JP2010039185A - Pseudo adhesive label - Google Patents

Abstract

The present invention prevents heavy peeling during half-cutting or punching, and prevents the surface substrate from being torn when the surface substrate is peeled together with a thermoplastic resin layer.
A pseudo-adhesive label 10 is formed by laminating a surface base material 11, a thermoplastic resin layer 12, an intermediate base material 13, and an adhesive layer 14 in this order. In the pseudo-adhesive label 10, the thermoplastic resin layer 12 and the intermediate base material 13 are pseudo-adhered. The pressure-sensitive adhesive layer 14 is adhered to the adherend, and the surface base material 11 is peeled from the intermediate base material 13 together with the thermoplastic resin layer 12. The pseudo-adhesive label 10 has a heart cut line 20 cut from the surface base material 11 side or punched from the surface base material 11 side. When the average elastic modulus of the thermoplastic resin layer 12 is A [GPa] and the average elastic modulus of the intermediate base material 13 is B [GPa], the relationship of A × 2 ≦ B is satisfied.
[Selection] Figure 1

Description

  The present invention relates to a pseudo-adhesive label applied to a delivery slip used for transportation and management of articles, a record slip used for application for various insurances and tickets, and the like.

  For example, a delivery slip or the like is used in order to manage a distribution process including ordering of goods, shipping, receipt of a customer, etc. in mail, parcel delivery, mail order sales, and the like. As one of widely used delivery slips, there is a slip in which a plurality of pressure sensitive papers are overlapped. In such a delivery slip, when filling in information such as product name and destination, it is necessary to apply a strong pressure to write the information down to the bottom slip, and a ballpoint pen, typewriter, dot printer, etc. are required. It is said. However, writing with a ballpoint pen or a typewriter is a cumbersome manual operation, and causes erroneous delivery due to typographical errors, omissions, or copying errors. In addition, when using a dot printer, there is a drawback that printing takes time. Furthermore, a part of a delivery slip in which a plurality of pressure sensitive papers are stacked may be broken or peeled off during the distribution process.

  In recent years, in order to solve the above problems, for example, a surface base material, a pseudo adhesive layer, an intermediate base material, an adhesive layer, and a release sheet are laminated in this order. A pseudo-adhesive label that is pseudo-adhered so that the gap can be peeled off is being used for delivery slips (see, for example, Patent Documents 1 and 2). The pseudo-adhesive label is used as a delivery slip after the release sheet is peeled off and the adhesive layer is attached to the delivery.

  Such a delivery slip for a pseudo-adhesive label is usually provided with a half-cut line so that one surface substrate can be separated and separated as two label portions. For example, one label portion is used as a delivery slip, the other label portion is used as a receipt slip, peeled off after stamping / signing, and taken home, and used for slip arrangement.

By using pseudo-adhesive labels, it is possible to manage the distribution process with a single sheet from the order of goods to the receipt of customers in mail, courier, mail order, etc. Furthermore, slips and loss of slips in the distribution process, etc. Can also be prevented. In addition, since information can be written by laser printer, thermal transfer, etc., it is possible to fill in quickly and to reduce typographical errors and omissions.
Japanese Patent Laid-Open No. 11-202771 JP-A-11-256112

  For the intermediate substrate of the pseudo-adhesive label, a thermoplastic resin or a paper coated with an emulsion resin layer is used, and for the pseudo-adhesive layer, a thermoplastic resin is used. However, when cutting a half-cut line by die cutting or punching a label, the thermoplastic resin of the pseudo-adhesive layer bites into the resin layer or paper of the intermediate base material, and these are integrated and heavy peeling May be caused. When such heavy peeling occurs, the peeling resistance when the surface base material is peeled off from the intermediate base material together with the pseudo adhesive layer becomes high, and the surface base material is easily broken.

  Therefore, the present invention has been made in view of the above problems, and prevents the thermoplastic resin of the pseudo adhesive layer from biting into the intermediate substrate when cutting a half-cut line or punching a label. And it aims at providing the pseudo-adhesive label which suppressed that peeling force became heavy when peeling a surface base material by it.

