JP3144187B2 - Indicator label - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indicator label for indicating a history based on a period and a temperature. It is about labels.

[0002]

2. Description of the Related Art There are the following indicators for indicating a history according to an expiration date or the like. Some volatile chemicals have components in the form of solvents and waxes, and their diffusion is visible from outside the container. However, in this method, since the components are diffused in the air, there is a problem in hygiene and the like. There is also an indicator for knowing a period by a color change due to a gas such as oxygen or carbon dioxide in the air. However, this method is greatly affected by the humidity in the air. In order to solve these problems, a time-lapse label was proposed. (Japanese Patent Application No. 4-185027)
No.) However, in this method, a release paper was bonded in the adhesive processing. Further, when the indicator is used, it is necessary to fix the base material on which the dye is printed on the object to be displayed, but it is troublesome to fix the base material with an adhesive or the like.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and has as its object to provide an indicator label which does not require release paper and an indicator label which can easily fix a base material layer. I do.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a concealing layer and a dye diffusion layer comprising a pigment, a plasticizer and a polymer resin are provided on a transparent film. thermal, and labels formed by providing an adhesive layer consisting of the adhesive pressure sensitive, and a substrate printed with dye, the label
It is an indicator label stuck through an adhesive layer . Further, in the indicator label, a substrate printed with dyes, characterized in that providing an adhesive layer
It is an indicator label according to claim 1 .

The principle of the present invention is to utilize the diffusion of a dye, and the color development is based on the type of polymer resin used in the concealing layer and the dye diffusion layer, the amount of coating, the type of plasticizer to be added,
It can be set arbitrarily 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 an explanatory sectional view of the indicator label of the present invention. The indicator label is composed of a transparent film (1), a concealing layer (2), a dye diffusion layer (3), an adhesive layer (4), and a substrate (6) on which a dye (5) is printed is stuck thereon. Become. Further, an adhesive layer (7) may be provided below the base material (6) depending on the use.

The transparent film used in the present invention (1)
Any plastic film that is generally used can be 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 a yellow, red or blue pigment, a plasticizer and a polymer resin. The pigments used are titanium oxide, zinc oxide, lithopone, cadmium yellow, graphite, titanium yellow, zinc chromate, loess, amber, yellow iron oxide, red iron oxide cadmium red, chrome oxide green, cobalt blue, cobalt violet, benzine yellow. , Hansa Yellow, Risorret, 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, chromophtal yellow 6G, and chromophtal yellow 3G. As a plasticizer, it is relatively involatile and must be compatible with the polymer resin used. Any such compounds can be used, and examples thereof include tributyl phosphate, tri-2-ethylhexyl phosphate, phosphate esters such as tricresyl phosphate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate, and dioctyl phthalate. Phthalic acid esters such as diisononyl phthalate, di-2-ethylhexyl phthalate, and butylbenzyl phthalate; aliphatic-basic acid esters such as butyl oleate and glycerin monooleate; dibutyl adipate; dihexyl adipate; adipic acid Aliphatic dibasic acid esters such as 2-ethylhexyl, dibutyl sebacate and 2-ethylhexyl sebacate, dihydric alcohol esters such as diethylene glycol dibenzoate and triethylene glycol di-2-ethylbutyral, and acetyl ricinol Oxyacid esters such as methyl acrylate, butyl acetyl ricinoleate, butyl phthalyl butyl glycolate, acetyl tributyl citrate, paraffin chloride, methyl abietate, trimellitic acid plasticizer, polyester plasticizer, epoxy plasticizer, stearin Acid-based plasticizers and the like.

The polymer resin used in the present invention includes:
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-based Resins, rubber resins, polyurethane resins and the like can be mentioned. The above resins can be used alone or in combination of two or more. In the present invention, the coating amount of the concealing layer is preferably in the range of ^{2 to 20} g / m ² . The composition ratio of the pigment is 100 to 500 parts with respect to 100 parts of the polymer resin in consideration of the concealing property.
It is preferred to use in the range of parts. Plasticizer is 1-30
Department.

