JP2001172583A - Adhesive label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adhesive label excellent in ink transferability and scratch resistance of an ink (a recorded image), including a type of an adhesive label that does not need a release paper, having printed thereon by a thermal transfer method. SOLUTION: A releasing layer having a contact angle within 35-60 degree formed on one surface of a label substrate having a pressure sensitive adhesive layer on the other surface is printed by a thermal transfer printing method using an ink comprising at least a resin having a melting point of 60-120 deg.C. The melting point of the releasing layer is set to 60-120 deg.C. The releasing layer is composed mainly of a long chain alkyl carbamate-based relaeasing agent obtained by reacting (a) a partially or fully saponified vinyl acetate (co)polymer with (b) an alkyl isocyanate such as octadecyl isocyanate or the like. A pressure sensitive adhesive tape without a releasing paper is printed by a thermal transfer printing method while being rewound. The adhesion between the pressure sensitive adhesive layer and a recording layer is adjusted to 5-80 N/m according to JIS-Z-0237 (the 180 deg. peeling method).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive label printed by a thermal transfer printing method on a release layer of a label substrate having a release layer and an adhesive layer. The present invention relates to an adhesive label having excellent scratch resistance.

[0002]

2. Description of the Related Art Conventionally, adhesive labels which can be subjected to thermal transfer printing are:
Polyester-based resin, polyurethane-based resin, polyacrylic-based resin, polyvinyl-based resin, crystalline polyethylene or other image-receiving layer is provided on one side of paper or film base material, and an adhesive is provided on the other side. It is possible to print patterns such as characters and bar codes on the image receiving layer by a thermal transfer printing method using ink using wax or resin as a binder.

[0003] However, depending on the type of the image receiving layer and the ink, the transferability of the ink to the image receiving layer may be poor, or the printed portion may be easily rubbed and thinned or disappear. Furthermore, the general adhesive label has to be transferred to the ink from the ink ribbon by heat, so that the image receiving layer of the adhesive label is generally easily wetted by the ink and the surface energy is high. Does not have a peeling property, for example, when an adhesive product such as an adhesive tape or an adhesive label adheres to the image receiving layer before and after printing, it cannot be peeled from the image receiving layer, and does not function as an image receiving layer Or information printed on the adhesive label may be lost.

[0004] For the above reasons, the conventional adhesive label has a printed surface of the adhesive label on a transparent adhesive film (hereinafter, referred to as a transparent adhesive film).
It is common to prevent information from being damaged by water droplets such as adhesion, rubbing, contaminants, rain, etc. by covering with an adhesive product (hereinafter, also referred to as over lamination). .

However, in the case of over-laminating, the cost of the over-laminating film becomes high, and the over-laminating after printing on the pressure-sensitive adhesive label increases the number of steps, resulting in inferior efficiency in issuing the pressure-sensitive adhesive label in a printing machine. was there.

[0006] Further, since the conventional pressure-sensitive adhesive label does not have releasability from the pressure-sensitive adhesive, it is necessary to hold the pressure-sensitive adhesive layer using a release paper (hereinafter, also referred to as a release liner) until use. It was not possible to make a pressure-sensitive adhesive label into a tape in which the layer and the ink-receiving layer were integrated, so-called linerless. Although labels that require such release papers are still in use today, more release papers that do not function as products are required than labels that are products, and when applying labels, the release paper must be peeled off. No. Such a label that requires useless release paper not only increases the product cost but also has a problem that the product is difficult to handle and has a bad influence on the natural environment.

[0007]

SUMMARY OF THE INVENTION The present invention has excellent ink transferability and ink (recorded image) abrasion resistance including an adhesive label which does not require a release paper and which has solved the above-mentioned disadvantages. Another object of the present invention is to provide an adhesive label printed by a thermal transfer method.

[0008]

That is, in order to solve the above-mentioned problems, the present invention provides a method in which a contact angle (a solution in which the mass ratio of water and ethanol is 1: 1 and a drop amount is 5
(measured after 60 seconds in μl) has a release layer in the range of 35 to 60 degrees, and the release layer of the label substrate having an adhesive layer on the other surface of the substrate has at least a melting point of 60 to 1
An adhesive label obtained by printing an ink containing a resin at 20 ° C. by a thermal transfer printing method.

