TW201922194A - Absorbent article - Google Patents

Abstract

An absorbent article provided with a surface layer and an absorption layer, the absorbent article having a longitudinal direction corresponding to a direction connecting an abdomen-side portion, a crotch portion, and a back-side portion of a wearer, and a width direction orthogonal to the longitudinal direction, and the absorbent article moreover having a front portion, a rear portion, and a central portion located between the front portion and the rear portion along the longitudinal direction, the central portion including a region corresponding to an excretion point, wherein the absorbent article has a region including an agent for imparting a cooling sensation in the absorption layer or in a member further toward the surface-layer side from the absorption layer, and the absorption layer is provided with a dividing portion at a position that overlaps the region including the agent for imparting a cooling sensation in a plan view.

Description

Absorbent article

The invention relates to an absorbent article such as menstrual tampons, incontinence pads, diapers and the like.

Absorptive articles such as menstrual tampons may become soggy or sticky when they have a lot of excretion or long-term use, which may cause discomfort to the wearer. On the other hand, there has been a technology that seeks to improve the wearing feeling by including a cooling agent such as a cooling agent in the absorbent article (for example, Patent Documents 1 and 2). The cold sensate evaporates and stimulates the wearer's sensory nerve cells, TRPM8 (Transient Receptor Potential Melastatin-8, M8 subtype) or TRPA1 (Transient Receptor Potential Ankyrin-1, Transient Receptor Potential Ankyrin-1) ) And so on to change the threshold of the receptor, thereby making people feel cool. Regarding the absorbent article described in Patent Document 2, in order to cope with the problem that the cold-sensing material is consumed due to excretion, the amount of the cold-sensing material in the area in contact with the excretory portion of the wearer is larger than in other areas. [Prior Art Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2002/083191 [Patent Document 2] Japanese Patent Laid-Open No. 2010-234031

The present invention provides an absorbent article comprising a front layer and an absorbent layer, and having a longitudinal direction corresponding to a direction connecting a ventral portion, a lower crotch portion, and a dorsal portion of a wearer, and a width direction orthogonal to the longitudinal direction, and A member having a front portion, a rear portion, and an intermediate portion located between the front portion and the rear portion and including a region corresponding to an excretion point along the longitudinal direction, and the member on the absorption layer or on the front layer side than the absorption layer It has a region containing a cold-sensing agent, and the absorption layer is provided, in a plan view, with a region that overlaps the region containing the cold-sensing agent, and has a plurality of divided portions. The divided portions are arranged in the form of slit portions. In addition, the present invention provides a method for manufacturing an absorbent article, comprising the steps of: applying a cold sensation agent over a specific width of a raw material member that becomes the absorbent layer; and applying a cooler agent on the surface of the raw material member that becomes the absorbent layer. A wider width of the cloth is provided with a cut-off region extending in the longitudinal direction of the absorption layer.

The above and other features and advantages of the present invention can be further clarified with reference to the accompanying drawings and the following description as appropriate.

The present invention relates to an absorbent article which effectively maintains a moderate cooling effect on the wearer's skin for a long time.

The content of the cold sensation agent in the absorbent article is continuously reduced over time due to volatilization, and the cooling effect is continuously weakened. However, if only the amount of the cold-sensitive material is increased as in the absorbent article described in Patent Document 2, the irritation to the skin becomes too strong, which may impair the wearing feeling.

In this regard, the absorbent article of the present invention can effectively maintain a moderate cooling effect on the wearer's skin for a long period of time.

Hereinafter, a menstrual tampon (hereinafter also referred to as a tampon) 10 as a preferred embodiment of the absorbent article of the present invention will be described with reference to the drawings. In the present invention, unless specifically stated otherwise, the side in contact with the human body is referred to as the skin surface side or the skin contact surface side or the front side, and the opposite side is referred to as the non-skin surface side or non-skin contact surface. Side or back side. Regarding members that do not have a surface that comes into contact with the human body, these terms are also used as terms that indicate the relative positional relationship in the component configuration of the absorbent article. In addition, a direction that is positioned on the front side of the human body when worn is referred to as the front, and a direction that is positioned on the rear side is referred to as the rear. The normal direction of the front or back of an absorbent article is called thickness direction.

As shown in FIGS. 1 and 2, the sanitary napkin 10 includes a front surface layer 1 on the skin contact surface side, and a liquid-retaining absorbent layer 3 on the non-skin contact surface side of the front layer 1. In this embodiment, the back surface layer 2 is arranged on the non-skin contact surface side of the absorption layer 3. The front layer 1 is provided with liquid permeability for feeding the liquid to the absorption layer 3, and the back layer 2 is provided with leak resistance to the liquid in the absorption layer 3. The front layer 1 and the back layer 2 have a size covering both sides of the absorption layer 3 and extending toward the outside of the outer edge of the absorption layer 3. Further, an intermediate fiber layer 4 having liquid diffusibility is provided between the front layer 1 and the absorption layer 3. Further, side sheets 5 are laminated on both sides of the skin abutment surface side of the front layer 1. The side sheet 5 and the back layer 2 extend outward in the width direction of the absorbent layer 3 to form a side flap 6 as a fixing device for clothes or the like. Adhesive portions (not shown) for fixing the sanitary napkin 10 to clothing are provided on the non-skin contacting surface sides of the side flap portion 6 and the back surface layer 2. In the laminated structure of this sheet, the outer peripheral edge of the sanitary napkin 10 becomes the outer peripheral sealing portion 9 without interposing the absorption layer 3 therebetween.

The sanitary napkin 10 may include other constituent members, and may have a form without the intermediate fiber layer 4 and the side sheet 5. Furthermore, it may have a leak-proof groove formed by squeezing from the front layer 1 to the absorption layer 3, and a plurality of embossings on the front layer 1. In addition, the side sheet 5 may be joined to the front layer 1 on one side, and a free end portion may be left on the inner side than the two sides of the front layer 1, and an elastic member or the like may be disposed on the free end portion to constitute a prevention. Missing flanging.

The sanitary napkin 10 has a longitudinal shape in a longitudinal direction (Y direction) and a width direction (X direction) orthogonal to the longitudinal direction in a plan view. In addition, the front layer 1, the back layer 2, and the absorbent layer 3 have a longitudinal shape similar to the sanitary napkin 10. The longitudinal direction corresponds to the direction connecting the ventral portion, the lower part of the condyle, and the dorsal portion of the wearer when the tampon 10 is worn. The width direction corresponds to the direction of the left and right legs connected to the wearer's crotch. In this specification, the longitudinal direction (Y direction) and the width direction (X direction) refer to the downward direction of the sanitary napkin 10 as well as the downward direction of the front layer 1, the back layer 2, and the absorption layer 3.

The sanitary napkin 10 has a middle portion C including a region corresponding to the excretion point of the wearer in the longitudinal direction. Furthermore, it has the front-side part F arrange | positioned on the front and lower abdomen side more than the middle part C, and the rear-side part R arrange | positioned on the buttocks side rear. Further, in the middle portion C, a liquid receiving region C1 facing the above-mentioned excretion point and directly receiving the excretion liquid is provided in the center portion in the width direction. As shown in Figs. 1 and 3, the "central portion in the width direction" where the liquid-receiving area C1 is located refers to a range of a specific width that extends from the centerline L in the width direction to the left and right, and refers to the widthwise ends of the absorbent layer. The edge 39 is closer to the inner range. Specifically, it refers to a portion of the sanitary napkin 10 that extends from the center line L in the width direction to the left and right and ranges from 40% to 60% with respect to the width of the absorbent layer. In addition, the middle portion C, the liquid receiving region C1, the front portion F, and the rear portion R indicate the division of the sanitary napkin 10, and also indicate the division of the front layer 1, the absorption layer 3, and the back layer 2 corresponding thereto.

The division positions of the middle portion C, the front portion F, and the rear portion R can be appropriately set in accordance with the length of the absorbent article set according to the purpose of use and the like. In the case where a side wing portion which is bent and fixed toward the lower part of the trunk of the shorts is provided, an area along the longitudinal direction of the side wing portion becomes the middle portion C. The sanitary napkin 10 of this embodiment is an example of a shape set for daily use, and the longitudinal length is equally divided into three parts, and a front part F, a middle part C, and a rear part R are set. In the case of daily sanitary napkins, the middle section follows this setting. In general, regardless of the shape of the sanitary napkin 10, the middle portion C can be set to a position at a fixed distance from the front portion F. Furthermore, with respect to diapers, etc. for an adult or a child, or a urine absorbent pad, etc., the longitudinal length is equally divided into three parts, and a front part F, a middle part C, and a rear part R are set.

Next, the cooling sensation agent in the sanitary napkin 10 and the split portion 8 of the absorbent layer 3 will be described.

The region containing the cold-sensitive agent is a member disposed on the absorption layer 3 or on the front surface layer 1 side than the absorption layer 3. The cold sensation agent is a chemical agent that does not need to volatilize and stimulate the temperature sensor on the skin and / or mucosal surface of the wearer to change the temperature on the skin and / or mucosal surface, so that the wearer can feel cold and refreshing. From the viewpoint of effectively maintaining a moderate cooling effect on the wearer's skin for a long period of time, the region containing the cooling agent is preferably on the non-skin abutting surface side than the front layer 1. At this time, it is not excluded that the front surface layer 1 includes a cold sensation agent, and it is preferable that the region with the highest content of the cold sensation agent is located on the non-skin side than the front layer 1. Moreover, it is preferable that the area | region containing a cold sensation agent is located in the middle part C in plan view of the sanitary napkin 10.

