Pseudo-adhesive labels

Abstract

To provide a nicely writable pseudo adhesive label.SOLUTION: A pseudo adhesive label 1 is provided, comprising a base material 10, a pseudo adhesive layer 20, and an adhesive layer 30 arranged in the described order, the pseudo adhesive layer 20 containing a thermoplastic resin and paper powder.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to pseudo-adhesive labels. [Background technology]

[0002] A pseudo-adhesive label is a label that, after being attached to an adherend, can be easily peeled from the substrate starting from the pseudo-adhesive interface, etc. Pseudo-adhesive labels have been put to practical use as, for example, delivery slips or information concealing labels.

[0003] For example, Patent Document 1 describes a pseudo-adhesive label having a substrate, a pseudo-adhesive layer containing a thermoplastic resin with a crystallinity of 22.5% or less, and an adhesive layer containing a tackifier resin, in which the pseudo-adhesive strength of the pseudo-adhesive layer to the substrate is within a specified range. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-160308 Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, with a pseudo-adhesive label, after the substrate is peeled off, characters or the like may be written on the surface of the pseudo-adhesive layer. However, Patent Document 1 does not specifically mention the ease of writing or printing characters or the like on the surface of the pseudo-adhesive layer after the substrate is peeled off (hereinafter referred to as "writability").

[0006] An object of the present invention is to provide a pseudo-adhesive label with excellent writability. [Means for solving the problem]

[0007] According to one aspect of the present invention, a pseudo-adhesive label is provided, which has a substrate, a pseudo-adhesive layer, and a pressure-sensitive adhesive layer in this order, and the pseudo-adhesive layer contains a thermoplastic resin and paper powder.

[0008] In the pseudo-adhesive label according to one embodiment of the present invention, the thermoplastic resin is preferably one or more selected from the group consisting of polyethylene resin, ethylene-vinyl acetate copolymer resin, and polypropylene resin.

[0009] In the pseudo-adhesive label according to one aspect of the present invention, the paper powder is preferably one or more selected from the group consisting of cellulose powder, pulp, and paper cuttings.

[0010] In the pseudo-adhesive label according to one aspect of the present invention, the substrate is preferably heat-sensitive paper or pressure-sensitive paper.

[0011] In a pseudo-adhesive label according to one embodiment of the present invention, the substrate has a first substrate surface and a second substrate surface opposite the first substrate surface, and it is preferable that the first substrate surface is in direct contact with the pseudo-adhesive layer.

[0012] In the pseudo-adhesive label according to one aspect of the present invention, it is preferable that when the substrate is peeled from the pseudo-adhesive layer, the peeling occurs at the interface between the substrate and the pseudo-adhesive layer.

[0013] In the pseudo-adhesive label according to one aspect of the present invention, it is preferable that the second substrate surface is printed.

[0014] In the pseudo-adhesive label according to one embodiment of the present invention, the content of the paper powder in the pseudo-adhesive layer is preferably 20 parts by mass or more relative to 100 parts by mass of all components of the pseudo-adhesive layer.

[0015] The pseudo-adhesive label according to one aspect of the present invention preferably further comprises a release liner, and the pressure-sensitive adhesive layer is attached to the release liner. [Effects of the Invention]

[0016] According to one aspect of the present invention, a pseudo-adhesive label with excellent writability can be provided. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a cross-sectional schematic view of a pseudo-adhesive label according to one embodiment of the present invention. [Figure 2] 1 is a schematic cross-sectional view showing a pseudo-adhesive label according to one embodiment of the present invention attached to an adherend. [Figure 3] 1 is a schematic cross-sectional view illustrating a state in which a substrate is peeled off from a pseudo-adhesive label according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0018] The present invention will be described below by taking an embodiment according to one aspect of the present invention as an example, but the present invention is not limited to this embodiment.

