JPH068254A - Shaping film and production thereof - Google Patents

Abstract

(57) [Summary] [Structure] A transferable pattern is provided on the sheet, the sheet is embossed, the recesses are colored by wiping, and then an ionizing radiation-curable resin is applied, and further thereon. A method for producing a shaped film, which comprises: laminating a film on a substrate, curing the resin, and then peeling off the wiping sheet; and the shaped film. [Effect] Compared with the conventional technique, the shaped film can be manufactured by a simpler method. Further, the shape-imparting film manufactured by this method can be colored at the same time as the concave-convex shape-molding and the pattern can be transferred to it, and a decorative plate having a high design can be manufactured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patterning film for forming a concavo-convex pattern on the surface of a decorative plate and the like and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, in forming an uneven pattern such as a wood grain conduit pattern on the surface of a decorative plate, a releasable film having an uneven shape corresponding to a desired uneven pattern, that is, a pattern-forming film has been used. Came. As a method for producing such a shaped film, a method of casting silicone resin on the surface of a wood grain original document, laminating a base material such as a film, and molding the silicone resin together with the film, or polyvinyl chloride (PVC) on an embossing drum ) A method is known in which a sol is filled, a film is laminated and adhered, and the sol is gelated on the film surface to form an uneven shape.

[0003]

However, the method using the silicone resin described above requires a prototype such as a wood grain original for molding the silicone resin, so that the uneven pattern that can be imprinted is limited. In addition, the method using the above PVC sol has a problem in that the gelled PVC has insufficient hardness, so that the uneven shape becomes unclear.

An object of the present invention is to solve these problems of the prior art, and specifically to produce a shaped film having sufficient hardness by a simple method.

[0005]

In order to solve the above-mentioned problems, the present invention is to coat an embossed sheet with an ionizing radiation-curable resin and cure the resin by irradiating it with ionizing radiation. After that, the sheet is peeled off, and a method for producing a shaped film is disclosed. It is a preferred embodiment of the present invention that the recesses of the sheet are colored by wiping, a film is laminated on the ionizing radiation curable resin, and a transferable pattern is applied to the surface of the sheet.

The present invention will be described in detail below. As the sheet to be embossed, a thermoplastic resin sheet which can be given a shape by thermocompression molding, such as polyvinyl chloride, polypropylene, polyethylene, ethylene-vinyl alcohol copolymer or a composite of these with polyethylene terephthalate (PET) It is preferable to use the above. It is also possible to carry out a surface treatment with a coating agent containing a release agent between the sheet and the resin so that the ionizing radiation curable resin layer can be easily peeled off from the sheet after curing. Further, this coating agent also works to facilitate peeling from the ionizing radiation-cured resin layer during pattern transfer to the final product.
As such a coating agent, a commonly used one may be used. For example, a release agent such as a fluororesin, various waxes and silicones may be a known vehicle such as an acrylic resin, a fibrin resin, a vinyl resin or the like. What was added to can be used.

As the embossed shape, a wood grain conduit shape, a wood surface shape, a stone shape, a cloth shape, a grain shape, several μ to several tens μ
It is preferable that the linear precise geometric shape, the hologram embossed shape, etc. include those convex shapes and concave shapes, and the depth thereof is preferably in the range of several μ to 150 μ. The pattern provided on the sheet surface is preferably a pattern that is easily peeled from the sheet surface and the ionizing radiation curable resin layer,
Specifically, acrylic resin, fibrin resin, vinyl chloride resin, vinyl acetate resin, urethane resin, ionizing radiation curable resin and the like can be used.

[0008] As a method for processing the unevenness, a hot press embossing method which is usually used may be used, and various known presses and embossing machines such as a flat plate pressing machine and a roll embossing machine can be used. The wiping method may be a commonly used method, for example, a colored ink is applied to the entire uneven surface generated by uneven processing, and then the surface is an in-blade, air knife or a roller having a sponge, cloth or the like as a surface material. It can be carried out by wiping with, and removing the ink on the convex portions. It is desirable to select the ink used for wiping according to the final specifications of the decorative plate for imprinting, for example, if it is a melamine resin decorative plate, a melamine-based, acrylic-based, cellulose-based, or cellulose acetate-based ink. Is preferable, but if it is a DAP (diallyl phthalate) resin decorative board or a polyester resin decorative board, butyral type,
Cellulosic inks are preferred. The ink in the recess is transferred to the ionizing radiation curable resin applied on top of it, but regarding transfer of the ink, it is sufficient to use the releasability of the applied resin, and a special ink itself is used. Although not necessary, a release agent such as a silicone resin may be added to the ink to improve the release property from the sheet and the ionizing radiation curable resin layer.

As the ionizing radiation curable resin, an ultraviolet curable resin and an electron beam curable resin made of various acrylates such as unsaturated polyester and epoxy can be used. In order to apply these onto a wiped sheet, they can be coated by a method such as comma coating or roll coating. The resin is cured by irradiating it with an ultraviolet ray, an electron beam or the like depending on the characteristics of each resin.