As a member containing a cold sensation agent and being closer to the front layer 1 side than the absorption layer 3, for example, an intermediate fiber layer 4 or a liquid-permeable sheet covering the skin contact surface side of the absorption layer 3 (not shown) Wait.

When the cold sensation agent is contained in the absorption layer 3, it may be contained in any part of the absorption layer 3. However, in consideration of the effective movement of the volatile components of the cold sensation agent to the skin in association with the movement of the air of the section 8 described below, the cold sensation agent is preferably contained on the skin surface side of the absorption layer 3. The "skin surface side of the absorption layer 3" mentioned here refers to a region on the skin surface side when the thickness of the absorption layer 3 is evenly divided into two parts. In this case, as long as a cold-sensing agent is included on the skin side of the absorption layer 3, a cold-sensing agent may also be included on the non-skin side. More preferably, the skin surface side of the absorption layer 3 has a region in which the content of the cold sensation agent is relatively more than that of the non-skin surface side. A region having a relatively large amount of the cold sensation agent may not exist on the outermost surface of the skin surface side as long as it is the skin surface side of the absorption layer 3. Furthermore, when a cold sensation agent is included in the absorbing layer 3, the member that is closer to the front layer 1 side than the absorbing layer 3 may include the cold sensation agent, or may not include the cold sensation agent.

In the absorbing layer 3, it is preferable that the cold sensation agent is contained on the skin surface side of the absorbing layer 3 and the skin surface side is more inward than the widthwise end edges 39. Thereby, the cold sensation agent can be durable inside the sanitary napkin 10, suppress the irritation to the sensitive parts of the skin such as the groin part of the wearer, and more surely cool the skin by using the action of the section 8 described below. Sense given. From this viewpoint, the "area on the skin surface side that is more inward than the widthwise end edges 39" of the absorbent layer 3 means a region near the groin portion of the wearer's skin. Specifically, it is preferably a region which does not include both end edges 39 in the width direction and extends from the center line L in the width direction to the left and right and is in a range of 75% or less of the width of the absorption layer, and more preferably relative to the absorption. Areas with a layer width of 60% or less.

In the region containing the cold sensation agent, it is preferable to have a region where the basis weight of the cold sensation agent is lower than the surroundings at the center in the width direction of the middle portion C of the sanitary napkin 10 (liquid receiving region C1). This can prevent the wearer from having a strong cold feeling in the excretory part which is sensitive to the stimulus. From the viewpoint of suppressing excessive irritation to the skin, the above-mentioned "region containing a cold sensation agent" and the "area with a low basis weight of the cold sensation agent" in this area are preferably on the plane close to the member of the front layer 1 Area that expands in the direction. For example, in the case where the intermediate fiber layer 4 contains a cold sensation agent, it is preferable to have a region where the basis of the cold sensation agent is lower than the surroundings at the center in the width direction of the middle portion C in the planar region of the intermediate fiber layer 4. In the case where the cold sensitizer is contained in the absorbent layer 3, it is preferable to have a cold sensitizer basis weight in the middle of the widthwise center of the middle portion C in the planar region of the outermost surface layer on the skin surface side of the absorbent layer 3. Lower surrounding area.

In the sanitary napkin 10, the cold sensation agent is effectively sent to the skin even if the residual amount is reduced by the action of the section 8 described below, so there is no need to increase the content excessively. Therefore, it is possible to form the same content as before, suppress skin irritation, and effectively maintain a moderate cooling effect for a long time. Specifically, regarding the content of the cold-sensing agent in the entire sanitary napkin 10, in terms of the effect of moderately feeling cold and reducing the feeling of moistness or stickiness, for example, in the case of menthol lactate, it is relative to the product. The length is preferably 4 mg / 100 mm or more, more preferably 5 mg / 100 mm or more, and even more preferably 6.5 mg / 100 mm or more. From the viewpoint of suppressing irritation to the skin, the above content is preferably 13.5 mg / 100 mm or less, more preferably 12.5 mg / 100 mm or less, and even more preferably 11.5 mg / 100 mm or less. In the case where the portion near the front layer 1 or the intermediate fiber layer 4 in the absorption layer 3 at the center in the width direction of the middle portion C has a "region where the basis weight of the cold sensor is lower than the surrounding area", the "cool sensor base The basis weight of the cold-sensing agent having a weight lower than the surrounding area is preferably 85% or less, more preferably 75% or less, and even more preferably 65% or less of the cold-sensitizing agent in other regions.

(Method for measuring the presence or absence of the cold sensor) The solvent can be used to extract the cold sensor from the target member or target part of the absorbent article, and the extraction solution can be analyzed by gas chromatography (GC). The measurement is performed using a hydrogen flame ionization detector (FID) installed in a gas chromatograph, and for example, the measurement can be performed by 7890A manufactured by Agilent technologies. The calibration curve of the relationship between the concentration of the compound constituting the cold sensation agent and the peak area is prepared in advance, and the measurement operation is performed based on the calibration curve. The case where the cold sensation agent contains menthol lactate and / or menthol will be described as an example. Menthyl lactate and / or menthol are extracted from a target member or a target site using methanol as a solvent. Using methanol as a solvent, prepare menthol lactate solution and / or menthol solution at about 3 to 5 stages with different concentrations, calculate the peak area of each concentration based on the GC chromatogram, and use n-pentanol as a standard sample , Make a calibration curve obtained by plotting the peak area of the concentration of the standard sample. By analyzing the extract under the same conditions as the analysis with the calibration curve, the obtained peak area was applied to the calibration curve and the amount of menthol and / or menthol was calculated. In addition, by dividing the amount of menthol lactate and / or menthol obtained by the area of the product site selected in advance, the amount of cold sensation per unit area (basic weight of the cold sensation agent) can be obtained. In addition, by dividing the amount of menthol lactate and / or menthol obtained by the length (mm) in the length direction of the absorbent article and zooming in by 100 times, the average cold dose per 100 m of product length can be obtained . In order to determine the cold-sensing dose of each component or part of the product, the analysis can be performed by decomposing the product in a 5 ° C chamber and taking out the material parts to be measured.

The absorption layer 3 includes a cut-off portion 8. The so-called cut-off portion 8 is a portion where the continuity of the constituent materials of the absorption layer 3 is cut, and is a gap portion without a member. For example, it can be either a slit portion where an elongated cut is made, or a recessed space where a part of the component is pressed and recessed, or a small recessed space where the basis weight of the component is partially formed.

In the present embodiment, the cutting portion 8 is arranged in the form of a slit portion 81 (see FIGS. 1 to 3). The slit portions 81 are arranged in the planar region of the absorption layer 3, and a plurality of the slit portions 81 are dispersedly arranged. The "slit portion" mentioned here can be defined as a cutout portion with a width of 0.5 mm or less, preferably 0.3 mm or less, and more preferably 0.2 mm or less. The “width” of the slit portion 81 refers to the distance (opening width) between the cut members in a direction orthogonal to the longitudinal direction of the slit portion 81 in the plan view of the sanitary napkin 10. The width of the slit portion 81 can be measured with a digital microscope VHX-1000 manufactured by Keyence Corporation under a natural state where the absorbent layer 3 is taken out from the sanitary napkin 10 and placed on a water platform without tension. In this case, the measurement magnification is appropriately adjusted and measured. The slit portion 81 will be described below together with a description of a preferred specific aspect of the absorption layer 3.

As a specific example in the case where the breaking portion 8 is the recessed portion space 82 having a small local basis weight, for example, the absorbing layers 310A and 310B shown in FIGS. 4 (A) and (B) can be cited. These are a fiber accumulation body of a hydrophilic fiber or a mixed fiber accumulation body of a hydrophilic fiber and a superabsorbent polymer material, and have a specific thickness and an uneven shape with a reduced basis weight. The superabsorbent polymer material referred to here is a surface-crosslinked polymer material called SAP (Super Absorbent Polymers) (the same applies hereinafter). Specifically, the absorption layer 310A shown in FIG. 4 (A) has a plurality of block-shaped convex portions 311 on the front layer 1 side (skin surface side), and has a plurality of basis weights between the convex portions 311 and 311. The small recessed space 82 serves as the partition 8. In addition, the absorption layer 310B shown in FIG. 4 (B) has a plurality of block-shaped convex portions 311 and a concave portion space 82 as the cut-off portion 8 on the back surface layer 2 side (non-skin surface side). In FIG. 4 (A), there is a thin film portion 312 on the back layer 2 side that blocks the bottom of the recessed space 82 and connects the convex portions 311 to each other. In FIG. 4 (B), there is a recessed space on the front layer 1 The bottom of 82 blocks and connects the thin film portions 312 of the convex portions 311 to each other.

Furthermore, the partitioning part 8 may be a densified recessed space formed by integrally denting the front layer 1 and the absorption layer 3 toward the back layer 2 side, that is, linear grooves. The linear groove includes a longitudinal groove extending in the longitudinal direction (Y direction) in the middle portion C in a plan view, and a first groove formed in the front portion F and the rear portion R so as to extend in the width direction (X direction), respectively. And the second horizontal groove. The linear grooves can be formed by embossing such as embossing with or without heat (so-called embossing) or ultrasonic embossing in accordance with a conventional method. Although not shown in the linear grooves, the front layer 1 and the absorption layer 3 are pressure-bonded via an adhesive or integrated by thermal fusion or the like. The performance of the combination between the front layer 1 and the absorption layer 3 also includes other layers such as the intermediate fiber layer 4 between the front layer 1 and the absorption layer 3. The front layer is bonded to the other layer, and then the other layer and the absorption layer 3 the situation of joining (combining). Such a linear groove can suppress the diffusion of the liquid in the planar direction of the absorption layer 3 and can effectively prevent the liquid from leaking around the sanitary napkin 10. The width (length in a direction orthogonal to the longitudinal direction) and depth of the linear grooves may be set in the same manner as the linear grooves of such an absorbent article. In addition, the "linear shape" in the linear grooves is not limited to the shape of the grooves (recessed portions) which is a straight line in a plan view and also includes a curve. Each line may be a continuous line or a dotted line. For example, the linear grooves may also include rows formed by embossing of discrete dots.

