JPH01215600A - Metal film pattern transfer sheet - Google Patents

Abstract

PURPOSE:To easily transfer a metal film pattern according to a pattern of a first resin layer to the surface of a material to be subjected to transfer, by providing a first resin layer in a pattern form on a metal film layer and thereon providing a second resin layer all over, which has an adhesion to the first resin layer and a releasability from the metal film layer. CONSTITUTION:A transfer sheet is closely bonded on the surface of a material to be subjected to transfer 7. Thereafter, when a releasable sheet 1 is peeled, a metal film corresponding to a first resin layer 3 is transferred in the state of adhering to the first resin layer 3. This is because the first resin layer 3 has an adhesion to a metal film layer 2, the adhesion strength between a second resin layer 4 and the metal film layer 2 is lower than that between the releasable sheet 1 and the metal film layer 2, and the second resin layer 4 has a releasability from the metal film layer 2. On the other hand, the metal film in contact with the second resin layer 4 is peeled while adhering to the releasable sheet 1. Thus, the same metal film pattern as that of the first resin layer 3 is transferred to the surface of the transfer material 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a metallic luster pattern transfer sheet used for transferring a metallic luster pattern onto the surface of an object to be transferred.

[Conventional technology and Problems that the invention seeks to solve]

In recent years, metal thin film layers have been patterned using a transfer sheet having a metal thin film layer as a method for providing metallic luster patterns on cosmetic containers and surface decorative materials of home appliances such as televisions, or as a method for forming patterns on printed circuit boards. There is a known method for transferring.

Conventionally, as a transfer sheet used for this type of transfer, a metal thin film layer is formed on the entire surface of a release sheet by vapor deposition, etc., and then a resist layer is provided in a predetermined pattern on this metal thin film layer and etched to form a predetermined pattern. A transfer sheet manufactured by a method of forming a metal thin film layer with a pattern is used, but in this method (pasta method), a releasable sheet is subjected to metal vapor deposition, etc., and then etched and washed with water. It is necessary to form a metal thin film layer in a predetermined pattern, which makes the manufacturing process complicated, and these processes have to be performed off-line, which has the disadvantage of making the manufacturing process complicated and complicated, resulting in high costs. .

[Means for Solving the Problems] As a result of intensive research in view of the above points, the present inventors provided a first resin layer in a pattern on the metal thin film layer using a resin that has adhesive properties with the metal thin film layer. Further, a transfer sheet is provided with a second resin layer that has adhesive properties with the first resin layer and has release properties with respect to the metal thin film layer on the entire surface, and the transfer sheet is used as a transfer sheet. It was discovered that a metal thin film pattern corresponding to the pattern of the first resin layer can be easily transferred to the surface of the transferred product when the releasable sheet is peeled off after the first resin layer is adhered to the surface. It has been completed.

That is, the present invention provides: (1) a metal thin film layer provided on the mold release surface of a mold release sheet; The first resin layer is made of a resin that has adhesion to the first resin layer and has releasability to the metal thin film layer, and the metal thin film layer and the first
and a second resin layer covering the entire surface of the resin layer, and the adhesive strength between the releasable sheet and the metal thin film layer is greater than the adhesive strength between the metal thin film layer and the second resin layer. Characteristic metal thin film pattern transfer sheet.

(2) A metal thin film pattern transfer sheet according to claim 1, wherein the second resin layer is colored.

(3) The metal thin film pattern transfer sheet according to claim 1 or 2, further comprising an adhesive layer provided on the surface of the second resin layer.

(4) A metal thin film pattern transfer sheet according to claim 3, characterized in that a printing layer is provided between the second resin layer and the adhesive layer.

The main points are as follows.

Hereinafter, the present invention will be explained based on the drawings.

In the first time, 1 is a releasable sheet, 2 is a metal thin film layer provided on the releasable metal surface of the releasable sheet 1, and 3 is a pattern formed from a resin having adhesive properties with the metal thin film N2. The first resin layer 4 has adhesive properties with the first resin layer 3, and the adhesive strength with the metal thin film layer 2 is smaller than the adhesive strength between the metal thin film layer 2 and the release sheet 1. This is a second resin layer made of a resin having releasability from the thin film N2.

As the releasable sheet 1, any material used in this type of transfer sheet can be used in principle.
The thickness is usually preferably 5 to 200 μm, more preferably 12 to 50 μm.

Specific examples include sheets, films, papers, and synthetic papers made of synthetic resins such as polyesters such as polyethylene terephthalate, polyolefins such as polypropylene and polyethylene, and polyamides such as nylon, and these can be laminated and used if necessary.

The unevenness on the surface 0 of the releasable sheet l determines the unevenness of the surface after transfer, and the surface after transfer is made into a mirror surface (
If the surface of the releasable sheet 1 is to be a mirror surface, the surface of the releasable sheet 1 must be a mirror surface. In addition, in decorative applications, a matte surface is often required, so when meeting such a request, a matte film or the like whose luster has been adjusted by kneading a matting agent, sandblasting, chemical etching, etc. is used as the removable sheet 1. Good to use.

