JP6731712B2 - Wet tissue packaging lid materials, wet tissue packaging materials, and wet tissue packaging products - Google Patents

Description

The present invention relates to a lid material for a wet tissue packaging material, a wet tissue packaging material, and a wet tissue packaging product.

Wet tissues are generally sold in a container or packaging material in order to prevent evaporation of the impregnated liquid. In recent years, since it is easy to carry, many products are sold in a state of being housed in a film packaging material. Generally, an adhesive sheet which can be repeatedly peeled off is attached as a lid to the take-out portion of the tissue of the film packaging material of the wet tissue.
As an adhesive sheet used as such a lid material, for example, in Patent Document 1, the surface substrate is a plastic film or synthetic paper, the adhesive layer is butyl acrylate 80-98 wt%, carboxyl group-containing monomer 2 0.1 to 5 parts by weight of a cross-linking agent and 0.1 to 5 parts by weight of a plasticizer in 100 parts by weight of an acrylate copolymer obtained by copolymerizing 10% by weight and 0 to 18% by weight of other copolymerizable monomers Disclosed is a pressure-sensitive adhesive sheet for wet tissues, which is formed from a pressure-sensitive adhesive containing parts.

JP, 11-71557, A

However, an adhesive sheet used as a lid material for a packaging material for a wet tissue may be deformed through sticking and peeling. In particular, when the pressure-sensitive adhesive sheet is peeled off from the packaging material of the wet tissue, there are problems that the pressure-sensitive adhesive sheet has fine wrinkles or curls. If the adhesive sheet used as the lid material has wrinkles or curls, the adhesiveness between the adhesive sheet and the packaging material as the adherend is impaired, and the components of the wet tissue easily leak out of the packaging material. Further, if the pressure-sensitive adhesive sheet has wrinkles, wrinkles may be a starting point during peeling, which may cause an unpleasant peeling sound.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a lid material for a packaging material for a wet tissue, which is resistant to deformation. Moreover, it aims at providing the packaging material of a wet tissue and the packaging product of a wet tissue provided with the material for the lid of the packaging material of the said wet tissue.

The present invention is as follows.
(1) A base film, a first pressure-sensitive adhesive layer laminated on one surface of the base film, and a side of the base film opposite to a side on which the first pressure-sensitive adhesive layer is laminated. A deformation suppressing layer laminated on the surface, wherein the substrate film is at least one selected from the group consisting of a foamed resin film, a synthetic paper having fine pores, and a resin film having fine pores. And the deformation suppressing layer is at least one resin film layer selected from the group consisting of polyethylene terephthalate and polyvinyl chloride .
( 2 ) A wet tissue packaging material in which an opening is formed, and a lid that covers the opening, and at least a part of the lid is the packaging material for the wet tissue according to (1) . Wet tissue packaging made from lid material.
( 3 ) A wet tissue packaging product comprising the wet tissue packaging material according to ( 2 ) above and a wet tissue packaged with the wet tissue packaging material.

According to the present invention, it is possible to provide a lid material for a packaging material for a wet tissue, which is unlikely to be deformed. Further, it is possible to provide a wet tissue packaging material and a wet tissue packaging product including the lid material for the wet tissue packaging material.

It is sectional drawing of the material for lids of the packaging material of a wet tissue which concerns on one Embodiment of this invention. It is sectional drawing of the material for lids of the packaging material of a wet tissue which concerns on one Embodiment of this invention. It is sectional drawing of the packaging material of the wet tissue which concerns on one Embodiment of this invention. It is a perspective view of the packaging product of the wet tissue concerning one embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described.
[Cover material for wet tissue packaging]
<First Embodiment>
As shown in FIG. 1, a lid material (hereinafter sometimes abbreviated as “lid material”) 1 of a packaging material for a wet tissue according to the present embodiment includes a base film 10 and one surface of the base film 10. The first pressure-sensitive adhesive layer 20 laminated on the base film 10, and the deformation suppressing layer 30 laminated on the surface of the base film 10 opposite to the side on which the first pressure-sensitive adhesive layer 20 is laminated.
The lid material 1 includes a release paper 40 laminated on the surface of the first adhesive layer 20 opposite to the surface on which the base film 10 is laminated. However, the release paper 40 is removed when the lid material 1 is used, and is not an essential component of the lid material 1.