  In the pseudo-adhesive label according to the present invention, a surface base material, a thermoplastic resin layer, an intermediate base material, and an adhesive layer are laminated in this order, and the thermoplastic resin layer and the intermediate base material are pseudo-adhered, In the pseudo-adhesive label that adheres the adhesive layer to the adherend and peels between the thermoplastic resin layer and the intermediate substrate, the cut line is cut from the surface substrate side or punched from the surface substrate side. When the average elastic modulus of the thermoplastic resin layer is A [GPa] and the average elastic modulus of the intermediate base material is B [GPa], the relationship of A × 2 ≦ B is satisfied.

  0.1 ≦ A ≦ 0.5 [GPa], preferably 1 ≦ B ≦ 10 [GPa], and preferably satisfy the relationship of A × 5 ≦ B.

  The intermediate substrate is preferably a brittle substrate sheet. For example, the brittle substrate sheet with the pressure-sensitive adhesive layer has a tear strength in the machine direction (MD) and transverse direction (TD) of 0.1 to 0.1 respectively. 10N. The brittle substrate sheet is, for example, either a polystyrene sheet or a polylactic acid sheet.

  The surface base material can be separated into two or more by a cut line together with the thermoplastic resin layer and can be peeled off. The cut line cuts the surface base material and the thermoplastic resin layer so as not to cut the intermediate base material, for example. It is a half-cut line.

The intermediate base material may have a peeling control layer provided on the surface on the thermoplastic resin layer side. The surface substrate is, for example, kraft paper, fine paper, glassine paper, or thermal paper having a basis weight of 15 to 120 g / m ² .

  In the present invention, when cutting a cut line or punching a label, it is possible to prevent the thermoplastic resin from biting into the intermediate base material, and to prevent the peeling force from becoming heavy when the surface base material is peeled off. .

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view schematically showing a pseudo adhesive label according to an embodiment of the present invention. As shown in FIG. 1, the pseudo-adhesive label 10 is formed by laminating a surface base material 11, a thermoplastic resin layer 12, an intermediate base material 13, and an adhesive layer 14 in this order. 15 is attached to the pressure-sensitive adhesive layer 14. The pseudo-adhesive label 10 is used after the release substrate 15 is peeled off from the pressure-sensitive adhesive layer 14 and is adhered to an adherend with the exposed pressure-sensitive adhesive layer 14.

  The pseudo adhesive label 10 is provided with a half-cut line 20. The half-cut line 20 is obtained by cutting the surface base material 11 and the thermoplastic resin layer 12 so as not to cut the intermediate base material 13. The half cut line 20 may be formed in a perforated shape, or may be formed in a single slit or the like.

  FIG. 2 is a plan view schematically showing a pseudo-adhesive label according to an embodiment of the present invention. As shown in FIG. 2, after the pseudo-adhesive label 10 is punched, the surface base material 11, the thermoplastic resin layer 12, the intermediate base material 13, and the adhesive layer 14 are punched and cut. Unnecessary portions are removed from the peeling base material 15 by scraping and are formed into a substantially rectangular label having the upper side 10A and the lower side 10B as long sides and the left and right side sides 10C and 10D as short sides. The pseudo-adhesive label 10 is subjected to a half-cut process as well as a punching process, and the above-described half-cut line 20 is formed. The punching process and the half-cut process are performed by die cutting, for example.

  The half-cut line 20 extends vertically from the upper side 10A to the lower side 10B. The surface base material 11 can be separated and peeled off with the thermoplastic resin layer 12 as left and right rectangular sheets (referred to as label portions 21 and 22) by a half-cut line 20. Each of the label portions 21 and 22 is peeled off from the intermediate base material 13 starting from one of the four corner portions 21A to 21D and 22A to 22D of the label portions 21 and 22, and the corner portions 21A to 21D. 22A to 22D are used as the peeling start part.

As the surface substrate 11, for example, craft paper, fine paper, glassine paper, thermal paper, parchment paper, rayon paper, coated paper, and the like are used. Preferably, craft paper, fine paper, glassine paper, or thermal paper is used. used. Although the basic weight of the surface base material 11 is 15-120 g / m < ² >, for example, it is preferable that it is 20-100 g / m < ² >. The surface base 11 is used as a surface on which information such as characters is displayed on the surface.

