the rear waist member is less likely to be pressed against the body of the wearer, and therefore, by making the sensible strength of the temperature-sensitive agent stronger in the rear waist region, the wearer can be made to feel appropriate stimulation easily. Further, since the absorbent main body is easily pressed against the lower abdomen of the wearer, the feeling of the wearer can be suppressed from being excessively irritated by making the sensible strength of the temperature sensitive agent weak around the vaginal opening. This makes it possible to provide the wearer with a proper temperature (cooling) effect around the waist and the vaginal opening.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the temperature sensitive agent or the cooling agent of the front waist member has a greater strength in body feeling than the temperature sensitive agent or the cooling agent of the absorbent body at a position rearward of the center position in the longitudinal direction of the absorbent body in the developed state.

According to such a pants-type absorbent article, when the wearer assumes a supine position, the front waist member is less likely to be pressed against the body of the wearer, and therefore, by making the sensible strength of the temperature sensitive agent stronger in the front waist region, the wearer can be made to feel appropriate stimulation easily. In addition, since the volatile temperature sensitive agent is likely to reach the periphery of the vaginal opening via the gluteal cleft and to be stimulated in the crotch of the wearer, the strength of the temperature sensitive agent is weak, and thus the wearer can be prevented from feeling excessive stimulation. This makes it possible to provide the wearer with a proper temperature (cooling) effect around the waist and the vaginal opening.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the rear waist member has a greater strength in the body feeling of the temperature sensitive agent or the cooling agent than a strength in the body feeling of the temperature sensitive agent or the cooling agent in a position rearward of a center position in a longitudinal direction of the absorbent main body in the developed state.

According to such a pants-type absorbent article, when the wearer takes the prone position, the rear waist member is less likely to be pressed against the body of the wearer, and therefore, by making the sensible strength of the temperature-sensitive agent stronger in the rear waist region, the wearer can be made to feel appropriate stimulation easily. In addition, since the volatile temperature sensitive agent is likely to reach the periphery of the vaginal opening via the gluteal cleft and to be stimulated in the crotch of the wearer, the strength of the temperature sensitive agent is weak, and thus the wearer can be prevented from feeling excessive stimulation. This makes it possible to provide the wearer with a proper temperature (cooling) effect around the waist and the vaginal opening.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the temperature sensitive agent or the cooling agent in a position on the front side of the center position in the longitudinal direction of the absorbent main body in the developed state has a greater strength in body feeling than the temperature sensitive agent or the cooling agent in the front waist member.

According to such a pants-type absorbent article, when the wearer takes a prone posture, the front waist member is likely to be pressed against the body of the wearer, and therefore, even if the body-sensory strength of the temperature-sensitive agent is weak in the front waist region, the wearer can be easily made to feel irritation. Further, the absorbent body is pressed against the abdomen of the wearer, and a gap (space) is easily formed between the crotch of the wearer and the absorbent body by the amount of the cloth in the crotch, and therefore, the temperature sensitive agent is less likely to contact the crotch of the wearer. Therefore, by making the sensible strength of the temperature sensitive agent on the front side of the absorbent main body strong, it is possible to easily apply appropriate stimulation to the periphery of the vaginal opening. This enables the wearer to feel the appropriate temperature (cooling) effect.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the temperature sensitive agent or the cooling agent in a position on the front side of the center position in the longitudinal direction of the absorbent main body in the developed state has a greater strength in body feeling than the temperature sensitive agent or the cooling agent in the rear waist member.

According to such a pants-type absorbent article, when the wearer assumes a supine position, the rear waist member is likely to be pressed against the body of the wearer, and therefore, even if the strength of the sensation of the temperature sensitive agent in the rear waist region is weak, the wearer is likely to feel irritation. Further, since the absorbent body is pressed against the hip of the wearer to leave a space in the crotch portion, a gap (space) is easily formed between the crotch portion of the wearer and the absorbent body, and thus the crotch portion of the wearer is less likely to come into contact with the temperature sensitive agent. Therefore, by making the sensible strength of the temperature sensitive agent on the front side of the absorbent main body strong, it is possible to easily apply appropriate stimulation to the periphery of the vaginal opening. This enables the wearer to feel the appropriate temperature (cooling) effect.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the strength of the temperature sensitive agent or the cooling agent in the longitudinal direction of the absorbent main body in the unfolded state is stronger than the strength of the temperature sensitive agent or the cooling agent in the front waist member.

According to such a pants-type absorbent article, when the wearer takes a prone posture, the front waist member is likely to be pressed against the body of the wearer, and therefore, even if the body-sensory strength of the temperature-sensitive agent is weak in the front waist region, the wearer can be easily made to feel irritation. Further, since the rear region of the absorbent main body is located at a relatively large distance from the vaginal opening of the wearer, it is difficult to apply stimulation of the temperature sensitive agent to the periphery of the vaginal opening, and thus, by making the strength of the temperature sensitive agent on the rear side of the absorbent main body strong, it is easy to apply appropriate stimulation to the periphery of the vaginal opening of the wearer. This enables the wearer to feel the appropriate temperature (cooling) effect.

In the pants-type absorbent article, it is preferable that the waist member has a front waist member and a rear waist member, and the strength of the temperature sensitive agent or the cooling agent in the longitudinal direction of the absorbent main body in the unfolded state is stronger than the strength of the temperature sensitive agent or the cooling agent in the rear waist member.

According to such a pants-type absorbent article, when the wearer assumes a supine position, the rear waist member is likely to be pressed against the body of the wearer, and therefore, even if the strength of the sensation of the temperature sensitive agent in the rear waist region is weak, the wearer can be easily made to feel irritation. Further, since the rear region of the absorbent main body is located at a relatively large distance from the vaginal opening of the wearer, it is difficult to apply stimulation of the temperature sensitive agent to the periphery of the vaginal opening, and thus, by making the strength of the temperature sensitive agent in the rear region of the absorbent main body strong, it is easy to apply appropriate stimulation to the periphery of the vaginal opening of the wearer. This enables the wearer to feel the appropriate temperature (cooling) effect.

In the pants-type absorbent article, it is preferable that the temperature sensitive agent or the cold sensitive agent is a volatile substance, the absorbent body includes an absorbent core containing a liquid absorbent material, and the temperature sensitive agent or the cold sensitive agent is provided at least in a part of a region overlapping the absorbent core when viewed in a thickness direction of the absorbent body.

According to such a pants-type absorbent article, a part of the temperature sensitive agent is likely to penetrate into the liquid absorbent material contained in the absorbent core, and the penetrated temperature sensitive agent is gradually volatilized from the absorbent core. Therefore, when the absorbent article is worn, the temperature sensitive agent is likely to leak little by little from the absorbent core, and the temperature sensitive effect is likely to be sustained for a long time.

In the pants-type absorbent article, it is desirable that the strength of the thermal sensation agent or the cooling sensation agent in the longitudinal direction of the absorbent main body in the unfolded state is stronger in front of the center position than in rear of the center position.

According to such a pants-type absorbent article, since the rear region of the absorbent main body is located farther from the vaginal opening of the wearer than the front region when the absorbent main body is worn, even if the sensible strength of the temperature sensitive agent in the rear region is made weaker than that in the front region, the wearer is less likely to feel a difference in the effect of temperature around the vaginal opening. Therefore, by making the strength of the temperature-sensitive agent less sensible in the rear region, the manufacturing cost of the absorbent article can be reduced while maintaining an appropriate temperature-sensitive effect.

In the pants-type absorbent article, it is desirable that a length of a portion of the absorbent main body on the rear side of the center position in the longitudinal direction is equal to or longer than a length of a portion of the absorbent main body on the front side of the center position.

According to such a pants-type absorbent article, the region where the temperature sensitive agent is provided is not excessively large on the front side in the longitudinal direction of the absorbent main body, and therefore, it is easy to suppress application of excessive irritation to the lower abdomen of the wearer. On the other hand, on the rear side in the longitudinal direction, the absorbent main body can easily come into contact with the buttocks of the wearer over a large area, can easily suppress leakage of excretory fluid, and can easily feel a temperature sensation effect in a range up to the vicinity of the sacrum of the wearer.

In the pants-type absorbent article, it is preferable that a weak body feeling region having a predetermined width in the left-right direction is provided in a central portion in the left-right direction of the absorbent main body, and a body feeling strength of the temperature sensitive agent and the cold sensitive agent in the weak body feeling region is weaker than a body feeling strength of the temperature sensitive agent and the cold sensitive agent in regions adjacent to the weak body feeling region on both sides in the left-right direction of the weak body feeling region.

According to such a pants-type absorbent article, the direct contact of the temperature sensitive agent with the vaginal opening can be suppressed when the absorbent article is worn. This suppresses excessive stimulation of the vaginal opening.

In the pants-type absorbent article, it is desirable that the strength of the sensation of the temperature sensitive agent or the cooling agent on the skin-side surface of the sheet member disposed at the most skin-side position of the waist member is higher than the strength of the sensation of the temperature sensitive agent or the cooling agent on the non-skin-side surface of the sheet member.

According to such a pants-type absorbent article, the warmth-sensitive agent is likely to come into contact with the skin of the wearer around the waist where the amount of fat is large and the irritation is difficult to transmit, and therefore the warmth-sensitive effect can be easily felt by the wearer.

In the pants-type absorbent article, it is preferable that the strength of the sensation of warmth or coldness by the warmth or coldness agent disposed on the non-skin-side surface of the skin side sheet located closest to the skin side of the absorbent main body is higher than the strength of the sensation of warmth or coldness by the skin side surface of the skin side sheet.

According to such a pants-type absorbent article, the temperature sensitive agent is less likely to directly contact the skin of the wearer in the vicinity of the vaginal opening where the amount of fat is small and the article is sensitive to irritation, and therefore excessive irritation to the wearer can be suppressed.

