JP2023088416A - Package of absorbent article - Google Patents

Abstract

To provide a package of an absorbent article having an excellent opening property.SOLUTION: A package of an absorbent article comprises an absorbent article, a release sheet and a packaging sheet. The absorbent article comprises: a front surface sheet; a rear surface sheet; an absorber arranged between the front surface sheet and the rear surface sheet; and an adhesive part disposed on a non-skin side surface of the rear surface sheet, and has a longitudinal direction corresponding to a front-back direction of a wearer, a lateral direction orthogonal to the longitudinal direction, and a thickness direction orthogonal to the longitudinal direction and the lateral direction. The release sheet covers the adhesive part and is configured to be releasable from the adhesive part. The packaging sheet is fixed to the release sheet and packages the absorbent article. The absorber has a dent portion dent toward a front surface sheet side together with a rear surface sheet. An edge of the adhesive part is partially overlapped on the dent portion in a plane view viewed from the thickness direction of the absorbent article.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to an absorbent article package in which absorbent articles are individually wrapped.

As a package for absorbent articles, a form using a release sheet is known, as described in Patent Document 1, for example. The release sheet is a sheet that covers the adhesive portion for fixing the absorbent article. The adhesive portion is provided on the non-skin surface side of the absorbent article, and the release sheet is provided so as to cover the adhesive portion. Moreover, the release sheet is joined to the packaging sheet, and when the user peels off the packaging sheet, the release sheet is also peeled off at the same time.

Japanese Patent Application Laid-Open No. 2021-65568

In the case where it is difficult to peel off the release sheet from the adhesive portion of the absorbent article package, it may be difficult to open the absorbent article package.

An object of the present invention is to provide a package for absorbent articles that is excellent in unsealability.

A package for absorbent articles according to one aspect of the present invention includes an absorbent article, a release sheet, and a packaging sheet.
The absorbent article packaging body is a packaging body in which the absorbent article is wrapped with the packaging sheet to which the release sheet is fixed.
The absorbent article has a topsheet, a backsheet, an absorbent body arranged between the topsheet and the backsheet, and an adhesive portion provided on the non-skin side of the backsheet.
The adhesive portion is releasably covered with the release sheet.
The absorbent body is recessed toward the top sheet side together with the back sheet, and has a recess portion that partially overlaps the edge of the adhesive portion when viewed from above in the thickness direction.

According to the absorbent article package of the present invention, excellent unsealability can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an absorbent article and its package according to a first embodiment of the present invention as seen from the side of the skin, and shows the configuration of the package before folding and after opening. FIG. 2 is a plan view of the absorbent article and its package shown in FIG. 1 as viewed from the non-skin side, and shows the configuration of the absorbent article seen through the release sheet and the packaging sheet. Fig. 2 is a plan view of the absorbent body of the absorbent article of the first embodiment as seen from the non-skin side, in which the abdominal side of the region facing the excretory part of the wearer when worn is forward, and the excretory part faces the wearer. The dorsal side of the region is illustrated as the rear side. FIG. 3 is a cross-sectional view of the absorbent article cut along line IV-IV in FIG. 2; FIG. 3 is a cross-sectional view of the absorbent article cut along line VV in FIG. 2; Fig. 2 is a plan view showing a configuration in which the absorbent article package of the first embodiment is folded. FIG. 7 is a cross-sectional view of the absorbent article cut along line VII-VII of FIG. 6;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Overall configuration of napkin]
The absorbent article 1 of the first embodiment of the present invention comprises a main body M and a pair of wing portions W, as shown in FIG. The absorbent article 1 is configured as a sanitary napkin and is hereinafter referred to as napkin 1 . The napkin 1 is configured to be able to be fixed to the wearer's clothes by an adhesive portion 15, which will be described later.
The napkin 1 has a longitudinal direction X corresponding to the front-rear direction of the wearer and a lateral direction Y corresponding to the left-right direction of the wearer and orthogonal to the longitudinal direction X. As shown in FIG. Furthermore, the napkin 1 has a thickness direction Z orthogonal to both the longitudinal direction X and the lateral direction Y. As shown in FIG. Also, the wearer side in the thickness direction Z may be described as the thickness direction Z upper side, and the side opposite to the wearer in the thickness direction Z may be described as the thickness direction Z lower side.

As shown in FIG. 1, the napkin 1 has a front region M1, a middle region M2 and a rear region M3 which are positioned in sequence in the longitudinal direction. The middle area M2 is an excretory part facing area that mainly faces the wearer's excretory part when worn. In a sanitary napkin, the excretory part is the vaginal opening. The front region M1 is a region located on the ventral side of the wearer's excretory part when worn. The rear region M3 is a region located on the dorsal side of the wearer's excretory part when worn.

The main body M extends along the longitudinal direction X and is secured to the inner surface of the wearer's clothing when worn. The body M has an absorber 10, which will be described later, and has a function of absorbing liquid excretion such as menstrual blood of the wearer.
The pair of wing portions W are configured to face each other in the width direction across the main body M in the intermediate region M2 and protrude greatly outward in the width direction.
The wing portion W is bent so as to face the main body M with the underwear sandwiched therebetween when worn, and is fixed to the outer surface of the wearer's underwear. The wing portion W prevents the position of the napkin 1 from slipping while it is being worn, and prevents excrement from leaking out of the napkin 1 . In addition, in a sanitary napkin having wings W, it is desirable that the region in the longitudinal direction X sandwiched between the front and rear base portions of the wings W be the middle region M2.

As shown in FIGS. 1, 2, 4, and 5, the napkin 1 includes an absorbent body 10, a topsheet 12, a backsheet 13, a pair of sidesheets 14, and an adhesive portion 15. In the main body M, the napkin 1 has a structure in which a back sheet 13, an absorbent body 10 and a top sheet 12 are laminated in the thickness direction Z. As shown in FIG. These structures are appropriately joined and integrated, for example, by joining with an adhesive, heat sealing, or the like, or by compressing the leak-proof grooves 4, which will be described later.
Below, regarding each member constituting the napkin 1, the surface facing the wearer's skin is referred to as the skin side, and the surface opposite to the surface facing the wearer's skin is referred to as the non-skin side.

The absorbent body 10 extends along the longitudinal direction X and is arranged between the topsheet 12 and the backsheet 13 . The absorbent body 10 absorbs excrement from the surface on the surface sheet 12 side, diffuses it inside, and retains the excrement. The structure of the absorbent body 10 will be described later.

The surface sheet 12 is configured as a liquid-permeable sheet material, and is arranged above the absorbent body 10 in the thickness direction Z. As shown in FIG.
As shown in FIG. 4, the surface sheet 12 has, for example, a plurality of protrusions 12a protruding upward. The convex portion 12a may have a solid structure in which fibers are distributed inside, or may have a hollow structure in which almost no fibers are present inside. The convex portions 12a can reduce the contact area between the wearer's skin and the topsheet 12 when worn, thereby increasing breathability and reducing discomfort.

The back sheet 13 is arranged below the absorber 10 in the thickness direction Z. As shown in FIG. The backsheet 13 is joined to the topsheet 12 and the sidesheets 14, for example, at the peripheral edges thereof by means of an adhesive, heat sealing, or the like.
The back sheet 13 is formed of a sheet material having functions such as liquid impermeability, water vapor permeability, and water repellency, for example. As the sheet material, for example, a thermoplastic resin film, a laminate of the film and a nonwoven fabric, or the like can be used.

The pair of side sheets 14 are arranged on the lateral Y peripheral edge of the napkin 1 and face each other in the lateral direction Y with the topsheet 12 interposed therebetween. The side sheet 14 is joined to the top sheet 12 with an adhesive or the like in the horizontal direction Y. As shown in FIG. As the material of the side sheet 14, a sheet material having a lower hydrophilicity than the surface sheet 12 is preferable. Specifically, a nonwoven fabric, a film material, and a sheet having a laminated structure of a nonwoven fabric and a film material have a lower hydrophilicity than the surface sheet. are mentioned.

