WO2023157370A1

WO2023157370A1 - Individually packaged absorbent article

Info

Publication number: WO2023157370A1
Application number: PCT/JP2022/037216
Authority: WO
Inventors: 敦子長谷澤
Original assignee: 大王製紙株式会社
Priority date: 2022-02-15
Filing date: 2022-10-05
Publication date: 2023-08-24
Also published as: TW202348212A; JP2023118320A

Abstract

The present invention provides an individually packaged absorbent article which comprises a packaging sheet and an absorbent article that is packaged with the packaging sheet, wherein: the packaging sheet has a first region which includes one end of the packaging sheet in a first direction, and a second region which includes the other end that is on the opposite side from the one end; the first region and the second region are folded such that the first region is superposed on the outer surface of the second region; both edge parts in a second direction that is perpendicular to the first direction are sealed along the first direction; an adhesive, which fastens the first region and the second region, is provided between the first region and the second region; and an end region which includes the one end within the first region is folded back.

Description

Individually packaged absorbent article

The present invention relates to individually packaged absorbent articles.

In general, absorbent articles such as sanitary napkins, panty liners, and incontinence pads are provided in a state of being individually wrapped with wrapping sheets for reasons such as hygienic storage and portability. . Such a packaged absorbent article (also referred to as an individually packaged absorbent article or an individual package of absorbent articles) includes an absorbent article placed inside a packaging sheet, and the packaging sheet together with the absorbent article. A configuration is well known in which, after folding inward, both edges are sealed, and then the ends of the folded region of the packaging sheet are fastened with fastening tapes (for example, Patent Literatures 1 and 2).

The fastening tape prevents unintentional opening of the individually packaged absorbent article before use and prevents dust from entering the individually packaged absorbent article.

JP-A-2002-645 JP-A-2004-49262

In recent years, due to the increasing awareness of the environment, products with reduced plastic materials are being considered. As part of this, efforts are being made to reduce or eliminate fastening tapes that are primarily made of plastic material. However, if the use of the fastening tape is discontinued, the sealing performance of the individually packaged absorbent article is impaired, which may cause inconvenience to the user.

In view of the above, it is an object of one aspect of the present invention to provide an individually packaged absorbent article that at least guarantees sealability while considering the environment.

One aspect of the present invention is an individually packaged absorbent article including a packaging sheet and an absorbent article wrapped by the packaging sheet, wherein the packaging sheet includes one end of the packaging sheet in the first direction. 1 region and a second region including the other end opposite to the one end, wherein the first region and the second region are folded such that the first region overlaps the outer surface of the second region , both edges in a second direction orthogonal to the first direction are sealed along the first direction, and an adhesive is provided between the first region and the second region for fixing both regions and an edge region including the one end of the first region is folded outward.

According to one aspect of the present invention, it is possible to provide an individually packaged absorbent article that ensures at least sealing performance while being environmentally friendly.

Fig. 2 is a plan view of the individually packaged absorbent article according to the first embodiment in an unfolded state; FIG. 2 is a plan view of the individually packaged absorbent article of FIG. 1; FIG. 3 is a cross-sectional view taken along line AA of FIG. 2; FIG. 4 is a perspective view for explaining how to open the individually packaged absorbent article according to the first embodiment; It is a figure which shows the modification of arrangement|positioning of the adhesive in 1st Embodiment. FIG. 4 is a perspective view showing a modification of the individually packaged absorbent article according to the first embodiment; FIG. 10 is a plan view of the individually packaged absorbent article according to the second embodiment in an unfolded state; FIG. 8 is a plan view of the individually packaged absorbent article of FIG. 7; FIG. 9 is a cross-sectional view taken along line B1-B1 of FIG. 8; FIG. 9 is a cross-sectional view taken along line B2-B2 of FIG. 8; It is a top view which shows the modification of the folding|turning in 2nd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each drawing, unless otherwise described, the same reference numerals may be attached to the same or corresponding configurations, and the description thereof may be omitted.

[First embodiment]
FIG. 1 shows a plan view of an individually packaged absorbent article 100 according to the first embodiment in an unfolded state (a state in which the packaging sheet 10 is unfolded), and FIG. 2 shows the individually packaged absorbent article 100 of FIG. A plan view is shown. 3 shows a cross-sectional view taken along the line AA of FIG. As shown in FIGS. 1 to 3, an individually packaged absorbent article 100 according to this embodiment includes a packaging sheet 10 and an absorbent article 1 individually packaged with the packaging sheet 10. As shown in FIGS. The individually packaged absorbent article 100 is one in which one absorbent article 1 is wrapped with one packaging sheet 10, but may be one in which a plurality of absorbent articles are wrapped.

<Absorbent article>
The absorbent article 1 wrapped by the packaging sheet 10 in this embodiment may be a flat and elongated article that is worn so as to face the outlet for bodily fluids (menstrual blood, vaginal discharge, urine, etc.).

Specific examples of the absorbent article 1 may be a sanitary napkin, a panty liner (a sheet for vaginal discharge), a pad for light incontinence, and the like. The absorbent article 1 may have a liquid-permeable topsheet 3, a liquid-impermeable backsheet, and an absorbent body 4 disposed between the topsheet 3 and the backsheet. .