In the pants-type absorbent article, it is preferable that a plurality of protrusions extending in the vertical direction and protruding in the thickness direction are provided in parallel on the skin-side surface of the waist member.

According to such a pants-type absorbent article, the temperature sensitive agent provided on the convex portion is likely to come into contact with the skin of the wearer when worn. In addition, since the volatilized temperature sensitive agent is likely to diffuse through the convex portions adjacent to each other in the left-right direction, the wearer can feel the temperature effect of the temperature sensitive agent over a wide range of the waistline portion.

In the embodiment 1, the following embodiments are not to be considered in all respects

A pants-type absorbent article 1 (hereinafter, also simply referred to as "absorbent article 1") provided with a temperature sensitive agent 26 (or a cooling agent, details of which will be described later) will be described as an example of the pants-type absorbent article of embodiment 1. In the following description, the absorbent article 1 for physiological use is described, but the absorbent article 1 of the present embodiment includes, for example, diapers for adults and infants, and the use is not limited to physiological use.

< basic Structure of absorbent article 1 >

Fig. 1 is a schematic perspective view of a pants-type absorbent article 1, and fig. 2 is a plan view and a schematic cross-sectional view of the pants-type absorbent article 1 in an unfolded and extended state. The absorbent article 1 of the present embodiment includes a waistline member 10 and an absorbent main body 20.

In the pants-type state shown in fig. 1, the absorbent article 1 has a "vertical direction", a "horizontal direction", and a "front-rear direction" that intersect with each other. In fig. 1, the vertical direction is the vertical direction, the upper side (lower side) is the "upper" ("lower") in the vertical direction, the horizontal direction is the left-right direction, and the left side (right side) is the left (right) in the left-right direction. In the front-rear direction, the side positioned on the abdominal side of the wearer when worn is referred to as the "front side", and the side positioned on the back side of the wearer is referred to as the "rear side".

In the developed state of the absorbent article 1 shown in fig. 2 (the state in which the pant-type absorbent article 1 is spread out on a plane before being formed into a pant-type), the absorbent article 1 has a "longitudinal direction", "width direction", and "thickness direction" that intersect with each other. The longitudinal direction is a direction along the above-described vertical direction, and in fig. 2, one side in the longitudinal direction is referred to as "front side (ventral side)" and the other side is referred to as "rear side (dorsal side)". The width direction is a direction along the above-described left-right direction. The direction (direction penetrating the paper surface) orthogonal to the longitudinal direction and the width direction is defined as the thickness direction, and the side in contact with the skin of the wearer in the thickness direction is defined as the "skin side" and the opposite side is defined as the "non-skin side".

The top view (for example, fig. 2) of the present embodiment shows the extended state of the object. Here, the "stretched state" refers to a state in which the members shown in the plan view are stretched without wrinkles by stretching each elastic body (for example, a stretchable sheet 12 described later) provided in the absorbent article 1. For example, fig. 2 shows a state in which the waist member 10 and the absorbent body 20 constituting the absorbent article 1 are stretched until the size of the members alone matches or approaches the size of the members. In addition, the non-stretched state in which each elastic body naturally contracts to cause wrinkles and the like in each member is referred to as a "natural state".

(waist member 10)

The waistline member 10 is an exterior body constituting an exterior of the absorbent article 1. As shown in fig. 2, the waistline member 10 of the present embodiment has a substantially hourglass shape in a plan view in a developed state. That is, the center portion in the longitudinal direction is recessed inward in the width direction, and the recessed portion forms a pair of leg hole openings 1b shown in fig. 1 when formed into a pants-type.

The waist member 10 has a front waist member 10f located on the front side of the center line CL located at the center of the absorbent article 1 in the longitudinal direction and a rear waist member 10b located on the rear side. In the present embodiment, in fig. 2, a range shown by the front waist member 10f (a range from the center line CL to the abdomen side of the front side end (front upper end 10et) of the pants-type absorbent article 1) is the abdomen side portion, and a range shown by the rear waist member 10b (a range from the center line CL to the back side of the rear side end (rear upper end 10et) of the pants-type absorbent article 1) is the back side portion.

The front waist member 10f has a waist front end portion 10ff extending in the width direction at the front end and front joining portions 10fe (diagonally shaded portions inclined to the lower right in fig. 2) extending in the longitudinal direction provided at both left and right ends, and the rear waist member 10b has a waist rear end portion 10bf extending in the width direction at the rear end and rear joining portions 10be (diagonally shaded portions inclined to the lower right in fig. 2) extending in the longitudinal direction provided at both left and right ends.

In addition, the lumbar member 10 of the present embodiment includes: a low stretch sheet 14 which is formed in the shape of the waist member 10 and has almost no stretch in the right-left direction; and a stretchable sheet 12 (a front stretchable sheet 12f and a rear stretchable sheet 12b) which is laminated on a part of the skin-side surface of the low-stretch sheet 14 and has stretchability in the left-right direction. The lumbar member 10 further includes a cushion sheet 15 different from the stretchable sheet 12 and the low-stretchable sheet 14 at a position closest to the skin side of the front lumbar member 10 f. The cushion sheet 15 is provided to cover the front side end 20et in the longitudinal direction of the absorbent main body 20 (i.e., the edge of the front upper end portion of the absorbent main body 20) from the skin side in the thickness direction, and the front side end 20et can be suppressed from being in strong contact with the skin of the wearer by the cushion sheet 15.

The low stretch sheet 14 is formed of, for example, a through-air nonwoven fabric, a spunbond nonwoven fabric, or the like. The partially upper end 10et in the longitudinal direction of the low stretch sheet 14 is folded back and joined to the skin side in the longitudinal direction and the thickness direction, and the folded back portion in the front side (rear side) forms the aforementioned waist front end portion 10ff (waist rear end portion 10bf) at the front end portion (rear end portion).

Further, opening rubber bands 10gm (corresponding to elastic members) that expand and contract in the left-right direction are attached to the front waistline end portion 10ff and the rear waistline end portion 10bf by adhesive and provided inside the respective folded portions. That is, an opening rubber band 10gm extending in the left-right direction is provided at the upper end of the lumbar member 10, and the opening rubber band 10gm is bonded to the upper end of the lumbar member 10 with an adhesive. The "upper end portion" in the present embodiment refers to the uppermost portion (the UA portion shown in fig. 2) when the pants-type absorbent article 1 is divided into four parts in the vertical direction, or a portion which is located within a range of about 30mm from the upper end in the vertical direction (a portion which is manually grasped to stretch in the horizontal direction when worn), and in which the stretching force in the horizontal direction (the tightening force toward the wearer) is greater than the stretching force in the central portion in the vertical direction of the waist member 10.

In the present embodiment, the opening rubber bands 10gm are provided at the waistline front end portion 10ff and the waistline rear end portion 10bf, but the present invention is not limited to this, and for example, a band-shaped stretchable member such as a stretchable nonwoven fabric or a stretchable film may be provided.

The stretchable sheet 12 includes a front stretchable sheet 12f provided on the front waist member 10f and a rear stretchable sheet 12b provided on the rear waist member 10 b. The stretchable sheet 12 of the present embodiment is a stretchable film (for example, a stretchable member formed by melting an elastomer resin such as polyurethane or styrene and formed into a sheet having a uniform thickness, and corresponds to a membrane sheet), and has higher air tightness than a stretchable nonwoven fabric sheet. By providing the stretchable sheet 12 having high air tightness in the waistline portion 10, the discharge of the volatilized temperature sensitive agent 26 from the skin side to the non-skin side is suppressed, and therefore, the temperature sensitive effect can be continued.

In addition, from the viewpoint of airtightness, the stretchable sheet 12 may be disposed at the position closest to the skin side, but in the case of using a stretchable film, even if the temperature sensitive agent 26 is directly applied to the stretchable film, the retention of the temperature sensitive agent 26 is poor, and further, when the stretchable film is in contact with the body, the touch of the skin is not good. Therefore, it is desirable to provide at least 1 sheet member (low stretch sheet 14, cushion sheet 15) between the stretch sheet 12 and the skin of the wearer.

The stretchable sheet 12 of the present embodiment may be a stretchable nonwoven fabric sheet mixed with polyurethane (for example, a stretchable nonwoven fabric sheet mixed with stretchable fibers of a polyurethane elastomer which is a thermoplastic elastomer having elasticity) instead of the stretchable film. This sheet has higher air tightness than a nonwoven fabric sheet not mixed with polyurethane (for example, a nonwoven fabric sheet of 100% polypropylene), and therefore can obtain the same effect (continuation of the temperature-sensitive effect) as the stretch film. That is, the lumbar member 10 includes at least one of a nonwoven fabric sheet and an elastic film mixed with polyurethane.

The cushion sheet 15 is formed of, for example, a through-air nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, or the like, and is provided along the left-right direction so as to be located closest to the skin side in the thickness direction and to straddle the outer end 20et on the front side of the absorbent main body 20 in the up-down direction (longitudinal direction).

The cushion sheet 15 is provided with a printing region 15p on which a pattern (a pattern having a different appearance from the surrounding such as characters, symbols, images, and colors) is printed in the left-right direction. That is, the front waistline member 10f is provided with a printing region 15p on which a pattern is printed. In order to avoid problems such as pattern blurring during printing (for ease of printing), the printed region 15p is subjected to a base treatment, and the air tightness from the skin side to the non-skin side is higher than that in the portion not subjected to the base treatment. Examples of the method of the base treatment include a known corona discharge treatment.

