JPS6342599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides characters with a metallic tone by applying a metal evaporation layer in a pattern in synchronization with the printed design.
This relates to transfer foils containing patterns and the like.

Conventionally, foil stamping using metal vapor deposition has been commonly used as a painting method to partially impart metallic luster to plastics, etc., and this includes printing, which involves painting pictures, patterns, etc. It is performed in a separate process from the metal vapor deposition foil stamping that adds metallic luster patterns, and there are technically many separation points in registering the complex designs and patterns with the foil stamping vapor deposition transfer area. In addition, since foil stamping is also a stamping transfer using a mold, there are drawbacks such as unevenness on the transfer surface, which has a metallic luster, and the appearance is not good. Then partially vapor-deposited transfer foils are made, these are the first
As shown in Figs. 4 to 4, a water-soluble coating film 2 is applied to areas that do not require vapor deposition, a vapor deposited layer 3 is applied to the entire surface, and then the unnecessary areas of the vapor deposited layer are removed. No. 49-26384, Special Publication No. 48781 (1987), Publication No. 48781 (1984), Publication No. 48781 (1983)
21124), but these methods
Since it is necessary to apply the water-soluble coating layer 2 after printing the text and pattern 1, the registration position of the tweezers between the pattern 1 and the water-soluble coating layer 2 is incorrect as shown in Figures 1 and 2. It is possible, and it is necessary to take what is called "escape" in the printing industry. That is, either the water-soluble coating layer 2 is coated with a margin so as not to overlap the ink layer 1 (Figure 1), or the water-soluble coating layer 2 is coated so as to slightly overlap the ink layer 1 (Figure 2). ). However, if such a method is adopted, the structure obtained in the case of FIG. 1 becomes as shown in FIG. The metallic luster will appear directly as the edging, and the second
In the case shown in the figure, the resultant structure is as shown in Fig. 4, and when seen through from the opposite side of the vapor deposition, the ink layer 1 has a metallic luster in some parts, but at the edges. There are some parts that do not have this, and these characters all have a perfectly synchronized metallic luster,
I can't say it's a picture. As described above, in the prior art, it has been difficult to completely synchronize the ink layer and the metal vapor deposition layer.

Therefore, the present invention provides a method for completely synchronizing an ink layer and a metal vapor deposited layer.More specifically, (a) a release layer that is easier to peel than the base material is provided on one side of a base material such as a film; (b) Next, print a pattern with colored or colorless ink containing a chemical that makes the water-soluble coating layer insoluble, and if necessary, further print a pattern with ink that does not contain the above chemical to form a pattern layer. (c) Next, a water-soluble coating layer is formed on the entire surface or in part, and (d) After vapor-depositing metal, etc. on the entire surface, washing with water dissolves and removes the water-soluble coating layer other than the insolubilized portion. A method for manufacturing a vapor-deposited transfer foil, which comprises: washing off unnecessary portions of the vapor-deposited layer, (e) providing an adhesive anchor layer for adhering the vapor-deposited layer and the adhesive layer as necessary, and then providing an adhesive layer. It is.

Hereinafter, the present invention will be explained with reference to FIGS. 5 to 8 of the drawings.

That is, in the present invention, first, a peeling layer 5 that is easier to peel than the base material 4 is provided on one side of the base material 4, and then a water-soluble coating layer 7 is applied to the areas that require metallic luster to make it insolubilized and waterproof. One or more kinds of chemicals are mixed with colored or colorless ink, and an arbitrary pattern layer 6 is formed using this ink. Further, at this time, another pattern layer 6' may be formed using ink that does not contain such chemicals. After this,
A water-soluble coating layer 7 is provided on the entire surface, and then a vapor-deposited layer 9 of metal or the like is applied on the entire surface (FIG. 5). Thereafter, the uncured water-soluble coating layer 7 is dissolved and removed by washing with water, and the unnecessary vapor deposited layer 9 is removed to obtain a foil as shown in FIG. In FIG. 6, 7 is a water-soluble coating layer insolubilized by a chemical added to the ink, and since this coincides with the pattern layer 6, the pattern layer 6 and the vapor deposited layer 9 are in a completely coincident form. Therefore, a pattern with metallic luster can be obtained.

Next, if necessary, in order to improve the adhesion between the vapor deposition layer and the adhesive layer, an anchor layer 11 with excellent adhesion is provided for both, and then an adhesive layer 10 is further provided.
(Figure 7).

As the film base material 4, polyester, polypropylene film, etc. are practically excellent as films that have excellent heat resistance, water resistance, and chemical resistance. It is possible to use composite films of resins. Next, as the peeling layer 5, it is easier to peel than the film base material 4, and may be transparent or colored.
During the transfer process, the object to be transferred and the heat-sensitive adhesive layer 10 are bonded with a force weaker than the adhesive force, and when the metal vapor deposited layer 9 is dissolved and removed, the releasability is such that it does not peel off from the film base material 4. Chlorinated rubber, thermoplastic acrylic resin, chlorinated polyolefin, vinyl resin, and cyclized rubber can be used, and two or more of these can be mixed to adjust the required peeling performance and adhesive strength. It is also possible to do so.

Next, for the ink of the pattern layer 6, a resin having sufficient adhesion to the release layer 5 is used, and polyester resin, urethane resin, alkyd resin, etc. can be used, and cellulose resin-based or butyral resin-based ink may also be used.