(Base film)
The base film may be transparent or opaque. The base material film 10 of the lid material 1 according to the present embodiment includes a polyester film such as polyethylene terephthalate (PET), a polyolefin film such as polyethylene (PE) and polypropylene (PP), a polyvinyl chloride (PVC) film, a polycarbonate film. , (Meth)acrylic resin film, polystyrene film, cellulose acetate film and other resin films; composite sheet of resin film such as tarpaulin and woven or non-woven fabric; synthetic paper; fine paper, coated paper, glassine paper, laminated paper, etc. Examples include paper. In addition, in this specification, a (meth)acrylic resin means an acrylic resin and a methacrylic resin, and is the same below.

The thickness of the substrate film can be appropriately set, and for example, is preferably 15 to 300 μm, more preferably 30 to 200 μm, and further preferably 40 to 100 μm.

(First adhesive layer)
The first pressure-sensitive adhesive layer 20 of the lid material 1 according to the present embodiment is a layer attached to the packaging material of the wet tissue as the adherend. The first pressure-sensitive adhesive layer 20 is not particularly limited as long as it can be attached to and removed from the wet tissue packaging material, and a wide variety of existing ones may be used. Examples of the pressure-sensitive adhesive used in the first pressure-sensitive adhesive layer 20 include acrylic-based, rubber-based, and silicone-based pressure-sensitive adhesives.

The thickness of the first pressure-sensitive adhesive layer 20 can be appropriately set, and is, for example, preferably 10 to 100 μm, more preferably 10 to 50 μm, and further preferably 10 to 30 μm.

(Deformation suppression layer)
The deformation suppressing layer 30 of the lid member 1 according to the present embodiment is laminated on the surface of the base film 10 opposite to the side on which the first adhesive layer 20 is laminated so as to be in contact with the base film 10. Has been done.
When the lid material is peeled off from the packaging material of the wet tissue, the base film 10 may be deformed such as fine wrinkles or curls, but the deformation suppressing layer 30 is formed on the base film surface. The deformation suppressing layer 30 reinforces the base film by suppressing the deformation of the base film 10 by being laminated on the base film.

Examples of the deformation suppressing layer 30 include polyester films such as polyethylene terephthalate (PET), polyolefin films such as polyethylene (PE) and polypropylene (PP), polyvinyl chloride (PVC) films, (meth)acrylic resin films, polystyrene films. , A resin film such as a cellulose acetate film, and a resin film of a thermoplastic resin is preferable. Among the above, the deformation suppressing layer 30 is preferably at least one resin film layer selected from the group consisting of polyethylene terephthalate, polyvinyl chloride, polypropylene, and polyethylene. The deformation suppressing layer 30 may be the same type of film as the base film 10, but is preferably a different type of film.

The thickness of the deformation suppressing layer 30 is preferably 15 to 300 μm, more preferably 20 to 200 μm, and further preferably 30 to 100 μm. When the thickness of the deformation suppressing layer is within the above range, it is possible to provide a lid material that is less likely to be deformed. The deformation suppressing layer 30 may be a single layer or a multilayer.

(Release paper)
The release paper 40 used in the lid material 1 according to the present embodiment is not particularly limited, and a known release paper can be used.

As the release paper 40, it is possible to use, for example, a polyethylene laminated paper obtained by laminating a polyethylene film on a paper base material such as glassine paper or high-quality paper coated with a release agent such as silicone.

The thickness of the release paper 40 is usually about 10 to 250 μm, preferably about 20 to 200 μm. The thickness of the release agent in the release paper 40 is usually 0.05 to 5 μm, preferably 0.1 to 3 μm.