As the back sheet, a sheet material having at least water impermeability, such as an olefin resin sheet such as polyethylene or polypropylene, can be used. A laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or a laminated sheet of a nonwoven fabric in which a waterproof film is interposed to ensure substantially liquid impermeability can be used. Also, a material having moisture permeability may be used.

As the top sheet 3, a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like is preferably used. The material fibers that make up the nonwoven fabric include, for example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, blended fibers thereof, and natural fibers such as cotton. It can be used in combination of two or more.

The absorbent body 4 is not limited as long as it is a material that can absorb and retain bodily fluids, but it preferably contains cotton pulp and a water-absorbing polymer. As the water absorbent polymer, super absorbent polymer (SAP), super absorbent polymer fiber (SAF) and combinations thereof can be used. The pulp includes chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate.

The thickness of the absorbent body 4 may be 0.5 to 25 mm. The absorbent body 4 can also have a structure in which a region corresponding to the body fluid outlet (body fluid outlet corresponding region) and a region behind the body fluid outlet corresponding region facing the groove of the buttocks are swollen. The absorbent body has a size and shape that do not protrude from the top sheet and the back sheet, and the front and rear edges of the absorbent body 4 are coated with an adhesive such as a hot melt or a heat absorbent. They are joined by adhesive means such as seals and ultrasonic seals.

Side sheets

7 , 7 may be provided along the longitudinal direction of the absorbent article 1 on both sides of the absorbent body 4 . As the

side sheets

7, 7, a water repellent nonwoven fabric or a hydrophilic treated nonwoven fabric can be used. The absorbent article 1 may have wings extending laterally, in which case the wings can be formed by joining the side sheet 7 and the back sheet.

In addition, on the non-skin side of the absorbent article 1 (the side facing the underwear when worn), an adhesive or non-adhesive slip is provided to prevent the absorbent article 1 from slipping from the underwear when attached to the underwear. A stop (not shown) may be provided.

The total length of the absorbent article 1 can be 140-430 mm, and the width of the absorbent article 1 (width of the main body excluding the wings if it has wings) can be 50-130 mm.

<Packaging sheet>
The packaging sheet 10 also has an elongated shape in the unfolded state similar to the shape of the absorbent article 1, and may have, for example, a rectangular shape, an oblong shape, or the like. In description of this form, the longitudinal direction D1 of the packaging sheet 10 may be called a 1st direction, and the direction orthogonal to a 1st direction, ie, the lateral direction D2 of the packaging sheet 10, may be called a 2nd direction. However, the plan view shape of the packaging sheet 10 may be a non-elongated shape such as a square or a circle.

The dimensions of the packaging sheet 10 depend on the size and shape of the absorbent article 1 to be packaged. ) can be 100 to 460 mm, and the length in the transverse direction D2 (sometimes simply called width) can be 70 to 250 mm.

The material constituting the packaging sheet 10 is not particularly limited, and may be paper, resin film, non-woven fabric, or the like. Among these, it is preferable to use paper because it has high rigidity and can be reliably folded when folded. In addition, by using paper, the burden on the environment at the time of disposal is reduced, and the natural texture of natural materials can be imparted.

In this specification, the term "paper" refers to a flat plate made by agglutinating plant fibers or other fibers with a glue. In particular, it can refer to a material mainly composed of vegetable fibers (pulp), for example, a material containing 50% or more, preferably 80% or more, vegetable fiber of the contained fibers. The types of pulp contained in the paper may include wood pulp, non-wood pulp, and waste paper pulp, which may be either mechanical pulp or chemical pulp. Additives may be added to the paper. Further, specific examples of paper used for the packaging sheet 10 include various types of paper such as western paper, Japanese paper, processed paper, and synthetic paper. In addition, unprocessed or processed paper conventionally used for other purposes, such as newsprint, printing paper (including high-quality paper), writing paper, drawing paper, wrapping paper, tissue paper, miscellaneous paper, etc. can also be used as The paper may be bleached or unbleached. Unbleached paper imparts a more natural feel. In addition, since the inside becomes difficult to see through, the wrapped absorbent article 1 becomes difficult to see, and even when the used absorbent article is wrapped when discarded, it becomes difficult to see the used absorbent article, which is preferable.

The paper used as the material for the packaging sheet 10 can be thin paper with a low weight per unit area in order to facilitate folding when packaging the absorbent article 1 and to facilitate maintaining the state after packaging. The thin paper may be light imitation paper, Indian paper, rice paper (used as cigarette wrapping paper, etc.), glassine paper, tissue paper, toilet paper, filter paper, and the like. Also, the paper may be processed after paper making. Examples of the above processing include crepe processing, embossing, calendering, water-repellent processing (mold release processing), slit processing, ply processing, and printing processing. Both strength and flexibility can be improved by creping or embossing. When the packaging sheet 10 is subjected to water-repellent treatment (release treatment), for example, a water-repellent agent containing silicone-based resin, paraffin-based resin, fluororesin, or the like is applied to the outer surface of the packaging sheet 10 (the absorbent article 1 is packaged). It may be applied to at least one of the side exposed to the outside in the folded state) and the inner surface opposite to the outer surface.

When paper is used as the material of the packaging sheet 10, its basis weight may be 10 to 100 g/m ² . Also, the thickness of the paper can be preferably 25 to 200 μm, more preferably 50 to 200 μm.

