JPH03190800A - Article to which metallic gloss is transferred - Google Patents

Abstract

PURPOSE:To obtain an article which has a metallic gloss and is best suited for processing with an electronic range and a high-frequency welder by transferring a metallic gloss using a transfer foil consisting of a protecting resin layer, a tin-vapor deposited layer and an adhesive layer formed sequentially on one surface of a base film through a mold lubricant layer. CONSTITUTION:A metallic gloss is transferred using a transfer foil consisting of a protecting resin layer 3, a tin-vapor deposited layer 4 and an adhesive layer 5 formed on one surface of a base film 1 through a mold lubricant layer 2. Subsequently, an article to which a metallic gloss is transferred is obtained without the occurrence of a sparking phenomenon on the surface to which the gloss is transferred due to the use of electrons generated by a continuous magnetron for microwave heating in an electronic range. In addition, the article has an ample metallic gloss and is best suited for heating using an electronic range or working using a high-frequency welder.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a transfer label that can be used in a high-frequency welder transfer method as well as a normal transfer method, and that can be heated in a microwave oven, and a metallic gloss transfer product that can be subjected to high-frequency welder processing. It is.

[Prior art] Traditionally, transfer foils for label applications include a protective resin layer, a metal vapor deposited layer such as aluminum, chromium, gold, or silver, and an adhesive layer on one side of a base film via a release agent layer. A structure formed in sequence has been used.

However, in the case of these metals, the metal vapor deposition layer has electrical conductivity, so when used for microwave oven labels or high-frequency welding processing, the electrons generated by a continuous magnetron for microwave heating in a microwave oven Therefore, there is a problem that a spark phenomenon occurs on the transfer surface, making it unusable.Similarly, a spark phenomenon also occurs during high-frequency welding, making it unusable.

A method to solve this problem was to make the metal vapor deposited layer thinner, but a new problem arose: the metallic luster was not sufficient.

[Object of the Invention] In view of the above-mentioned conventional problems, an object of the present invention is to provide a metallic luster transfer product that has metallic luster and is excellent in microwave oven suitability and high frequency welding suitability.

[Structure of the Invention] In other words, the present invention provides a transfer film that is transferred using a transfer foil in which a protective resin layer, a tin vapor deposition layer, and an adhesive layer are sequentially formed on one side of a base film via a release agent layer. The present invention relates to a metallic luster transfer product suitable for high-frequency welding processing.

That is, the transfer foil used in the metallic luster transfer product of the present invention has a tin vapor-deposited layer instead of the metal vapor-deposited layer of aluminum, chromium, gold, silver, etc. of conventional transfer materials.
When conventional transfer materials such as metals such as aluminum, chromium, gold, and silver are used, the deposited layer has electrical conductivity. Electrons generated by the continuous microwave heating Microwave heating in the microwave caused a spark phenomenon on the transfer surface, which prevented it from being used, and the problem was that the metallic luster was not sufficient when the metal vapor deposition layer was thinned. It completely disappears and has a metallic luster,
Furthermore, we have completed a metallic gloss transfer product suitable for microwave heating and high-frequency welding processing.

That is, the present invention provides a protective resin layer (3), a tin vapor deposition layer (
4) and the transfer foil on which the adhesive layer (5) is formed, for example, electrons generated by a continuous magnetron for microwave heating in a microwave oven do not cause a spark phenomenon on the transfer surface, resulting in sufficient metallic luster. This makes it possible to provide metallic luster transfer products suitable for microwave heating and high-frequency welding processing.

As the base film (1) in the transfer foil used for the metallic gloss transfer product of the present invention, any material can be used as long as it has sufficient self-retention properties, such as polyester, polyamide, polyamideimide, polyethylene, polypropylene, and cellulose acetate. , resins such as polycarbonate, polyvinyl chloride, and fluororesins, film-like materials or sheet-like materials such as cellophane paper and glassine paper, and release paper or films.

In particular, as the base film (1), it is preferable to use a film-like material of the above-mentioned resins with a thickness of about 12 to 25 ILm from the viewpoint of continuous mass production of transfer foil without wrinkles or cracks. .

The base film (1) may also be a film whose front and/or back surfaces are subjected to hairline processing, matte processing, or the like.

Furthermore, the invention filed earlier by the present applicant (Japanese Patent Application No. 1988-
A thin film of an inorganic material such as 5iO1Si02, TiO2, ZnO1^120 is coated on the opposite side of the plastic film to the side on which the thermal transfer layer is provided, as described in Japanese Patent No. 260774).
Oxides such as 3, nitrides such as TiN, carbides such as TiC, carbon, A1, Ni, Cr, Ti, Ni-Cr
It may be made of a metal such as an alloy and processed to have hotstake resistance by providing a thin film of about 6 to 1100 nm.

The base film (1) is coated with paraffin wax, silicone, fluororesin, fluorine surfactant, cellulose resin, acrylic resin, etc. in order to improve releasability from the protective resin layer (3). 2) Form.

The thickness of the mold release agent layer (2) is usually appropriately selected from a range of about 0.5 to 1.5 pm.

Examples of resins for forming the protective resin layer (3) include urethane resins, melamine resins, phenol resins, diallyl phthalate resins, epoxy resins, polyester resins, acrylic resins, and polyvinyl butyral resins. , thermoplastic resins such as cellulose resins, polyamide resins, vinyl chloride-vinyl acetate copolymer resins, chlorinated polyolefin resins, chlorinated rubber resins, thermosetting resins, electron beam curable resins, and ultraviolet curable resins. Preferably, any of these may be used alone or as a mixture, and if necessary, a mixture of coloring materials such as dyes and pigments may be used.

