JP3039221B2 - 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 indicating a history according to a period and a temperature. More specifically, the present invention relates to an indicator capable of knowing at a glance a ticket such as an admission ticket, a shelf life of food, a validity period of a chemical, and the like. It is about labels.

[0002]

2. Description of the Related Art There are the following indicators for indicating the history of the expiration date of a product according to the period. 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.

[0003] In order to solve these problems, a time-lapse display label has been proposed. (Japanese Patent Application No. 4-185027)
However, this method has a problem that the coloring time is ambiguous and only one coloring time can be displayed.

[0004]

SUMMARY OF THE INVENTION The present invention focuses on such a problem, and provides an indicator label capable of accurately grasping the coloring time and displaying two or more coloring times with one indicator. The task is to

[0005]

According to the present invention, in order to solve the above-mentioned problems, a concealing layer comprising a pigment, a plasticizer and a polymer resin, and a dye diffusion layer are provided on a transparent substrate. In an indicator label in which an adhesive layer is provided and affixed to a release paper and a dye-printed base material is affixed, pattern printing is performed using a plurality of colors for a pigment used for a concealing layer, and a plurality of dyes are applied to a dye. Is an indicator label using a dye of the following color. In an embodiment, the dye is an indicator label having a different coloring time depending on a combination of a disperse dye and an oil-soluble dye.

Hereinafter, the present invention will be described in detail. The principle of the present invention is based on the diffusion of the dye, and the color development depends on the type of the polymer resin used for the concealing layer and the dye diffusion layer, the amount of the coating, the type and amount of the plasticizer to be added, and the type of the dye. Can be set arbitrarily.

FIG. 1 is a sectional view of an indicator label according to the present invention. The indicator label comprises a transparent substrate (1), a concealing layer (2), a dye diffusion layer (3), an adhesive layer (4), and a release paper (5), on which a dye (6) is printed (7). And stick them together. As the transparent substrate (1) used in the present invention, generally used plastic films, sheets, glass and the like can be used. For example, films and sheets of cellophane, vinyl chloride, polyethylene, polypropylene, polyester, polyimide, polycarbonate, polystyrene and 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 must be relatively involatile and compatible with the polymer resin used. Any such compounds can be used, for example, tributyl phosphate, tri-2-ethylhexyl phosphate, phosphate esters such as tricresyl phosphate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, diheptyl phthalate,
Fatty acid esters such as dioctyl phthalate, diisononyl phthalate, di-2-ethylhexyl phthalate and butyl benzyl phthalate; aliphatic-basic acid esters such as butyl oleate and glycerin monooleate; dibutyl adipate; dihexyl adipate Aliphatic dibasic acid esters such as diethylhexyl adipate, dibutyl sebacate, and ethylhexyl sebacate, diethylene glycol dibenzoate, triethylene glycol di2
Dihydric alcohol esters such as ethyl butyral, methyl acetyl ricinoleate, butyl acetyl ricinoleate,
Oxyacid esters such as butylphthalylbutylglycolate and acetyltributyl citrate; paraffin chloride; methyl abietic acid; trimellitic acid plasticizers; polyester plasticizers; epoxy plasticizers; stearic acid plasticizers;

[0010] 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 2 to 2
It is preferable that the amount be within the range of 0 g / m ² . The composition ratio of the composition is preferably in the range of 100 to 500 parts of the pigment with respect to 100 parts of the polymer resin in consideration of the hiding property. The plasticizer may be 1 to 30 parts.

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 in the above-mentioned hiding 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 preferably in the range of 50 to 300 parts of the pigment with respect to 100 parts of the polymer resin in consideration of the hiding property. 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, generally used pressure-sensitive adhesives can be used.
Examples of the resin type include a rubber type, an acrylic type, and a silicone type. The above-mentioned plasticizer may be added to the adhesive, as the case may be.

In this indicator label, first, the concealing layer is formed into a paint using an appropriate solvent, and the paint is applied to a transparent substrate. 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.

As the release paper used in the present invention, those coated with silicon or those obtained by extruding polyethylene onto paper are used. The substrate may be a film. In this case, any film may be used as long as it has a releasable property. A film of polyethylene, polypropylene, polyester, or the like may be used alone, or kneaded or coated with silicon, fluorine, or the like.

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 (6) 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., Solvent Violet 13 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, aminoanthraquinone dyes, and utroarylamine dyes. 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. As a method for printing the dye, any printing method such as gravure printing, flexographic printing, offset printing, and screen printing can be used.
However, in view of multicolor printing, those capable of pattern printing are preferable.

[0017]

According to the first aspect of the present invention, a substrate on which a dye is printed.
When a label is attached to a transparent substrate (protective film)
Lum) from above the pigment contained in the concealing layer and the dye diffusion layer
Although the color is visible, after the period has elapsed, the dye is
The dye diffusion layer diffuses, and in addition to the color of the pigment,
Are visible from above the transparent substrate. The invention of claim 2
According to disperse dyes and oil-soluble dyes have different rates of diffusion
Therefore, two elapsed periods can be displayed.

