JP3023930B2 - Transfer foil and method for forming matte or painted surface using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer foil and a matte surface or method using the same.

[0002]

2. Description of the Related Art Transfer foils used for makeup and painting of various materials including decorative base materials and plastic molded products are:
In general, a release sheet, a decorative layer, and an adhesive are provided on a transfer sheet on which a release layer is formed by applying wax or silicone so that the sheet is easily peeled off after transfer.

[0003] A part of the release agent adheres to the surface of the transfer layer transferred by the transfer foil to which the above-described release agent has been applied. This hinders the application of post-coating called “recoating”, which causes uneven coating and poor adhesion of the coating.

[0004] Such problems are more or less observed even when a release agent is not used. Even when recoating is not performed, the decorative surface after transfer is generally smooth, and a matte surface cannot be desired. There is also a problem that the adhesive strength between the transfer board and the release layer changes with the elapse of time, and the peel strength at the time of transfer tends to be not as desired.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a transfer foil which solves the above-mentioned problems, has a matte decorative surface obtained by transfer, and is easy to recoat.

The use of the transfer foil to form a matte surface or a painted surface on a decorative substrate is also an object of the present invention.

From another point of view, it is an object of the present invention to provide a new method for adjusting the peeling force.

[0008]

As shown in FIG. 1, an example of the transfer foil of the present invention is a transfer foil comprising a transfer board (1) having at least a release agent layer (2) provided thereon. Is formed of a material capable of causing peeling due to destruction in the layer, and the adhesive strength between the transfer board and the release agent layer is made higher than the peel strength in the layer of the release agent layer.

If necessary, an adhesive layer (4) is provided on the release agent layer (2). In FIG. 1, reference numeral (3) denotes a decorative layer, and (5) denotes a material to be transferred.

As the transfer board, known materials such as sheets and papers of polyester, polyvinyl chloride, cellulose acetate, polypropylene and the like may be used. It is preferred that the upper surface of the transfer sheet be subjected to an adhesion strengthening treatment such as a primer treatment or a corona discharge treatment, because the adhesion between the transfer sheet and the release agent layer becomes stronger.

As a material which can cause peeling in the layer, a material which has been conventionally used as a material for a peeling layer in a transfer foil, that is, a layer which is peeled off from a transfer board and migrates to a decorative substrate may be used. . When recoating,
It is preferable to use one having good adhesion to the paint applied to the surface of the transfer layer. Generally, acrylic resins, polyester resins, vinyl chloride / vinyl acetate copolymers, polyethylenes, cellulose resins, polyurethanes and the like may be used.

The decorative layer may be provided with a desired design by a known means such as printing a picture or depositing a metal.

The adhesive is appropriately selected in consideration of the transfer method and the material of the material to be transferred. For example, when transferring by a thermal transfer method such as hot stamping, acrylic resin,
Suitable are vinyl chloride / vinyl acetate copolymers, polystyrene, ionomers and the like.

The method for forming a matte surface according to the present invention using the above-mentioned transfer foil is characterized in that the above-mentioned transfer foil is adhered to a substrate to be decorated, and the transfer sheet is peeled off, so that the inside of the release agent layer is formed. This involves exfoliation due to destruction and exposing the fractured surface of the release agent layer remaining on the transfer object.

The method for forming a painted surface of the present invention utilizing the matte surface obtained in this manner is characterized in that the above-mentioned transfer foil is adhered to a substrate to be decorated, and the transfer board is peeled off, whereby a release agent layer is formed. Of the release layer remaining on the transfer receiving body to expose the fractured surface, and coating the exposed fractured surface.

FIG. 2 shows a cross section of the surface after painting. In this figure, reference numeral (6) denotes a coating film.

[0017]

The function of the transfer foil of the present invention is as shown in FIG. By peeling off the transfer sheet after transfer, peeling due to destruction occurs in the release agent layer, the layer is divided into two layers, one of which is removed together with the transfer sheet, and the other is placed on the transferred object, If there is a layer, it remains as a transfer layer.

For this reason, a large number of fine irregularities are formed on the fracture surface of the transfer layer, and a strong matte surface is formed. This fractured surface has no substance that repels paint such as wax, has a high anchoring effect, and the paint film adheres firmly when painted.