The adhesive portion 15 is provided on the non-skin side of the backsheet 13 and functions as a non-slip material that fixes the napkin 1 to clothing. Here, the non-skin side of the backsheet 13 is the side opposite to the side facing the absorbent body 10 of the backsheet 13, and is the side that comes into contact with the wearer's clothes.
The adhesive portion 15 is formed, for example, by coating the backsheet 13 with an adhesive in a predetermined pattern. As the adhesive used for the adhesive portion 15, a hot-melt adhesive such as a rubber-based, olefin-based, or ethylene vinyl acetate (EVA)-based adhesive is preferably used.
In this embodiment, the adhesive portion 15 is provided on the back sheet 13 of the main body M and the wing portion W. As shown in FIG. A configuration of the adhesive portion 15 will be described later.

[Structure of Absorber]
As shown in FIG. 3, the absorbent body 10 has a front end portion 10a and a rear end portion 10b, and extends in the longitudinal direction X from the front end portion 10a toward the rear end portion 10b. The front end portion 10a is located within the front region M1, and the rear end portion 10b is located within the rear region M3.
As shown in FIGS. 4 and 5, absorbent body 10 is positioned between topsheet 12 and backsheet 13 . The absorbent body 10 is adhered to the surface sheet 12 on its skin side with an adhesive (not shown) such as a hot-melt adhesive.
The absorbent body 10 has an absorbent core 2 , a core wrap sheet 3 , a leak-proof groove 4 , a recessed portion 5 and a high-rigidity portion 6 .

(Configuration of absorbent core)
The absorbent core 2 is a longitudinal member that extends in the longitudinal direction and is configured to absorb and hold excrement.
The absorbent core 2 has a skin-facing surface 20a located on the wearer's skin side and a non-skin-facing surface 20b located on the wearer's clothing side. The absorbent core 2 also has a front edge 2a and a rear edge 2b in the longitudinal direction X. As shown in FIG. The front and rear edges 2a, 2b of the absorbent core 2 are curved so as to bulge outward in the longitudinal direction X. As shown in FIG.

The absorbent core 2 is a fiber aggregate formed by stacking fiber materials such as pulp, and can be manufactured using a fiber stacking device. Hydrophilic fibers are mainly used as the fiber material that constitutes the absorbent core 2 . Examples of hydrophilic fibers include those obtained by hydrophilizing inherently hydrophobic fibers, typified by chemical fibers, and inherently hydrophilic fibers, typified by wood pulp. The seeds can be used singly or in combination of two or more.
Moreover, the absorbent core 2 may further contain a water absorbent polymer in addition to the fiber material. Thereby, the liquid holding power of the absorbent core 2 can be enhanced. The water-absorbent polymer may generally be spherical, blocky, bale-shaped or amorphous. As the water-absorbent polymer, those that can be used in this type of absorbent article can be used without particular limitation, and for example, a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid can be used.

In this embodiment, the absorbent core 2 has a high basis weight portion 21 and a low basis weight portion 22 . The high basis weight portion 21 is a region in which the basis weight of the fiber material, water-absorbing polymer, etc. that is the content of the absorbent core 2 is higher than that of the low basis weight portion 22 .
The high basis weight portion 21 is formed as a longitudinal region extending in the longitudinal direction X provided in the lateral direction Y central portion 31 of the absorbent body 10 in the intermediate region M2. The front and rear edge portions of the high basis weight portion 21 are configured in a convex curved shape in the vertical direction X, for example. The low basis weight portion 22 is a region other than the high basis weight portion 21 in the absorbent core 2 .
In the present embodiment, the high basis weight portion 21 is provided to protrude toward the topsheet 12 side more than the low basis weight portion 22 . Note that the high basis weight portion 21 may protrude toward the backsheet 13 side.
By providing the high basis weight portion 21 in the lateral Y center portion 31 of the intermediate portion of the absorbent core 2, the fit to the excretory portion of the intermediate portion and the absorption of bodily fluids can be improved.

(Configuration of core wrap sheet)
A core wrap sheet 3 covers the absorbent core 2 . The core wrap sheet 3 may be positioned so as to cover at least the skin facing surface 20a of the absorbent core 2 . As shown in FIG. 4, in this embodiment, one core wrap sheet 3 covers the entire absorbent core 2, and the core wrap sheet 3 covers both the skin-facing surface 20a and the non-skin-facing surface 20b. .
The core wrap sheet 3 also has a front edge 3a and a rear edge 3b in the longitudinal direction X. As shown in FIG. As shown in FIG. 3, in this embodiment, the core wrap sheet 3 is configured to have the same shape as the absorbent core 2 in plan view. Therefore, the front and rear edges 3a, 3b of the core wrap sheet 3 overlap the front and rear edges 2a, 2b of the absorbent core 2 in plan view.
The front and rear edges 3a, 3b of the core wrap sheet may protrude outward in the longitudinal direction X beyond the front and rear edges 2a, 2b of the absorbent core 2. As shown in FIG.

The absorbent body 10 also has a multilayer region 25 of the core wrap sheet 3 . The multilayer region 25 is a region where the ends of the core wrap sheet 3 covering the absorbent core 2 are overlapped on the side of the absorbent body 10 facing the back sheet 13 (non-skin facing surface 20b side of the absorbent core 2). be.
The core wrap sheet 3 is, for example, a rectangular sheet, and is arranged so that when the absorbent core 2 is covered, a pair of opposing ends overlap each other and are positioned on the non-skin facing surface 20b side. . Therefore, as shown in FIG. 4, a multi-layer region 25 in which two core wrap sheets 3 are overlapped is formed on the side of the non-skin-facing surface 20b of the absorbent core 2 . The multilayer region 25 extends in the longitudinal direction X and is located in the central portion 31 in the transverse direction Y of the absorbent body 10 . Also, the multilayer region 25 is included in a region that will become the high-rigidity portion 6, which will be described later.
Here, an example in which the multilayer region 25 is located on the skin-facing surface 20a side is given, but it may be located on the non-skin-facing surface 20b side. Also, in FIG. 3, illustration of the multilayer region 25 is omitted.

The core wrap sheet 3 is typically a nonwoven fabric mainly composed of hydrophilic fibers, a sheet-like material such as paper. Hydrophilic fibers contained in the core wrap sheet 3 include natural fibers such as wood pulp such as softwood pulp and hardwood pulp, non-wood pulp such as cotton pulp and hemp pulp; modified pulp such as cationized pulp and mercerized pulp; Regenerated fibers such as cupra and rayon; semi-synthetic fibers such as acetate; hydrophilic synthetic fibers such as polyvinyl alcohol fiber and polyacrylonitrile fiber; synthetic fibers such as polyethylene terephthalate fiber, polyethylene fiber, polypropylene fiber, polyester fiber, etc. The fiber etc. which were applied are mentioned, These 1 type can be used individually or in mixture of 2 or more types. Typical hydrophilic fibers in the core wrap sheet 3 are natural fibers, regenerated cellulose fibers, or semi-synthetic fibers. The core wrap sheet 3 may further contain synthetic fibers (hydrophobic fibers) such as thermoplastic fibers in addition to hydrophilic fibers. Thermoplastic fibers include, for example, single fibers formed using a single synthetic resin such as polyethylene, polypropylene, polyester, and polyurethane, or synthetic resins such as composites of two or more of these. Composite fibers, for example, core-sheath type or side-by-side type composite fibers formed using two or more kinds of synthetic resins can also be used.

(Structure of leak-proof groove)
The absorber 10 and the topsheet 12 are provided with a leak-proof groove 4 formed by pressing in the thickness direction Z from the topsheet 12 side. The leak-proof groove 4 has a configuration in which the top sheet 12 and the absorbent core 2 are integrally recessed toward the back sheet 13 side.
As shown in FIGS. 1 and 3, the leak-proof groove 4 is a compressed groove formed in the peripheral edge of the main body M, exists from the front region M1 to the rear region M3, and extends from the lateral Y central portion of the absorbent body 10. It is arranged so as to surround 31. Further, as shown in FIG. 2, the leak-proof groove 4 at least partially overlaps with the main body adhesive portion 15M in a plan view.

As shown in FIG. 1, the leak-proof groove 4 is positioned along the periphery of the absorbent body 10 so as to surround the high basis weight portion 21 described above. The leak-preventing grooves 4 are composed of a pair of leak-preventing vertical grooves 4a, 4a extending in the longitudinal direction X through the front region M1, the middle region M2, and the rear region M3, and a pair of leak-preventing lateral grooves 4b extending in the lateral direction Y. 4b and. The longitudinal leak-preventing groove 4a and the lateral leak-preventing groove 4b are connected to form one substantially oval shape.