[0018]

〔Protective film〕

 Polyester film (E5100, manufactured by Toyobo Co., Ltd.) 50μ [Hidden layer A] 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 = 1/180 Part [Hiding layer B] Urethane resin (Ramister medium manufactured by Toyo Ink Manufacturing Co., Ltd.) 20 parts Cobalt blue 20 parts Toluene / methyl ethyl ketone = 1/1 80 parts [Hiding layer C] Urethane resin (Ramister manufactured by Toyo Ink Manufacturing Co., Ltd.) (Medium) 20 parts Red iron oxide 20 parts Toluene / methyl ethyl ketone = 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 Toluene / methyl ethyl keto = 1/1 80 parts [Adhesive layer] Acrylic adhesive (Olivine BPS3233D, manufactured by Toyo Ink Mfg. Co., Ltd.) 80 parts Diethylhexyl phthalate 2 parts Toluene 40 parts [Release paper] Polyethylene coated paper (manufactured by Lintec Corporation) ) 150μ

On the protective film, 1 μm of the concealing layers B and C is applied, 6 μm of the concealing layer A is applied thereon, 2 μm of the dye diffusion layer is applied thereon, and 4 μm of the adhesive layer is further applied thereon. It was applied and bonded to the release paper to obtain an indicator label.

Example 2 [Hidden layer D] 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 = 6/80 parts 80 parts [Hidden layer E] Urethane resin (SNACKVURE medium manufactured by Dainippon Ink and Chemicals, Inc.) 20 parts Cobalt blue 20 parts Toluene / methyl ethyl ketone = 6/480 80 parts [Hidden layer F] Urethane resin (Dainippon Ink Chemical Industry Co., Ltd. SNACKVURE medium) 20 parts Red iron oxide 20 parts Toluene / methyl ethyl ketone = 6/4 80 parts [Dye diffusion layer] Polyester urethane resin (Toyobo Co., Ltd. UR3200) 20 parts Carbon black 10 parts Diethylhexyl adipate 2 parts toluene / meth Ethyl ketone = 1/1 80 parts of [adhesive layer] acrylic adhesive (Toyo Ink Mfg. Co., Ltd. Oribain BPS3233D) 80 parts of adipic acid diethylhexyl 2 parts Toluene 40 parts

On the same protective film as in Example 1, 1 μm of the concealing layers E and F, 6 μm of the concealment layer D, 2 μm of the dye diffusion layer, and 4 μm of the adhesive layer thereon were applied. It was bonded to the same release paper as in Example 1 to obtain an indicator label.

[Evaluation] The release paper of the indicator label obtained in Examples 1 and 2 was peeled off, and the following dye was pasted on a pattern-printed substrate in advance, so that the red and blue colors on the protective film were changed. The time when the density was the same as the color printed with the pigment ink was defined as the color development time. The results are shown in (Table 1). [Dye] a) Solvent Blue 25 (Hodogaya Chemical Industry Co., Ltd.)
B) Dispersion Blue 4 (Hodogaya Chemical Industry Co., Ltd.) c) Solvent Red 24 (Hodogaya Chemical Industry Co., Ltd.)
D) Dispersion Red 4 (Hodogaya Chemical Industry Co., Ltd.)

[0023]

[Table 1]

[0024]

According to the first aspect of the present invention, a dye is printed.
The transparent substrate (protection)
Film) from above the face contained in the concealing layer and the dye diffusion layer
The color of the dye is visible, but after the period elapses, the dye
Diffuse the dye diffusion layer, in addition to the color of the pigment, the dye
A certain amount of color can be seen from the transparent substrate
Can be measured. In addition, claim 2
According to the invention, the disperse dye and the oil-soluble dye have different diffusion rates.
Therefore, two elapsed periods can be displayed. I
Therefore, if the present invention is used for an indicator label that allows the user to know at a glance the ticket such as an admission ticket, the expiration date of food, the expiration date of chemicals, etc., the coloring time can be accurately determined by one indicator. to measure the more than three time
It is possible.

[0025]

[Brief description of the drawings]

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

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Transparent base material 2 ... Hiding layer 3 ... Dye diffusion layer 4 ... Adhesive layer 5 ... Release paper 6 ... Dye 7 ... Base material

Claims (2)

(57) [Claims] 1. A label formed by providing a concealing layer and a dye diffusion layer comprising a pigment, a plasticizer, and a polymer resin on a transparent substrate, further providing an adhesive layer thereon, and bonding to a release paper;
What is claimed is: 1. An indicator label comprising a dye-printed base material bonded to a pigment, wherein the pigment used for the concealing layer is printed in a pattern using a plurality of colors, and a dye of a plurality of colors is used as the dye. 2. An indicator label, wherein the dye used in claim 1 has a different coloring time depending on a combination of a disperse dye and an oil-soluble dye.