KR100269772B1 - A transfer film and process for preparing thesame - Google Patents

Abstract

PURPOSE: Provided is a transfer film for uneven surfaces of various types of patterns such as steel, aluminum, plastic, ceramic, rubber, or glass, which has good qualities in resistance to alkali, hardness, and thickness. CONSTITUTION: A method for preparing a transfer film for uneven surfaces of various types of patterns comprises the steps of: (i) combining against main film layer water 40-60%, polyvinylalcohol 22.5-33.5%, starch 8-12%, sugar 2-4%, soap 3-7%, glue 1-3%, latex 3-7%, and silicon oil 0.5-2%, melting at 80-100 deg.C, extruding at 5m/min speed through a roller of 20-100μm thickness, drying with hot air of 60-80deg.C and cooling with cool wind; (ii) printing patterns on the main film layer through gravure, offset or silk screen method; and (iii) coating the printed transfer film with transparent paint, lacquer, primer or resin.

Description

Transfer film for uneven surface of various patterns and manufacturing method thereof

The present invention relates to a transfer film and a method for manufacturing the same, which can transfer various patterns on irregularities of various materials. More specifically, the present invention relates to a transfer film capable of transferring various patterns to various uneven surfaces such as iron, aluminum, plastic, ceramic, rubber and glass, and a method of manufacturing the same.

Conventional transfer films include transfer films (see Japanese Patent Application Laid-Open No. 9-58196), in which a release layer, a protective layer, a print layer, and an adhesive layer are sequentially stacked on a sheet, and a release layer, a print layer, and a concealment of a release coating on the sheet. A transfer film formed by laminating layers and an adhesive layer in turn (see Japanese Patent Laid-Open No. 7-47798); And transfer films (refer to Korean Patent Publication No. 96-2721) in which a resin layer, a release layer, a protective primer layer, and a printing layer are sequentially stacked are known. Therefore, the conventional transfer film is composed of a base layer, a release layer, a printing layer and an adhesive layer, so that the peeling process is complicated during water transfer, and the transfer of the intended pattern on the uneven surface during heat transfer is not easy. There was this. In addition, the conventional transfer film is poor in physical properties as a transfer film, such as coating film adhesion, pencil hardness, coating film thickness and alkali resistance, there was a limit to industrial applications.

Accordingly, the present inventors have diligently researched to develop a transfer film that can easily transfer various patterns to any uneven surface. As a result, water, polyvinyl alcohol and starch are the main ingredients, and sugar, soap, glue, latex and silicone. It was confirmed that the transfer film containing oil has excellent physical properties that can solve the disadvantages of the prior art, and completed the present invention.

After all, it is an object of the present invention to provide a transfer film capable of efficiently transferring various patterns on various irregularities.

Another object of the present invention is to provide a method for producing an electrolytic transfer film.

1 is an enlarged longitudinal sectional view of the transfer film of the present invention.

<Description of the code | symbol about the principal part of drawing>

1 .... main film layer 2 .... printing layer 3 .... flexible coating layer

As shown in Figure 1, the transfer film of the present invention is based on the main film layer (1), it is made by configuring a printing layer (2) and a flexible coating layer (3) thereon.

The main film layer 1 of the present invention contains 40 to 60% water, 22.5 to 33.5% polyvinyl alcohol (polyvinylalcohol (PVA)), and 8 to 12% starch, based on the total weight of the manufactured main film layer 1 In addition, it is prepared by additionally containing 2 to 4% of sugar, 3 to 7% of soap, 1 to 3% of glue, 3 to 7% of latex, and 0.5 to 2% of silicone oil. Play a supportive role. In the main film layer (1), water, polyvinyl alcohol and starch form the base of the main film layer, and in the case of sugar, soap, glue, and latex, it prevents the printed pattern from being disturbed during transfer and in the case of silicone oil Add for release. The printing layer 2 forms the desired pattern on the main film layer 1 by a conventional gravure, offset or silkscreen printing method, and is preferably printed using acrylic ink. On the other hand, the flexible coating layer 3 is to support the pattern between the pattern and the pattern undisturbed where there is no printing of the pattern, and to improve the adhesiveness to the object to be transferred, the purpose of the transparent paint, lacquer, Coated with prima or resin.

Hereinafter, the manufacturing method of the transfer film according to the present invention will be described in more detail by dividing the process.

First step: manufacturing the main film layer

40 to 60% of water, polyvinyl alcohol (PVA) 22.5 to 33.5, starch 8 to 12%, sugar 2 to 4%, soap 3 to 7%, glue 1 to 3% by weight of the main film layer , 3 to 7% of latex and 0.5 to 2% of silicone oil were mixed and dissolved at 80 to 100 ° C., most preferably about 100 ° C., and then put into a roller at a thickness of about 20 to 100 μm and a speed of 3 to 5 m / min. It is drawn out by using a hot air and dried under hot air conditions of 60 to 80 ℃ and cooled by cold air.

Second Process: Printing

The main film layer produced in the first step is printed with the desired pattern by gravure, offset or silkscreen printing methods conventional in the art. In this case, although the printing ink depends on the material to be transferred, acrylic ink is generally used.

Third Step: Flexible Coating

According to the object to be transferred such as iron, aluminum, plastic, ceramic, rubber or glass to the transfer film printed in the second process, after coating a flexible material such as paint or resin onto the roller, In the same way it is coated using a roller.