  The thermoplastic resin layer 12 is a layer interposed between the surface base material 11 and the intermediate base material 13 and is pseudo-bonded to the intermediate base material 13 so as to be peeled off. By providing such a thermoplastic resin layer 12, the surface base material 11 is separated from the intermediate base material 13 in a state where the pseudo adhesive label 10 is adhered to the adherend by the pressure-sensitive adhesive layer 14 together with the thermoplastic resin 12. It is peeled off.

The average elastic modulus A [GPa] of the thermoplastic resin layer 12 is preferably 0.1 ≦ A ≦ 0.5. The thermoplastic resin for forming the thermoplastic resin layer 12 is not particularly limited as long as the average elastic modulus can be within the above range. For example, low density polyethylene (LDPE, density: 0.910 g / cm ³ or more) 0.930 g / cm ³ ), medium density polyethylene (density: 0.930 g / cm ³ or more and less than 0.942 g / cm ³ ), polyethylene such as high density polyethylene (HDPE, density: 0.942 g / cm ³ or more) Polypropylene, polymethylpentene, etc. are used alone or in admixture of two or more. Although the thickness of a thermoplastic resin layer is not specifically limited, For example, 10-50 micrometers, Preferably it is 15-40 micrometers. In addition, various additives such as an antioxidant, an ultraviolet absorber, a light stabilizer, a flexibility imparting agent, a flame retardant, an antistatic agent, a foaming agent, a lubricant, a filler, and coloring are added to the thermoplastic resin as necessary. An agent or the like can be appropriately blended. The average elastic modulus A refers to the average elastic modulus at 23 ° C. at a depth of 1 μm from the surface on the intermediate base material 13 side, measured by the nanoindentation method for the thermoplastic resin layer 12.

  The intermediate base material 13 is not particularly limited as long as the average elastic modulus B [GPa] satisfies the relationship of A × 2 ≦ B. For example, paper such as glassine paper and transparent paper, polystyrene resin, It is formed by a sheet made of ABS resin, polyvinyl alcohol resin, acrylic resin, polylactic acid resin, cellophane film or the like.

  In this way, when the average elastic modulus B of the intermediate base material 13 is set to be twice or more the average elastic modulus A of the thermoplastic resin layer 12, the punching process and the half-cut process are performed when the thermoplastic resin layer 12 is Intrusion into the intermediate substrate 13 is suppressed. This prevents heavy peeling between the thermoplastic resin layer 12 and the intermediate substrate 13 along the outer periphery of the label (that is, the sides 10A to 10D) and the half-cut line 20. Therefore, in this embodiment, the peeling force when peeling the surface base material 11 from each corner | angular part 21A-21D, 22A-22D can be lightened, and the tearing of the surface base material 11 can be prevented.

  In order to more effectively prevent the thermoplastic resin 12 from biting into the intermediate base material 13, it is more preferable to satisfy the relationship of A × 5 ≦ B. The average elastic modulus B of the intermediate base material 13 is preferably 1 ≦ B ≦ 10, and more preferably 2 ≦ B ≦ 8. The average elastic modulus B refers to the average elastic modulus at 23 ° C. at a depth of 1 μm from the surface on the thermoplastic resin layer 12 side of the intermediate substrate 13 measured by the nanoindentation method.

  The pseudo-adhesive label 10 is used by being attached to an adherend such as paper on which predetermined information is displayed, for example. Therefore, after the surface base material 11 is peeled from the intermediate base material 13 together with the thermoplastic resin layer 12, the intermediate base material 13 is preferably made of a transparent material so that the information on the adherend can be visually recognized. . In order to prevent leakage of personal information and the like, the intermediate base material 13 is preferably a brittle base material sheet that can be easily broken together with the adherend after the information on the adherend is confirmed. Therefore, as the intermediate substrate 13, among the above materials, paper such as glassine paper and transparent paper, polyvinyl chloride resin, polystyrene resin, ABS resin, polyvinyl alcohol resin, acrylic resin, polylactic acid resin, cellophane film, etc. It is preferable that a sheet is used.

