JP7190949B2 - fake adhesive label - Google Patents

Description

The present invention relates to pseudo-adhesive labels.

A pseudo-adhesive label is a label that can be easily peeled off from a substrate starting from the pseudo-adhered interface after being attached to an adherend. Pseudo-adhesive labels have been put to practical use, for example, as delivery slips or information-hiding labels.

For example, Patent Literature 1 describes display papers such as tags and labels composed of various printed paper substrates, transparent synthetic resin films, pressure-sensitive adhesives, and release papers.

In the display paper described in Patent Literature 1, there is a possibility that the paper base material will be torn when the paper base material on the surface is peeled off. That is, there is a risk that the layers of the paper base material will delaminate, and only the upper layer of the paper base material will mainly be partially peeled off, leaving a region below the peeled upper layer on the thermoplastic resin layer.

Patent Document 2 describes a pseudo-adhesive label in which a paper substrate, a thermoplastic resin layer, and an adhesive layer are laminated in this order as a pseudo-adhesive label for solving the problem described in Patent Document 1. there is In the pseudo-adhesive label described in Patent Document 2, the paper substrate can be peeled off from the thermoplastic resin layer while the pressure-sensitive adhesive layer is attached to the adherend. Furthermore, in the pseudo-adhesive label, when the interlaminar strength of the base material is peeled off at a peeling speed of 0.3 m / min, the interlaminar strength in the longitudinal direction and the transverse direction of the paper base material is also 6.0 N/50 mm or more.

Japanese Patent Publication No. 55-15035 JP 2010-243919 A

Pseudo-adhesive labels in which a paper substrate, a thermoplastic resin layer, and an adhesive layer are laminated in this order (for example, the pseudo-adhesive label described in Patent Document 2) are often used for delivery slips. The pseudo-adhesive label is attached to the adherend (item to be delivered) at the time of shipment, and then undergoes storage and delivery processes. detachment at the interface. Therefore, in the pseudo-adhesive label, the paper substrate and the thermoplastic resin layer do not separate at the interface during the delivery process, etc., and after the delivery is completed, the pseudo-adhesive strength is such that the paper substrate can be easily peeled off from the thermoplastic resin layer. is required. Furthermore, the pseudo-adhesive label is required to have adhesive strength to the extent that the pseudo-adhesive label does not peel off from the delivery item.
By the way, depending on the storage conditions until the pseudo-adhesive label is attached to the adherend, it may become difficult to separate the paper substrate from the pseudo-adhesive layer, and the paper substrate may tear. For example, after attaching a pseudo-adhesive label that has been stored for a long period of time or a pseudo-adhesive label that has been stored under high temperature and high humidity to an adherend, the paper substrate may be torn when the paper substrate is peeled off. be. Note that the base material positioned on the surface of the pseudo-adhesive label is not limited to the paper base material. Even if the substrate is made of another material, it may be difficult to separate the substrate from the pseudo-adhesive layer.

An object of the present invention is to bond the substrate and the pseudo-adhesive layer with an appropriate pseudo-adhesive strength, suppress unintended peeling of the substrate, and suppress tearing of the substrate regardless of the storage conditions of the pseudo-adhesive label. To provide a pseudo-adhesive label capable of

According to one aspect of the present invention, it has a substrate, an adhesive layer, and a pseudo-adhesive layer included between the substrate and the adhesive layer, and the adhesive layer is a tackifying resin and the pseudo adhesive layer contains a thermoplastic resin having a crystallinity of 22.5% or less, and the crystallinity is a value calculated based on the scattering intensity measured by a wide-angle X-ray diffraction method. wherein the pseudo-adhesive layer is pseudo-adhered to the substrate, and the pseudo-adhesive force of the pseudo-adhesive layer to the substrate is 250 mN/50 mm or more and 1500 mN/50 mm or less. be.

In the pseudo-adhesive label according to one aspect of the present invention, the pressure-sensitive adhesive layer contains a main polymer, and the content of the tackifying resin in the pressure-sensitive adhesive layer is 0.1 with respect to 100 parts by mass of the main polymer. It is preferably at least 200 parts by mass.

In the pseudo-adhesive label according to one aspect of the present invention, the thermoplastic resin having a degree of crystallinity of 22.5% or less is preferably a polyolefin resin.

In the pseudo-adhesive label according to one aspect of the present invention, the adhesive force of the pseudo-adhesive label according to JIS Z 0237:2009 is preferably 6.0 N/25 mm or more.

In the pseudo-adhesive label according to one aspect of the present invention, the adhesive strength of the pseudo-adhesive label when polyethylene is used as the adherend is preferably 5.0 N/25 mm or more.

In the pseudo-adhesive label according to one aspect of the present invention, the pseudo-adhesive layer preferably contains 80% by mass or more of the thermoplastic resin having a crystallinity of 22.5% or less.

In the pseudo-adhesive label according to one aspect of the present invention, the substrate is preferably a paper substrate.

Preferably, the pseudo-adhesive label according to one aspect of the present invention further includes a release sheet, and the pressure-sensitive adhesive layer is attached to the release sheet.

According to one aspect of the present invention, the substrate and the pseudo-adhesive label are adhered with an appropriate pseudo-adhesive force, unintended peeling of the substrate is suppressed, and regardless of the storage conditions of the pseudo-adhesive label, the substrate is attached. A pseudo-adhesive label that can suppress tearing can be provided.

1 is a schematic cross-sectional view of a pseudo-adhesive label according to one aspect of the present invention; FIG. 1 is a schematic cross-sectional view showing a state in which a pseudo adhesive label according to one aspect of the present invention is attached to an adherend; FIG. FIG. 4 is a schematic cross-sectional view for explaining a state in which a substrate is peeled off from the pseudo adhesive label according to one aspect of the present invention;