[0019] [Embodiment according to one aspect of the present invention] <Pseudo adhesive label> The pseudo-adhesive label according to this embodiment has a substrate, a pseudo-adhesive layer, and a pressure-sensitive adhesive layer in this order. In this specification, "pseudo-adhesion" refers to an adhesion in which one layer and another layer that are bonded together under specific conditions (e.g., a combination of materials and a temperature range) can be easily peeled off at the interface between them, and the layer does not exhibit re-adhesion or re-stickiness after peeling.

[0020] 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, a substrate 10, a pseudo adhesive layer 20, and a pressure-sensitive adhesive layer 30 are laminated in this order. The substrate 10 has a first substrate surface 10A and a second substrate surface 10B opposite to the first substrate surface 10A, and the first substrate surface 10A is in direct contact with the pseudo adhesive layer 20.

[0021] 1, the pseudo adhesive label 1 according to this embodiment further has a release liner RL. In the pseudo adhesive label 1 according to this embodiment, the pressure-sensitive adhesive layer 30 is attached to the release liner RL. Note that the pseudo adhesive label 1 according to the present invention is not limited to an embodiment having a release liner RL.

[0022] In the pseudo-adhesive label 1 according to this embodiment, the pseudo-adhesive layer 20 is pseudo-adhered to the substrate 10. That is, the substrate 10 and the pseudo-adhesive layer 20 are pseudo-adhered to each other at the interface A on the first substrate surface 10A side. The pseudo-adhesive layer 20 and the adhesive layer 30 do not peel off due to the adhesive strength of the adhesive layer 30. In the pseudo adhesive label 1 of this embodiment, when the substrate 10 as one layer is peeled from the pseudo adhesive layer 20 as the other layer, the peeling can be performed at the interface A between the substrate 10 and the pseudo adhesive layer 20, and after peeling, the interface A side surface of the substrate 10 and the interface A side surface of the pseudo adhesive layer 20 do not exhibit re-adhesion or re-stickiness.

[0023] There are no particular limitations on the shape of the pseudo adhesive label 1. Examples of the shape of the pseudo adhesive label 1 in plan view include polygons (for example, rectangles and triangles), circles, ellipses, and irregular shapes.

[0024] (base material) The substrate 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 depending on the intended use of the pseudo adhesive label 1. In the pseudo-adhesive label 1, the substrate 10 is preferably an information display substrate that displays information about the adherend. For example, if the adherend is a delivery item, the information about the adherend may include the name or title of the sender, destination, and delivery company, address, telephone number, and contents of the delivery item.

[0025] Examples of the substrate 10 include paper, resin film, synthetic paper, and laminated sheets in which two or more layers of these are laminated together. Examples of papers that can be used as the substrate 10 include thermal paper, pressure-sensitive 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. Examples of synthetic paper that can be used as the substrate 10 include polypropylene film and polyester film. Polypropylene film and polyester film appear white when voids are included, making it easy to control the appearance depending on the application.

[0026] The substrate 10 is preferably a paper substrate made of paper or synthetic paper, more preferably thermal paper, pressure-sensitive paper, kraft paper, fine paper, or glassine paper, and even more preferably thermal paper or pressure-sensitive paper.

[0027] When the substrate 10 is a paper substrate, the basis weight is 10 g / m 2 It is preferable that the content is 15 g / m or more. 2 The basis weight of the paper substrate is more preferably 200 g / m or more. 2 Preferably, it is 150 g / m or less. 2 It is more preferable that the following is satisfied: According to the pseudo adhesive label 1 according to this embodiment, even if the substrate 10 is a paper substrate having a basis weight in this range, substrate tearing when the substrate is peeled off can be suppressed.

[0028] The thickness of the substrate 10 is selected appropriately depending on the application of the pseudo adhesive label 1. From the viewpoint of handleability, the thickness of the substrate 10 is preferably 10 μm or more and 250 μm or less, more preferably 20 μm or more and 200 μm or less, and even more preferably 30 μm or more and 150 μm or less.

[0029] The second substrate surface 10B may be printed. If the second substrate surface 10B can be printed, the pseudo-adhesive label 1 can be used as a delivery label or the like.

