JP2001353964A - Heat sensitive color developing recording label - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a heat sensitive color developing recording label, the underlayer of which can be seen through a transparent and/or a semitransparent portion thereof even under the state being utilized as the large sized label and which can be scanned even when a bar code or the like is displayed by developing color under heat on the surface thereof after the color of a heat sensitive color developing layer is developed under heat. SOLUTION: The heat sensitive color developing recording label 10 includes a base material 12, at least some part of which is transparent, a heat sensitive color developing layer 14, which is formed on the surface of the base material 12, and a clarifying layer 16, which formed on the heat sensitive color developing layer 14, has permeability to the layer 14 and turns the heat sensitive color developing layer 14 transparent and/or semitransparent and an adhesive layer 20, which is formed on the rear side of the base material 12 and at least some part of which is transparent and/or semitransparent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermosensitive color recording label, and more particularly to a label which can be seen from the surface of a large label to the bottom, for example, from above a label attached to a packaging film of the pack. A thermosensitive coloring recording label suitable for use as a barcode label.

[0002]

2. Description of the Related Art A conventional thermosensitive coloring label is a thermosensitive coloring layer formed by thermosensitive coloring from the surface. For example, the thermosensitive coloring label is displayed by thermosensitive coloring recording of a bar code or the like. It is used as if pasted.

[0003]

However, in this conventional thermosensitive coloring recording label, for example, in the case of a label affixed to a perishable food pack, a lot of information such as seasonings, raw materials, manufacturers, expiration dates, etc. is stored. Need to be displayed.
However, in order to display a lot of information, the size of the label becomes large, but if the label is opaque, the contents of the label become invisible and the purchaser at the time of purchase cannot purchase while checking the contents such as freshness. .

[0004] Therefore, the main object of the present invention is to make it possible to see the lower layer from the transparent and / or translucent portion even when used as a large-sized label, and to make the surface of the heat-sensitive coloring layer develop heat-sensitive color. It is now possible to scan even if a bar code etc. is displayed with thermal coloring.
The purpose is to obtain a thermosensitive coloring record label.

[0005]

According to a first aspect of the present invention, there is provided a thermosensitive color recording label, wherein at least a part of the label has transparency, a thermosensitive coloring layer formed on the surface of the base, and a surface of the thermosensitive coloring layer. A transparentizing layer having transparency to and / or translucency in the heat-sensitive coloring layer by penetrating the heat-sensitive coloring layer; and a transparent and / or semi-transparent layer formed on the back surface of the substrate. And a heat-sensitive coloring label comprising a transparent adhesive layer. The thermosensitive coloring recording label according to claim 2 is the thermosensitive coloring recording label according to claim 1, wherein the transparent layer includes a silicone resin. The thermosensitive coloring recording label according to claim 3 is the thermosensitive coloring recording label according to claim 1, wherein the transparentizing layer contains a UV or EB-curable silicone resin. The thermosensitive coloring recording label according to claim 4, wherein the base material is made of a transparent film or sheet or a film or sheet-like material, and the adhesive layer is formed by applying a removable adhesive. Is a thermosensitive coloring record label.
The thermosensitive coloring recording label according to claim 5 is provided on the surface of the substrate and / or
5. The thermosensitive color recording label according to claim 1, wherein a concealing layer is formed on at least a part of the back surface. The heat-sensitive coloring recording label according to claim 6 is the heat-sensitive coloring recording label according to claim 5, wherein the hiding layer is formed by applying a binder containing aluminum powder. The thermosensitive coloring recording label according to claim 7 is the thermosensitive coloring recording label according to claim 5, wherein the hiding layer is formed by applying a binder containing titanium white. The heat-sensitive coloring recording label according to claim 8 is the heat-sensitive coloring recording label according to claim 5, wherein the concealing layer includes an evaporation layer.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments of the present invention with reference to the drawings.

[0007]

FIG. 1 is a schematic sectional view of a thermosensitive coloring recording label according to an embodiment of the present invention.