The absorbent article 1 has a cushion sheet 15 provided with a temperature sensitive agent 26, which will be described in detail later. In the present embodiment, the temperature sensitive agent 26 is applied to a predetermined region of the skin side surface in the thickness direction of the cushion sheet 15. In the case where the temperature sensitive agent 26 is applied to the skin-side surface of the cushion sheet 15, the print region 15p is desirably provided on the non-skin-side surface. Since the ink may elute when the high-concentration temperature sensitive agent 26 is in direct contact with the ink forming the print region 15p, the dissolved matter can be prevented from adhering to the body by setting the positional relationship.

In the front side lumbar member 10f, the low stretch sheet 14 may be folded and extended without providing the cushion sheet 15. That is, as in the case of the folding back of the rear side of the low stretch sheet 14 shown in fig. 2, the folding back portion may be formed by overlapping the front side folding back portion with the front side end 20et (front side upper end) of the absorbent main body 20, thereby alleviating the situation where the front side end 20et of the absorbent main body 20 strongly contacts the skin of the wearer. In this case, the same effect as that of the cushion sheet 15 can be obtained by providing the printed region 15p and the temperature sensitive agent 26 in the folded portion.

The stretchable sheet 12 and the low-stretch sheet 14 are bonded in a state of being overlapped in the thickness direction, and a plurality of ultrasonic bonding portions are formed by ultrasonic bonding (ultrasonic sealing) in which ultrasonic vibration and pressure are applied and dispersed, thereby performing the bonding. Since the ultrasonic bonding portion of the low-stretchability sheet 14 is melted to form a film, the release of the volatilized temperature sensitive agent 26 from the skin side to the non-skin side can be suppressed (airtightness is improved) and the temperature sensitive effect can be sustained, as compared with the low-stretchability sheet 14 in a state where the ultrasonic bonding portion is not present. The ultrasonic bonding portion of the present embodiment is not formed as an identical ultrasonic bonding portion, but formed as an ultrasonic bonding portion YS shown in an enlarged view of a portion Y of fig. 2 and an ultrasonic bonding portion ZS shown in an enlarged view of a portion Z of fig. 2, which will be described in detail later.

On the other hand, unlike the stretchable sheet 12 and the low stretchable sheet 14, the cushion sheet 15 is bonded with an adhesive. The region to which the adhesive is applied is a central portion in the vertical direction on the non-skin side of the cushion sheet 15, and is larger in area per unit area than the ultrasonic bonding portions YS and ZS. That is, the area of the cushion sheet 15 coated with the adhesive per unit area is larger than the areas of the ultrasonic bonding portions YS and ZS per unit area of the plurality of sheets (the stretchable sheet 12 and the low-stretchable sheet 14) when viewed in the front-rear direction.

Since the adhesive of the cushion sheet 15 is solidified to form a layer having high air tightness, by making the application area of the adhesive larger than the area of the ultrasonic bonding portions YS and ZS, it is possible to suppress the volatilized temperature sensitive agent 26 from being discharged from the skin side to the non-skin side and to continue the temperature sensitive effect, as compared with the case where the application area of the adhesive is smaller than the area of the ultrasonic bonding portions YS and ZS. Further, since the ultrasonic bonding portions YS and ZS are melted and formed into a film shape having low stretchability, by making the area of the ultrasonic bonding portions YS and ZS smaller than the application area of the adhesive, the stretchability of the waistline member 10 can be increased to improve the fit and to realize a comfortable wearing feeling, as compared with the case where the area of the ultrasonic bonding portions YS and ZS is made larger than the application area of the adhesive.

In addition, the stretchable sheet 12 stretches, but the low-stretch sheet 14 does not stretch, so that wrinkles having regular convex shapes and cavities inside are formed on the surface of the low-stretch sheet 14 on the non-skin side. Here, when the stretchable sheet 12 is a stretchable nonwoven fabric (a member having air permeability), the vaporized temperature sensitive agent 26 passes through the stretchable nonwoven fabric and is held in the cavity portion inside the aforementioned gathers. In this way, for example, when the cavity portion inside the wrinkle becomes smaller with the movement of the body, a part of the vaporized temperature sensitive agent 26 held in the cavity portion moves inside through the stretchable nonwoven fabric. That is, the gasified temperature sensitive agent 26 moves to the skin side, and therefore, the temperature sensitive agent 26 can be more easily felt.

(absorbent body 20)

Fig. 3 is a plan view of the absorbent main body 20. Fig. 4 is a cross-sectional view of the absorbent main body 20 showing a section a-a of fig. 3.

The absorbent main body 20 is a liquid-absorbing member for absorbing excretory fluid such as menstrual blood, and has a substantially rectangular shape in plan view in which the longitudinal direction in an expanded and stretched state (i.e., the longitudinal direction of the absorbent main body 20) extends along the vertical direction of the absorbent article 1, as shown in fig. 3. The absorbent body 20 has an absorbent core 22, a skin side sheet 24 disposed on the skin side of the absorbent core 22, and a non-skin side sheet 25 disposed on the non-skin side of the absorbent core 22. In addition, a temperature sensitive agent 27 is provided in a predetermined region of the absorbent main body 20.

The absorbent core 22 is formed by molding a liquid absorbent material into a predetermined shape, and in the present embodiment, is formed into a substantially rectangular shape in plan view (hatched portion in fig. 3) and a convex shape in cross section (hatched portion in fig. 4). Examples of the liquid absorbent material include liquid absorbent materials in which liquid absorbent fibers such as pulp fibers contain superabsorbent polymers (so-called SAP) and the like. The absorbent core 22 may have its outer peripheral surface covered with a liquid-permeable sheet member (core wrap sheet 22a) such as tissue paper or nonwoven fabric.

The skin side sheet 24 is a liquid-permeable sheet member that can come into contact with the skin of the wearer when worn, and is formed of, for example, a hydrophilic air-through nonwoven fabric, a spunbond nonwoven fabric, or the like. The skin side sheet 24 may have a structure of 2 or more layers. For example, a second sheet (not shown in fig. 4) which is a sheet member having substantially the same function and structure as the skin-side sheet may be provided on the non-skin side of the skin-side sheet 24.

The non-skin side sheet 25 has a two-layer structure including a liquid-impermeable sheet 25a for preventing leakage of excretory fluid such as menstrual blood absorbed by the absorbent core 22 to the outside, and a water-repellent sheet 25b disposed on the non-skin side of the liquid-impermeable sheet 25 a. As the liquid impermeable sheet 25a, for example, a resin film such as a polyethylene film or a polypropylene film is used, and as the water repellent sheet 25b, for example, a nonwoven fabric having flexibility is used. The skin side sheet 24 and the non-skin side sheet 25 are each sized to cover the entire absorbent core 22.

The water repellent sheet 25b of the non-skin side sheet 25 has an extension portion 25c extending outward in the width direction from both ends 20es of the absorbent main body 20. The extension portion 25c is folded toward the skin side in the thickness direction at both ends 20es in the width direction of the absorbent main body 20 with the fulcrum 50B as a folding origin, and is folded back toward the non-skin side at an apex 50S located closer to the skin side than the skin side sheet 24, thereby forming a three-dimensional gather 50 (see fig. 5). The three-dimensional gather elastic member 51 such as a rubber band extending in the longitudinal direction of the absorbent main body 20 is disposed at the apex 50S of the three-dimensional gather 50 in an extended state in the longitudinal direction, and the apex 50S is raised toward the skin of the wearer by the contraction force exerted by the three-dimensional gather elastic member 51 when the absorbent article 1 is worn. Thus, the three-dimensional gathers 50 function as a leakage preventing wall for suppressing side leakage of excretory fluid or the like.

The three-dimensional gathers 50 are preferably made of the same number of nonwoven fabrics from the fulcrum 50B to the vertex 50S, and more specifically, preferably 2 or more sheets, in order to prevent the temperature sensitive agent 27 from leaking outward. In order to prevent the temperature sensitive agent from leaking out, the density of the nonwoven fabric of the three-dimensional gathers 50 is preferably higher than the density of the nonwoven fabric of the skin side sheet 24.

Further, a plurality of crotch elastic bands 30 which are stretchable in the longitudinal direction are provided at predetermined positions between the liquid-impermeable sheet 25a and the water-repellent sheet 25b on the non-skin side in the thickness direction of the absorbent core 22. As shown in fig. 3 and 4, the crotch elastic band 30 is provided at the center portion in the left-right direction (width direction) of the absorbent main body 20 from the front side in contact with the lower abdomen to the rear side in contact with the hip.

Further, a plurality of hinge portions 40 are formed on the skin side of the absorbent main body 20 (absorbent core 22). The hinge portion 40 is provided so as to deform (become a deformed fold) the absorbent main body 20 along the wearer's body when the absorbent article 1 is worn by the wearer, and is formed in a concave shape recessed from the skin side to the non-skin side on the skin side of the absorbent main body 20 (absorbent core 22) as shown in fig. 4. The concave shape of the hinge portion 40 is, for example, a compression portion formed by compressing the absorbent main body 20 (absorbent core 22) from the skin side, and becomes a high density portion in which the density of the absorbent core 22 is higher than the density around the absorbent core.

In the absorbent main body 20, a temperature sensitive agent 27 as a volatile substance is provided at a position between the skin side sheet 24 and the absorbent core 22 in the thickness direction. In the present embodiment, the temperature sensitive agent 27 is applied to a predetermined region of the skin side sheet 24 other than the skin side surface. In addition, a weak body feeling region 28 having a predetermined width in the left-right direction is provided in the center portion in the width direction of the absorbent main body 20. Details of the temperature sensitive agent 27 and the feeble body sensitive region 28 will be described later.

The temperature sensitive agent 27 is preferably provided so as not to be mixed with an adhesive for bonding various members. For example, when the temperature sensitive agent 27 is mixed with the adhesive for bonding the crotch rubber band 30, the bonding strength of the crotch rubber band 30 is reduced, and the original elastic effect may not be exhibited. Therefore, in the region where the temperature sensitive agent 27 and the adhesive are likely to be mixed, it is preferable to use other bonding means such as the ultrasonic bonding described above, instead of bonding with the adhesive.