The cut-off portion 8 is disposed at a position overlapping the region containing the cold sensation agent in a plan view of the sanitary napkin 10. As long as it is in a position overlapping in a plan view, the region where the cut-off portion 8 is disposed and the region containing the cold sensor may be at the same thickness position or at different thickness positions. In consideration of the effect of the partitioning portion 8 on the cold sensation agent described below, it is preferable to include the cold sensation agent in the region where the absorbing layer 3 of the partitioning portion 8 is arranged.

The dividing portion 8 can be located at any position in the thickness direction of the absorption layer 3, can be on the front layer 1 side (skin surface side), or can be from the front layer 1 side to a specific depth, and can also cross the absorption layer 3 The thickness direction exists as a whole. Considering the effect of the partitioning part 8 on the cold sensation agent described below, the partitioning part 8 is preferably arranged at least on the front layer 1 side (skin surface side) of the absorption layer 3.

The cut-off portion 8 is a discontinuous portion of the constituent members of the absorption layer 3, and thus can be a deformation axis of the absorption layer 3. For example, when wearing the sanitary napkin 10, when an external force such as a squeezing force in the width direction of the sanitary napkin 10 or a cutting force in the front-back direction is applied according to the movement of the wearer's body, the absorbent layer 3 can be divided into parts 8 is deformed for the base axis. According to this, according to the deformation mode of the absorbing layer 3, the breaking part 8 can form a space for storing air (e.g., the area shown by the symbol P in Figs. 5 (A) and (B)), and on the other hand can form a space for air movement ( For example, the ventilation path of arrow F) shown in FIG. 5 (A). When the breaking part 8 becomes a ventilation path, the deformation force of the absorption layer 3 functions as a driving force for squeezing air.

At this time, the breaking part 8 is located at a position overlapping with the area containing the cold sensation agent in a plan view, thereby interlocking with the movement of the air caused by the action of the breaking part 8 (for example, arrow F shown in FIG. 5 (A)). , The volatile components of the cold sensor are also easy to move. That is, if the air comes in and out during the movement of the absorption layer 3, the volatile components of the cold sensation agent stored inside or between the components of the absorption layer 3 are pushed up to the wearer's skin surface, effectively exhibiting a cold feeling effect. In particular, when the remaining content of the cold sensation agent keeps decreasing after the passage of time, the volatile components of the cold sensation agent can be sufficiently fed to the skin surface. For example, in the case where the cold sensation agent has leaked out and remains deep in the absorption layer 3, the volatile components of the cold sensation agent can be actively sent from the inside of the absorption layer 3 to the skin surface. Thereby, the tampon 10 can effectively maintain the cold feeling effect for a longer time. Furthermore, on both sides of the absorbent layer 3, as compared with the leak-proof back surface layer 2, the increase in the amount of air in and out of the liquid-permeable front layer 1 makes the above-mentioned push on the skin surface more effective.

5 (A) and (B) schematically show the deformation of the absorbing layer 3 with the breaking portion 8 as an axis, and the actual deformation is not limited to this. In addition, the movement of the air of the arrow F shown in FIG. 5 (A) and the formation of the air storage area shown by the symbol P of FIG. 5 (B) are not limited to scenes that differ in time, but may also be configured in Different positions in the area of the breaking section 8 are generated at the same time. Furthermore, the area where the air is stored as shown by the symbol P is not limited to the vicinity of the cut-off portion 8, but may be generated in the space between the layers as described below. The air storage in the space between the layers will be generated regardless of whether the deformation part 8 is the axis. The volatile components of the air and the cooling agent are squeezed toward the skin surface by the deformation of the section 8 as the axis. Out.

From the viewpoint of imparting a better feeling of coldness to the skin, the cut-off portion 8 is preferably disposed in a region more inward than the widthwise both-end edges 39 of the absorbent layer 3. The "area on the inner side of the absorbent layer 3 than the widthwise end edges 39" refers to a region near the groin of the wearer's skin. Specifically, it is preferably a region that does not include both end edges 39 in the width direction and symmetrically expands from the center line L in the width direction to the left and right, and is more preferably relative to a range of 85% or less of the width of the absorption layer. In the area where the width of the absorption layer is 70% or less. From the viewpoint of suppressing the exudation of the cold sensation agent, it is more preferable that the division portion 8 arranged on the outermost side in the width direction of the absorption layer 3 is arranged on the outer side in the width direction than the region containing the cold sense agent. By giving priority to the cold sensation by using the above-mentioned disjoint portion 8, it is possible to suppress irritation to sensitive parts of the skin such as the groin part of the wearer, and make the wearer feel a better cold sensation. In addition, the width of the absorption layer 3 here means the minimum width of the middle portion C of the absorption layer 3. Therefore, when the absorption layer 3 is rectangular, the width of the absorption layer 3 may also be the width direction length of any portion in the width direction of the absorption layer 3 in the middle portion C. On the other hand, when the width of the front and rear portions is wide and the width of the middle portion C is narrow, such as an hourglass shape, the width direction length of the narrowest portion of the middle portion C becomes the width of the absorbing layer 3. From the viewpoint of imparting a better feeling of coldness to the skin, it is preferable that the cut-off portion 8 is arranged at least in a region including the middle portion C in the longitudinal direction of the absorption layer 3.

From the viewpoint of suppressing the irritation to the sensitive part of the skin, it is preferable that the side sheet 5 extends from the widthwise outer side of the absorbent layer 3 and the widthwise end edges 39 of the absorbent layer 3 and extends in the longitudinal direction . In addition, it is preferable that the inner side end of the side sheet 5 in the width direction be located at the outer side in the width direction more than the cutout portion 8 located at the outermost side in the width direction at least in the middle portion C. This allows the side sheet 5 to suppress the volatile components of the cold-sensing agent from directly stimulating the vicinity of the groin of the wearer even when the cold-sensing agent passes through the break portion 8 and oozes out. At this time, from the viewpoint of more effective suppression of skin irritation, it is preferable that the side sheet 5 has lower air permeability than the front layer 1. The air permeability can be appropriately set by the method used for such an article. For example, when the side sheet 5 includes a non-woven fabric, the distance between the fibers can be narrowed or the oil agent used can be selected to suppress air permeability. The air permeability is preferably measured in accordance with "6.8.2 Gurley form" of JIS (Japanese Industrial Standards) L1913. The air permeability of the side sheet 5 is lower than that of the front layer 1. degree. Furthermore, when the side sheet is small and cannot be measured by the Gurley form, the side sheet is attached to a non-breathable film having an opening smaller than its size (preferably Measured for OHP (Overhead Projector (Projector) film, etc.) manufactured by KOKUYO, and converted the opening area value to the area (642 mm ² ) specified by the Gurley format.

The intermediate fiber layer 4 is preferably located between the front layer 1 and the absorbing layer 3 and is located at a position overlapping the region containing the cold sensation agent in a plan view. Thereby, on the non-skin surface side of the front layer 1, the space between the layers storing the components volatile by the cold sensation agent is increased. In addition, by interposing the intermediate fiber layer 4, the cold sensation agent can be made durable and impart a moderate cold sensation. In this case, the cold sensation agent may be included in the intermediate fiber layer 4 or may not be included in the intermediate fiber layer 4. From the viewpoint of effectively maintaining the cold sensation effect of the cold sensation agent for a long period of time, it is preferable that the region with the largest content of the cold sensation agent is on the absorption layer 3 (especially the skin surface side of the absorption layer 3).

The intermediate fiber layer 4 is preferably joined to the front layer 1 by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. Similarly, the intermediate fiber layer 4 is preferably bonded to the absorbent layer 3 by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. The discontinuous arrangement of the adhesive in the width direction can be performed by various methods used for such articles. Examples include intermittent application of hot-melt type adhesives in a linear shape, a spiral shape, an Ω shape, a mountain top shape, or the like. At this time, various devices such as a slot coating gun, a spiral spray gun, a spray gun, and a spot coating gun can be used for coating. Thereby, the said adhesive agent can suppress the spread of a cold-sensing agent to the width direction outer side, and can maintain the cold-sensing effect of a desired position. From the viewpoint of ensuring liquid absorption (liquid permeability), the ratio of the area where the above-mentioned adhesive is disposed to the skin surface side surface area of the absorption layer 3 is preferably 20% or less, more preferably 15% or less, and It is preferably 10% or less. From the viewpoint of suppressing the diffusion of the cold sensation agent to the outside in the width direction, the ratio of the coating width at the middle portion C of the adhesive to the width of the absorption layer is preferably 45% or more, more preferably 60. % Or more, and more preferably 75% or more. In addition, the "application width of an adhesive agent" mentioned here is a total of the width | variety of the adhesive agent of each application part when an adhesive agent is arrange | positioned intermittently in the width direction.

