JPH0249910B2 - RITSUTAIKANOJUSURUHORIESUTERUSEIKEIHIN - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to polyester molded products such as decorative laminates, laminates, and cast products having a deep color tone.

[Conventional technology]

Using the gel coat method based on unsaturated polyester resin, colored laminates, decorative laminates, etc. can be industrially produced at low cost, and because the surfaces are finished in beautiful colors, they can be used for furniture, counters, interior decoration materials, etc. It is often used in practical applications such as bathtubs.

In general, molding materials in which a colored gel-coat resin layer is formed on a base material such as fiber-reinforced plastic, plywood, particle board, or slate board have a beautiful color tone, but the colored layer feels flat, and ceramics etc. It is not suitable for use as a substitute for ceramics, tiles, etc. because it does not have the same sense of depth.

[Problem that the invention seeks to solve]

In view of these circumstances, the present inventors conducted various studies with the aim of obtaining a polyester molded product with a deep color tone similar to that of ceramics using colored gel coat resin. A transparent polyester resin layer is placed on top of the mixed colored glass beads.

[Means for solving problems]

The glass beads used in the present invention have a diameter of
Glass beads of about 0.2 to 0.5 mm may be used, but colored glass beads should be used.

For coloring, the paint may be diluted with alcohol thinner or water, glass beads placed in it, stirred for several minutes, and dried while stirring.

The colored glass beads are mixed into an unsaturated polyester resin (colored gel coat layer). The colored gel coat layer is a transparent or translucent colored gel coat layer, and the glass beads and the colored gel coat layer may be colored in the same color system.

Usually, in the colored gel coat layer, it is preferable to add 0.2 to 2% by weight of pigment based on the unsaturated polyester resin.

The polyester molded article of the present invention thus molded will be explained with reference to the drawings.

1 is an unsaturated polyester resin layer mixed with glass beads 2, and a substrate 3 is provided below the unsaturated polyester resin layer.

The substrate 3 may be made of a suitable material such as reinforced plastic, plywood, particle board, or slate board. Further, an unsaturated polyester layer 4 may be interposed between the substrate 3 and the unsaturated polyester resin layer 1 mixed with glass beads.

A transparent polyester layer 5 is provided on the upper surface of the unsaturated polyester resin layer 1 mixed with glass beads 2. This transparent polyester layer 5 is for protecting the glass beads 2 which are raised on the upper surface of the unsaturated polyester 1.

Furthermore, FIGS. 3A and 3B show a three-dimensional object, for example, a bathtub formed using the polyester molded article of the present invention.

In the present invention, an unsaturated polyester resin layer of the same color mixed with colored glass beads is formed, so that the glass beads overlap vertically in the unsaturated polyester resin layer, giving the viewer a sense of beauty. At the same time, the glass beads have a deep color tone.

〔Example〕

Next, examples of polyester molded articles of the present invention will be described.

Example 1 part of the following colorant is mixed into 100 parts of unsaturated polyester.

Γ Colorant Unsaturated polyester 100 parts Titanium dioxide 98 parts Copper phthalocyanine green 2 parts Preparation of Γ colored glass beads Copper phthalocyanine green pigment 8 parts Acrylic resin 32 parts Methyl ethyl ketone 20 parts Xylol 40 parts Add to 3.0 parts of the paint obtained above a curing agent ( Mix 1.0 part of epoxy silane), add 5 parts of alcohol thinner to 0.5 part of this mixture to dilute it, add glass beads (0.2 to 0.5 mm in diameter), and mix for 5 minutes with a mixer (tumbler). Remove solvent. Then, baking is performed at 120°C for 30 minutes.

Green colored unsaturated polyester, green colored glass beads and methyl ethyl ketone peroxide were mixed, and the mixture was laid on a substrate and cured.

A transparent polyester resin was coated on the top surface of the unsaturated polyester mixed with the obtained glass beads to obtain a molded article.

The resulting molded product was beautiful and had a three-dimensional, embossed design.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the present invention, FIG. 2 is a sectional view of another embodiment, and FIGS. 3A and 3B are sectional views of a three-dimensional molded product of the present invention. 1... Unsaturated polyester resin layer, 2... Glass beads, 3... Substrate, 4... Unsaturated polyester layer, 5
...transparent polyester layer.

Claims (1)

[Claims] 1. A polyester molded product with a three-dimensional effect, characterized by forming an unsaturated polyester resin layer of the same color mixed with colored glass beads on a substrate, and a transparent polyester resin layer on the top surface of the unsaturated polyester resin layer.