JP3237966U - Shorts-type napkins, shorts-type napkin packages, and shorts-type napkin individual packages - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shorts type napkin having good fit and easy to dispose of. Shorts having an absorbent core 11, a liquid-impermeable sheet located on the non-skin side of the absorbent core, and a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet. The type napkin 1, the shorts type napkin, has a vertical expansion / contraction region 40 that expands / contracts in the vertical direction at least a part of the lower crotch, and a post-treatment tape 30, and the vertical expansion / contraction region is a liquid impermeable sheet. The shorts-shaped napkin is provided across the center line that divides the shorts-type napkin into two equal parts in the left-right direction between the sheet and the non-skin side sheet. .. [Selection diagram] Fig. 1

Description

The present invention relates to a shorts-type napkin, a package of shorts-type napkins, and an individual package of shorts-type napkins.

Shorts-type napkins are known as sanitary products. Patent Document 1 discloses a shorts-type napkin (absorbent article) in which an elastic member is arranged along the longitudinal direction of the absorbent body on the back surface side of the absorbent body in the inseam. According to such a shorts type napkin, the absorbent body is lifted toward the wearer's skin side by the contraction action of the elastic member. Therefore, the absorbent body fits well to the wearer's inseam, and excellent leak prevention performance can be obtained.

Japanese Patent Application Laid-Open No. 2002-20942

However, in the shorts type napkin described in Patent Document 1, an elastic member is disposed between the absorber and the liquid-impermeable back sheet. Therefore, the contractile force of the elastic member is likely to be reduced by the excrement liquid absorbed by the absorber. Then, the absorbent body cannot be lifted to the skin side, and the fit may be deteriorated.
Further, the napkin that is arranged and used inside the underwear is provided with an adhesive portion for fixing to the underwear on the non-skin side surface thereof. Therefore, when a used napkin is rolled at the time of disposal, the rolled state is maintained by the adhesive portion, and it is easy to dispose of it. However, although the shorts type napkin is larger in size than the napkin used with underwear, it does not have an adhesive part to fix it to the underwear, so the rolled state is not maintained and it is difficult to dispose of it. There's a problem.

The present invention has been made in view of the above problems, and an object thereof is to provide a shorts type napkin having a good fit and easy to dispose of.

The main idea to achieve the above purpose is
It has a vertical direction, a horizontal direction, and a front-back direction.
A shorts-type napkin having an absorbent core, a liquid-impermeable sheet located on the non-skin side of the absorbent core, and a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet. There,
The shorts-type napkin has a vertically stretchable region that expands and contracts in the vertical direction at least a part of the lower crotch, and a post-treatment tape.
The vertical expansion / contraction region is provided between the liquid impermeable sheet and the non-skin side sheet so as to straddle a center line that bisects the shorts type napkin in the left-right direction.
In the left-right direction, at least a part of the post-treatment tape overlaps with the vertical expansion / contraction region.
The post-treatment tape has a longitudinal direction and a width direction.
The longitudinal direction of the post-treatment tape is a shorts-type napkin characterized in that the shorts-type napkin is inclined with respect to the vertical direction.
Other features of the present invention will be clarified by the description of the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a shorts type napkin that has a good fit and is easy to dispose of.

It is a schematic rear view which shows the rear side part of the shorts type napkin 1. It is a schematic plan view which looked at the unfolded and extended state napkin 1 from the skin side in the thickness direction. It is sectional drawing at the center line CL in the longitudinal direction shown in FIG. It is sectional drawing at the center line CL2 in the left-right direction shown in FIG. 5A and 5B are schematic cross-sectional views of the rear side of the napkin 1. 6A and 6B are diagrams showing a modified example of the arrangement of the post-processing tape 30. It is explanatory drawing of the squeezing part 51-53 provided in the absorbent body 10. 8A and 8B are diagrams showing a modified example of the arrangement of the post-processing tape 30. FIG. 3 is a schematic plan view of the napkin 1 of the second embodiment as viewed from the non-skin side. It is a figure which shows an example of the folding method at the time of packaging of a napkin 1. 11A and 11B are explanatory views of the individual package 70 of the napkin 1.

The description of this specification and the accompanying drawings will clarify at least the following matters.
It has a vertical direction, a horizontal direction, and a front-back direction.
A shorts-type napkin having an absorbent core, a liquid-impermeable sheet located on the non-skin side of the absorbent core, and a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet. There,
The shorts-type napkin has a vertically stretchable region that expands and contracts in the vertical direction at least a part of the lower crotch, and a post-treatment tape.
The vertical expansion / contraction region is provided between the liquid impermeable sheet and the non-skin side sheet so as to straddle a center line that bisects the shorts type napkin in the left-right direction.
In the left-right direction, at least a part of the post-treatment tape overlaps with the vertical expansion / contraction region.
The post-treatment tape has a longitudinal direction and a width direction.
A shorts-type napkin characterized in that the longitudinal direction of the post-treatment tape is inclined with respect to the vertical direction of the shorts-type napkin.

According to such a shorts type napkin, the vertical expansion / contraction region enhances the fit to the inseam of the wearer and can suppress the leakage of excrement. Further, since the vertical stretchable region is provided on the non-skin side of the liquid impermeable sheet, it is possible to suppress the stretchability of the vertical stretchable region from being reduced by the excretory liquid, and the fit is maintained. In addition, the post-treatment tape keeps the used shorts-type napkin in a rolled state and is easy to dispose of. Further, in the left-right direction, the post-treatment tape and the vertical expansion / contraction region overlap each other, so that when the post-treatment tape is pulled, the vertical expansion / contraction region is stretched and the post-treatment tape is more likely to extend outward. It becomes easier to wrap it around the napkin.
Further, when the upper part of the napkin is rolled so as to be displaced in the left-right direction with respect to the lower part, the post-treatment tape extending in the direction inclined with respect to the vertical direction is easily fixed to the central portion in the left-right direction of the napkin.

Such a shorts-type napkin, characterized in that the entire post-treatment tape overlaps the vertical expansion / contraction region in the left-right direction.

According to such a shorts type napkin, the vertical expansion / contraction region makes it easy for the post-treatment tape to extend outward over the entire width in the left-right direction, and makes it easy to wrap the post-treatment tape around the napkin.

The shorts-type napkin, wherein the post-treatment tape has a region that overlaps with the vertically stretchable region when the shorts-type napkin in the unfolded state is viewed in a plan view.

According to such a shorts type napkin, when the post-treatment tape is pulled, the vertical expansion / contraction region is more easily stretched, and the post-treatment tape is more easily stretched outward, so that the post-treatment tape can be easily wrapped around the napkin.

The shorts type napkin is characterized in that the post-treatment tape is provided above the upper end of the vertical expansion / contraction region on the side where the post-treatment tape is provided in the front-rear direction. napkin.

According to such a shorts type napkin, it is possible to prevent the post-treatment tape from reducing the elasticity of the vertical expansion / contraction region. The post-treatment tape can be fixed to the area where wrinkles do not occur due to the vertical expansion and contraction area, and the post-treatment tape can be firmly fixed to the non-skin side surface of the napkin.

The shorts-type napkin is such a shorts-type napkin, the shorts-type napkin has an absorbent main body provided with the absorbent core, and an exterior member located on the non-skin side of the absorbent main body, and the post-treatment tape is A shorts-type napkin characterized in that it has a region that does not overlap with the absorbent core but overlaps with the absorbent body when the shorts-type napkin in the unfolded state is viewed in a plan view.

According to such a shorts type napkin, the absorbent body makes it difficult for the wearer to feel the hardness of the post-treatment tape. Since the fixing part (root part) of the post-treatment tape overlaps with the absorbent body or is located near the absorbent body, it is difficult for the post-treatment tape to wobble when pulled, and the post-treatment tape moves in its longitudinal direction. It becomes easy to be pulled.

The shorts-type napkin is such a shorts-type napkin, the shorts-type napkin has an absorbent main body provided with the absorbent core, and an exterior member located on the non-skin side of the absorbent main body, and the exterior member is a shorts-type napkin. In the waistline portion that corresponds to the waistline of the wearer, the post-treatment tape expands and contracts in the left-right direction, and the post-treatment tape is provided above the upper end of the absorbent core on the side where the post-treatment tape is provided in the front-rear direction. In the region of the waist circumference portion that overlaps with the post-processing tape in the vertical direction, the central portion in the left-right direction has a unit width region in the left-right direction as compared with the end portion in the left-right direction. A shorts-type napkin characterized by a small force for extending the unit length.