The absorbent article 1 is folded in half with the center line CL in the longitudinal direction as a fold line from the developed state of fig. 2 so that the skin side of the front waist member 10f and the skin side of the rear waist member 10b are opposed to each other, and both end portions in the left-right direction are joined to each other, thereby forming a front joining portion 10fe and a rear joining portion 10 be. Thus, the front waist member 10f and the rear waist member 10b are connected in a ring shape, and a pants-type state is formed with the waist opening 1a and the pair of leg openings 1b as shown in fig. 1. As a bonding method of the bonding portions 10fe and 10be, for example, ultrasonic bonding or bonding using an adhesive is generally performed, but the method is not limited thereto, and heat sealing, a combination of known bonding, or the like may be used.

< temperature- sensitive Agents 26 and 27>

Next, the temperature sensitive agent 26 and the temperature sensitive agent 27 will be described. The temperature sensitive agents 26 and 27 are provided for alleviating dysmenorrhea and cold symptoms of the wearer, and include a temperature sensitive stimulant which gives a warm feeling to the wearer when the wearer is stimulated by applying a stimulus to the temperature of the wearer, and the temperature sensitive stimulant is mixed with a volatile solvent (or the temperature sensitive stimulant is volatile). In the present embodiment, the temperature sensitive agent 26 is provided on the lumbar member 10 and the temperature sensitive agent 27 is provided on the absorbent main body 20, but both may be the same type of temperature sensitive agent or different types of temperature sensitive agents.

The temperature stimulant is preferably a plant-derived compound from the viewpoint of the wearer's feeling of comfort. Examples of the warm-feeling stimulants include capsaicin, capsaicin (LD 50: 47mg/kg, molecular weight: 305), capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, norvanillyl amine, etc.), capsorubin, benzyl nicotinate (LD 50: 2,188mg/kg, molecular weight: 213), β -butoxyethyl nicotinate, N-acetyl vanillylamide, vanillyl nonanoate, polyol, paprika, capsicum tincture, capsicum extract, vanillyl nonanoate, vanillyl alcohol alkyl ether derivatives (e.g., vanillyl alcohol ethyl ether, vanillyl alcohol butyl ether (LD 50: 4,900mg/kg, molecular weight: 210), vanillyl alcohol pentyl ether, vanillyl alcohol hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratryl alcohol derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, vanillyl alcohol, capsaicin acetate, capsaicin, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol (LD 50: 250mg/kg, molecular weight: 294), zingerone, hesperidin, pyrrolidone carboxylic acid, and any combination thereof.

The thermal stimulant of the present embodiment stimulates TRPV1, which is one of temperature-sensitive TRP channels, to activate the same, and is capsaicin or vanillyl alcohol butyl ether. That is, TRPV1 of the wearer is activated, causing fever to the wearer through the sympathetic nervous system (the wearer generates heat in the body).

In other words, the user is not warmed by himself or herself at a high temperature as in the case of the disposable warmer for portable use, but is warmed by himself or herself without being heated as in the case of capsaicin or the like. Therefore, the wearer can feel cool and warm without low-temperature scald and scald.

The solvent is not particularly limited as long as it can contain a temperature sensitive stimulant, and examples thereof include lipophilic solvents and hydrophilic solvents. The solvent is capable of dissolving, dispersing, etc., the warming stimulant, for example. In the case where the temperature stimulant is a volatile substance, the solvent is not necessarily used, and only the temperature stimulant may be used.

Examples of the lipophilic solvent include: fats and oils such as natural oils (e.g., fatty acid esters such as triglycerides, coconut oil, linseed oil, and tri (caprylic/capric) glyceride); hydrocarbons (e.g., paraffins, such as 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 glycerol; higher alcohols such as octanol, lauryl alcohol, and myristyl alcohol.

In addition, in general, a temperature sensitive agent is less effective unless it is in contact with the skin of the wearer. For example, although a volatile substance such as a perfume can exhibit an effect of suppressing peripheral odor as long as it becomes a gas, the temperature sensitive agent exerts its main effect by directly contacting the skin of the wearer after being vaporized. Therefore, by bringing the temperature sensitive agents 26 and 27 into contact with the skin of the wearer through a nonwoven fabric or the like, the wearer can gradually feel the effect of the temperature sensitive agents 26 and 27 on the skin.

In the present specification, the temperature sensitive agents 26 and 27 are described as examples of volatile substances which give stimulation to the wearer, but the present invention is not limited to the temperature sensitive agents, and for example, a cold sensitive agent may be used. When the cooling agent is used, discomfort of the wearer due to stuffiness and stickiness can be reduced.

Examples of the psychrophilic agents include menthol (e.g., l-menthol) and derivatives thereof (e.g., menthyl lactate), methyl salicylate, camphor, essential oils derived from plants (e.g., peppermint and eucalyptus), and the like. Further, the psychrotolerant is preferably a substance that stimulates a temperature-sensitive TRP channel, similarly to the temperature- sensitive agents 26 and 27.

In addition, in order to improve the temperature effect, a small amount of a cooling agent may be mixed into the temperature sensitive agent, or in order to improve the cooling effect, a small amount of a temperature sensitive agent may be mixed into the cooling agent, thereby improving the temperature or cooling effect.

< arrangement of temperature-sensitive Agents 26 and 27 (Cold-sensitive Agents) >

Fig. 5 is a view for explaining the arrangement of the temperature sensitive agents 26 and 27 in the absorbent article 1 in the unfolded and extended state. Fig. 6 is a diagram illustrating a positional relationship between the body of the wearer and the temperature sensitive agents 26 and 27 when the absorbent article 1 in the pants-type state is worn.

The temperature sensitive agent 26 is applied to a rectangular region having a predetermined length (width) W26 in the left-right direction on the skin-side surface of the cushion sheet 15 disposed on the skin-side most position of the lumbar member 10 (front lumbar member 10f) at a position on the upper side in the up-down direction (front side in the longitudinal direction) with respect to the print region 15p as shown in fig. 5. The temperature sensitive agent 26 is volatile as described above, and easily penetrates through the nonwoven fabric-made cushioning sheet 15 in the thickness direction. Therefore, at least a part of the temperature sensitive agent 26 applied to the skin side of the cushioning sheet 15 is also present on the non-skin side of the cushioning sheet 15.

When the absorbent article 1 is formed in a pants-type configuration as shown in fig. 1 by folding it in two at the center position CL in the longitudinal direction, the skin-side surface of the front waist member 10f and the skin-side surface of the rear waist member 10b are overlapped so as to face each other in the thickness direction. At this time, a part of the temperature sensitive agent 26 applied to the skin side of the cushion sheet 15 (the front waist member 10f) may adhere to the rear waist member 10 b. That is, the temperature sensitive agent may be provided on the skin-side surface of the rear waist member 10b in a region facing the temperature sensitive agent 26 applied to the cushion sheet 15 (in fig. 5, a rectangular region surrounded by a broken line). Hereinafter, the temperature sensitive agent provided on the rear waist member 10b is referred to as temperature sensitive agent 26 m.

The region of the front waist member 10f (the cushion sheet 15) where the temperature sensitive agent 26 is provided is a position corresponding to the position of the ilium of the wearer when the absorbent article 1 is worn (see fig. 6). Therefore, the temperature sensitive agent 26 can provide a temperature sensitive effect to the ilium periphery on the abdominal side of the wearer. The region of the rear waist member 10b where the temperature sensitive agent 26m is provided is a position corresponding to the position of the wearer's sacrum when the absorbent article 1 is worn (see fig. 6). Therefore, the temperature sensitive agent 26m can provide a temperature sensitive effect to the sacral periphery on the back side of the wearer.

On the other hand, the temperature sensitive agent 27 is applied to a pair of left and right rectangular regions having a predetermined size in the width direction (left and right direction) and continuing from the front end to the rear end in the longitudinal direction of the absorbent main body 20, as shown in fig. 5, on the non-skin side surface of the skin side sheet 24 disposed at the position closest to the skin side of the absorbent main body 20. The temperature sensitive agent 27 is also volatile as the temperature sensitive agent 26, and easily penetrates the nonwoven skin side sheet 24 in the thickness direction. Therefore, at least a part of the temperature sensitive agent 27 applied to the non-skin side of the skin side sheet 24 is also present on the skin side of the skin side sheet 24.

The coating amount and coating concentration per unit area may be changed between the temperature sensitive agent 27 coated on the front side of the center position CL in the longitudinal direction of the absorbent main body 20 and the temperature sensitive agent 27 coated on the rear side of the center position CL. Hereinafter, the temperature sensitive agent provided at the front side of the center position CL in the longitudinal direction of the absorbent main body 20 will be referred to as the temperature sensitive agent 27f, and the temperature sensitive agent provided at the rear side of the center position CL will be referred to as the temperature sensitive agent 27 b. In the absorbent main body 20, only the temperature sensitive agent 27f may be provided, and the temperature sensitive agent 27b may not be provided.

The region of the absorbent main body 20 where the temperature sensitive agent 27f is provided is a position corresponding to the lower abdomen of the wearer in the crotch region when the absorbent article 1 is worn (see fig. 6). Therefore, the temperature sensitive agent 27f can provide a temperature sensitive effect to the lower abdomen area (particularly, the vaginal opening area) of the wearer. The region of the absorbent main body 20 where the temperature sensitive agent 27b is provided is a position corresponding to the buttocks of the wearer in the crotch region when the absorbent article 1 is worn (see fig. 6). Therefore, the temperature sensitive agent 27b can provide a temperature sensitive effect to the vicinity of the buttocks of the wearer.