  The intermediate substrate 13 is in a state where the pressure-sensitive adhesive layer 14 is provided on one surface (hereinafter referred to as an intermediate substrate with a pressure-sensitive adhesive layer), and the longitudinal direction (MD) and the lateral direction (TD) measured by a tensile test method described later. It is preferable that each tear strength is 0.1-10N. If the tear strength is less than 0.1N, it is easy to tear and difficult to handle, and if it exceeds 10N, the brittleness decreases, which is not preferable. From the viewpoint of balance between handleability and brittleness, a more preferable tear strength is in the range of 0.3 to 5N. The intermediate substrate 13 may be imparted with brittleness in the entire surface direction, or may be brittle in a specific direction when the tear direction of the adherend is fixed. The vertical direction (MD) is the film forming direction of the intermediate base material 13 and the horizontal direction (TD) is the direction of 90 ° with respect to the film forming direction.

FIG. 4 is a schematic diagram illustrating a method for measuring the tear strength in the machine direction (MD) and the transverse direction (TD) for the intermediate substrate with an adhesive layer. As shown in FIG. 4, a pseudo-adhesive label having a width of 60 mm and a length of 80 mm is attached to one surface of a high-quality paper 100 having a size of 70 mm × 100 mm under the conditions of 23 ° C. and 50% RH. In this test, two types of pseudo-adhesive labels in which the width direction is vertical (MD, film forming direction) and horizontal (TD, 90 ° direction of film forming) are produced. After leaving for 1 hour, the surface base material is peeled off together with the thermoplastic resin layer to expose the intermediate base material 13. Then, adhesive sheets 110 and 111 each having a width of 25 mm and a length of 100 mm are pasted for 10 mm each so that there is no gap between the intermediate substrate side and the back side of the high-quality paper. The end of the adhesive sheet 110 affixed to the material side is sandwiched between the upper chuck of the tensile tester and the end of the adhesive sheet 111 is sandwiched between the lower chuck, and an intermediate substrate with an adhesive layer is affixed at a speed of 50 mm / min. Tear the paper. With the tear strength at this time as X, the tear strength of the intermediate substrate with the pressure-sensitive adhesive layer is calculated from the following formula.
Tear strength = Tear strength X-Tear strength of fine paper

  As the intermediate substrate 13, substrates other than those described above can be used, but polystyrene sheets and polylactic acid sheets are particularly preferably used from the viewpoint of easy adjustment of tear strength and prevention of contamination during incineration. The

  The method for forming the intermediate substrate 13 is not particularly limited, and conventionally known methods such as a solution casting method (casting method), a melt extrusion method (extrusion method), an inflation method, a calendar method, a sol cast method, and the like. It can be suitably selected from among them depending on the type of resin. The sheet formed by these methods may be subjected to a uniaxial stretching process or a biaxial stretching process as necessary. Although the thickness of an intermediate base material is not specifically limited, For example, it is 5-70 micrometers, Preferably it is 10-50 micrometers.

  In addition, the intermediate substrate 13 may have various additives as necessary, for example, an antioxidant, an ultraviolet absorber, a light stabilizer, a flexibility imparting agent, a flame retardant, an antistatic agent, a foaming agent, a lubricant, a filler, A coloring agent or the like can be appropriately blended. In the present embodiment, the intermediate base material 13 is subjected to a surface treatment on one or both sides by an oxidation method, an unevenness method, or the like as desired for the purpose of improving the adhesion with the thermoplastic resin 12 or the pressure-sensitive adhesive layer 14. be able to. Examples of the oxidation method include corona discharge treatment, plasma treatment, chromic acid treatment (wet), flame treatment, hot air treatment, ozone / ultraviolet irradiation treatment, and the like. Examples include solvent processing methods. These surface treatment methods are appropriately selected depending on the type of the substrate, but in general, the corona discharge treatment method is preferably used from the viewpoints of effects and operability.