(Thickness of lid material)
The thickness of the lid material 1 is preferably 80 to 1500 μm, and more preferably 100 to 500 μm.

<Second Embodiment>
As shown in FIG. 2, the lid material 2 according to the present embodiment is the lid material 1 of the first embodiment further provided with a second adhesive layer 50. Moreover, it replaces with the base material film 10 in the material 1 for lids, and is equipped with the base material film 11 which has the micropore 11a. Descriptions of portions common to the lid member 1 of the first embodiment will be omitted.

The deformation suppressing layer 30 is laminated on the base film 11 via the second pressure-sensitive adhesive layer 50. As the second adhesive layer 50, the same material as the first adhesive layer 20 can be used.

The inventors have noticed that the lid material provided with the base film having fine pores is excellent in peeling feeling from the packaging material of the wet tissue, but is more likely to be deformed when peeled than other films. did. Therefore, by adopting a configuration in which the deformation suppressing layer 30 is laminated on the surface of the base material film 11, the improvement of the peeling feeling from the packaging material and the prevention of deformation are compatible, and the usability and the adhesiveness at the time of re-adhesion are excellent. It has been found that a lid material can be provided.

The base film 11 having the fine pores 11a is preferably at least one selected from the group consisting of a foamed resin film, a synthetic paper having fine pores, and a resin film having fine pores.

The foamed resin film is a porous resin film, and examples thereof include those obtained by extruding and foaming a resin, and those obtained by molding a resin composition in which gas is dispersed. Examples of the foamed resin film include a foamed polyester film, a foamed polyethylene terephthalate film, a foamed polypropylene film, a foamed polyethylene film, and a foamed polystyrene film.

The resin film having fine pores is a porous resin film and is manufactured by using a synthetic resin as a main raw material. As the resin in the resin film having fine pores, the same resin as the above foamed resin film can be exemplified.

The synthetic paper having fine pores is a film that is porous and has properties similar to those of paper manufactured using a synthetic resin as a main raw material. Examples of the synthetic resin as a main raw material of the synthetic paper include polypropylene, polyester, polystyrene and the like, and examples of the polyester include polyethylene terephthalate. Here, the main raw material means a raw material of 50% by mass or more based on the total raw material of the synthetic paper. Examples of the fine pores of the synthetic paper include fine pores generated in the stretching step. For example, when a synthetic resin containing a filler is stretched, fine cavities are formed around the filler to give a white paper-like texture. Specific examples of synthetic paper having fine pores include Yupo (registered trademark) (Yupo Corporation), Crisper (registered trademark) (Toyobo Co., Ltd.), NCOAT (registered trademark) (Nakamoto Pax Co., Ltd.) and the like. Those which can be exemplified and have properties equivalent to these are included in the synthetic paper having fine pores.

As the combination of the deformation suppressing layer 30 and the base film 11, for example, the base film 11 is a foam resin film and the deformation suppressing layer 30 is a polypropylene film, and the base film 11 is a foam resin film and the deformation suppressing layer 30. Is a polyethylene terephthalate film, the substrate film 11 is a foamed resin film and the deformation suppressing layer 30 is a polyethylene film, the substrate film 11 is a foamed resin film and the deformation suppressing layer 30 is a polyvinyl chloride film, etc. Are listed.
Similarly, as the combination of the deformation suppressing layer 30 and the base film 11, for example, the base film 11 is synthetic paper and the deformation suppressing layer 30 is a polypropylene film, and the base film 11 is synthetic paper and the deformation suppressing layer 30. Is a polyethylene terephthalate film, the base film 11 is a synthetic paper and the deformation suppressing layer 30 is a polyethylene film, the base film 11 is a synthetic paper and the deformation suppressing layer 30 is a polyvinyl chloride film, and the like. To be

Although each embodiment of the lid material has been described above, the lid material of the present invention is not limited to the lid material described above. For example, the lid material may be one further provided with another layer, for example, printing may be performed on a base film, and a printing layer may be formed between the base film and the deformation suppressing layer. Good.