The present inventors found that when the pseudo-adhesive force between the paper substrate and the thermoplastic resin layer (pseudo-adhesive layer) of the pseudo-adhesive label exceeds 1500 N/50 mm, the paper substrate is peeled off from the thermoplastic resin layer. It was found that the paper substrate tends to tear easily.
In addition, since various materials may be used for the items to be delivered that are adhered to the pseudo-adhesive labels, even if the items to be delivered are made of difficult-to-adhere materials, it is necessary to ensure that the pseudo-adhesive labels do not come off easily. The pressure-sensitive adhesive layer of the adhesive label is required to have low adherend selectivity. Therefore, the pressure-sensitive adhesive layer is often composed of a pressure-sensitive adhesive containing a main polymer and a tackifying resin (sometimes referred to as a tackifier).
The present inventors have found that when the pressure-sensitive adhesive layer contains a tackifying resin, the pseudo-adhesion tends to increase over time. The inventors also found that the pseudo-adhesive strength tends to increase even when the pseudo-adhesive label is stored under high temperature and high humidity conditions.
Therefore, the present inventors found that after storing a pseudo-adhesive label comprising a pressure-sensitive adhesive layer containing a tackifying resin for a long period of time or under high temperature and high humidity conditions, the interface between the base material and the pseudo-adhesive layer was reddened. Infrared spectroscopy (IR) analysis confirmed that the tackifying resin in the pressure-sensitive adhesive layer migrated to the interface between the substrate and the pseudo-adhesive layer.
Based on these analysis results, the present inventors have found that heat contained in the pseudo-adhesive layer can be suppressed as a means of suppressing the tackifier resin in the adhesive layer from reaching the interface between the substrate and the pseudo-adhesive layer. We focused on the degree of crystallinity of the plastic resin. After studying the relationship between the degree of crystallinity and pseudo-adhesiveness of various thermoplastic resins, it was found that if the degree of crystallinity is less than a predetermined value, the above-mentioned increase in pseudo-adhesive strength due to the passage of time can be suppressed. .
The present invention was invented based on the findings as described above.
Hereinafter, the present invention will be described by taking an embodiment according to one aspect of the present invention as an example, but the present invention is not limited to the embodiment.

[Embodiment according to one aspect of the present invention]
(pseudo-adhesive label)
The pseudo-adhesive label according to this embodiment has a substrate, an adhesive layer, and a pseudo-adhesive layer included between the substrate and the adhesive layer. The pseudo-adhesive layer provides pseudo-adhesion to the substrate.

FIG. 1 shows a schematic cross-sectional view of a pseudo-adhesive label 1 according to this embodiment. In the pseudo-adhesive label 1 according to this embodiment, the substrate 10, the pseudo-adhesive layer 20, and the pressure-sensitive adhesive layer 30 are laminated in this order. At the interface A, the substrate 10 and the pseudo-adhesive layer 20 are quasi-bonded to each other.
Further, the pseudo adhesive label 1 according to this embodiment further has a release sheet RL, as shown in FIG. It should be noted that the pseudo adhesive label according to the present invention is not limited to having the release sheet RL.

"Pseudo-adhesion" means that the interface between one layer and the other layer laminated under specific conditions (for example, material combination and temperature range) can be easily peeled off, and after peeling, readhesion and readhesion It refers to adhesion in a form that does not exhibit any properties.
In the case of the pseudo-adhesive label according to the present embodiment, the substrate 10 as one layer and the pseudo-adhesive layer 20 as the other layer can be peeled at the interface A, and the interface A side surface of the substrate 10 after peeling , and the interface A-side surface of the pseudo-adhesive layer 20 do not exhibit readhesion or readhesion.

The shape of the pseudo-adhesive label 1 is not particularly limited. Examples of the shape of the pseudo-adhesive label 1 in plan view include polygons (for example, rectangles, triangles, etc.), circles, ellipses, irregular shapes, and the like.

(Base material)
The base material 10 of the pseudo-adhesive label 1 according to this embodiment is not particularly limited.
The substrate 10 is appropriately selected from substrates used in conventional pseudo-adhesive labels according to the purpose of use of the pseudo-adhesive label 1 .
In the pseudo-adhesive label 1, the substrate 10 is an information display substrate that displays information about the adherend. For example, when the adherend is an article to be delivered, the information on the adherend includes the name, address, and telephone number of the sender, destination, and delivery company, and the contents of the article to be delivered.

The thickness of the base material 10 is appropriately selected according to the application of the pseudo adhesive label 1 . The thickness of the substrate 10 is preferably 10 μm or more and 200 μm or less, more preferably 20 μm or more and 150 μm or less, and even more preferably 30 μm or more and 100 μm or less, from the viewpoint of handleability.
Examples of the substrate 10 include papers, resin films, synthetic papers, and laminated sheets in which two or more layers of these are laminated.
Examples of papers that can be used as the base material 10 include thermal paper, kraft paper, fine paper, glassine paper, parchment paper, rayon paper, coated paper, and synthetic fiber paper.
Examples of resin films that can be used as the substrate 10 include films of polyester-based resins, polyvinyl chloride-based resins, polyvinylidene chloride-based resins, and polyolefin-based resins.

The substrate 10 is preferably a paper substrate made of paper or synthetic paper, and more preferably thermal paper, kraft paper, woodfree paper, or glassine paper.
The basis weight of the paper substrate is preferably 10 g/m ² or more and 100 g/m ² or less, more preferably 15 g/m ² or more and 80 g/m ² or less. According to the pseudo-adhesive label 1 according to the present embodiment, even if the base material 10 is a paper base material having a basis weight within such a range, it is possible to suppress breakage of the base material when the base material is peeled off.

(Pseudo adhesive layer)
The pseudo-adhesive layer 20 of the pseudo-adhesive label 1 according to this embodiment contains a thermoplastic resin with a crystallinity of 22.5% or less.
As used herein, the degree of crystallinity of the pseudo-adhesion layer is a value calculated based on the scattering intensity measured by the wide-angle X-ray diffraction method.
The degree of crystallinity of the thermoplastic resin contained in the pseudo adhesive layer 20 is preferably 10% or more, more preferably 15% or more.
The degree of crystallinity of the thermoplastic resin contained in the pseudo adhesive layer 20 is preferably 22.0% or less, more preferably 21.5% or less.

It is preferable that the pseudo adhesive layer 20 according to one aspect of the present embodiment is substantially made of only a thermoplastic resin having a degree of crystallinity of 22.5% or less. The fact that the pseudo-adhesion layer 20 is substantially composed only of a thermoplastic resin having a crystallinity of 22.5% or less means that 80% by mass or more of the total mass of the pseudo-adhesion layer 20 has a crystallinity of It means that it is composed of 22.5% or less thermoplastic resin. The pseudo-adhesion layer 20 preferably contains 85% by mass or more, more preferably 90% by mass or more, of a thermoplastic resin having a crystallinity of 22.5% or less with respect to the total mass of the pseudo-adhesion layer 20. , more preferably 95% by mass or more. The content of the thermoplastic resin in the pseudo-adhesion layer 20 is defined as “substantially” because impurities that may be contained in the raw material used for manufacturing the pseudo-adhesion layer 20 or the pseudo-adhesion layer This is because the pseudo-adhesion layer 20 may unintentionally contain impurities that may be mixed in during the manufacturing process of the .