In this thermosensitive coloring recording label 10, a thermosensitive coloring layer 14 is formed on the surface of a square transparent or translucent base material 12, and the thermosensitive coloring layer 1 is formed on the surface of the thermosensitive coloring layer 14.
4, a transparent layer 16 is formed which has transparency and makes the heat-sensitive coloring layer 14 transparent and / or translucent, and information obtained by coloring the heat-sensitive coloring layer 14 on the back surface of the heat-sensitive coloring layer 14, for example, A concealing layer 18 is formed so that a bar code can be scanned, and an adhesive layer 20 for bonding the thermosensitive coloring recording label 10 to an article is formed on the back surface of the base 12. On the surface of the adhesive layer 20, a release sheet 22 for protecting the adhesive layer 20 and supporting the thermosensitive recording label 10 is temporarily attached. On the surface of the thermosensitive coloring layer 14, a transparent or translucent overcoat layer 24 is formed. Hiding layer 18
Is formed on a part of the base material 12 at a portion where the thermosensitive coloring layer 14 needs to be colored and scanned by a scanner.

The substrate 12 is made of a transparent film or sheet of polyethylene or the like or a film or sheet.

The substrate 12 is a transparent support, and preferably has a refractive index at room temperature in the range of 1.45 to 1.60. For example, there are polyester films such as polyethylene terephthalate and polybutylene terephthalate, films of cellulose derivatives such as cellulose triacetate film, polystyrene films, polypropylene films, and films of polyolefins such as polyethylene. It is common.

As the substrate 12 of the heat-sensitive recording material of the present invention, both a transparent support and a translucent support such as paper may be used depending on the purpose and application. One of the objects of the present invention is the transparent support. In order to obtain a suitable heat-sensitive recording material, a transparent support is selected. By providing a thermosensitive coloring layer that develops different colors on the surface of the transparent support, multicoloring can be facilitated. The thickness of the transparent support is from 20 to 200 μm, and preferably from 50 to 100 μm. It is necessary to select a material having transparency as a material selected from these.

The thermosensitive coloring layer 14 is formed by coating a known thermosensitive recording agent. That is, in order to form the thermosensitive coloring layer 14, the thermosensitive coloring layer 14 is formed by applying a solution containing a coloring agent, a developing agent, a binder, and the like to the surface of the substrate 12 and drying the solution. The thermosensitive coloring layer 1
The mixture used as the material of No. 4 may include additives such as pigments, waxes, and antifoaming agents, if necessary, a coloring agent for coloring the heat-sensitive coloring layer 14 arbitrarily, and the sensitivity of the heat-sensitive coloring layer 14 to heat. And a stabilizer for improving the storage stability may be added. Further, the thermosensitive coloring layer 14
The mixture used as the material of the above may be added with a crosslinking agent for crosslinking the binder in the mixture, a lubricant, and the like.