According to such a shorts type napkin, the post-treatment tape is less likely to be affected by the elasticity of the waist circumference portion in the left-right direction. Therefore, the post-treatment tape is likely to be pulled straight in the longitudinal direction thereof.

The shorts-type napkin, wherein the post-treatment tape has a region overlapping with the absorbent core when the shorts-type napkin in the unfolded state is viewed in a plan view.

According to such shorts-type napkins, the absorbent core makes it difficult for the wearer to feel the hardness of the post-treatment tape. Since the fixing part (root part) of the post-treatment tape overlaps with the absorbent core or is located near the absorbent core, it is difficult for the post-treatment tape to wobble when pulled, and the post-treatment tape moves in the longitudinal direction thereof. It becomes easy to be pulled straight.

In such a shorts type napkin, the post-treatment tape has a vertical cross section folded in a Z shape, and has a fixing portion fixed to a non-skin side surface of the shorts type napkin, and the fixing portion. Is a shorts-type napkin characterized in that it is provided so as to straddle the upper end of the absorbent core on the side where the post-treatment tape is provided in the front-rear direction.

According to such a shorts type napkin, the step at the upper end of the absorbent core makes it easy to unfold the folding structure of the post-treatment tape. When rolling the napkin, the upper end of the absorbent core tends to be the bending base point of the napkin, and the post-treatment tape also tends to bend in the direction of rolling the napkin.

The shorts-type napkin, wherein the shorts-type napkin has a squeezed portion in which the absorbent core is squeezed in the thickness direction thereof, and the post-treatment tape is a plan view of the shorts-type napkin in an unfolded state. A shorts-type napkin characterized by having an area that sometimes overlaps with the squeezed portion.

According to such a shorts type napkin, the squeezed portion makes it difficult for the wearer to feel the hardness of the post-treatment tape. In addition, since the fixing part (root part) of the post-treatment tape overlaps with the squeezing part or is located near the squeezing part, the post-treatment tape does not easily wobble when the post-treatment tape is pulled. Is more likely to be pulled straight in its longitudinal direction.

The shorts-type napkin is such a shorts-type napkin, the shorts-type napkin has an absorbent main body provided with the absorbent core, and an exterior member located on the non-skin side of the absorbent main body. The post-treatment tape has a fixing portion fixed to the non-skin side surface of the shorts type napkin, and the fixing portion has a fixing portion in the front-rear direction. A shorts-type napkin characterized in that it is provided across the boundary position on the side on which the post-treatment tape is provided.

According to such a shorts type napkin, when the napkin is rolled, the boundary position where the number of laminated materials of the exterior member changes tends to be the bending base point of the napkin, and the post-treatment tape also tends to bend in the direction of rolling the napkin.

In such a shorts type napkin, the shorts type napkin has an absorbent main body provided with the absorbent core and an exterior member located on the non-skin side of the absorbent main body, and the post-treatment tape is It has a knob portion without an adhesive surface, and the knob portion is provided above the upper end of the absorbent body on the side where the post-treatment tape is provided in the front-rear direction. Shorts type napkin to do.

According to such a shorts type napkin, since the grip portion is provided only on the part of the exterior member that does not overlap with the absorbent body, the exterior member is easily bent with respect to the grip portion, and the user can easily pick the grip portion. ..

In such a shorts type napkin, the post-treatment tape is provided at a portion on the rear side of the shorts type napkin, and the vertical direction from the lower end of the shorts type napkin to the upper end of the absorbent core on the rear side. The length of the shorts type napkin is longer than the length in the vertical direction from the lower end to the upper end of the absorbent core on the front side.

According to such a shorts type napkin, the long absorbent core on the rear side can suppress back leakage. If the post-treatment tape is provided on the posterior side, it is rolled so that the posterior portion of the napkin is on the outer side. Therefore, since the absorption surface of the posterior absorbent core that protrudes upward from the anterior absorbent core is less likely to be exposed, it is possible to suppress the exudation of excrement from the rolled napkin.

The shorts-type napkin is such a shorts-type napkin, which has an absorbent main body provided with the absorbent core and an exterior member located on the non-skin side of the absorbent main body, and has the absorbent main body. A first welded portion to which the material is welded is provided at the upper end portion, and the post-treatment tape has a region overlapping with the first welded portion when the shorts-type napkin in the unfolded state is viewed in a plan view. Shorts type napkin featuring that.

According to such a shorts type napkin, the first welding portion makes it difficult for the wearer to feel the hardness of the post-treatment tape. Further, since the fixing portion (root portion) of the post-treatment tape overlaps with the first welding portion or is located near the first welding portion, the post-treatment tape does not easily wobble when the post-treatment tape is pulled. , The post-treatment tape tends to be pulled straight in its longitudinal direction.

In the shorts type napkin, the shorts type napkin has an absorbent main body provided with the absorbent core and an exterior member located on the non-skin side of the absorbent main body, and the outer member is a shorts type napkin. The post-treatment tape has a first exterior sheet, a second exterior sheet, and a plurality of second welded portions for welding the first exterior sheet and the second exterior sheet, and the post-treatment tape is not a shorts type napkin. A shorts-type napkin having a fixing portion fixed to the side surface of the skin, wherein the fixing portion has a region overlapping with the second welded portion when the shorts-type napkin in a deployed state is viewed in a plan view.

According to such a shorts type napkin, the post-treatment tape can be fixed to a flat region provided with the second welded portion, and the post-treatment tape is less likely to come off. Further, since the bonding strength is higher than that in the case where the first exterior sheet and the second exterior sheet are bonded with an adhesive, it is possible to prevent the exterior member from being damaged when the post-treatment tape is pulled.

Such a shorts-type napkin, the shorts-type napkin, has an absorbent main body provided with the absorbent core and an exterior member located on the non-skin side of the absorbent main body, and in the left-right direction. The entire post-treatment tape overlaps the vertical expansion / contraction region, and the post-treatment tape does not overlap the vertical expansion / contraction region and the absorbent core when the shorts-type napkin in the unfolded state is viewed in a plan view. The post-treatment tape has a region overlapping the absorbent body, and is provided at a portion on the rear side of the shorts-type napkin, from the lower end of the shorts-type napkin to the upper end of the absorbent core on the rear side. The shorts-type napkin characterized in that the length in the vertical direction up to is longer than the length in the vertical direction from the lower end to the upper end of the absorbent core on the front side.

According to such a shorts type napkin, firstly, the vertical expansion / contraction region makes it easy for the post-treatment tape to extend outward over the entire width in the left-right direction, and it becomes easy to wrap the post-treatment tape around the napkin. Secondly, it is possible to prevent the post-treatment tape from reducing the elasticity of the vertical expansion / contraction region. Third, the absorbent body makes it difficult for the wearer to feel the hardness of the post-treatment tape.
In addition, since the fixing part (root part) of the post-treatment tape overlaps with the absorbent body or is located near the absorbent body, it is difficult to wobble when the post-treatment tape is pulled, and the post-treatment tape has a length thereof. It becomes easy to be pulled in the direction. Fourth, the long rear absorbent core can prevent back leakage. If the post-treatment tape is provided on the posterior side, it is rolled so that the posterior portion of the napkin is on the outer side. Therefore, since the absorption surface of the posterior absorbent core that protrudes upward from the anterior absorbent core is less likely to be exposed, it is possible to suppress the exudation of excrement from the rolled napkin.

A package of a shorts-type napkin comprising such a shorts-type napkin and a packaging material for wrapping the shorts-type napkin. A shorts-type napkin package characterized by being folded so as not to be exposed.

According to the package of such a shorts type napkin, it is possible to prevent the post-treatment tape from being peeled off or broken before the use of the post-treatment tape.

An individual package of shorts-type napkins comprising a shorts-type napkin and a packaging material for individually wrapping the shorts-type napkins, wherein the shorts-type napkins have a vertical direction, a horizontal direction, and a front-rear direction. , An absorbent core, a liquid-impermeable sheet located on the non-skin side of the absorbent core, a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet, and at least one of the lower crotch. The section has a vertical stretchable region that expands and contracts in the vertical direction and a post-treatment tape, and the vertical stretchable region holds the shorts-type napkin between the liquid-impermeable sheet and the non-skin side sheet. It is provided across the center line that divides into two equal parts in the left-right direction, and in the left-right direction, at least a part of the post-treatment tape overlaps the vertical expansion / contraction region, and the packaging material is a tubular package. A piece of shorts-type napkin that has a pair of sealing portions that seal the openings on both sides of the sheet, and one of the pair of sealing portions has a stronger peeling strength than the other. Package.