The pseudo-adhesive layer 20 according to this embodiment is directly laminated on the substrate 10 .
The pseudo adhesive force of the pseudo adhesive layer 20 to the substrate 10 is 250 mN/50 mm or more and 1500 mN/50 mm or less.
The pseudo adhesive force of the pseudo adhesive layer 20 to the substrate 10 is preferably 350 mN/50 mm or more, more preferably 450 mN/50 mm or more.
The pseudo adhesive force of the pseudo adhesive layer 20 to the substrate 10 is preferably 1200 mN/50 mm or less, more preferably 1000 mN/50 mm or less.
If the pseudo-adhesive force of the pseudo-adhesive layer 20 to the base material 10 is 250 mN/50 mm or more, it is possible to prevent the base material 10 from unintentionally peeling off from the pseudo-adhesive layer 20 .
If the pseudo-adhesive force of the pseudo-adhesive layer 20 to the substrate 10 is 1500 mN/50 mm or less, it is possible to prevent the substrate 10 from tearing when the substrate 10 is separated from the pseudo-adhesive layer 20 .

The pseudo-adhesive strength of the pseudo-adhesive layer 20 to the substrate 10 after storing the pseudo-adhesive label 1 for 3 days under conditions of 60° C. and 95% RH is preferably 450 mN/50 mm or more, and is preferably 550 mN/50 mm or more. is more preferable.
The pseudo-adhesive strength of the pseudo-adhesive layer 20 to the substrate 10 after storing the pseudo-adhesive label 1 at 60° C. and 95% RH for 3 days is preferably 1500 mN/50 mm or less, and preferably 1450 mN/50 mm or less. is more preferable.
The pseudo-adhesive strength of the pseudo-adhesive layer 20 to the base material 10 after being stored for 3 days under conditions of 60° C. and 95% RH is sometimes referred to as “(time-dependent) pseudo-adhesive strength”.
The pseudo-adhesive strength of the pseudo-adhesive layer 20 to the base material 10 can be measured by the method described in Examples below.

The thermoplastic resin contained in the pseudo adhesive layer 20 is not particularly limited as long as it is a crystalline thermoplastic resin and has a degree of crystallinity of 22.5% or less. As will be described later, the degree of crystallinity can be controlled by appropriately changing the conditions for forming the pseudo-adhesive layer 20 according to the type of thermoplastic resin.
Thermoplastic resins contained in the pseudo adhesive layer 20 include, for example, polyolefin-based resins, polyester-based resins, and polyamide-based resins. The pseudo-adhesion layer 20 may contain one type of thermoplastic resin, or may contain two or more types thereof.

The thermoplastic resin contained in the pseudo adhesive layer 20 is preferably a polyolefin resin. A polyolefin resin is a polymer having at least structural units derived from an olefin monomer.
The olefin monomer is preferably an olefin having 2 or more and 8 or less carbon atoms. Examples of olefins having 2 to 8 carbon atoms include ethylene, propylene, butylene, isobutylene and 1-hexene.
In one aspect of the present embodiment, the olefin monomer is more preferably at least any monomer selected from the group consisting of ethylene, propylene, and butylene, which are olefins having 2 or more and 4 or less carbon atoms. More preferably, it is at least one monomer selected from the group consisting of ethylene and propylene, which are 2 or more and 3 or less olefins.
The polyolefin-based resin may be a polymer using one type of olefin monomer alone, or a copolymer using two or more types of olefin monomers in combination.

Examples of polyolefin resins include polyethylene resin, polypropylene resin (PP), polybutene resin (PB), ethylene-propylene copolymer, olefin elastomer (TPO), ethylene-vinyl acetate copolymer (EVA), ethylene- Examples thereof include methyl methacrylate copolymer (EMMA) and olefinic terpolymers such as ethylene-propylene-(5-ethylidene-2-norbornene). The polyolefin resin is preferably at least one resin selected from the group consisting of polyethylene resin, polypropylene resin (PP) and polybutene resin (PB), and is selected from the group consisting of polyethylene resin and polypropylene resin (PP). It is more preferable that at least one of the resins is used.
Examples of polyethylene resins include ultra-low density polyethylene (VLDPE, density: 880 kg/m ³ or more and less than 910 kg/m ³ ), low density polyethylene (LDPE, density: 910 kg/m ³ or more and less than 915 kg/m ³ ), and medium density polyethylene. Examples include polyethylene (MDPE, density: 915 kg/m ³ or more and less than 942 kg/m ³ ), high density polyethylene (HDPE, density: 942 kg/m ³ or more), and linear polyethylene.

The content of structural units derived from olefins having 2 to 4 carbon atoms in the polyolefin resin is 50% by mass or more and 100% by mass or less with respect to the total structural units (100% by mass) of the olefin resin. Is preferably 60% by mass or more and 100% by mass or less, more preferably 70% by mass or more and 100% by mass or less, and more preferably 80% by mass or more and 100% by mass or less More preferably, it is 90% by mass or more and 100% by mass or less.

The pseudo-adhesion layer 20 may contain one type of polyolefin-based resin as a thermoplastic resin, or may contain two or more types thereof.

When the substrate 10 is a paper substrate, the pseudo-adhesive layer 20 is included from the viewpoint of realizing good pseudo-adhesion with the paper substrate and from the viewpoint of facilitating thermocompression bonding to the paper substrate. The thermoplastic resin to be used is preferably at least one of polyethylene resin and polypropylene resin.

The pseudo adhesive layer 20 according to this embodiment may contain additives within a range that does not impair the effects of this embodiment. Examples of additives include antioxidants, lubricants, ultraviolet absorbers, colorants, antiblocking agents, and the like. When the pseudo-adhesion layer 20 contains an additive, the additive may be of one type or two or more types.
When the pseudo adhesive layer 20 contains an additive, the content of the additive is preferably 0.0001 parts by mass or more and 20 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin, and is preferably 0.0005 parts by mass. It is more preferably 0.001 part by mass or more and 10 parts by mass or less, more preferably 0.001 part by mass or more and 10 parts by mass or less.