When a resin film is used as the material for the packaging sheet 10, the packaging sheet 10 is less likely to tear. In addition, when printing is performed, the contours of the printed characters and patterns become clear, and the coloring of the coloring agent is improved, so that the design of the packaging sheet 10 can be improved. When a resin-made fill is used for the packaging sheet 10, examples of the resin to be used include polyolefins such as polypropylene and polyethylene, polyester, polyvinyl alcohol, and the like. As the resin film, a stretched one is preferable. Moreover, the resin film may be either a non-breathable film or a breathable film.

The use of a non-woven fabric as the material of the packaging sheet 10 is preferable in that the texture, flexibility, etc. can be improved. The nonwoven fabric to be used is preferably a meltblown nonwoven fabric, a spunbond nonwoven fabric, or the like, and it is also possible to use a laminate obtained by combining a plurality of layers of these nonwoven fabrics. Moreover, fibers constituting the nonwoven fabric may be polyolefins such as polypropylene and polyethylene, polyamides such as polyester and nylon, and the like.

A single packaging sheet 10 may be composed of a single layer containing any of the different materials described above, or may be a laminate composed of multiple layers. The materials contained in each layer of multiple layers may be the same or different from each other. For example, a sheet obtained by laminating a resin film and paper can be used.

<Packaging structure>
When the absorbent article 1 is wrapped with the packaging sheet 10, the absorbent article 1 is placed on the inner surface of the packaging sheet 10, and both are folded in three or more so that the absorbent article 1 is hidden in the packaging sheet 10. and pack.

As shown in FIG. 1, the packaging sheet 10 has a first region R1 including one end 11 in the longitudinal direction D1 and a second region R2 including the other end 12 on the opposite side of the one end. A region between the second region R2 is a third region R3. When folding the packaging sheet 10 for packaging the absorbent article 1, the second region R2 is folded inward at the second folding position FL2 along the lateral direction D2, and then the first region R1 is folded laterally. It is folded inward at the first folding position FL1 along D2. At that time, the first region R1 and the second region R2 are overlapped, more specifically, the first region R1 is overlapped with the outer surface of the second region R2, and folded in three (folded in three) ( 2 and 3). Before folding the second region R2, the second region R2 is folded at one or more folding positions along the lateral direction D2 between the other end 12 of the second region R2 and the second folding position FL2. Thus, it is possible to obtain a packaging structure that is folded in four or more.

The absorbent article 1 is placed on the inner surface of the packaging sheet 10 so that the longitudinal direction of the absorbent article 1 is aligned with the longitudinal direction of the packaging sheet 10 before the packaging sheet 10 is folded. Then, the absorbent article 1 and the packaging sheet 10 are folded together. After folding, both edges in the direction orthogonal to the folding direction, that is, both edges in the lateral direction D2 are sealed to form

seal portions

15, 15. FIG. The

seal portions

15, 15 can be peeled off by a user's normal force, and are peeled off when the user lifts the first region R1 away from the second region R2 when opening. The

seals

15, 15 may be formed by heat sealing, ultrasonic sealing, adhesives, or mechanical means. The mechanical method is, for example, a method of deforming the surface of the packaging sheet by embossing or the like to engage the packaging sheets. If the packaging sheet 10 comprises or consists of paper, sealing by mechanical means is preferred. The

seal portions

15, 15 are preferably formed within a range of 3 to 10 mm from the edge in the lateral direction D2.

When the absorbent article 1 has wings, the wings are preliminarily folded on the skin surface side (top sheet side) of the absorbent article 1, and then the first region R1 and the second region R2 are folded. .

Such a form of individual packaging in which the packaging sheet 10 is folded in one direction and both edges in the direction perpendicular to the folding direction are sealed is preferable because the absorbent article can be hygienically accommodated in a simple procedure.

<Adhesive>
In the individually packaged absorbent article 100, that is, in a state where the packaging sheet 10 is folded together with the absorbent article 1 as described above, the adhesive 20 is arranged between the first region R1 and the second region R2. . The adhesive 20 is in contact with both the inner surface of the first region R1 and the outer surface of the second region R2, and attaches them to each other to seal the individually packaged absorbent article 100. As shown in FIG. In this specification, the term "sealing" does not mean completely airtight, but means protection from the influence of the external environment so that the quality of the absorbent article can be guaranteed before it is used. Therefore, the term "sealing property" refers to the ability to sufficiently prevent dirt, dust, etc. from entering the interior of the individually packaged absorbent article, and the absorbent article from being touched by fingers or other objects.

Such an adhesive 20 can prevent the gap between the first region R1 and the second region R2 from opening, thereby preventing dirt, dust, etc. from entering between the first region R1 and the second region R2. Intrusions are less likely to enter the individually packaged absorbent article 100 . In addition, it is possible to prevent unintentional disconnection of the

seal portions

15, 15 due to the first region R1 being pulled by a finger or other object being inserted and caught before opening. That is, sufficient sealing properties are obtained.