The transfer film of the present invention may be transferred and printed on the target object to be transferred according to the conventional water transfer or thermal transfer method in the art, or more preferably, “A variety of patterns using thermal expansion adsorption, which is the same as the present application. Printing according to the method disclosed in &quot; Transfer method. &Quot;

Hereinafter, the present invention will be described in more detail with reference to Examples.

These examples are only for illustrating the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not limited to these examples according to the gist of the present invention.

Example 1 Preparation of Transfer Film and Water Transfer of Wood Pattern on Uneven Surface of Aluminum

50% water, 24% polyvinylalcohol (PVA), 10% starch, 3% sugar, 5% soap, 2% glue, 5% latex and 1% silicone oil After dissolving at 100 ° C., the resultant was placed on a roller with a thickness of about 48 μm, pressed out at a speed of 4 m / min, dried under hot air conditions of 70 ° C., and cooled by cold air to prepare a main film layer. Then, the wood pattern was printed by a gravure printing method to obtain a transfer film coated with an acrylic resin. The transfer film produced in the former was floated on a water tank, and the desired aluminum was gradually obtained and transferred by hydraulic pressure.

Example 2 Preparation of Transfer Film and Thermal Expansion Adsorption Transfer of Wood Pattern on Uneven Steel Surface

45% of water, 29% of polyvinyl alcohol, 10% of starch, 3% of sugar, 5% of soap, 2% of glue, 5% of latex and 1% of silicone oil were mixed and dissolved at 100 ° C based on the weight of the main film layer. Thereafter, the resultant was placed in a roller having a thickness of about 80 μm, press-drawn at a speed of 4 m / min, dried under hot air conditions at 75 ° C., and cooled by cold air to prepare a main film layer. Then, the wood pattern was printed by the gravure printing method to prepare a transfer film. After placing the uneven surface of the desired steel in the thermal transfer apparatus and setting the transfer film thereon, the transfer film expanded about 1.5 times with hot air at about 120 ° C. was attached to the steel by operating an adsorber. Confirmed that it was completely attached, the steel was taken out and cooled by cold air to be transferred.

Physical property test of transfer film

Using the transfer film prepared in Example 1 of the present invention and the transfer film of the prior art, the wood pattern is transferred to the aluminum object by the method of transfer of water in Example 1, and then the coating film adhesion and pencil hardness of the transferred film in the transferred state. , Coating thickness and alkali resistance were measured, and the results are shown in Table 1 below. In the former, the conventional transfer film was formed by forming a full coating film on a polyester (PE, polyester) base, and then printed a wood pattern by the gravure printing method, and coated with a transparent laca.

Comparison of properties of transfer film of the present invention and conventional transfer film Test Items Test result The present invention Prior art Film adhesion 100/100 65/100 Pencil hardness 2H 2H Coating thickness (㎛) 48 190 Alkali resistance No change in color and gloss, swelling, peeling, etc. No change in color and gloss, swelling, peeling, etc. Test Methods KS D 6711-92

* Test report of Korea Household Products Testing Institute

As shown in Table 1, the transfer film of the present invention was the same as the conventional film in the alkali resistance and pencil hardness, it can be seen that the coating film thickness can be manufactured to improve the commercial property, the coating film adhesion also for the conventional film Excellent.

As described and demonstrated in detail above, the present invention provides a transfer film and a method for manufacturing the same, which can efficiently transfer various patterns on various uneven surfaces such as iron, aluminum, plastic, ceramic, rubber, and glass. Since the transfer film of the present invention has excellent properties in physical properties such as alkali resistance, pencil hardness, coating thickness, and alkali resistance, it may be widely used for transferring iron, aluminum, plastic, ceramic, rubber, glass, and the like. .

Claims (2)

(Iii) 40 to 60% of water, 22.5 to 33.5% of polyvinylalcohol (PVA), 8 to 12% of starch, 2 to 4% of sugar, 3 to 7% of soap, glue 1 based on the weight of the main film layer 3% to 3%, latex 3 to 7% and silicone oil 0.5 to 2% were mixed and dissolved at 80 to 100 ° C., put into a roller at a thickness of about 20 to 100 μm, and withdrawn at a speed of 3 to 5 m / min to 60 Drying in hot air conditions of 80 ° C. to 80 ° C. and cooling with cold air; (Ii) printing a desired pattern on the electric main film layer by a gravure, offset or silkscreen printing method; And, (Iii) A method of manufacturing a transfer film, comprising the step of coating a flexible material of transparent paint, lacquer, prima or resin on the electroprinted transfer film. 40 to 60% of water, polyvinyl alcohol (PVA) 22.5 to 33.5%, starch 8 to 12%, sugar 2 to 4%, soap 3 to 7%, glue 1 to 3, based on the weight of the main film layer %, Latex 3 to 7% and silicone oil 0.5 to 2% were mixed and dissolved at 80 to 100 ° C., put into a roller with a thickness of about 20 to 100 μm, and withdrawn at a speed of 3 to 5 m / min to 60 to 80 After transfer of the desired pattern by gravure, offset or silkscreen printing on the main film layer dried under hot air condition and cooled by cold air, transfer prepared by coating a flexible material of transparent paint, lacquer, prima or resin film.