[Method of manufacturing lid material for wet tissue packaging material]
As an example of a method for manufacturing the lid material, first, a method for manufacturing the lid material 1 will be described as an example. For example, the lid material 1 according to the present embodiment has the first pressure-sensitive adhesive layer 20 formed on one surface of the base film 10, and the surface opposite to the side on which the first pressure-sensitive adhesive layer 20 is formed. It can be manufactured by forming the deformation suppressing layer 30 on.

For example, first, a pressure-sensitive adhesive forming the first pressure-sensitive adhesive layer 20 and, if desired, a coating agent further containing a solvent are prepared, and a roll coater, a knife coater, a roll knife coater, an air knife coater, a die coater, a bar coater, The first pressure-sensitive adhesive layer 20 is formed on the release paper 40 by coating the release-treated surface of the release paper 40 with a coating machine such as a gravure coater or a curtain coater and drying it. Then, the base film 10 is pressure-bonded and laminated on the first pressure-sensitive adhesive layer 20 to obtain a laminate including the base film 10, the first pressure-sensitive adhesive layer 20, and the release paper 40.
Next, the deformation suppressing layer 30 is formed on the surface of the base film 10 opposite to the side on which the first adhesive layer is formed. The deformation suppressing layer 30 may be laminated by stacking a resin film obtained by molding a resin composition as a raw material and a base material and thermally laminating them. In this way, the lid member 1 obtained by sequentially laminating the deformation suppressing layer 30, the base film 10, the first adhesive layer 20, and the release paper 40 is obtained.

As another example, a case of manufacturing the lid material 2 will be described. First, a laminate including the base film 11, the first pressure-sensitive adhesive layer 20, and the release paper 40 is obtained in the same manner as the method for manufacturing the lid material 1 described above.
Next, the deformation suppressing layer 30 is formed on the surface of the base film 11 with the second pressure-sensitive adhesive layer 50 interposed therebetween. Similar to the first pressure-sensitive adhesive layer 20 described above, the second pressure-sensitive adhesive layer 50 is formed on the release paper in advance, the deformation suppressing layer 30 is attached to the formed second pressure-sensitive adhesive layer 50, and then the release paper is peeled off. By doing so, a laminated body including the deformation suppressing layer 30 and the second pressure-sensitive adhesive layer 50 is obtained. Then, the exposed surface of the second pressure-sensitive adhesive layer 50 is pressure-bonded and laminated on the surface of the base film 11 opposite to the side on which the first pressure-sensitive adhesive layer 20 is formed to suppress deformation of the base film 11. Laminate the layers 30 together.
In this way, the lid member 2 is obtained in which the deformation suppressing layer 30, the second pressure-sensitive adhesive layer 50, the base film 11, the first pressure-sensitive adhesive layer 20, and the release paper 40 are laminated in this order.

[Wet tissue packaging material]
As shown in FIG. 3, the packaging material 100 for a wet tissue according to the present embodiment includes a packaging material for a wet tissue (hereinafter, may be abbreviated as “packaging material”) 70 in which an opening portion 70a is formed, and an opening portion 70a. And a lid 80 for covering the lid 80, and at least a part of the lid 80 is formed from the lid material 1 of the packaging material for the wet tissue.

The lid material 1 has the same configuration as that of the lid material described in the first embodiment, and thus the description thereof is omitted. As shown in FIG. 3, the lid material 1 is attached to the packaging material 70 by the first adhesive layer 20 of the lid material 1. The packaging material 70 is formed with a cut at the opening starting point 70b. When the user of the wet tissue peels the lid material 1 from the packaging material 70, the portion of the packaging material 70 surrounded by the opening starting point 70b is stuck to the first adhesive layer side and the lid material 1 And the opening 70a is formed in the packaging material 70.