The leak-proof groove 4 can be formed according to a conventional method by pressing with or without heat, or by embossing such as ultrasonic embossing. In the leak-proof groove 4, the surface sheet 12 and the absorbent body 10 are integrated by heat-sealing or the like.
That is, the leak-proof groove 4 is compacted compared to the surrounding area. As a result, the leakage-preventing groove 4 draws the bodily fluid between the fibers compressed by capillary action and diffuses the fluid in the longitudinal direction X, which is the extending direction, thereby preventing the fluid from leaking in the lateral direction Y. have an effect. By providing the leak-proof groove 4 in this way, it is possible to secure a dry feeling around the wearer's excretory part while securing leak-proof properties.

By providing the pair of leak-preventing longitudinal grooves 4a, 4a, the absorber 10 moves with the pair of leak-preventing longitudinal grooves 4a, 4a as a base point when an external force directed inward in the lateral direction Y is applied from both legs of the wearer when worn. Easier to transform. Thereby, it is easy to secure the area sandwiched between the pair of leak-preventing longitudinal grooves 4a, 4a as an absorbent surface for absorbing body fluid.

(Structure of recessed portion)
The recessed portion 5 is a region recessed toward the topsheet 12 together with the backsheet 13 .
In this embodiment, the recessed portion 5 is provided so as to include part of the edge of the absorbent body 10 .
At least the non-skin-facing surface 20b facing the backsheet 13 of the recessed portion 5 is recessed toward the topsheet 12 side. Further, the back sheet 13 is arranged so as to follow the recessed shape of the recessed portion 5 . Therefore, the recessed portion 5 is a region in which the backsheet 13 is partially recessed so as to include the edge of the absorbent body 10 .

In the present embodiment, a compressed region formed by compressing the absorbent body 10 in the thickness direction Z is formed as the recessed portion 5 . The compressed region is formed by pressing the absorbent core 2 and the core wrap sheet 3 together, and is a thinned region whose thickness is reduced by compression. Below, the compression area|region 5 is called using the code|symbol similar to the hollow part 5. As shown in FIG.
As shown in FIG. 3, the absorbent body 10 has, as the compressed regions 5, a front compressed region 5a and a rear compressed region 5b formed at a front end portion 10a and a rear end portion 10b, respectively. 4 and 5 schematically show an example of the cross-sectional configuration of the front compression region 5a, but the cross-sectional configuration of the rear compression region 5b is also the same as the configuration shown in FIGS.
Further, as shown in FIG. 5, when the absorbent core 2 and the core wrap sheet 3 are compressed, the thickness of the absorbent body 10 is increased between the uncompressed area and the area where the thickness is constant due to the compression. In some cases, a boundary portion where the The compressed region 5 also includes the boundary portion where the thickness changes as described above.

The front compressed region 5 a and the rear compressed region 5 b are arranged in the horizontal direction Y central portion 31 of the absorbent body 10 and arranged inside the horizontal direction Y side edges of the absorbent body 10 in the horizontal direction Y. Moreover, the front compression area 5a and the rear compression area 5b are present only in the front area M1 and the rear area M3, respectively.
Both the front compressed region 5a and the rear compressed region 5b are formed by compressing the entire absorbent body 10 in a state in which the absorbent core 2 is covered with the core wrap sheet 3 in the thickness direction Z. Moreover, the absorbent core 2 and the core wrap sheet 3 are integrated in the front compression region 5a and the rear compression region 5b. The front compressed area 5a and the rear compressed area 5b have a higher rigidity than other non-compressed areas, and are less likely to deform.

The front squeezing area 5a extends in the longitudinal direction X and is constituted by a plurality of spaced apart squeezing grooves 26a. The rear compression area 5b extends in the longitudinal direction X and is constituted by a plurality of spaced apart compression grooves 26b. Only the absorbent core 2 and the core wrap sheet 3 of the absorbent body 10 are integrally recessed into the compressed grooves 26a and 26b, and the topsheet 12 is not compressed.

Both the skin facing surface 20a side and the non-skin facing surface 20b side are compressed along the thickness direction Z in the front compression region 5a and the rear compression region 5b. Therefore, the front compressed area 5a and the rear compressed area 5b are recessed areas with respect to the uncompressed area, both when viewed from the top sheet 12 side and when viewed from the back sheet 13 side. form a step leading to
Further, as shown in FIGS. 4 and 5 , in the front compression area 5a and the rear compression area 5b, the top sheet 12 and the back sheet 13 are arranged along the steps formed by compression. Accordingly, steps are formed on the skin side surface of the top sheet 12 and the non-skin side surface of the back sheet 13 corresponding to the front compression area 5a and the rear compression area 5b, respectively.

In addition, in the napkin 1, since the absorbent core 2 and the core wrap sheet 3 have the same shape in plan view, the front compression area 5a and the rear compression area 5b extend to the front and rear edges 3a and 3b of the core wrap sheet 3, respectively. ing. However, when the front and rear edges 3a and 3b of the core wrap sheet 3 extend further in the front and rear edge direction of the napkin 1 than the front and rear edges 2a and 2b of the absorbent core 2, the front and rear compressed areas 5a and 5b are not compressed. The compressed regions 5b only need to extend to the front edge 2a and the rear edge 2b of the absorbent core 2, and need not extend to the front and rear edges 3a and 3b of the core wrap sheet 3.

The compressed grooves 26a and 26b are linear grooves extending in the longitudinal direction X, and extend from the side edges in the longitudinal direction X toward the intermediate region M2.
The "linear" shape of the compressed grooves 26a and 26b is not limited to a linear form in a plan view, and includes a curved form. Each line in the squeeze grooves 26a and 26b may be a continuous line or a dashed line. For example, the compressed grooves 26a and 26b may be formed in rows of a number of discontinuous depressions (eg, point embossments).
Further, in the present embodiment, the compressed grooves are linear grooves extending in the longitudinal direction X, but the shape of the compressed grooves is not limited to this. A linear groove extending in the horizontal direction Y may be used. Further, dot-like compressed grooves may be arranged in a matrix to constitute the compressed region.
Further, in the present embodiment, the front compressed region 5a (rear compressed region 5b) is a compressed portion such as the compressed groove 26a (compressed groove 26b), and the compressed groove 26a (compressed groove 26b) adjacent to the compressed groove 26a (compressed groove 26b). and an unsqueezed portion located therebetween. In this manner, the front compressed region 5a (rear compressed region 5b) may be configured to have an uncompressed portion, or may be configured to include only a compressed portion.

(Structure of high-rigidity portion)
The high-rigidity portion 6 is a region of the absorbent body 10 having higher rigidity than other regions. A portion of the absorbent body 10 where the high-rigidity portion 6 is provided has higher rigidity than a portion where the high-rigidity portion 6 is not provided.
For example, the high-rigidity portion 6 is arranged to partially overlap with the high basis weight portion 21, the leak-proof groove 4, and the compression region 5. , the rigidity of the portion overlapping with the high-rigidity portion 6 is higher than the rigidity of the portion not overlapping with the high-rigidity portion 6. - 特許庁Thus, it can be said that the high-rigidity portion 6 is a region in which the rigidity of the absorbent body 10 is reinforced.
By providing the high-rigidity portion 6, it is possible to prevent the napkin 1 from being easily deformed when the package 30 of the napkin 1 is unsealed.

As shown in FIG. 3 , the high-rigidity portion 6 is provided along the vertical direction X in the central portion 31 of the absorbent body 10 in the horizontal direction Y. As shown in FIG. This makes it difficult for the napkin 1 to bend in the vertical direction X.
Here, the high-rigidity portion 6 is configured as a rectangular region extending along the vertical direction X and arranged symmetrically with respect to the center line 33 in the horizontal direction Y. As shown in FIG. The front and rear edges of the high-rigidity portion 6 extend to the front and rear edges of the absorbent body 10 . Therefore, the front edge of the high-rigidity portion 6 coincides with the front edge 2a (front edge 3a) of the absorbent core 2 (core wrap sheet 3), and the rear edge of the high-rigidity portion 6 coincides with the absorbent core 2 (core wrap sheet 3). It coincides with the trailing edge 2b (trailing edge 3b) of the sheet 3).
By forming the high-rigidity portions 6 along both edges of the absorbent body 10 in the vertical direction X in this manner, the edges of the absorbent body 10 are less likely to bend.

