JPH07146648A - Indicator label - Google Patents

Abstract

PURPOSE:To provide an indicator label unnecessary for a releasing paper and an indicator label capable of easily fixing a substrate layer. CONSTITUTION:The indicator label is obtained by sticking a label obtained by providing a covering layer composed of a pigment, a plasticizer and a high molecular resin 2 and a dye diffusing layer 3 on a transparent film and further providing an adhesive layer 4 thereon to a substrate 6 on which a dye is printed, and is not provided with the releasing layer by using a pressure and heat sensitive adhesive as a tacky adhesive agent. And the indicator label is provided with a tacky adhesive layer 7 on the substrate 6 on which the dye 5 is printed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indicator label showing history according to a period and temperature, and more specifically, an indicator capable of knowing a ticket such as an admission ticket, a shelf life of food, a validity period of a chemical at a glance. It is about labels.

[0002]

2. Description of the Related Art Regarding an expiration date and the like, there are the following indicators as indicators for showing a history according to the period. Some volatile drugs have a solvent or wax component and their diffusion can be visually observed from the outside of the container. However, in this method, since the components are diffused in the air, there is a problem in hygiene. There is also an indicator for knowing the period by color change due to gases such as oxygen and carbon dioxide in the air. However, this method is greatly affected by the humidity in the air. A label for the passage of time has been proposed for the purpose of solving these problems. (Japanese Patent Application No. 4-185027
No.) However, in this method, release paper was stuck in the adhesive processing. Further, when the indicator is used, it is necessary to fix the substrate on which the dye is printed to the display object, but it is troublesome to fix it with an adhesive or the like.

[0003]

SUMMARY OF THE INVENTION The present invention focuses on such a problem, and an object thereof is to provide an indicator label that does not require a release paper and an indicator label that can easily fix a base material layer. To do.

[0004]

In order to solve the above-mentioned problems, the present invention provides a concealing layer made of a pigment, a plasticizer and a polymer resin and a dye diffusion layer on a transparent film, and further on it. It is an indicator label in which a pressure-sensitive adhesive and a heat-sensitive adhesive are used as an adhesive in an indicator label formed by bonding a label provided with an adhesive layer and a base material on which a dye is printed, and a release paper is not provided. The indicator label is an indicator label in which an adhesive layer is provided on a dye-printed substrate.

The principle of the present invention is to utilize the diffusion of a dye, and the coloring is determined by the type of polymer resin used in the hiding layer and the dye diffusion layer, the coating amount, the type of plasticizer added,
It can be arbitrarily set depending on the amount and the type of dye.

The present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional explanatory view of an indicator label of the present invention. The indicator label is composed of a transparent film (1), a hiding layer (2), a dye diffusion layer (3) and an adhesive layer (4), and a base material (6) on which a dye (5) is printed is stuck to the indicator label. Become. Further, the adhesive layer (7) may be provided below the substrate (6) depending on the application.

Transparent film used in the present invention (1)
Can be any plastic film that is generally used. For example, cellophane, vinyl chloride, polyethylene, polypropylene, polyester,
It is a film of polyimide, polycarbonate, polystyrene or the like.

The hiding layer (2) used in the present invention is white,
It consists of yellow, red, or blue pigment, plasticizer, and polymer resin. Those used as pigments are titanium oxide, zinc oxide, lithopone, cadmium yellow, yellow lead, titanium yellow, zinc chromate, ocher, amber, yellow iron oxide, red iron oxide cadmium red, chromium oxide green, cobalt blue, cobalt violet, benzine yellow. , Hansa Yellow, Resoretto, Alizarin Lake, Pigment Scarlet 3B, Brilliant Carmine 6B, Permanent Red F-5R, Lake Red C, Permanent Red 4R, Rhodamine Lake B, Rhodamine Lake Y, Para Red, Peacock Blue Lake, Phthalocyanine Blue, Permanent Yellow. HR, quinacridone,
White, yellow, red, or blue pigments such as perinone perylene, chromophthal yellow 6G, and chromophthal yellow 3G. It must be relatively volatile as a plasticizer and must be compatible with the polymeric resin used. Any such compound can be used, and examples thereof include phosphoric acid esters such as tributyl phosphate, tri-2-ethylhexyl phosphate, tricresyl phosphate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, dioctyl phthalate. Phthalates such as diisononyl phthalate, di2-ethylhexyl phthalate and butylbenzyl phthalate, butyl oleate, aliphatic-basic acid esters such as glycerin monooleate, dibutyl adipate, dihexyl adipate, adipic acid Aliphatic dibasic acid esters such as 2-ethylhexyl, dibutyl sebacate, 2-ethylhexyl sebacate, dihydric alcohol esters such as diethylene glycol dibenzoate, triethylene glycol di2-ethyl butyral, acetylricinole Oxyacid esters such as methyl acrylate, butyl acetylricinoleate, butylphthalyl butyl glycolate, tributyl acetyl citrate, paraffin chloride, methyl abietic acid, trimellitic acid plasticizers, polyester plasticizers, epoxy plasticizers, stearin Examples include acid plasticizers.