Furthermore, the intermediate fiber layer 4 is preferably a nonwoven fabric containing thermoplastic fibers. Since the intermediate fiber layer 4 is such a non-woven fabric, it has a higher liquid diffusibility. With this, regardless of whether the cold sensation agent is contained in the intermediate fiber layer 4 or the skin surface side of the absorption layer 3, it is possible to suppress the cold sensation agent from oozing toward the non-skin surface side in the thickness direction, and It is easy to maintain the cold feeling effect for a longer time. The intermediate fiber layer 4 preferably has a higher fiber density than the front layer 1. With the dense density effect, the amount of the cooling agent moving toward the front layer 1 can be controlled on the surface of the intermediate fiber layer 4, and the volatile component of the cooling agent is preferentially removed from the breaking section by the action of the breaking section 8. 8 Feed into the skin. As a result, excessive irritation to the skin can be suppressed, and a cold feeling can be maintained for a long time.

As the absorbent layer 3, as long as the above-mentioned function of the cut-off portion 8 is exerted, various forms of those generally used as absorbent articles can be adopted without particular limitation. For example, it is also possible to cover a fiber accumulation body of hydrophilic fibers or a mixed fiber accumulation body of hydrophilic fibers and a superabsorbent polymer material with a hydrophilic covering sheet. The absorbent sheet may include a thin absorbent sheet, and the absorbent sheet may be formed by sandwiching and fixing a highly absorbent polymer material between two sheet-like fiber layers including hydrophilic fibers. When forming an absorbent sheet, the superabsorbent polymer can be integrated by using the adhesive force exhibited by wetting, or by adding an adhesive such as an adhesive or an adhesive fiber. The production can be performed by various methods generally used, and can also be performed by either a wet method or a dry method. The absorptive sheet has a thickness of 3.0 mm or less, and a highly absorbent polymer material is dispersedly arranged in the plane direction of the sheet, so it does not easily colloidal and has a high absorptive power. Examples thereof include those described in paragraphs [0019] to [0131] of Japanese Patent Laid-Open No. 8-246395.

The absorbent layer 3 preferably contains an absorbent sheet including the above-mentioned highly absorbent polymer material and hydrophilic fibers. Thereby, the thickness of the absorption layer 3 can be reduced, and the cut-off portion 8 can be easily arranged at a desired position, and the cold feeling can be enhanced at the desired position.

As the absorbing layer 3, it is preferable that the volatile component of the cold-sensing agent be sent to the skin surface more effectively by the dividing portion 8 to have a layered structure in the thickness direction. If the absorption layer 3 has a laminated structure, it is easy to store the components evaporated from the cold sensation in the space between the layers regardless of whether the absorption layer 3 is deformed or not. In addition, when the cold-sensing agent oozes out into the absorbing layer 3, movement in the same layer easily occurs, and the amount of the cold-sensing agent oozing out in the thickness direction can be suppressed. Thereby, the components volatile from the cold sensation agent can be stored between the layers near the skin surface side in the absorption layer 3. The components volatile from the cold sensation agent fully stored in this way can be sent to the skin surface through a ventilation path, so that a person can feel a moderate cold sensation for a long time. The ventilation path is through the absorption layer 3 It is deformed to open and close the layers, and is formed by the cut-off portion 8.

From the viewpoint of improving the opening and closing properties between the layers, the absorbent layer 3 is more preferably a structure in which the absorbent sheet is laminated. In addition, by this, it is easy to install the cut-off portion 8 at a desired position of the absorption layer 3, and the cold feeling given to the wearer can be further controlled with high accuracy.

Next, a preferable specific structure of the absorbing layer 3 and a preferable configuration of the breaking portion 8 in the absorbing layer 3 will be described.

The absorbent layer 3 shown in FIGS. 2 and 3 includes an absorbent sheet including the above-mentioned superabsorbent polymer and hydrophilic fibers. The absorbent sheet has a laminated structure. More specifically, the absorbent layer 3 has a main absorbent sheet 31 and a central absorbent sheet 32 arranged on the non-skin surface side of the main absorbent sheet 31, and has two folded absorbent sheets Laminated structure. Thereby, the cold sensation agent is easily diffused in the surface direction of the folded sheet layer, and the cold sensation agent can be more effectively suppressed from oozing out toward the non-skin surface side of the absorption layer 3 in the thickness direction.

The main body absorbent sheet 31 has a folded structure in which both ends in the width direction are overlapped on the back surface layer 2 side and folded in three. The main body absorbent sheet 31 has a length from the middle portion C to the front portion F and the rear portion R, and is formed in an outer shape of the absorption layer 3. The central absorbent sheet 32 has a folded structure in which both ends in the width direction are overlapped on the front layer 1 side and folded in three. The central absorbent sheet 32 is in a folded state, has a narrower width than the folded main absorbent sheet 31, and has a shorter length in the longitudinal direction than the main absorbent sheet 31, and is arranged in the middle. The center of the width direction of the portion C. The central absorbent sheet 32 is housed inside the folded structure of the main absorbent sheet 31. In this configuration, the central absorptive sheet 32 is on the non-skin side rather than the skin side of the main absorptive sheet 31, and is arranged at least closer to the non-skin than the skin side portion 31A of the main absorptive sheet 31. Face side.

The absorptive layer 3 has a central absorbent sheet 32 in the above-mentioned laminated structure, and thus, at the center in the width direction of the middle portion C, is provided as an overlapping portion of the main absorbent sheet 31 and the central absorptive sheet 32 and has a relatively peripheral surface.厚 之 高 基 重 部 33。 Thick high base portion 33. At the position of the high basis weight portion 33, the sanitary napkin 10 is easy to fit on the skin surface of the wearer, and the wearer is more likely to feel a cold feeling, so it is better. In addition, the absorbing layer 3 can suppress the bleeding amount of the cold sensation agent in the thickness direction between the layers by the laminated structure of the sheet at the high basis weight portion 33. Thereby, in the region of the middle portion C, the components volatile from the cold sensation agent can be stored at the position relatively close to the skin of the absorption layer 3 and sent to the skin, which is preferable.

In the absorbent layer 3, the ratio (H2 /) of the thickness (H2) of the portion other than the high basis weight portion 33 to the thickness (H1) of the high basis weight portion 33 from the viewpoint of using the skin surface without discomfort. H1) is preferably 1/5 or more, and more preferably 1/3 or more. From the viewpoint of conformability, the above ratio (H2 / H1) is preferably 4/5 or less, and more preferably 2/3 or less. In addition, in the absorbent layer 3, from the viewpoint of preventing the liquid from diffusing at the time of absorption of excretion liquid, the basis weight (M2) of the portion other than the high basis weight portion 33 is larger than that of the basis weight (M1) of the high basis weight portion 33. The ratio (M2 / M1) is preferably 1/4 or more, and more preferably 1/3 or more. From the viewpoint of preventing wrinkles caused by the difference in rigidity between the high basis weight portion and the low basis weight portion, the above-mentioned ratio (M2 / M1) is preferably 7/8 or less, more preferably 2/3 or less.

The folded structure of the central absorbent sheet 32 is not limited to that shown in FIG. 2, and various structures can be adopted. For example, it may be a fold as shown in FIGS. 6 (A) to (D). FIG. 6 (A) shows a state in which both end portions in the width direction of the central absorbent sheet 32 are folded back toward the skin surface side and the non-skin surface side to be folded into an S shape. Fig. 6 (B) shows a state of being folded in half in the width direction. FIGS. 6 (C) and 6 (D) show a state of being folded in such a manner that the lengths of the parts folded in three directions in the width direction are equal.

The folding structure of the main body absorbent sheet 31 is not limited to that shown in FIG. 2, and various structures can be adopted. For example, it may be the same as FIGS. 6 (A) to (D) shown as the folded structure of the central absorbent sheet 32. It is also possible to have a structure in which two sheets divided into a skin surface side and a non-skin surface side are laminated. Furthermore, the present invention is not limited to the case where the central absorbent sheet 32 is enclosed inside the folded structure of the main absorbent sheet 31, and may be a non-skin that is not enclosed within the folded structure of the main absorbent sheet 31. An aspect of the surface side laminated central absorbent sheet 32. However, if the central absorbent sheet 32 is contained inside the folded structure of the main absorbent sheet 31, it is easier to store the volatile components of the cold sensation agent. Speak better.

Regardless of which layer structure the absorbent layer 3 has, it is preferable that the overlapping portions of the absorbent sheet are not bonded. Thereby, the space between the layers of the absorption layer 3 is easily formed, and the opening and closing properties between the layers are improved. As a result, the introduction of the volatile components of the cold-sensing agent through the cut-off portion 8 into the skin can be more easily exhibited.

In such an absorbent layer 3, a plurality of cutting portions 8 are arranged in the form of slit portions 81. The slit portion 81 is formed so as to penetrate the absorption layer 3 in the thickness direction. In the high basis weight portion 33, the slit portion 81 penetrates a laminated portion formed by laminating the main absorbent sheet 31 and the central absorbent sheet 32. In the portion other than the high basis weight portion 33, the slit portion 81 penetrates the entire laminated portion of the main body absorbent sheet 31. This makes it possible to more reliably generate the deformation of the absorbent layer 3 with the slit portion 81 as the axis and the opening and closing of the layers, regardless of the high basis weight portion 33 or the portion other than the high basis weight portion 33.

The slit portion 81 is preferably arranged at least in a region including the intermediate portion C in the longitudinal direction when the absorption layer 3 is viewed in plan. Further, it is preferable that the slit portion 81 is located on the outermost side in the width direction as described above, and is located on the inner side of the absorbent layer 3 than the widthwise end edges 39 as described above, and is disposed on the outer side in the width direction than the region containing the cold sensor .