According to the individual package of such a shorts type napkin, it becomes easy to take out the napkin from the sealing portion having the weaker peel strength. On the other hand, since the sealed portion having the stronger peel strength is easily maintained in the sealed state, it is easy to wrap the rolled used napkin in the packaging material and dispose of it.

Hereinafter, embodiments of the shorts type napkin will be described.
=== First Embodiment ===
<<< Basic structure of shorts type napkin 1 >>>
FIG. 1 is a schematic rear view showing the rear side portion of the shorts type napkin 1. FIG. 2 is a schematic plan view of the unfolded and stretched napkin 1 as viewed from the skin side in the thickness direction. FIG. 3 is a schematic cross-sectional view taken along the center line CL in the longitudinal direction shown in FIG. FIG. 4 is a schematic cross-sectional view taken along the center line CL2 in the left-right direction shown in FIG.

The unfolded state of the shorts type napkin 1 (hereinafter also referred to as "napkin") is a state in which the pair of side joint SSs provided on both sides of the napkin 1 are separated from each other, and the napkin 1 is opened and unfolded in a plane. Is. The stretched state of the napkin 1 indicates a state in which the elastic member included in the napkin 1 is stretched to the extent that the wrinkles of the napkin 1 become invisible. Specifically, a state in which the dimensions of each member constituting the napkin 1 are stretched to match or close to the dimensions of the individual member (that is, the dimensions in the state where the elastic member does not exhibit elasticity). show.

The napkin 1 has a vertical direction, a horizontal direction, and a front-rear direction orthogonal to each other. In the vertical direction, the side that becomes the wearer's waistline side when worn is referred to as the "upper side", and the side that becomes the inseam side is referred to as the "lower side". In the anteroposterior direction, the side that is the ventral side of the wearer when worn is referred to as the "front side", and the side that is the dorsal side of the wearer is referred to as the "rear side". Further, as shown in FIG. 3, the direction in which the members are laminated is defined as the "thickness direction", the side in contact with the wearer's skin is defined as the "skin side", and the opposite side is defined as the "non-skin side". .. Further, in the unfolded napkin 1, the direction corresponding to the vertical direction of the shorts-shaped napkin 1 is also referred to as "longitudinal direction".

The napkin 1 has an absorbent main body 10 and an exterior member 20 located on the non-skin side of the absorbent main body 10. The napkin 1 has a front waist circumference portion 2 which corresponds to the front waist circumference of the wearer, a crotch lower portion 3 which corresponds to the inseam portion of the wearer, and a rear waist circumference portion 4 which corresponds to the posterior waist circumference of the wearer. Hereinafter, the front waist circumference portion 2 and the rear waist circumference portion 4 are collectively referred to as “girth circumference portions 2 and 4”. Fold the napkin 1 in half at the center line CL that bisects the unfolded napkin 1 in the longitudinal direction, and join the opposite front waist circumference 2 and the rear waist circumference 4 on both left and right sides by welding or the like. By forming a pair of side joints SS, the napkin 1 becomes a shorts type. The portion of the napkin 1 that overlaps with the side joint portion SS in the vertical direction is referred to as a waist circumference portion 2 and 4.

The absorbent main body 10 is a member having a rectangular shape in a plan view, and includes an absorbent core 11, a core wrap 12 that covers the absorbent core 11, and a liquid-permeable surface sheet 13 located on the skin side of the absorbent core 11. A liquid-impermeable leak-proof sheet 14 located on the non-skin side of the absorbent core 11, an outer layer sheet 15 located on the non-skin side of the leak-proof sheet 14, and a vertical elastic member 41 that expands and contracts in the vertical direction. (Details will be described later). The absorbent body 10 may include a sheet other than the above, for example, a second sheet (not shown) between the surface sheet 14 and the absorbent core 11.

The absorbent core 11 is a member that absorbs and holds a liquid such as menstrual blood, and is formed by molding a liquid absorbent fiber such as a pulp fiber mixed with a highly absorbent polymer (SAP) into a predetermined shape. It can be exemplified. In addition, examples of the absorbent core 11 include a SAP sheet in which a SAP layer is attached to a hydrophilic sheet, and an air-laid sheet in which liquid-absorbing fibers are formed into a sheet by an air-laid method. As the core wrap 12, a liquid-permeable sheet member such as tissue paper or non-woven fabric can be exemplified.

Further, the absorbent main body 10 has a pair of leak-proof wall portions 5 that can stand upright on the skin side on both side portions in the width direction. The leak-proof wall portion 5 is formed by an outer layer sheet 15 and a leak-proof wall elastic member 16. As shown in FIG. 3, both sides of the outer layer sheet 15 in the width direction are folded inward in the width direction so as to be located on the skin side surface of the surface sheet 13, and the folded portion expands and contracts in the longitudinal direction. A leak-proof wall elastic member 16 (for example, rubber thread) is provided. Due to the contraction action of the leak-proof wall elastic member 16, a part of the outer layer sheet 15 stands up on the skin side, and lateral leakage of excrement can be suppressed. However, the leak-proof wall portion 5 may not be provided on the absorbent main body 10.

As shown in FIG. 4, the exterior member 20 is located on the skin side of the first exterior sheet 21, the second exterior sheet 22 located on the non-skin side of the first exterior sheet 21, and the first exterior sheet 21. It has a third exterior sheet 23 to be used. As the first to third exterior sheets 21 to 23, a flexible sheet member such as a non-woven fabric can be exemplified. The upper end portion of the second exterior sheet 22 is folded back toward the skin side and downward side of the first exterior sheet 21 and the third exterior sheet 23. Further, the first exterior sheet 21 and the second exterior sheet 22 form the outer shape of the napkin 1, and in the unfolded state, the central portion in the longitudinal direction forms an hourglass shape confined inward in the width direction. The third exterior sheet 23 is a rectangular sheet provided on the front waist circumference portion 2 and the rear waist circumference portion 4, respectively. The exterior member 20 may be provided with a sheet other than the above, or may not be provided with the third exterior sheet 23.

Further, the exterior member 20 has a waist elastic member 24 provided in the waist circumference portions 2 and 4 and expands and contracts in the left-right direction, and a leg circumference elastic member 25 provided along the leg circumference opening of the napkin 1.
The elastic thread around the waist 24 and the elastic member 25 around the legs are exemplified by the thread rubber, but the present invention is not limited to this, and a sheet-shaped elastic member may be used.

A plurality of waist circumference elastic members 24 are provided in the waist circumference portions 2 and 4 at intervals in the vertical direction (longitudinal direction). Further, the waistline elastic member 24 is fixed to the first exterior sheet 21 and the second exterior sheet 22 in a state of being extended in the left-right direction between the first exterior sheet 21 and the second exterior sheet 22. As a result, the waist circumferences 2 and 4 fit the wearer's waist circumference. As shown in FIG. 2, an elastic member 26 that expands and contracts in the left-right direction may be provided in the crotch portion 3 below the waist circumference portions 2 and 4. As a result, it is possible to prevent the portion of the exterior sheet 20 of the lower crotch 3 from being turned over.

A plurality of (here, three) elastic members 25 around the legs are provided side by side in a direction intersecting the direction of expansion and contraction. The leg elastic member 25 is also fixed in an extended state between the first exterior sheet 21 and the second exterior sheet 22. As a result, the napkin 1 fits around the wearer's legs.

The basic structure of the napkin 1 has been described above, but the present invention is not limited to the above. For example, in the above, one continuous exterior member 20 forms the outer shape of the napkin 1, but the present invention is not limited to this. For example, the front exterior member and the rear exterior member are separate members, and the non-skin side surface of the absorbent body 10 is exposed to the outside at the crotch portion of the napkin 1, or the front exterior member and the rear exterior member. Another exterior member may be provided at the lower part of the crotch.

<<< About the crotch elastic member 15 and the post-treatment tape 30 >>>
5A and 5B are schematic cross-sectional views of the rear side of the napkin 1. 6A and 6B are diagrams showing a modified example of the arrangement of the post-processing tape 30. FIG. 7 is an explanatory diagram of the pressing portions 51 to 53 provided in the absorbent main body 10. 8A and 8B are diagrams showing a modified example of the arrangement of the post-processing tape 30.