The thickness of the pseudo-adhesion layer 20 is not particularly limited. The thickness of the pseudo adhesive layer 20 is preferably 5 μm or more and 50 μm or less, more preferably 5 μm or more and 40 μm or less, even more preferably 10 μm or more and 40 μm or less, and 10 μm or more and 30 μm or less. It is even more preferable to have
When the pseudo-adhesion layer 20 contains a polyolefin resin as the thermoplastic resin, the thickness of the pseudo-adhesion layer 20 is preferably 15 μm or more and 25 μm or less.

(Adhesive layer)
The adhesive layer 30 of the pseudo-adhesive label 1 contains a tackifying resin. Tackifying resins are sometimes referred to as tackifiers.
As described above, the adhesive layer 30 according to the present embodiment contains a tackifying resin from the viewpoint of low adherend selectivity and suppression of unintended peeling of the pseudo-adhesive label during the delivery process or the like.
The adhesive layer 30 of the pseudo adhesive label 1 according to this embodiment is a layer for attaching the pseudo adhesive label to an adherend. The component constituting the pressure-sensitive adhesive layer 30 is not particularly limited as long as it contains a tackifying resin, and is appropriately selected according to the application of the pseudo-adhesive label 1 .

Examples of the tackifying resin contained in the adhesive layer 30 include rosin-based resins, terpene phenolic resins, terpene resins, aromatic hydrocarbon-modified terpene resins, aliphatic petroleum resins, aromatic petroleum resins, and hydrogenated petroleum resins. , coumarone-indene resins, styrene resins, phenol resins, and xylene resins.

The adhesive layer 30 preferably contains a known adhesive. In the pressure-sensitive adhesive layer 30, examples of the pressure-sensitive adhesive combined with the tackifying resin include pressure-sensitive adhesives such as acrylic pressure-sensitive adhesives, natural rubber-based pressure-sensitive adhesives, synthetic rubber-based pressure-sensitive adhesives, and silicone-based pressure-sensitive adhesives. be done.
The adhesive contained in the adhesive layer 30 is preferably an acrylic adhesive in terms of weather resistance and price. Examples of acrylic pressure-sensitive adhesives include solvent-type acrylic pressure-sensitive adhesives and water-based emulsion-type acrylic resins.

The content of the tackifying resin in the adhesive layer 30 is preferably 0.1 parts by mass or more and 200 parts by mass or less with respect to 100 parts by mass of the main polymer of the adhesive.
When the pressure-sensitive adhesive layer 30 contains an acrylic resin as the main polymer, the content of the tackifying resin is 0.1 parts by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the acrylic resin as the main polymer. It is preferably 0.3 parts by mass or more and 25 parts by mass or less.
When the pressure-sensitive adhesive layer 30 contains synthetic rubber as the main polymer, the content of the tackifying resin is 0.1 parts by mass or more and 200 parts by mass or less with respect to 100 parts by mass of the synthetic rubber as the main polymer. It is preferably 0.5 parts by mass or more and 100 parts by mass or less.

The pressure-sensitive adhesive layer 30 may further contain additives as necessary. Examples of additives that the adhesive layer 30 may contain include fillers, softeners, heat and light stabilizers, antioxidants, cross-linking agents, and the like. Examples of fillers include zinc white, titanium oxide, silica, calcium carbonate and barium sulfate. Softening agents include, for example, process oils, liquid rubbers, plasticizers, and the like. Examples of heat-light stabilizers include benzophenone-based stabilizers, benzotriazole-based stabilizers, and hindered amine-based stabilizers. Phyto-based antioxidants, thioester-based antioxidants, and the like are included.

The thickness of the adhesive layer 30 is appropriately selected according to the application of the pseudo adhesive label 1 . The thickness of the adhesive layer 30 is preferably 1 μm or more and 50 μm or less, more preferably 5 μm or more and 50 μm or less, even more preferably 10 μm or more and 40 μm or less, and 10 μm or more and 30 μm or less. It is even more preferable that the thickness is 10 μm or more and 20 μm or less.

The adhesive strength of the pseudo-adhesive label 1 according to JIS Z 0237:2009 is preferably 6.0 N/25 mm or more from the viewpoint of suppressing unintentional peeling of the pseudo-adhesive label 1 from the adherend. 0 N/25 mm or more is more preferable.
Moreover, even if the adherend is made of a difficult-to-adhere material, the pseudo-adhesive label 1 preferably exhibits sufficient adhesive strength. A representative example of a difficult-to-adhere adherend is a polyethylene film packaging material, and the adhesive strength of the pseudo-adhesive label 1 when polyethylene is used as the adherend is preferably 5.0 N/25 mm or more. , 7.0 N/25 mm or more, and more preferably 8.0 N/25 mm or more.
A method for measuring the adhesive force of the pseudo-adhesive label using polyethylene as the adherend will be described in the examples below.

(Release sheet)
The release sheet RL protects the adhesive layer 30 until the pseudo adhesive label 1 is attached to the adherend.
The release sheet RL is not particularly limited as long as it can be used by being attached to the adhesive layer of the adhesive sheet. Examples of the release sheet RL include a single-sided release sheet and a double-sided release sheet. The single-sided release sheet has a release sheet substrate and a release treated layer provided on one side of the release sheet substrate. The double-sided release sheet comprises a release sheet base material, a first release treated layer provided on one side of the release sheet base material, and a second release treated layer provided on the other side of the release sheet base material. and have The release treated layer can be formed by applying a release agent onto the surface of the release sheet substrate.

Examples of base materials for release sheets include papers and plastic films.
Papers include, for example, woodfree paper, glassine paper, kraft paper, and the like. Examples of plastic films include polyester resin films and polyolefin resin films. Examples of polyester resin films include films of polyethylene terephthalate resin, polybutylene terephthalate resin, polyethylene naphthalate resin, and the like. Examples of polyolefin resin films include films of polypropylene resin, polyethylene resin, and the like.
The papers and plastic films used as the release sheet substrate may be the same as or different from the papers and plastic films exemplified in the description of the substrate 10 of the pseudo adhesive label 1, for example.

Examples of release agents include rubber-based elastomers such as silicone-based resins, olefin-based resins, isoprene-based resins and butadiene-based resins, long-chain alkyl-based resins, alkyd-based resins, fluorine-based resins, and the like.