In the napkin 1 , the high-rigidity portion 6 is composed of an adhesive applied to the absorbent body 10 .
For example, when the absorbent body 10 is adhered using a hot-melt adhesive or the like, the absorbent core 2 and the core wrap sheet 3 are impregnated with the melted adhesive. Further, when the adhesive is cured, a cured product including the absorbent core 2 and the core wrap sheet 3 is formed using the adhesive as a base material. A portion where the adhesive is cured has a higher rigidity than other portions where the adhesive is not applied.
In this manner, the high-rigidity portion 6 is constructed by utilizing the property that the portion where the adhesive is applied has a high rigidity. As a result, there is no need to newly introduce a dedicated member or the like, so the high-rigidity portion 6 can be configured easily and at low cost.

In this embodiment, the high-rigidity portion 6 is configured using an adhesive that seals the core wrap sheet 3 . Therefore, the high-rigidity portion 6 includes a region where an adhesive is applied to seal the core wrap sheet 3 covering the absorbent core 2 . Here, the adhesive that seals the core wrap sheet 3 is an adhesive that fastens the core wrap sheet 3 so that the state in which the absorbent core 2 is wrapped by the core wrap sheet 3 does not collapse.

As described above, the absorbent body 10 is formed with the multilayered region 25 formed by overlapping the both ends of the core wrap sheet 3 . The adhesive that seals the core wrap sheet 3 is an adhesive for bonding the ends of the core wrap sheets 3 that overlap each other in the multilayer region 25 .
In the multi-layered region 25, the high-rigidity portion 6 is formed by adhering the double core wrap sheet 3. As shown in FIG. As a result, a hardened product with the adhesive is formed in the portion where the core wrap sheet 3 is thick, so that the rigidity of the high-rigidity portion 6 can be sufficiently increased.

The length in the horizontal direction Y of the high-rigidity portion 6 is set larger than the length in the horizontal direction Y of the multilayer region 25, for example. In this case, in the region of the high-rigidity portion 6 outside the multi-layered region 25, the high-rigidity portion 6 is formed by a cured product obtained by impregnating the single-layer core wrap sheet 3 with an adhesive. Thus, even outside the multilayer region 25, the high-rigidity portion 6 can be formed using an adhesive.
In addition, the shape and size of the high-rigidity portion 6 are not limited. For example, the high-rigidity portion 6 may be a region having the same shape and size as the multilayer region 25 . Alternatively, the high-rigidity portion 6 may be formed by applying an adhesive to a portion of the multilayer region 25 . Thus, the high-rigidity portion 6 includes at least a portion of the multilayer region 25 of the core wrap sheet 3 .
Note that the multilayer region 25 does not necessarily have to be adhered. Even in such a case, the multi-layer region 25 in which the core wrap sheets 3 are arranged in layers has higher rigidity than other regions and can be used as the high-rigidity portion 6 .

Also, the absorbent core 2 and the core wrap sheet 3 may be adhered with an adhesive. In this case, the high-rigidity portion 6 is made of an adhesive that bonds the absorbent core 2 and the core wrap sheet 3 together. For example, an adhesive is placed between the non-skin facing surface 20b of the absorbent core 2 and the core wrap sheet 3, and the absorbent core 2 and the core wrap sheet 3 are integrally adhered on the back sheet 13 side.
The amount of adhesive to be applied is set such that the absorbent core 2 and the core wrap sheet 3 are not separated from each other. This prevents the core wrap sheet 3 from floating from the absorbent core 2. - 特許庁

Furthermore, the absorbent core 2 may be adhered to the backsheet 13 with an adhesive via the core wrap sheet 3 . In this case, it can be said that the high-rigidity portion 6 is a region where the absorbent core 2, the core wrap sheet 3, and the backsheet 13 are integrally adhered to increase the rigidity.
For example, the absorbent core 2 and the core wrap sheet 3 are adhered with an adhesive such as a hot-melt adhesive. After that, an adhesive is applied between the core wrap sheet 3 and the back sheet 13 to bond the absorbent core 2 and the back sheet 13 with the core wrap sheet 3 interposed therebetween. For example, the absorbent core 2, the core wrap sheet 3, and the back sheet 13 may be adhered at once without dividing the adhesion step into two steps.
The amount of adhesive to be applied is set such that the absorbent core 2 and the backsheet 13 are not separated from each other. Thereby, the absorbent core 2 does not float from the backsheet 13 .

(Structure of adhesive portion)
As shown in FIG. 2, the adhesive portion 15 has a main body adhesive portion 15M and a wing adhesive portion 15W. The main body adhesive part 15M is a non-slip material for fixing the main body M of the napkin 1 to clothing, and is provided on the outer surface of the back sheet 13 that constitutes the main body M. The wing adhesive portion 15W is a non-slip material that fixes the pair of wing portions W to clothing, and is provided on the outer surface of the backsheet 13 that constitutes the pair of wing portions W. As shown in FIG.

In the napkin 1, the two main body adhesive portions 15M, 15M are provided on the back sheet 13 of the main body M. As shown in FIG. The two main body adhesive portions 15M, 15M each extend in the vertical direction X and are arranged in the horizontal direction Y apart from each other. None of the two main body adhesive portions 15M, 15M are positioned on the center line 33 of the absorbent body 10, and are opposed to each other in the horizontal direction Y with the center line 33 interposed therebetween.
When the napkin 1 is worn, the main body M is fixed to the inner surface of the wearer's clothing by the two main body adhesive portions 15M, 15M. In addition, in the state of the package 10, the two main body adhesive portions 15M, 15M are releasably covered with a release sheet 17, which will be described later.

The edge 27 of each main body adhesive portion 15M is arranged so as to partially overlap the front compression region 5a and the rear compression region 5b. Hereinafter, the front and rear edges 27 of the main body adhesive portion 15M in the longitudinal direction X are referred to as a front edge 27a and a rear edge 27b. For example, the front edge 27a of each main body adhesive portion 15M is positioned inside the front edge of the absorbent body 10 and overlapping the front compression region 5a. Further, the rear edge 27b of each main body adhesive portion 15M is set at a position inside the rear edge of the absorber 10 and overlapping the rear compression region 5b. Therefore, the main body adhesive portion 15M overlaps the front compression region 5a and the rear compression region 5b in plan view.
In addition, the distance in the horizontal direction Y between the main body adhesive portions 15M is set smaller than the length in the horizontal direction Y of the high-rigidity portion 6 . Therefore, the area on the center line 33 side of each main body adhesive portion 15M overlaps the high-rigidity portion 6 in plan view.

Further, in the napkin 1, the two wing adhesive portions 15W, 15W are provided on the back sheet 13 of the pair of wing portions W, respectively. The wing adhesive portions 15W and 15W are configured to fit in the wing portion W without protruding into the main body M.
When the napkin 1 is worn, the wing portions W located in the intermediate region M2 are folded so as to come into contact with the outer surface of the clothing, which is the non-skin side, and are fixed to the outer surface of the clothing by the wing adhesive portions 15W.

[Configuration of package]
As shown in FIGS. 1, 2, 4 and 5, the package 30 includes the napkin 1 described above, a release sheet 16, a packaging sheet 17, and a joint 18. As shown in FIG. The package 30 folds the napkin 1 in the vertical direction X along with the release sheet 16 and the packaging sheet 17 along two folding lines L1 and L2 (see FIG. 1) extending in the horizontal direction Y, and folds the napkin 1 in the vertical direction X, as shown in FIGS. individually wrapped. In the packaging body 30 , the release sheet 16 is fixed to the packaging sheet 17 by the joining portion 18 . Thus, the package 30 is obtained by packaging the napkin 1 with the package sheet 17 to which the release sheet 16 is fixed.
Note that FIG. 1 shows the package 30 in which the napkin 1 is stretched on the XY plane before being folded and after being opened. 2 also shows the non-skin side of the back sheet 13 seen through the packaging sheet 17 and the release sheet 16. As shown in FIG. Here, the packaging sheet 17 is represented as an area surrounded by rough dashed lines, and the release sheet 16 is represented as an area surrounded by a dashed line.