The slit portion 81 has a length extending in the longitudinal direction in a plan view of the absorption layer 3, and a plurality of the slit portions 81 are arranged in the longitudinal direction. A plurality of the vertical alignments are arranged in the width direction. The arrangement pitches of the slit portions 81 in each row are arranged so that the rows of the slit portions 81 adjacent to each other in the width direction are staggered in the longitudinal direction. Hereinafter, each row in which the slit portions 81 are arranged in the vertical direction is referred to as a slit portion row (in the case where each slit portion row is distinguished, it is referred to as 85A, 85B, 85C, etc.). The area in the plane direction where the slits are arranged is referred to as a slit portion region 86.

The longitudinal interval L2 between the slit portions 81 and 81 is preferably equal to or less than the length (length in the longitudinal direction) L1 of the slit portion 81 (see FIGS. 7 (A) to (C)). By making the longitudinal interval L2 between the slit portions 81 as small as possible, the effect of suppressing the cooling sensation agent from oozing out in the width direction of the absorption layer 3 is further improved. From the viewpoint of suppressing the bleeding of the cold sensation agent, the interval L2 between the slit portions 81 and 81 means the length of the continuous portion of the slit portion region 86 without the cut of the absorbent layer 3 as a whole. When the slit portion region 86 has a plurality of slit portion rows 85, the entirety is regarded as one row and the interval L2 is grasped.

As shown in FIG. 7 (A), when one slit portion row 85A is arranged, it is preferable that the interval L2 between the slit portions 81 and 81 is equal to or less than the length L1 of the slit portion 81 in the longitudinal direction (L2 ≦ L1). . From the viewpoint of maintaining the strength of the absorbent layer 3 and preventing wrinkles, it is preferable that the interval L2 exceeds 0 (zero) so that the slit portions 81 arranged in a row are not connected to each other.

In addition, as shown in FIG. 7 (B), when the side-by-side slit portion rows 85A, 85B, and 85C are arranged, it is preferable that the slit portion rows are formed between the slit portions 81 and 81 adjacent to each other in the width direction. The interval L2 in the longitudinal direction is equal to or less than the length L1 in the longitudinal direction of the slit portion 81 (L2 ≦ L1). The vertical interval L2 between the slit portions 81 and 81 mentioned here means in other words when trying to project one slit portion line to another slit portion line (for example, to project the slit portion line 85A to the slit portion lines 85B and 85C). Interval L2. Therefore, with regard to one slit portion row, even if there is a case where the longitudinal interval L2 between the slit portions 81 and 81 exceeds the longitudinal length L1 of the slit portion 81, the above conditions may be satisfied. Thereby, it is possible to suppress the exudation of the cold sensation agent in the width direction by using the slit portion rows in cooperation with each other. In this case, there may be a portion where the interval L2 between the slit portions 81 and 81 adjacent to each other in different rows becomes 0 (zero). In particular, as shown in FIG. 7 (C), it is preferable to set all the longitudinal intervals L2 of the slit portions 81, 81 adjacent to each other in different rows to 0 (zero). Thereby, in the slit part region 86, the slit part 81 exists on any imaginary line that crosses in the width direction with respect to the longitudinal direction, and the effect of suppressing the exudation in the width direction of the cold sensor is further improved.

The absorption layer 3 preferably includes a polymer-rich region 35 and a fiber-rich region 36 as shown in FIG. 8 in a cross-section. Specifically, FIG. 8 shows a state in which a polymer-enriched region 35 and a fiber-enriched region 36 are formed as a unitary structure in a thickness cross-sectional area of a part of the folded absorbent sheet constituting the absorbent layer 3. The polymer-rich region 35 and the fiber-rich region 36 are based on the mass ratio of the superabsorbent polymer material 37 relative to the total mass of the mass of the superabsorbent polymer material 37 and the mass of the hydrophilic fiber (hereinafter referred to as " The mass ratio of the superabsorbent polymer material 37 ") is prescribed. Compared with the fiber-enriched region 36 in the polymer-enriched region 35, the mass ratio of the high-absorbent polymer material 37 is relatively high. On the other hand, the mass ratio of the superabsorbent polymer material 37 in the fiber-rich region 36 is relatively lower than that in the polymer-rich region 35.

From the viewpoint of diffusibility and retention of body fluids, the thickness of the fiber-rich region 36 is preferably 1/10 or more and 7/10 or less, especially 1/3 or more and 2 with respect to the entire thickness of the absorption layer 3. / 3 or less. In addition, in the case of the structure of the absorption layer 3 where the boundary between the polymer-enriched region 35 and the fiber-enriched region 36 is not clear, as in the integrated structure, when the thickness is equally divided into two parts, one thickness is divided. Comparing the area with another thickness area, the relatively large mass ratio of the superabsorbent polymer material is referred to as the polymer-enriched area 35, and the relatively large mass ratio of the hydrophilic fibers is referred to as the fiber-enriched area 36. .

According to the above configuration, the absorbing layer 3 is located in the thickness direction of the absorbing layer 3, and includes a polymer-rich region 35 in which free water is relatively small after absorption and a fiber-rich region 36 in which free water is relatively remaining, and has The cold sensation is delivered to different parts of the skin. Specifically, since the polymer-rich region 35 has relatively little free water, it provides an environment where the cold sensation agent can be moderately volatilized. In this environment, the components of the cold sensation agent volatilized in the polymer-rich region 35 are sent to the skin by the action of the slit portion 81 (the cut-off portion 8). On the other hand, the fiber-rich region 36 has a large amount of free water. Therefore, when the cold sensation agent is used together with a delivery system for transporting water-soluble capsules or chemical agents, the liquid can be applied to the skin according to the movement of the liquid. Cold sensation. In addition, the fiber-enriched region 35 can suppress the volatilization of the cooling agent. Thereby, by preferentially including any one of the polymer-enriched region 35 and the fiber-enriched region 36 with a cold-sensing agent, it is possible to better control the liquid absorbing property, the cold-sense imparting property, and the like.

If the polymer-enriched region 35 contains a cold sensation agent, and the polymer-enriched region 35 is disposed on a non-skin side than the fiber-enriched region 36, the fiber-enriched region 36 and the region can be used. The free water in the medium moderately inhibits the components volatile from the cooling agent from diffusing in the polymer-rich region 35. This makes the cold feeling effect lasting. At this time, the slit portion 81 is preferably arranged to penetrate the fiber-rich region 36 and the polymer-rich region 35 from at least the skin surface side of the absorbent layer 3.

On the other hand, the fiber-rich region 36 has a region containing a cold sensation agent. If the region containing the cold sensation agent is disposed on the frontmost layer 1 side (skin surface side) of the absorption layer 3, the cold feeling is easily felt. . In this case, the fiber-enriched region 36 suppresses volatilization of the cold sensitizer. The content of the cold sensation agent can be reduced near the front layer 1 and the irritation can be suppressed, so that the cold sensation effect can be controlled in a better manner, which is preferable.

The polymer-enriched region 35 and the fiber-enriched region 36 shown in FIG. 8 may be stacked on the sheet thickness, and may exist in the folded body absorbent sheet 31 and the central absorbent sheet 32 of the absorbent layer 3. The whole may exist in part. In addition to the configuration shown in FIG. 8, the polymer-rich region 35 and the fiber-rich region 36 may be disposed at different positions in the folded structure of the absorbent sheet constituting the absorbent layer 3. From the viewpoint of suppressing excessive irritation to the skin and maintaining a moderate cooling effect for a long period of time, it is preferably laminated in the thickness direction and arranged on the same portion of the absorbent sheet. It is preferable that the sheet portion (the skin surface side portion 31A of the body absorbent sheet 31) at least on the front surface layer 1 side (skin surface side) of the absorbent layer 3 is enriched in accordance with the fiber-enriched region 36 and polymer The areas 35 are sequentially stacked.

The formation of the polymer-rich region 35 and the fiber-rich region 36 in the absorbent sheet can be performed, for example, as follows. First, a wet fibrous web is prepared by wet papermaking of an aqueous slurry containing hydrophilic fibers. The aqueous slurry may also include hot-melt adhesive fibers, paper reinforcing agents, and the like. Spread the superabsorbent polymer material on the wet fiber web to form a state where the superabsorbent polymer enters between the fibers. This portion becomes the polymer-rich region 35 in the absorbent sheet. Then, on the surface on which the superabsorbent polymer is dispersed, a fiber assembly containing hydrophilic fibers and hot-melt adhesive fibers or paper reinforcing agents is laminated and dried and integrated to obtain an absorbent sheet. The portion of the fiber assembly that is laminated thereafter becomes the fiber-enriched region 36. When the absorbent sheet is produced by a dry method, the layer in which the superabsorbent polymer material is dispersed may be papermaking, dried paper, or a non-woven fabric produced by various methods. From the viewpoint of making it easy for the superabsorbent polymer material to enter the space between the fibers, for example, a fluffy paper subjected to a wrinkle treatment, a hot air nonwoven fabric, and the like are preferred. In this case, it is also possible to join the superabsorbent polymer material with the constituent fibers that become the layer of the polymer-rich region 35 and the joint that forms the layer that becomes the polymer-rich region 35 and the layer that becomes the fiber-rich region 36 A hot-melt adhesive or a water-soluble adhesive is used. Furthermore, the fiber-enriched region 36 may be formed by laminating the polymer-enriched region 35 or blowing a hydrophilic fiber.