[0030] (pseudo adhesive layer) The pseudo-adhesive layer 20 of the pseudo-adhesive label 1 according to this embodiment contains a thermoplastic resin and paper powder. In this specification, "paper powder" refers to powdery or thread-like (fibrous) minute solid matter derived from paper.

[0031] ·Thermoplastic resin Examples of the thermoplastic resin contained in the pseudo-adhesive layer 20 include polyethylene resin, ethylene-vinyl acetate copolymer resin, and polypropylene resin. From the viewpoint of exhibiting an appropriate pseudo-adhesion force, the thermoplastic resin contained in the pseudo-adhesion layer 20 is preferably one or more selected from the group consisting of polyethylene resin, ethylene-vinyl acetate copolymer resin, and polypropylene resin, and is more preferably polyethylene resin or ethylene-vinyl acetate copolymer resin.

[0032] From the viewpoint of pseudo-adhesive layer formability, the pseudo-adhesive layer 20 preferably contains 30 parts by mass or more of thermoplastic resin per 100 parts by mass of all components of the pseudo-adhesive layer 20, more preferably 40 parts by mass or more, and even more preferably 50 parts by mass or more.

[0033] ·Paper powder Examples of the paper powder contained in the pseudo-adhesive layer 20 include cellulose powder, pulp, and paper cuttings. From the viewpoint of improving the writability, the paper powder contained in the pseudo-adhesive layer 20 is preferably one or more selected from the group consisting of cellulose powder, pulp, and paper shavings, and more preferably cellulose powder. Furthermore, the pseudo-adhesive label 1 may be required to be easily torn by hand, for example, when it is attached to a final product and the final product is to be disposed of. By containing one or more paper powders selected from the group consisting of cellulose powder, pulp, and paper shavings in the pseudo-adhesive layer 20, the hand-tearability of the pseudo-adhesive label 1 is also improved.

[0034] The size of the paper powder contained in the pseudo-adhesive layer 20 is not particularly limited, but for example, if the paper powder is powdery, the particle size is preferably 1 μm or more and 100 μm or less. Also, for example, if the paper powder is fibrous, the major axis is preferably 1 μm or more and 100 μm or less.

[0035] From the viewpoint of ease of writing and tearing by hand, the pseudo-adhesive layer 20 preferably contains 20 parts by mass or more of paper powder, more preferably 40 parts by mass or more, and even more preferably more than 50 parts by mass, per 100 parts by mass of all components of the pseudo-adhesive layer 20. Furthermore, when the pseudo-adhesive layer 20 contains more than 50 parts by mass of paper powder, the pseudo-adhesive label 1 has excellent recyclability.

[0036] The pseudo-adhesive layer 20 may be a layer made of only thermoplastic resin and paper powder. Furthermore, the pseudo-adhesive layer 20 may contain other components such as additives in addition to the thermoplastic resin and paper powder, as long as the effects of the embodiment are not impaired.

[0037] Other ingredients For example, the pseudo-adhesive layer 20 may contain a filler. Examples of fillers include calcium carbonate, talc, kaolin, calcium hydroxide, alumina, titanium oxide, and zinc oxide. Furthermore, for example, the pseudo-adhesive layer 20 may contain an antioxidant. Examples of antioxidants include phenol-based antioxidants and phosphorus-based antioxidants.

[0038] There are no particular limitations on the thickness of the pseudo-adhesive layer 20. The thickness of the pseudo-adhesive layer 20 is preferably 1 μm or more and 50 μm or less, more preferably 3 μm or more and 40 μm or less, even more preferably 5 μm or more and 40 μm or less, even more preferably 7 μm or more and 30 μm or less, and even more preferably 10 μm or more and 25 μm or less.

[0039] (Adhesive layer) The adhesive layer 30 is formed from an adhesive composition. The adhesive composition forming the adhesive layer 30 preferably contains a tackifier resin. The adhesive composition forming the adhesive layer 30 preferably contains a known adhesive. Examples of adhesives that are combined with a tackifier resin in the adhesive layer 30 include acrylic adhesives, natural rubber adhesives, synthetic rubber adhesives, and silicone adhesives.