The release layer preferably has a melting point of 60 to 120 ° C. and is obtained by reacting (a) a partially or completely saponified vinyl acetate (co) polymer with (b) an alkyl isocyanate. It is more preferable to use a long-chain alkyl carbamate-based release agent as a main component. further,
Preferably, the alkyl isocyanate is octadecyl isocyanate.

Preferably, the pressure-sensitive adhesive label is issued using a pressure-sensitive adhesive tape that does not require a release paper, and the pressure-sensitive adhesive layer conforms to JIS-Z-0237 (180 ° peeling method) between the pressure-sensitive adhesive layer and the recording layer. Preferably, the force is between 5 and 80 N / m.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The pressure-sensitive adhesive label of the present invention has a release layer having a specific contact angle on one surface of a substrate, and the release of a label substrate having a pressure-sensitive adhesive layer on the other surface of the substrate. An ink containing a resin having a specific melting point is printed on the layer by a thermal transfer printing method.

In the present invention, the base material of the pressure-sensitive adhesive label is not particularly limited, and examples thereof include glassine paper, woodfree paper, kraft paper, cast paper, synthetic paper, impregnated paper, and polymer film. May or may not be provided, but in the case of a paper substrate, it is preferable to use a material which has been subjected to a sealing treatment in order to suppress penetration when the release layer of the present invention is provided.

As the filler layer, a layer containing a pigment and / or an adhesive as a main component is used. Examples of the adhesive include polyvinyl alcohol, polyvinylpyrrolidone, polyethyleneimine, polyacrylate, starches, cellulose derivatives, urethane. Resins, acrylic resins, polyester resins, alkyd resins, melamine resins, styrene-butadiene copolymer latex emulsions, styrene-acrylic copolymer latex emulsions, acrylate resin systems and the like can be used alone or in combination. .

Examples of the pigment include inorganic pigments such as kaolin, aluminum hydroxide, heavy calcium carbonate, light calcium carbonate, titanium oxide, talc, satin white, calcium sulfate, barium sulfate, zinc oxide, silica, polypropylene resin and polyethylene resin. , Styrene resin, acrylic-styrene resin, urea-formalin resin, melamine-
Organic pigments such as formalin resin and benzoguanamine resin can be used alone or in combination.

From the viewpoint of relatively low cost, there is also a method of laminating polyethylene on a substrate (hereinafter also referred to as polylaminate). This method is useful for preventing the release agent coating liquid from seeping into the substrate, but it is useful for adhesive tapes (adhesive labels).
This is not preferable when the adhesive tape is adhered to an adherend such as a cardboard and recycled with the adhesive tape (adhesive label) attached.

The release layer of the adhesive label has a contact angle of 35.
に な る 60 degrees. By the way, the contact angle of the release layer is 3
If it is less than 5 degrees, the ink transferability is improved, but the releasability of the pressure-sensitive adhesive layer from the pressure-sensitive adhesive layer is impaired. For example, it is possible to issue a label printed by a thermal transfer printing method while rewinding a pressure-sensitive adhesive tape without using release paper. On the other hand, when the temperature exceeds 60 degrees, the peelability of the pressure-sensitive adhesive layer is improved (easy to peel), but the ink transferability is impaired. Is not preferable because the ink may not be transferred to the release layer of the ink.

The release layer is not particularly limited as long as the contact angle is 35 to 60 degrees, but in order to improve the transferability of the ink by the thermal transfer method, the release layer has a melting point of 60 to 120 ° C. The release layer having the above melting point is preferably a long-chain alkyl carbamate-based resin obtained by reacting (a) a partially or completely saponified vinyl acetate (co) polymer with (b) an alkyl isocyanate. It is preferable to form a release layer containing a release agent as a main component. By the way, when the melting point is less than 60 ° C., although the ink transferability is improved, the peeling layer is easily melted by the heat of the printing machine, and in some cases, the peeling property with the pressure-sensitive adhesive layer is lost. In order to transfer ink, printing must be performed with high energy (high transfer temperature, low speed), which is not preferable. Incidentally, the melting point can be measured by DSC (differential thermal scanning calorimeter) [manufactured by Seiko Denshi Kogyo Co., Ltd., DSC22 (or a measuring device having an equivalent function)]. Approximately 10m as a measurement condition
g from 0 ° C. to 150 ° C. (heating rate: 5 ° C./mi)
n), and the melting point was determined from the melting peak of the sample.