Although the type of the adhesive 20 is not particularly limited, the adhesive 20 is reattachable, that is, even if the adhesive is once peeled off from the packaging sheet and exposed when the individually packaged absorbent article 100 is unsealed, the adhesive can be repackaged with the adhesive. It is preferable that the sheet can be fixed. More specifically, a hot-melt type adhesive that is easy to handle is preferable. Styrenic polymers, tackifiers, plasticizers, and combinations thereof can be used as the main components of the adhesive 20 . Styrene-based polymers include styrene-ethylene-butylene-styrene block copolymers, styrene-butylene-styrene block copolymers, styrene-isobutylene-styrene copolymers, styrene-butadiene-styrene block copolymers, and the like. , one or more of these can be used. Among these, styrene-butadiene-styrene block copolymers are preferred in terms of good thermal stability. Moreover, as a tackifier and a plasticizer, a solid thing can be used at normal temperature. Examples of tackifiers include C5-based petroleum resins, C9-based petroleum resins, dicyclopentadiene-based petroleum resins, rosin-based petroleum resins, polyterpene resins, and terpene phenol resins. Examples of plasticizers include monomer plasticizers such as triflesyl phosphate, dibutyl phthalate, and dioctyl phthalate, as well as polymer plasticizers such as vinyl polymers and polyesters.

The method of providing the adhesive 20 on the packaging sheet 10 is not particularly limited, but examples include melt coating using a hot melt coater. For example, coating devices such as gravure coaters, spray coaters, spiral guns, bead guns, etc. can be used.

As shown in FIGS. 1 and 2, the adhesive 20 is preferably provided along the lateral direction D2 in plan view. Although the first region R1 and the second region R2 are joined to each other at the

seal portions

15, 15, the inside of the

seal portions

15, 15 in the lateral direction D2, that is, the portion between the

seal portions

15, 15 is seal-joined. not Therefore, by providing the adhesive 20 so as to extend along the lateral direction D2 of the non-bonded regions, preferably extending across the lateral direction D2 of the non-bonded regions, an efficient first The fixing between the first region R1 and the second region R2 can be performed, and the sealing performance can be improved.

The adhesive 20 may be provided in a continuous line, or may be provided in a discontinuous line, that is, the adhesive 20 may be intermittently provided in the lateral direction D2. However, from the viewpoint of improving the sealing property, it is preferable that they are continuous. Further, the planar shape of the adhesive 20 does not have to be a linear shape as shown in FIGS. good too.

The adhesive 20 may be provided over the entire width of the packaging sheet 10 (over the entire lateral direction D2), but the portions where the

seal portions

15, 15 are formed are not obstructed so as not to interfere with the formation of the

seal portions

15, 15. It is more preferable not to provide the seal portion 15 and the inner end of the seal portion 15 in the lateral direction D2 to 3 mm or less inward in the lateral direction D2. Moreover, it is preferable that the length of the adhesive 20 in the lateral direction D2 is approximately the same as the length of the main body of the absorbent article 1 in the lateral direction D2. The width (length in the longitudinal direction D1) w of the adhesive 20 may be 3 to 15 mm.

Furthermore, the amount of adhesive 20 provided is preferably equal to or less than the amount of adhesive provided in one fastening tape used in general individually packaged absorbent articles. As a result, not only the material of the tape main body of the fastening tape, but also the pressure-sensitive adhesive, which is a polymer material, is reduced, and a product with reduced environmental load as a whole can be provided.

<Edge area>
In the individually packaged absorbent article 100 according to this embodiment, a portion of the first region R1 of the packaging sheet 10 is folded back to form the edge region Re. In other words, in the first region R1, the region from the folding position FLe to the one end 11 in the longitudinal direction D1 is the edge region Re (FIG. 1). The edge region Re is formed before the

seal portions

15, 15 are formed, before the first region R1 is folded at the first folding position FL1, or after the first region R1 is folded. good too. By forming the edge region Re, the vicinity of the one end 11 of the longitudinal direction D1 of the first region R1 is doubled and reinforced, making it difficult to deform. deformation away from the second region R2) can be prevented. Therefore, the edge region Re can also improve the sealing performance.

In this embodiment, as shown in FIG. 1, the edge region Re is folded outward. More specifically, the edge region Re including the one end 11 of the first region R1 is folded back toward the outer surface at the folding position FLe extending along the lateral direction D2. As a result, when the absorbent article 1 is individually packaged (FIGS. 2 and 3), the edge region Re becomes the main region Rm of the first region R1 (the portion of the first region R1 other than the edge region Re). ) and exposed to the outside. Here, the edge region Re is not joined to the main region Rm at portions other than the

seal portions

15, 15, that is, portions other than both edge portions in the lateral direction D2. Therefore, when the individually packaged absorbent article 100 is unsealed, the edge region Re can function like a pick tab.

When the edge region Re is folded at the folding position FLe, a clear folding line may be formed at the folding position FLe, or no clear line may be formed at the folding position FLe. For example, the first region R1 may be curved and turned at the folding position FLe.

FIG. 4 shows the initial process of unsealing the individually packaged absorbent article 100 according to the first embodiment. When it is desired to open the individually packaged absorbent article 100, as shown in FIG. 4(a), insert fingers between the edge region Re and the main region Rm, and pinch the edge region Re from both sides. can be done. Then, the first region R1 can be pulled away from the second region R2 in the longitudinal direction D1. When pulled, the adhesion between the first region R1 and the second region R2 by the adhesive 20 is released, and by further pulling, the bonding between the

seal portions

15, 15 is released in the longitudinal direction D1, and the first region R1 is released. is lifted from the second region R2 (FIG. 4(b)). In the example shown in FIG. 4, the adhesive 20 is left on the inner surface of the first region R1.