The napkin 1 has a "vertical expansion / contraction region 40" that expands and contracts in the vertical direction. The vertical expansion / contraction region 40 is a region in which the napkin 1 expands / contracts in the vertical direction due to the vertical elastic member 41 of the absorbent body 10 that expands / contracts in the vertical direction. The vertical expansion / contraction region 40 is provided in at least a part of the crotch portion 3 of the napkin 1. That is, the vertical expansion / contraction region 40 is provided in a part or all of the vertical direction in the region below the side joint portion SS that joins the left and right side portions of the front side waist circumference portion 2 and the rear side waist circumference portion 4. There is. The vertical expansion / contraction region 40 may extend from the lower crotch portion 3 to the waist circumference portions 2 and 4, or may extend above the absorbent core 11.

The vertical elastic member 41 illustrated in FIG. 2 is a rubber thread, and four vertical elastic members 41 arranged along the vertical direction are provided at intervals in the horizontal direction. However, the number of the vertical elastic members 41 is not particularly limited. In this case, a line connecting the vertical elastic member 41a located on the rightmost side in the left-right direction, the vertical elastic member 41b located on the leftmost side in the left-right direction, and the tip of one side of each vertical elastic member 41 in the left-right direction (non-defective). A region defined by a line (not shown) connecting the tip of each vertical elastic member 41 on the other side in the left-right direction is referred to as a vertical expansion / contraction region 40.

The vertical elastic member 41 may be a sheet-shaped elastic member (for example, an elastic non-woven fabric, an elastic film, or the like). In this case, the region where the sheet-shaped elastic member is arranged is referred to as the vertical expansion / contraction region 40.

Further, as shown in FIG. 3, the vertical expansion / contraction region 40 divides the napkin 1 into two equal parts in the left-right direction between the leak-proof sheet 14 (liquid impermeable sheet) and the outer layer sheet 15 (non-skin side sheet). It is provided across the center line CL2. That is, the vertical elastic member 41 forming the vertical expansion / contraction region 40 is fixed to the leak-proof sheet 14 and the outer layer sheet 15 in a state of being extended in the vertical direction between the leak-proof sheet 14 and the outer layer sheet 15. In FIG. 1, two vertical elastic members 41 are provided on one side and the other side of the center line CL2 in the left-right direction.

The absorbent body 10 may not have the outer layer sheet 15, and the leak-proof sheet 14 may form the non-skin side surface of the absorbent body 10. In this case, although not shown, the vertical elastic member 41 extends in the vertical direction between the leak-proof sheet 14 (liquid impermeable sheet) and the first exterior sheet 21 (non-skin side sheet) of the exterior member 20. In this state, it is fixed to the leak-proof sheet 14 and the first exterior sheet 21.

As described above, the vertical expansion / contraction region 40 is provided in the crotch portion 3 of the napkin 1 so as to straddle the center line CL2 in the left-right direction. It is easy to deform so that the central part rises toward the skin. Unlike disposable diapers, the napkin 1 does not need to be provided with a space for accommodating stool in the portion from the inseam to the posterior side. Therefore, the absorbent core 11 and the like are pushed up to the skin side by the vertical expansion / contraction region 40 to fit into the groove of the wearer's vaginal opening and buttocks, and it is difficult to create a gap between the wearer and the napkin 1 to excrete. Leakage of liquid (menstrual blood, etc.) can be suppressed. In particular, since the napkin 1 fits in the groove of the buttocks, it is possible to suppress the back leakage of the excrement liquid.

Further, the vertical expansion / contraction region 40 (vertical elastic member 41) is provided on the non-skin side of the leak-proof sheet 14. Therefore, the vertical elastic member 41 is difficult to come into contact with the excrement liquid absorbed by the absorbent core 11, and it is possible to prevent the vertical elastic member 41 from reducing the elastic force due to the excretory liquid. Therefore, the fit of the napkin 1 by the vertical expansion / contraction region 40 can be maintained.

Further, the napkin 1 has a post-treatment tape 30. As shown in FIGS. 5A and 5B, examples of the post-treatment tape 30 include a tape main body 31, a knob portion 32, a fixing portion 33, and two tape adhesive portions 34. The tape body 31 is a rectangular member that is long in the vertical direction of the napkin 1. Before and during wearing the napkin 1, the tape body 31 has a Z-shaped cross section in the vertical direction, and in the folded state, the non-skin side surface (second exterior sheet) of the rear side of the napkin 1 is folded. It is fixed to 22) by a fixing portion 33 (adhesive or the like). A peelable and re-adhesive tape adhesive portion 34 is provided between each layer of the folded tape main body 31 to maintain the folded state. A knob 32 is provided at the tip of the tape body 31. Since the picking portion 32 does not have the tape adhesive portion 34 (adhesive surface), the user of the napkin 1 can pick it.

By the user of the napkin 1, the gripped portion 32 of the post-treatment tape 30 is pinched and the post-treatment tape 30 is pulled upward, so that the folded state of the tape body 31 is unfolded as shown in FIG. 5B. Then, the tape main body 31 becomes long in the vertical direction, and the tape adhesive portion 34 is exposed. As a result, the user can fix the tape body 31 to the napkin 1 by the tape adhesive portion 34 while winding the tape body 31 around the used rolled napkin 1.
The tape main body 31 is fixed to the napkin 1 by the tape adhesive portion 341 which protrudes upward from the napkin 1 and is provided on the side facing the napkin 1.

The shorts type napkin 1 is larger in size than the napkin that is excreted and used inside the underwear, and does not have an adhesive portion to be fixed to the underwear. Therefore, by providing the post-treatment tape 30 on the shorts-type napkin 1, when the used shorts-type napkin 1 is discarded, the rolled-up state of the shorts-type napkin 1 can be held by the post-treatment tape 30. Therefore, the excrement liquid absorbed by the napkin 1 is not easily exposed, and the used napkin 1 can be made compact. Therefore, it becomes easy to dispose of the shorts type napkin 1.

In addition, by the user recognizing that the post-treatment tape 30 is arranged on the rear side of the napkin 1, it is possible to prevent the front and back of the napkin 1 from being mounted upside down.
That is, the post-treatment tape 30 facilitates mounting the napkin 1 in the correct front-back orientation.

Further, as shown in FIGS. 1 and 2, the post-treatment tape 30 overlaps the vertical expansion / contraction region 40 in the left-right direction. That is, the position of the post-processing tape 30 in the left-right direction and the position of the vertical expansion / contraction region 40 in the left-right direction overlap.

When the post-processing tape 30 and the vertical expansion / contraction area 40 are aligned in the left-right direction, when the user pulls the post-processing tape 30 (tape body 31), the pulling force is easily transmitted to the vertical expansion / contraction area 40. Therefore, the portion of the napkin 1 located in the vertical expansion / contraction region 40 extends in the vertical direction. Therefore, the post-treatment tape 30 is easily pulled, and the post-treatment tape 30 is easily extended to the outside of the napkin 1. Therefore, it becomes easy to wind the post-treatment tape 30 around the rolled napkin 1. Further, since the post-treatment tape 30 is wound while the napkin 1 is also stretched in the vertical direction by the vertical expansion / contraction region 40, it is fixed in a more compact and strongly curled state.

As described above, according to the napkin 1 of the present embodiment, the vertical expansion / contraction region 40 improves the fit of the napkin 1, and the vertical expansion / contraction region 40 improves the operability of the post-treatment tape 30, making the napkin 1 compact. Since it is possible to dispose of the napkin 1, it becomes easy to dispose of the napkin 1.

In the left-right direction, at least a part of the post-treatment tape 30 may overlap with the vertical expansion / contraction region 40. That is, a part of the post-treatment tape 30 may be positioned on one side of the vertical expansion / contraction region 40 on one side of the one side in the left-right direction. Also in this case, the vertical expansion / contraction region 40 makes it easy to pull the post-treatment tape 30, and the napkin 1 can be compactly and strongly rolled while being stretched in the vertical direction.

However, as shown in FIGS. 1 and 2, the width W1 in the left-right direction of the post-treatment tape 30 is equal to or less than the width W2 in the left-right direction of the vertical expansion / contraction region 40, and the entire post-treatment tape 30 is up and down in the left-right direction. It is preferable that it overlaps with the expansion / contraction region 40. By doing so, when the post-treatment tape 30 is pulled, the post-treatment tape 30 tends to extend to the outside of the napkin 1 due to the extension of the vertical expansion / contraction region 40 over the entire width thereof.

Further, when a part of the post-treatment tape 30 in the left-right direction does not overlap with the vertical expansion / contraction region 40, a part thereof is difficult to extend, and another part overlapping with the vertical expansion / contraction region 40 is easy to extend. It becomes easy to tilt in the longitudinal direction. On the other hand, when the entire left-right direction of the post-treatment tape 30 overlaps with the vertical expansion / contraction region 40, the post-treatment tape 30 tends to extend regardless of the position in the left-right direction of the post-treatment tape 30, so that the post-treatment tape 30 is straight in the longitudinal direction thereof. It becomes easy to be pulled by.

