JPH10157399A - Transfer film and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out the clear printing by using ink of ultraviolet curing resin and printing a pattern on a base film and forming a bonded layer thereon. SOLUTION: A transfer film 10 is provided with a transparent base film 12. A release layer 14 is formed uniformly all over one face of the base film 12. A pattern is printed on the surface of the release layer 14 by using ultraviolet curing ink 16. Ultraviolet curing resin is used for the ultraviolet curing ink 16. An anker layer is formed, if necessary, on the surface of the ultraviolet curing ink 16. A bonded layer 18 is formed on the surface of the anker layer. A fine pattern can be printed sharply by the arrangement, and the design of high quality level can be formed on a product to enhance the added value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer film for applying a pattern to the surface of an article such as various commodities and a method for producing the same.

[0002]

2. Description of the Related Art In order to apply a pattern to the surface of a product using a conventional transfer film, the transfer film is inserted between a transfer device and a transfer surface of the product, and a heated transfer roll is pressed against the transfer film. The pattern of the film is transferred to the product. Conventionally, when a pattern is formed on this transfer film, the pattern has been printed on the surface of the base film with a solvent-type ink or a two-component dry-curable ink by screen printing.

[0003]

In the case of the transfer film of the prior art described above, the solvent-type ink and the two-component dry-curable ink evaporate in air and gradually increase in viscosity. The ink in the portion was easily clogged. As a result, it is difficult to express fine characters, fine lines, and photographic objects, and there are cases where partial printing is not performed or a printed portion is missing. Therefore, when a rough screen plate is used to prevent clogging, the image is rough, and the reproduction of edges and the like is poor, so that a sharp pattern cannot be printed. In addition, when low viscosity ink was used without changing the number of lines of the screen plate, clogging on the screen plate could be prevented, but the ink concentration was low due to the high solvent content in the ink. There have been problems such as the pattern and color becoming thin, lacking in concealing properties, and impairing the sense of quality.

[0004] In addition, when printing directly on a product, equipment such as a printing device and printing technology are required in a product manufacturing factory, which requires a large amount of cost on the product manufacturer side, and is expensive for high-quality depiction. It requires technology, and there is a limit in directly printing high-quality patterns on products at the product manufacturing plant.

The present invention has been made in view of the above-mentioned problems of the prior art, and provides a transfer film on which fine characters, fine lines, photographic objects, and the like can be clearly printed, and which can also be used for printing thick embossments. The purpose is to do.

[0006]

The present invention is a transfer film in which a pattern is printed on a base film with an ink made of a UV-curable resin and has an adhesive layer thereon.

Further, according to the present invention, a pattern is printed on a base film with an ink made of an ultraviolet-curable resin by a silk screen printing method, and the ink is irradiated with ultraviolet rays to be cured, and an adhesive is applied to the surface of the ink. This is a method for producing a transfer film in which an adhesive layer is formed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the transfer film of the present invention. This transfer film 10 has a transparent base film 12, and the material of the base film 12 is, for example, polyethylene terephthalate, polycarbonate, polystyrene, polyamide, Examples include synthetic resin films such as polyamideimide, polyethylene, and polyvinyl chloride, artificial resin films, film-like materials such as Japanese paper, and composite film-like or composite sheet-like materials thereof.

A release layer 14 is uniformly formed on one side of the base film 12. The release layer 14 includes, for example, paraffin wax, acrylic resin, urethane resin, cellulose resin, silicone resin, melamine resin, urea resin, urea-melamine resin, benzobuanamin resin, surfactant, and the like. , Alone or in mixtures. The thickness of the release layer 14 is 0.1 to 2 μm.
It is appropriately adopted from a range of about m.

A pattern is printed on the surface of the release layer 14 with an ultraviolet curable ink 16. UV curable ink 1
UV curable resin 6 is used, which is a copolymer of an oligomer and a monomer. As the oligomer, for example, a urethane acrylate, an epoxy acrylate, a polyester acrylate, a polyether oligomer, a polybutadiene acrylate, a silicone acrylate alone or a mixture is used. As the monomer, for example, a monofunctional acrylate or a polyfunctional acrylate (2 to 6 functional acrylate) is used. The kind and the mixing ratio of the oligomer and the monomer are appropriately selected in consideration of curability, flexibility, adhesion, workability, and the like. The thickness of the ultraviolet curable ink 16 is 5
The thickness is about 150 μm, and is appropriately adopted according to the shape of the picture to be printed and the application such as emboss printing.

An anchor layer (not shown) is provided on the surface of the ultraviolet curable ink 16 as necessary. The anchor layer is, for example, a vinyl chloride resin, a vinyl acetate resin, a vinyl chloride-vinyl acetate resin, an ethylene-vinyl acetate resin, a chlorinated rubber resin, an acrylic resin, a polyester resin, a urethane resin, or the like. A mixture is used. The thickness of the anchor layer is appropriately selected from the range of about 0.1 to 2 μm.