The packaging material 70 may be a film packaging material. The material of the film packaging material is not particularly limited as long as it can be used as a packaging material for wet tissues. Although the case where the packaging material 70 is a single layer is illustrated in FIG. 3, the film of the film packaging material may be a single layer or a multilayer. Examples of the film packaging material include those in which a synthetic resin film is laminated on an aluminum foil, those in which aluminum is deposited on the synthetic resin film, and the like. The film packaging material has a thickness of about 80 to 1500 μm.
In the present embodiment, the lid material 1 described in the first embodiment has been described as an example of the lid material, but the lid material used for the packaging material of the wet tissue is the lid material described in the second embodiment. It may be 2.

(Lid)
As illustrated in FIG. 3, the lid material 1 is suitable in consideration of the shape of the opening 70a and the packaging material 100 of the wet tissue so that the opening 70a formed in the packaging material 70 can be covered. It may be formed into a shape and used as the lid 80.
Although FIG. 4 described later is a perspective view showing an example of a packaged product of wet tissues, a perspective view of the lid body 80 shown in FIG. 3 is shown in FIG. 4. Here, the shape of the lid 80 is a substantially rectangular shape, but the lid is not limited to such a shape, and may be a circular shape, an elliptical shape, or the like. Further, the lid 80 is formed with a knob 80a, which is a portion where the first adhesive layer 20 is not formed, on the surface on the side of the packaging material 70, and the lid 80 is easily gripped by pulling the knob 80a. The packaging material 70 can be peeled off.

[Method of manufacturing packaging material for wet tissue]
As a method for manufacturing the packaging material for the wet tissue, a method for manufacturing the packaging material 100 for the wet tissue will be described below as an example. The packaging material 100 can be manufactured by a known method. For example, the lid material 1 and the packaging material 70 are manufactured, the release paper 40 is peeled from the lid material 1, the exposed first adhesive layer 20 is overlapped on the packaging material 70, and the lid material 1 (deformation suppressing layer 30 It can be manufactured by press-bonding a laminate of the base film 10 and the first pressure-sensitive adhesive layer 20) and the packaging material 70.

[Wet tissue packaging products]
As shown in FIG. 4, a wet tissue packaging product 200 according to the present embodiment is a wet tissue packaging material 100 including a packaging material 70 and a lid 80, and a wet tissue 90 wrapped by the wet tissue packaging material 100. And

Since the packaging material 100 has the same configuration as that described in the embodiment of the lid material, the description thereof will be omitted.
The wet tissue 90 is accommodated in the bag-shaped packaging material 100. The wet tissue is a paper or a non-woven fabric impregnated with a liquid, and its type and application are not particularly limited. The liquid is, for example, an aqueous solution containing water, alcohol, an antibacterial agent, or the like.

The wet tissue packaging product according to the present embodiment may be used for various purposes such as sweat and dirt, for wiping the body such as cosmetics, around water, for cleaning floors, window glass, furniture, equipment, etc. You can

[Method for manufacturing wet tissue packaging products]
As a method of manufacturing a wet tissue packaging material, a method of manufacturing a wet tissue packaging product 200 will be described below as an example. The packaged product 200 can be manufactured by a known method. For example, it can be manufactured by respectively manufacturing the packaging material 100 of the wet tissue and the wet tissue 90, and wrapping the wet tissue 90 in the bag-shaped packaging material 100 and sealing it.

The embodiments described above are described to facilitate the understanding of the present invention, and are not described to limit the present invention. Therefore, each element disclosed in the above-described embodiment is intended to include all design changes and equivalents within the technical scope of the present invention.

Hereinafter, the present invention will be described more specifically with reference to Examples and the like, but the scope of the present invention is not limited to these Examples and the like. Note that FIG. 2 is referred to for members having reference numerals.