Next, a preferred method for manufacturing the absorbent article of the present invention will be described. As a preferred manufacturing method, in the manufacturing method of an absorbent article generally used, the formation step of the absorbent layer 3 includes the following steps. That is, it includes: step (S1), which applies a cold sensant across a specific width of the raw material member that becomes the absorbing layer; and step (S2), which involves applying a cold sensant across the surface of the raw material member that becomes the absorbing layer. A wider width of the cloth is provided with a region of the cut portion extending in the longitudinal direction of the absorption layer.

In step (S1), the width of the applied cold sensitizer is preferably a region on the inner side of the above-mentioned absorption layer 3 that is closer to both ends in the width direction. More preferably, it is a region with a width of, for example, 75% or less with respect to the width of the absorption layer 3. In a case where the raw material member that becomes the absorbent layer 3 is an absorbent sheet member, there are cases where the laminated absorbent sheet is folded and formed as in the following step (S3). At this time, the width of one surface of the laminated absorbent sheet becomes the width of the absorbent layer 3 described above. In step (S1), the cold sensitivity agent is prepared and applied as a cold sensitivity solution (coating solution) mixed with a solvent. As the solvent, generally available users can be used, and examples thereof include dipropylene glycol. In step (S2), the width of the region where the cut-off portion 8 is formed is preferably a region wider than the width of the cold-sensitive agent application and the above-mentioned absorption layer 3 is further inward than the widthwise end edges 39. It is more preferable that the region is in a range of, for example, 85% or less with respect to the width of the absorption layer 3. In addition, in any of the steps (S1) and (S2), it is preferable to perform processing on a region that becomes at least the middle portion C of the raw material member that becomes the absorption layer 3.

Either step (S1) or step (S2) may be performed first. However, if step (S1) is performed after step (S2), it is more preferable to suppress the diffusion of the cold sensation agent toward the both end edges 39 in the width direction.

The step (S2) is preferably a step of forming a cut (slit portion 81) as the breaking portion 8. This makes it possible to form the breaking portion 8 with a desired arrangement and depth accuracy. More specifically, the raw material member that becomes the absorbent layer is an absorbent sheet member, and it is assumed that the absorbent sheet is folded and has a wider width than that of the absorbent layer 3. A plurality of cutouts (slit portions 81) are provided in a specific area of the absorbent sheet in a dispersed manner in the plane direction. As shown in FIG. 3, the slits provided in the absorbent sheet preferably have a length extending in the longitudinal direction of the absorbent layer 3, and a plurality of slits are arranged in the longitudinal direction. More preferably, the slits are arranged in the longitudinal direction of the slits in the absorbent layer. A plurality of layers 3 are arranged in the width direction. At this time, as described above, it is more preferable that the interval between the slits arranged in the longitudinal direction is equal to or less than the length of the slits.

The cut (slit portion 81) can be formed by a method generally used for such an article. For example, a slit can be formed using a cutting device including a cutting roller in which a cutting edge extending in the circumferential direction is dispersedly disposed on the roller circumferential surface in the roller circumferential direction and the roller axial direction, and an anvil roller (not shown) correspondingly arranged示). The cutting blade has a circumferential length corresponding to a longitudinal length of the cut (slit portion 81). The cutting blades are arranged on the peripheral surface of the roller, and are distributed in accordance with the desired arrangement of the cutouts (slit portions 81). The depth of the cut can be set according to the gap between the cutting roll and the anvil roll, the size of the cutting blade, and the like.

Furthermore, when the raw material member which becomes the absorption layer 3 is an absorbent sheet member, it is preferable to include the following steps. That is, it is preferable to include step (S3), which is performed after step (S1) and step (S2), and the absorbent sheet member is placed at a widthwise end more than the position where the cooling agent is applied. It is folded outward to form a laminated absorbent sheet. Thereby, the absorbent sheet 3 which becomes a laminated structure after the absorbent sheet is folded is obtained. Since the widthwise end of the colder susceptor coating position is folded more outward, as described above, it is preferable to include the cold sensant in the region of the absorbent layer 3 that is more inward than the widthwise end edges 39. In addition, it is preferable to fold the absorbent sheet in step (S3), thereby suppressing excessive bleeding in the width direction of the cold sensation agent during the manufacturing process. As the absorbent sheet is further folded into a laminated structure, as described above, it becomes an absorbent article that can maintain the moderate cooling effect on the skin by using the function of the cut-off part for a longer period of time and effectively maintain it. Better.

In step (S3), it is further preferable that the position in the width direction of the folded portion of the absorbent sheet is set to be further outside than the width direction end of the region of the divided portion 8.

The laminated structure in which the absorbent sheet is folded can be in various forms such as half-folding and tri-folding. As a tri-fold, it is preferable that the width direction both ends of an absorbent sheet overlap. Thereby, the storage of the volatile components of the cold sensation agent can be easily formed, and the feeding of the skin to the skin by the cutting portion 8 can be made more effective. In this case, it is more preferable that the cold-sensitive agent-coated surface of the absorbent sheet is folded outward. In the case where the absorbent sheet has the polymer-rich region 35 and the fiber-rich region 36 as described above, it is more preferable to apply a cold sensation agent to the fiber-rich region 36 and apply a cold-sensing agent to the fiber-rich region 36. The area coated with the cold sensation agent was set to the outside and folded.

In addition, as the absorbent sheet, plural kinds of sheets having different widths may be used. For example, two types of absorbent sheets having different widths may be used. As shown in FIG. 2, the central absorbent sheet 32 is contained inside the folded structure of the main absorbent sheet 31. At this time, the cold sensation agent in step (S1) may be applied to any one of the absorbent sheets. However, in terms of suppressing the exudation of the cold sensation agent in the thickness direction and maintaining the cold sensation effect achieved by the action of the cut-off portion 8 for a long period of time, it is more preferable to be a bulk absorbent sheet. The wide absorbent sheet of the material 31 is coated with a cold-sensitive agent.

On both sides of the absorbent layer 3 obtained as described above, the front layer 1 and the back layer 2 cut to a specific size are laminated and bonded to produce an absorbent article. At this time, if necessary, the intermediate fiber layer 4 and the side sheet 5 are formed into a specific size and shape and laminated. In addition, various squeezing processes such as a leak-proof groove may be performed.

The forming material constituting the components of the sanitary napkin 10 can be used by users of such articles without any particular restrictions.

As a cold sensation agent, various chemical agents can be used that do not need to irritate the wearer's skin and / or mucosal surface temperature sensor to change the temperature on the skin and / or mucous membrane surface, so as to deliver refreshment to the wearer. Examples thereof include those described in paragraphs [0006] to [0086] of Japanese Patent Laid-Open Publication No. 2015-12918, such as a cyclohexyl derivative, a cyclohexanol derivative, and formamide. Among them, water-insoluble or water-insoluble ones are preferred from the viewpoints of refreshment, quick-actingness, and durability caused by fragrance. The water-insoluble or water-insoluble cold sensation agent is difficult to migrate with the body fluid toward the non-skin surface side, so the cold feeling is easy to continue. The water-insoluble or water-insoluble ones are preferably menthol lactate and menthol. The "water-insoluble or water-insoluble" mentioned here refers to a solubility of 1 g or less to 25 ° C water at 1 L, and in particular, the "water-insoluble" refers to 1 g of water at 25 ° C at 1 L The following solubility. The cold sensation agent can be contained in the tampon 10 by various methods. For example, it may be contained in the sanitary napkin 10 in a state of being dissolved in a solvent, or may be contained in the sanitary napkin 10 without using a solvent. In addition, the cold sensation agent may be included in the sanitary napkin 10 as it is enclosed in a delivery device such as a microcapsule. As the solvent, various solvents generally used can be used. Examples include dipropylene glycol.

As a cold sensation agent, the cold sensation effect is felt quickly after being worn, is relatively mild, and in terms of improving durability, it is particularly preferable to include menthol and menthol lactate. From the same viewpoint, the content of menthol and menthol lactate is based on the former / the latter mass ratio, preferably 0.01 or more, more preferably 0.02 or more, and still more preferably 0.2 or less, and more preferably 0.15 or less.

Examples of the hydrophilic fibers constituting the absorbent layer 3 include those obtained by subjecting a hydrophobic fiber to a hydrophilic treatment, and those that are hydrophilic in nature. Particularly preferred are those which are hydrophilic in nature and have water retention properties. Examples of the latter hydrophilic fibers include natural fibers, cellulose-based regenerated fibers, and semi-synthetic fibers. As the hydrophilic fiber, pulp and mash are particularly preferable, and pulp is more preferable. Furthermore, fluffy cellulose fibers obtained by crosslinking cellulose fibers intramolecularly and / or intermolecularly, or fluffy cellulose fibers obtained by mercerizing wood pulp can be used. Examples of the pulp include natural cellulose fibers such as coniferous kraft pulp or broadleaf kraft pulp, wood pulp, kapok pulp, and straw pulp, but are not limited thereto. These pulps can be used singly or in combination of two or more.

As the superabsorbent polymer material 37 constituting the absorbent layer 3, for example, water obtained by polymerizing a water-soluble ethylenically unsaturated monomer obtained by adding a cross-linking agent as a main component may be used. Gel material. In addition, examples include polyethylene oxide, polyvinylpyrrolidone, cross-linked products of sulfonated polystyrene and polyvinylpyridine, saponification of starch-poly (meth) acrylonitrile graft copolymers, and starch-poly (Meth) acrylic acid graft copolymers, and hydrolysates of starch-poly (meth) acrylate graft copolymers. These superabsorbent polymer materials may be used singly or in combination of two or more kinds. As the superabsorbent polymer material, those that can absorb and maintain 20 times or more of their own weight, especially 50 times or more of pure water, and those that can gel are preferred. As the shape of the superabsorbent polymer material 37, various shapes used for the absorbent layer 3 can be used without particular limitation. Examples thereof include a spherical shape, a granular shape, a fibrous shape, a bag shape, and a block shape.

