JPH10127688A - Packing structure for absorptive article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly take out an absorptive article and to prevent release paper from being detached from a packing material when taking out the absorptive article. SOLUTION: This structure is composed of a sanitary napkin 10 as the absorptive article and a packing material 20 and formed by freely attachably and detachably adhering an adhesive layer provided on the skin non-abutting surface of the napkin with release paper 21 fixed on the inner surface of the packing material 20, and the sanitary napkin 10 forms a folded part 17 while being folded in its lengthwise direction, and is provided with the take-out port of the sanitary napkin 1 formed by opening the packing material 20 along the lengthwise side edge of the sanitary napkin 10. Then, the release paper 21 fixes the terminal part on the take-out port side on the inner surface and fixes the terminal part on the take-out port side on the inner surface while turning it over toward the inner surface of the wrapping material 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to shorts,
The present invention relates to an absorbent article packaging structure in which absorbent articles such as sanitary napkins having a sufficient tack force are packaged so that release paper is not required to be disposed.

[0002]

2. Description of the Related Art An absorbent article such as a sanitary napkin is usually provided with an adhesive for fixing the sanitary napkin to shorts and preventing the sanitary napkin from shifting during use. And a release paper for protecting the paper. In such an absorbent article, it is necessary to peel and discard the release paper when using the absorbent article. Therefore, disposal of the release paper is troublesome, and when the toilet article is discarded, the toilet is clogged. There is.

[0003] In view of the above, various technologies relating to a packaging structure of an absorbent article having no release paper have been proposed. Specifically, Japanese Patent Application Laid-Open No. 6-315504 discloses an absorbent article and a packaging material for packaging the absorbent article. Consisting of a pressure-sensitive adhesive layer provided on the non-skin contact surface of the absorbent article, and a release paper fixed to the inner surface of the packaging material, which is removably adhered to the absorbent article. Folding in the longitudinal direction to form a bent portion, and taking out the absorbent article formed by opening the packaging material along the longitudinal side edge or the bent portion of the absorbent article A mouth is provided, and the release paper is
There has been proposed a packaging structure for an absorbent article in which the end on the outlet side is fixed to the inner surface.

[0004] Such a packaging structure has a problem as shown in FIGS. 8 and 9. That is, as shown in FIG. 8, the fixing unit 12 for fixing the release paper 121 to the packaging material 120 is used.
When 2 is provided at the position where the adhesive layer 116 is provided, there is a problem that the sanitary napkin 110 cannot be taken out smoothly even if a force for taking it out in the direction of the arrow is applied. Also, as shown in FIG.
When the adhesive 22 is not provided on the adhesive 216 and provided on the outlet side, the sanitary napkin 210 can be removed smoothly, but a shear force is applied to the fixing portion 222 in the direction of the arrow. However, the release paper 221 comes off the packaging material 220, and as a result, there is a problem that the released release paper 221 becomes dust separate from the packaging material 220.

Accordingly, an object of the present invention is to provide a packaging structure for an absorbent article that allows smooth removal of the absorbent article and prevents the release paper from coming off the packaging material when removing the absorbent article. To provide.

[0006]

SUMMARY OF THE INVENTION The present invention comprises an absorbent article and a packaging material for wrapping the absorbent article, wherein an adhesive layer provided on a non-skin contact surface of the absorbent article, The absorbent article is detachably adhered to a release paper fixed to the surface, and the absorbent article is folded in the longitudinal direction to form a bent portion, and the longitudinal side edge of the absorbent article is formed. Or, along the bent portion, a takeout opening of the absorbent article formed by opening the packaging material is provided, and the release paper has an end on the takeout side fixed to the inner surface. In the packaging structure of the absorbent article that is, the release paper is folded back toward the inner surface of the packaging material at the end on the outlet side,
The object has been achieved by providing a packaging structure for an absorbent article, which is fixed to the inner surface.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a packaging structure for an absorbent article according to the present invention will be described in more detail with reference to the drawings. Here, FIG. 1 is a perspective view showing a sanitary napkin packaging structure as one form of the absorbent article packaging structure of the present invention. FIG. 2 is a sectional view taken along the line II-II of the packaging structure shown in FIG. FIG. 3 is a perspective view showing a sanitary napkin used in the packaging structure shown in FIG. 1, and FIG. 4 is a perspective view showing a packaging material used in the packaging structure shown in FIG. FIG. 5 is a perspective view showing an embodiment in which the packaging structure shown in FIG. 1 is opened and the sanitary napkin is taken out, and FIG. 6 is a VI-V of FIG.
It is I sectional drawing. FIG. 7 is a schematic diagram showing a main part of a manufacturing process of the sanitary napkin packaging structure shown in FIG.