For example, as shown in FIG. 1, when the longitudinal direction of the post-treatment tape 30 is aligned with the vertical direction of the napkin 1, when the post-treatment tape 30 is pulled straight in the longitudinal direction as described above, the post-treatment tape 30 is rearranged. It becomes easy to fix the processing tape 30 to the central portion in the left-right direction of the napkin 1. If the post-treatment tape 30 is fixed at a position biased to one side in the left-right direction of the napkin 1, the portion of the napkin 1 far from the post-treatment tape 30 is likely to open, and the surface on which the napkin 1 has absorbed the excrement liquid may be exposed. There is. Therefore, by fixing the post-treatment tape 30 to the central portion in the left-right direction of the napkin 1, the rolled state of the napkin 1 is easily maintained, and the absorption surface of the excrement liquid is less likely to be exposed.

Further, the post-treatment tape 30 illustrated in FIGS. 1 and 5A is provided above the upper end of the vertical expansion / contraction region 40 on the side where the post-treatment tape 30 is provided (here, the rear side) in the front-rear direction of the napkin 1. Has been done.

In this case, since the post-treatment tape 30 does not overlap with the vertical expansion / contraction region 40 in the thickness direction, it is possible to prevent the expansion / contraction force of the vertical expansion / contraction region 40 from being reduced by the hardness of the post-treatment tape 30. Therefore, the fit of the napkin 1 by the vertical expansion / contraction region 40 is maintained. Further, the post-treatment tape 30 can be fixed at the position of the napkin 1 that does not overlap with the wrinkles caused by the shrinkage of the vertical expansion / contraction region 40. Therefore, the post-treatment tape 30 is firmly fixed to the napkin 1, and it is possible to prevent the post-treatment tape 30 from coming off when the user pulls the post-treatment tape 30.

However, without being limited to the above, the post-treatment tape 30 may have a region that overlaps with the vertical expansion / contraction region 40 when the unfolded napkin 1 is viewed in a plan view. That is, as shown in the modified example of FIG. 6A, at least a part of the post-treatment tape 30 may overlap with the vertical expansion / contraction region 40 located on the rear side of the napkin 1 in the vertical direction.

In this case, the fixing portion 33 (root portion) of the post-treatment tape 30 overlaps with the vertical expansion / contraction region 40 or is located near the vertical expansion / contraction region 40. Therefore, when the post-treatment tape 30 is pulled, the vertical expansion / contraction region 40 is likely to be stretched, and the post-treatment tape 30 is likely to be stretched to the outside.
Further, since the napkin 1 is also wound around the post-treatment tape 30 while extending in the vertical direction, it can be rolled more compactly and strongly.

In addition, in the case of FIG. 6A, in order from the inseam side, the vertical expansion / contraction region 40 does not overlap with the post-treatment tape 30, the vertical expansion / contraction region 40 overlaps with the post-processing tape 30, and the region where the vertical expansion / contraction region 40 does not exist. Line up in the vertical direction. Therefore, the influence of the contraction caused by the vertical expansion / contraction region 40 is gradually suppressed from the inseam side to the upper side, and the discomfort during wearing can be reduced.

Further, it is preferable that the post-treatment tape 30 has a region that does not overlap with the absorbent core 11 but overlaps with the absorbent main body 10 when the unfolded napkin 1 is viewed in a plan view. That is, as shown in FIG. 5A, at least a part of the post-treatment tape 30 is located above the upper end of the absorbent core 11 located behind the napkin 1 and is located behind the napkin 1. It is preferable that the absorbent body 10 overlaps with the main body 10 in the vertical direction.

In this case, the absorbent main body 10 located closer to the skin than the post-treatment tape 30 makes it difficult for the wearer to feel the hardness of the post-treatment tape 30, and the wearing comfort is improved. Further, the fixing portion 33 (root portion) of the post-treatment tape 30 is located at a place where the fixing portion 33 (root portion) overlaps with the absorbent main body 10 or is close to the absorbent main body 10, that is, a place having high rigidity. Therefore, for example, the post-treatment tape 30 is less likely to wobble when the post-treatment tape 30 is pulled, as compared with the case where the post-treatment tape 30 overlaps only the exterior member 20. Therefore, the post-treatment tape 30 is likely to be pulled straight in the longitudinal direction thereof. However, the present invention is not limited to the above, and the post-treatment tape 30 may be located above the absorbent body 10.

In addition, the post-treatment tape 30 is provided at the upper position of the napkin 1 in the above case (FIG. 5A), for example, as compared with the case of the modification of FIG. 6A. The longer the post-treatment tape 30 is provided at the upper position of the napkin 1, the longer the length of the post-treatment tape 30 protruding from the upper end of the napkin 1 when the post-treatment tape 30 is extended in the vertical direction can be increased. Alternatively, even if the length of the post-treatment tape 30 is shortened, the post-treatment tape 30 having a desired length can be projected from the upper end of the napkin 1.

However, not limited to the above, the post-treatment tape 30 may have a region overlapping with the absorbent core 11 when the unfolded napkin 1 is viewed in a plan view. That is, as shown in FIG. 6A, at least a part of the post-treatment tape 30 may overlap with the absorbent core 11 located at the rear side of the napkin 1 in the vertical direction.

In this case, the absorbent core 11 located closer to the skin than the post-treatment tape 30 makes it more difficult for the wearer to feel the hardness of the post-treatment tape 30, and the wearing comfort is improved. Further, the fixing portion 33 (root portion) of the post-treatment tape 30 is located at a place where the fixing portion 33 (root portion) overlaps with the absorbent core 11 or is close to the absorbent core 11, that is, a place having higher rigidity. Therefore, when the post-treatment tape 30 is pulled, the post-treatment tape 30 is less likely to wobble, and the post-treatment tape 30 is easily pulled straight in the longitudinal direction thereof.

Further, in the above case, the fixing portion 33 (root portion) of the post-treatment tape 30 has the upper end of the absorbent core 11 on the side where the post-treatment tape 30 is provided (here, the rear side) in the front-rear direction of the napkin 1. It is good if it is provided across.

By doing so, as shown in FIG. 6B, the fixing portion 33 of the post-treatment tape 30 is located at the step portion generated by the thickness of the absorbent core 11, and the fixing portion 33 positions the upper end of the absorbent core 11. It bends in the thickness direction (front-back direction) at the base point. Therefore, it becomes easy to pull out the post-treatment tape 30 (picking portion 32).

Further, the upper end of the absorbent core 11 tends to be a bending point when rolling the used napkin 1. Therefore, when the fixing portion 33 of the post-processing tape 30 straddles the bending point, the fixing portion 33 also becomes easy to bend. Then, the post-treatment tape 30 is likely to be bent in the direction in which the napkin 1 is rolled, and the post-treatment tape 30 is easily wrapped around the rolled napkin 1.

Further, as shown in FIG. 6A, the exterior member 20 has a boundary position p1 in the vertical direction in which the number of laminated materials changes. For example, the sheet members are laminated in four layers above the boundary position p1, and the sheet members are laminated in three layers below the boundary position p1. This boundary position p1 also tends to be a bending point when rolling the used napkin 1.

Therefore, it is preferable that the fixing portion 33 of the post-treatment tape 30 is provided so as to straddle the boundary position p1 in the exterior member 20 on the side where the post-treatment tape 30 is provided (here, the rear side) in the front-rear direction of the napkin 1. By doing so, the fixing portion 33 of the post-treatment tape 30 is easily bent at the boundary position p1. Then, the post-treatment tape 30 is likely to be bent in the direction in which the napkin 1 is rolled, and the post-treatment tape 30 is easily wrapped around the rolled napkin 1.

Further, as shown in FIG. 5A, the knob portion 32 of the post-treatment tape 30 is located in the front-rear direction of the napkin 1 with respect to the upper end of the absorbent body 10 on the side where the post-treatment tape 30 is provided (here, the rear side). It is preferably provided on the upper side.

That is, it is preferable that the knob portion 32 is provided in a region where the exterior member 20 does not overlap with the absorbent main body 10 in the thickness direction. The region where the exterior member 20 does not overlap with the absorbent main body 10 in the thickness direction has low rigidity and is easily bent with respect to the knob portion 32. Therefore, it becomes easier for the user to pick the picking portion 32.