It goes without saying that the probability of occurrence of cohesive failure is determined by the balance between the strength of cohesion of the material and the adhesive strength between the transfer board and the object to be transferred. Therefore, among materials forming this layer, silica, alumina,
If powders such as calcium carbonate, barium carbonate, and shirasu balloon are added, this layer becomes brittle and is easily broken, and a large number of fine irregularities are formed on the fracture surface, resulting in a strong matte surface, and When the coating is performed, the adhesion with the coating film is further improved. The thickness of the layer that causes cohesive failure is preferably in a range that allows the fractured surface to have sufficient unevenness. The particle size of the particles is usually 0.1 to 10
A size of about μm may be selected.

[0020]

EXAMPLE A 26 μm thick polyester transfer table “T-
60 "(manufactured by Toray Industries Co., Ltd.), an acrylic release agent" 45 type "(manufactured by Showa Ink Industries, Ltd.) which adheres well to polyester, an acrylic printing ink" GG "(same as above) and an acrylic adhesive HS32 ”(same as above) was sequentially applied or printed by a gravure method, and dried at a temperature of 100 ° C. for 1 minute to obtain a transfer foil of the present invention. The release agent layer, decorative layer, and adhesive layer of the transfer foil all had a thickness in the range of 1 to 2 μm.

For comparison, an acrylic release agent "46-7 type" having good release properties for polyester.
Another transfer foil was manufactured in the same manner as described above, except that (Same as above) was used.

Using the above two types of transfer foils, heat transfer was performed on an ABS resin plate by a roll transfer machine (roll temperature: 200 ° C., material supply speed: 3 m / mim, roll pressure: 100 kg / 10 cm).

After the transfer board was peeled off, an acrylic urethane lacquer (manufactured by Nippon Paint Co., Ltd.) was spray-coated on the surface of the transfer layer of each ABS resin plate.
m (at the time of drying).

Each of the obtained decorative materials was subjected to a cellophane test in order to determine the degree of adhesion of the coating film. In this test, besides immediately after coating film drying,
The test was also performed after standing for 10 days at a humidity of 95%.

As the lacquer, instead of the above-mentioned acrylic urethane type, an acrylic type (made by Asahipen) was used, and other than that, a cosmetic material was manufactured under the same conditions as described above. The cellophane tape test was performed on the sample left for 10 days under the condition of 95% humidity.

The test results are shown in Table 1. In the table, those in which the coating film was not peeled off were evaluated as ○, and those in which the coating was partially peeled off were evaluated as △,
The thing which almost peeled was shown by x.

[0027]

[0028]

By using the transfer foil of the present invention, a matte transfer surface can be obtained, and by applying a coating thereon, a cosmetic having a coated surface on which the surface coating film is firmly adhered. Materials can be manufactured. The peel strength of the release agent layer is specific to the material, is almost constant, and the adhesive strength between the transfer board and the release agent layer can be significantly higher, so that the adhesive strength is slightly reduced during storage. Even if there is, there is no problem in using the transfer foil.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view for explaining how to use a transfer foil of the present invention.

FIG. 2 is a sectional view similar to FIG. 1, showing a painted surface formed by the method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer board 2 Release agent layer 3 Decorative layer 4 Adhesive layer 5 Transfer material

Claims (4)

(57) [Claims] In a transfer foil having at least a release agent layer provided on a transfer substrate, the release agent layer is formed of a material capable of causing peeling due to destruction in the layer. A transfer foil characterized in that the adhesive strength between them is higher than the peel strength in the release agent layer. 2. The transfer foil according to claim 1, wherein a release agent layer is formed on the surface of the transfer board after performing an adhesion strengthening treatment. 3. The transfer foil according to claim 1 is adhered to a substrate to be decorated, and the transfer board is peeled off, thereby causing delamination in the release agent layer within the release agent layer. A method for forming a matte surface, which comprises exposing a fracture surface of a remaining release agent layer. 4. The transfer foil according to claim 1 is adhered onto a substrate to be decorated, and the transfer board is peeled off, thereby causing delamination in the release agent layer within the layer of the release agent layer. A method for forming a painted surface, comprising exposing a fracture surface of a remaining release agent layer and applying a coating to the exposed fracture surface.