In addition, the releasable sheet 1 may be made of materials other than those described above, and may also be one having a release layer provided thereon to make the surface releasable. This release layer contains a component that allows the metal thin film layer to be partially peeled off during transfer, and specifically includes a suitable vehicle (an example of a vehicle is an ink composition for forming a printing layer described below). paraffin wax (same as those exemplified as vehicles) alone or optionally additionally, paraffin wax,
Examples include waxes such as montan wax and synthetic wax, and those to which a releasing substance such as silicone is added.

The metal thin film layer 2 can be formed by, for example, a vacuum evaporation method, a sputtering method,
It can be formed by ion blating method etc.
The thickness is preferably 400 to 600 people. Examples of the metal constituting the metal thin film layer 2 include aluminum, tin, silver, and copper.

Examples of the resin forming the first resin layer 3 include vapor-deposited primers and adhesives made of resins such as polyurethane resins, vinyl resins, polyamide resins, epoxy resins, and maleic acid resins, and inks made of these resins are used. A predetermined pattern can be printed using printing methods such as offset printing, gravure printing, and screen printing.

It is preferable that the first resin layer 3 is usually formed to have a thickness of 0.1 to 2 μm.

The second resin layer 4 has adhesive properties with the first resin layer 3, and the adhesive strength with the metal thin film N2 is weaker than the adhesive strength between the metal thin film layer 2 and the peelable sheet 1, and the metal thin film layer 2 It is made of a resin that has removability. Examples of such resins include cellulose derivatives such as ethyl cellulose, ethyl hydroxyethyl cellulose, cellulose acetate propionate, and cellulose acetate, styrene resins such as polystyrene, poly-α-methylstyrene, and styrene copolymer resins,
Single or copolymer resins of acrylic or methacrylic resins such as polyethyl methacrylate, polyethyl methacrylate, polyethyl acrylate, and polybutyl acrylate, rosin, rosin-modified maleic acid resin, rosin-modified phenolic resin, polymerized rosin, etc. Examples include one or more of rosin ester resin, polyvinyl acetate resin, coumaron resin, vinyltoluene resin, vinyl chloride resin, polyester resin, polyurethane resin, butyral resin, shellac, gum arabic, acaroid, mastic, etc. It can be formed by applying ink made of these resins using a coating method such as bar code or roll coating. The second resin layer 4 can be colored, and examples of the coloring agent include pigments, dyes, and the like. Pigments include lead white, lithopone, titanium oxide, zinc white, pearlite, milli-rich, chalk, carbon black, oil smoke, chromium oxide, yellow lead,
Examples include zinc yellow, red iron oxide, Hansa yellow, madder lake, pretherin lake, toluidine toner, calcium carbonate, barium sulfate, iron oxide, and the like. Dyes include natural dyes and synthetic dyes, and synthetic dyes include threne dyes, triphenylmethane dyes, chromium dyes, anthraquinone acid dyes, azo dyes, naphthol dyes, sulfur dyes, oxidation dyes, etc. Dyes have a problem in weather resistance compared to pigments, so it is preferable to use pigments as the colorant. When the second resin layer 4 is colored, a composite pattern of a metallic luster pattern and a colored pattern can be obtained.

Note that the first resin layer 3 can also be colored. For example, even if the thickness of the metal thin film layer 2 is insufficient, it may be colored in a similar color to the metal thin film layer in order to reliably express the metallic luster after transfer. You can leave it as is.

FIG. 2 shows a metal thin film pattern transfer sheet according to claim 3, wherein an adhesive layer 5 is provided on the surface of the second resin layer 4. The adhesive layer 5 is made of a resin that has excellent adhesion to the transferred object and also has adhesion to the second resin layer 4. Examples of the adhesive constituting the adhesive layer 5 include rubber-based resins such as polyisoprene rubber, polyisobutyl rubber, styrene-butadiene rubber, and butadiene-acrylonitrile rubber, (meth)acrylate-based resins, polyvinyl ether-based resins, Polyvinyl acetate resin, vinyl chloride-vinyl acetate copolymer resin, polystyrene resin, polyester resin, polyamide resin,
Any adhesives made of thermoplastic resins such as polychlorinated olefin resins and polyvinyl butyral resins may be used. These adhesives are diluted as necessary to have a viscosity suitable for application, and then coated by a known coating method such as reverse roll coating, roll coating, gravure coating, kiss coating, blade coating, smooth coating, etc. If the thickness of the adhesive layer 5 is less than 0.5 μm, the adhesive force will not be sufficient, and if it exceeds 10 μm, the interlayer strength of the adhesive layer 5 will tend to decrease, so it is preferably about 0.5 to 10 μm.

FIG. 3 shows a metal thin film pattern transfer sheet according to claim 4, wherein a printing N6 is provided between the second resin layer 4 and the adhesive layer 5 of the transfer sheet shown in FIG.

The ink composition used to form the printing layer 6 is prepared by kneading a vehicle with a colorant such as a pigment or dye, a plasticizer, a stabilizer or other additives, a solvent or a diluent, and the vehicle is The same resin as used for the second resin layer 4 is used.