Further, when the post-treatment tape 30 is provided on the rear portion of the napkin 1, the following may be preferable. That is, the vertical length L1 (see FIG. 2) from the lower end of the napkin 1 to the upper end of the absorbent core 11 on the rear side is the vertical length from the lower end of the napkin 1 to the upper end of the absorbent core 11 on the front side. It is preferably longer than L2. In the napkin 1 illustrated in FIG. 2, the position of the center line CL that bisects the napkin 1 in the longitudinal direction corresponds to the lower end of the napkin 1.

When the post-treatment tape 30 is provided on the rear side of the napkin 1, the user rolls the used napkin 1 so that the front portion of the napkin 1 is on the inside. Therefore, by increasing the length of the absorbent core 11 on the rear side, the napkin 1 is arranged so that the skin side surface of the absorbent core 11 on the rear side protruding upward from the absorbent core 11 on the front side is on the inside. It is rolled up. That is, the napkin 1 is rolled so that the absorption surface that has absorbed the excrement liquid, which protrudes upward from the absorption core 11 on the front side, is on the inside. Therefore, in the rolled napkin 1, the exudation of the excrement can be suppressed, and the wearer's hands, the trash can, and the like are less likely to get dirty.

The lower end of the napkin 1 is a folded portion in which the unfolded napkin 1 is folded in half in the longitudinal direction, and may be confirmed with the shorts-shaped napkin 1. Further, the position of the lower end of the napkin 1 is not limited to the position of the center line CL in the longitudinal direction of the napkin 1, and may deviate from the position of the center line CL. Further, not limited to the above, the vertical length from the lower end of the napkin 1 to the upper end of the absorbent core 11 on the rear side is the vertical length from the lower end of the napkin 1 to the upper end of the absorbent core 11 on the front side. It may be less than or equal to.

Further, as shown in FIG. 7, the napkin 1 may have squeezed portions 51 to 53 in which the absorbent core 11 is squeezed in the thickness direction thereof. In the pressed portions 51 to 53, the thickness of the absorbent core 11 is thinner than that of the surroundings, and the fiber density constituting the absorbent core 11 is high. These points can be confirmed visually or by observing a cross section of the absorbent core 11 cut in the thickness direction with an electron microscope or the like.

In the squeezed portions 51 to 53, at least a part of the absorbent core 11 in the thickness direction may be squeezed. Further, the absorbent core 11 may be squeezed from the skin side or may be squeezed from the non-skin side. Further, only the absorbent core 11 may be squeezed, or the absorbent core 11 may be squeezed together with the surface sheet 13, the leak-proof sheet 14, and the like.

The napkin 1 exemplified in FIG. 7 has a linear first squeezing portion 51 provided at the upper end portion of the absorbent core 11 and extending in the left-right direction, and a vertical direction provided on both sides of the absorbent core 11 in the width direction. It has a pair of linear second squeezing portions 52 extending to the surface and a third squeezing portion 53 provided over the entire plane of the absorbent core 11. The third squeezing portion 53 is a squeezing portion in which a plurality of linear squeezing portions extending in the vertical direction while meandering in the horizontal direction are arranged in the horizontal direction.

However, the squeezed portions 51 to 53 illustrated in FIG. 7 are examples, and the shapes, numbers, and arrangements of the squeezed portions 51 to 53 are not limited thereto. Further, the linear pressing portions 51 to 53 may be those in which a plurality of dot-shaped pressing portions are lined up in a linear manner, or are groove-shaped pressing portions in which the absorbent core 11 is continuously recessed. You may. Further, a plurality of dot-shaped squeezed portions may be dispersedly arranged.

The post-treatment tape 30 preferably has a region that overlaps with the squeezed portions 51 to 53 when the unfolded napkin 1 is viewed in a plan view. In FIG. 7, the post-treatment tape 30 overlaps the first pressing portion 51 and the third pressing portion 53 in the thickness direction. The absorbent core 11 provided with the squeezed portions 51 to 53 has higher rigidity than the absorbent core 11 not provided with the squeezed portions 51 to 53. Therefore, the pressing portions 51 to 53 of the absorbent core 11 located on the skin side of the post-treatment tape 30 make it difficult for the wearer to feel the hardness of the post-treatment tape 30, and the wearing comfort is improved. Further, a place where the fixing portion 33 (root portion) of the post-treatment tape 30 overlaps with the squeezed portions 51 to 53 of the absorbent core 11 or is close to the squeezed portions 51 to 53 of the absorbent core 11, that is, a place having high rigidity. Located in. Therefore, when the post-treatment tape 30 is pulled, the post-treatment tape 30 is less likely to wobble, and the post-treatment tape 30 is easily pulled straight in the longitudinal direction thereof.

Further, as shown in FIGS. 2 and 3, a plurality of welding portions 17 (first welding portions) into which materials are welded are provided at the upper end portion of the absorbent main body 10. In FIG. 3, the surface sheet 13 and the outer layer sheet 15 are welded by the welded portion 17. Since the upper end portion of the absorbent main body 10 is firmly sealed by the welding portion 17, even if the absorbent core 11 absorbs the excrement and swells, it is possible to prevent the upper end portion of the absorbent main body 10 from opening.

The post-treatment tape 30 preferably has a region that overlaps with the welded portion 17 when the unfolded napkin 1 is viewed in a plan view. Therefore, the welding portion 17 located on the skin side of the post-treatment tape 30 makes it difficult for the wearer to feel the hardness of the post-treatment tape 30, and the wearing comfort is improved. Further, the fixing portion 33 (root portion) of the post-treatment tape 30 is located at a place where the fixing portion 33 (root portion) overlaps with the welded portion 17 or is close to the welded portion 17, that is, a place having high rigidity. Therefore, when the post-treatment tape 30 is pulled, the post-treatment tape 30 is less likely to wobble, and the post-treatment tape 30 is easily pulled straight in the longitudinal direction thereof.

Further, the post-treatment tape 30 has a rectangular shape in a folded state, and has a longitudinal direction and a width direction orthogonal to each other. The line connecting the center of the upper end of the post-treatment tape 30 and the center of the lower end of the post-treatment tape 30 is the longitudinal direction, and the direction orthogonal to the longitudinal direction is the width direction.

In the napkin 1 shown in FIG. 1, the longitudinal direction of the post-treatment tape 30 and the vertical direction of the napkin 1 are aligned. In this case, when the upper end portion and the lower end portion of the used napkin 1 have a small deviation in the left-right direction and are neatly rolled, the post-treatment tape 30 extending in the vertical direction of the napkin 1 is wound around the center portion in the left-right direction of the napkin 1. And fixed.

However, not limited to the above, as shown in FIG. 8A, the longitudinal direction (direction along the center line CL3) of the post-treatment tape 30 is inclined with respect to the vertical direction (direction along the center line CL2) of the napkin 1. You may. As shown in FIG. 8B, the lower end portion of the napkin 1 may be displaced and rounded in the left-right direction with respect to the upper end portion. Therefore, when the post-treatment tape 30 is tilted toward the side where the lower end portion is displaced in the left-right direction with respect to the upper end portion of the napkin 1 (right side in FIG. 8B), the post-treatment tape 30 is tilted with respect to the vertical direction of the napkin 1. The post-treatment tape 30 extending in the direction is wound around the center portion in the left-right direction of the napkin 1 and fixed. Then, the rolled state is easily maintained, and the absorption surface of the excrement liquid is less likely to be exposed.

The vertical direction of the napkin 1 is, for example, in the expanded and extended state of the napkin 1 (FIG. 2), the center point in the left-right direction of one end in the longitudinal direction and the left-right direction of the other end in the longitudinal direction. A center point may be defined, and the direction along the line connecting the two center points (center line CL2) may be the vertical direction. Alternatively, in the natural state napkin 1 (FIG. 8), the center point of the line connecting the upper end of one side joint SS and the upper end of the other side joint SS of the pair of side joint SS, and one side. The center point of the line connecting the lower end of the joint portion SS and the lower end of the other side joint portion SS may be defined, and the direction along the line connecting the two center points (center line CL2) may be the vertical direction.

=== Second embodiment ===
FIG. 9 is a schematic plan view of the napkin 5 of the second embodiment as viewed from the non-skin side. The napkin 5 of the second embodiment has a different configuration of the exterior member 60 as compared with the napkin 1 of the first embodiment.
Since the other configurations are the same as those of the diaper 1 of the first embodiment, the description thereof will be omitted.