When the above-mentioned long-chain alkyl carbamate-based release agent is used as the release layer, the component (a) may be, for example, a vinyl acetate polymer, a vinyl acetate-ethylene copolymer, or a vinyl acetate-acrylic acid copolymer. Examples thereof include partially or completely saponified polymers, and the partially or completely saponified (co) polymers can be used alone or in combination of two or more.

The component (b) has an isocyanate group and reacts with the isocyanate group and the hydroxyl group of the partially or completely saponified vinyl acetate (co) polymer. Examples thereof include hexyl isocyanate and octyl. One or more selected from isocyanate, dodecyl isocyanate, octadecyl isocyanate, docosanyl isocyanate, and the like can be used in combination, but the releasability from the pressure-sensitive adhesive layer, the reactivity with the hydroxyl group of the component (a), the ink It is preferable to use octadecyl isocyanate from the viewpoint of thermal transfer property by the method.

The adhesive label of the present invention has a melting point of 60.
It is formed by printing an ink having a resin temperature of up to 120 ° C. The resin functions as a binder and is transferred by heat from an ink ribbon to a target adherend together with a colorant (color is not particularly limited) such as carbon, iron oxide, calcium oxide, and silica. . Incidentally, when an ink consisting of only the resin and / or wax having the above melting point of less than 60 ° C. is used, although the ink transferability to the release layer is improved, the abrasion resistance of the printing surface of the pressure-sensitive adhesive label is reduced. When the barcode printing surface of the adhesive label is rubbed, the printed part becomes dirty or overlapped, so that the barcode information can not be read, or the printed ink easily falls off, which is not preferable. . On the other hand, when an ink composed of only a resin and / or a wax having a temperature exceeding 120 ° C. is used, the abrasion resistance of the recorded image on the pressure-sensitive adhesive label printing surface is improved, but the ink transferability is reduced, and high energy (high transfer temperature) is obtained. , Low speed), which is not preferable. However, to explain in more detail, it is presumed that the above-mentioned abrasion resistance is related not only to the melting point of a component such as a resin acting as a binder for the ink, but also to the difference in cohesiveness due to the type and molecular weight of the component. . The melting point of the resin or wax in these ink ribbons can also be measured under the same conditions using the above-mentioned DSC (differential thermal scanning calorimeter) [manufactured by Seiko Denshi Kogyo Co., Ltd., DSC22], and when there are two or more melting peaks. Determined the melting point of each.

In the present invention, the pressure-sensitive adhesive label is preferably issued using a pressure-sensitive adhesive tape which does not require a release paper. For this purpose, JIS-Z-0 of the pressure-sensitive adhesive layer and the release layer is preferably used.
Adhesive strength according to 237 (180 ° peeling method) is 5
It is preferably 80 N / m. By the way, the adhesive strength is 5
If the adhesive tape is less than N / m, the tape may be unnecessarily unwound when the adhesive tape is rewound. On the other hand, if the adhesive strength exceeds 80 N / m, the tape cannot be passed through a thermal transfer printing machine smoothly or the adhesive strength is high. In such a case, it may be difficult to rewind the adhesive tape, which is not preferable.

The release layer of the pressure-sensitive adhesive label may be provided using a release agent emulsified by adding an emulsifier, a surfactant or the like, or may be provided using a release agent dissolved in a solvent. A release agent is appropriately applied to the substrate and dried. The thickness of the release layer is preferably adjusted to be 0.1 to 10 μm, more preferably 0.2 to 5 μm. When the film thickness is less than 0.1 μm, uniform peeling performance between the adhesive tape and the peeling layer may not be obtained, and when the peeling force (adhesive force) becomes high, it becomes difficult to rewind the adhesive tape. On the other hand, when the thickness exceeds 10 μm, it is not preferable because the ink is not easily transferred by the thermal transfer printing machine, or the cost and the cost are increased.

The method of applying the release agent is not particularly limited, and examples thereof include a gravure direct method, a gravure reverse method, a bar or rod coating method, and a roll coating method. The temperature at which the release agent solution is dried varies depending on the amount of coating, the length of the drying device and the air flow.
~ 180 ° C is desirable.