[0040] The thickness of the adhesive layer 30 is selected appropriately depending on 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, even more preferably 10 μm or more and 30 μm or less, and even more preferably 10 μm or more and 20 μm or less.

[0041] (Release liner) The release liner RL protects the adhesive layer 30 until the pseudo-adhesive label 1 is attached to an adherend. There are no particular limitations on the release liner RL as long as it can be used by being attached to the adhesive layer 30 of the pseudo adhesive label 1. The release treatment layer can be formed by applying a release agent onto the surface of the release liner substrate.

[0042] Examples of the substrate for the release liner include paper and plastic films. Examples of papers include fine paper, glassine paper, and kraft paper. 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, and polyethylene naphthalate resin. Examples of polyolefin resin films include films of polypropylene resin and polyethylene resin. The papers and plastic films used as the substrate for the release liner 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.

[0043] Examples of the release agent include rubber elastomers such as silicone resins, olefin resins, isoprene resins, and butadiene resins, long-chain alkyl resins, alkyd resins, and fluorine-based resins.

[0044] The thickness of the release liner RL is not particularly limited, and is preferably 10 μm or more and 200 μm or less, more preferably 25 μm or more and 170 μm or less, even more preferably 30 μm or more and 150 μm or less, even more preferably 35 μm or more and 100 μm or less, and even more preferably 35 μm or more and 80 μm or less.

[0045] <Manufacturing method of pseudo adhesive label> The pseudo adhesive label 1 according to this embodiment can be manufactured by, for example, a manufacturing method including the following steps P1 and P2.

[0046] Step P1 is a step of laminating the substrate 10 and the pseudo-adhesive layer 20. The laminate produced in step P1, in which the interface A between the substrate 10 and the pseudo-adhesive layer 20 is pseudo-adhered, may be referred to as a "pseudo-adhesive laminate" hereinafter. Step P2 is a step of laminating a pressure-sensitive adhesive layer 30 onto the pseudo-adhesive layer 20 of the pseudo-adhesive laminate obtained in step P1.

[0047] ·Process P1 First, step P1 will be described. The method for laminating the pseudo-adhesive layer 20 on the substrate 10 is not particularly limited. The manufacturing method of the pseudo adhesive label 1 according to this embodiment includes a step (melt extrusion step) of melt-extruding a pseudo adhesive layer material containing a material that constitutes the pseudo adhesive layer 20 onto the substrate 10. In the manufacturing method of the pseudo adhesive label 1 according to this embodiment, the pseudo adhesive layer material contains at least a thermoplastic resin and paper powder.

[0048] The method for melt-extruding the pseudo-adhesive layer material may be, for example, a method using a T-die. The temperature at which the pseudo-adhesion layer material is melted and extruded (melt extrusion temperature) is preferably set appropriately depending on the type of resin that constitutes the pseudo-adhesion layer 20. In addition, the melt extrusion temperature is preferably a temperature at which the pseudo-adhesion layer material does not melt and adhere to the substrate 10. In this embodiment, at least a thermoplastic resin is used as the resin constituting the pseudo-adhesive layer 20, so the melt extrusion temperature is typically 200°C or higher and 400°C or lower, preferably 230°C or higher and 350°C or lower, and more preferably 250°C or higher and 300°C or lower.

[0049] Step P1 also includes a step of cooling the melt-extruded pseudo-adhesive layer material (cooling step). In the cooling step, the heated and melted pseudo-adhesion layer material is brought into contact with a 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 surface. The cooling roll has a cooling function by passing cooling water or the like through the inside of the cylindrical body. When a cooling roll is used as the cooling means, the pseudo-adhesion layer material melt-extruded onto the substrate 10 may be cooled by directly contacting the outer surface of the cooling roll, or the substrate may be directly contacted with the outer surface of the cooling roll to indirectly cool the pseudo-adhesion layer material. In addition, in the cooling step, the melt-extruded pseudo-adhesion layer material may be cooled by air cooling. The cooling temperature of the pseudo-adhesive layer 20 is preferably 15°C or higher and 40°C or lower, and more preferably 20°C or higher and 35°C or lower. When a cooling roll is used as the cooling means, the cooling temperature is the temperature of the cooling water passed through the cooling roll. When the pseudo-adhesive layer material is cooled by air cooling, the cooling temperature is the ambient temperature in which the melt-extruded pseudo-adhesive layer material is placed, and when temperature-controlled air is forcibly blown onto the pseudo-adhesive layer material, the cooling temperature is the temperature of that air.