By forming the edge region Re in this manner, the individually packaged absorbent article 100 can be easily opened. Moreover, since the edge region Re is a part of the first region R1 and is not separate from the packaging sheet 10, there is little concern that it will come off from the packaging sheet 10. Therefore, the opening operation can be reliably performed.

In the first embodiment, the width (length in the longitudinal direction D1) Le (FIG. 1) of the edge region Re is preferably 5 to 15 mm. By setting the width to 5 mm or more, the user can easily pinch and pull the edge region Re. In addition, by setting the width to 15 mm or less, when carrying the individually packaged absorbent article 100 or taking it out from a pouch or the like, a finger or other object may be unintentionally inserted between the edge region Re and the main region Rm. This makes it easy to prevent the first region R1 from being unintentionally peeled off. Moreover, the material cost of the packaging sheet 10 can also be reduced.

The adhesive 20 described above is preferably provided on the inner surface of the main region Rm of the first region R1, in the vicinity of the folding position FLe, along the folding position FLe. In the individually packaged absorbent article 100, the folding position FLe is the boundary between the first region R1 and the second region R2 in plan view (FIG. 2), and corresponds to the opening of the individually packaged absorbent article 100. do. Therefore, by providing the adhesive 20 as close as possible to the folding position FLe, it is possible to effectively block dirt and dust trying to enter inside through the opening. Therefore, even if the adhesive 20 is separated from the folding position FLe in the longitudinal direction D1, the separation distance is preferably 8 mm or less. Also, the adhesive 20 may be provided in contact with the folding position FLe, but in consideration of manufacturing errors, it is preferable that the distance between the adhesive 20 and the folding position FLe is 2 mm or more.

Also, the adhesive 20 is preferably formed within the edge region Re in plan view. Furthermore, in order to prevent the adhesive 20 from adhering to the absorbent article 1, the adhesive 20 is provided at a position where there is no absorbent article 1 in the unfolded state of the individually packaged absorbent article 100 (FIG. 1).

As described above, according to the present embodiment, the individually packaged absorbent article 100 with high sealing performance and easy opening can be configured without the fastening tape. Therefore, it is possible to provide a tapeless product that reduces the burden on the environment at the time of disposal while maintaining ease of use.

The adhesive 20 provided on the packaging sheet 10 can also be used when the packaging sheet 10 is used for disposal of used absorbent articles. In that case, for example, after placing the used absorbent article on the inner surface near the other end 12 of the packaging sheet 10 and wrapping the packaging sheet 10, the part near the one end 11 is attached to the outer surface of the packaging sheet with the adhesive 20. to stop. When wrapping the packaging sheet 10 at the time of disposal, the user can also hold the edge region Re. Since the adhesive 20 is directly applied to the packaging sheet 10, there is little concern that the packaging sheet 10 will come off like the fastening tape even if it is pulled with a strong force.

Note that the adhesive 20 is preferably left in the first region R1. As a result, when the packaging sheet 10 is used for disposal of used absorbent articles, the used absorbent article is placed on the inner surface of the packaging sheet 10 and the packaging sheet 10 is wrapped around the packaging sheet 10 to finally remove the first region. The end of the packaging sheet 10 can be fixed with the adhesive 20 left in R1 (main region Rm). On which sheet the adhesive 20 sandwiched between the two sheets should be left is determined by the affinity between the surface of the sheet and the adhesive 20 . In other words, if one of the two sheets has a surface with a higher affinity than the other, the adhesive 20 is left on the sheet with the higher affinity. Therefore, the surface of one sheet is subjected to a treatment to enhance affinity with the adhesive, for example, a treatment (smoothing treatment) to smooth the surface of one sheet to enhance adhesion to the adhesive, and the other sheet By not applying the same treatment to the surface of the sheet, the adhesive 20 can be left on one sheet. The smoothing treatment can be performed by applying pressure to the packaging sheet using a roller having a smooth surface or by applying a special treatment agent. For example, in the present embodiment, since the adhesive 20 is arranged between the inner surface of the first region R1 and the outer surface of the second region R2, at least the portion of the first region R1 facing the adhesive 20 is smoothed. , the adhesive 20 remains in the first region R1 after the first region R1 is peeled off from the second region R2. A packaging sheet 10 that has been subjected to a smoothing treatment on the entire inner surface and not subjected to the same treatment on the entire outer surface may be used. In addition, the surface of one sheet is left untreated, and the surface of the other sheet is roughened to reduce the total contact area between the surface of the other sheet and the adhesive, so that the adhesive can be easily separated. This also makes it easier for the adhesive 20 to remain on one sheet.

In addition, when the packaging sheet 10 contains fibers such as paper or non-woven fabric, the surface of the sheet on which the adhesive 20 does not remain after the first region R1 is peeled off from the second region R2 Preferably, the fibers are prevented from being detached. Therefore, for example, when the adhesive 20 is left in the first region R1 in the illustrated example, the fiber is coated with a chemical or the like so that the fiber does not come off at least from the portion facing the adhesive 20 in the second region R2. It is preferable that a detachment prevention treatment is applied, or the entire packaging sheet 10 is made of a material from which the fibers are particularly difficult to detach from the outer surface.