[Example 1] (Reference example 1)
(Preparation of adhesive solution A)
36.3 parts by mass of n-butyl acrylate as a monomer, 60 parts by mass of 2-ethylhexyl acrylate, 0.3 parts by mass of 2-hydroxyethyl acrylate, 3.2 parts by mass of acrylic acid, and azobisisobutyro as a polymerization initiator. 0.2 parts by mass of nitrile and 150 parts by mass of ethyl acetate as a solvent were subjected to solution polymerization at 80° C. for 8 hours to obtain an acrylic acid ester copolymer solution having a mass average molecular weight of about 600,000. An adhesive solution A was prepared by mixing 100 parts by mass of this solution and 1 part by mass of an isocyanate cross-linking agent (Coronate L, manufactured by Tosoh Corporation).
(Preparation of adhesive solution B)
N-Butyl acrylate 82.8 parts by mass, vinyl acetate 15 parts by mass, 2-hydroxyethyl acrylate 0.2 parts by mass, acrylic acid 1.8 parts by mass, azobisisobutyronitrile 0 as a polymerization initiator 0.2 parts by mass and 150 parts by mass of ethyl acetate as a solvent were subjected to solution polymerization at 80° C. for 8 hours to obtain an acrylic acid ester copolymer solution having a mass average molecular weight of about 600,000. An adhesive solution B was prepared by mixing 100 parts by mass of this solution with 1 part by mass of an isocyanate crosslinking agent (Coronate L, manufactured by Tosoh Corporation).
(Preparation of laminate A)
The pressure-sensitive adhesive solution A was applied to the release paper 40 and dried at 100° C. for 1 minute to form the first pressure-sensitive adhesive layer 20 having a thickness of 25 μm. Further, a synthetic paper having fine pores (SGP80 manufactured by YUPO Corporation) is bonded as the base film 11 to the first pressure-sensitive adhesive layer 20, whereby the base film 11, the first pressure-sensitive adhesive layer 20 and the release paper 40. A laminated body A was obtained. (Production of laminated body B)
The second adhesive layer 50 having a thickness of 20 μm was formed by applying the adhesive solution B on the release paper and drying it. Further, a polypropylene film having a thickness of 20 μm (Trefan 2578, manufactured by Toray Industries, Inc.) is bonded to the second pressure-sensitive adhesive layer 50 as the deformation suppressing layer 30, and the release paper is peeled off, whereby the deformation suppressing layer 30 and the second adhesive layer are adhered. A layered product B including the agent layer 50 was obtained.
(Production of lid material 2)
By laminating the second adhesive layer 50 of the laminate B on the base film 11 of the laminate A, the deformation suppressing layer 30, the second adhesive layer 50, the base film 11, the first adhesive layer 20, and The lid member 2 made of the release paper 40 was obtained.

[Example 2] (Reference example 2)
Example 2 was repeated in the same manner as in Example 1 except that a polypropylene (PP) film having a thickness of 40 μm (Trephan 2578 manufactured by Toray Industries, Inc.) was used instead of the polypropylene (PP) film having a thickness of 20 μm. A lid material was obtained.

[Example 3]
A lid material of Example 3 was used in the same manner as in Example 1 except that a 25 μm thick polyethylene terephthalate (PET) film (Lumirror T-60, manufactured by Toray Industries, Inc.) was used instead of the polypropylene (PP) film. Got

Example 4 (Reference Example 3)
A lid material of Example 4 was obtained in the same manner as in Example 1 except that a transparent polyethylene (PE) film having a thickness of 50 μm (manufactured by J-Film Corporation) was used instead of the polypropylene (PP) film. ..

[Example 5]
A lid material of Example 5 was obtained in the same manner as in Example 1 except that a polyvinyl chloride (PVC) film (manufactured by Nippon Carbide Industry Co., Ltd., Hies Paint 5085) was used instead of the polypropylene film (PP). It was

[Comparative Example 1]
A lid material of Comparative Example 1 was obtained in the same manner as in Example 1 except that the laminate of the deformation suppressing layer 30 and the second pressure-sensitive adhesive layer 50 was not formed on YUPO (base film).