As the color former, a known colorless or pale leuco dye or the like is used. For example, (1) 3,3-bis (p-dimethylaminophenyl)
-6-dimethylaminophthalide, 3- (p-dimethylaminophenyl) -3- (2-phenyl-3-indolyl) phthalide, 3- (p-dimethylaminophenyl)-
3- (1,2-dimethyl-3-indolyl) phthalide,
3,3-bis (9-ethyl-3-carbazolyl) -5-
Triarylmethane compounds such as dimethylaminophthalide and 3,3-bis (2-phenyl-3-indolyl) -5-dimethylaminophthalide; (2) 4,4-bis (dimethylamino) benzhydrin benzyl Diphenylmethane compounds such as ether and N-2,4,5-trichlorophenylleuco auramine; (3) rhodamine-β-anilinolactam, 3- (N
-Methyl-N-cyclohexylamino) -6-methyl-
7-anilinofluoran, 3-diethylamino-7-octylaminofluoran, 3-diethylamino-7-
(2-chloroanilino) fluoran, 3-diethylamino-6-methyl-7-anilinofluoran, 3-diethylamino-6-methyl-7- (2,4-dimethylanilino) fluoran, 3-diethylamino-7-di Benzylaminofluoran, 3-diethylamino-6-chloro-
7- (β-ethoxyethylamino) fluoran, 3-diethylamino-6-chloro-7- (γ-chloropropylamino) fluoran, 3- (N-ethyl-N-isoamylamino) -6-methyl-7-ani Linofluoran, 3
-(N-ethyl-N-ethoxyethylamino) -6-methyl-7-anilinofluoran, 3- (N-ethyl-N
-Tetrahydrofurfurylamino) -6-methyl-7-
Anilinofluoran, 3- (N-ethyl-N-tolylamino) -6-methyl-7-anilinofluoran, 3-dibutylamino-6-methyl-7-anilinofluoran,
3-dibutylamino-7- (2-chloroanilino) fluoran, 3-dipentylamino-6-methyl-7-anilinofluoran, 3-piperidino-6-methyl-7-anilinofluoran, 3- (4- Anilino) Anilino-6
Xanthene compounds such as -methyl-7-chlorofluorane; (4) thiazine compounds such as benzoylleucomethylene ble-, p-nitrobenzoyl leucomethylene ble; and (5) 3-methylspirodinaphthopyran, 3- Spiro compounds such as ethylspirodinaphthopyran, 3-benzylspirodinaphthopyran, and 3-methylnaphtho- (3-methoxybenzo) spiropyran; (6) other 3,5 ′, 6-tris (dimethylamino) -spiro [9H-fluorene-9,1 '(3'H)
-Isobenzofuran] -3'-one, 1,1-bis [2
-(4-dimethylaminophenyl) -2- (4-methoxyphenyl) ethenyl] -4,5,6,7-tetrachloro (3H) isobenzofuran-3-one and the like. Alternatively, two or more kinds can be used as a mixture.

Examples of the color developing agent include: (1) p-octylphenol, p-tert-butylphenol, p-phenylphenol, p-hydroxyacetophenone, α-naphthol, β-naphthol, p-phtanol Trioctylcatechol, 2,2'-dihydroxybiphenyl, bisphenol-A, 1,1-bis (p-hydroxyphenyl) butane, 2,2-bis (4-hydroxyphenyl) heptane, 2,2-bis- (3 -Methyl-4
-Hydroxyphenyl) propane, 2,2-bis (3,
5-dimethyl-4-hydroxyphenyl) propane,
2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) sulfone, bis (3-allyl-4-hydroxyphenyl) sulfone, bis (3,4-dihydroxyphenyl) Sulfone, 2,4'-dihydroxyphenyl sulfone, 1,1
-Bis (4-hydroxyphenyl) cyclohexane, bis (4-hydroxyphenyl) ether, bis [2-
(4-hydroxyphenylthio) ethoxy] methane, 4
-(4-Isopropoxybenzenesulfonyl) pheno-
Phenols such as dimethyl 4-hydroxyphthalate, butyl bis (4-hydroxyphenyl) acetate, benzyl p-hydroxybenzoate and 3,5-ditert-butylsalicylic acid; (2) organic carboxylic acids such as benzoic acid (3) a metal type such as zinc salicylate; (4) an anilide derivative type such as 2,4-dihydroxy-N-2'-methoxybenzanilide; Species or a mixture of two or more can be used.

Examples of the binder include acrylic emulsion, polyvinyl alcohol, methylcellulose, methoxycellulose, hydroxyethylcellulose, carboxymethylcellulose, starch, polyvinylpyrrolidone, acrylate, polyacrylamide polymer, styrene-maleic anhydride. A copolymer, a vinyl acetate-maleic anhydride copolymer, a styrene-butadiene copolymer or a modified product thereof can be selected.

[0016] Examples of the filler include aluminum hydroxide, heavy calcium carbonate, light calcium carbonate, titanium oxide, barium sulfate, silica gel, activated clay, talc, clay, kaolinite, diatomaceous earth, magnesium carbonate, and alumina. For example, inorganic materials such as aluminum oxide and organic materials such as polystyrene resin particles, urea-formalin resin particles, and polyolefin particles can be selected.