<Modification>
FIG. 5 shows a modification of the adhesive 20. As shown in FIG. The adhesive 20 may be formed in discontinuous lines as shown in FIG. 5(a). Further, if the adhesive 20 is provided along the folding position FLe and along the horizontal direction D2, it may be formed in dots. In that case, the amount of the adhesive 20 can be reduced while maintaining the sealing properties of the adhesive 20 .

Also, the adhesive 20 may be provided in a plurality of cases aligned in the longitudinal direction D1. For example, as shown in FIG. 5B, the adhesive 20 can be provided in two rows in the longitudinal direction D1. In that case, since two stages of attachment locations are formed in the longitudinal direction D1, sealing performance can be improved.

Furthermore, FIG. 6 shows a modified example of the packaging sheet 10. FIG. In the example shown in FIG. 6, the inner surface (the surface on which the absorbent article is placed) and the outer surface of the packaging sheet 10 are different in color. As described above, when the absorbent article 1 of the present embodiment is wrapped, the outer surfaces of the main region Rm of the first region R1 and the second region R2 are exposed, while the inner surface of the edge region Re is exposed. Therefore, by making the outer surface and the inner surface of at least the first region R1 different in color, there is a difference in color between the second region R2 and the edge region Re and between the first region R1 and the edge region Re. This makes it easier for the user to recognize the location of the edge region Re. Therefore, the unsealing operation becomes smooth. Also, as the packaging sheet 10, a sheet material having different colors on the entire outer surface and the entire inner surface can be used. In that case, coloring of a specific portion is not required, which is preferable in that manufacturing is facilitated.

Note that the configuration for facilitating recognition of the edge region Re is not limited to the above. For example, the edge region Re may be embossed or an additional sheet may be applied to the inner surface of the edge region Re. In that case, since the rigidity of the edge region Re can be made higher than that of other regions of the packaging sheet 10, the edge region Re can be reliably gripped when the edge region Re is pinched and pulled. and preferred.

[Second embodiment]
FIG. 7 shows a plan view of the individually packaged absorbent article 200 according to the second embodiment in an unfolded state (a state in which the packaging sheet 10 is unfolded), and FIG. 8 shows the individually packaged absorbent article 100 of FIG. A plan view is shown. 9 shows a sectional view taken along line B1-B1 of FIG. 7, and FIG. 10 shows a sectional view taken along line B2-B2 of FIG. The basic configuration of the individually packaged absorbent article 200 according to the second embodiment is the same as the individually packaged absorbent article 100 (FIGS. 1 to 6) according to the first embodiment, but the individually packaged absorbent article 200 is: It is different from the individually packaged absorbent article 100 (FIGS. 1 to 6) in that the folding direction of the edge region Re' is different, and accordingly the arrangement of the adhesive 20' is also different. Note that unless otherwise described, the individually packaged absorbent article 200 according to the second embodiment has the same configuration as the individually packaged absorbent article 100 according to the first embodiment, and exhibits the same effects.

As shown in FIGS. 7 to 10, the edge region Re' is folded inward. In FIG. 7, the folding position FLe' extending along the lateral direction D2 is a valley folding line, and the edge region Re' including the one end 11 of the first region R1 is folded back toward the inner surface. In this embodiment, in the individually packaged absorbent article 200 (with the absorbent article 1 wrapped), the edge region Re' is hidden inside.

Also in the present embodiment, the vicinity of the end of the first region R1 in the longitudinal direction D1 (near the boundary between the first region R1 and the second region R2 in plan view) is doubled and reinforced by the edge region Re′. It is possible to suppress the tendency of the first region R1 to deform away from the second region R2, thereby improving the sealing performance. Furthermore, in this embodiment, when the package is opened, the user can hold a thickened portion where the edge region Re' of the first region R1 and the main region Rm are overlapped, so that the packaging sheet 10 can be opened. Since it can be gripped securely, it can be opened smoothly. Furthermore, since the edge region Re' is not exposed to the outside, when the individually packaged absorbent article 200 is carried around, put into a pouch or the like, or taken out of the pouch, the edge region Re' is not exposed to fingers or objects. It is possible to reduce the possibility that the packaging sheet is torn due to being caught in the

In the second embodiment, the width (length in the longitudinal direction D1) Le' (FIG. 7) of the edge region Re' is preferably 10-20 mm, more preferably 10-15 mm. By setting the width to 10 mm or more, the above-described effect of reinforcing the edge of the first region R1 can be improved, and by setting the width to 20 mm or less, the region where the sheets overlap each other becomes excessively large and unnecessary. It is possible to prevent the occurrence of stiffness. Moreover, the material cost of the packaging sheet 10 can also be reduced.

In addition, in this embodiment, the adhesive 20' is provided on the outer surface of the packaging sheet 10 as shown in FIG. As a result, when the edge region Re' is folded inward, the edge region Re' faces the second region R2, and the adhesive 20' is arranged therebetween (FIGS. 8 and 8). Figure 10). Therefore, also in this embodiment, the adhesive 20' can adhere the first region R1 and the second region R2 together.