The thickness of the release sheet RL is not particularly limited. The thickness of the release sheet RL is preferably 10 μm or more and 200 μm or less, more preferably 25 μm or more and 170 μm or less, further preferably 30 μm or more and 150 μm or less, and 35 μm or more and 100 μm or less. It is even more preferable that the thickness is 35 μm or more and 80 μm or less.

<Manufacturing method of pseudo-adhesive label>
The pseudo-adhesive label 1 according to this embodiment can be manufactured, for example, by a manufacturing method including the following steps P1 and P2.

・Process P1
Step P1 is a step of laminating the base material 10 and the pseudo-adhesive layer 20 . A laminate in which the interface A between the base material 10 and the pseudo-adhesive layer 20 is quasi-bonded, which is manufactured in step P1, may be hereinafter referred to as a "quasi-adhesive laminate".

・Process P2
Step P2 is a step of laminating the pressure-sensitive adhesive layer 30 on the pseudo-adhesive layer 20 of the pseudo-adhesive laminate obtained in step P1.

First, process P1 will be described.
A method for laminating the pseudo-adhesive layer 20 on the substrate 10 is not particularly limited.
The method for manufacturing the pseudo-adhesive label 1 according to this embodiment includes a step of melt-extruding a pseudo-adhesive layer material including a material constituting the pseudo-adhesive layer 20 onto the substrate 10 (melt extrusion step). In the method for manufacturing the pseudo-adhesive label 1 according to this embodiment, the pseudo-adhesive layer material contains at least a thermoplastic resin. In this embodiment, when the material forming the pseudo-adhesion layer 20 is made of only a predetermined thermoplastic resin, the "pseudo-adhesion layer material" corresponds to the thermoplastic resin. Further, when the material constituting the pseudo-adhesion layer 20 contains not only a predetermined thermoplastic resin but also other materials, the "pseudo-adhesion layer material" corresponds to a composition containing the thermoplastic resin. .

As a method of melt extruding the pseudo-adhesive layer material, for example, a method using a T-die can be mentioned.
The temperature at which the pseudo adhesive layer material is melted and extruded (melt extrusion temperature) is one of the factors for controlling the degree of crystallinity within the desired range (22.5% or less). It is preferable that the melt extrusion temperature of the pseudo-adhesion layer material is appropriately set according to the type of the thermoplastic resin forming the pseudo-adhesion layer 20 so that the desired degree of crystallinity can be obtained. Further, the melt extrusion temperature is more preferably a temperature at which the pseudo adhesive layer material does not melt and adhere to the substrate 10 .
When a polyolefin resin is used as the thermoplastic resin constituting the pseudo adhesive layer 20, the melt extrusion temperature is usually 200° C. or higher and 400° C. or lower, preferably 230° C. or higher and 350° C. or lower. ° C. or more and 300 ° C. or less is more preferable.

The thickness of the thermoplastic resin layer when the pseudo-adhesion layer material is melted and extruded is also one of the factors for controlling the degree of crystallinity within the desired range (22.5% or less). The thickness of the thermoplastic resin layer to be melt-extruded is preferably set appropriately according to the type of the thermoplastic resin forming the pseudo-adhesive layer 20 so as to obtain the desired degree of crystallinity.
When a polyolefin resin is used as the thermoplastic resin constituting the pseudo adhesive layer 20, the thickness of the thermoplastic resin layer to be melt-extruded is preferably 15 μm or more and 25 μm or less, and is 18 μm or more and 23 μm or less. is more preferred.

Step P1 also includes a step of cooling the melt extruded pseudo-adhesive layer material (cooling step).
In the cooling step, the pseudo-adhesion layer material that has been heated and melted is brought into contact with cooling means such as a cooling roll to form the pseudo-adhesion layer 20 . The cooling roll has a cylindrical body with a metal outer peripheral surface. The cooling roll has a cooling function by allowing cooling water or the like to pass through the inside of the cylinder. When a cooling roll is used as a cooling means, the pseudo-adhesive layer material melted and extruded onto the base material may be cooled by directly contacting the outer peripheral surface of the cooling roll, or the base material may be placed on the outer peripheral surface of the cooling roll, Direct contact may be used to indirectly cool the pseudo-adhesive layer material. In the cooling step, the melt-extruded pseudo adhesive layer material may be cooled by air cooling.
The temperature (cooling temperature) at which the pseudo-adhesive layer material is cooled is also one of the factors for controlling the degree of crystallinity of the thermoplastic resin within the desired range (22.5% or less). It is preferable that the cooling temperature of the pseudo-adhesion layer material is appropriately set according to the type of the thermoplastic resin forming the pseudo-adhesion layer 20 so that the desired degree of crystallinity can be obtained.
When a polyolefin resin is used as the thermoplastic resin forming the pseudo adhesive layer 20, the cooling temperature is preferably 15° C. or higher and 40° C. or lower, and more preferably 20° C. or higher and 35° C. or lower. In addition, when a cooling roll is used as the cooling means, the cooling temperature is the temperature of cooling water flowing through the cooling roll. When cooling the pseudo-adhesion layer material by air cooling, the cooling temperature is the ambient temperature in which the melt-extruded pseudo-adhesion layer material is placed, or when temperature-controlled air is forcibly blown to the pseudo-adhesion layer material. is the temperature of the air.

In the cooling step according to the present embodiment, the length of time for cooling the molten pseudo-adhesion layer material by the cooling means also controls the degree of crystallinity of the thermoplastic resin within the desired range (22.5% or less). is one of the elements of
When a cooling roll is used as a cooling means, the time (cooling time) in which the molten pseudo-adhesion layer material is brought into direct or indirect contact with the outer peripheral surface of the cooling roll is can be controlled by the speed of conveying (in this specification, it may be referred to as processing speed), and as a result, the degree of crystallinity of the thermoplastic resin can also be controlled. It is preferable that the processing speed is appropriately set according to the type of thermoplastic resin forming the pseudo-adhesive layer 20 so that a desired degree of crystallinity can be obtained.
When a polyolefin resin is used as the thermoplastic resin forming the pseudo adhesive layer 20, the processing speed is 40 m/min or more and 180 m/min or less, preferably 50 m/min or more and 160 m/min or less.

The degree of crystallinity of the thermoplastic resin in the pseudo-adhesive layer 20 can be controlled by adjusting at least one of the melt extrusion temperature, the thickness of the melt-extruded thermoplastic resin layer, the cooling temperature, and the cooling time. In addition, the factors controlling the crystallinity of the thermoplastic resin are not limited to these factors.