It is also possible to dispose a base material film such as a polyester resin or a paper of 30 to 80 g / m ² on the resin material layer as a support for strengthening the shape-imparting film of the present invention. Is. The film or the like used at this time is preferably subjected to an easy adhesion treatment with a corona discharge treated urethane resin, an acrylic resin or the like in order to improve the adhesion with an ionizing radiation curable resin such as unsaturated polyester or various acrylates. Naturally, these films and the like are required to have a property of transmitting ionizing radiation. However, here, the peeling strength F _PS between the coating agent layer, the pattern layer, the wiping layer and the sheet to be embossed, the peeling strength F between the coating agent layer and the like and the ionizing radiation curable resin layer (cured)
_{The relationship} between the _PR and the peeling strength F _RB between the ionizing radiation curable resin layer and the transferred material (melamine decorative board, etc.) is F _PS <F _PR <F _RB
So that

The manufacturing of the shaped film of the present invention using the above-mentioned materials and methods is usually carried out by the following method. A transferable pattern is provided on the sheet, and the surface is embossed. Next, the embossed recesses are colored by wiping, an ionizing radiation curable resin is applied so as to fill the recesses, and a polyester resin or the like is further laminated thereon. After the film laminate thus obtained is irradiated with ionizing radiation, the wiping sheet is peeled off to obtain the patterning film of the present invention.

The shape-imparting film of the present invention is used to shape a decorative board such as a thermosetting resin decorative board or a polyester resin decorative board, or an electron beam curable resin or an ultraviolet curable resin applied on a substrate. It can be widely used as a mold. However, when an ultraviolet curable resin is used, it is necessary to use a film and an ink having a property of transmitting ultraviolet rays.

[0013]

[Example] A polyethylene terephthalate sheet 3 having a thickness of 38 μ was formed on a polyethylene terephthalate sheet 3 having a thickness of 100 μ (LDP
E) 2 was extrusion-coated (EC coat), and the transferable pattern 1 was provided thereon (FIG. 1A). Next, the embossing machine (depth 100 μ to 10 μ) having the convex portion of the wood grain conduit is used to form the concave portion on the sheet and the pattern (FIG. 1B), and the acrylic polyol and the blocked isocyanate (dissociation temperature 130 to 14
0 ° C) and methylolated melamine, formaldehyde,
Using a vehicle made of a β-stage condensate resin and a wiping ink 4 made of a color pigment (containing sepia and smears), the P
The recess of the ET sheet was wiped, and then a transparent medium made of cellulose acetate was coated on the entire surface (Fig. 1C).

UV curable resin 5 is applied to the printing wiping surface.
(XD509 manufactured by Dainichiseika Co., Ltd.) was applied at a coating amount of 30μ, the embossed portion was filled, and an easy-adhesion PET film 6 having a thickness of 75μ was applied.
(Teijin HP-7) is laminated and nipped (Fig. 1D), air is evacuated, and then UV irradiation device 7 is applied from the easy-adhesion PET film surface.
After further irradiating ultraviolet rays to cure the resin, the wiping sheet (2 and 3 in FIG. 1) is peeled off (FIG. 1).
E).

The thus-obtained film in the shape of a convex conduit is shown together with a separately prepared overlay paper 8, a melamine resin-impregnated decorative paper 9 on which a pattern is printed, a phenol resin-impregnated core paper 10, and a balance sheet 11. As shown in FIG. 2, the layers were sequentially laminated and subjected to thermocompression molding (135 ° C., 15 minutes, 90 kg / cm ² and cooling). As a result, a wiping high-pressure melamine decorative board having a faithful imprint of the shape of the conduit recess as shown in FIG. 3 and having the wiping ink adhered to the recess and having the pattern transferred was obtained.

[0016]

EFFECTS OF THE INVENTION The imprint film of the present invention is capable of faithfully reproducing uneven shapes such as wood grain conduit grooves as compared with conventional imprint films, and coloring not only uneven shapes but also recesses. And because the pattern can be transferred at the same time,
It is possible to manufacture a decorative board with high designability.

[Brief description of drawings]

FIG. 1 is a diagram showing a step of producing a shaped film of the present invention.

FIG. 2 is a diagram showing a step of shaping unevenness on a melamine decorative board.

FIG. 3 is a view showing a melamine decorative board with unevenness.

[Explanation of symbols]

1-Picture, 2-LDPE, 3-PET sheet, 4-Wiping ink, 5-UV curable resin, 6-Adhesive PET
Film, 7-UV irradiation device, 8-Overlay paper, 9
─ Decorative paper, 10 ─ Core paper, 11 ─ Balance sheet

Claims (5)

[Claims] 1. An embossed sheet is coated with an ionizing radiation curable resin, the resin is irradiated with ionizing radiation to cure the resin, and then the sheet is peeled off. Method for producing mold film. 2. The method for producing a shaped film according to claim 1, wherein the recesses on the embossed sheet surface are colored by wiping. 3. The patterning film according to claim 1, wherein a film which is transparent to ionizing radiation and can be bonded to the ionizing radiation curable resin is laminated on the coated ionizing radiation curable resin. Manufacturing method. 4. The method for producing a shaped film according to claim 1, wherein a pattern having transferability is provided on the embossed sheet. 5. A shaped film produced by the method according to claim 1.