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 the metal paste, those having a high concealing property are preferable. For example, carbon black, anion black, aluminum paste and the like are used. As the plasticizer and the polymer resin, those described for the concealing layer can be used in the same manner. In the present invention, the coating amount of the dye diffusion layer is preferably in the range of 1 to 10 g / m ² . The composition ratio of the composition is determined based on the polymer resin 10 in consideration of concealing properties.
It is preferable to use the pigment in the range of 50 to 300 parts based on 0 part. The plasticizer may be 1 to 30 parts.

As the pressure-sensitive adhesive used in the pressure-sensitive adhesive layer (4) of the present invention, pressure-sensitive and heat-sensitive pressure-sensitive adhesives are preferable. As the resin, cellulose derivative resin, styrene resin, styrene copolymer resin, acrylic resin, methacrylic resin, rosin ester ,
Polyvinyl acetate, vinyl chloride-vinyl acetate copolymer resin,
Polyester resin, polyurethane resin, butyral resin, polyamide resin, ethylene-vinyl acetate copolymer resin, or the like is used. Further, two or more of these resins may be mixed. The above-mentioned plasticizer may be added to the pressure-sensitive adhesive in some cases.

In this indicator label, first, the concealing layer is formed into a paint using a suitable solvent, and the paint is applied to a transparent film. As a coating method, a coating method such as a gravure coat, a roll coat, a flexo coat, a screen coat, a comma coat, a die coat, an offset coat, and a microgravure coat can be used. The method for preparing the dye diffusion layer and the adhesive layer as a paint and applying the same are the same as those for the concealing layer.

For this indicator label, a substrate on which a dye is printed in advance is attached. 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, Solvent Brown 3, etc., azo metal complex salts such as Solvent Yellow 10, Solvent Orange 5, Solvent Brown 37, Solvent Orange 5, Solvent Red 8, etc .; Anthraquinone dyes such as Solvent Blue 11, Solvent Green 3, phthalocyanine dyes such as Solvent Blue 25, Disperse Orange 3, Disperse Red 1, Disperse Yellow 3, Disperse Violet 24, Disperse Blue 44 and the like, aminoazo dyes, Disperse Orange 1
1, Disperse Red 4, Disperse Bio Red 1, Disperse Blue 4, and the like.

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

[0015]

According to the present invention, release paper can be eliminated by using a pressure-sensitive and heat-sensitive adhesive. Further, by providing an adhesive layer on a substrate on which a dye is printed, it is possible to easily attach the substrate to various substrates, 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 (Lamister-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

On the above protective film, 6 μm of the above concealing layer was applied, 2 μm of the above dye diffusion layer was applied thereon, and 5 μm of the above adhesive layer was further applied 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 thermosensitive adhesive Acrylic acid Ester 100 parts Rosin ester 100 parts Dicyclohexyl phthalate 80 parts

On the same protective film as in Example 1, 6 μm of the above-mentioned concealing layer, 2 μm of the above-mentioned dye diffusion layer and 9 μm of the above-mentioned adhesive layer were applied thereon to obtain an indicator label.

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

[0021]

[Table 1]

[0022]

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

[0023]

[Brief description of the drawings]

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transparent film 2 ... Hiding layer 3 ... Dye diffusion layer 4 ...
Adhesive layer 5 ... Dye 6 ... Substrate 7 ... Adhesive layer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-158682 (JP, A) JP-A-60-151578 (JP, A) JP-A-1-141197 (JP, A) (58) Investigation Field (Int.Cl. ⁷ , DB name) G09F 3/02

Claims (2)

(57) [Claims] 1. A label comprising a transparent film, a concealing layer comprising a pigment, a plasticizer and a polymer resin and a dye diffusion layer, and further comprising an adhesive layer comprising a heat-sensitive and pressure- sensitive adhesive. And the substrate on which the dye is printed ,
An indicator label that is attached via a deposition layer . Wherein in said indicator label, 請, characterized in that the substrate printed with dye, providing an adhesive layer
The indicator label according to claim 1 .