As described above, the quasi-adhesive laminate can be obtained by the process P1 including the melt extrusion process and the cooling process.

Next, process P2 will be described.
In step P2, the pressure-sensitive adhesive layer 30 is formed on the pseudo-adhesive layer 20 side surface of the pseudo-adhesive laminate.

Specifically, a pressure-sensitive adhesive composition containing a material constituting the pressure-sensitive adhesive layer 30 is applied to the release-treated surface of the release sheet RL to form the pressure-sensitive adhesive layer 30 on the release sheet RL. The adhesive composition in step P2 includes a tackifying resin and a base polymer. The pseudo-adhesive label 1 can be manufactured by attaching the pressure-sensitive adhesive layer 30 formed on the release sheet RL to the surface of the pseudo-adhesive laminate on the side of the pseudo-adhesive layer 20 .

Alternatively, a pseudo-adhesive label can be obtained by applying a pressure-sensitive adhesive composition to the surface of the pseudo-adhesive layer 20 side of the pseudo-adhesive laminate to form the pressure-sensitive adhesive layer 30, and then attaching a release sheet RL to the pressure-sensitive adhesive layer 30. 1 can be manufactured.

Examples of methods for applying the pressure-sensitive adhesive composition include roll coating, spin coating, spray coating, bar coating, knife coating, roll knife coating, blade coating, die coating and gravure coating. mentioned.

From the viewpoint of improving the adhesion between the pseudo-adhesive layer 20 side surface of the pseudo-adhesive laminate and the adhesive layer 30, the pseudo-adhesive layer 20 side surface is subjected to corona treatment or the like, and then the adhesive It is preferable to form the agent layer 30 .

The pseudo-adhesive label 1 may be appropriately punched.
For the punching process, for example, a punching blade along the outline of a predetermined label may be used to punch the release sheet RL together.
Alternatively, a cut may be made from the substrate 10 to the adhesive layer 30 so as not to punch the release sheet RL, and a plurality of pseudo adhesive labels 1 may be arranged on the release sheet RL. In this case, the cut made by the punching process may penetrate into the release sheet RL to the extent that the release sheet RL is punched and does not come off.
In addition, if necessary, the unnecessary portion around the outline of each pseudo adhesive label 1 may be removed from the release sheet RL.

<Uses of pseudo-adhesive labels>
FIG. 2 is a schematic cross-sectional view showing a state in which the pseudo adhesive label 1 is attached to the adherend 100. As shown in FIG.
The pseudo adhesive label 1 according to this embodiment can be peeled off at the interface between the adhesive layer 30 and the release sheet RL. As shown in FIG. 2 , after separating from the release sheet RL, the adhesive layer 30 of the pseudo adhesive label 1 is adhered to the adherend 100 .

When the pseudo-adhesive label 1 is used as a delivery slip, the adherend 100 is, for example, a delivery item. An item to be delivered is usually composed of an item to be delivered and a packaging material for packaging the item. Packaging materials include, for example, wrapping paper, wrapping films, wrapping boxes, wrapping containers, and the like. Materials for the packaging material include cardboard, paper, plastic, and metal. Since the pseudo-adhesive label 1 is attached to the packaging material of the item to be delivered, the adhesive layer 30 has an appropriate adhesive force to the packaging material.

FIG. 3 is a schematic cross-sectional view showing a state in which the substrate 10 is peeled off from the pseudo adhesive label 1 attached to the adherend 100. As shown in FIG.

The pseudo-adhesive label 1 according to this embodiment is used, for example, as a delivery slip. When the pseudo-adhesive label 1 is used as a delivery slip, the entire substrate 10 may be peeled off as a receipt.
Moreover, when the pseudo-adhesive label 1 is used as a delivery slip, it is also preferable that the substrate 10 of the pseudo-adhesive label 1 is divided into a plurality of label pieces by, for example, notches. For example, if the substrate 10 is split in two by a cut, one label strip can be used as a delivery note and the other label strip can be used as a receipt. A label piece as a receipt is usually peeled off at the interface A with the pseudo-adhesive layer 20 after being stamped or signed. The other label strip remains on the item to be delivered or on the box or container in which the item is packaged.
The receipt peeled off from the pseudo-adhesive label 1 is used by a delivery company or the like for sorting slips or the like.

(Effect of this embodiment)
The pseudo-adhesive label 1 according to this embodiment has a pressure-sensitive adhesive layer 30 containing a tackifying resin. Therefore, the pseudo-adhesive label 1 has low adherend selectivity and can suppress peeling from the adherend during the delivery process or the like.
Furthermore, the pseudo-adhesive layer 20 of the pseudo-adhesive label 1 according to the present embodiment contains a thermoplastic resin having a crystallinity of 22.5% or less, and the pseudo-adhesive strength of the pseudo-adhesive layer 20 to the substrate 10 is 250 mN. /50 mm or more and 1500 mN/50 mm or less. Therefore, the base material 10 and the pseudo-adhesive layer 20 are adhered to each other with an appropriate pseudo-adhesive force, and the pseudo-adhesive label 1 can prevent the base material 10 from unintentionally peeling off the pseudo-adhesive layer 20 . Furthermore, according to the pseudo adhesive label 1, the base material 10 can be easily peeled off from the pseudo adhesive layer 20 regardless of the storage conditions of the pseudo adhesive label, so tearing of the base material 10 can be suppressed.

The present invention will be described in more detail below with reference to examples. The present invention is by no means limited to these examples.

[Preparation of pseudo-adhesive label]
(Example 1)
A thermoplastic resin as a pseudo adhesive layer material was heated to 260° C., and a T-die was used to extrude a thermoplastic resin layer having a thickness of 20 μm onto the substrate. The thickness of the thermoplastic resin layer was controlled by adjusting the back pressure of the extruder screw. Cooling water adjusted to a water temperature of 23 ° C. is passed through the water-cooled roll, and the thermoplastic resin layer on the base material is brought into contact with the surface of the water-cooled roll to cool the molten thermoplastic resin layer. , solidified. Thus, a pseudo-adhesive layer laminated to the substrate was produced. In Example 1, Thermal TP60KS-F1 (basis weight: 65 g/m ² ) manufactured by Nippon Paper Industries Co., Ltd. was used as the surface substrate, and LC8001 manufactured by Japan Polyethylene was used as the thermoplastic resin of the pseudo-adhesive layer material.
The conveying speed of the substrate when producing the pseudo-adhesive layer, that is, the processing speed of the pseudo-adhesive layer was set to 150 m/min.
Next, 100 parts by mass of an acrylic adhesive (BPW6137N manufactured by Toyochem Co., Ltd.) and 7.5 parts by mass of a rosin-based tackifier (KE-100 manufactured by Arakawa Chemical Industries, Ltd.) are mixed to form an adhesive composition. made. Next, the produced pressure-sensitive adhesive composition was applied onto a release paper. As the release paper, "8K Blue" manufactured by Lintec Corporation was used. A roll coater was used to apply the adhesive composition.
The applied adhesive composition was dried to form an adhesive layer.
A pseudo-adhesive label according to Example 1 was produced by laminating the adhesive layer on the release paper and the pseudo-adhesive layer on the substrate. The pseudo-adhesive label according to Example 1 had a substrate, a pseudo-adhesive layer, an adhesive layer, and a release paper in this order.