[Function] To transfer a metal thin film pattern using the transfer sheet of the present invention,
First, the transfer sheet of the present invention is closely adhered to the surface of the transferred article 7 (FIG. 4). Next, when the releasable sheet 1 is separated by 711, the first resin layer 3 and the metal thin film layer 2 have adhesive properties, and the adhesive strength between the second resin layer 4 and the metal thin film layer 2 is lower than that of the releasable sheet 1. is weaker than the adhesive strength between the metal thin film layer 2 and the metal thin film layer 2 (the adhesive strength between the metal thin film layer 2 and the release sheet 1 is strong <),
Since the interlayer between the second resin layer 4 and the metal thin film layer 2 has peelability, the metal thin film in the first resin layer 3 portion is transferred while being adhered to the first resin N3. resin layer 4
The metal thin film at the portion in contact with the releasable sheet 1 is peeled off while remaining adhered to the releasable sheet 1, and a metal thin film pattern having the same pattern as the pattern of the first resin layer 3 is transferred onto the surface of the transferred product 7.

In addition, a second resin layer 4 as shown in FIG. 3 is used as a transfer sheet.
A printing layer 6 is provided between the adhesive layer 5 and the second resin layer 4.
When a transparent resin is used as the layer, after the transfer, a pattern of the metal thin film is formed in the same pattern as the pattern of the first resin layer 3, as shown in FIG. The printed layer 6 is exposed, and a composite pattern of the metallic luster pattern and the printed pattern can be formed.

〔Example] Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 Aluminum vapor deposition (thickness: 500) was applied to the release surface of releasable sheet 1 (MC-13423 manufactured by Reiko ■), and a thick layer of vapor-deposited brimer (manufactured by Showa Ink ■) was applied to the surface of vapor deposition surface 2. After gravure printing in a predetermined pattern with a thickness of 1 μm, 1
It was dried at 70°C for 15 seconds to form a patterned first resin layer 3.

Further, a melamine-based ink (manufactured by Showa Ink ■) was coated on this surface to a thickness of 6 μm by gravure coating, and then dried at 100° C. for 15 seconds to form a second resin layer 4. Next, a vinyl chloride adhesive (manufactured by Showa Ink ■) was coated on this surface to a thickness of 3 μm using gravure coating to form an adhesive layer 5, thereby obtaining a transfer sheet having the structure shown in FIG.

This transfer sheet was superimposed on the surface of a 1.5 mm thick acrylic plate (Nia Acrylite manufactured by Mitsubishi Rayon ■) so that the adhesive layer 5 was in contact with it, and was transferred at 200'C x 3 m/min. The releasable sheet 1 was peeled off. A metal thin film layer with the same pattern as the first resin layer 3 was transferred onto the surface of the acrylic plate, forming a beautiful metallic luster pattern.

[Effects of the Invention] As explained above, in the transfer sheet of the present invention, the metal thin film with a pattern corresponding to the pattern of the first resin layer is peeled off from the releasable sheet and transferred at the time of transfer. It is not necessary to form a metal thin film layer in a predetermined pattern in advance, and it is easy to manufacture and can be provided at low cost.

Furthermore, by coloring the second resin layer, a composite pattern of a metallic luster pattern and a colored pattern can be formed.

Furthermore, when a printing layer is provided between the second resin layer and the adhesive layer, the printing layer appears in the area where the metal thin film pattern is not formed after transfer, and
A composite pattern of the metallic luster pattern and the pattern of the printed layer can be transferred and formed.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of the transfer sheet of the present invention, and FIG.
The figure is a longitudinal sectional view of a transfer sheet according to claim 3, in which an adhesive layer is provided, and FIG. 3 is a longitudinal cross-sectional view of a transfer sheet according to claim 4, in which a printing layer is provided between the adhesive layer and the second resin layer. 4 is a longitudinal sectional view showing a state in which transfer is performed using the transfer sheet shown in FIG. 1, and FIG. 5 is a longitudinal sectional view of a transferred product with a metal thin film pattern transferred and formed using the transfer sheet shown in FIG. 3. It is a front view. 1... Peelable sheet 2... Metal thin film layer 3...
First resin layer 4... Second resin layer 5... Adhesive layer 6... Printing layer 7... Transferred product Figure 1 Figure 2 Figure 3

Claims (4)

[Claims] (1) A metal thin film layer provided on the entire release surface of the release sheet, and a first resin made of a resin that has adhesive properties with the metal thin film layer and provided in a predetermined pattern on the metal thin film layer. The layer is made of a resin that has adhesive properties with the first resin layer and has releasability with the metal thin film layer, and the metal thin film layer and the first
and a second resin layer covering the entire surface of the resin layer, and the adhesive strength between the releasable sheet and the metal thin film layer is greater than the adhesive strength between the metal thin film layer and the second resin layer. Characteristic metal thin film pattern transfer sheet. (2) A metal thin film pattern transfer sheet according to claim 1, wherein the second resin layer is colored. (3) The metal thin film pattern transfer sheet according to claim 1 or 2, further comprising an adhesive layer provided on the surface of the second resin layer. (4) A metal thin film pattern transfer sheet according to claim 3, characterized in that a printing layer is provided between the second resin layer and the adhesive layer.