The kind of the pressure-sensitive adhesive is not particularly limited, but it is preferable to use an acrylic pressure-sensitive adhesive which is easy to peel off from the release agent layer or which has excellent stability over time. Ethyl acrylate (EA), butyl acrylate (BA) as main monomers, 2
-Ethylhexyl acrylate (2-EHA), vinyl acetate (VAc), acrylonitrile (AN), styrene (St), methyl methacrylate (MMA), methyl acrylate (MA) as a comonomer, methacrylic acid (MAA) as a functional group-containing monomer, Acrylic acid (AA), itaconic acid (IA), hydroxyethyl methacrylate (HEMA), hydroxypropyl methacrylate (HPMA), dimethylaminoethyl methacrylate (DM), acrylamide (AM), methylol acrylamide (N-MAN), glycidyl Examples include those containing methacrylate (GMA), maleic anhydride, or the like as a main component (preferably 80% by mass or more). If necessary, a tackifier, an ultraviolet absorber, a crosslinking agent,
Additives such as pigments and antioxidants are blended.

The amount of the pressure-sensitive adhesive to be applied is appropriately selected depending on the type and thickness of the substrate to be used.
0 g / m ² is preferable, and more preferably 5 to 60 g / m ²
m ² . When the coating amount is less than 3 g / m ² , the adhesive strength when sticking the pressure-sensitive adhesive tape to another adherend may decrease, and when it exceeds 80 g / m ² , the anchoring property of the pressure-sensitive adhesive may decrease. In some cases, the adhesive may protrude from the end of the tape or the like, or the adhesive may remain on the adherend.

The coating method of the pressure-sensitive adhesive is not limited at all, and examples thereof include a comma coating method, a reverse coating method, a gravure coating method, a reverse gravure method, a kiss coating method, a knife coating method, a bar coating method and a process paper. And a transfer method of transferring a material coated by a method.
The embodiment of the pressure-sensitive adhesive tape of the present invention includes a release sheet generally used in this field (a substrate provided with a release layer).
(A laminate of a heat-transfer-printed pressure-sensitive adhesive label and a release sheet in the order of heat-transfer-printed release layer / substrate / pressure-sensitive adhesive layer / release sheet) is also included.

[0027]

EXAMPLES The present invention will be described in more detail with reference to the following examples, which, of course, are not intended to limit the present invention. In the Examples and Comparative Examples, "parts" and "%" indicate "parts by mass" and "% by mass" unless otherwise specified. <Preparation of adhesive label>

Examples 1-4, Comparative Examples 2 and 3 Cast paper (Oji Paper Co., Ltd., N mirror: JAPAN)
N TAPPI Paper pulp test method No. Emulsion-type long-chain alkyl carbamate obtained by reacting partially saponified polyvinyl acetate with octadecyl isocyanate on the glossy surface of the substrate, using a glossy surface smoothness of 3,200 seconds (the same applies to the following). -Based release agent (manufactured by Chukyo Yushi Co., Ltd., K-256: melting point 84 ° C., nonvolatile content about 20% by weight,
A release layer having a layer thickness of 0.5 μm and a contact angle of 54.2 ° obtained by coating and drying an average particle diameter of 0.5 μm ± 0.2) was provided.

Next, as an adhesive to be applied to the surface opposite to the surface provided with the release layer, an emulsion type acrylic adhesive (TS-1310, manufactured by Nippon Carbide Co., Ltd.) was used.
g / m ^2, and dried at room temperature on the release layer surface using an ink ribbon shown in Table 1 at room temperature.
ATAMAX barcode label printer [Pro
[Digi Plus Linerless] to obtain an adhesive label.

Example 5 As a release layer, a long-chain alkyl carbamate release agent obtained by reacting completely saponified polyvinyl acetate dissolved in toluene with octadecyl isocyanate (RA-585S, manufactured by Asio Sangyo Co., Ltd.) (Melting point: 102 ° C.) was applied and dried to obtain a self-adhesive label in the same manner as in Example 1 except that a release layer having a layer thickness of 0.5 μm and a contact angle of 46.2 ° was replaced with a release layer.

Example 6 As a release layer, a long-chain alkyl carbamate-based release agent obtained by reacting completely saponified polyvinyl acetate with octadecyl isocyanate (Ashio Sangyo Co., Ltd., RA-
585S: melting point: 102 ° C.) 95 parts, urethane-based resin (manufactured by Nippon Carbide Co., Ltd., R4500: melting point: 46 ° C.) 5 parts dissolved in toluene, applied and dried to obtain a layer thickness of 0 A heat-sensitive transfer printing was performed in the same manner as in Example 1 except that the release layer was replaced with a release layer having a contact angle of 0.5 μm and a contact angle of 37.8 ° to obtain an adhesive label.

