JPH0648635U - Sanitary napkin packaging structure - Google Patents

Abstract

(57) [Summary] [Purpose] Since there is no need to peel off or discard the release paper when using a sanitary napkin, there is no problem associated with the release or discard, and it has sufficient fixing force for shorts. To provide a sanitary napkin packaging structure. In a packaging structure for a sanitary napkin, which is formed by folding a sanitary napkin such that its non-skin contact surface is exposed and individually wrapping it with a packaging material, the exposed non-skin of the sanitary napkin is folded. A sanitary napkin packaging structure, wherein an adhesive layer is provided on each of the contact surfaces, and a peeling layer is provided on a portion of the inner surface of the packaging material corresponding to the adhesive layer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sanitary napkin packaging structure that does not have a release paper for protecting an adhesive layer for fixing to shorts and has sufficient fixing force for shorts.

[0002]

[Prior art]

 The sanitary napkin is usually provided with an adhesive for fixing the napkin to the shorts and for preventing the slippage during use, and a release paper for protecting the sanitary napkin. When using a napkin, since it is necessary to peel off the release paper and discard it, it is difficult to dispose of the release paper, and when it is discarded in the toilet bowl, there is a problem that the toilet bowl becomes clogged.

Therefore, various technologies related to the packaging structure of a sanitary napkin having no release paper have been proposed, and specifically, the following are listed. A package for a biologic napkin, which comprises an adhesive layer of a sanitary napkin directly contacting a polyolefin film (Japanese Utility Model Publication No. 59-9615). A package (Japanese Utility Model Publication No. 59-25371) in which a sanitary napkin is individually packaged by a wrapping material made of a water-soluble film and having a release layer at a portion in contact with the adhesive layer of the sanitary napkin. A packaging body in which the adhesive layer of the sanitary napkin is exposed from the open end of the pocket portion of the packaging material, and the non-adhesive layer of the packaging material is fixed to the adhesive layer on the upper surface of the pocket portion (Actual Development No. 57). -34211). A packaging material that has a peeling treatment part at the part that contacts the adhesive part of the sanitary napkin seals four sides of two sheets and provides perforations for opening. (Kaisho 58-179120). A sanitary napkin package comprising a multi-layer resin film having a releasable layer in a portion abutting the pressure-sensitive adhesive layer of the sanitary napkin as a packaging material (Japanese Utility Model Publication No. 63-71025).

[0004]

[Problems to be solved by the device]

 However, the above-mentioned package has the following problems. In the above-mentioned package, since the wrapping material for wrapping the napkin is a single film, the peeling property becomes low with time, and the wrapping material stretches or tears when the napkin is taken out. If the thickness of the film is increased in order to suppress this, not only the cost will be increased, but also the film itself will be hard and the package cannot be easily opened. In the above-mentioned package, the film strength is low, and there is a problem that it stretches or tears when peeling the packaging material, and if the peeling degree of the film is increased to solve such a problem, The water solubility of the film is impaired and the toilet bowl becomes clogged when it is discarded. In the above package, since the adhesive layer can be provided only on a part of the napkin, the fixability of the napkin during use is poor. In the above-mentioned package, perforations are provided, but since air easily enters from the perforations and the package expands, it is difficult to carry or open. In the above packaging, since the content of the peelable substance such as silicone resin or the copolymer is used as the thermoplastic resin, the peeling substance bleeds out, and the peeling degree is unstable due to temperature and humidity. It is easy to become. Further, a region where the peeling force is partially reduced occurs on the peeling surface, and in some cases, the film does not peel off. Further, the bleed-out peelable substance sometimes migrates to the adhesive surface, and it is difficult to maintain the peeling stability with time in any environment.

Further, in any of the structures of the above-mentioned package, the adhesive layer can be provided only on a part of the napkin, so that the sanitary napkin having such a packaging structure has a property of being fixed to the shorts at the time of its use. There is a problem that is bad.

