JPH027836B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a transfer material that exhibits a cracked metal pattern, and more specifically to a method for producing a transfer material that exhibits a metallic luster and a cracked pattern. The purpose is to manufacture a transfer material that can be used.

The transfer material is a material that transfers a transfer layer provided on a base sheet onto the surface to be transferred by means such as pressing or heating, and is used to enhance the decorative effect of the object to be transferred or to express characters and patterns on the surface to be transferred. It is used to do things. In recent years, transfer materials that exhibit crack patterns have been created mainly for reasons of design (see Japanese Patent Publication No. 7836/1983). However, this invention had the following drawbacks because it relied on a method of forming irregularities on the surface of the base sheet by embossing or rolling operations. In other words, in the case of embossing, one type of roughness is expressed with one type of mold, so it is costly to create many types of products, and the crack pattern becomes a planned one.
Furthermore, when using a rubbing operation, a lot of manual work is required, which is time-consuming, and it is difficult to obtain a crack pattern with the desired roughness. The present inventors aimed to improve the above-mentioned drawbacks and to obtain a transfer material capable of expressing images, letters, etc. in which the areas with metallic luster and the areas with crack patterns are aligned, and conducted various research and considerations. As a result of repeated efforts, the present invention was completed. That is, the present invention provides a release layer 2 on a base sheet 1.
After providing the curable resin layer 3 thereon, after or before making the curable resin layer 3 into a semi-cured state by treatment such as heating, a partially water-soluble material is applied onto the curable resin layer 3. After forming the curable resin layer 4 and then causing cracks to occur by contacting the surface of the curable resin layer 3 with an organic solvent, the curable resin layer 3 is completely cured by treatment such as heating, and then This method of manufacturing a transfer material exhibiting a cracked metal pattern is characterized in that after forming a metal vapor deposition layer 5, the water-soluble resin layer 4 is removed, and then an adhesive layer 6 is provided.

The present invention will be explained in more detail below. First, a release layer 2 is provided on a base sheet 1 using a material used for ordinary transfer materials. As the base sheet 1, polyethylene terephthalate film, etc.
Examples of resins constituting the release layer 2 include acrylic resins, polyolefin resins, vinyl chloride, vinyl acetate, and the like. Note that a colored ink layer 7 may be provided on the release layer 2 if necessary.

A curable resin layer 3 is provided partially or entirely on the release layer 2 using a curable resin by means of printing, coating, etc. (see FIG. 1). What is curable resin here?
It refers to a resin that is cured by treatment such as heating, ultraviolet irradiation, electron beam irradiation, and X-ray irradiation. Examples include thermosetting resins such as melamine and acrylic, and ultraviolet curable resins such as urethane acrylate and polyester acrylate.

The formed curable resin layer 3 is subjected to appropriate treatment such as heating to cure the curable resin used,
The curable resin layer 3 is brought into a semi-cured state. The semi-hardened state is a state before complete hardening, and the desired degree of hardening is achieved by appropriately adjusting the heating temperature, irradiation intensity, processing time, etc.

After or before bringing the curable resin layer 3 into a semi-cured state, a water-soluble resin layer 4 is partially formed on the curable resin layer 3. Since this water-soluble resin layer 4 is formed in areas other than those where the metal pattern and crack pattern are formed, negative patterns such as pictures and letters that are to be expressed by the crack metal pattern can be printed or the like. It consists of The water-soluble resin used is, for example, polyvinyl alcohol (see Figure 1).

Next, the surface of the curable resin layer 3 is brought into contact with an organic solvent such as ketones, esters, hydrocarbons, etc. by coating, dipping, printing, spraying, or other means. In this step, a crack pattern is formed on the surface of the curable resin layer 3 in a portion where the water-soluble resin layer 4 is not provided (see FIG. 2). The cause of this cracking is not certain, but the relatively uncured parts of the semi-cured resin are dissolved and removed by contact with the organic solvent, and at the same time the hardening progresses. It is presumed that the portion formed by the resin is condensed by the condensation force inside the resin, and is formed by mutual action. A crack pattern with different roughness is created depending on the degree of hardening of the semi-hardened state and the solvent treatment conditions.

Next, by the treatment such as heating, the curable resin layer 3
Allow to completely harden. A colored ink layer 7 is formed thereon as required, and a metal vapor deposition layer 5 is further provided on the entire surface. A dye solution is suitable as the colored ink in this case (see Figure 3). Thereafter, the water-soluble resin layer 4 is removed by washing or the like. At this time, unnecessary metal vapor deposition layer 5 is removed (see FIG. 4). Furthermore, an adhesive layer 6 is provided thereon (see FIG. 5).

Since the present invention is a method for manufacturing a transfer material as described above, it is possible to easily produce a pattern or a character in which the register of the metallic luster pattern and the crack pattern match. Furthermore, many types of crack patterns can be created, and designs that are not planned can be obtained. Further, the process is easy, and by appropriately selecting the resin and processing conditions, it is easy to obtain a crack pattern with a desired roughness.

Therefore, the transfer material obtained by the present invention can enhance the decorative effect by applying it to the surface of articles made of various base materials, and is expected to be widely used.

Examples of the present invention will be described below.

All parts represent parts by weight.

<Example> A polyethylene terephthalate film is used as a base sheet, a release layer is provided on it using a chlorinated olefin resin, a pattern is provided on top of the release layer using a chlorinated olefin resin mixed with an organic pigment, and a pattern is further applied on top of the release layer. A curable resin layer was formed on the entire surface using a resin having the following composition.

Butylated urea resin 15 parts Short oil alkite resin 4 parts Ethyl cellulose 8 parts Toluene 35 parts Ethyl acetate 38 parts A water-soluble resin layer was printed on the curable resin layer in the form of letter cutouts using an ink having the following composition.

Polyvinyl alcohol 8 parts Zinc white 3 parts Methanol 45 parts Isopropyl alcohol 44 parts Next, this was heated at 160°C for 10 seconds, and then gravure coated with an organic solvent of ethyl acetate/methyl ethyl ketone = 1/1 to coat the water-soluble resin layer. Cracks were generated in the unformed cut-out characters. Thereafter, it was heated at 160° C. for 30 seconds to completely cure the curable resin layer.

Next, aluminum was vapor-deposited on the entire surface to form a metal vapor-deposited layer, and then the water-soluble resin layer and the metal vapor-deposited layer thereon were removed by washing with water.

Thereafter, an adhesive layer was formed using an adhesive made of a mixture of vinyl chloride vinyl acetate copolymer resin and acrylonitrile-styrene copolymer resin. The thus obtained transfer material exhibits silver letters with crack patterns in the colored design.

[Brief explanation of drawings]

1, 2, 3, and 4 are schematic cross-sectional views of the transfer material in each step of the present invention, and FIG. 5 is a schematic cross-sectional view of an example of the transfer material obtained by the present invention. are shown respectively. In the figure, 1...Base sheet, 2...Peeling layer, 3...
... Curable resin layer, 4 ... Water-soluble resin layer, 5 ... Metal vapor deposition layer, 6 ... Adhesive layer. 7... Colored ink layer.

Claims (1)

[Claims] 1 After providing a release layer on a base sheet and providing a curable resin layer thereon, after or before making the curable resin layer into a semi-cured state by treatment such as heating, After partially forming a water-soluble resin layer and then causing cracks by bringing an organic solvent into contact with the surface of the curable resin layer, the curable resin layer is completely cured by a treatment such as heating, and then 1. A method for manufacturing a transfer material that reveals a cracked metal pattern, which comprises forming a metal vapor deposited layer on the surface, removing the water-soluble resin layer, and then providing an adhesive layer.