COMPARATIVE EXAMPLE 1 Cast paper (manufactured by Oji Paper Co., Ltd., N mirror: glossy surface smoothness: 3200 seconds) was used as a base material, and the glossy surface had an average particle diameter of 4.0.
μm spherical particles (Nippon Shokubai Co., Ltd., Eposter M30) 5
0 parts, 50 parts of amorphous silica having an average particle diameter of 2.5 μm (Fine Seal X-37B, manufactured by Tokuyama Corporation), 27% aqueous emulsion of a polyamine-based cationic resin (Sanfix PAC-7, manufactured by Sanyo Chemical Co., Ltd.) 20 parts, 300 parts of a 10% aqueous solution of carboxy-modified polyvinyl alcohol (Gosenal T-350, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), 38% aqueous emulsion of styrene-acrylic copolymer (cationic) (manufactured by Sumitomo Chemical Co., Ltd., S −3911) 80
And 375 parts of water were added thereto, and a sufficiently dispersed coating solution was applied by hand coating using a Meyer bar and dried to form a receiving layer having a layer thickness of 10 μm and a contact angle of 18.2 °. Thermal transfer printing was performed using the same material and method as in Example 1 to obtain an adhesive label.

Comparative Example 4 Freeness of each substrate was 200 ml · CSF
(Canada Standard Freeness) LBKP 20% and NBKP
A pulp slurry mixed with 80% is made of glassine paper having a basis weight of 73 g / m ² so that the jet / wire ratio becomes 1.03, and then polyvinyl alcohol (manufactured by Kuraray Co., Ltd., PVA-105) is used as a sealing layer on one surface. ) Is 1.0
g / m ² , and super-calendered so that the substrate smoothness (surface on which the filler layer is provided) is 1400 seconds. Solvent-free emulsion silicone (Shin-Etsu Chemical Co., Ltd.) X52-195) 100
The catalyst (Shin-Etsu Chemical Co., Ltd., C
AT-PM-10A) was added in an amount of 5 parts, and the solid content was 1.0 g / m2.
² so as coated and dried on the substrate, the contact angle 63.8
The same materials as in Example 1 except that a release layer was formed
Adhesive labels were obtained by thermal transfer printing according to the method.

<Preparation and Evaluation of Adhesive Label from Adhesive Tape without Release Paper> An adhesive tape made of the same material and composition as the base material, release layer and adhesive described in Examples 1 to 5 was machine-coated. Prepared and the adhesive tape
AX barcode label printer [Prodigy
When a bar code is printed on the release layer surface of the adhesive tape while automatically unwinding with a Plus Linerless], the adhesive label can be easily issued with good rewinding property, and the release layer of the adhesive label is It had peelability, good ink transferability, and good scratch resistance of the ink.

With respect to Comparative Example 1, an adhesive tape was prepared and evaluated in the same manner as described above, but the adhesive tape could not be rewound with a printer, and no adhesive label could be issued.

The adhesive labels obtained in Examples 1 to 5 and Comparative Examples 1 to 4 were each evaluated for physical properties by the following methods, and the results are shown in Table 2.

<Printability> DAT as a thermal transfer printer
AMAX barcode label printer [Prodi
gy Plus Linerless] and Table-1
The following evaluation was performed on the printability of each pressure-sensitive adhesive label when thermal transfer printing was performed using each of the ink ribbons indicated by.

(A) Ink transferability A: The ink transferability during printing is clear. ；: The transferability of the ink during printing is slightly blurred, or there is a portion where the ink is transferred (ink stain) to a slightly unintended place, but it is almost clear. Δ: The transferability of the ink at the time of printing is slightly blurred, or there is a portion where the ink is transferred to an unintended location (ink stain), which is somewhat unclear (the practically usable limit). X: The transferability of the ink at the time of printing is faint, or there is a portion where the ink is transferred to an unintended location (ink stain), and the transferability is unclear (practically unusable). XX: Ink is not transferred during printing.

(B) Abrasion resistance of ink Using a dye fastness tester (FR-2, manufactured by Suga Test Instruments Co., Ltd.), apply an eraser to the printing surface of the adhesive label, and apply a maximum of 50 times at 500 g weight (constant). The number of times until a change such as ink fading, ink smearing, and ink dropping on the printing surface when reciprocating was recorded was recorded, and evaluated based on the following criteria. ：: Ink fading, ink smear,
There is no ink drop. Δ: No ink fading, no ink smearing, no ink dropping even after reciprocating 30 times or more (less than 40 times) (limit of practical use). ×: Any of ink fading, ink smearing, and ink dropping occurs less than 30 times.