[0050] When a cooling roll is used as the cooling means, the time (cooling time) during which the molten pseudo-adhesive layer material is in direct or indirect contact with the outer surface of the cooling roll can be controlled by the speed at which the laminate comprising the substrate 10 and the pseudo-adhesive layer material is conveyed.

[0051] As described above, the pseudo-adhesive laminate can be obtained by the step P1 including the melt-extrusion step and the cooling step.

[0052] ·Process P2 Next, step P2 will be described. In step P2, a pressure-sensitive adhesive layer 30 is formed on the surface of the pseudo-adhesive laminate on the side of the pseudo-adhesive layer 20.

[0053] Specifically, an adhesive composition containing materials for forming the adhesive layer 30 is applied to the release-treated surface of the release liner RL to form the adhesive layer 30 on the release liner RL. The adhesive composition in step P2 contains a tackifier resin and an adhesive. The adhesive layer 30 formed on the release liner RL is attached to the surface of the pseudo-adhesive laminate that faces the pseudo-adhesive layer 20, thereby producing the pseudo-adhesive label 1.

[0054] Alternatively, the pseudo-adhesive label 1 can be produced by applying an adhesive composition to the surface of the pseudo-adhesive laminate on which the pseudo-adhesive layer 20 is located to form an adhesive layer 30, and then attaching a release liner RL to the adhesive layer 30.

[0055] Examples of methods for applying the pressure-sensitive adhesive composition include roll coating, bar coating, knife coating, roll knife coating, blade coating, die coating, and gravure coating.

[0056] In order to improve the adhesion between the pseudo-adhesive layer 20 and the pressure-sensitive adhesive layer 30 of the pseudo-adhesive laminate, it is preferable to form the pressure-sensitive adhesive layer 30 after subjecting the surface of the pseudo-adhesive laminate on the side of the pseudo-adhesive layer 20 to corona treatment or the like.

[0057] The pseudo adhesive label 1 may be subjected to punching processing as appropriate. The punching process may be carried out, for example, by punching out the entire release liner RL using a punching blade that follows the outline of the predetermined label. Alternatively, cuts may be made from the substrate 10 to the adhesive layer 30 so as not to punch through the release liner RL, and multiple pseudo adhesive labels 1 may be arranged on the release liner RL. In this case, the cuts made by punching may penetrate into the release liner RL to an extent that the release liner RL is not punched out and falls off. If necessary, unnecessary portions around the outer periphery of each pseudo-adhesive label 1 may be removed from the release liner RL.

[0058] <Applications of pseudo adhesive labels> FIG. 2 is a schematic cross-sectional view showing a state in which the pseudo adhesive label 1 is stuck to an adherend 100. As shown in FIG. The pseudo adhesive label 1 according to this embodiment can be peeled at the interface between the adhesive layer 30 and the release liner RL. After being separated from the release liner RL, the adhesive layer 30 of the pseudo adhesive label 1 is attached to the adherend 100, as shown in FIG.

[0059] When the pseudo-adhesive label 1 is used as a delivery slip, the adherend 100 can be, for example, a delivery item. A delivery item is usually composed of an item to be delivered and packaging material for packaging the item. Examples of packaging material include wrapping paper, wrapping film, packaging boxes, and packaging containers. Examples of packaging material include cardboard, paper, plastic, and metal. Since the pseudo-adhesive label 1 is attached to the packaging material of the delivery item, the adhesive layer 30 has an appropriate adhesive strength to the packaging material.