An adhesive layer 18 is provided on the surface of the anchor layer. The adhesive layer 18 is, for example, an acrylic resin, a vinyl acetate resin, a vinyl chloride resin, a styrene-butadiene resin, a vinyl chloride-vinyl acetate resin, an ethylene-vinyl acetate resin, a polyester resin, a chlorinated rubber resin, A single urethane resin or a mixture thereof is used. The thickness of the adhesive agent 18 is about 0.3 to 20 μm, and is appropriately adopted according to the type and surface condition of the transfer object.

In the method of manufacturing the transfer film 10 of this embodiment, first, a solution in which paraffin wax or the like for the release layer 14 is dissolved in an organic solvent is applied onto the base film 12 by gravure printing, screen printing, or the like. After drying, the release layer 14 is formed. A pattern is printed on the surface of the release layer 14 with the ultraviolet curable ink 16 by a silk screen printing method. The ultraviolet curable ink 16 does not increase in viscosity even when it comes into contact with air during silk screen printing, and can be printed neatly without clogging on the screen plate. Thereafter, the ultraviolet-curable ink 16 is cured by irradiating ultraviolet rays to the surface on which the ultraviolet-curable ink 16 has been silk-printed. The conditions such as the intensity of ultraviolet rays and the time are selected optimally according to the types and the mixing ratios of the oligomer and the monomer.

On the surface of the UV-curable ink 16, a material obtained by dissolving a vinyl chloride resin or the like for an anchor layer in an organic solvent, if necessary, is printed and dried to form an anchor layer. Then, an acrylic resin or the like for the adhesive layer 18 which is emulsified or dissolved in an organic solvent is applied to the surface of the anchor layer or the ultraviolet curable ink 16 and dried and cured to form the adhesive layer 18.

Next, a method of using the transfer film 10 of this embodiment will be described. First, the transfer film 10 of this embodiment is positioned between the transfer device and the product to be transferred, and the surface on which the ultraviolet curable ink 16 is printed and the print surface of the product are matched. Then, the roller of the transfer device is heated to a predetermined temperature, and the base film 12 of the transfer film 10 is hot-pressed by the roller. As a result, the base film 12 is peeled off by the release layer 14, and the ultraviolet curable ink 1
6 is transferred to the product together with the adhesive layer 18. At this time, the ultraviolet curable ink 16 is securely adhered to the product by the adhesive layer 18.

According to the transfer film 10 of the present invention, a fine pattern is also sharply printed, a high-quality design can be applied to a product, and added value can be increased. A screen plate with a small number of lines can be used, and the reproducibility of small dots, fine characters, fine lines, etc. is improved, and the range of design expression is widened. Also, photo prints of landscapes, people, characters, etc. can be reproduced beautifully.

Next, a second embodiment of the present invention will be described. Here, since the configuration is the same as that of the above-described embodiment, it will be described with reference to FIG. The transfer film 10 of this embodiment has a pattern formed of a luminous ink containing a luminous pigment in an ultraviolet curable resin. The light emission luminance of the luminous ink increases as the amount of the ink increases, and the amount of the stored light increases. Therefore, the stencil printing with a thick coating film is performed. The UV curable resin component of the phosphorescent ink is the same as in the above embodiment.

The method for manufacturing and using the transfer film of this embodiment is the same as that of the above embodiment.

According to the transfer film 10 of this embodiment, the same effects as those of the above embodiment can be obtained. And, due to the characteristics of the ultraviolet curable resin, the phosphorescent ink can be thickly printed so as to have a sufficient light emission luminance, and after being printed on the base film 12, the film thickness can be maintained and cured by ultraviolet light. it can.

By the thick printing of this embodiment, a relatively thick pattern can be easily and precisely formed on the transfer film 10, and high quality printing can be performed on the product. Has luminous properties,
Printing with higher performance luminous properties can be applied to products.

It should be noted that the embossed printing according to the present invention can also be used for printing braille, projections for preventing slippage, and the like.

Further, the present invention is not limited to the above-described embodiment, and an optimal material is appropriately selected and used.

[0023]

According to the transfer film of the present invention, high-quality printing such as fine pattern printing or thick printing can be performed on a transfer film, and the transfer film can easily perform high-quality printing on a product. .

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a transfer film of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Transfer film 12 Base film 14 Release layer 16 UV curable ink 18 Adhesive layer

Claims (2)

[Claims] 1. A transfer film having a pattern printed on a base film with an ink made of a UV-curable resin. 2. A pattern is printed on a base film with a UV-curable resin ink by a silk screen printing method, and the ink is cured by irradiating UV rays, and an adhesive is applied to the surface of the ink to adhere. A method for producing a transfer film, comprising forming a layer.