As the front layer 1, various sheets having liquid permeability can be used. In consideration of the superior touch of the skin, a hydrophilic nonwoven fabric is preferred, a heat-bonded nonwoven fabric is more preferred, and a hot-air nonwoven fabric is particularly preferred. The fibers of the non-woven fabric constituting the front layer 1 are thermoplastic resin fibers subjected to hydrophilization treatment, and the fibers are preferably three-dimensionally crimped fibers such as 2 times of crimping or 3 times of crimping. Specifically, the fibers of the non-woven fabric constituting the front layer 1 are made of polyethylene, polypropylene, polyester, nylon, and the like, and they are cut to a specific length to form short fibers by coating. Hydrophilization with various hydrophilizing agents. As the hydrophilizing agent, various alkane sulfonates represented by α-olefin sulfonates, acrylates, acrylates / acrylamides copolymers, esters amines, esters amine salts, polyethylene glycols, and Hydrophilization treatments of commonly used hydrophilicizing agents such as derivatives, water-soluble polyester resins, various silicone derivatives, various sugar derivatives, and mixtures thereof.

As the back surface layer 2, various sheets having leakproofness can be used. For example, a non-moisture-permeable or moisture-permeable film can be used alone, or a film obtained by bonding a film with a nonwoven fabric, and a water-repellent nonwoven fabric (SMS (Spunbond-meltblown-Spunbond), or spunbond-meltblown-spunbond) or SMMS (Spunbond-meltblown-meltblown-Spunbond, spunbond-meltblown-meltblown-spunbond), etc.). In terms of cost or matching with an anti-offset adhesive, it is best to use a separate non-moisture-permeable film as a leakage preventing material.

The intermediate fiber layer 4 is preferably one having hydrophilicity and excellent liquid diffusibility. Examples include nonwoven fabrics containing thermoplastic fibers. As the non-woven fabric, a non-woven fabric obtained by various manufacturing methods can be used. For example, a hot-air method can be used on a fibrous web obtained by a carding method or an air spinning method to form a hot-air non-woven fabric having thermal fusion points between fibers, and a hot rolling method can be used to form fibers on a fibrous network obtained by a carding method. Various non-woven fabrics such as hot-rolled non-woven fabrics, hot-embossed non-woven fabrics, spunlace non-woven fabrics, needle-punched non-woven fabrics, and resin-bonded non-woven fabrics that are thermally fused to each other.

The side sheet 5 is preferably a water-repellent nonwoven fabric, and can be used in nonwoven fabrics, spunbond nonwoven fabrics, meltblown nonwoven fabrics, spunlace nonwoven fabrics, hot-rolled nonwoven fabrics, and needle-punched nonwoven fabrics that can be manufactured by the carding method Water-repellent substances or various non-woven fabrics that have been treated with water-repellent treatment. Particularly preferred are, for example, spunbond nonwovens, spunbond-meltblown (SM) nonwovens, spunbond-meltblown-spunbond (SMS) nonwovens, and the like.

The absorbent article of the present invention is not limited to the menstrual tampon of the above-mentioned embodiment, and can be applied to, for example, a sanitary pad, an incontinence pad, a urine absorbent pad, a disposable diaper, and the like. It is not limited to menstrual blood, and is also effective for urine, vaginal discharge, and soft stools, in addition to menstrual blood. In addition to the above-mentioned constituent members, the members may be appropriately assembled in accordance with the use or function.

In addition, the absorbent article of the present invention is preferably packaged individually when the article is carried in a bag or the like for each product such as menstrual tampons or sanitary pads. Specifically, it is preferable to fold it in the longitudinal direction so that the front layer becomes the inside, and to form an individual package of an absorbent article which is wrapped with an outer packaging material for individual packaging. The individual package can protect the hygiene of the front layer (use surface) that comes in contact with the skin, and can be a highly portable item, which can improve the convenience of the user.

Regarding the above-mentioned embodiments, the present invention further discloses the following absorbent articles, individual packages of absorbent articles, and methods for producing the absorbent articles.

<1> An absorbent article comprising a front layer and an absorbent layer, and having a longitudinal direction corresponding to a direction connecting a ventral portion, a lower crotch portion, and a dorsal portion of a wearer, and a width direction orthogonal to the longitudinal direction, and A member having a front portion, a rear portion, and an intermediate portion located between the front portion and the rear portion and including a region corresponding to an excretion point along the longitudinal direction, the member on the absorption layer or on the front layer side than the absorption layer It has a region containing a cold-sensing agent, and a cut-off portion is provided on the absorption layer at a position overlapping the region containing the cold-sensing agent in a plan view.

<2> The absorbent article according to the above <1>, in which the plurality of cut portions are arranged in the form of slit portions. <3> The absorbent article according to the above <2>, wherein the width of the slit portion is 0.5 mm or less, preferably 0.3 mm or less, and further preferably 0.2 mm or less. <4> The absorbent article according to any one of the above <1> to <3>, wherein the cut-off portion is disposed in a region of the absorbent layer that is more inward than the widthwise end edges. <5> The absorbent article according to any one of the above <1> to <4>, wherein the dividing portion has a length extending in the longitudinal direction and a plurality of the dividing portions are arranged in the longitudinal direction, and the dividing portion is The interval is less than or equal to the length of the division. <6> The absorbent article according to any one of the above <1> to <5>, wherein the cold sensation agent is contained on the skin surface side of the absorption layer and the skin surface side is more inward than the widthwise end edges. Area. <7> The absorbent article according to any one of the items <1> to <6>, wherein in the region containing the cold sensation agent, a cold sensate base is provided in the center in the width direction of the middle portion of the absorbent article. Heavier areas than the surrounding area. <8> The absorbent article according to any one of the items <1> to <7>, wherein the absorbent article is located closer to the skin surface side than the front surface layer, and extends across the widthwise ends of the absorbent layer in the longitudinal direction. The side sheet is at least at the middle part, and the widthwise inner end of the side sheet is located closer to the widthwise outer side than the cutout part located at the outermost side in the widthwise direction. <9> The absorbent article according to the above <8>, wherein the side sheet has lower air permeability than the front layer. <10> The absorbent article according to any one of the items <1> to <9>, wherein the absorbent layer includes an absorbent sheet, and the absorbent sheet includes a highly absorbent polymer material and a hydrophilic fiber. <11> The absorbent article according to the above <10>, wherein the absorbent layer is a structure in which the absorbent sheet is laminated. <12> The absorbent article according to the above <10> or <11>, wherein the absorbent layer is provided with a polymer-rich region and a fiber-rich region in a cross-section, and the polymer-rich region is relatively absorbent The region in which the mass ratio of the superabsorbent polymer material, which is the total mass of the polymer material and the mass of the hydrophilic fiber, is relatively high, and the fiber-enriched region is the region where the aforementioned mass ratio is relatively low. <13> The absorbent article according to the above <12>, wherein the fiber-rich region has a region containing the cold-sensing agent, and the region containing the cold-sensing agent is disposed on the frontmost layer side of the absorbent layer. <14> The absorbent article according to any one of the items <1> to <13>, which has an intermediate portion between the front surface layer and the absorbent layer and a portion overlapping the region containing the cold sensor in a plan view. Fiber layer. <15> The absorbent article according to the above <14>, wherein the front layer and the intermediate fiber layer are joined by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. <16> The absorbent article according to <14> or <15>, wherein the intermediate fiber layer and the absorbent layer are joined by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. <17> The absorptive article as described in said <16> whose ratio of the area in which the said adhesive is arrange | positioned to the skin surface side surface area of the said absorption layer is 10% or less. <18> The absorbent article according to any one of the above <14> to <17>, wherein the intermediate fiber layer includes a nonwoven fabric containing thermoplastic fibers. <19> The absorbent article according to any one of <14> to <18>, wherein the fiber density of the intermediate fiber layer is higher than that of the front layer. <20> The absorbent article according to any one of the items <10> to <19>, wherein the absorbent layer is a laminate structure in which the absorbent sheet is folded. <21> The absorbent article according to any one of the items <1> to <20>, wherein the absorbent layer is provided at a center in the width direction of the intermediate portion of the absorbent article and has a high basis weight portion thicker than the surroundings. <22> The absorbent article according to the above <21>, wherein the absorbent layer includes a main absorbent sheet and a central absorbent material arranged on a non-skin surface side of the main absorbent sheet and having a narrower width than the main absorbent sheet. The laminated structure of the flexible sheet is such that an overlapping portion of the main absorbent sheet and the central absorbent sheet forms the high basis weight portion. <23> The absorbent article according to any one of the above <1> to <22>, wherein the absorbent article is a menstrual tampon or a sanitary pad. <24> An individual packaging body of an absorbent article, which folds the absorbent article according to any one of the above <1> to <23> in the longitudinal direction so that the front layer becomes the inside, and wraps it with an outer cover Made. <25> A method for manufacturing an absorbent article, comprising the steps of: applying a cold sensation agent over a specific width of a raw material member that becomes an absorption layer; and coating a colder agent coating width on a surface of a raw material member that becomes an absorption layer. A wider width is provided with a cut-off region extending in the longitudinal direction of the absorption layer. <26> The method for manufacturing an absorbent article according to the above <25>, wherein the step of applying the cold sensation agent is performed after the step of setting the region of the cut-off portion. <27> The method for manufacturing an absorbent article according to the above <25> or <26>, wherein the step of setting the above-mentioned cut-off region is performed by dispersing and arranging a plurality of slits in a specific direction in a specific region of the absorbent sheet. step. <28> The method for producing an absorbent article according to any one of the items <25> to <27>, wherein the raw material member that becomes the absorbent layer is an absorbent sheet member, and includes the following steps: After the step of cold sensation agent and the step of arranging the divided region, the absorbent sheet member is folded further outside than the widthwise end of the position where the cold sensation agent is applied to form a laminated absorbent sheet.