[0060] 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 stuck to the adherend 100. As shown in FIG.

[0061] 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 base material 10 may be peeled off as a receipt. Furthermore, 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 multiple label pieces, for example, by a slit. For example, if the substrate 10 is divided into two by a slit, one label piece can be used as a delivery slip and the other label piece can be used as a receipt. The label piece used 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 piece remains on the delivery item or the box or container in which the delivery item is packed. The receipt peeled off from the pseudo adhesive label 1 is used by a delivery company or the like to organize delivery slips. Furthermore, after peeling off the substrate 10, letters and the like can be written or printed on the surface of the pseudo-adhesive layer 20 remaining on the adherend 100, such as a packaging material, using a pencil, mechanical pencil, water-based or oil-based ballpoint pen, or water-based or oil-based pen, etc.

[0062] [Effects of this embodiment] The pseudo adhesive label 1 according to this embodiment has excellent peelability between the substrate 10 and the pseudo adhesive layer 20. The pseudo adhesive label 1 according to this embodiment also has excellent writability on the surface of the pseudo adhesive layer 20 after the substrate 10 has been peeled off. Furthermore, the pseudo adhesive label 1 according to this embodiment also has excellent hand tearability. [Example]

[0063] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0064] [Creating pseudo-adhesive labels] Example 1 A pseudo-adhesive layer material was obtained by mixing polyethylene resin and cellulose powder in the amounts shown in Table 1. The pseudo-adhesive layer material was heated to 260°C and melted, and a resin layer having a thickness of 20 μm was formed on the substrate (basis weight 65 g / m) using a T-die. 2 The resin layer was extruded onto a thermal paper (1000 x 1000 mm). Cooling water adjusted to a temperature of 23°C was passed through a water-cooled roll, and the resin layer on the substrate was brought into contact with the surface of the water-cooled roll, thereby cooling and solidifying the molten resin layer. In this way, a pseudo-adhesive laminate was produced. Next, an acrylic pressure-sensitive adhesive composition was applied onto the release liner. A roll coater was used to apply the pressure-sensitive adhesive composition. The applied pressure-sensitive adhesive composition was dried to form a pressure-sensitive adhesive layer. A pseudo-adhesive label was produced by bonding the pressure-sensitive adhesive layer on the release liner and the pseudo-adhesive laminate (pseudo-adhesive layer on the substrate).

[0065] (Examples 2 and 3) For Examples 2 and 3, pseudo-adhesive labels were produced in the same manner as in Example 1, except that the blending amounts of polyethylene resin and cellulose powder in the pseudo-adhesive layer were changed as shown in Table 1.

[0066] (Comparative Example 1) For Comparative Example 1, as shown in Table 1, each pseudo-adhesive label was prepared in the same manner as in Example 1, except that no cellulose powder was used and the pseudo-adhesive layer material was changed to 100 parts by mass of polyethylene resin.

[0067] (Comparative Example 2) For Comparative Example 2, each pseudo-adhesive label was prepared in the same manner as in Example 1, except that calcium carbonate was used instead of cellulose powder and the blending amounts of polyethylene resin and calcium carbonate were changed as shown in Table 1.

[0068] [Peel force measurement] The peel strength was measured as follows for each of the pseudo-adhesive labels produced in Examples 1 to 3 and Comparative Examples 1 and 2. The measurement results are shown in Table 1. The 180-degree peel adhesive strength was measured in accordance with JIS Z 0237:2009. Specifically, the release liner of the prepared pseudo-adhesive label was first peeled off to expose the adhesive layer, and the adhesive layer was then attached to a stainless steel test plate to fix the pseudo-adhesive label. The substrate of the pseudo-adhesive label was then peeled off from the pseudo-adhesive layer at a peel speed of 0.3 m / min and a peel angle of 180 degrees. The force required for this peeling (peel force) was measured, and the measured peel force was taken as the peel force (pseudo-adhesive force). The unit of peel force is mN / 25 mm.