(Example 2)
A pseudo-adhesive label according to Example 2 was produced in the same manner as in Example 1, except that the thickness of the thermoplastic resin layer in the production of the pseudo-adhesive label according to Example 1 was changed to 16 μm.

(Example 3)
A pseudo-adhesive label according to Example 3 was produced in the same manner as in Example 1, except that the extrusion temperature of the thermoplastic resin in the production of the pseudo-adhesive label according to Example 1 was changed to 270°C.

(Example 4)
Pseudo-adhesive according to Example 4 in the same manner as in Example 1 except that the thermoplastic resin used in the production of the pseudo-adhesive label according to Example 1 was changed to "Sumikasen L-405" manufactured by Sumitomo Chemical Co., Ltd. A label was made. "Sumikasen" is a registered trademark of Sumitomo Chemical Co., Ltd.

(Example 5)
A pseudo-adhesive label according to Example 5 was produced in the same manner as in Example 1, except that the blending amount of the tackifier in the production of the pseudo-adhesive label according to Example 1 was changed to 5.0 parts by mass.

(Example 6)
A pseudo-adhesive label according to Example 6 was produced in the same manner as in Example 1, except that the blending amount of the tackifier in the production of the pseudo-adhesive label according to Example 1 was changed to 2.5 parts by mass.

(Example 7)
The procedure was the same as in Example 1, except that the extrusion temperature of the thermoplastic resin in the production of the pseudo-adhesive label according to Example 1 was changed to 280°C, and the temperature of the cooling water flowing through the water-cooled roll was changed to 30°C. A pseudo-adhesive label according to Example 7 was produced.

(Example 8)
A pseudo-adhesive label according to Example 8 was produced in the same manner as in Example 1, except that the processing speed in the production of the pseudo-adhesive label according to Example 1 was changed to 60 m/min.

(Example 9)
A pseudo-adhesive label according to Example 9 was produced in the same manner as in Example 1, except that the thickness of the thermoplastic resin layer in the production of the pseudo-adhesive label according to Example 1 was changed to 12 μm.

(Comparative example 1)
A pseudo-adhesive label according to Comparative Example 1 was produced in the same manner as in Example 1, except that the thickness of the thermoplastic resin layer in the production of the pseudo-adhesive label according to Example 1 was changed to 27 μm.

(Comparative example 2)
A pseudo-adhesive label according to Comparative Example 2 was produced in the same manner as in Example 1, except that no tackifier was added to the pressure-sensitive adhesive layer in the production of the pseudo-adhesive label according to Example 1.

(Comparative Example 3)
A pseudo-adhesive label according to Comparative Example 3 was produced in the same manner as in Example 1, except that the temperature of the cooling water flowing through the water-cooled roll in the production of the pseudo-adhesive label according to Example 1 was changed to 10°C.

(Comparative Example 4)
A pseudo-adhesive label according to Comparative Example 4 was produced in the same manner as in Example 1, except that the processing speed in the production of the pseudo-adhesive label according to Example 1 was changed to 200 m/min.

(Comparative Example 5)
A pseudo-adhesive label according to Comparative Example 5 was produced in the same manner as in Example 1, except that the extrusion temperature of the thermoplastic resin in the production of the pseudo-adhesive label according to Example 1 was changed to 280°C.

(Comparative Example 6)
The procedure was the same as in Example 1, except that the extrusion temperature of the thermoplastic resin in the production of the pseudo-adhesive label according to Example 1 was changed to 280°C, and the temperature of the cooling water flowing through the water-cooled roll was changed to 10°C. A pseudo-adhesive label according to Comparative Example 6 was produced.

[Evaluation of pseudo-adhesive label]
The produced pseudo-adhesive labels were evaluated as follows. Evaluation results are shown in Table 1.

(crystallinity)
The degree of crystallinity of the thermoplastic resin contained in the pseudo-adhesive layer was determined by wide-angle X-ray diffraction.
The pseudo-adhesive layer was peeled off from the substrate, and the scattering intensity of the pseudo-adhesive layer alone was measured using an X-ray generator (RAD-3A model manufactured by Rigaku Corporation). Scattering intensity of [010] was measured with Cu-Kα rays. The crystallinity Xc was calculated based on the measured scattering intensity and the following formula (1). The unit of crystallinity is %.
(Crystallinity Xc)=(scattering intensity of crystal part)/(total scattering intensity)×100 (1)

((Normal state) Pseudo adhesive strength)
The pseudo-adhesive strength was measured according to JIS Z 0237:2009 180° peeling adhesive strength measurement. Specifically, first, the produced pseudo-adhesive label was fixed to a SUS plate using the adhesive layer of the pseudo-adhesive label itself. After that, the substrate of the pseudo-adhesive label was peeled off from the pseudo-adhesive layer under the conditions of a peeling speed of 0.3 m/min and a peeling angle of 180°. The magnitude of the force (peeling force) required for this peeling was measured, and the measured peeling force was taken as the pseudo-adhesive force. The unit of pseudo adhesion is mN/50 mm.

((Time) pseudo-adhesion)
The produced pseudo-adhesive label was stored for 3 days under conditions of 60° C. and 95% RH. After that, the pseudo adhesive strength was measured in the same manner as described in the above "(Normal state) pseudo adhesive strength". The pseudo-adhesive strength of the pseudo-adhesive label after storage under such heating and humidifying conditions was defined as the "(time-lapse) pseudo-adhesive strength" with respect to the above-mentioned "(normal) pseudo-adhesive strength."