Therefore, the object of the present invention is that there is no need to remove and discard the release paper when using the sanitary napkin, so there is no problem associated with the release and disposal, and moreover, sufficient fixing to shorts. It is to provide a sanitary napkin packaging structure having strength.

[0007]

[Means for Solving the Problems]

 The present invention is a sanitary napkin packaging structure in which a sanitary napkin is folded so that its non-skin contact surface is exposed and individually wrapped by a packaging material. An adhesive layer is provided on each of the non-skin-contacting surfaces, and a release layer is provided on the inner surface of the packaging material at a portion corresponding to the adhesive layer. A sanitary napkin packaging structure is provided. By doing so, the above objective was achieved.

[0008]

[Action]

 In the sanitary napkin packaging structure of the present invention, the adhesive layer provided on the non-skin contact surface of the sanitary napkin is protected by the release layer provided on the inner surface of the packaging material. When using a sanitary napkin, you can use it by simply opening the packaging part and peeling off the packaging material from the sanitary napkin.The sanitary napkin can be reliably used against shorts during use. Fixed.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

FIG. 1 is a perspective view showing an embodiment of the sanitary napkin packaging structure of the present invention, FIG. 2 is a bottom view of the sanitary napkin in the packaging structure shown in FIG. 1, and FIG. FIG. 2 is a bottom view of the packaging material in the packaging structure shown in FIG. 1. Further, FIG. 4 is a schematic perspective view showing an intermediate state when the sanitary napkin is folded in three, and FIG. 5 is a schematic perspective view showing a packaging mode of the folded sanitary napkin with a packaging material. FIG. 6 is a schematic perspective view showing a main part of a continuous packaging mode of the sanitary napkin folded in three with the packaging material.

As shown in FIG. 1, the packaging structure 1 for a sanitary napkin according to the present embodiment folds a sanitary napkin so that its non-skin contact surface is exposed (outside), and is wrapped with a wrapping material. It is individually packaged, and more specifically, two bent portions 17 that divide the sanitary napkin 10 into approximately three equal parts in the longitudinal direction of the sanitary napkin 10 into a front portion 13, a central portion 14 and a rear portion 15. In the order of the rear part 15 and the front part 13, the central part 14 is folded into three on the skin contact surface 11 side and individually wrapped by the wrapping material 20. In the sanitary napkin 10 packaged by the packaging structure of the present invention, the skin contact surface 11 is made of a liquid permeable sheet material, and the non-skin contact surface 12 is made of a liquid impermeable sheet material. It is a normal sanitary napkin that is formed separately and has a liquid-retaining absorber between the skin contact surface 11 and the non-skin contact surface 12.

As shown in FIG. 2, adhesive layers 16 are provided on the front portion 13 and the central portion 14 of the sanitary napkin 10, respectively, and as shown in FIG. A peeling layer 21 is provided on a portion of the inner surface corresponding to the adhesive layer 16.

Further, each side edge portion 22 of the packaging material 20 is joined by heat sealing, and a perforation 24 for easily printing the opening of the packaging material is formed on the central surface portion along the edge portion 23. Is provided.

The material of the packaging material 20 may be polypropylene having a thickness of 5 to 50 μm, low density polyethylene, ethylene-propylene copolymer, a mixture of polyethylene and polypropylene, a film or nonwoven fabric such as polyvinyl alcohol, paper, or the like. These composite materials etc. are mentioned.

Here, the front portion 13 is a portion located in the front direction of the user when the sanitary napkin is used. The release layer 21 may be provided at least at the corresponding portion of the adhesive layer 16, and may be provided at a portion other than the corresponding portion.

Hereinafter, the characteristic part of the packaging structure 1 for the sanitary napkin of this embodiment will be described in more detail. As shown in FIG. 2, the adhesive layers 16 are provided on the non-skin-contacting surfaces 11 of the front part 13 and the central part 14 at two positions with predetermined intervals. Further, as shown in FIG. 3, the release layer 21 is a side edge portion for heat-sealing and fixing the package at the corresponding portion of the adhesive layer 16 on the inner surface of the packaging material 20. 22 and the edge portions 23, 23 'are formed in a rectangular shape.