  The surface of the intermediate substrate 13 to be bonded to the thermoplastic resin layer 12 may be coated with a peeling control layer for reducing the peeling resistance, and the peeling control layer is not particularly limited, but is styrene-acrylic copolymer. It is formed of a polymer, polystyrene, styrene-butadiene copolymer, ethylene vinyl acetate copolymer, acrylic ester, acrylic ester copolymer, ethylene / acrylic copolymer, or the like. Further, the thickness of the peeling control layer is not particularly limited, but is a thickness that does not affect the value of the average elastic modulus B, and is thinner than the intermediate substrate 13, for example, 5 to 5 It is preferable that it is 25 micrometers, Preferably it is 10-20 micrometers. In addition, when the peeling control layer is provided, the surface base material 11 is peeled from the interface between the thermoplastic resin layer 12 and the peeling control layer together with the thermoplastic resin layer 12.

  As described above, the thermoplastic resin layer 12 has an adhesive force between the surface base material 11 and an adhesive force between the surface base material 11 and the intermediate base material 13 so that the intermediate base material 13 and the thermoplastic resin layer 12 It can be peeled between. Such a difference in adhesion may be provided, for example, due to a difference in material between the surface base material 11 and the intermediate base material 13, or the peel resistance between the thermoplastic resin layer 12 and the intermediate base material 13. It may be provided by being lowered by the above-described peeling control layer.

  The pressure-sensitive adhesive layer 14 is provided on the back surface side of the intermediate base material 13 and is a layer for sticking the pseudo pressure-sensitive adhesive label 10 to an adherend. The pressure-sensitive adhesive layer 14 is formed from a conventionally known pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive, a natural rubber-based pressure-sensitive adhesive, a synthetic rubber-based pressure-sensitive adhesive, or a silicone-based pressure-sensitive adhesive. An agent is preferably used. In addition, a strong-viscosity acrylic pressure-sensitive adhesive is suitably used from the viewpoints of adhesive strength and pseudo peel strength. Furthermore, an emulsion-based acrylic pressure-sensitive adhesive that can be produced without using a solvent as much as possible from the viewpoint of the global environment is preferably used. The resin component of the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is mainly composed of a (meth) acrylic acid alkyl ester monomer having 4 to 12 carbon atoms in the alkyl group, and other vinyl monomers copolymerizable therewith. Those obtained by copolymerization are suitable.

  Examples of the (meth) acrylic acid alkyl ester monomer having 4 to 12 carbon atoms in the alkyl group include butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isooctyl (meth) ) Acrylate, decyl (meth) acrylate, and the like. The vinyl monomer copolymerized therewith is used to adjust the adhesive strength and cohesive strength of the resulting adhesive. Specifically, the alkyl group has 1 to 3 carbon atoms (meth) acrylic. Illustrative examples include acid alkyl esters; hydroxyl group-containing acrylic acid alkyl esters; α, β-unsaturated carboxylic acids such as (meth) acrylic acid, crotonic acid and maleic acid; acrylamide; acrylonitrile; styrene; vinyl acetate; it can.

  These monomer mixtures can be copolymerized by a conventionally known method such as a solution polymerization method, an emulsion polymerization method, a suspension polymerization method, or a bulk polymerization method. Examples of the solvent used for polymerization include toluene, hexane, heptane, ethyl acetate, acetone, methyl ethyl ketone, methanol, water and the like. Polymerization initiators include peroxide initiators such as benzoyl peroxide, lauroyl peroxide, and methyl ethyl ketone peroxide, and azo initiators such as azobisisobutyronitrile, azobiscyanovaleric acid, and azobiscyanopentane. It can be illustrated.

  The pressure-sensitive adhesive may contain a crosslinking agent such as an isocyanate crosslinking agent, an epoxy crosslinking agent, a metal chelate crosslinking agent, or an aziridine crosslinking agent. The blending amount of the crosslinking agent is preferably 0.5 to 5 parts by weight, particularly preferably 1 to 3.5 parts by weight with respect to 100 parts by weight of the acrylic resin component in order to obtain the required adhesive properties. All are solid content conversion values). Conventional adhesives include tackifiers, fillers, antioxidants, heat stabilizers, UV absorbers, light stabilizers, colorants, flame retardants, thickeners, antistatic agents, etc. What is blended may be blended. Although the thickness of the adhesive layer 13 is not specifically limited, For example, 5-50 micrometers, Preferably it is 10-40 micrometers.