In this way, the temperature sensitive agents 26, 26m, 27f, and 27b provided in the absorbent article 1 can provide a temperature sensitive effect (cooling effect) to different parts of the body of the wearer. Therefore, by adjusting the coating concentration and the coating amount of the temperature sensitive agents 26, 26m, 27f, and 27b, the strength of the temperature sensitive agent (cooling agent) in the waist member 10 and the absorbent body 20 can be made different when the absorbent article is worn by the wearer. For example, by adjusting the sensory intensity of a temperature-sensitive agent (a cooling agent) in accordance with the amount of fat in each part of the body of the wearer, the posture of the wearer assumed during wearing, and the body movement, the wearer can feel appropriate stimulation.

< sensory Strength with respect to temperature-sensitive Agents (Cold-sensitive Agents) >

In the absorbent article 1 according to embodiment 1, the sensible intensity of the temperature-sensitive agent 26 of the waistline member 10 is adjusted to be higher than the sensible intensity of the temperature-sensitive agent 27 of the absorbent body 20. In other words, the degree of the intensity of the stimulus caused by the temperature sensitive agent felt by the wearer at the waistline member 10 is larger than the degree of the intensity of the stimulus caused by the temperature sensitive agent felt by the wearer at the absorbent main body 20 when the absorbent article 1 is worn.

Here, the sensory strength can be obtained by performing a sensory test using a patch on a plurality of subjects. The sensory test is performed by the following method, for example.

First, a predetermined region is cut out from the waist member 1 to prepare a patch for use in a sensory test. For example, the sheet member (cushion sheet 15) disposed at the position closest to the skin side of the front waist member 10f in the unfolded and extended state is peeled off, and the portion between the front joining portions 10fe and 10fe located on both sides in the left-right direction is cut into six equal parts to obtain 6 kinds of patches (front waist patches). For each patch, the skin side and the non-skin side can be distinguished. Similarly, the sheet member (low-stretch sheet 14) on the skin side which is the most disposed at the position corresponding to the front waist member 10f in the rear waist member 10b is peeled off, and the portion between the rear joining portions 10be, 10be located on both sides in the left-right direction is cut into six equal parts to obtain 6 kinds of patches (rear waist patches).

Next, the skin side surfaces of the 6 kinds of prepared front lumbar patches were left in contact with the inner sides of the upper arms of the certain subject a for a predetermined time (for example, 1 hour). Then, the degree of intensity of the stimulus felt by subject a after the lapse of the predetermined time was recorded. The degree of the intensity of the stimulus is set to, for example, "level 4: feel warm "," grade 3: slightly feeling warm "," level 2: say warm "," grade 1: nothing is felt "," level 0: itching, pain "were felt on 5 scale. The highest evaluation rank among the 6 types of front waist patches was defined as the degree of strength of the temperature sensitive agent 26 felt by the subject a (i.e., the strength of bodily sensation) in the front waist member 10 f. Such tests are performed on a plurality of subjects (for example, subjects a to F), and the average value of the evaluation levels is calculated to determine the strength of the body feeling of the user (user) of the absorbent article 1 with respect to the temperature sensitive agent 26 of the front waist member 10F. Further, similar tests were performed on the non-skin side surfaces of the 6 types of front waist patches as needed to obtain the body feeling strengths.

Similarly, sensory tests were also performed on 6 types of rear waist patches to determine the strength of the sensation of the user (user) of the absorbent article 1 with respect to the temperature sensitive agent 26m of the rear waist member 10 b.

A sensory test was also performed on the temperature sensitive agent 27 provided in the absorbent main body 20 in the same manner. First, the sheet member (skin-side sheet 24) disposed at the position closest to the skin side in the absorbent main body 20 in the unfolded and stretched state was peeled off, and the region on the front side of the center position CL in the longitudinal direction was trisected and cut to obtain 3 kinds of patches (front absorbent patches). Further, the region on the rear side of the center position CL in the longitudinal direction was trisected and cut to obtain 3 kinds of patches (rear absorbent patches). Next, the skin side surfaces of the prepared 3 kinds of front side absorbent body patches and 3 kinds of rear side absorbent body patches were left in contact with the inner side of the upper arm of a certain subject a for a predetermined time (for example, 1 hour), respectively. Then, the degree of intensity of the stimulus felt by subject a after the lapse of the predetermined time was recorded. The evaluation scale with the highest evaluation scale for each of the 3 types of front absorbent body patches was defined as the degree of strength of the temperature sensitive agent 27f (i.e., the somatosensory strength) felt by the front subject a in the absorbent main body 20. The evaluation scale with the highest evaluation scale for each of the 3 types of rear absorbent body patches was defined as the degree of strength of the temperature sensitive agent 27b (i.e., the somatosensory strength) felt by the subject a on the rear side of the absorbent main body 20. Such tests are performed on a plurality of subjects (for example, subjects a to F), and the average value of the evaluation levels is calculated to determine the strength of the body sensation of the user (user) of the absorbent article 1 with respect to the temperature sensitive agents 27F and 27b of the absorbent main body.

In addition to the above-described sensory test, the body sensory intensity may be quantitatively determined by determining the concentrations of the temperature sensitive agents 26 and 27 applied to the lumbar member 10 and the absorbent body 20, respectively. For example, the following headspace solid phase microextraction method can be used.

First, a plurality of patches were prepared in the same manner as in the sensory test, and sample pieces were prepared. Next, each sample piece was measured by an electron impact ionization method using a gas chromatography-mass spectrometer (GCMS-QP 2010Plus manufactured by shimadzu corporation) and helium as a carrier gas in a scanning mode. In this method, each sample piece is folded into a smaller state and placed in a beaker. The upper part of the beaker was covered with aluminum foil and then with a plastic paraffin film, and the sealed beaker was placed in a 37-degree constant-temperature water bath. SPME fibers (Sigma-Aldrich 50/39 μm DVB/CAR/PDMS, Stableflex2cm) were inserted through aluminum foil into the beaker and the temperature sensitive components of each sample piece were extracted. Immediately thereafter, the SPME fibers removed from the beaker were measured with a gas chromatography-mass spectrometer. The values obtained by dividing the masses thus obtained by the area of the sample piece were calculated. That is, by calculating the amounts of the temperature sensitive agents 26 and 27 provided per unit area for each sample piece, the strength of the temperature sensitive agent in each region of the absorbent article 1 can be quantitatively determined as the amount of the temperature sensitive agent.

In embodiment 1, the temperature sensitive agent 26 provided in the lumbar member 10 is adjusted so that the strength in body feeling is greater than the strength in body feeling of the temperature sensitive agent 27 provided in the absorbent body 20. As shown in fig. 6, the region where the temperature sensitive agent 26 is provided is a region that comes into contact with a portion of the wearer's body where the amount of fat is large at the waistline (particularly, the abdominal periphery), and therefore the stimulus by the temperature sensitive agent 26 is difficult to be transmitted to the wearer. Therefore, by making the sensible strength of the temperature-sensitive agent 26 of the lumbar member 10 as strong as possible, the wearer can easily feel appropriate stimulation even in the lumbar region with a large amount of fat.

On the other hand, the region where the temperature sensitive agent 27 is provided is a region that comes into contact with a portion of the wearer's body where the amount of fat is small in the crotch portion (particularly, the periphery of the vaginal opening), and therefore the stimulus caused by the temperature sensitive agent 27 is easily transmitted to the wearer. If the sensible intensity of the temperature-sensitive agent 27 is assumed to be as strong as the sensible intensity of the temperature-sensitive agent 26, the temperature-sensitive agent 27 may cause excessive stimulation to the vicinity of the vaginal opening, thereby causing discomfort to the wearer. In contrast, in the absorbent article 1 according to embodiment 1, the strength of the temperature sensitive agent 27 in the absorbent main body 20 is made lower than the strength of the temperature sensitive agent 26 in the lumbar member 10, so that the wearer can be less likely to feel excessive irritation around the vaginal opening with less fat. Therefore, the entire absorbent article 1 can provide the wearer with a suitable temperature (cooling) effect.

As described above, the temperature sensitive agent 27 is a volatile substance. The temperature sensitive agent 27 is provided on the skin side in the thickness direction of the liquid-impermeable sheet 25a constituting the absorbent main body 20. Therefore, the volatilized temperature sensitive agent 27 is less likely to permeate the non-skin side of the absorbent main body 20 and is likely to diffuse toward the skin side. Therefore, even if the concentration or amount of the temperature sensitive agent 27 applied to the absorbent body 20 is reduced so as not to excessively increase the body sensory intensity, the volatilized temperature sensitive agent 27 easily reaches the crotch of the wearer, and appropriate stimulation can be applied to the periphery of the vaginal opening.

The strength of the sensation of body by the temperature sensitive agents 26 and 27 may be adjusted in consideration of the posture of the wearer when wearing the absorbent article 1. For example, the strength of the temperature sensitive agent 27f provided at the front side of the center position CL in the longitudinal direction of the absorbent main body 20 may be made weaker than the strength of the temperature sensitive agent 26 provided at the front waist member 10 f. By doing so, appropriate stimulation can be easily applied in a case where the wearer takes a sitting posture.