Examples of the sensitizer include (1) zinc acetate, zinc octylate, zinc laurate,
Zinc stearate, zinc oleate, zinc behenate,
Metal salts of organic acids such as zinc benzoate, zinc salt of salicylic acid dodecyl ester, calcium stearate, magnesium stearate, aluminum stearate; Amide compounds such as amide, ethylenebisstearic acid amide, hexamethylenebisoctylic acid amide; (3) 1,2-bis (3,4-dimethylphenyl) ethane, m-terphenyl, 1,2-diphenoxyethane, 1,2-bis (3-methylphenoxy) ethane, p
-Benzylbiphenyl, p-benzyloxybiphenyl,
Diphenyl carbonate, bis (4-methylphenyl)
Carbonate, dibenzyl oxalate, bis (4-methylbenzyl) oxalate, bis (4-chlorobenzyl) oxalate, phenyl 1-hydroxy-2-naphthalenecarboxylate, benzyl 1-hydroxy-2-naphthalenecarboxylate, 3- Phenyl hydroxy-2-naphthalenecarboxylate, methylenedibenzoate, 1,4-
Bis (2-vinyloxyethoxy) benzene, 2-benzyloxynaphthalene, 4-benzyloxybenzoyl benzyl, dimethyl phthalate, dibenzyl terephthalate, dibenzoylmethane, 4-methylphenoxy-p-biphenyl, and the like. The sensitizers can be used alone or in combination of two or more.

As the storage stabilizer, for example,
1,1,3-tris (2-methyl-4hydroxy-5-
Tert-butylphenyl) butane, 1,1,3-tris (2
-Methyl-4-hydroxy-5-cyclohexylphenyl) butane, 4,4'-butylidenebis (2-tert-butyl-5-methylphenol), 4,4'-thiobis (2
-Tert-butyl-5-methylphenol), 2,2'-thiobis (6-tert-butyl-4-methylphenol),
Hindered phenol compounds such as 2,2'-methylenebis (6-tert-butyl-4-methylphenol);
Benzyloxy-4 '-(2-methylglycidyloxy) diphenylsulfone, sodium-2,2'-methylenebis (4,6-di-tert-butylphenyl) phosphate and the like. 2
A mixture of more than one species can be used.

The transparent layer 16 contains a resin having a suitable viscosity and a suitable viscosity, such as a silicone resin, a UV or EB-curable silicone resin, so as to fill the air layer of the thermosensitive coloring layer 14. A clarifying agent having low activity is applied to the surface of the thermosensitive coloring layer 14. This applied clarifying agent is an electron beam-curable or ultraviolet-curable resin,
Cured by irradiation with an electron beam or ultraviolet rays.

The hiding layer 18 is formed by coating a mixture of titanium white or aluminum powder in a binder. The concealing layer 18 is not a single layer. To enhance concealing properties, for example, a mixture of titanium white in a binder is first applied to the surface of the heat-sensitive coloring layer 14, and then aluminum powder is further bonded to the surface. It may be formed to have a two-layer structure coated with a mixture mixed in the adhesive or more layers.

The following can be selected as the binder. Oxidized starch, starches such as ester value starch, cellulose derivatives such as carboxymethylcellulose and hydroxyethylethylcellulose, polyvinyl alcohol and its derivatives, polyvinylpyrrolidone, casein, gelatin, soy protein, styrene-acrylic resin and its derivatives, styrene butadiene latex,
Acrylic emulsion, vinyl acetate emulsion, vinyl chloride emulsion, urethane emulsion, urea emulsion, alkyd emulsion and derivatives thereof.

The concealing layer 18 may be constituted by, for example, an aluminum vapor-deposited layer. It is to be noted that it is more appropriate to form an aluminum deposition layer by forming a base layer on the lower layer of the aluminum deposition layer, that is, the surface of the base material 12 and then performing aluminum vacuum deposition to perform the aluminum deposition more appropriately.
The underlayer may be formed by selecting and coating one or more of the above binders. In some cases, additives such as a filler and a crosslinking agent may be used in combination with the binder forming the underlayer, but the invention is not limited thereto.