  As the peeling substrate 15, a conventionally known peeling sheet is used without particular limitation. For example, polyester films such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyolefin films such as polyethylene, polypropylene, polymethylpentene, paper base materials such as clay coated paper, glassine paper, recycled paper, etc. A laminate paper or the like on which a thermoplastic resin such as polyethylene is laminated is used in which one side is peeled with a release treatment agent. Examples of the release treatment agent include silicone resins, long chain alkyl resins, fluorine resins, and the like, but silicone resins are preferable. Although the thickness of the peeling base material 15 is not specifically limited, For example, it is 20-200 micrometers, Preferably it is 40-100 micrometers.

Next, the manufacturing method of the pseudo pressure-sensitive adhesive label according to this embodiment will be described with reference to FIG.
As shown in FIG. 3, in this embodiment, it has the 1st and 2nd delivery rolls 31 and 32, the cooling roll 33, the touch roll 34, the winding roll 36, and the T die 35 which is a flat die. A pseudo-adhesive label is manufactured using a laminating apparatus 30 equipped with an extruder 37.

  The surface base material 11 is fed from the first feed roll 31 to the cooling roll 33, and the intermediate base material 13 is fed from the second feed roll 32 to the touch roll 34. The touch roll 34 is a roll adjacent to the cooling roll 33 through a gap, and the gap distance with the cooling roll 33 can be adjusted. In the gap between the cooling roll 33 and the touch roll 34, the thermoplastic resin melted from the T die 35 is extruded into a film shape. And in the space | interval of the cooling roll 33 and the touch roll 34, the surface base material 11 and the intermediate base material 13 are crimped | bonded to the thermoplastic resin supplied to the film form, and, thereby, the surface base material 11, the thermoplastic resin layer 12 The laminated body 18 is formed by laminating the intermediate base material 13 in this order. The laminate 18 is wound up on a winding roll 36.

  Cooling water is passed through the cooling roll 33, and the surface temperature is cooled to 5 to 30 ° C. The surface base material 11 is drawn out so that the surface for recording information contacts the cooling roll 33. The temperature of the thermoplastic resin supplied from the T die 35 is usually about 200 to 400 ° C. The gap between the cooling roll 33 and the touch roll 34 is adjusted so that the thickness of the thermoplastic resin layer 12 becomes a desired thickness. When the surface substrate 11 is thermal paper, the surface temperature of the cooling roll 33, the temperature of the thermoplastic resin supplied from the T die 35, the gap between the cooling roll 33 and the touch roll 34, and the winding of the laminate 18 The speed and the like are appropriately adjusted so that the thermal paper does not develop color.

  Further, a pressure-sensitive adhesive is applied to the surface of the separately prepared release substrate 15 to form a pressure-sensitive adhesive layer 14. And the intermediate base material 13 of the laminated body 18 is bonded together to the adhesive layer 14 formed in the peeling base material 15, and the pseudo adhesive label 10 is obtained. However, the pressure-sensitive adhesive is directly applied to the intermediate base material 13 of the laminate 18 to form the pressure-sensitive adhesive layer 14, and the peeling base material 15 is bonded onto the pressure-sensitive adhesive layer 14 to produce the pseudo adhesive label 10. May be. As described above, the pseudo-adhesive label 10 is punched and half-cut to be formed into a desired label shape.

  There are no particular restrictions on the method for applying the adhesive, and examples thereof include air knife coaters, blade coaters, bar coaters, gravure coaters, roll coaters, curtain coaters, die coaters, knife coaters, screen coaters, and Meyer. Examples thereof include a method using a coating machine such as a bar coater and a kiss coater.

  Next, the present invention will be described below using examples, but the present invention is not limited to the configurations of the following examples.