As shown in FIGS. 1 and 2, a sanitary napkin packaging structure 1 as a packaging structure for an absorbent article according to the present embodiment comprises a sanitary napkin 10 and a packaging material 20 for packaging the same. The adhesive layer 16 provided on the non-skin contact surface 12 of the napkin 10 and the release paper 21 fixed to the inner surface of the wrapping material 20 are detachably adhered to each other. The sanitary napkin 10 is folded along its longitudinal direction to form a bent portion 17, and the sanitary napkin 10 is formed by opening the packaging material 20 along the longitudinal side edge of the sanitary napkin 10. An outlet 26 (see FIGS. 5 and 6) is provided, and the release paper 21 has an end 27 on the outlet 26 side fixed to the inner surface.

More specifically, the sanitary napkin packaging structure 1 according to the present embodiment comprises two bent portions 17 which divide the longitudinal direction of the sanitary napkin 10 into approximately three equal parts, a front part 13, a center part 14 and a rear part 15. In the rear part 15, the front part 1
In the order of 3, the sanitary napkin 10 folded into three on the skin contact surface 11 side of the central portion 14 is packaged with the packaging material 10 so that the adhesive layer 16 abuts on the release paper 21. 2
0 are fixed to both side edge portions 24 and edge portions 25 (see FIG. 3). Here, the front part 13 is a sanitary napkin 1.
0 is a part located in front of the user when used. Further, both side edge portions 24 and the edge portion 25 of the packaging material 20 are joined by heat sealing, and along one longitudinal edge 18 of the sanitary napkin 10,
A perforation 23 for forming the outlet 26 is provided.

As shown in FIG. 3, the sanitary napkin 10 packaged by the packaging structure of the present invention has an adhesive layer 16 at a front portion 13 and a central portion 14 on a non-skin contact surface 12. ing. In the sanitary napkin 10, the skin contact surface 11 is formed of a liquid-permeable sheet material, and the non-skin contact surface 12 is formed of a liquid-impermeable sheet material. This is a normal sanitary napkin having a liquid-retentive absorber between the non-skin contact surface 11 and the non-skin contact surface 12.

The pressure-sensitive adhesive layer 16 is formed by applying a pressure-sensitive adhesive on the non-skin contact surface 12 or by applying the pressure-sensitive adhesive to a release paper 21 and transferring the pressure-sensitive adhesive to the non-skin contact surface 12. You. As the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer 16, for example, a pressure-sensitive adhesive containing a styrene-based block polymer, a tackifier, and a softener as main components and maintaining a two-phase block structure of a styrene phase and a rubber phase is used. Can be

The styrene-based block polymers include styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS), and styrene-butadiene-styrene block copolymer (SBS). ), Styrene-ethylene-propylene-styrene copolymer (SEPS), and the like. These styrenic block polymers preferably have a styrene moiety molecular weight of 7000 to 2
000, the molecular weight of the rubber part is preferably 35,000
~ 70,000 block copolymer.

[0013] As the tackifier, softening point of 80 ° C. or higher, C ₅ petroleum resins molecular weight of 400 to 2,000, C ₉ petroleum resins, C ₅ / C ₉ petroleum resins, alpha
Examples thereof include a polyterpene resin, a rosin-based resin, or a hydrogenated product thereof, which is a copolymer of pinene, β-pinene, or dipentene. The softener has a softening point of 10 ° C.
A process oil having an average molecular weight of 200 to 700,
Various plasticizers, polybutene, liquid resin and the like can be mentioned.

As the above-mentioned pressure-sensitive adhesive, those having the following composition are particularly preferable. Styrene block polymer 100 parts by weight, tackifier 150-200 parts by weight, softener 30-100 parts by weight

As shown in FIG. 4, the packaging material 20 has a release paper 21 fixed to a portion corresponding to the adhesive layer 16 of the sanitary napkin 10 via a fixing portion 22.
As the packaging material 20, a polyolefin film having a thickness of 5 to 20 μm is preferably used.

An end 27 of the release paper 21 on the side of the take-out port is fixed to the inner surface of the packaging material 20 via a fixing portion 22. In addition, since the end portion 27 does not need to have a peeling property to the adhesive layer 16, the end portion 2
7 does not have to be coated with a release agent. As the release paper 21, a release paper substrate coated with a release agent is preferably used. As the release paper substrate, a thickness of 5 to 5
Preferred examples include a film of 50 μm polypropylene, low-density polyethylene, polyvinyl alcohol, or the like, a nonwoven fabric, a paper, and a composite material thereof. The release agent is preferably a silicone-based, fluorine-based, or isocyanate-based release agent. In particular, as the release agent, it is preferable to apply a silicone resin-based material to the release paper substrate and heat and dry it, or spray it with a spray to form a thin film and use it.