The exterior member 60 of the second embodiment includes a first exterior sheet 61 located on the non-skin side, a second exterior sheet 62 located on the skin side, and an elastic sheet 63 (for example, an elastic non-woven fabric) located between them. And elastic film). These sheets 61 to 63 are joined by a plurality of welded portions 64a and 64b (second welded portions) in a state where the elastic sheet 63 is extended in the left-right direction. As a result, the exterior member 60 expands and contracts in the left-right direction at the waist circumference portions 2 and 4, and can be loosely fitted to the wearer on the surface. Examples of the welding method in the welded portions 64a and 64b include well-known welding methods such as heat welding and ultrasonic welding.

In this way, when the first exterior sheet 61 and the second exterior sheet 62 are joined by a plurality of welded portions 64a and 64b, as shown in FIG. 9, the fixing portion 33 of the post-treatment tape 30 is in an expanded state. When the napkin 1 is viewed in a plan view, it is preferable to have a region overlapping with the welded portions 64a and 64b.

The region of the exterior member 60 where the welded portions 64a and 64b are provided becomes flat. Therefore, the fixing portion 33 of the post-treatment tape 30 can be firmly fixed to the exterior member 60. Therefore, when the post-treatment tape 30 is pulled, the post-treatment tape 30 is difficult to come off. Further, for example, the first exterior sheet 61 and the second exterior sheet 62 are joined by the welded portions 64a and 64b as compared with the case where the first exterior sheet 61 and the second exterior sheet 62 are joined by an adhesive. The stronger the bonding strength of the sheet. Therefore, when the post-treatment tape 30 is pulled, the first exterior sheet 61 and the second exterior sheet 62 do not separate, and the rolled napkin 1 can be firmly fixed by the post-treatment tape 30.

Further, the area ratio of the welded portions 64a and 64b (the ratio of the area of the welded portions 64a and 64b to the unit area) may be different depending on the position of the exterior member 60. For example, the area ratio of the welded portions 64a and 64b may be changed between the region X which is a region overlapping the absorbent main body 10 in the thickness direction and the other region Y. As shown in FIG. 9, the area ratio of the welded portion 64a in the region X should be higher than the area ratio of the welded portion 64b in the region Y. The larger the area ratio of the welded portions 64a and 64b, the lower the elasticity of the exterior member 60.

In the above case, in the region X of the exterior member 60 that overlaps the absorbent body 10 in the thickness direction, the elasticity of the exterior member 60 is appropriately suppressed, and the absorbent body 10 and the absorbent core 11 shrink in the width direction. It can be suppressed. Therefore, the absorption area of the absorbent core 11 can be secured, and the wrinkles generated in the absorbent main body 10 due to the shrinkage can suppress the formation of a gap between the absorbent core 11 and the wearer.

Further, in FIG. 9, the post-treatment tape 30 is provided above the upper end of the absorbent core 11 on the side (rear side) where the post-treatment tape 30 is provided in the front-rear direction of the napkin 5. In this case, the post-treatment tape 30 is more susceptible to the elastic force of the exterior member 60 than the case where the post-treatment tape 30 overlaps the absorbent core 11 in the thickness direction.

Therefore, in the region of the waistline portion of the exterior member 60 that overlaps with the post-processing tape 30 in the vertical direction, the central portion 60C in the left-right direction may have a smaller expansion / contraction force than the end portion 60S in the left-right direction. That is, it is preferable that the central portion 60C in the left-right direction has a smaller force for extending the unit length in the left-right direction in the region of the unit width in the vertical direction than the end portion in the left-right direction.

The post-treatment tape 30 overlaps the vertical expansion / contraction region 40 provided across the center line CL2 in the left-right direction of the napkin 5 in the left-right direction. Therefore, the post-treatment tape 30 is located at the central portion 60C in the left-right direction where the expansion / contraction force in the left-right direction is small, and is less likely to be affected by the expansion / contraction force in the left-right direction of the exterior member 60. Therefore, when the post-treatment tape 30 is pulled in the vertical direction of the napkin 5, it is possible to prevent the post-treatment tape 30 from swaying in the left-right direction due to the expansion and contraction force in the left-right direction of the exterior member 60. Therefore, the post-treatment tape 30 can be pulled straight in the longitudinal direction thereof.

The method of measuring the expansion / contraction force of the exterior member 60 (the force for extending the unit length in the left-right direction in the unit width region) can be performed by a well-known method, for example, using a tensile tester. Method can be mentioned. First, the exterior member 60 is separated from the napkin 1 using toluene or the like, and the exterior member 60 is dried. Of the exterior member 60, a region Z where the position in the vertical direction overlaps with the post-treatment tape 30 is cut out. The region Z of the cut out exterior member 60 is divided into three equal parts in the left-right direction. Then, one sample of the central portion 60C in the left-right direction and two samples of the end portion 60S in the left-right direction are prepared. The chuck of the tensile tester sandwiches both ends of the sample in the direction corresponding to the left-right direction of the napkin 1. The load obtained when the sample is stretched with the chucks separated by a unit length is measured. This value is taken as the expansion / contraction force of the exterior member 60. The expansion / contraction force of the end portion 60S in the left-right direction is the average value of the values measured by the two samples.

=== About the individual package (packaging) of napkin 1 ===
10A to 10C are views showing an example of a folding method of the napkin 1 at the time of packaging.
11A and 11B are explanatory views of the individual package 70 of the napkin 1.

The napkin 1 (including the napkin 5 of the second embodiment) is distributed in the state of the napkin 1 and the package 70 having the packaging material 71 for packaging the napkin 1, thereby ensuring the hygiene aspect of the napkin 1. .. As shown in FIG. 11A, one napkin 1 may be an individual package 70 individually packaged in one package material 71, or, although not shown, a plurality of napkins 1 may be one package material (not shown). It may be a package contained in a bag).

It is preferable that the napkin 1 is folded so that the post-treatment tape 30 is not exposed in the state of being encapsulated in the packaging material 71. Therefore, the folding method shown in FIGS. 10A to 10C can be exemplified. First, as shown in FIG. 10A, at the folding position FL1, both sides of the napkin 1 in the left-right direction overlap with the rear side parts of the napkin 1 (the surface on which the post-treatment tape 30 is provided) in the left-right direction. Fold inside. Next, the napkin 1 in the state of FIG. 10A is folded in half in the vertical direction at the folding position FL2 so that the surface on which the post-treatment tape 30 is provided is on the inside. In FIG. 10C folded in this way, the post-treatment tape 30 is not exposed to the outside. In this state, as shown in FIG. 11A, it may be individually packaged with the packaging material 71, or may be encapsulated in the packaging material (bag body) together with the plurality of napkins 1.

By doing so, it is difficult for an external force to be applied to the post-treatment tape 30 when the napkin 1 is distributed, when the napkin 1 is carried by the user, and the like, and it is possible to prevent the post-treatment tape 30 from being broken or peeled off. In particular, in the case of the individual package shown in FIG. 11A, a margin is often provided between the packaging material 71 (packaging sheet 711) and the napkin 1, and the napkin 1 easily moves inside the packaging material 71. Also in this case, since the post-treatment tape 30 is not exposed to the outside, rubbing between the post-treatment tape 30 and the packaging material 71 can be suppressed.

However, the folding method is not limited to the above. For example, in the case of the napkin 1 having a large size, the length in the left-right direction from the folding position FL1 shown in FIG. 10A to the side joint portion SS becomes long. Therefore, by folding both sides of the napkin 1 in the left-right direction inward in the left-right direction at the folding position FL1, the post-treatment tape 30 can be covered with both sides of the napkin 1, and the post-treatment tape 30 is not exposed to the outside. .. Therefore, it is not necessary to fold the napkin 1 in the vertical direction at the folding position FL2. Further, the napkin 1 may be folded and wrapped with the packaging material 71 so that the post-treatment tape 30 is exposed.

Further, the packaging material 71 exemplified in FIG. 11A has a rectangular packaging sheet 711, a central sealing portion 712 for forming the packaging sheet 711 into a cylindrical shape, and both side portions of the tubular packaging sheet 711 (first direction). It has a pair of side sealing portions 713,714 (sealing portions) that seal the openings. The sealing portions 712 to 714 can be formed by, for example, a plurality of welding patterns.

In the case of such a packaging material 71, it is preferable that one of the pair of side sealing portions 713 and 714 has a stronger peel strength than the other. For example, it is assumed that the lower side sealing portion 714 in the first direction has stronger peel strength than the upper side sealing portion 713.