As the polymer resin used in the present invention,
Thermoplastic resin, for example, nitrocellulose, epoxy resin, styrene resin, vinyl chloride resin, polyester resin, ethylene-vinyl acetate copolymer resin, vinyl acetate resin, acrylic resin, chlorinated polypropylene resin, polyamide resin, polyvinyl alcohol system Resins, rubber resins, polyurethane resins and the like can be mentioned. The above resins may be used alone or in combination of two or more. In the present invention, the coating amount of the hiding layer is preferably within the range of ^{2 to 20} g / m ² . The composition ratio of the composition is 100 to 500 for the pigment based on 100 parts of the polymer resin in consideration of the hiding property.
It is preferred to use within the range of parts. 1 to 30 plasticizers
The department is fine.

The dye diffusion layer (3) of the present invention comprises a black pigment or a metal paste, a plasticizer and a polymer resin. As the black pigment or metal paste, those having a high hiding property are preferable, and for example, carbon black, anion black, aluminum paste and the like are used. As the plasticizer and the polymer resin, those described in the above-mentioned hiding layer can be similarly used. In the present invention, the coating amount of the dye diffusion layer is preferably set within the range of 1 to 10 g / m ² . The composition ratio of the polymer resin is 10 in consideration of the hiding property.
It is preferable to use the pigment in the range of 50 to 300 parts with respect to 0 part. The plasticizer may be 1 to 30 parts.

The pressure-sensitive and heat-sensitive pressure-sensitive adhesives are preferable as the pressure-sensitive adhesives used in the pressure-sensitive adhesive layer (4) of the present invention, and the resins include cellulose derivative resins, styrene resins, styrene copolymer resins, acrylic resins, methacrylic resins, rosin esters. ,
Polyvinyl acetate, vinyl chloride-vinyl acetate copolymer resin,
Polyester resin, polyurethane resin, butyral resin, polyamide resin, ethylene-vinyl acetate copolymer resin, etc. are used. Further, two or more kinds of these resins may be mixed. The above plasticizer may be added to the pressure-sensitive adhesive as the case requires.

In this indicator label, the hiding layer is first made into a paint using a suitable solvent and the paint is applied to a transparent film. As the coating method, gravure coating, roll coating, flexo coating, screen coating, comma coating, die coating, offset coating, micro gravure coating and the like can be used. The dye diffusion layer and the pressure-sensitive adhesive layer are made into a coating material and applied in the same manner as the concealing layer.

This indicator label is formed by sticking base materials on which dyes are printed in advance. The history by temperature and time after pasting is displayed. The dye (5) used here is a sublimable oil-soluble dye and a disperse dye. For example, azo dyes such as Solvent Yellow 2, Solvent Orange 1, Solvent Red 24 and Solvent Brown 3, Solvent Yellow 10, Solvent Orange 5, Solvent Brown 37, Azo metal complex salts such as Solvent Orange 5 and Solvent Red 8, Solvent Violet 13 , Solvent Blue 11, Solvent Green 3 and other anthraquinone dyes, Solvent Blue 25 and other phthalocyanine dyes, Disperse Orange 3, Disperse Red 1, Disperse Yellow 3, Disperse Violet 24, Disperse Blue 44 and other aminoazo dyes, Disperse Orange 1
1, disperse red 4, disperse violet red 1, disperse blue 4 and other aminoanthraquinone dyes, utroarylamine dyes and the like.