[Example 1]
Using the laminating apparatus shown in FIG. 3, the thermal paper (made by Nippon Paper Industries Co., Ltd., trade name: TP60KJ-R, basis weight (65 g / m ² )) is fed out from the first feeding roll as the surface base material. A 25 μm-thick polystyrene film (trade name: Cellomer S-2, manufactured by Okura Kogyo Co., Ltd.) is fed from the feed roll as an intermediate substrate, and low-density polyethylene (product name: Sumitomo Chemical Co., Ltd., product name) is used as a thermoplastic resin from the T-die. Sumikacene L-405H) was melt extruded at 300 ° C. to a thickness of 25 μm, and the surface base material was laminated to an intermediate base material through a thermoplastic resin layer to obtain a three-layer laminate. Next, the emulsion-based acrylic pressure-sensitive adhesive (manufactured by Lintec, product name: SG) is dried on the surface of the release substrate (product of Lintec, product name: 8K Ao) so that the thickness after drying becomes 20 μm. And dried to form an adhesive layer. And the peeling base material in which the adhesive layer was formed was bonded together to the 3 layer laminated body so that the adhesive layer might closely_contact | adhere to the intermediate base material of the said 3 layer laminated body, and the pseudoadhesive label was obtained. The pseudo-adhesive label is half-cut and die-cut by die-cutting, then raised, and has a width of 150 mm and a length of 100 mm, with a half-cut line at the center in the length direction, as shown in FIG. The label shape was processed.

[Example 2]
The same procedure as in Example 1 was performed except that a polylactic acid film having a thickness of 25 μm (trade name: TERRAMAC TF-15, manufactured by Unitika Co., Ltd.) was used as an intermediate substrate.

[Example 3]
Super transparent glassine paper with a basis weight of 35.0 g / m ² (made by Oji Specialty Paper Co., Ltd., trade name: Grafan) was used as an intermediate substrate, and acrylic emulsion resin (Mitsui Chemicals Co., Ltd.) was formed on this ultra transparent glassine paper. , Bonron S-1318) was applied and dried so that the coating amount after drying was 4.0 g / m ² to provide a peeling control layer. Next, using the laminating apparatus shown in FIG. 3, thermal paper (Nippon Paper Industries Co., Ltd., trade name: TP60KJ-R, basis weight (65 g / m ² )) is fed out as a surface base material from the first feeding roll. The above intermediate base material is fed from a feed roll No. 2, and a low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikasen L-405H) is melt extruded from a T die as a thermoplastic resin at 300 ° C. to a thickness of 25 μm. Then, the surface base material was laminated on the surface of the intermediate base material provided with the peeling control layer via the thermoplastic resin layer to obtain a three-layer laminate. Thereafter, in the same manner as in Example 1, a pseudo-adhesive label having a label shape as shown in FIG. 2 was produced.

[Comparative Example 1]
Low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikasen L-405H) as a thermoplastic resin is extruded from the T die so as to have a thickness of 20 μm, and is a thermal paper (manufactured by Nippon Paper Industries Co., Ltd., trade name). : TP60KJ-R, basis weight (65 g / m ² )) was laminated on the back surface to form a thermoplastic resin layer. On this thermoplastic resin layer, an acrylic emulsion resin (Mitsui Chemicals Co., Ltd., Bonlon S-1318) was applied and dried so that the coating amount after drying was 4.0 / m ² , and a peeling control layer was formed. Provided. Next, low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikasen L-405H) is extruded from the T die so as to have a thickness of 20 μm and laminated on the release control layer, and the low density corresponding to the intermediate substrate is obtained. A density polyethylene layer was formed to obtain a laminate. Thereafter, in the same manner as in Example 1, a pseudo-adhesive label having a label shape as shown in FIG. 2 was produced.

[Comparative Example 2]
Low density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikasen L-405H) as a thermoplastic resin is extruded from the T die so as to have a thickness of 20 μm, and is a thermal paper (manufactured by Nippon Paper Industries Co., Ltd., trade name). : TP60KJ-R, basis weight (65 g / m ² )) was laminated on the back surface to form a thermoplastic resin layer. On this thermoplastic resin layer, a low-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikasen L-405H) is extruded from a T die so as to have a thickness of 20 μm, and laminated to obtain a low equivalent to an intermediate substrate. A density polyethylene layer was formed to obtain a laminate. Thereafter, in the same manner as in Example 1, a pseudo-adhesive label having a label shape as shown in FIG. 2 was produced.