As described above, the adhesive 20' is sandwiched between the outer surface of the edge region Re' and the outer surface of the second region R2 (Fig. 10). For this reason, the adhesive 20' comes into contact with the upper and lower sides of both the outer surfaces of the packaging sheet 10, so either region is treated to reduce the affinity with the adhesive 20', or the affinity is improved. It is preferable that the adhesive 20' remains on the side having a lower affinity for the adhesive 20' when the package is opened. For example, the entire outer surface of the packaging sheet 10 is subjected to a smoothing treatment and the entire inner surface is left untreated, thereby leaving the adhesive 20' in the edge region Re'.

The adhesive 20' is provided along the lateral direction D2. The placement of the adhesive 20' can be the same as the adhesive 20 described in the first embodiment, but as shown in FIGS. Intermittent is preferred. The length G of the intermittent portion in the lateral direction D2 can be 10-40 mm. In an example where such adhesive 20' is intermittent, at the time of opening, between the first region R1 and the second region R2, more specifically between the edge region Re' and the second region R2 (FIG. 9) It becomes easy to insert a finger. Therefore, the first region R1 can be easily picked up and opened.

Further, if the packaging sheet 10 has a certain degree of rigidity, for example, if the packaging sheet is made of a highly rigid material such as paper, or has a thickness that can impart a certain degree of rigidity, the edge portion Region Re' tends to return to the state before folding. Therefore, the edge region Re' acts to close the gap between the edge region Re' and the second region R2 even in the central portion in the second direction D2 where there is no adhesive (FIG. 9). Therefore, in this embodiment in which the adhesive is arranged at a predetermined interval (G), the sealing property is ensured along the opening before opening, and the first The region R1 is easy to pick and open.

FIG. 11 shows a modification of the second embodiment. In the example of FIG. 11, the edge of the first region R1 is diffracted twice. More specifically, the first edge region Re'1 is folded at the first folding position FLe1, and the second edge region Re'2 is folded at the second folding position FLe2. The adhesive 20' is provided on the outer surface of the second edge region Re'2. With this configuration, the first region R1 of the individually packaged absorbent article 200 has a portion in which the main region Rm, the second edge region Re'2, and the first edge region Re'1 are overlapped in order. , the edge of the first region R1 can be thickened and rigid. Thus, in the configuration in which the edge region is formed by folding a plurality of times, the effect of reinforcing the end of the first region R1 is increased, and the sealing performance can be improved. In addition, since the rigidity of the portion held by the user is increased when opening the package, it becomes easier to open the package by pulling the first region R1.

Although the present invention has been described above based on the embodiments, the present invention is not limited to these embodiments. In addition, the above embodiments can be modified, modified, replaced, added, deleted, combined, etc. within the scope of the claims, and these also belong to the technical scope of the present invention. Also, the features described above can be combined arbitrarily. For example, the central intermittent adhesive arrangement shown in FIGS. 7 and 8 may be applied in the first embodiment.

Further, specific embodiments of the present invention will be described below.

(Appendix 1)
An aspect according to Supplementary Note 1 is an individually packaged absorbent article including a packaging sheet and an absorbent article packaged by the packaging sheet, wherein the packaging sheet includes one end of the packaging sheet in the first direction. 1 region and a second region including the other end opposite to the one end, wherein the first region and the second region are folded such that the first region overlaps the outer surface of the second region , both edges in a second direction orthogonal to the first direction are sealed along the first direction, and an adhesive is provided between the first region and the second region for fixing both regions and an edge region including the one end of the first region is folded outward.

In the aspect according to Supplementary Note 1, since the adhesive is provided for fixing the first region and the second region, the first region and the second region of the packaging sheet are prevented from opening, and both It is possible to prevent dirt and dust from entering the interior of the individually packaged absorbent article from between the regions, and to prevent unintentional insertion of a finger or other object between the first region and the second region and unsealing. That is, it is possible to secure the sealing property of the individually packaged absorbent article.

Furthermore, since the edge region including one end in the longitudinal direction of the first region arranged outside the individually packaged absorbent article is folded back, the first region is separated from the folding position of the first region. The side (near the boundary between the first region and the second region in a plan view) is double reinforced, making it difficult to deform. Therefore, the tendency of the first region to open away from the second region can be suppressed, and the sealing performance can be further improved. Therefore, according to this aspect, an individually packaged absorbent article having excellent sealing properties can be configured without using a fastening tape. Therefore, it is possible to provide an environmentally friendly product (also referred to as a tapeless product) that uses less plastic material and is not equipped with a fastening tape. In this aspect, since the edge region is folded outward, the edge region is exposed outside the main region (portion other than the edge region) of the first region. Since this edge region is not joined to the main region except for the seal portion, the user can put his or her fingers between the edge region and the main region to pinch and pull the edge region, thereby enabling individual packaging. Absorbent articles can be easily opened.

(Appendix 2)
In the aspect according to Supplementary Note 2, the adhesive is provided along the folding position of the folding.

According to the aspect of Appendix 2 above, the adhesive is provided along the opening of the individually packaged absorbent article, and excellent sealing properties can be obtained even with a small amount of adhesive.

(Appendix 3)
In the aspect according to Supplementary Note 3, the adhesive is provided at a predetermined interval in the central portion of the packaging sheet in the second direction.

The part that the user grips when unsealing is the central part in the second direction near the folding position of the edge region. According to the aspect of Supplementary Note 3, since the adhesive is not provided in the central portion in the second direction, the first region can be easily grasped, and the individually packaged absorbent article can be smoothly unsealed.