The release sheet 16 covers the body adhesive portion 15M of the napkin 1 and is configured to be peelable from the body adhesive portion 15M.
The release sheet 16 is configured as, for example, a rectangular sheet material having a longitudinal dimension in the vertical direction X. As shown in FIG. As shown in FIG. 2, the lengths of the release sheet 16 in the vertical direction X and the horizontal direction Y are set so as to cover the entire surface of the two main body adhesive portions 15M, 15M. That is, each main body adhesive portion 15M is completely covered with one release sheet 16. As shown in FIG.
As the release sheet 16, a sheet material that can be easily separated from the adhesive portion 15 of the napkin 1 can be used. Examples of such a sheet material include glassine paper, polyethylene film, release-treated high-quality paper, and the like.

The packaging sheet 17 is a sheet material that forms the outer surface of the package 30 , is fixed to the release sheet 16 , and wraps the napkin 1 . The packaging sheet 17 is arranged on the opposite side of the release sheet 16 to the back sheet 13 . In the example shown in FIGS. 1 and 2, a rectangular packaging sheet 17 that is larger than the main body M of the napkin 1 and elongated in the vertical direction X in plan view in the thickness direction Z is used.
As the packaging sheet 17, various kinds of materials conventionally used as packaging materials for absorbent articles can be used without particular limitation.

The joining portion 18 joins the release sheet 16 and the packaging sheet 17 . An adhesive is typically used as the joint 18, but an adhesive seal or the like may be used, for example.
In this embodiment, a front joint portion 18a is provided on the front edge (front compression region 5a) side of the release sheet 16, and a rear joint portion 18b is provided on the rear edge (rear compression region 5b) side of the release sheet 16. The front joint portion 18a (rear joint portion 18b) is a rectangular region, which is symmetrical with respect to the center line 33 and overlaps the front compression region 5a (rear compression region 5b) on the intermediate region M2 side. placed in
The lateral Y length of the front joint portion 18a (rear joint portion 18b) is greater than the lateral length of the high-rigidity portion 6 and smaller than the lateral length of the front compression region 5a (rear compression region 5b). set.

By fixing the release sheet 16 and the packaging sheet 17 using the joining portion 18, the packaging sheet 17 and the release sheet 16 can be pulled off from the package 30 together when the package 30 is opened. Become. As a result, the backsheet 13 including the adhesive portion 15 of the napkin 1 is exposed, and the user of the napkin 1 can fix the backsheet 13 to clothing via the adhesive portion 15 .
Furthermore, the peeled-off packaging sheet 17 and release sheet 16 are also used, for example, to wrap and dispose of the used napkin 1 .

(Folding structure of package)
As shown in FIG. 1, the laminate of the napkin 1, the release sheet 16, and the packaging sheet 17 includes a first folding line L1 arranged on the front side of the napkin 1 and a first folding line L1 arranged on the rear side of the napkin 1. 2 folding lines L2 are arranged. More specifically, the first folding line L1 is arranged in front of the wing portion W (on the abdomen of the wearer). The second folding line L2 is arranged behind the wing portion W (on the wearer's back side). The first folding line L<b>1 and the second folding line L<b>2 are imaginary lines that serve as folding axes when the napkin 1 is folded as the package 30 .

The package 30 is divided into three regions, the front region M1, the middle region M2, and the rear region M3, by the first folding line L1 and the second folding line L2.
The intermediate region M2 is the region between the first folding line L1 and the second folding line L2.
The front region M1 is a region on the front side of the first folding line L1.
The rear region M3 is a region behind the second folding line L2.

As shown in FIGS. 6 and 7, the napkin 1 is folded such that the topsheet 12 in the front area M1 overlaps the packaging sheet 17 in the rear area M3. Details of the folding structure of the package 30 will be described below.
First, from the state shown in FIG. 1, the rear region M3 is folded over the intermediate region M2 with the second folding line L2 as the folding axis. Specifically, the topsheet 12 of the rear area M3 is superimposed on the topsheet 12 of the intermediate area M2. Note that the wing portions W may be folded inward in the horizontal direction Y in advance. At this time, the wing adhesive portion 15W provided on the wing portion W is protected using a release sheet (not shown).
Next, the front region M1 is folded with the first folding line L1 as the folding axis so as to be further folded into the intermediate region M2 and the rear region M3. Specifically, the surface sheet 12 in the front area M1 is superimposed on the outer surface of the packaging sheet 17 in the rear area M3. As a result, the napkin 1 is folded in three in the longitudinal direction X to form the package 30 shown in FIGS.

Furthermore, the package 30 may have a tab tape T and a side sealing portion F as a configuration for maintaining the folded structure.
As shown in FIGS. 1, 6 and 7, the tab tape T is fixed to the edge of the front region M1 of the package 30 to seal the edge and the packaging sheet 17 of the rear region M3.
As shown in FIG. 6, the side sealing portion F is formed on the side edge of the packaging sheet 17 extending outward in the lateral direction Y from the napkin 1, and is joined by a known joining method such as heat embossing. be done.

(Positional relationship between main body adhesive part, compression area, joint part, and high rigidity part)
Below, mainly the positional relationship of the main body adhesive portion 15M, the compression region 5 (front compression region 5a), the joint portion 18 (front joint portion 18a), and the high rigidity portion 6 on the front side of the napkin 1 will be described. .
In addition, the following description is an explanation of the positional relationship of the main body adhesive portion 15M, the compression region 5 (rear compression region 5b), the joint portion 18 (rear joint portion 18b), and the high rigidity portion 6 on the rear side of the napkin 1. , can be read appropriately.

First, the arrangement of the front compression region 5a and the main body adhesive portion 15M will be described.
As shown in FIG. 2, on the front side of the napkin 1, the front end portion 10a of the absorbent body 10 is provided with a front compression region 5a. This front compression region 5a overlaps with part of the front edges 27a of the two main body adhesive portions 15M, 15M. In this way, the front compression region 5a partially overlaps the edge 27 of the main body adhesive portion 15M when viewed from above in the thickness direction Z of the napkin 1 .

As shown in FIGS. 4 and 5, in the front compressed region 5a, the backsheet 13 is arranged along the compressed shape, and the backsheet 13 is depressed toward the topsheet 12 side. Therefore, of the two main body adhesive portions 15M, 15M provided on the non-skin side surface of the back sheet 13, in the region overlapping the front compression region 5a in a plan view, the two main body adhesive portions 15M, 15M are surrounded. will be depressed with respect to the region of
Moreover, in the package 30, the release sheet 16 is provided so as to entirely cover the two main body adhesive portions 15M, 15M. In regions other than the front compression region 5a (and the rear compression region 5b), the release sheet 16 is in contact with the main body adhesive portion 15M. On the other hand, in the region where the main body adhesive portion 15M and the front compression region 5a (and the rear compression region 5b) overlap, the main body adhesive portion 15M is recessed, so that the release sheet 16 is separated from the main body adhesive portion 15M. Floating without contact.

In general, the non-skin side of the sanitary napkin is provided with an adhesive for attaching the sanitary napkin to clothing. As a form of packaging the sanitary napkin, there is a form in which the adhesive is covered with a release sheet for protecting the adhesive, and the release sheet is bonded to the packaging sheet. In this form, when using the sanitary napkin, the release sheet can be peeled off from the sanitary napkin together with the packaging sheet by pinching the front end of the packaging sheet and the front end of the sanitary napkin and pulling them in opposite directions.
At that time, for example, if the adhesive force between the adhesive and the release sheet is high, the back sheet may stretch, making it difficult to open the package.

In this embodiment, by configuring the napkin 1 so as to have the positional relationship as described above, the front pressing region 5a has a space where the release sheet 16 and the main body adhesive portion 15M do not contact contact space 35) is formed. The edge 27 of the main body adhesive portion 15M overlaps the non-contact space 35 in plan view.
The edge 27 of the main body adhesive portion 15M is the starting position for peeling off the release sheet 16 from the main body adhesive portion 15M, for example. In the configuration in which the front pressing region 5a is partially overlapped with the edge 27 of the main body adhesive portion 15M to form the non-contact space 35, the release sheet 16 and the main body adhesive portion 15M are placed at the position where the release sheet 16 starts to be peeled off. It can be said that it is a configuration in which a portion that is not in contact with is provided.
As a result, the release sheet 16 can be easily peeled off compared to the case where the release sheet 16 and the body adhesive portion 15M start to be peeled from the portion where the release sheet 16 and the main body adhesive portion 15M are in close contact, and the package 30 excellent in unsealability is realized. becomes possible. Further, even if the adhesive force between the main body adhesive portion 15M and the release sheet 16 is high, the release sheet 16 can be easily peeled off without unnecessarily deforming the back sheet 13.