When the wearer takes a sitting posture, since it is difficult to apply a body pressure to the waistline on the abdominal side of the wearer, the region of the front waistline member 10f where the temperature sensitive agent 26 is provided is not easily pressed against the body of the wearer (see fig. 6). Therefore, in order to cause the wearer to feel appropriate stimulation in the abdominal-side waistline region, it is desirable to make the sensory intensity of the temperature sensitive agent 26 as strong as possible. On the other hand, since body pressure is easily applied to the periphery of the vaginal opening at the crotch of the wearer, the region of the absorbent main body 20 where the temperature sensitive agent 27f is provided is easily pressed against the body of the wearer (see fig. 6). Therefore, in order to cause the wearer to feel appropriate stimulation around the vaginal opening, it is desirable that the sensible intensity of the temperature sensitive agent 27f is at least lower than the sensible intensity of the temperature sensitive agent 26. Thus, when the wearer takes a sitting posture, the wearer can feel a proper temperature feeling (cooling feeling) effect around the waist and the vaginal opening.

The strength of the temperature sensitive agent 27f provided at the front side of the center position CL in the longitudinal direction of the absorbent main body 20 may be made weaker than the strength of the temperature sensitive agent 26m provided at the rear waist member 10 b. By doing so, when the wearer lies in a prone position, appropriate stimulation can be easily applied.

When the wearer takes the prone position, since it is difficult to apply a body pressure to the waistline on the back side of the wearer, the region of the back-side waistline member 10b where the temperature sensitive agent 26m is provided is difficult to press against the body of the wearer (see fig. 6). Therefore, in order to make the wearer feel appropriate stimulation in the back waistline region, it is desirable to make the sensory intensity of the temperature sensitive agent 26m as strong as possible. On the other hand, since body pressure is easily applied to the lower abdomen (vaginal opening) periphery in the crotch of the wearer, the region of the absorbent main body 20 where the temperature sensitive agent 27f is provided is easily pressed against the body of the wearer (see fig. 6). Therefore, in order to cause the wearer to feel appropriate stimulation around the vaginal opening, it is desirable that the sensible intensity of the thermal sensitive agent 27f is at least lower than that of the thermal sensitive agent 26 m. Thus, when the wearer takes the prone position, the wearer can feel an appropriate temperature (cooling) effect around the waist and the vaginal opening.

The strength of the temperature-sensitive agent 27b provided at the position rearward of the center position CL in the longitudinal direction of the absorbent main body 20 may be made weaker than the strength of the temperature-sensitive agent 26 provided at the front waist member 10 f. By doing so, when the wearer lies in a supine position, appropriate stimulation can be easily applied.

When the wearer is in a supine position, it is difficult to apply a body pressure to the waistline on the abdominal side of the wearer, and therefore the region of the front waistline member 10f where the temperature sensitive agent 26 is provided is difficult to press against the body of the wearer (see fig. 6). Therefore, in order to cause the wearer to feel appropriate stimulation in the abdominal-side waistline region, it is desirable to make the sensory intensity of the temperature sensitive agent 26 as strong as possible. On the other hand, since body pressure is easily applied to the buttocks of the wearer, the region of the absorbent main body 20 where the temperature sensitive agent 27b is provided is easily pressed against the body of the wearer on the buttocks side. In this case, the volatilized temperature sensitive agent 27b easily moves to the front side of the crotch portion through the gluteal cleft, reaches the periphery of the vaginal opening, and causes irritation to the periphery of the vaginal opening. Therefore, in order to cause the wearer to feel appropriate stimulation around the vaginal opening, it is desirable that the sensible intensity of the temperature sensitive agent 27b be at least weaker than that of the temperature sensitive agent 26. Thus, when the wearer is in the supine position, the wearer can feel a proper temperature (cooling) effect around the waist and the vaginal opening.

In addition, the strength in body feeling of the temperature sensitive agent 27b provided at the position on the rear side of the center position CL in the longitudinal direction of the absorbent main body 20 may be made weaker than the strength in body feeling of the temperature sensitive agent 26m provided at the rear waist member 10 b. By doing so, when the wearer lies in a prone position, appropriate stimulation can be easily applied.

When the wearer takes the prone position, since it is difficult to apply a body pressure to the waistline on the back side of the wearer, the region of the back-side waistline member 10b where the temperature sensitive agent 26m is provided is difficult to press against the body of the wearer (see fig. 6). Therefore, in order to make the wearer feel appropriate stimulation in the back waistline region, it is desirable to make the sensory intensity of the temperature sensitive agent 26m as strong as possible. On the other hand, in the crotch of the wearer, the volatilized temperature sensitive agent 27b may reach the vaginal opening periphery through the gluteal groove and irritate the vaginal opening periphery. Therefore, in order to cause the wearer to feel appropriate stimulation around the vaginal opening, it is desirable that the sensible intensity of the temperature sensitive agent 27b be at least lower than that of the temperature sensitive agent 26 m. Thus, when the wearer takes the prone position, the wearer can feel an appropriate temperature (cooling) effect around the waist and the vaginal opening.

In addition, as shown in fig. 3, the temperature sensitive agent 27 is provided so as to have a portion overlapping with the absorbent core 22 when viewed in the thickness direction. With such a configuration, a part of the temperature sensitive agent 27 easily penetrates into the liquid absorbent material contained in the absorbent core 22, and the penetrated temperature sensitive agent 27 is gradually volatilized from the absorbent core 22. Therefore, when the absorbent article 1 is worn, the temperature sensitive agent 27 slightly bleeds out from the absorbent core 22, and the temperature sensitive effect can be sustained for a long time.

In addition, the strength of the temperature sensitive agent 27b in the longitudinal direction of the absorbent body 20 at the rear side of the center position CL may be made weaker than the strength of the temperature sensitive agent 27f in the longitudinal direction of the absorbent body 20 at the front side of the center position CL. When the absorbent article 1 is worn, the rear region of the absorbent main body 20 is located at a greater distance from the wearer's vaginal opening than the front region, and therefore, even if the strength of the body feeling of the temperature sensitive agent 27b in the rear region is made weaker than the strength of the body feeling of the temperature sensitive agent 27f in the front region, the effect of the wearer's feeling of temperature around the vaginal opening is less likely to be different. Therefore, by reducing the coating concentration or the coating amount of the temperature sensitive agent 27b in the rear region, the manufacturing cost of the absorbent article 1 can be reduced and the appropriate temperature sensing effect of the absorbent article 1 can be maintained.

In this case, it is desirable that the length of the portion of the absorbent main body 20 on the rear side of the center position CL in the longitudinal direction is equal to or greater than the length of the portion on the front side of the center position CL. In fig. 5, the length L20b of the portion of the absorbent main body 20 on the rear side of the center position CL is longer than the length L20f of the portion of the absorbent main body 20 on the front side of the center position CL (L20f ≦ L20 b). As described above, when the strength of the temperature sensitive agent 27f in the front region of the absorbent body 20 is stronger than the strength of the temperature sensitive agent 27b in the rear region of the absorbent body 20, the region in which the temperature sensitive agent 27f is provided is widened if the area of the front region of the absorbent body 20 is large, and therefore the stimulus to the lower abdomen of the wearer may be excessively strong. Therefore, by making the length L20f on the front side in the longitudinal direction of the absorbent main body 20 shorter than the length L20b on the rear side of the absorbent main body 20, it is possible to suppress the area where the temperature sensitive agent 27f is provided from becoming excessively wide. On the other hand, by increasing the length L20b of the rear side in the longitudinal direction of the absorbent main body 20, the absorbent main body 20 easily comes into contact with the buttocks of the wearer over a large area when the absorbent article 1 is worn (see fig. 6), and the rear leakage of the excretory fluid can be easily suppressed, and the temperature effect can be easily felt up to the vicinity of the sacrum of the wearer.

The absorbent main body 20 of the present embodiment includes a weak sensory region 28 (see fig. 3) having a predetermined width in the lateral direction and extending in the longitudinal direction at the center in the lateral direction. In the production of the absorbent article 1, the temperature sensitive agent 27 (cooling agent) is not applied to the weak body sensitive region 28. Therefore, in the weak body-sensory region 28, the strength of the sensation of the temperature-sensitive agent 27 is weaker than in regions adjacent to the region on both sides in the left-right direction (regions to which the temperature-sensitive agent 27 is applied in fig. 3 and 5). Therefore, it is possible to suppress excessive stimulation of the vaginal opening of the wearer at the center portion in the left-right direction when the absorbent article 1 is worn. Further, since the temperature sensitive agent 27 is provided on both sides in the left-right direction of the feeble body sensitive region 28, the stimulus can be applied to the periphery of the vaginal opening by the temperature sensitive agent 27. This enables the wearer to feel an appropriate temperature effect. After the absorbent article 1 is manufactured, the temperature sensitive agent 27 and a part of the temperature sensitive agent 26 that have volatilized may adhere to the less sensitive region 28. However, even if such a temperature sensitive agent 27 or the like is partially adhered, the strength of the weak somatosensory region 28 is extremely weak as compared with the region directly coated with the temperature sensitive agent 27, and therefore, the wearer (vaginal opening) is less likely to be affected by discomfort or the like.

In the 2 nd embodiment, the following embodiments are also provided

In embodiment 2, an example of adjusting the absorbent article 1 similar to embodiment 1 such that the sensible intensity of the temperature sensitive agent 27 of the absorbent main body 20 is greater than the sensible intensity of the temperature sensitive agent 26 of the lumbar member 10 will be described. The structure of the absorbent article 1 and the positions where the temperature sensitive agents 26 and 27 are provided are substantially the same as those in embodiment 1.

In the absorbent article 1 according to embodiment 2, the strength of the temperature- sensitive agents 26 and 27 can be adjusted in consideration of the posture of the wearer when wearing the absorbent article. For example, the strength of the temperature sensitive agent 27f provided at the front side of the center position CL in the longitudinal direction of the absorbent main body 20 may be made stronger than the strength of the temperature sensitive agent 26 provided at the front waist member 10 f. By doing so, when the wearer lies in a prone position, appropriate stimulation can be easily applied.