The protective resin layer (3) is formed using a roll coating method or a gravure coating method using an organic solvent solution, aqueous solution, etc. of the resin for forming the protective resin layer.

This is carried out by applying by a normal coating method such as a reverse coating method or a spray coating method, and drying (curing in the case of a thermosetting resin, an electron beam curable resin, an ultraviolet curable resin, etc.).

There is no particular limit to the thickness of the protective resin layer (3) in the transfer foil used for the metallic luster transfer product of the present invention, but it is usually 0.5~
It is appropriately selected from a range of about 3 pm.

The tin vapor deposited layer (4) of the transfer foil used for the metallic luster transfer product of the present invention
) is formed on the protective resin layer by a conventional method. For example, it is formed by a conventional metal thin film forming method such as a known vacuum evaporation method, sputtering method, or ion plating method.

The thickness of the tin vapor deposition layer (4) is about 5 to 40 nm, preferably about 15 to 30 nm. Thickness is 5
If it is less than about m, sufficient metallic luster cannot be obtained, which is not preferable. Furthermore, if it is formed to a thickness of about 40 parts m or more, further improvement of the metallic luster cannot be obtained, which is undesirable because it is not economical, and furthermore, the tin vapor deposition layer (4) is electrically conductive, causing sparking phenomenon on the transfer surface. This is not desirable as it tends to occur.

Adhesive layer (5) of the transfer foil used in the metallic luster transfer product of the present invention
) Examples include acrylic resins, ethylene-vinyl acetate copolymers, vinyl chloride-vinyl acetate copolymers, styrene resins, epoxy resins, chlorinated polyolefin resins, vinyl acetate resins, vinyl chloride resins, Rosin-modified maleic acid resins, polyester resins, ketone resins, synthetic rubber resins, polyamide resins, and the like can be used alone or in combination. The thickness of the adhesive layer (5) is appropriately selected depending on the surface condition of the object to be transferred, etc., but it is usually selected from a range of about 0.5 to 10 parts m, and the thickness is determined depending on the surface condition of the object to be transferred. If it is relatively smooth, it is relatively thin, about 1 to 2 μs.

Next, the metallic luster transfer product of the present invention will be explained with reference to Examples.

[Examples] Example 1 On one side of a biaxially stretched polyethylene terephthalate film with a thickness of 12 gm, a solvent naphtha solution (solid content: 2% by weight) of synthetic wax was applied by gravure coating method and dried to a thickness of 0.5 gm. Forming a release agent layer of sJLm,
Next, 60 parts of urea-melamine resin (parts by weight, same below)
A methyl isobutyl ketone/butyl acetate mixed solvent solution (solid content: 25% by weight) of a thermosetting resin consisting of 3 parts of a phosphoric acid catalyst was applied and dried by a gravure coating method to form a protective resin layer with a thickness of lpm. Tin is deposited by vacuum evaporation to form a tin vapor deposited layer with a thickness of 20 parts m, and then a methyl ethyl ketone/ethyl acetate mixed solvent of a thermoplastic resin consisting of 30 parts of vinyl chloride-vinyl acetate copolymer and 30 parts of acrylic resin is deposited. A solution (solid content 10% by weight) of adhesive was applied using the reverse coating method and dried to a thickness of 3 g.
A transfer foil for use in the metallic luster transfer product of the present invention was obtained by forming an adhesive layer of m.

Using the transfer foil obtained in this way, a metallic color label (metallic gloss transfer product of the present invention) was created by transferring it onto the surface of an adhesive-applied label material, and this was heated in a microwave oven. No problems such as sparks were observed with the product.

The same transfer foil was also used to transfer onto the surface of soft vinyl chloride to create metallic-colored soft vinyl chloride (metallic luster transfer product of the present invention), which was then subjected to high-frequency welding processing. The spark phenomenon observed in the metallic gloss transfer product was not observed.

[Effects of the Invention] As can be seen from the examples, the metallic luster transfer product of the present invention does not use conventional transfer materials such as aluminum, chromium,
Just by using a transfer foil with a tin vapor deposition layer instead of metals such as gold and silver, electron charging occurs when using metals such as aluminum, chromium, gold, and silver for conventional metallic gloss transfer products. This solves the problem of sparks caused by charged electrons.

Therefore, the metallic luster transfer product of the present invention can be said to be an epoch-making invention as it enables the use of metallic luster labels, which could not be used for microwave labels until now, and also enables high-frequency welding processing. .

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing the basic structure of the metallic luster transfer product of the present invention. FIG. 2 is a schematic cross-sectional view showing the basic structure of a transfer foil used in the metallic luster transfer product of the present invention. (Symbols in drawings) (1): Base film (2): Release agent layer (3): Protective resin layer (4): Tin vapor deposition layer (5): Adhesive layer (5): Transferred object (7) :Metallic luster transfer product diagram

Claims (1)

[Claims] 1. A metal suitable for microwave heating and high-frequency welding that is transferred using a transfer foil in which a protective resin layer, a tin vapor deposition layer, and an adhesive layer are sequentially formed on one side of a base film via a release agent layer. Glossy transfer product.