The fixing portion 22 is formed by, for example, an adhesive or a heat seal. As the adhesive, a material containing a styrene-based block polymer as a main component as in the case of the adhesive layer 16 is used. In the case of heat sealing, it is preferable to use a polyolefin-based film for both the packaging material and the release paper substrate. In the sanitary napkin packaging structure 1 of the present embodiment, the outlet 26 may be provided along the bent portion 17 obtained by folding the sanitary napkin 10. However, when the napkin is folded in three as in the present embodiment, it is easier to remove the napkin without the outlet 26 along the longitudinal end (the end on the front portion 13 side) of the exposed napkin. It is preferred in that respect.

It is preferable that the release paper 21 and the adhesive layer 16 are both selected so that the 180 ° peel strength measured by the following method is preferably 30 to 90 g / 50 mm. In the combination of the pressure-sensitive adhesive having the 180 ° peel strength and the release paper 21, the usual release paper 21 is used.
However, the shear strength of the material fixed to the entire surface of the packaging material 20 reaches several hundred g / 50 mm to several kg / 50 mm, and it cannot be easily peeled. Further, if the shear strength is reduced so that the adhesive layer 16 can be easily peeled off, the adhesive layer 16 and the release paper 21 can be easily peeled off during storage of the packaging structure (before using the sanitary napkin). There are adverse effects such as the adhesive layer 16 sticking to a portion other than the release paper 21. Further, the shear strength in the configuration in which the fixing portion 22 of the release paper 21 is provided on the inner surface of the packaging material on the side opposite to the takeout opening 26 is such that the release paper 21 fixed via the fixing portion 22 on the takeout side as in the present invention is separated It is much larger than the 180 ° peel strength when performing, and in fact, in the combination of the normal adhesive 16 and the release paper 21,
Attempting to peel it off will break the packaging material 20.

<180 ° peel strength (adhesive strength)> A pressure-sensitive adhesive was applied to a polyethylene terephthalate film with a thickness of 50 μm.
m, and the 180 ° peel strength was measured when a 2 kg rubber roller was pressed against a stainless steel plate (sus304) with one round trip.

Thus, in the sanitary napkin packaging structure 1 of the present embodiment, the release paper 21
The end 27 on the sixth side is folded toward the inner surface of the packaging material 20 and is fixed to the inner surface.

More specifically, the release paper 21
Completely covers the pressure-sensitive adhesive layer 16 and folds a portion of the outlet 26 that is not in contact with the pressure-sensitive adhesive layer 16 toward the inner surface side. It is fixed to the inner surface at the end portion 27 via the fixing portion 22. Here, the length L of the folded portion is preferably set to 5 to 50% of the entire length of the release paper 21.

When the sanitary napkin 10 is used, first, as shown in FIGS. 5 and 6, the packaging structure 1 is opened by opening a perforation 23 provided on the packaging material 20, and a take-out opening is provided. 26, and the sanitary napkin 10 is pulled out from the outlet 26 in the direction of the arrow. By the operation of pulling out the sanitary napkin, as shown in FIGS. 5 and 6, the release paper 21 is automatically peeled off from the adhesive layer 16 to expose the adhesive layer 16 to the sanitary napkin 1.
0 can be taken out and a sanitary napkin 10 can be used.

The sanitary napkin packaging structure 1 of the present invention comprises:
As described above, since the sanitary napkin 10 can be pulled out from the longitudinal side edge or the bent portion 17 of the sanitary napkin 10, the adhesive layer 16 is peeled off from the release paper 21 while the sanitary napkin 10 is folded. Can be. When removing the sanitary napkin 10, the adhesive layer 16 is
There is no adverse effect such as sticking to portions other than 1.
Further, as shown in FIG. 6, when the sanitary napkin 10 is taken out, the release paper 21 does not peel off from the packaging material 20 because no excessive shearing force is applied to the fixing portion 22 at the time of taking out.

The sanitary napkin packaging structure 1 of the present embodiment comprises
It is formed as follows. In order to form the sanitary napkin packaging structure 1 of the present embodiment, first, the sanitary napkin shown in FIG.
In the order of 3, the central part 14 is folded in three on the skin contact surface 11 side. Separately, as shown in FIG.
7 fixes the folded release paper 21. Next, the front part 13 and the center part 14 of the sanitary napkin folded in three.
Is brought into contact with the release paper 21 fixed to the packaging material 20, and the packaging material 20 is attached to both edges 25,
25 ′ (see FIG. 4) is the front portion 13 of the sanitary napkin 10.
The packaging material 20 can be formed by folding it to the side and finally fixing the both side edges 24 and the edge 25 of the packaging material 20 by heat sealing or the like.