Example 6 (Reference Example 4)
A lid material of Example 6 was obtained in the same manner as in Example 1 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

Example 7 (Reference Example 5)
A lid material of Example 7 was obtained in the same manner as in Example 2 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

[Example 8]
A lid material of Example 8 was obtained in the same manner as in Example 3 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

[Example 9] (Reference example 6)
A lid material of Example 9 was obtained in the same manner as in Example 4 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

[Example 10]
A lid material of Example 10 was obtained in the same manner as in Example 5 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

[Comparative Example 2]
A lid material of Comparative Example 2 was obtained in the same manner as Comparative Example 1 except that Crisper (Toyobo Co., Ltd., K2411) was used instead of YUPO.

(Confirmation of deformation of lid material)
The lid materials produced in the examples and comparative examples were attached to a packaging material, accelerated under moist heat conditions, and then checked for occurrence of wrinkles and curls in the lid material peeled from the packaging material. As a packaging material, a polyethylene terephthalate film (Lumirror T-60, Toray Industries, Inc.) having a thickness of 50 μm was used. A test piece of 5 cm x 8 cm was cut out from the created lid material, attached to an adherend, promoted in an environment of 60°C and 95% RH, and allowed to stand for 1 day in an environment of 23°C and 50% RH, and then a lid. The lid material was peeled from the packaging material by pinching one short side of the edge of the material. Then, it was confirmed whether wrinkles and curls were generated in the lid material.
When wrinkles were observed in the lid material after peeling, wrinkles after peeling were evaluated as “present”, and when no wrinkles were observed, wrinkles after peeling were evaluated as “absent”. The curl was evaluated on a scale of 5 from "1" to "5" based on the size of the curl. The larger the value, the smaller the curl size and the smaller the degree of deformation.

The results are shown in Table 1. In the lid materials of Comparative Examples 1 and 2, wrinkles were observed in the lid material after peeling, whereas in the lid materials of Examples 1 to 10, no wrinkle was observed in the lid material after peeling. It was
The wrinkles generated in Comparative Example 1 and Comparative Example 2 occurred in the base film, and were formed on the entire base film in the portion where the wrinkles were peeled off. This wrinkle was very fine, and the width of the unevenness for one wrinkle was about 300 μm.
The degree of curling after peeling observed in the lid materials of Examples 1 to 10 was smaller than that of the lid materials of Comparative Examples 1 and 2.
Thus, the lid materials of Examples 1 to 10 were less likely to be deformed than the lid materials of Comparative Examples 1 and 2.

1, 2... Lid material for packaging material of wet tissue, 10, 11... Base film, 11a... Micropores, 20... First adhesive layer, 30... Deformation suppressing layer, 40... Release paper, 50... Second Adhesive layer, 70... Packaging material, 70a... Opening portion, 70b... Opening origin, 80... Lid, 80a... Knob, 90... Wet tissue, 100... Wet tissue packaging material, 200... Wet tissue packaging product

Claims (3)

A base film,
A first pressure-sensitive adhesive layer laminated on one surface of the base film,
A deformation suppressing layer laminated on the surface of the base film opposite to the side on which the first pressure-sensitive adhesive layer is laminated,
The substrate film is at least one selected from the group consisting of a foamed resin film, a synthetic paper having fine pores, and a resin film having fine pores ,
A material for a lid of a packaging material for a wet tissue, wherein the deformation suppressing layer is at least one resin film layer selected from the group consisting of polyethylene terephthalate and polyvinyl chloride . A wet tissue packaging material in which an opening is formed,
A lid that covers the opening,
The wherein at least a portion of the lid is formed from the lid timber of packaging wet tissues according to claim 1, packaging wet tissues. A packaging material for the wet tissue according to claim 2 ,
A wet tissue wrapped with the packaging material for the wet tissue,
Wet tissue packaging products that include:

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