JPH03230945A - Frp molded article - Google Patents

Abstract

PURPOSE:To catch brightness by visual sense from all angles regardless of the incident angle of light by forming a fine transparent film piece having luster of organic material and successively laminating a transparent resin layer with this transparent film pieces distributed therein, a colored resin layer and an FRP layer. CONSTITUTION:A bathtub A has a cross-sectional structure wherein a gel coat ing layer 4, a transparent resin layer with transparent film pieces 1a distributed therein, a colored resin layer 2 and an FRP layer 3 are successively laminated. The transparent resin layer 1 and the colored resin layer 2 are interposed be tween the gel coating layer 4 and an FRP layer 3. When incident light is trans mitted through the transparent gel coating layer 4, it reaches the transparent resin layer 1 and one part is reflected by the fine transparent film pieces 1a. While one part is transmitted through the transparent film pieces 1a and refracted, this reaches the colored resin layer 2 and color tone is represented. Gorgeousness of glistened lame tone appeals into visual sense from all angles regardless of the incident angle of light.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to FRP molded products such as bathtubs and counters, and more specifically to FRP molded products that exhibit gorgeous luxury due to unique light reflection and transmission phenomena. It is.

(Prior art) Conventionally, FRP molded products have been coated with a resin layer mixed with crushed stone as the surface layer of the colored resin layer, or resin mixed with mica foil as the surface layer of the colored resin layer to create pearlescent luster. Laminated structures with laminated layers are known.

In other words, the crushed natural stone texture creates a stone grain look, and the multiple reflections of light from the mica foil create pearlescent luster and iris.
Both have excellent decorative effects and high commercial value.

(Problems to be Solved by the Invention) Compared to stone-grained products, FRP molded products that exhibit pearlescent luster and iris have a bright and unique beauty.

By the way, the mica foil (5) is arranged in parallel in the resin layer (1) due to the specific gravity, that is, even if multiple reflections occur, only the directional specular reflection (X) is repeated. Figure 2).

Therefore, the angle of reflection is determined by the angle of incidence, and depending on the angle of incidence of the light and the relationship with vision, it may not be possible to capture the shine, and it is still not possible to arrange the reflection so that it can be captured from all angles. There is room for improvement.

An object of the present invention is to provide an FRP molded product that visually captures brilliance from any angle, regardless of the angle of incidence of light.

(Means for Solving the Problems) The present inventors have continued intensive research on a reflector that can replace mica foil.

As a result, it was discovered that distributing a glossy transparent film plate molded from an organic material in a transparent resin layer on a colored resin layer has a large effect on the directionality of reflected light, which led to the present invention. Ta.

That is, the present invention is characterized by a structure in which a transparent resin layer in which glossy fine transparent film pieces made of an organic material are distributed, a colored resin layer, and an FRP layer are sequentially laminated.

(Function) According to the present invention, brilliance could be visually captured from any angle, regardless of the angle of incidence of light.

This is because the specific gravity of the glossy fine transparent film pieces molded from an organic material is similar to the specific gravity of the base material of the transparent resin layer, and the distribution state is such that they are not arranged in parallel but are oriented in various directions. It is estimated that this distribution state causes diffused reflection.

(Effects of the Invention) As described above, the present invention provides that the specific gravity of the glossy fine transparent film pieces molded from an organic material is close to the specific gravity of the base material of the transparent resin layer, and the transparent film pieces can be moved in various directions. It was discovered that when light enters it, it reflects diffusely and scatters in various directions, making it possible to always visually catch the glittering reflected light from the background color.

Therefore, even if there is no consistency in the angular relationship between the incident angle of light and the visual sense, it was possible to provide a new FRP molded product that gives the impression of glittering and luxury.

Furthermore, like mica foil, a portion of the light passes through the transparent film piece, and as it goes deeper, it repeats further reflection and transmission, so the color tone changes, creating an elegant texture and elegance.

Moreover, since the transparent membrane piece is molded from an organic material, F
The difference in thermal expansion coefficient between the resin and the base material of the RP molded product is smaller than that of natural products, and no cavities or peeling phenomena occur between the transparent film piece and the resin after long-term use, ensuring durability. Can be maintained.

In addition, since transparent film pieces are easy to obtain, manufacturing costs and product prices can be kept low.