A non-contact space 35 is formed at the front end portion 10 a of the absorbent body 10 . Therefore, for example, when the wearer slips his or her finger between the release sheet 16 and the napkin 1 (back sheet 13), the wearer's finger easily reaches the front end portion 10a of the absorbent body 10, and the wearer can makes it easier to grip the absorber 10. This makes it possible to peel off the release sheet 16 while holding the portion of the napkin 1 provided with the absorbent body 10 . As a result, it becomes easier to grip the napkin 1 than when gripping the peripheral portion of the absorbent body 10 composed only of the top sheet 12 and the back sheet 13, for example.
Also, by gripping the front end portion 10a of the absorber 10, the peeling start position of the release sheet 16 can be held down with a finger. This makes it possible to start peeling off the release sheet 16 while holding down the main body adhesive portion 15M at the peel start position, so that the release sheet 16 can be easily peeled off.

Moreover, the length of the lateral direction Y of the front compression area|region 5a is smaller than the length of the lateral direction Y of the absorber 10. As shown in FIG. Therefore, on both sides of the front compression region 5a in the lateral direction Y, there are regions where the absorbent body 10 is not compressed. Since the release sheet 16 is supported by the area where the absorbent body 10 is not compressed, a non-contact space 35 having a bag structure is formed in the front compressed area 5a. As a result, contact between the release sheet 16 and the main body adhesive portion 15M within the front compression region 5a is suppressed, and the non-contact space 35 can be maintained. Further, by forming the non-contact space 35 into a bag structure, it becomes possible to easily guide the wearer's fingers.

Next, the arrangement of the front joint portion 18a will be described.
As shown in FIG. 2, the front joint portion 18a is positioned so as to at least partially overlap with a region where the main body adhesive portion 15M and the front compression region 5a overlap in plan view.
Below, the area|region where the adhesion part 15M for main bodies and the front compression area|region 5a overlap in planar view is described as the 1st overlapping area|region U1. In the first overlapping region U1, the release sheet 16 is in a floating state without contacting the main body adhesive portion 15M.
The shape and position of the front joint portion 18a provided between the release sheet 16 and the packaging sheet 17 are set so as to at least partially overlap the first overlapping region U1.

In FIG. 2 , two rectangular regions where the two main body adhesive portions 15M and 15M overlap on the lower left side and the lower right side of the front compression region 5a in the figure are the first overlapping regions U1.
The front joint portion 18 a is a rectangular area arranged symmetrically with respect to the center line 33 . The length in the vertical direction X of the front joint portion 18a is set larger than the length in the vertical direction X of each first overlapping region U1. In addition, the length of the front joint portion 18a in the lateral direction Y is set to be smaller than the length of the front compression region 5a in the lateral direction Y and larger than the interval in the lateral direction Y between the two main body adhesive portions 15M, 15M. .
The front joint portion 18a configured in this manner is arranged so that the central portion thereof in the longitudinal direction X overlaps the first overlapping regions U1 on both sides.

For example, when peeling off the packaging sheet 17 from the front side of the packaging body 30, the peeling sheet 16 is pulled by the packaging sheet 17 starting from the front joint portion 18a. That is, the front joint portion 18 a is a region where the wearer's force is transmitted from the packaging sheet 17 to the release sheet 16 , and is a region where a pulling force acts on the release sheet 16 .
In this way, the front joint portion 18a, where the force to pull the release sheet 16 acts, is arranged so as to overlap the first overlapping region U1 where the release sheet 16 is floating from the main body adhesive portion 15M.

For example, consider peeling off the packaging sheet 17 in the state shown in FIG. When the packaging sheet 17 is peeled off, the release sheet 16 begins to be peeled up from a position floating from the body adhesive portion 15M, and then the portion where the release sheet 16 and the body adhesive portion 15M are in contact is peeled up. As a result, the release sheet 16 can be reliably peeled off with a sufficiently small force, as compared with, for example, a configuration in which the release sheet 16 is pulled from a portion where the release sheet 16 is not floating from the main body adhesive portion 15M.

Further, the front edge of the front joint portion 18a is arranged on the front side of the front edge 27a of the main body adhesive portion 15M. As a result, when peeling the packaging sheet 17 from the front side, the release sheet 16 can be pulled up before the position where the main body adhesive portion 15M and the release sheet 16 are in contact. This makes it possible to start peeling off the release sheet 16 smoothly.

Next, the arrangement of the high-rigidity portion 6 will be described.
As shown in FIG. 2 , the high-rigidity portion 6 is positioned so as to at least partially overlap with a region where the main body adhesive portion 15M, the front compression region 5a, and the front joint portion 18a overlap in plan view.
Below, the area|region where the adhesion part 15M for main bodies, the front compression area|region 5a, and the front joint part 18a overlap in planar view is described as the 2nd overlapping area|region U2. The second overlap region U2 is a region of the first overlap region U1 that overlaps the front joint portion 18a.
The shape and position of the high-rigidity portion 6 formed on the backsheet 13 side of the absorbent body 10 are set so as to at least partially overlap the second overlapping region U2.

In FIG. 2, of the two first overlapping regions U1 formed on both sides of the center line 33, the front joint portion 18a is cut at the side edge along the longitudinal direction X and formed on the center line 33 side. Each of the two rectangular areas becomes the second overlapping area U2.
The high-rigidity portion 6 is a rectangular region arranged symmetrically with respect to the center line 33 and extending in the longitudinal direction X. As shown in FIG. As described above, the length of the high-rigidity portion 6 in the vertical direction X is the same as the length of the absorbent body 10 in the vertical direction X, and the high-rigidity portion 6 extends over both edges in the vertical direction X of the absorbent body 10. be provided. Further, the length of the high-rigidity portion 6 in the horizontal direction Y is set smaller than the length of the front joint portion 18a in the horizontal direction Y and larger than the interval in the horizontal direction Y between the two main body adhesive portions 15M, 15M. .
The high-rigidity portion 6 configured in this way overlaps the two second overlapping regions U2 facing each other across the center line 33 on the center line 33 side.

When the package 30 is unsealed, if the napkin 1 is deformed together with the release sheet 16 when the release sheet 16 is pulled, it may be difficult to peel off the release sheet 16 from the napkin 1 (main body adhesive portion 15M). be done.
Therefore, in the present embodiment, the high-rigidity portion 6 is arranged so as to overlap the second overlap region U2, which is the starting point for peeling the release sheet 16. As shown in FIG. As described above, the high-rigidity portion 6 is a region that has higher rigidity than other regions of the absorbent body 10 and is less likely to deform. As a result, the rigidity of the peeling starting point of the release sheet 16 is increased, and unwanted deformation of the napkin 1 is suppressed. As a result, it becomes possible to start peeling off the release sheet 16 easily, and it becomes possible to exhibit high unsealability.

Further, in this embodiment, the high-rigidity portion 6 is provided up to the front edge of the absorbent body 10 (the front compression region 5a). As a result, the front edge of the absorbent body 10 is less likely to bend, and the shape of the opening serving as the entrance of the non-contact space 35 can be easily maintained. As a result, it becomes easier to put a finger into the non-contact space 35 and to grasp the front compression region 5a.
In addition, since the front edge of the absorbent body 10 has high rigidity, the entrance of the non-contact space 35 can be easily identified, and the finger of the wearer can be guided to enter the non-contact space 35. - 特許庁

Further, in the present embodiment, the length of the front compression region 5a in the horizontal direction Y is set larger than the length of the high-rigidity portion 6 in the horizontal direction Y. As shown in FIG. Therefore, the high-rigidity portions 6 do not overlap the side end portions located on both sides in the horizontal direction Y of the front compression region 5a. Therefore, the rigidity of the central portion and the rigidity of the side ends of the front compression region 5a are different. Since the side ends are particularly softer than the central portion, it is easy to form a bag structure. This makes it easier to insert a finger from the front edge of the front compression region 5a. As a result, it becomes possible to improve the operability when opening the package 30 .