In order to protect the thermosensitive coloring layer 14 and prevent sticking, the overcoat layer 24 may be formed by coating an overcoating agent in which a binder, a filler and a lubricant are mixed. Overcoat layer 24
In order to make the binder suitable for preventing sticking and the like, a filler having an oil absorption of 10 ml / 100 g or more, preferably 30 ml / 100 g or more is filled at 10% or more, preferably 30% or more, and sticking and There is a method of forming by coating an overcoating agent to which a lubricant is added to prevent pressure coloring. The overcoat agent includes a crosslinking agent, a dispersant, an antifoaming agent, a water resistance agent,
Various additives such as a coloring agent may be added. The coating amount is 0.1 to 10 g / m ² , preferably 0.5 to 6 g
/ M ² .

As the binder, for example, one or more of the following can be selected and used, but the present invention is not limited thereto. Polyvinyl alcohol, cellulose, methylcellulose, starch and derivatives thereof, casein, polyacryl emulsion, polyacrylate, polyurethane, styrene / butadiene copolymer,
Water-soluble resins and water-soluble emulsion resins such as styrene / maleic anhydride copolymer and styrene / acrylic acid copolymer.

As the filler, an oil absorption of 10 ml / 100
g or more, preferably 30 ml / 100 g or more, and one or more of the following can be selected and used, but is not limited thereto. Calcium carbonate, magnesium carbonate, magnesium oxide, silica, white carbon, talc, clay, kaolin, alumina, magnesium hydroxide, aluminum hydroxide, aluminum oxide, barium sulfate, titanium oxide, polystyrene resin, urea-formalin resin.

As the lubricant, one or more of the following can be selected and used, but it is not limited thereto. Zinc stearate, calcium stearate, polyethylene wax, paraffin wax, carnauba wax, ester wax.

The adhesive layer 20 is formed by applying a pressure-sensitive adhesive mainly composed of synthetic resin such as synthetic rubber or acrylate copolymer. However, an appropriate adhesive may be selected, and the adhesive need not necessarily be an adhesive, as long as it has transparency and can adhere this thermosensitive coloring recording label 10 to another object. Alternatively, a material that can be bonded to another material, such as another adhesive or a double-sided adhesive tape, may be selected.

The release sheet 22 may be formed by applying a release agent such as silicon to the surface of paper.

The heat-sensitive coloring recording label 10 is actually formed as a flat rectangular label, and is used as temporarily attached to the release sheet 22 at appropriate intervals. This is convenient when, for example, it is to be attached to a packaging film of a product or a product pack.
In the case where the heat-sensitive coloring layer 14 is subjected to heat-sensitive coloring, the heat-sensitive coloring may be performed by using a heat-sensitive coloring recording device that performs heat-sensitive coloring with a thermal head from the surface of the overcoat layer 24.

Example 1 The following thermosensitive recording agent was applied to a polyethylene film constituting a substrate and dried to form a transparent thermosensitive coloring layer. Thermal recording agent: The following materials are ball milled with a particle size of 0.8 μm
1,2-di (m-methylphenoxy) ethane 20 parts Bis (3-allyl-4-hydroxyphenyl) sulfone 20 parts 3-Diethylamino-6-methyl-7-anilinofluoran 10 parts 3% Polyvinyl alcohol 220 parts Polyethylene wax 10 parts Calcium carbonate 28 parts Methyl cellulose 7 parts Next, the following UV-curable silicone resin is applied to the surface of the thermosensitive coloring layer, and dried by irradiating ultraviolet rays with an ultraviolet irradiation device. Then, the heat-sensitive coloring layer was made transparent. UV curable silicone resin 100 parts Photoinitiator 3 parts The concealment layer was prepared by mixing the following materials in the following amounts with a disper (stirring blade) at 5 g / m ² and dried to form the concealment layer. Formed. After that, when the bar code was thermally colored on the thermosensitive coloring layer, the information on the thermosensitive coloring layer could also be viewed from the surface using a scanner (SYMBOL TEC).
H.ING., LASERCHEK II). (Material) (Chemical name or popular name) (Solid content mixing ratio) Binder: Vinyl acetate emulsion 40 Lubricant: Polyethylene wax emulsion 15 (Product name: W-300 manufactured by Mitsui Chemicals) Hiding agent: Aqueous aluminum paste 45