Further, a method for industrially manufacturing the sanitary napkin packaging structure 1 of the present embodiment will be described with reference to FIG. When the sanitary napkin packaging structure 1 of this embodiment is manufactured industrially, as shown in FIG.
An adhesive layer forming step A in which the release paper 21 coated with is applied to the sanitary napkin 10 ′ to form the adhesive layer 16, and a folding step in which the end 27 of the release paper 21 attached to the sanitary napkin 10 is folded back B, a folding step C for folding the sanitary napkin 10 into three folds, and a packaging step D for packaging the sanitary napkin 10 folded in three with the packaging material 20 are sequentially performed.

In the adhesive layer forming step A, the adhesive 16 'is continuously applied to the continuous body of release paper 21', and the continuous body of release paper 21 'coated with the adhesive is cut at a predetermined position. This is performed by attaching the cut release paper 21 to the front portion and the center portion of the sanitary napkin 10 ′ so that the applied adhesive comes into contact with the non-skin contact surface 12. In addition, adhesive 1
The application of 6 ′ and the cutting of the continuous body of release paper 21 ′ can be performed using a known application device 50 and a known cutting device 51, respectively. In addition, when attaching, the roller 52 is pressed. The folding step B is performed by folding the end portion 27 of the release paper 21 upward (toward the side opposite to the sanitary napkin 10) using a known film folding device 52. The folding step C includes:
Using a known folding device (not shown), the rear portion 14 and the front portion 1 are placed on the skin contact surface 11 side of the central portion 14 in the order described above.
3 by folding. The packaging step D includes an adhesive 22 ′ for forming the fixing portion 22 on the continuous body 20 ′ of the packaging material.
After applying, the sanitary napkin 10 folded in three by a continuous body 20 ′ of the packaging material to which the adhesive 22 ′ is applied,
The adhesive 22 ′ is wrapped so as to contact the folded end portion 27 of the release paper 21, and finally, a predetermined portion is sealed by heat sealing or the like, and a perforation 23 for forming an outlet is formed. (Not shown). The application of the adhesive 22 ′ is performed using a known adhesive application device 54.

It should be noted that the packaging structure of the absorbent article of the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the spirit of the present invention. For example, a sanitary napkin with wings or an incontinence pad can be used as the absorbent article.

[0028]

The packaging structure of the absorbent article of the present invention allows the absorbent article to be taken out smoothly and the release paper does not come off the packaging material when the absorbent article is taken out. is there. Therefore, it is excellent in portability, easy to use, and has no extra dust.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sanitary napkin packaging structure as one embodiment of the absorbent article packaging structure of the present invention.

FIG. 2 is a sectional view of the packaging structure shown in FIG. 1 taken along the line II-II.

FIG. 3 is a perspective view showing a sanitary napkin used in the packaging structure shown in FIG. 1;

FIG. 4 is a perspective view showing a packaging material used for the packaging structure shown in FIG. 1;

FIG. 5 is a perspective view showing an aspect in which the packaging structure shown in FIG. 1 is opened and a sanitary napkin is taken out.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a schematic view showing a main part of a manufacturing process of the packaging structure for the sanitary napkin shown in FIG. 1;

FIG. 8 is an enlarged sectional view showing a fixing portion of a release paper in a conventional packaging structure.

FIG. 9 is an enlarged sectional view showing a fixing portion of a release paper in a conventional packaging structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sanitary napkin packaging structure 10 Sanitary napkin 11 Skin contact surface 12 Non-skin contact surface 13 Front part 14 Central part 15 Back part 16 Adhesive layer 17 Folding part 18 1 side edge 20 Packaging material 21 Release paper 22 Fixation Part 23 Perforation 24 Side edge part 25 Edge part 26 Outlet

Claims (1)

[Claims] 1. An adhesive layer comprising an absorbent article and a packaging material for packaging the absorbent article, the adhesive layer provided on a non-skin contact surface of the absorbent article, and a release paper fixed to an inner surface of the packaging material. Is detachably adhered, the absorbent article is folded in the longitudinal direction to form a bent portion, and along the longitudinal side edge or the bent portion of the absorbent article, A take-out opening for the absorbent article formed by opening the packaging material is provided, and the release paper has a packaging structure for the absorbent article in which an end on the take-out opening side is fixed to the inner surface. 3. The packaging structure for an absorbent article according to claim 1, wherein the release paper has an end on the side of the take-out opening folded back toward an inner surface of the packaging material and fixed to the inner surface.