The high-rigidity portion 6 is constructed by integrally adhering the absorbent core 2 and the core wrap sheet 3 with an adhesive such as a hot-melt adhesive. This prevents the core wrap sheet 3 from floating from the absorbent core 2, making it easier to peel off the release sheet 16. - 特許庁
Furthermore, the absorbent core 2 is adhered to the back sheet 13 via the core wrap sheet 3 . This prevents the backsheet 13 from floating from the absorbent core 2 and makes it easy to peel off the release sheet 16 sufficiently.
Also, the adhesive that forms the high-rigidity portion 6 is applied to the multilayer region 25 where the core wrap sheet 3 overlaps. That is, by using an adhesive for sealing the core wrap sheet 3 that wraps the absorbent core 2, the highly rigid portion 6 can be easily realized.

Further, the main body adhesive portions 15M and 15M are not adhered to the release sheet 16 in the front compression region 5a and the rear compression region 5b, which are the recessed portions 5. As shown in FIG. Therefore, in the regions of the main body adhesive portions 15M, 15M that overlap with the front compression region 5a and the rear compression region 5b, a decrease in adhesive strength can be suppressed compared to the portion where the release sheet 16 is adhered. For this reason, the adhesive force of the main body adhesive portions 15M, 15M located in this area maintains a sufficient strength, and the front and rear portions of the napkin 1 adhere well to the clothes, and the napkin 1 peels off while being worn. can be sufficiently suppressed.

(Position of overlapping area of main body adhesive part, compression area, joint part, and high-rigidity part)
As shown in FIG. 2, the main body adhesive portion 15M, the front compression region 5a, the front joint portion 18a, and the high-rigidity portion 6 overlap at the central portion 31 in the lateral direction Y of the absorbent body 10 in plan view.
Hereinafter, a region where the main body adhesive portion 15M, the front compression region 5a, the front joint portion 18a, and the high-rigidity portion 6 overlap in plan view is referred to as a third overlap region U3. The third overlapping area U3 is an area overlapping with the high-rigidity portion 6 in the above-described second overlapping area U2. In the package 30, a third overlapping region U3 is formed in the central portion 31 in the lateral direction Y of the absorbent body 10. As shown in FIG.

In FIG. 2, of the two second overlapping regions U2 formed on both sides of the center line 33, the side edge along the longitudinal direction X of the high-rigidity portion 6 is cut and formed on the center line 33 side. Each of the two rectangular areas becomes the third overlapping area U3. These third overlapping regions U3 are located in the central portion 31 in the transverse direction Y of the absorbent body 10 .

The third overlapping region U3 is a region where the release sheet 16 is lifted from the main body adhesive portion 15M, serves as a starting point for pulling the release sheet 16, and increases the rigidity of the napkin 1 (absorbent body 10). Therefore, when the package 30 is unsealed, the napkin 1 can be grasped by the third overlapping area U3 and its neighboring area to exhibit excellent unsealability.
For example, when the wearer takes out the napkin 1 from the wrapper 30, the wearer generally holds near the center of the napkin 1 in many cases. Therefore, by providing the third overlapping region U3 in the central portion 31 of the absorbent body 10, the wearer naturally grasps the third overlapping region U3 and its neighboring regions. As a result, the wearer can easily open the package 30 .

Further, as shown in FIG. 2, the main body adhesive portion 15M, the front compression region 5a, the front joint portion 18a, and the high-rigidity portion 6 overlap at the front end portion 10a in the longitudinal direction X of the absorbent body 10 in plan view. That is, in the package 30, the third overlapping region U3 is formed at the front end portion 10a in the longitudinal direction X of the absorbent body 10. As shown in FIG.

As described with reference to FIGS. 6 and 7, in this embodiment, the package 30 is folded along the first folding line L1 and the second folding line L2 so that the front region M1 is outside the rear region M3. Folded. Therefore, after peeling off the tab tape T, the wearer first holds the front region M1 of the wrapper 30 . That is, the wearer often holds the wrapping sheet 17 and the front end of the napkin 1 in the longitudinal direction X. As shown in FIG. Therefore, by providing the third overlapping region U3 at the front end portion 10a of the absorbent body 10, the wearer who has peeled off the tab tape T naturally grasps the third overlapping region U3 and the regions in the vicinity thereof. It becomes possible to easily perform the operation of unsealing the body 30 .

Note that the method of folding the package 30 is not limited to the examples shown in FIGS. For example, the package 30 may be folded such that the rear region M3 is outside the front region M1. In this case, first, the topsheet 12 in the front area M1 is folded along the first folding line L1 so as to merge with the topsheet in the intermediate area M2, and then the topsheet 12 in the rear area M3 is folded along the second folding line L2 to the front area M1. It is folded so as to match with the packaging sheet 17. - 特許庁
In such a case, at the rear of the package 30, the main body adhesive portion 15M, the rear compression region 5b, the rear joint portion 18b, and the high-rigidity portion 6 are the rear end portion 10b in the longitudinal direction X of the absorbent body 10 in plan view. are configured to overlap with each other. As a result, the wearer can naturally have a region where the main body adhesive portion 15M, the rear compression region 5b, the rear joint portion 18b, and the high-rigidity portion 6 overlap and the vicinity thereof, which are naturally formed behind the wrapping body 30. As a result, the package 30 can be easily opened.

<Example of dimensions of each configuration>
Examples of dimensions of each configuration will be described below, but these numerical values are examples and are not limited to these.
In this embodiment, the length of the napkin 1 in the vertical direction X is 250 mm, and the length of the main body M in the horizontal direction Y is 73 mm.
The length a in the lateral direction Y of the front compression region 5a is 35 mm, and the length b in the longitudinal direction X is 12.5 mm. The length c in the lateral direction Y of the rear compression region 5b is 35 mm, and the length d in the longitudinal direction X is 5 mm.
A maximum length D1 of the high-rigidity portion 6 in the transverse direction Y is preferably 10 mm or more, more preferably 20 mm or more, and preferably 60 mm or less, more preferably 50 mm or less.
The maximum length D2 in the lateral direction Y of the high basis weight portion 21 is 35 mm.
Here, the length a of the front compression region 5a in the horizontal direction Y and the length c of the rear compression region 5b in the horizontal direction Y are the same as the length D1. The length a in the lateral direction Y of the front compression region 5a and the length c in the lateral direction Y of the rear compression region 5b are preferably D2 or more.

It should be noted that the fact that the high-rigidity portion 6 has higher rigidity than the surroundings of the high-rigidity portion 6 can be evaluated by rigidity measurement using a handle-o-meter.
Specifically, the napkin was stored in a test room at a temperature of 23 ° C. and a humidity of 50% for 24 hours, and then used as a measurement sample, under the same temperature and humidity conditions, in accordance with the handleometer method (JIS L-1096). Stiffness values can be measured.
The handle o-meter is model HOM-200 manufactured by Daiei Kagaku Seiki Seisakusho. It is placed on the sample stage so as to form a right angle, the blade of the penetrator is lowered at a constant speed of 200 mm/min, and the maximum value indicated by the indicator (load meter) is read. The rigidity of the high-rigidity portion 6 can be measured by such a method.

The maximum length D2 in the horizontal direction Y of the high basis weight portion 21 is preferably 25 mm or more, more preferably 30 mm or more, and preferably 50 mm or less from the viewpoint of ensuring a surface that efficiently absorbs excrement from the excretion portion. , more preferably 45 mm or less.
The maximum length D3 in the lateral direction Y between a pair of leak-proof flutes 4a, 4a is preferably 30 mm or more, more preferably 35 mm or more, and preferably 70 mm or less, more preferably 65 mm or less.

The length in the horizontal direction Y of each of the front compression region 5a and the rear compression region 5b is appropriately set according to the length D2 in the horizontal direction Y of the high basis weight portion 21 .
For example, the length a in the lateral direction Y of the front compression area 5a is preferably 15 mm or more, more preferably 20 mm or more, and preferably 55 mm or less, more preferably 50 mm or less.
The length c of the rear compression area 5b in the lateral direction Y is preferably 15 mm or more, more preferably 20 mm or more, and preferably 55 mm or less, more preferably 50 mm or less.
In addition, the length a (length c) in the horizontal direction Y of the front compression region 5a (rear compression region 5b) is a pair of compressions located most laterally Y outside of the front compression region 5a (rear compression region 5b). The distance between the outer edges of the grooves 26a (pair of compressed grooves 26b).