Further, the agent added to the ink may be one that hardens or makes the water-soluble coating layer 7 water-resistant.For example, when a water-soluble resin is used as the water-soluble coating layer 7, the water-soluble resin is generally used. Oligomers with functional groups such as isocyanate, melamine, aldehyde, and epoxy that react with the hydroxyl, amino, and carboxyl groups, crosslink, or become water resistant can be used, as well as dioctyl with migration properties. Plasticizers such as phthalates can be used. Examples of reactions between various waterproofing agents and water-soluble resins are as follows: (a) Acetalization reaction between polyvinyl alcohol and aldehydes such as formalin, acetaldehyde, and butyraldehyde.

(b) Crosslinking reaction between polyvinyl alcohol and N-methylol urea, N-methylol melamine, etc.

(c) Melamine crosslinking For example, a water-soluble resin having a hydroxyl group and a butylated melamine resin are crosslinked as follows.

(d) Isocyanate crosslinking Therefore, as the water-soluble coating layer 7 to be applied on the entire surface or partially, cellulose derivatives such as polyacrylic acid or its salt, polyethyleneimine, polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVA), and hydroxypropyl cellulose (HPC) are used. , starch, casein, etc. can be used, and this coating film and the pattern layer 6 containing the above-mentioned drug adhere well, and the water-soluble resin layer becomes insolubilized by the transfer of the drug. Heating is preferred in order to achieve insolubilization in a short time.

Next, the vapor deposition layer 9 is formed by normal vacuum vapor deposition,
The film may be deposited to a thickness of about 200 Å to 800 Å. For example, metals such as aluminum, tin, silver, copper, and chromium can be used for vapor deposition.

When the foil obtained in this way is placed in a water tank and washed with water, the vapor deposited layer 9 in the area where the chemical-containing pattern layer 6 is not has the water-soluble coating layer 7 insolubilized.
Due to its dissolution, it is washed away, leaving only the vapor deposited layer in the portion of the pattern layer 6 containing the drug. At the same time, the vapor deposited layer 9 is removed from the part of the pattern layer 6' that does not contain the chemical by washing with water.

This foil is dried and coated with a heat-sensitive adhesive to form an adhesive layer 10. As the heat-sensitive adhesive, for example, when the object to be transferred is polystyrene, heat-sensitive adhesive such as acrylic resin or vinyl chloride resin, and if the object to be transferred is polyolefin resin, chlorinated polypropylene or ethylene-acetic acid is used. Vinyl etc. are effective. In addition, if the adhesion between these adhesives and the vapor deposition layer 9 is insufficient, polyester resin, polyurethane resin, vinyl resin, etc. may be used as the anchor layer 11.
It can also be applied as a liquid (Fig. 7).

The transfer foil shown in FIGS. 8a and 8b has a design effect added to the above-mentioned transfer foil, and the water-soluble coating layer 7 is applied before or after applying the water-soluble coating layer 7, or before the vapor deposition process. A varnish 8 containing a chemical that insolubilizes the image is applied in a larger amount than the pattern layer 6, and the resulting transfer foil has the pattern and a metallic luster border on the outside thereof.

As a method of thermally transferring the metal vapor-deposited transfer sheet of the present invention having the above-described structure to the transfer target, the heat-sensitive adhesive layer 7 of the metal vapor-deposited sheet is overlapped in contact with the transfer target surface, heated and pressed, and after cooling, the transfer target is transferred. By peeling off the film base material from the transfer body, the film is peeled off along the peeling layer 2 as a boundary and transferred to the surface to be transferred, completing the painting. This will be explained below using examples.

Example 1 Methyl methacrylic acid resin was applied as a release layer to a polyester film (25μ), and a pattern was formed by printing with transparent red ink mainly composed of polyester to which 10 parts of isocyanate was added as a water-resistant and insolubilizing agent. Afterwards, PVP (polyvinylpyrrolidone) (20% solution) was applied to the entire surface and thoroughly dried. Next, aluminum was deposited using a conventional method to a film thickness of approximately 500 Å. Furthermore, this film was washed with water to remove the non-water resistant PVP layer and the vapor deposited layer above it, dried, and an adhesive layer made of polyester as a main component with ethyl methacrylic resin added was printed on the entire surface to obtain a transfer foil. . This transfer foil has a printed pattern and aluminum vapor deposition layer that perfectly match.
Patterns and letters with metallic colors were placed in desired areas.

Rubber surface temperature on styrene plate as transferred object
After heat and pressure bonding was carried out at 200° C. and a surface speed of 6 m/min, the polyester film was peeled off to obtain a transferred product partially having metallic letters and designs.

[Brief explanation of drawings]

FIGS. 1 to 4 are explanatory diagrams of the conventional method, and FIGS. 5 to 8 are explanatory diagrams of the present invention. 1... Ink layer, 2... Water-soluble coating layer, 3...
Aluminum vapor deposited layer, 4...Base film, 5...Peeling layer, 6, 6'...Picture layer containing or not containing a drug that insolubilizes the water-soluble coating layer, 7...Water-soluble coating layer and its water-resistant portion, 8... vapor-deposited OP varnish layer, 9... metal vapor-deposited layer, 10... heat-sensitive adhesive layer.

Claims (1)

[Scope of Claims] 1. (a) A transparent peeling layer that is easily peeled off from the base material is provided on one side of a base material such as a film, and (b) a coloring layer containing a chemical that insolubilizes the water-soluble coating layer is then applied. Alternatively, a picture layer of colorless ink is formed, (c) a water-soluble coating layer is formed on the entire surface including the picture layer, and the picture layer is rendered insolubilized (d) a metal vapor deposition layer is then formed on the entire surface. Then, by washing with water, unnecessary metal vapor deposited layers other than the pattern layer are removed by dissolving and removing the water-soluble coating layer, and (e) an adhesive layer is provided on the entire surface.