In the dye, the oil-soluble dye has a higher coloring property than the disperse dye, and therefore it is preferable to use the oil-soluble dye as a color having a short coloring time and the disperse dye as a long color. Gravure printing as a method of printing dye,
Any printing method such as flexographic printing, offset printing, screen printing is possible.

[0015]

According to the present invention, the release paper can be eliminated by using the pressure-sensitive and heat-sensitive adhesive. In addition, by providing an adhesive layer on a base material on which a dye is printed, it is possible to easily attach the base material to various base materials, and the range of use as an indicator label is expanded.

[0016]

EXAMPLES The present invention will be described in detail with reference to Examples. <Example 1> [Protective film] Polyester film (E5100 manufactured by Toyobo Co., Ltd.) 50μ [Hiding layer] Urethane resin (Lamista-Medium manufactured by Toyo Ink Mfg. Co., Ltd.) 20 parts Titanium oxide 20 parts Diethylhexyl phthalate 2 Parts Toluene / methyl ethyl ketone = 1/1 80 parts [dye diffusion layer] polyester urethane resin (UR3200 manufactured by Toyobo Co., Ltd.) 20 parts carbon black 10 parts diethylhexyl phthalate 2 parts [adhesive layer] heat-sensitive adhesive, (Ethylene-vinyl acetate copolymer) 100 parts Diethylhexyl phthalate 2 parts

6 μm of the above-mentioned concealing layer was coated on the above-mentioned protective film, 2 μm of the above-mentioned dye diffusion layer was coated thereon, and 5 μm of the above-mentioned adhesive layer was further coated thereon to obtain an indicator label.

<Example 2> [Hiding layer] Urethane resin (SNACKVURE medium manufactured by Dainippon Ink and Chemicals, Inc.) 20 parts Titanium oxide 20 parts Diethylhexyl adipate 2 parts Toluene / methyl ethyl ketone = 6/4 80 parts [ Dye diffusion layer] Polyester urethane resin (UR3200 manufactured by Toyobo Co., Ltd.) 20 parts Carbon black 10 parts Diethylhexyl adipate 2 parts Toluene / methyl ethyl ketone = 1/1 80 parts [Adhesive layer] Delayed tack type heat-sensitive adhesive acrylic acid Ester 100 parts Rosin ester 100 parts Dicyclohexyl phthalate 80 parts

The same protective film as in Example 1 was coated with 6 μ of the above-mentioned concealing layer, 2 μ of the above-mentioned dye diffusion layer, and 9 μ of the above-mentioned adhesive layer thereon to obtain an indicator label.

"Evaluation" The indicator labels obtained in Examples 1 and 2 were pasted on a base material on which the following dyes were previously pattern printed, and the density on the protective film was measured by a Macbeth densitometer. The results are shown in (Table 1). [Dye] Solvent Bull-25 (manufactured by Hodogaya Chemical Co., Ltd.) [Base material] PY base paper (manufactured by Honshu Paper Co., Ltd.) [Adhesive] Olivain BPS3757 (manufactured by Toyo Ink Mfg. Co., Ltd.) [Release paper] NA (Lintec (Made by Co., Ltd.)

[0021]

[Table 1]

[0022]

According to the present invention, the release paper can be eliminated by using the pressure-sensitive and heat-sensitive adhesive, and the manufacturing process can be shortened. Also, by providing an adhesive layer on the base material on which the dye is printed, it can be used as an indicator label on various base materials.

[0023]

[Brief description of drawings]

FIG. 1 is a sectional explanatory view showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Transparent film 2 ... Hiding layer 3 ... Dye diffusion layer 4 ...
Adhesive layer 5 ... Dye 6 ... Base material 7 ... Adhesive layer

Claims (2)

[Claims] 1. A label comprising a concealing layer made of a pigment, a plasticizer, and a polymer resin and a dye diffusion layer on a transparent film, and an adhesive layer formed on the cover layer, and a dye-printed substrate. In the indicator label formed by sticking together, a pressure sensitive and heat sensitive adhesive is used as an adhesive so that a release paper is not provided. 2. The indicator label according to claim 1, wherein an adhesive layer is provided on a base material on which a dye is printed.