In this case, the user can easily open the individual package 70 and take out the napkin 1 by opening the upper side sealing portion 713 having a weak peeling strength. The packaging sheet 711 may be provided with an indication that guides the user to open the upper side sealing portion 713. On the other hand, the lower side sealing portion 714 having strong peel strength is likely to be maintained in a sealed state. Therefore, it becomes easy to put the used napkin 1 in the packaging material 71 from which the new napkin 1 is taken out. As shown in FIG. 11B, the used napkin 1 is easily disposed of in a state where it is inserted through the opening H of the packaging material 71 and wrapped in the packaging sheet 711. As a result, it is possible to prevent the user's hands, the trash can, and the like from being contaminated by the excrement liquid absorbed by the used napkin 1.

The method for measuring the peel strength of the pair of side sealing portions 713 and 714 can be performed by a well-known method. For example, the following method using a tensile tester can be mentioned.
First, a portion including the pair of side sealing portions 713 and 714 is cut from the package 70 to prepare a sample. The side sealing portions 713 and 714 are peeled off and opened in the first direction orthogonal to the second direction along which the side sealing portions 713 and 714 are aligned. Therefore, a sample having a predetermined length (for example, 25 mm) is prepared in the second direction. Further, it is cut so as to include a portion where the side sealing portions 713 and 714 do not exist (a portion having a predetermined length facing inward in the first direction from the side sealing portions 713 and 714).
Then, the portions of the sample in which the side sealing portions 713 and 714 do not exist (the portions of the packaging sheet 711 bifurcated from the side sealing portions 713 and 714) are each gripped by a pair of chucks of the tensile tester.
Then, the load of the tensile tester is adjusted to zero and the measurement is started. The tensile speed is, for example, about 100 mm / min, and the maximum load during the period when the side sealing portions 713 and 714 are peeled off is read. If each sample is measured multiple times, the average value of the maximum load is obtained. This maximum load may be compared as the peel strength when the side sealing portions 713 and 714 are peeled off in the first direction.

=== Other embodiments ===
As described above, the above-described embodiment is for facilitating the understanding of the present invention, and is not for limiting and interpreting the present invention. It goes without saying that the present invention can be changed and improved without departing from the spirit thereof, and the present invention includes its equivalents.

1 napkin (shorts type napkin),
2 Front waistline, 3 Inseam, 4 Rear waistline,
5 napkins (shorts type napkins),
10 absorbent body, 11 absorbent core, 12 core wrap,
13 Surface sheet,
14 Leakage-proof sheet (liquid impermeable sheet),
15 Outer layer sheet (non-skin side sheet),
16 Leakage-proof wall elastic member,
17 Welding part (first welding part),
20 Exterior members,
21 1st exterior sheet, 22 2nd exterior sheet, 23 3rd exterior sheet,
30 Post-treatment tape, 31 Tape body,
32 knob, 33 fixed part,
40 Vertical expansion and contraction area, 41 Vertical elastic member,
51 squeezing part, 52 squeezing part, 53 squeezing part,
60 exterior members,
61 1st exterior sheet, 62 2nd exterior sheet, 63 3rd exterior sheet,
64a, 64b Welding part (second welding part),
70 wrapping body, 71 wrapping material,
711 packaging sheet, 712 central seal,
713 Side sealing part (sealing part), 714 Side sealing part (sealing part)

Claims (12)

It has a vertical direction, a horizontal direction, and a front-back direction.
A shorts-type napkin having an absorbent core, a liquid-impermeable sheet located on the non-skin side of the absorbent core, and a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet. There,
The shorts-type napkin has a vertically stretchable region that expands and contracts in the vertical direction at least a part of the lower crotch, and a post-treatment tape.
The vertical expansion / contraction region is provided between the liquid impermeable sheet and the non-skin side sheet so as to straddle a center line that bisects the shorts type napkin in the left-right direction.
In the left-right direction, at least a part of the post-treatment tape overlaps with the vertical expansion / contraction region.
The post-treatment tape has a longitudinal direction and a width direction.
A shorts-type napkin characterized in that the longitudinal direction of the post-treatment tape is inclined with respect to the vertical direction of the shorts-type napkin. The shorts type napkin according to claim 1.
The post-treatment tape is a shorts type napkin provided above the upper end of the vertical expansion / contraction region on the side where the post-treatment tape is provided in the front-rear direction. The shorts type napkin according to claim 1 or 2.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
The post-treatment tape is a shorts-type napkin having a region that does not overlap with the absorbent core but overlaps with the absorbent body when the shorts-type napkin in the unfolded state is viewed in a plan view. The shorts type napkin according to any one of claims 1 to 3.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
The exterior member expands and contracts in the left-right direction at the waist circumference portion that corresponds to the waist circumference of the wearer.
The post-treatment tape is provided above the upper end of the absorbent core on the side where the post-treatment tape is provided in the front-rear direction.
In the region of the waist circumference portion that overlaps with the post-processing tape in the vertical direction, the central portion in the left-right direction has a unit length in the left-right direction as compared with the end portion in the left-right direction. A shorts-type napkin characterized by a small force to stretch the sword. The shorts type napkin according to any one of claims 1 to 4.
The shorts-type napkin has a squeezed portion in which the absorbent core is squeezed in the thickness direction thereof.
The post-treatment tape is a shorts-type napkin characterized by having a region overlapping the squeezed portion when the shorts-type napkin in an unfolded state is viewed in a plan view. The shorts type napkin according to any one of claims 1 to 5.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
The exterior member has the vertical boundary position where the number of laminated materials changes.
The post-treatment tape has a fixing portion fixed to the non-skin side surface of the shorts type napkin.
The shorts-type napkin is characterized in that the fixing portion is provided so as to straddle the boundary position on the side where the post-treatment tape is provided in the front-rear direction. The shorts type napkin according to any one of claims 1 to 6.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
The post-treatment tape has a knob that does not have an adhesive surface and has a knob.
A shorts-type napkin characterized in that the knob is provided above the upper end of the absorbent body on the side where the post-treatment tape is provided in the front-rear direction. The shorts type napkin according to any one of claims 1 to 7.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
A first welded portion to which the material is welded is provided at the upper end portion of the absorbent main body.
The post-treatment tape is a shorts-type napkin having a region overlapping with the first welded portion when the shorts-type napkin in an unfolded state is viewed in a plan view. The shorts type napkin according to any one of claims 1 to 8.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
The exterior member includes a first exterior sheet, a second exterior sheet, and a plurality of second welded portions for welding the first exterior sheet and the second exterior sheet.
The post-treatment tape has a fixing portion fixed to the non-skin side surface of the shorts type napkin.
The shorts-type napkin is characterized in that the fixed portion has a region overlapping the second welded portion when the shorts-type napkin in a deployed state is viewed in a plan view. The shorts type napkin according to claim 1.
The shorts-type napkin has an absorbent body having the absorbent core and an exterior member located on the non-skin side of the absorbent body.
In the left-right direction, the entire post-treatment tape overlaps the vertical expansion / contraction region.
The post-treatment tape has a region that does not overlap with the vertically stretchable region and the absorbent core but overlaps with the absorbent body when the shorts-type napkin in the unfolded state is viewed in a plan view.
The post-treatment tape is provided at a portion on the rear side of the shorts-type napkin.
The vertical length from the lower end of the shorts type napkin to the upper end of the absorbent core on the rear side is longer than the vertical length from the lower end to the upper end of the absorbent core on the front side. Shorts type napkin to be. The shorts type napkin according to any one of claims 1 to 10.
A packaging material for wrapping the shorts-type napkin, and a package for the shorts-type napkin.
The shorts-type napkin is a package of shorts-type napkins, characterized in that the post-treatment tape is folded so as not to be exposed in a state of being encapsulated in the packaging material. Shorts type napkin and
An individual package of shorts-type napkins, comprising a packaging material for individually wrapping the shorts-type napkins.
The shorts type napkin is
It has a vertical direction, a horizontal direction, and a front-back direction.
An absorbent core, a liquid-impermeable sheet located on the non-skin side of the absorbent core, a non-skin-side sheet located on the non-skin side of the liquid-impermeable sheet, and at least a part of the inseam. It has a vertical expansion / contraction area that expands and contracts in the vertical direction, and a post-treatment tape.
The vertical expansion / contraction region is provided between the liquid impermeable sheet and the non-skin side sheet so as to straddle a center line that bisects the shorts type napkin in the left-right direction.
In the left-right direction, at least a part of the post-treatment tape overlaps with the vertical expansion / contraction region.
The packaging material has a pair of sealing portions that seal the openings on both sides of the tubular packaging sheet.
An individual package of shorts-type napkins, characterized in that one of the pair of sealing portions has a stronger peel strength than the other.

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