The present invention has been described together with its embodiments and examples, but as long as the inventor has not specifically specified, the inventor's invention is not limited in any details of the description, and it is considered that the invention should not be violated in the accompanying application. The spirit and scope of the invention shown in the patent scope has been broadly explained before.

This application claims priority based on PCT / JP2017 / 040265, which was filed internationally on November 8, 2017. The contents of this application are incorporated herein by reference as part of the description of this specification.

1‧‧‧ front layer

2‧‧‧ back layer

3‧‧‧ Absorptive layer

4‧‧‧ intermediate fiber layer

5‧‧‧ side sheet

6‧‧‧flank

8‧‧‧ Breaking Department

9‧‧‧ peripheral seal

10‧‧‧Menstruation

31‧‧‧Body absorbent sheet

31A‧‧‧ (of the body absorbent sheet) skin side

32‧‧‧ central absorbent sheet

33‧‧‧High Basis Weight

35‧‧‧ polymer-rich region

36‧‧‧Fiber enrichment area

37‧‧‧ Super Absorbent Polymer

39‧‧‧ width end edges

81‧‧‧Slit section

82‧‧‧Concave space

85A‧‧‧Slit line

85B‧‧‧Slit line

85C‧‧‧Slit line

86‧‧‧Slit area

310A‧‧‧ Absorptive layer

310B‧‧‧ Absorptive layer

311‧‧‧ convex

312‧‧‧film department

C‧‧‧Middle

C1‧‧‧ receiving area

F‧‧‧ Arrow

F‧‧‧Front

H1‧‧‧thickness

H2‧‧‧thickness

L‧‧‧ Centerline

L1‧‧‧ length

L2‧‧‧ interval

P‧‧‧ symbol

R‧‧‧ Rear

X‧‧‧ direction

Y‧‧‧ direction

FIG. 1 is a perspective view schematically showing a partial absence from a skin abutment surface side in a state where a menstrual tampon is stretched as a preferred embodiment of the absorbent article of the present invention. FIG. 2 is a cross-sectional view schematically showing a cross-section taken along the line II-II of the menstrual napkin shown in FIG. 1. Fig. 3 is a top view of the absorption layer. Fig. 4 is a sectional view schematically showing another preferable aspect of the absorption layer, (A) is a sectional view of a state having convex portions and concave portions on the front layer side, and (B) is a convex portion on the back layer side; And a sectional view of the state of the recessed space. FIG. 5 (A) is a cross-sectional view schematically showing an example of a state in which the absorbent layer is deformed with the broken part as an axis, and (B) is a schematic view showing another example of a state in which the absorbent layer is deformed with the broken part as an axis Cutaway view. 6 (A) to (D) are cross-sectional views showing other preferred examples of the folded structure of the central absorbent sheet. FIG. 7 (A) is a schematic diagram showing the relationship between the longitudinal length of the slit portion and the vertical interval between the slit portions when the slit portion is in a single line, and (B) is a diagram illustrating the case where a plurality of slit portions are present. (C) is a pattern diagram showing the relationship between the longitudinal length of the slit portion and the longitudinal interval between the slit portions when there are multiple rows of slit portions. FIG. 8 is a partially enlarged sectional view showing a polymer-enriched region and a fiber-enriched region in the absorption layer.

Claims (27)

An absorbent article includes a front layer and an absorbent layer, and has a longitudinal direction corresponding to a direction connecting a ventral portion, a lower crotch portion, and a dorsal portion of a wearer, and a width direction orthogonal to the longitudinal direction, and along the direction A longitudinal portion has a front portion, a rear portion, and a middle portion located between the front portion and the rear portion and including a region corresponding to an excretion point, and the member on the absorption layer or on the front layer side than the absorption layer has a cooling portion. A region of the susceptor is provided with a dividing portion on the absorption layer in a position overlapping with the region including the cold sensation agent in a plan view, and the dividing portion is provided in the form of a slit portion. The absorbent article according to claim 1, wherein the width of the slit portion is 0.5 mm or less. For example, the absorbent article according to claim 1 or 2, wherein the above-mentioned cut-off portion is disposed in an area of the absorbent layer that is more inward than the widthwise end edges. For the absorbent article of claim 1 or 2, wherein the divisions have a length extending in the longitudinal direction and a plurality of the divisions are arranged in the longitudinal direction, and the interval between the divisions is the length of the divisions the following. The absorbent article according to claim 1 or 2, wherein the cold sensation agent is contained in a region of the skin surface side of the absorption layer, and the skin surface side is more inward than the widthwise end edges. The absorbent article according to claim 1 or 2, wherein in the region containing the cold sensation agent, there is an area where the basis weight of the cold sensation agent is lower than the surroundings at the center in the width direction of the middle portion of the absorbent article. For example, the absorbent article of claim 1 or 2, wherein the side sheet extending in the longitudinal direction is arranged on the skin surface side more than the front layer and across the widthwise both ends of the absorbent layer, and at least the above In the middle portion, the widthwise inner end of the side sheet is located further outward in the width direction than the cutout portion located at the outermost portion in the width direction. The absorbent article according to claim 7, wherein the side sheet has lower air permeability than the front layer. The absorbent article according to claim 1 or 2, wherein the absorbent layer comprises an absorbent sheet, and the absorbent sheet includes a highly absorbent polymer material and a hydrophilic fiber. The absorbent article according to claim 9, wherein the absorbent layer has a structure in which the absorbent sheet is laminated. For example, the absorbent article according to claim 9, wherein the above-mentioned absorbent layer is provided with a polymer-rich region and a fiber-rich region in a cross-section, and the polymer-rich region has a quality and hydrophilicity relative to a highly absorbent polymer material. The region where the mass ratio of the superabsorbent polymer material of the total mass of the fiber is relatively high, and the fiber-enriched region is the region where the aforementioned mass ratio is relatively low. The absorbent article according to claim 11, wherein the fiber-enriched region has a region containing the cold-sensing agent, and the region containing the cold-sensing agent is disposed on the frontmost layer side of the absorbent layer. The absorbent article according to claim 1 or 2, wherein an intermediate fiber layer is provided between the front surface layer and the absorption layer, and in a portion overlapping with a region containing the cold sensor in a plan view. The absorbent article according to claim 13, wherein the front layer and the intermediate fiber layer are joined by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. The absorbent article according to claim 13, wherein the intermediate fiber layer and the absorbent layer are joined by a plurality of adhesives extending in the longitudinal direction due to the intermittent arrangement in the width direction. For example, in the absorbent article according to claim 15, the ratio of the area where the above-mentioned adhesive is disposed to the surface area of the skin surface side of the above-mentioned absorption layer is 10% or less. The absorbent article according to claim 13, wherein said intermediate fiber layer comprises a non-woven fabric containing thermoplastic fibers. The absorbent article according to claim 13, wherein the intermediate fiber layer has a higher fiber density than the front layer. The absorbent article according to claim 9, wherein the absorbent layer is a laminate structure in which the absorbent sheet is folded. The absorbent article according to claim 1 or 2, wherein the absorbent layer is provided at the center in the width direction of the middle portion of the absorbent article and has a high basis weight portion thicker than the surroundings. The absorbent article according to claim 20, wherein the absorbent layer includes a main absorbent sheet and a central absorbent sheet having a narrower width than the main absorbent sheet, which is arranged on the non-skin surface side of the main absorbent sheet. In a laminated structure, an overlapping portion of the main absorbent sheet and the central absorbent sheet forms the high basis weight portion. For the absorbent article of claim 1 or 2, wherein the absorbent article is a menstrual tampon or a sanitary pad. An individual packaging body of an absorbent article is obtained by folding the absorbent article according to claim 1 or 2 in the above-mentioned longitudinal direction so that the front layer becomes the inside, and wrapping the absorbent article with an outer material. A method for manufacturing an absorbent article, comprising the steps of: applying a cold sensation agent over a specific width of a raw material member that becomes the absorption layer; and spreading a wider width of the cold sensation agent on the surface of the raw material member that becomes the absorption layer. The width is provided in the region of the cutout portion extending in the longitudinal direction of the absorption layer. The manufacturing method of the absorbent article according to claim 24, wherein the step of applying the above-mentioned cold-sensitive agent is performed after the step of setting the above-mentioned cut-off region. For example, the manufacturing method of the absorbent article according to claim 24 or 25, wherein the step of setting the region of the cut portion is a step of dispersing and disposing a plurality of slits in a specific direction of a specific region of the absorbent sheet. For example, the manufacturing method of the absorbent article according to claim 24 or 25, wherein the raw material member that becomes the absorbent layer is an absorbent sheet member and includes the following steps, that is, the step of applying the cold sensation agent and the setting of the division After the step of the partial region, the absorbent sheet member is folded further outside than the widthwise end of the position where the cold sensitizer is applied to form a laminated absorbent sheet.