(Appendix 4)
In the aspect according to Supplementary Note 4, the first region has the edge region and a main region other than the edge region, and at least the inner surface of the edge region and the outer surface of the main region have different colors. ing.

In the individually packaged absorbent article, the outer surface of the main area and the inner surface of the edge area are exposed to the outside in the first area. Therefore, according to the aspect of Supplementary Note 4, at least the outer surface of the main region and the inner surface of the edge region are made different in color, so that the location of the edge region can be easily recognized by the color difference.

(Appendix 5)
An aspect according to Supplementary Note 5 is an individually packaged absorbent article including a packaging sheet and an absorbent article packaged by the packaging sheet, wherein the packaging sheet includes one end of the packaging sheet in the first direction. 1 region and a second region including the other end opposite to the one end, wherein the first region and the second region are folded such that the first region overlaps the outer surface of the second region , both edges in a second direction orthogonal to the first direction are sealed along the first direction, and an adhesive is provided between the first region and the second region for fixing both regions and an edge region including the one end of the first region is folded inward, and the adhesive is applied along the folding position of the folding at a central portion in the second direction at a predetermined interval. It is set aside.

According to the aspect of Supplementary Note 5, since the adhesive is provided for fixing the first region and the second region, the first region and the second region of the packaging sheet are prevented from opening. , prevent dirt and dust from entering the interior of the individually packaged absorbent article from between the two regions, and prevent unintentional insertion of a finger or other object between the first region and the second region to unseal the article. can. That is, it is possible to secure the sealing property of the individually packaged absorbent article.

Furthermore, since the edge region including one end in the longitudinal direction of the first region arranged outside the individually packaged absorbent article is folded back, the first region is separated from the folding position of the first region. The side (near the boundary between the first region and the second region in a plan view) is double reinforced, making it difficult to deform. Therefore, the tendency of the first region to open away from the second region can be suppressed, and the sealing performance can be further improved. Therefore, according to this aspect, an individually packaged absorbent article having excellent sealing properties can be configured without using a fastening tape. Therefore, it is possible to provide an environmentally friendly product (also referred to as a tapeless product) that uses less plastic material and is not equipped with a fastening tape. In this aspect, since the edge region is folded inward, it is possible to prevent the edge region from being caught by a hand or an object and tearing the packaging sheet when carrying the individually packaged absorbent article.

In addition, in this aspect, since the adhesive is provided at the central portion in the second direction at predetermined intervals, the user can easily grip the first region at the central portion in the second direction where there is no adhesive. and easy to open.

(Appendix 6)
In the aspect according to Supplementary Note 6, the packaging sheet includes paper.

According to the aspect of Supplementary Note 6 above, by using paper for the packaging sheet itself, it is possible to provide an environmentally friendly product and to impart a unique texture.

This application claims priority based on Japanese Patent Application No. 2022-021222 filed on February 15, 2022, the entire contents of which are incorporated herein.

1 Absorbent article 3 Top sheet 4 Absorber 7 Side sheet 10 Wrapping sheet 11 One end 12 in first direction (longitudinal direction) 12 Other end 15 in first direction (longitudinal direction) Seal portions 20, 20' Adhesive 100, 200 pieces Absorbent article D1 First direction D2 of packaging sheet Second direction FL1 First folding position FL2 Second folding positions FLe, FLe' Folding position FLe1 First folding position FLe2 Second folding position R1 First region R2 2 regions R3 3rd regions Re, Re' 1st region edge region Re'1 1st edge region Re'2 2nd edge region Rm 1st region main region

Claims

An individually packaged absorbent article comprising a packaging sheet and an absorbent article packaged by the packaging sheet,
The packaging sheet has a first region including one end of the packaging sheet in the first direction and a second region including the other end opposite to the one end,
The first region and the second region are folded such that the first region overlaps the outer surface of the second region, and both edges in a second direction orthogonal to the first direction are along the first direction. is sealed with
An adhesive is provided between the first region and the second region to fix both regions,
An individually packaged absorbent article, wherein an edge region including the one end of the first region is folded outward.
The individually packaged absorbent article according to claim 1, wherein the adhesive is provided along the folding position of the folding.
The individually packaged absorbent article according to claim 2, wherein the adhesive is provided at a predetermined interval in the central portion of the packaging sheet in the second direction.
The first region has the edge region and a main region other than the edge region,
4. The individually packaged absorbent article according to any one of claims 1 to 3, wherein at least the inner surface of said edge region and the outer surface of said main region have different colors.
An individually packaged absorbent article comprising a packaging sheet and an absorbent article packaged by the packaging sheet,
The packaging sheet has a first region including one end of the packaging sheet in the first direction and a second region including the other end opposite to the one end,
The first region and the second region are folded such that the first region overlaps the outer surface of the second region, and both edges in a second direction orthogonal to the first direction are along the first direction. is sealed with
An adhesive is provided between the first region and the second region to fix both regions,
An edge region including the one end of the first region is folded inward,
The individually packaged absorbent article, wherein the pressure-sensitive adhesive is provided at a predetermined interval in the central portion in the second direction along the folding position of the folding.
The individually packaged absorbent article according to any one of claims 1 to 5, wherein the packaging sheet contains paper.