The length in the vertical direction X of each of the front compression region 5a and the rear compression region 5b is appropriately set according to the length of the napkin in the vertical direction X, the position of the leak prevention groove, and the like.
The length b of the front compression area 5a in the longitudinal direction X is preferably 5 mm or more, more preferably 7 mm or more, and preferably 25 mm or less, more preferably 20 mm or less.
The length d of the rear compression region 5b in the longitudinal direction X is preferably 2 mm or more, more preferably 5 mm or more, and preferably 20 mm or less, more preferably 15 mm or less.
In addition, the length of the vertical direction X of each compression groove 26a (compression groove 26b) may differ in the front compression area|region 5a (back compression area|region 5b). The length b (length d) in the longitudinal direction X of the front compression region 5a (rear compression region 5b) is the length of the longest compression groove 26a (compression groove 26b).

In the package 30, the depth in the thickness direction Z of the compressed grooves 26a and 26b is preferably 0.3 mm from the viewpoint of forming a sufficient step and difference in rigidity at the boundary between the front compressed area 5a and the rear compressed area 5b. Above, more preferably 0.5 mm or more, preferably 3.0 mm or less, more preferably 2.0 mm or less.
The groove width of the compressed grooves 26a and 26b is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.0 mm or less, more preferably 2.0 mm or less.
In the compressed grooves 26a and 26b, the spacing along the lateral direction Y between adjacent grooves is preferably 0.5 mm or more, more preferably 1.0 mm or more, and preferably 3.0 mm or less, more preferably 2.0 mm or less.
In the napkin 1 and the package 30, the number of each compressed groove 26a (compressed groove 26b) in the front compressed area 5a (rear compressed area 5b) is not limited to the illustrated example, preferably 2 or more, more preferably 5 It is 1 or more, and preferably 25 or less, more preferably 20 or less.

<Other configuration examples>
Of course, the present invention is not limited to the above-described embodiments, and can be modified in various ways.

In the above-described embodiment, as the recessed portion 5, the front end portion 10a and the rear end portion 10b of the absorbent body 10 are formed with the front compression region 5a and the rear compression region 5b, respectively. Thus, the structure is not limited to the configuration in which the recessed portions 5 are provided at both ends of the absorbent body 10 in the longitudinal direction X. may be formed.
For example, as shown in FIGS. 6 and 7, when the package 30 is folded so that the front region M1 is on the outside, the front end 10a of the absorbent body 10 forms a front compressed region 5a. In this case, the rear end portion 10b may not have the rear compression region 5b. Further, when the packaging body 30 is folded so that the rear region M3 is on the outside, a rear compression region 5b is formed at the rear end portion 10b of the absorbent body 10 . In this case, the front end portion 10a does not need to be formed with the front compression region 5a.
In either case, after peeling off the tab tape T, the wearer can naturally hold the part where the release sheet 16 is lifted due to the overlapping of the compressed area 5 and the body adhesive part 15M. 16 can be easily peeled off.
In addition, recessed portions 5 (compressed regions 5) may be formed at the side ends of the absorbent body 10 . Even in such a case, by configuring the recessed portion 5 so as to partially overlap the edge 27 of the main body adhesive portion 15M, a portion where the release sheet 16 is lifted is formed, thereby improving the unsealability. can be done.

Also, the recessed portion 5 does not need to be configured using compressed grooves. For example, the thickness of the absorbent body 10 may be reduced by pressing the entire area of the absorbent body 10 where the depressions 5 are to be formed. In this case, pressing is performed so as to recess the absorbent body 10 at least from the back sheet 13 side toward the top sheet 12 side.
Alternatively, the recessed portion 5 may be formed without performing compression processing or the like. For example, the absorber 10 may be configured using an absorber mold or the like in which the shape of the recessed portion 5 is provided in advance.
In this way, even if the compressed grooves are not used, the release sheet 16 can be lifted by recessing the absorber 10 from the back sheet 13 side toward the top sheet 12 side.

In the above-described embodiment, the main body adhesive portion 15M is configured as two striped regions along the longitudinal direction X. As shown in FIG. The configuration of the main body adhesive portion 15M is not limited, and the main body adhesive portion 15M may be configured as two or more striped regions along the vertical direction X, for example. Further, the main body adhesive portion 15M may be configured as a plurality of striped regions along the horizontal direction Y. Alternatively, the main body adhesive portion 15M may be configured by a single region.
In any case, by arranging the edge 27 of the main body adhesive portion 15M to overlap the recessed portion 5, the release sheet 16 can be lifted, and the package 30 can be easily opened.

In the above-described embodiment, the high-rigidity portions 6 are provided on both ends in the longitudinal direction X of the absorbent body 10 . For example, the front edge (rear edge) of the high-rigidity portion 6 may be arranged inside the front edge (rear edge) of the front compression region 5a (rear compression region 5b). Alternatively, the high-rigidity portion 6 may be composed of a plurality of regions.
Also, the high-rigidity portion 6 may be configured using a material other than the adhesive. For example, the high-rigidity portion 6 may be provided using a sheet member or the like having a higher rigidity than other regions of the absorbent body 10 .
Even in such a case, the high-rigidity portion is formed so that the main body adhesive portion 15M, the front compression region 5a (rear compression region 5b), and the front joint portion 18a (rear joint portion 18b) overlap with the overlapping region. 6, the package 30 from which the release sheet 16 can be easily peeled off can be realized.

Further, in the above-described embodiment, the napkin provided with the wing portion W was described as an example, but it may be applied to a napkin that does not have the wing portion W. Similarly, the main body adhesive portion 15M, the front pressing By providing the region 5a (rear compression region 5b), the front joint portion 18a (rear joint portion 18b), and the high-rigidity portion 6, it is possible to improve the unsealability of the package 30. FIG.

1... Napkin (absorbent article)
5... Compressed area (recess)
DESCRIPTION OF SYMBOLS 6... High-rigidity part 10... Absorber 12... Top sheet 13... Back sheet 15... Adhesive part 16... Release sheet 17... Packaging sheet 18... Joint part 27... Edge 30... Package body

Claims (10)

A package in which an absorbent article is packaged with a packaging sheet to which a release sheet is fixed,
The absorbent article has a topsheet, a backsheet, an absorbent body disposed between the topsheet and the backsheet, and an adhesive portion provided on the non-skin side of the backsheet. ,
The adhesive part is releasably covered with the release sheet,
The absorbent body is recessed toward the top sheet side together with the back sheet, and has a recess part that partially overlaps the edge of the adhesive part in plan view in the thickness direction. The package of absorbent articles according to claim 1, wherein the recessed portion is a compressed region formed by compressing the absorbent body in the thickness direction. 2. The packaging body further comprises a joining portion positioned so as to at least partially overlap a region where the adhesive portion and the recessed portion overlap in plan view, and joining the release sheet and the packaging sheet. Or the package of the absorbent article according to 2. The absorbent body is positioned so as to at least partially overlap a region where the adhesive portion, the recessed portion, and the joint portion overlap in plan view, and is a region having higher rigidity than other regions of the absorbent body. 4. The absorbent article package according to claim 3, which has a certain high-rigidity portion. The absorbent article package according to claim 4, wherein the high-rigidity portion is composed of an adhesive applied to the absorbent body. The absorbent body has an absorbent core and a core wrap sheet covering the absorbent core,
The absorbent article package according to claim 5, wherein the high-rigidity portion includes a region provided with an adhesive for sealing the core wrap sheet covering the absorbent core. 7. The package of absorbent articles according to claim 5, wherein the absorbent core is adhered to the backsheet with an adhesive via the core wrap sheet. The high-rigidity portion is provided along the vertical direction in the center portion of the absorbent body in the horizontal direction,
The package for absorbent articles according to any one of claims 4 to 7, wherein the lateral length of the recessed portion is greater than the lateral length of the high-rigidity portion. The absorbent article according to any one of claims 4 to 8, wherein the adhesive portion, the recessed portion, the joint portion, and the high-rigidity portion overlap at a central portion in the horizontal direction of the absorbent body in plan view. packaging. Any one of claims 4 to 9, wherein the adhesive portion, the recessed portion, the joint portion, and the high-rigidity portion overlap at least one of a front end portion and a rear end portion in the longitudinal direction of the absorbent body in the plan view. A package for the absorbent article according to the above item.

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