[Evaluation methods]
(1) Peel test It was evaluated whether the pseudo-adhesive label stuck on the cardboard as the adherend could be peeled off without tearing the surface substrate by manual peeling. The test for peeling the label portion 22 from the corner portion 22C shown in FIG. 2 in the direction of the arrow at a peeling angle of 180 ° was performed 20 times, and the number of times the surface base material was broken was determined by the defective peeling rate (number of times the tear was generated / test The number of times × 100).

(2) Measurement of elastic modulus After peeling the surface base material from the intermediate base material together with the thermoplastic resin layer, the thermoplastic resin layer is used with a nano indenter (MTS, product name: Nano Indenter (TestWorks-4)). For each intermediate substrate, the average elastic modulus at 23 ° C. at a depth of 1 μm was measured from the surface in contact with each of the intermediate substrate and the thermoplastic resin layer. Therefore, for the intermediate substrate of Example 3, the average elastic modulus was measured on the surface where the peel control layer was laminated. Moreover, regarding the thermoplastic resin layer of Comparative Example 1, the average elastic modulus was measured on the surface on which the peeling control layer was laminated.

(3) Tear strength The tear strength was measured in the machine direction (MD) and transverse direction (TD) according to the method described in the text of the specification.

(4) Hand-cut property Affixed with a pseudo-adhesive label produced in Examples and Comparative Examples on the surface of a regular envelope made of high-quality paper, peeled off the upper layer portion (surface substrate and thermoplastic resin layer), and then enveloped The state when the lower layer portion (intermediate base material and pressure-sensitive adhesive layer) remaining on the substrate was broken by hand together with the envelope was judged by the following evaluation.
○: The lower layer portion remaining on the envelope and the envelope could be broken.
X: The lower layer part remaining on the envelope and the envelope could not be broken.

It is sectional drawing which shows a pseudo | simulation adhesive label typically. It is a top view which shows a pseudo | simulation adhesive label typically. It is a figure which shows typically the laminating apparatus used in order to manufacture a pseudo adhesion label. It is the schematic which shows the method for measuring tear strength.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pseudo-adhesive label 11 Surface base material 12 Thermoplastic resin layer 13 Intermediate base material 14 Adhesive layer 15 Peeling base materials 21A-21D, 22A-22D Corner

Claims (10)

The surface base material, the thermoplastic resin layer, the intermediate base material, and the pressure-sensitive adhesive layer are laminated in this order, and the thermoplastic resin layer and the intermediate base material are pseudo-bonded, and the pressure-sensitive adhesive layer is attached to the adherend. In the pseudo-adhesive label that is stuck and peeled between the thermoplastic resin layer and the intermediate substrate,
A cut line is cut from the surface substrate side, or punched from the surface substrate side,
The pseudo-adhesion characterized by satisfying the relationship of A × 2 ≦ B, where the average elastic modulus of the thermoplastic resin layer is A [GPa] and the average elastic modulus of the intermediate substrate is B [GPa]. label.   The pseudo-adhesive label according to claim 1, wherein 0.1 ≦ A ≦ 0.5 [GPa] and 1 ≦ B ≦ 10 [GPa].   The pseudoadhesive label according to claim 1, wherein the relationship of A × 5 ≦ B is satisfied.   The pseudo adhesive label according to claim 1, wherein the intermediate substrate is a brittle substrate sheet.   The pseudo-adhesive label according to claim 4, wherein the brittle substrate sheet with the pressure-sensitive adhesive layer has a tear strength in the machine direction (MD) and the transverse direction (TD) of 0.1 to 10 N, respectively.   The pseudo-adhesive label according to claim 4, wherein the brittle substrate sheet is any one of a polystyrene sheet and a polylactic acid sheet.   The pseudo-adhesive label according to claim 1, wherein the surface base material is separated into two or more by the cut line together with the thermoplastic resin layer and can be peeled off.   The pseudo-adhesive label according to claim 7, wherein the cut line is a half-cut line obtained by cutting the surface base material and the thermoplastic resin layer so as not to cut the intermediate base material.   The pseudo-adhesive label according to claim 1, wherein the intermediate substrate has a peeling control layer provided on the surface on the thermoplastic resin layer side. Pseudo adhesive label according to claim 1, wherein the surface substrate is kraft paper having a basis weight of 15~120g / m ^2, high quality paper, and wherein the glassine paper, or a thermal paper.

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