Then, as shown in FIG. 1, in the packaging structure 1 for a sanitary napkin, the adhesive layer 16 is adhered to the release layer 21, whereby the adhesive layer 16 is protected. There is.

The adhesive layer 16 may be formed by applying an adhesive on the non-skin contact surface 11, or by applying it to the peeling-treated packaging material 20 and then transferring it to the non-skin contact surface 11. Formed. As the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer, for example, one having a styrene-based block polymer, a tackifier and a softening agent as main components and having a two-phase block structure of a styrene phase and a rubber phase is used. To be Examples of the styrene block polymer include styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS). , Styrene-ethylene-propylene-styrene copolymer (SEPS) and the like. These styrenic block polymers are block copolymers having a styrene portion having a molecular weight of preferably 7,000 to 20,000 and a rubber portion having a molecular weight of preferably 35,000 to 70,000. Examples of the tackifier include C ₅ petroleum resins having a softening point of 80 ° C. or higher and a molecular weight of 400 to 2,000, C ₉ petroleum resins, C ₅ / C ₉ petroleum resins, α-pinene, Examples thereof include polyterpene resins which are β-pinene or dipentene copolymers, rosin-based resins, and hydrogenated products thereof. Examples of the softening agent include process oils having a softening point of 10 ° C. or lower and an average molecular weight of 200 to 700, various plasticizers, polybutene, and liquid resins. As the above-mentioned pressure-sensitive adhesive, those having the following composition are particularly preferable. Styrene-based block polymer 100 parts by weight, tackifier resin 150 to 200 parts by weight, softening agent 30 to 100 parts by weight

The release layer 21 is formed by applying a release treatment agent to the inner surface of the packaging material 20, or by attaching a release tape. The release treatment agent or the release material component of the release tape is preferably a silicone resin type, a fluorine resin type, an octadecyl isocyanate type or the like. In particular, it is preferable to apply a silicone resin-based material as the above-mentioned release agent component and heat dry it, or spray it with a spray to form a thin film. In addition, a polyolefin or polyester film is used as a release tape, which is joined to the packaging material by heat or ultrasonic waves, has suitable rigidity, is easy to open, and has excellent heat resistance. This is advantageous.

In the present embodiment, an example in which the adhesive layer is provided at each of the front portion and the rear portion at two locations has been described, but the present invention is not limited to this, and for example, The number and shape of the adhesive layers to be installed are not particularly limited, and may be one place or three or more places. Further, the release layer is not limited to the above-mentioned embodiment, and can be provided only in the portion corresponding to the adhesive layer, for example.

When the sanitary napkin is used, the perforation 24 shown in FIG. 1 is pulled to open the packaging material 20, and the peeling layer 21 of the packaging material 20 is peeled from the adhesive layer 16 of the sanitary napkin 10. By doing so, it can be used immediately.

Next, a method for forming the sanitary napkin packaging structure 1 of the present embodiment will be described. First, in the sanitary napkin 10 shown in FIG. 2, the rear part 15 and the front part 13 are arranged in this order in the central part 14 so that the front part 13 is on the outer side as shown in FIG. Fold it in three on the skin contact portion 11 side. Next, as shown in FIG. 4, the sanitary napkin 10 folded in three is placed on the packaging material, and the respective edge portions 23 and 23 ′ are moved so that the edge portion 23 is on the arrow A. The sanitary napkin 10 is packaged by bending it in the direction, and then the side edge portions 22 are heat-sealed to form the sanitary napkin packaging structure 1. Incidentally, industrially, as shown in FIG. 6, usually, a sanitary napkin 10 folded in three is continuously provided on each release layer 21 of a continuous sheet of the packaging material 20 provided with the release layer 21 at predetermined intervals. And then wrap the sanitary napkin from both sides with the wrapping material 20 continuously, and heat-seal at the same time as cutting at the cutting line 25 to continuously wrap the sanitary napkin packaging structure of the present invention. Form .

