JP2003175568A - Decorative film and thermoplastic resin sheet with high brightness - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thermoplastic resin sheet with a high brightness which, without performing spray coating for providing a metallic color development suppressing gloss, can provide a metallic color development with a high brightness being equal to it and is suitable for vacuum molding. <P>SOLUTION: A decorative film prepared by applying solid printing or coating of an ink comprising a glitter powder (an aluminum powder) and a thermoplastic resin binder as essential ingredients on one face of a transparent thermoplastic resin film is used. The film is heatwelded and integrated with a thermoplastic resin sheet by making the solid printed or coated face inside. As the ink layer formed by printing or coating is under a condition where the glitter powder is arranged in lines, it becomes a high brightness. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a high-intensity thermoplastic resin sheet suitable for vacuum forming applications.

[0002]

2. Description of the Related Art In order to impart a metallic color with suppressed gloss to the surface of a resin molded product, a resin filled with a glittering powder such as a metal powder is used for molding. But,
Because of this, it is difficult to impart high-intensity color development, and in such a case, a paint containing glittering powder is spray-coated on the surface of the molded product. For example, a thermoplastic resin sheet is vacuum formed into a predetermined shape, and then spray coating is applied to the surface of the molded product to finish the product. There is also a method of finishing by attaching a metal vapor deposition foil to the molded product, but in this case, although a feeling of brightness can be obtained, since it has a glossy metallic tone, it is different from the metallic texture by painting.

[0003]

The problem to be solved by the present invention is to provide a molded product with a high-luminance metal coloration which is comparable to that without spray coating in order to impart a metal coloration with suppressed gloss. A high-brightness thermoplastic resin sheet suitable for vacuum forming is provided.

[0004]

In order to solve the above-mentioned problems, a high-intensity thermoplastic resin sheet according to the present invention comprises an ink containing a glittering powder and a thermoplastic resin binder as essential components of a transparent thermoplastic resin film. A decorative film with solid printing or coating on one side is used. The film is heat-bonded to a thermoplastic resin sheet with the solid printing or coated surface facing inward.

The above-mentioned decorative film is obtained by solid-printing or coating the ink having the glittering powder and the thermoplastic resin binder as the essential components on one surface thereof, so that the ink layer has the glittering powder aligned. is there. The thermoplastic resin sheet according to the present invention obtained by heat-sealing this decorative film maintains the aligned state of the glittering powder, and a molded product obtained by vacuum molding the thermoplastic resin sheet also has the glittering property. Maintain powder alignment. This makes it possible to impart a high-luminance appearance similar to spray coating of a coating containing glittering powder. On the other hand, when the resin filled with the glittering powder is molded, the glittering powder is randomly dispersed in the molded product, so that the light hitting the surface of the molded product causes irregular reflection, and it is difficult to obtain high brightness.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out the present invention, an ink to be printed / applied to a transparent thermoplastic resin film contains a glittering powder and a thermoplastic resin binder as essential components, and more specifically, a glittering powder. Contains a thermoplastic resin binder and an organic solvent. A general paint ink may be added for color adjustment. This ink is solid-printed / coated on one surface of a transparent thermoplastic resin film to form a decorative film. The printing / coating mentioned here is a method such as so-called gravure printing, microgravure printing or roll coating printing. The transparent thermoplastic resin film is made of acrylic resin, polyvinyl chloride, polyethylene terephthalate, polycarbonate or the like, and is preferably a transparent film having a light transmittance of 40% or more. The glittering powder is a powder of aluminum, mica, glass or the like, and may contain a trace amount of pigment in order to improve color development.

The above decorative film is heat-fused and integrated with a thermoplastic resin sheet with its solid printing / application surface facing inward. The thermoplastic resin sheet is ABS, AAS, AES
It is made of styrene resin such as olefin resin such as polypropylene and polyethylene. Here, the thermoplastic resin binder, which is an ink component, also serves as an adhesive layer for attaching the decorative film to the thermoplastic resin sheet. In order to increase the adhesive strength, another adhesive layer may be added between the printed / applied ink layer and the transparent thermoplastic resin film and between the ink layer and the thermoplastic resin sheet. The thermoplastic resin sheet may be a single layer, or may have a two-layer structure of a thin surface layer to which a decorative film is attached and a thick base layer or more, and the surface layer may be a coloring layer for color adjustment.

[0008]

[Example] On one surface of an acrylic resin film (thickness: 50 μm), the ink containing the components shown in Table 1 was solid-printed by a gravure printing machine to prepare a decorative film.

[0009]

[Table 1]

A two-layer ABS resin sheet having a surface layer as a coloring layer was coextrusion-molded, and at that time, the above-mentioned decorative film was laminated on the two-layer ABS resin sheet with the ink printing surface facing inward and welded together.

Compared with a conventional product in which an acrylic resin film is laminated on an ABS resin sheet obtained by filling a resin with a pigment and a glittering powder, and extruding the resin, the sheets of the above-mentioned examples are
The brightness was high when a clear difference in brightness was observed by visual observation. Also, the vacuum-formed product had an appearance comparable to that of the spray-painted product.

[0012]

As described above, the thermoplastic resin sheet according to the present invention retains high-luminance metal coloration with suppressed gloss, without depending on spray coating. The vacuum-formed product does not need to be spray-painted on the finish, and the fact that the painting process can be omitted is extremely useful for environmental hygiene.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4F006 AA12 AA15 AA17 AA22 AA35                       AA36 AA58 AB24 AB73 AB74                       AB76 BA15 CA07 DA03 DA04                 4F100 AK01A AK01B AT00A AT00C                       BA02 BA03 BA10C CA13B                       CC01B EC03 EH46 HB31                       JB16B JB16C JL01 JN01A                       JN24B

Claims (2)

[Claims] 1. A transparent thermoplastic resin film, on one side of which a solid ink is applied or printed with an ink containing a glittering powder and a thermoplastic resin binder as essential components, which is for sticking to a thermoplastic resin sheet. Makeup film. 2. A high-intensity thermoplastic resin sheet obtained by heat-sealing the film according to claim 1 to a thermoplastic resin sheet with the solid printing or coated surface facing inward.