(Thickness measurement of pseudo-adhesion layer)
The thickness of the pseudo-adhesive layer alone obtained by peeling off the pseudo-adhesive layer laminated on the substrate was measured. A constant pressure thickness gauge (PG-02) manufactured by Teclock Co., Ltd. was used for thickness measurement.

(Adhesive force)
The adhesive strength of the pseudo-adhesive label was measured according to JIS Z 0237:2009 180° peeling adhesive strength measurement.
The pseudo-adhesive label was cut to a width of 25 mm, the release paper was peeled off from the pseudo-adhesive label, and the pressure-sensitive adhesive layer was attached to a polyethylene plate or SUS#360 plate as an adherend. The pseudo-adhesive label and the adherend were press-bonded by reciprocating a roller weighing 2 kg once over the pseudo-adhesive label attached to the adherend.
After pressure bonding with a roller, the pseudo-adhesive label was peeled off from the adherend at a peeling speed of 300 mm/min after 24 hours, and the adhesive force was measured. In addition, all the steps in the measurement of adhesive strength were performed under an environment of 23° C. and 50% RH (relative humidity).

According to the pseudo-adhesive labels according to Examples 1 to 9, the substrate could be peeled off from the pseudo-adhesive layer without tearing of the substrate. This is because the pseudo-adhesive labels according to Examples 1 to 9 have a pseudo-adhesive layer containing a thermoplastic resin having a crystallinity of 22.5% or less, and the pseudo-adhesive force between the substrate and the pseudo-adhesive layer is , (Normal state) and (Aging) were 250 mN/50 mm or more and 1500 mN/50 mm or less. The amorphous portion of the pseudo-adhesive layer has a higher affinity with the tackifier than the crystalline portion, and has a degree of crystallinity of 22.5% or less, thereby trapping the tackifier that has migrated to the pseudo-adhesive layer. It is thought that the nature was effectively exhibited. In Examples 1 to 9, the crystallinity of the thermoplastic resin in the pseudo-adhesive layer was set to 22.5% or less by setting appropriate manufacturing conditions according to the thermoplastic resin used in the pseudo-adhesive layer. presumed to have been controlled.

Further, the pseudo-adhesive labels according to Examples 1 to 9 exhibited good adhesion to polyethylene and SUS as adherends. It is considered that this is because the pressure-sensitive adhesive layer contained a tackifier.

Therefore, according to the pseudo-adhesive labels according to Examples 1 to 9, the substrate and the pseudo-adhesive layer are adhered with an appropriate pseudo-adhesive force, unintended peeling of the substrate is suppressed, and the storage conditions of the pseudo-adhesive label are Regardless, it is considered that the base material can be easily peeled off from the pseudo-adhesive layer, and breakage of the base material can be suppressed. Furthermore, according to the pseudo-adhesive labels of Examples 1 to 9, the adherend selectivity is small, and it is thought that unintended peeling of the pseudo-adhesive label from the adherend can be suppressed.

On the other hand, with respect to the pseudo-adhesive labels according to Comparative Examples 1, 3, 4, 5 and 6, the substrate was torn when the substrate was peeled off from the pseudo-adhesive layer in the (time-dependent) pseudo-adhesive strength test. This is probably because the thermoplastic resin contained in the pseudo-adhesive layer had a degree of crystallinity exceeding 22.5%, and thus the property of trapping the tackifier that migrated to the pseudo-adhesive layer was not sufficiently exhibited. In the pseudo-adhesive labels according to Comparative Examples 1, 3, 4, 5, and 6, the tackifier was not sufficiently trapped in the amorphous portion in the pseudo-adhesive strength test (with time), and the substrate and the pseudo-adhesive layer were separated. It is thought that the pseudo-adhesive force between the base material and the pseudo-adhesive layer exceeded 1700 mN/50 mm after moving to the interface.
Regarding the pseudo-adhesive label according to Comparative Example 2, the substrate was not torn when the substrate was peeled off from the pseudo-adhesive layer. However, the adhesion to polyethylene and SUS was low. This is probably because the pressure-sensitive adhesive layer of the pseudo-adhesive label according to Comparative Example 2 did not contain a tackifier. According to the pseudo-adhesive label according to Comparative Example 2, tearing of the base material can be suppressed, but the pseudo-adhesive label may be peeled off from the adherend during the delivery process or the like.

REFERENCE SIGNS LIST 1 Pseudo-adhesive label, 10 Base material, 100 Adherend, 20 Pseudo-adhesive layer, 30 Adhesive layer, A Interface, RL Release sheet.

Claims (7)

a substrate;
an adhesive layer;
a pseudo-adhesive layer included between the substrate and the pressure-sensitive adhesive layer;
The pressure-sensitive adhesive layer contains a tackifying resin,
The pseudo-adhesion layer contains a thermoplastic resin having a crystallinity of 22.5% or less,
The crystallinity is a value calculated based on the scattering intensity measured by a wide-angle X-ray diffraction method,
The pseudo-adhesion layer is pseudo-adhered to the base material,
The pseudo-adhesive label, wherein the pseudo-adhesive strength of the pseudo-adhesive layer to the substrate is 250 mN/50 mm or more and 1500 mN/50 mm or less. The pseudo-adhesive label of claim 1,
The pressure-sensitive adhesive layer contains a base polymer,
The content of the tackifying resin in the pressure-sensitive adhesive layer is 0.1 parts by mass or more and 200 parts by mass or less with respect to 100 parts by mass of the main polymer.
Pseudo-adhesive label. In the pseudo-adhesive label according to claim 1 or claim 2,
The thermoplastic resin having a crystallinity of 22.5% or less is a polyolefin resin,
Pseudo-adhesive label. In the pseudo-adhesive label according to any one of claims 1 to 3,
The adhesive strength of the pseudo-adhesive label in JIS Z 0237:2009 is 6.0 N / 25 mm or more,
Pseudo-adhesive label. In the pseudo-adhesive label according to any one of claims 1 to 4,
The adhesive strength of the pseudo-adhesive label when polyethylene is used as the adherend is 5.0 N / 25 mm or more.
Pseudo-adhesive label. In the pseudo-adhesive label according to any one of claims 1 to 5,
The substrate is a paper substrate,
Pseudo-adhesive label. In the pseudo-adhesive label according to any one of claims 1 to 6,
Furthermore, it has a release sheet,
The pressure-sensitive adhesive layer is attached to the release sheet,
Pseudo-adhesive label.

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