[0023]

[Effect of device]

 According to the present invention, it is possible to save the trouble of peeling off the release paper when using the sanitary napkin, and since it is not necessary to discard the release paper, there is no need to dispose of the release paper in the toilet bowl, and also when using the sanitary napkin. Provided is a sanitary napkin packaging structure in which the sanitary napkin has a sufficient fixing force for shorts.

[Submission date] December 3, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

The adhesive layer 16 may be formed by applying an adhesive on the non-skin contact surface 11, or by applying it to the peeling-treated packaging material 20 and then transferring it to the non-skin contact surface 11. Formed. As the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer, for example, one having a styrene-based block polymer, a tackifier and a softening agent as main components and having a two-phase block structure of a styrene phase and a rubber phase is used. To be Examples of the styrene block polymer include styrene-ethylene-butylene-styrene block copolymer (SEBS), styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS). , Styrene-ethylene-propylene-styrene copolymer (SEPS) and the like. These styrenic block Kupo Rimmer, the molecular weight of the styrene moiety, preferably from 7000 to 20,000, the molecular weight of the rubber portion, block copolymer preferably 350 00-70000. Examples of the tackifier include C ₅ petroleum resins having a softening point of 80 ° C. or higher and a molecular weight of 400 to 2,000, C ₉ petroleum resins, C ₅ / C ₉ petroleum resins, α-pinene, Examples thereof include polyterpene resins which are β-pinene or dipentene copolymers, rosin-based resins, and hydrogenated products thereof. Examples of the softening agent include process oils having a softening point of 10 ° C. or lower and an average molecular weight of 200 to 700, various plasticizers, polybutene, and liquid resins. As the above-mentioned pressure-sensitive adhesive, those having the following composition A or B are particularly preferable. A: 100 parts by weight of styrenic block polymer, 150 to 200 parts by weight of tackifier resin, 30 to 100 parts by weight of softener B: 100 parts by weight of styrenic block polymer, 200 to 500 parts by weight of tackifier resin , 100 of softening agent ~ 400 parts by weight

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a packaging structure for a sanitary napkin according to the present invention.

FIG. 2 is a bottom view of the sanitary napkin in the packaging structure shown in FIG.

FIG. 3 is a bottom view of the packaging material in the packaging structure shown in FIG.

FIG. 4 is a schematic perspective view showing a form in the middle of folding a sanitary napkin into three pieces.

FIG. 5 is a schematic perspective view showing a main part of a packaging mode of a three-fold folded sanitary napkin with a packaging material.

FIG. 6 is a schematic perspective view showing a main part of a packaging mode of a continuous three-fold sanitary napkin with a packaging material.

[Explanation 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 Rear part 16 Adhesive layer 17 Bent part 20 Packaging material 21 Release layer 22 Side edge part 23, 23 'edge part 24 cutting line

Claims (4)

[Scope of utility model registration request] 1. A packaging structure for a sanitary napkin, which is obtained by folding a sanitary napkin so that its non-skin contact surface is exposed and individually wrapping it with a packaging material, wherein the folded sanitary napkin is exposed. A sanitary napkin packaging structure, wherein an adhesive layer is provided on each of the non-skin contact surfaces, and a release layer is provided on a corresponding portion of the adhesive layer on the inner surface of the packaging material. 2. The non-skin contacting surface of the front part and the central part is exposed at two bent parts which divide the sanitary napkin into three parts, the front part, the center part and the rear part of the sanitary napkin. The packaging structure for a sanitary napkin according to claim 1, wherein the packaging structure is as described above. 3. The non-skin contact surface provided with the adhesive layer,
The packaging structure for a sanitary napkin according to claim 1, having an adhesive region and a non-adhesive region. 4. The packaging structure for a sanitary napkin according to claim 1, wherein the release layer is formed by joining a release tape to a packaging material.