Example 2 The following heat-sensitive recording agent was applied to a polyethylene film constituting a substrate and dried to form a transparent heat-sensitive coloring layer. Thermal recording agent: The following materials are ball milled with a particle size of 0.8 μm
1,2-di (m-methylphenoxy) ethane 20 parts Bis (3-allyl-4-hydroxyphenyl) sulfone 20 parts 3-Diethylamino-6-methyl-7-anilinofluoran 10 parts 3% Polyvinyl alcohol 220 parts Polyethylene wax 10 parts Calcium carbonate 28 parts Methyl cellulose 7 parts Next, the following UV-curable silicone resin is applied to the surface of the thermosensitive coloring layer, and dried by irradiating ultraviolet rays with an ultraviolet irradiation device. Then, the heat-sensitive coloring layer was made transparent. UV curable silicone resin 100 parts Photoinitiator 3 parts The hiding layer was prepared by mixing the following materials in the following amounts with a disper (stirring blade) at 6 g / m ² and dried to form the hiding layer. Formed. After that, when the bar code was thermally colored on the thermosensitive coloring layer, the information on the thermosensitive coloring layer could also be viewed from the surface using a scanner (SYMBOL TEC).
H.ING., LASERCHEK II). (Material) (Chemical name or common name) (Solid content mixing ratio) Binder: Acrylic emulsion 40 Hiding agent: Titanium white 60 (Trade name: Teica JR-600A)

Example 3 The following thermosensitive recording agent was applied to a polyethylene film constituting a substrate and dried to form a transparent thermosensitive coloring layer. Thermal recording agent: The following materials are ball milled with a particle size of 0.8 μm
1,2-di (m-methylphenoxy) ethane 20 parts Bis (3-allyl-4-hydroxyphenyl) sulfone 20 parts 3-Diethylamino-6-methyl-7-anilinofluoran 10 parts 3% Polyvinyl alcohol 220 parts Polyethylene wax 10 parts Calcium carbonate 28 parts Methyl cellulose 7 parts Next, the following UV-curable silicone resin is applied to the surface of the thermosensitive coloring layer, and dried by irradiating ultraviolet rays with an ultraviolet irradiation device. Then, the heat-sensitive coloring layer was made transparent. UV curable silicone resin 100 parts Photoinitiator 3 parts Then, 3 g /
m ^{2 was} applied and dried. After that, vacuum evaporation of aluminum was performed to form a hidden layer. Further, 3 g / m ^{2 of an} overcoat agent prepared by mixing the following materials in the following amounts with a disper (stirring blade) was applied and dried to form an overcoat layer. After that, when the barcode was thermally colored on the thermosensitive coloring layer, the information of the thermosensitive coloring layer could be visually checked from the surface and the scanner (SYMBO).
L TECH.ING., LASERCHEK II). (Material) (Chemical name or popular name) (Blending amount) Binder: Acrylic emulsion 26.79% by weight (trade name: Bonron manufactured by Mitsui Toatsu) Crosslinking agent: Polyamide polyamine epichlorohydrin resin 3.21% by weight (trade name) Filler: silicon dioxide (oil absorption: 145 ml / 100 g) 50.00% by weight (trade name: Mizusukasil manufactured by Mizusawa Chemical) Lubricant: polyethylene wax 15.00% by weight Lubricant: paraffin 5.00% by weight of wax

