JPH0848073A - Laminate transferring method - Google Patents

Abstract

PURPOSE:To develop a laminate transferring method, by which laminate transferring with planography can extremely simply be applied by small lots and multikinds easily and economically to a body to be transferred, to which originally no planography is possible CONSTITUTION:Planography is carried out on the surface of a thermoplastic formed film as a filmy adhesive, which is temporarily attached on mounting paper or film having favorable dimensional stability, so as to polymerize printed surface and body to be transferred together in order to laminate transfer the printed surface to the body to be transferred together with the film under heat and pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminate transfer method, and more specifically, it is a mating material (transferred material) which is originally impossible to be lithographically printed by applying lithographic printing onto a molded thermoplastic film. On the other hand, with regard to the method of performing the laminate transfer, the process is extremely simple and it is possible to economically and swiftly cope with a large number of small lots.

[0002]

2. Description of the Related Art Conventionally, as a transfer means by heating and pressing,
A typical example thereof is hot stamping, and the present technology is based on a polyester film and has at least 3 layers such as a release layer, a gravure ink pattern layer, and finally an adhesive layer.
Since it requires two complicated steps and uses an expensive gravure plate, it cannot be economically matched unless a lot of lots are collected, and there is an industrial problem. Incidentally, among the existing printing methods, lithographic printing is the only one that can satisfy the two conditions of low plate cost and high-definition pattern printing.

On the other hand, a mount or film having a good shape or dimensional stability against heat or external force, to which a thermoplastic film is temporarily adhered, has been developed and put on the market.

[0004]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to provide a transfer material which is originally not capable of lithographic printing.
It is an object of the present invention to develop a laminate transfer method which is very simple and can be applied economically to a large number of types in a small lot in a laminate transfer using lithographic printing.

[0005]

The inventor of the present invention has been earnestly researching in order to solve the above-mentioned problems. In this research, the above-mentioned mount which has never been used for laminate transfer has been used. We came up with a completely new idea as to whether or not we could use a base material made by temporarily attaching a thermoplastic film to a film. Continued research based on this idea, lithographic printing directly on the thermoplastic molding film of the above substrate,
When laminating this film together with the transferred material, it is possible to directly transfer a highly precise pattern unique to lithographic printing to the transferred material that cannot be lithographically printed, and the printed pattern is covered with the above film and is robust and durable. It was found that an excellent transcript of 1) was obtained, and the present invention was completed here.

[0006]

The present invention basically has the following constitution. (B) Use a commercially available base material in which a thermoplastic molding film is temporarily attached on a mount or film having good dimensional stability.

(B) Printing by lithographic printing on the thermoplastic molding film of this substrate. (C) The printed surface is polymerized with the transferred material, and the thermoplastic molding film and the thermoplastic film are laminated and transferred to the transferred material by heating and pressing. (D) After that, remove the mount or film. Is.

There is no limitation on the material or molding method of the base material used in the present invention, that is, the thermoplastic molding film temporarily attached to the mount or film having excellent shape and dimensional stability against heat and external force, but it is commercially available. Examples of preferable products include those shown in Table 1.

[0009]

[Table 1]

The molded product of the thermoplastic film of the substrate shown in Table 1 is different from the conventional coating film such as the peeling layer and the adhesive layer,
Its strength is extremely excellent and there is no so-called back trapping phenomenon in which it is peeled off or destroyed by the adhesive force of the ink during lithographic printing.

The term "temporary attachment" as used in the present invention means a faint adhesion which can be easily peeled off with a finger but is not peeled off during printing, and is not an adhesion. Therefore, when the mount or the film is peeled off immediately after the thermal transfer, it is a feature of the present invention that it is much easier to peel off than the conventional general thermal transfer sheet and the operation is extremely easy.

The thermal transfer temperature does not depend on the melting point of the thermoplastic film and is considerably lower than the melting point, for example, although the melting point of Esmer URS (polyurethane type) is 170 ° C., a temperature of 120 to 150 ° C. is sufficient. Can be transcribed. The present inventor interprets this as a Thermo Deflection Temperature. Therefore, the transfer temperature should be determined in consideration of the heat resistance of the transferred material, and generally 120 to 150
It is desirable to operate at ℃, but if the material to be transferred (counterpart material) having a large heat resistance, such as cloth, metallic glass, ceramics, etc., the transfer time can be shortened at about 200 ° C to improve the efficiency.

The laminate transfer method referred to in the present invention is a pattern formed by lithographic printing on a surface of a mount or film having a stable shape and size, which is temporarily adhered with a thermoplastic molded product as a film adhesive. Is to be transferred to a transfer target by heat and pressure, not a coating film such as a release layer or an adhesive layer, but a single molding film.

[0014]

The features of the laminate transfer method of the present invention are as follows. There are no concerns about backtrapping during lithographic printing. Peelability: Very light Transferability: 100% perfect adhesion Adhesion: Extremely strong and robust Fast delivery and economical: No need for a release layer or adhesive layer, process and composition Is extremely simple.

[0015]

EXAMPLES Examples will be shown below.

[0016]

Example 1 A pattern lithographically printed on ELFAN UH203 (thickness 100 μm) is laminated and transferred to a soft vinyl chloride type processed sheet (Toray-501 White) at 120 ° C. and to cotton cloth or silk at 150 ° C. The obtained transfer product covered the entire printing surface of the molded product and became a very robust and beautiful finish.

The cotton cloth and silk have a soft finish as if they were laminated with synthetic leather, and are extremely robust even against washing.

[0018]

Example 2 The same process as in Example 1 was carried out except that Elfhan UH604 (100 μ) was used. Similar results were obtained.

[0019]

[Example 3] Except that ELFAN OH501 (100 µ) was used, the same treatment as in Example 1 was carried out, and the same result was obtained.

[0020]

Example 4 Except for using FCM10089, the same process as in Example 1 was carried out and the same result was obtained.

[0021]

[Embodiment 5] The same as Embodiment 1 except that FCM10157 (50-60 μm) is used. However, the obtained transfer had a mirror-like gloss.

[0022]

Example 6 The pattern lithographically printed on ELFAN NT120 (80μ) was laminated and transferred onto cotton cloth and silk at 150 ° C. A transfer product having high wash fastness was obtained.

[0023]

Example 7 Similar results were obtained when Esmer URS (100 μ) was used in place of Elfhan NT120 of Example 6.

Claims (1)

[Claims] 1. A lithographic printing is performed on the surface of a thermoplastic molding film as a film adhesive which is temporarily adhered to a mount or a film having good dimensional stability, and the printing surface and a transfer target are polymerized and heated and pressed. The laminate transfer method is characterized in that the film and the film are laminated-transferred to a transfer target.