[0069] [Evaluation of pseudo-adhesive labels] The writability of each of the pseudo-adhesive labels produced in Examples 1 to 3 and Comparative Examples 1 and 2 was evaluated as follows. The evaluation results are shown in Table 1.

[0070] (Written evaluation) For each of the pencil, ballpoint pen, and water-based pen with hardness B, a straight line 20 mm long was drawn using a ruler on the pseudo-adhesive layer from which the substrate had been peeled off. The drawn straight line was evaluated according to the following criteria. A: You can write without any problems, and even if you rub the writing surface with your finger, the lines do not bleed. B: Writing is possible without any problems, but straight lines bleed when the writing surface is rubbed C: Unable to write or straight lines completely disappear after rubbing the writing surface

[0071] [Table 1]

[0072] As shown in Table 1, the pseudo-adhesive labels according to Examples 1 to 3 were labels with excellent writability. On the other hand, the pseudo-adhesive label of Comparative Example 1 was inferior in writability to the pseudo-adhesive labels of Examples 1 to 3. Furthermore, the pseudo-adhesive label of Comparative Example 2 was as excellent as the pseudo-adhesive labels of Examples 1 to 3 in terms of writability with a ballpoint pen, but was inferior in other areas of writability.

[0073] (Evaluation of hand tearability) Additionally, assuming that the pseudo-adhesive labels would be used on paper substrates such as envelopes, the hand tearability of each of the pseudo-adhesive labels produced in Examples 1 to 3 and Comparative Examples 1 and 2 was also evaluated. Specifically, the release liner of the produced pseudo-adhesive label was peeled off to expose the adhesive layer, and the adhesive layer was attached to a high-quality paper substrate to fix the pseudo-adhesive label, and then the substrate was torn apart by hand together with the pseudo-adhesive label. As a result, the pseudo-adhesive labels of Examples 1 to 3 could be easily torn by hand without stretching the pseudo-adhesive layer when torn, and the cross section after tearing had an appearance in which it was visually indistinguishable between the adherend (paper layer) and the pseudo-adhesive layer. On the other hand, the pseudo-adhesive labels of Comparative Examples 1 and 2 could not be torn by hand because stretching occurred in the pseudo-adhesive layer when torn. [Explanation of symbols]

[0074] 1...pseudo adhesive label, 10...substrate, 10A...first substrate surface, 10B...second substrate surface, 100...adherend, 20...pseudo adhesive layer, 30...adhesive layer, A...interface, RL...release liner.

Claims

1. A substrate; a pseudo-adhesive layer; and a pressure-sensitive adhesive layer in this order, The pseudo-adhesive layer contains a thermoplastic resin and paper powder. Pseudo adhesive labels.

2. The thermoplastic resin is at least one selected from the group consisting of polyethylene resin, ethylene-vinyl acetate copolymer resin, and polypropylene resin. The pseudo-adhesive label of claim 1 .

3. The paper powder is one or more selected from the group consisting of cellulose powder, pulp, and paper cutting waste. The pseudo-adhesive label according to claim 1 or 2.

4. The substrate is heat-sensitive paper or pressure-sensitive paper. The pseudo-adhesive label according to any one of claims 1 to 3.

5. the substrate has a first substrate surface and a second substrate surface opposite the first substrate surface; The first substrate surface is in direct contact with the pseudo-adhesive layer. The pseudo-adhesive label according to any one of claims 1 to 4.

6. When the substrate is peeled from the pseudo-adhesive layer, the pseudo-adhesive label peels off at the interface between the substrate and the pseudo-adhesive layer. The pseudo-adhesive label of claim 5.

7. Printed on the second substrate surface, The pseudo-adhesive label according to claim 5 or 6.

8. The content of the paper powder in the pseudo-adhesive layer is 20 parts by mass or more relative to 100 parts by mass of all components of the pseudo-adhesive layer. The pseudo-adhesive label according to any one of claims 1 to 7.

9. Further, it has a release liner, The pressure-sensitive adhesive layer is attached to the release liner. The pseudo-adhesive label according to any one of claims 1 to 8.

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