Example 4 The following thermosensitive recording agent was applied to a polyethylene film constituting a substrate and dried to form a transparent thermosensitive coloring layer. Thermal recording agent: The following materials are ball milled with a particle size of 0.8 μm
1,2-di (m-methylphenoxy) ethane 20 parts Bis (3-allyl-4-hydroxyphenyl) sulfone 20 parts 3-Diethylamino-6-methyl-7-anilinofluoran 10 parts 3% Polyvinyl alcohol 220 parts Polyethylene wax 10 parts Calcium carbonate 28 parts Methyl cellulose 7 parts Next, the following UV-curable silicone resin is applied to the surface of the thermosensitive coloring layer, and dried by irradiating ultraviolet rays with an ultraviolet irradiation device. Then, the heat-sensitive coloring layer was made transparent. UV curable silicone resin 100 parts Photoinitiator 3 parts Then, 3 g /
m ^{2 was} applied and dried. Thereafter, aluminum vacuum evaporation was performed to form an aluminum evaporation layer. Further, 3 g / m ^{2 of an} overcoat agent prepared by mixing the following materials in the following amounts with a disper (stirring blade) was applied and dried to form an overcoat layer. After that, when the bar code was thermally colored on the thermosensitive coloring layer, the scanner (SYM
It was also possible to scan with BOL TECH.ING., LASERCHEK II). (Material) (Chemical name or popular name) (Blending amount) Binder: Acrylic emulsion 26.79% by weight (trade name: Bonron manufactured by Mitsui Toatsu) Crosslinking agent: Polyamide polyamine epichlorohydrin resin 3.21% by weight (trade name) Filler: talc (oil absorption: 40 ml / 100 g) 40.00% by weight Lubricant: polyethylene wax 30.00% by weight

[0034]

According to the present invention, at least a part of the base material has transparency, a thermosensitive coloring layer formed on the surface of the base material, and a thermosensitive coloring layer formed on the surface of the thermosensitive coloring layer. A transparentizing layer having transparency and / or making the thermosensitive coloring layer transparent and / or translucent; and an adhesive layer formed on the back surface of the base material and having at least a part thereof having transparency and / or translucency. Therefore, even when used as a large label, the lower layer can be seen from the transparent and / or translucent portion, and after the thermosensitive coloring layer is subjected to thermosensitive coloring, a barcode or the like is displayed on the surface with thermosensitive coloring. Thus, it is possible to obtain a thermosensitive coloring recording label which can be scanned even when scanning.

[Brief description of the drawings]

FIG. 1 is an illustrative sectional view of a thermosensitive color recording label according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an example of a method of using the thermosensitive coloring recording label shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Thermosensitive recording label 12 Substrate 14 Thermosensitive coloring layer 16 Transparency layer 18 Hiding layer 20 Adhesive layer 22 Release sheet 24 Overcoat layer

Claims (8)

[Claims] 1. A base material having at least a part of which is transparent; a thermosensitive coloring layer formed on the surface of the base material; and a thermosensitive coloring layer formed on the surface of the thermosensitive coloring layer, and having permeability to the thermosensitive coloring layer. A transparentizing layer having a transparent and / or translucent thermosensitive coloring layer, and an adhesive layer formed on the back surface of the base material and having at least a part thereof having transparency and / or translucency. ,
Thermal color recording label. 2. The transparentizing layer contains a silicone resin.
The thermosensitive coloring recording label according to claim 1. 3. The thermosensitive color recording label according to claim 1, wherein the transparentizing layer contains a UV or EB-curable silicone resin. 4. The thermosensitive color recording according to claim 1, wherein the base material is made of a transparent film or sheet or a film or a sheet, and the adhesive layer is formed by applying a removable adhesive. label. 5. The thermosensitive color recording label according to claim 1, wherein a concealing layer is formed on at least a part of the front surface and / or the back surface of the base material. 6. The thermosensitive color recording label according to claim 5, wherein the hiding layer is formed by applying a binder containing aluminum powder. 7. The thermosensitive color recording label according to claim 5, wherein the hiding layer is formed by applying a binder containing titanium white. 8. The thermosensitive color recording label according to claim 5, wherein the concealing layer includes a vapor deposited layer.