When the wearer takes the prone position, the wearer tends to exert a physical pressure on the waistline on the abdominal side. Therefore, the region of the front waist member 10f where the temperature sensitive agent 26 is provided is likely to be pressed against the abdomen of the wearer, and the wearer is likely to feel the effect of the temperature sensation even if the strength of the temperature sensitive agent 26 is small. In addition, since the amount of fat is small in the vicinity of the iliac crest in the abdomen of the wearer (see fig. 6), the wearer is likely to feel the stimulus of the warming agent 26 in this region. On the other hand, when the wearer takes the prone posture, the abdominal side (front side) region of the absorbent main body 20 is pressed against the abdomen of the wearer, and therefore, a margin is generated in the cloth of the crotch portion of the absorbent main body 20, and a gap (space) is easily formed between the body (crotch portion) of the wearer and the absorbent main body 20. Therefore, the temperature sensitive agent 27f provided in the absorbent body 20 is less likely to directly contact the wearer's crotch. Therefore, the strength of the absorbent body 20 in the front side of the temperature sensitive agent 27f is made stronger than the strength of the front side waist member 10f in the temperature sensitive agent 26. By doing so, the volatilized temperature sensitive agent 27f is likely to accumulate in the space between the crotch portion of the wearer and the absorbent main body 20, and is likely to give an appropriate stimulus to the periphery of the vaginal opening. Therefore, the wearer can feel the appropriate temperature (cooling) effect.

The strength of the temperature sensitive agent 27f provided at the front side of the center position CL in the longitudinal direction of the absorbent main body 20 may be made stronger than the strength of the temperature sensitive agent 26m provided at the rear waist member 10 b. By doing so, when the wearer lies in a supine position, appropriate stimulation can be easily applied.

In the case where the wearer takes a supine posture, it is easy to apply a body pressure to the waistline of the back side of the wearer. Therefore, the region of the rear waist member 10b where the temperature sensitive agent 26m is provided is likely to be pressed against the back of the wearer, and the wearer is likely to feel the temperature effect even if the strength of the temperature sensitive agent 26m is small. In addition, since the amount of fat is small in the vicinity of the sacral protrusion on the back of the wearer (see fig. 6), the wearer is likely to feel the stimulus of the warming agent 26m in this region. On the other hand, when the wearer is in a supine position, the area on the back side (rear side) of the absorbent main body 20 is pressed against the back of the wearer, and therefore, a margin is generated in the cloth of the lower crotch portion of the absorbent main body 20, and a gap (space) is easily formed between the body (crotch portion) of the wearer and the absorbent main body 20. Therefore, the temperature sensitive agent 27f provided in the absorbent body 20 is less likely to directly contact the wearer's crotch. Therefore, the strength of the absorbent body 20 in the front side of the temperature sensitive agent 27f is stronger than the strength of the back front side waist member 10b in the temperature sensitive agent 26 m. By doing so, the volatilized temperature sensitive agent 27f is likely to accumulate in the space between the crotch portion of the wearer and the absorbent main body 20, and is likely to give appropriate stimulation to the periphery of the vaginal opening. Therefore, the wearer can feel the appropriate temperature (cooling) effect.

The strength of the temperature-sensitive agent 27b provided at the position rearward of the center position CL in the longitudinal direction of the absorbent main body 20 may be made stronger than the strength of the temperature-sensitive agent 26 provided at the front waist member 10 f. By doing so, when the wearer lies in a prone position, appropriate stimulation can be easily applied.

When the wearer takes the prone position, the wearer tends to exert a physical pressure on the waistline on the abdominal side. Therefore, the region of the front waist member 10f where the temperature sensitive agent 26 is provided is likely to be pressed against the abdomen of the wearer, and the wearer is likely to feel the effect of the temperature sensation even if the strength of the temperature sensitive agent 26 is small. In addition, since the amount of fat is small in the vicinity of the iliac crest in the abdomen of the wearer (see fig. 6), the wearer is likely to feel the stimulus of the warming agent 26 in this region. On the other hand, since the rear region of the absorbent main body 20 is located at a relatively large distance from the vaginal opening of the wearer, it is difficult to apply the stimulus of the temperature sensitive agent 27b to the periphery of the vaginal opening. In addition, as described above, a gap (space) is easily formed between the crotch portion of the wearer and the absorbent main body 20. Therefore, by making the strength of the temperature sensitive agent 27b in the rear side of the absorbent main body 20 stronger than the strength of the temperature sensitive agent 26 in the front waist member 10f, it becomes easy to apply appropriate stimulation to the periphery of the vaginal opening of the wearer. Therefore, the wearer can feel the appropriate temperature (cooling) effect.

The strength of the temperature sensitive agent 27b provided at the position rearward of the center position CL in the longitudinal direction of the absorbent main body 20 may be made stronger than the strength of the temperature sensitive agent 26m provided at the rear waist member 10 b. By doing so, when the wearer lies in a supine position, appropriate stimulation can be easily applied.

In the case where the wearer takes a supine posture, it is easy to apply a body pressure to the waistline of the back side of the wearer. Therefore, the region of the rear waist member 10b where the temperature sensitive agent 26m is provided is likely to be pressed against the back of the wearer, and the wearer is likely to feel the temperature effect even if the strength of the temperature sensitive agent 26m is small. In addition, since the amount of fat is small in the vicinity of the sacral protrusion on the back of the wearer (see fig. 6), the wearer is likely to feel the stimulus of the warming agent 26m in this region. On the other hand, since the rear region of the absorbent main body 20 is located at a relatively large distance from the vaginal opening of the wearer, it is difficult to apply the stimulus of the temperature sensitive agent 27b to the periphery of the vaginal opening. In addition, as described above, a gap (space) is easily formed between the crotch portion of the wearer and the absorbent main body 20. Therefore, by making the strength of the temperature sensitive agent 27b in the rear side of the absorbent main body 20 stronger than the strength of the temperature sensitive agent 26m in the rear side waist member 10b, it becomes easy to apply appropriate stimulation to the periphery of the vaginal opening of the wearer. Therefore, the wearer can feel the appropriate temperature (cooling) effect.

Other embodiments are also possible

The above embodiments are for easy understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it is needless to say that the present invention includes equivalents thereof.

In the above embodiment, the range of the temperature sensitive agent 26 provided on the lumbar member 10 and the temperature sensitive agent 27 provided on the absorbent body 20 has been described, but it is desirable that the width of the temperature sensitive agent 26 provided on the absorbent article 1 in the left-right direction be larger than the width of the temperature sensitive agent 27 in the left-right direction. In fig. 5, a width W26 in the left-right direction of the temperature sensitive agent 26 is larger than a width W27 in the left-right direction of the temperature sensitive agent 27 (a distance between one end and the other end of the temperature sensitive agent 27 in the left-right direction). This narrows the range in which the wearer feels the warming effect of the warming agent 27 around the vaginal opening which is low in fat and sensitive to irritation, and widens the range in which the wearer feels the warming effect of the warming agent 26 around the waistline which is high in fat. Therefore, the wearer can feel more appropriate temperature effect.

In the above embodiment, the example in which the temperature sensitive agent 26 is applied to the skin-side surface of the cushion sheet 15 disposed at the position closest to the skin side in the thickness direction of the front waist member 10f has been described. With such a configuration, the strength of the thermal agent 26 on the skin-side surface of the cushion sheet 15 is greater than the strength of the thermal agent 26 on the non-skin-side surface of the cushion sheet 15. That is, since the temperature sensitive agent 26 is likely to come into contact with the skin of the wearer, the wearer can easily feel the temperature effect effectively in the vicinity of the waistline where much fat and stimulation are difficult to be transmitted. In the above-described sensory test, the strength of the sensation of the temperature sensitive agent 26 on the skin-side surface or the non-skin-side surface of the cushion sheet 15 can be compared by testing both the skin-side surface and the non-skin-side surface of the patch.

However, the site to which the temperature sensitive agent 26 is applied is not limited to the above example, and the temperature sensitive agent 26 may be applied to the non-skin side surface of the cushion sheet 15 disposed at the position closest to the non-skin side in the thickness direction of the front waist member 10f, or the temperature sensitive agent 26 may be applied to another sheet member.

In the above embodiment, an example in which the temperature sensitive agent 27 is applied to the non-skin side surface of the skin side sheet 24 disposed at the position closest to the skin side in the thickness direction of the absorbent main body 20 has been described. With such a configuration, the strength of the temperature sensitive agent 27 on the non-skin side surface of the skin side sheet 24 is higher than the strength of the temperature sensitive agent 27 on the skin side surface of the skin side sheet 24. That is, since the temperature sensitive agent 27 is hard to come into direct contact with the skin of the wearer, excessive stimulation of the wearer can be suppressed in the vicinity of the vaginal opening where fat is low and stimulation is sensitive. In the above-described sensory test, the strength of the sensory feeling of the temperature sensitive agent 27 on the skin side surface or the non-skin side surface of the skin side sheet 24 can be compared by testing both the skin side surface and the non-skin side surface of the patch.

However, the site to which the temperature sensitive agent 27 is applied is not limited to the above example, and the temperature sensitive agent 27 may be applied to the skin side surface of the skin side sheet 24 disposed at the position closest to the skin side in the thickness direction of the absorbent main body 20, or the temperature sensitive agent 27 may be applied to another sheet member.

In the above embodiment, an example in which the stretchable sheet 12 is provided to the lumbar member 10 to provide the lumbar member 10 with stretchability in the right-left direction has been described. When the stretchable sheet 12 is contracted, the low stretchable sheet 14 and the cushion sheet 15 having low stretchability are loosened, and a plurality of fine wrinkles extending in the vertical direction (longitudinal direction) are easily formed on the surface of the lumbar member 10. That is, a plurality of protrusions (wrinkles) extending in the vertical direction and protruding in the thickness direction are formed in parallel in the lateral direction on the skin-side surface of the lumbar member 10. Therefore, when the absorbent article 1 is worn, the temperature sensitive agent 26 provided on the convex portion is likely to contact the skin of the wearer. In addition, since the volatilized temperature sensitive agent 26 is likely to penetrate and diffuse between the convex portions (i.e., concave portions) adjacent to each other in the left-right direction, the wearer is likely to feel the temperature sensitive effect of the temperature sensitive agent 26 over a wide range of the waistline portion.