<Adhesive Strength> JIS-Z-0237 (180
30 minutes after adhering the pressure-sensitive adhesive layer surface of the pressure-sensitive adhesive tape to the recording layer surface in accordance with
The adhesive strength at 180 ° peeling was measured at a speed of / min.

<Residual Adhesion Ratio> An adhesive tape (Nitto Polyester Tape 31B, manufactured by Nitto Denko Corporation) is adhered to the release layer surface of the adhesive label, and is adhered with a rubber roll.
After leaving it at 70 ° C. for 20 hours while applying a load of 25 g / cm ^2, the adhesive tape was peeled off from the release layer surface, left at room temperature for 1 hour or more, and then stuck to the polished surface of a stainless steel plate, and 0.3 m / cm ² Adhesive force (A) when peeled 180 ° per minute and an adhesive tape (manufactured by Nitto Denko Corporation,
The polyester tape 31B) is adhered and adhered with a rubber roll, and then left at 70 ° C. for 20 hours while applying a load of 25 g / m ² , and then the adhesive tape is peeled off from the release layer surface, and at room temperature for 1 hour or more. After standing, affixed to the polished surface of the stainless steel plate,
The adhesive strength (B) when peeled at 0 ° was measured, and the ratio of (A) to (B), (A / B) × 100 = residual adhesion rate (%)
Asked.

[0042]

[Table 1]

[0043]

[Table 2]

As is clear from Table 2, the pressure-sensitive adhesive labels having the constitution of the present invention as in Examples 1 to 6 were excellent in the peelability to the pressure-sensitive adhesive, the ink transferability, and the scratch resistance. In addition, the ink transfer property to the release layer of the pressure-sensitive adhesive label issued by heat transfer printing while rewinding a pressure-sensitive adhesive tape without a release paper made of the same material and composition as the base material, release layer, and pressure-sensitive adhesive of the pressure-sensitive adhesive label. And the scratch resistance was good.

On the other hand, in Comparative Example 1, although the ink transferability and the scratch resistance were good, the adhesive was stuck and peeled, but it was not easily peeled, and if it was forcibly peeled, the paper was torn. Was. In Comparative Example 2, the ink transferability by the thermal transfer printing is slightly stained with the ink, and is inferior to the abrasion resistance.
In Comparative Example 3, the ink transferability by thermal transfer printing was poor, and in Comparative Example 4, no ink was transferred.

[0046]

According to the present invention, it is possible to provide a pressure-sensitive adhesive label which is excellent in ink transferability and abrasion resistance and has a releasability from a pressure-sensitive adhesive. Can be issued while rewinding, eliminating the need for wasted release paper.
An environmentally friendly adhesive label can be provided. As a further application example, if an adhesive label using a disintegrating adhesive is used, it becomes possible to recycle a cardboard or the like to which the adhesive label is attached as it is.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B41M 5/26 F

Claims (6)

[Claims] 1. A release layer having a contact angle (measured after 60 seconds with a drop amount of 5 μl using a solution having a mass ratio of water to ethanol of 1: 1) on one side of a substrate is in the range of 35 to 60 °. Have
Adhesion characterized by being printed by a thermal transfer printing method using an ink containing a resin having a melting point of at least 60 to 120 ° C. on the release layer of a label substrate having an adhesive layer on the other surface of the substrate. label. 2. The pressure-sensitive adhesive label according to claim 1, wherein the release layer has a melting point of 60 to 120 ° C. 3. The release layer comprises a long-chain alkyl carbamate release agent obtained by reacting (a) a partially or completely saponified vinyl acetate (co) polymer with (b) an alkyl isocyanate. 3. The pressure-sensitive adhesive label according to claim 1, which is a component. 4. The pressure-sensitive adhesive label according to claim 1, wherein the alkyl isocyanate is octadecyl isocyanate. 5. The adhesive label according to claim 1, wherein printing is performed by a thermal transfer printing method while rewinding an adhesive tape having no release paper. 6. JIS-Z-023 of pressure-sensitive adhesive layer and recording layer
Adhesive force according to 7 (180 ° peeling method) is 5 to 80
The pressure-sensitive adhesive label according to any one of claims 1 to 5, wherein the pressure-sensitive adhesive label is N / m.