JPH03104700A - Transfer print - Google Patents

Abstract

PURPOSE:To mount a transfer printed layer on an inorganic base with excellent adhesive properties by interposing a hot-melt adhesive layer between the inorganic base and the transfer printed layer. CONSTITUTION:A transfer print is manufactured by interposing a hot melt adhesive layer 2 among an inorganic base 1, in which a plated layer is formed onto a metal such as zinc, nickel, etc., or an alloy thereof, glass or a resin base, and transfer printed layers 3. The adhesive layer 2 is shaped by coating the surface of the base 1 with hot-melt group adhesives and heating and drying the adhesives. Adhesives containing a resin melted by heating is used as the adhesives, and an epoxy resin, etc., is cited as the kind. Adhesives including a crosslinking type resin having excellent solvent resistance and heat resistance is favorable among them. The printed layer 3 is formed by heating and contact- bonding a transfer sheet. A mold release layer, a printed layer employing printing ink including a thermoplastic resin and an adhesive layer are shaped successively onto a film fundamentally. The coating 4 of an ultraviolet curing or thermosetting resin, etc., can be executed in order to impart durability, gloss or the like onto the printed layers 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a transfer printed product comprising a transfer printing layer provided on an Ia-free base material. (Prior Art and its Problems) Conventionally, transfer printing products are known in which a transfer printing layer is provided on a resin molded product for decorative purposes or product display.

However, when trying to provide these transfer printing layers on an inorganic substrate, the adhesion of the transfer printing layer to the inorganic substrate is poor, and transfer printing products made by providing a transfer printing layer on an inorganic substrate have not been put into practical use. .

(Means for Solving the Problems) The present invention is characterized in that, in a transfer printed product in which a transfer printing layer is provided on an inorganic base material, a hot melt adhesive layer is interposed between the inorganic base material and the transfer printing layer. The gist is the transfer print product.

Hereinafter, the present invention will be explained in detail with reference to the attached FIG. 1.

Specific examples of the inorganic base material include metals such as zinc, copper, iron, and nickel, or alloys thereof, glass, ceramics, and those having a plating layer provided on a resin base. The hot melt adhesive layer 2 is formed by applying a true melt adhesive to the surface of the base material 1 and drying it by heating. Hot-melt adhesives contain resins that undergo W4 melting when heated, and include epoxy, polyester, and urethane adhesives. Among these, those having excellent solvent resistance and heat resistance are preferred, and in this respect, those containing crosslinked m fat are preferred. Furthermore, such hot-melt adhesives can be used as they are on the market, but by dissolving them in a solvent, they are easier to apply evenly and are suitable for small parts such as writing instrument clips and barrels. is more effective.

In addition, if necessary, a radical polymerization type coating film of acrylic, melamine, epoxy, polyester, or urethane type may be formed between the inorganic base material 1 and the photomelt adhesive layer 2.

The transfer printing layer 3 is formed by heat-pressing a transfer sheet.

Basically, the transfer sheets 1 to 1 are formed by sequentially forming a release layer, a printing layer printed by screen printing or offset printing using a printing ink containing a thermoplastic resin, and an adhesive layer on a film 2. Become. In addition, transfer printing N3J-. In order to impart durability or gloss, a coating 4 made of ultraviolet curing or thermosetting resin can be applied.

(Example) 10 μm bright nickel plating on a brass plate as a base material.
Apply 0.2 μm chromium plating on bright nickel plating or after drying, apply epoxy hot melt adhesive (S-1
0, Toa Goor Co., Ltd.! 2) was applied by spraying to a thickness of 5 μm and dried at 130° C. for 5 minutes to provide a hot melt adhesive layer.

Next, a transfer sheet, which is made by sequentially forming a release layer, a printing layer made of thermoplastic resin formed by screen printing, and an adhesive layer on a polyester film, is placed on the base layer coated with hot melt adhesive. The silicone rubber was pressed with a plate heated to 240°C for 3 seconds, and the film was peeled off to form a transfer printing layer. Next, a transfer print product was obtained in which a transfer print layer was provided on a brass base material by applying a coating made of an ultraviolet curable resin.

To check the adhesion of the obtained product, cut it with a cutter at 1 mm intervals on the base surface, glue cellophane tape,
Thereafter, an evaluation was made by peeling off the cellophane tape, and very good results were shown.

Nickel plating is applied to the same metal substrate Murakami as in Example 1.
After applying μm shape and drying, apply acrylic paint (Magicron MG).
IOOO. Kansai Paint Co., Ltd.) was applied and dried at 130 degrees Celsius for 30 minutes. Next, a diluted solution of urethane hot melt adhesive (PV8100, manufactured by Toago Ij. Co., Ltd.) diluted 3 times with a 1=1 solvent of xylene and methyl ethyl ketone was sprayed onto Motomura's upper surface. It was applied to a thickness of 3 μm and dried at 130° C. for 5 minutes. Next, a transfer sheet formed by sequentially forming a release layer, a printing layer made of a thermoplastic resin formed by offset printing, and an adhesive layer on a polyester film is placed on the base plate coated with hot melt adhesive, Pressure bonding was performed for 2 seconds through the silicone rubber using a plate heated to 240 degrees Celsius, and the film was peeled off to form a transfer printing polish. Next, a transfer print product was obtained in which a transfer print layer was provided on a brass base material by applying a coating made of an ultraviolet curable resin.

When we evaluated the adhesion of the product obtained in this way,
Similar to Example 1, very good results were shown.

(Effects of the Invention) As described above, according to the present invention, a transfer printed product can be obtained in which a transfer printing layer with excellent adhesiveness is provided on an inorganic base material.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a main part showing an example of the present invention. 1...Base material, 2...Hot melt adhesive layer, 3 Transfer printing Jl. 4...Coating.

Claims (1)

[Claims] A transfer printed product comprising a transfer printing layer provided on an inorganic base material, characterized in that a hot melt adhesive layer is interposed between the inorganic base material and the transfer printing layer.