In the above embodiment, the absorbent body 20 is provided with the crotch elastic band 30 which stretches and contracts in the longitudinal direction, but it is desirable that at least a part of the temperature sensitive agent 27 overlaps with the crotch elastic band 30 when viewed in the thickness direction. The crotch elastic band 30 is provided on the non-skin side of the absorbent core 22, so that when the absorbent article 1 is worn, the absorbent core 22 is easily lifted toward the skin of the wearer and brought into close contact with the crotch by the contraction force of the crotch elastic band 30, and leakage of excretory fluid such as menstrual blood is easily suppressed. In addition, since the temperature sensitive agent 27 is likely to contact the skin of the wearer at the portion overlapping the crotch elastic band 30, the temperature sensitive effect (cooling effect) of the temperature sensitive agent 27 can be further improved.

In the above-described embodiment, the example in which the stretchable sheet 12 and the low-stretchable sheet 14 are laminated in the thickness direction to constitute the waistline member 10 stretchable in the left-right direction has been described, but the waistline member 10 may be stretchable in the left-right direction by another structure. For example, two layers of non-stretchable sheet members may be stacked, and an elastic member such as a rubber band stretchable in the left-right direction may be sandwiched between the non-stretchable sheet members.

< packaging of absorbent article 1 >

The absorbent article 1 of the present embodiment is folded after being formed into a pants-type shape, and 1 absorbent article 1 is put into 1 packaging container and packaged. That is, the absorbent article 1 is individually wrapped and folded in a wrapped state.

Fig. 7 is a schematic view showing a folding manner of the pants-type absorbent article 1, the left side shows a state before the absorbent article 1 is folded, the center shows a state before the left side extension 10L and the right side extension 10R are folded, and the right side shows a state in which the absorbent article 1 is folded in the vertical direction at a folding line BL.

As shown in the left side view of fig. 7, the absorbent article 1 of the present embodiment includes a left side extension 10L located on the left side of the left side end 20Le of the absorbent main body 20, and a right side extension 10R located on the right side of the right side end 20Re of the absorbent main body 20. First, as shown in the center view of fig. 7, the left projecting portion 10L is folded to the right of the left end 20Le of the absorbent main body 20, and the right projecting portion 10R is folded to the left of the right end 20Re of the absorbent main body 20. Next, as shown in the right drawing of fig. 7, the absorbent article 1 is folded in the vertical direction along the folding line BL, and is packaged in this state.

In this way, in the packaged state of the absorbent article 1, the left side extension portion 10L and the right side extension portion 10R are packaged in a state of overlapping the temperature sensitive agent 26 in the front-rear direction. That is, in the packaged state, at least a part of the temperature sensitive agent 26 overlaps at least one of the left side extension portion 10L and the right side extension portion 10R as viewed in the front-rear direction.

Therefore, in the packaged state, the vaporized thermal sensitive agent 26 can be suppressed from being discharged in the front-back direction (from the skin side to the non-skin side).

In fig. 7, the left side extension 10L is folded to the right side, the right side extension 10R is folded to the left side, and the absorbent article 1 is folded in the vertical direction along the folding line BL, but the order is not limited to this, and for example, the right side extension 10R may be folded first. Note that all the folding directions are folded so that the ventral side (front side) faces each other, but the folding directions are not limited to this, and for example, the folding directions may be folded in the vertical direction along the folding line BL so that the back side (rear side) of the absorbent article 1 faces each other.

Claims (18)

1. A pants-type absorbent article characterized in that,

the pants-type absorbent article has a vertical direction and a horizontal direction intersecting each other,

the pants-type absorbent article has:

a liquid-absorbent main body; and

a waist member configured to overlap a non-skin side of the absorbent main body,

a temperature sensitive agent or a cold sensitive agent is provided in the absorbent main body and the waist member,

when the wearer wears the pants-type absorbent article, the temperature-sensitive agent or the cold-sensitive agent of the absorbent main body has a strength in which the temperature-sensitive agent or the cold-sensitive agent is sensed differently from the strength in which the temperature-sensitive agent or the cold-sensitive agent of the waist member is sensed.

2. A pant-type absorbent article according to claim 1,

the absorbent main body is provided with a liquid-impermeable sheet,

the temperature sensitive agent or the cold sensitive agent is a volatile substance,

the temperature sensitive agent or the cooling agent is provided on the skin side of the liquid-impermeable sheet in the thickness direction of the absorbent main body.

3. A pant-type absorbent article according to claim 2,

the temperature-sensitive agent or the cold-sensitive agent of the waistline member has a greater somatosensory strength than the temperature-sensitive agent or the cold-sensitive agent of the absorbent main body.

4. A pant-type absorbent article according to claim 3,

the waist member has a front waist member and a rear waist member,

the strength of the temperature-sensitive agent or the cooling agent in the front waist member is greater than the strength of the temperature-sensitive agent or the cooling agent in the position forward of the center position in the longitudinal direction of the absorbent main body in the developed state.

5. A pant-type absorbent article according to claim 3 or 4,

the waist member has a front waist member and a rear waist member,

the rear waist member has a greater strength of the temperature sensitive agent or the cooling agent than that of the temperature sensitive agent or the cooling agent at a position forward of the center position in the longitudinal direction of the absorbent main body in the developed state.

6. A pant-type absorbent article according to any one of claims 3 to 5,

the waist member has a front waist member and a rear waist member,

the strength of the temperature-sensitive agent or the cooling agent in the front waist member is stronger than the strength of the temperature-sensitive agent or the cooling agent in a position rearward of the center position in the longitudinal direction of the absorbent main body in the developed state.

7. A pant-type absorbent article according to any one of claims 3 to 6,

the waist member has a front waist member and a rear waist member,

the rear waist member has a greater strength in the sense of body feeling of the temperature sensitive agent or the cooling agent than the strength in the sense of body feeling of the temperature sensitive agent or the cooling agent at a position rearward of the center position in the longitudinal direction of the absorbent main body in the deployed state.

8. A pant-type absorbent article according to claim 2,

the waist member has a front waist member and a rear waist member,

the temperature-sensitive agent or the cooling-sensitive agent in a position on the front side of the center position in the longitudinal direction of the absorbent main body in the expanded state has a greater strength in body feeling than the temperature-sensitive agent or the cooling-sensitive agent in the front waist member.

9. A pant-type absorbent article according to claim 2 or 8,

the waist member has a front waist member and a rear waist member,

the temperature-sensitive agent or the cooling agent in a position on the front side of the center position in the longitudinal direction of the absorbent main body in the expanded state has a greater strength in body feeling than the temperature-sensitive agent or the cooling agent in the rear waist member.

10. A pant-type absorbent article according to claim 8 or 9,

the waist member has a front waist member and a rear waist member,

the strength of the thermal sensitive agent or the cooling agent in the longitudinal direction of the absorbent main body in the expanded state is greater than the strength of the thermal sensitive agent or the cooling agent in the front waist member.

11. A pant-type absorbent article according to any one of claims 8 to 10,

the waist member has a front waist member and a rear waist member,

the strength of the temperature-sensitive agent or the cooling agent in the longitudinal direction of the absorbent main body in the expanded state is greater at a position rearward of the center position than at the rear waist member.

12. A pant-type absorbent article according to any one of claims 1-11,

the temperature sensitive agent or the cold sensitive agent is a volatile substance,

the absorbent main body is provided with an absorbent core containing a liquid absorbent material,

the temperature sensitive agent or the cooling agent is provided at least in a part of a region overlapping the absorbent core when viewed in a thickness direction of the absorbent main body.

13. A pant-type absorbent article according to any one of claims 1-12,

the strength of the temperature sensitive agent or the cooling agent sensed by the absorbent body in the longitudinal direction of the absorbent body in the expanded state is higher at a position forward of the center position than at a position rearward of the center position.

14. A pant-type absorbent article according to claim 13,

in the longitudinal direction, a length of a portion of the absorbent main body on the rear side of the center position is equal to or greater than a length of a portion of the absorbent main body on the front side of the center position.

15. A pant-type absorbent article according to any one of claims 1-14,

a weak body feeling region having a predetermined width in the left-right direction is provided at a central portion in the left-right direction of the absorbent main body,

the strength of the temperature sensitive agent and the strength of the cold sensitive agent in the weak sensory region are lower than the strength of the temperature sensitive agent and the cold sensitive agent in regions adjacent to the weak sensory region on both sides in the left-right direction.

16. A pant-type absorbent article according to any one of claims 1-15,

the strength of the sensation of the temperature sensitive agent or the cooling agent on the skin-side surface of the sheet member disposed at the most skin-side position of the waist member is higher than the strength of the sensation of the temperature sensitive agent or the cooling agent on the non-skin-side surface of the sheet member.

17. A pant-type absorbent article according to any one of claims 1-16,

the strength of the temperature-sensitive agent or the cold-sensitive agent in the non-skin-side surface of the skin side sheet disposed at the position closest to the skin side of the absorbent main body is higher than the strength of the temperature-sensitive agent or the cold-sensitive agent in the skin side surface of the skin side sheet.

18. A pant-type absorbent article according to any one of claims 1-17,

a plurality of protrusions extending in the vertical direction and protruding in the thickness direction are provided in parallel in the horizontal direction on the skin-side surface of the lumbar member.

Images