(Example) Next, embodiments of the present invention will be described based on the drawings.

In this example, a bathtub (A) is shown, and the bathtub (A) includes a gel coat layer (4), a transparent resin layer (1) with transparent film pieces (1a) distributed thereon, a colored resin layer (2), an FRP layer ( It has a cross-sectional structure in which 3) are sequentially laminated.

As is well known, the gel coat layer (4) is transparent and is made of a transparent unsaturated polyester resin mixed with an accelerator, a curing agent, etc., and has transparent film pieces (1a) distributed on the surface of the transparent resin layer (1). It is laminated to a thickness of about 0.1 mm to 0.5 mm.

The FRP layer (3) serves as a substrate, and is made opaque by adding an accelerator, a curing agent, an inorganic filler, and glass fiber to an unsaturated polyester resin, and is coated with a desired thickness on the back side of the colored resin layer (2). Laminated.

Between the gel coat layer (4) and the FRP layer (3),
A transparent resin layer (1) and a colored resin layer (2) are interposed therebetween.

The transparent resin layer (1) is made of transparent unsaturated polyester resin,
0.1mm~
Laminated to a thickness of about 5 mm.

The transparent film piece (LA) is a rectangular glossy film piece with a thickness of 10 microns to 100 microns and an area of 0.1 to 5 m square, and is a film piece containing other additives in an unsaturated polyester resin. Mixed.

The films constituting this transparent membrane piece (1a) are polyethylene terephthalate, polybutylene terephthalate, polyvinyl chloride, polyethylene, polypropylene, polycarbonate, ethylene-vinyl acetate copolymer, and polymethyl methacrylate.

Ionomer resins, polymethylpentene, polyvinyldene chloride, polyvinyl formal, acrylonitrile-styrene copolymers, nylon, polyimide, etc., as long as they are transparent and glossy, regardless of whether they are colorless or colored.
Any type can be used.

The colored resin layer (2) is made of an unsaturated polyester resin mixed with a colored pigment, an accelerator, and a curing agent, and has a coating composition of 0.1. mm
Laminate to a thickness of about 0.6 mm.

In the bathtub (A) of this example, when incident light passes through the transparent gel coat layer (4), it reaches the transparent resin layer (1), and a portion is reflected by the fine transparent film pieces (1a). A part of the light passes through the transparent film piece (1a) and reaches the colored resin layer (2) while being refracted, thereby expressing the color tone. The expression appealed to the glittering, glittery brilliance that could be seen from any angle, regardless of the angle of incidence of light.

This is because the transparent film piece (1a) is molded from an organic material and has a specific gravity (0.9-2) similar to the specific gravity (1-2) of unsaturated polyester resin. This is because the distribution state is oriented toward the direction of the light beam, causing diffused reflection (Y).

Moreover, it is also possible to freely adjust the thickness and area of the transparent film piece (1a). This is very effective in changing the size of the brightness and visually capturing the brightness even from a distance. In this example, a transparent gel coat layer is provided as a surface layer, but this is not necessary.

By the way, on both the front and back sides of the film, substances that give pearl luster and iris, such as fine mica foil treated with titanium oxide, are applied.
Coating is done so that the specific gravity does not fluctuate widely, and the above substance is applied to both the front and back sides of the transparent film piece (1a) by cutting, or the previous substance is coated with a large specific gravity to the resin material before film extrusion molding. It is also possible to mix the substance in an amount that does not vary in width, and to embed the substance in the transparent membrane piece (la) by cutting after extrusion molding.

With such a structure, the transparent film pieces (1a) oriented in random directions are not prevented from being mixed into the transparent resin layer (1),
Even if there is no consistency in the angular relationship between the incident angle of light and visual perception,
You can visually capture the pearlescent luster and iris, making it more beautiful.

[Brief explanation of drawings]

The drawings show examples of the FRP molded product of the present invention, with FIG. 1 being a vertical cross-sectional view of a bathtub, and FIG. 2 being an enlarged vertical cross-sectional view of the main parts of a conventional example. In addition, in the figure (1): Transparent resin layer (2): Colored resin layer (3): FRP layer (1a): Transparent film piece (4); Gel coat layer Patent applicant: Toto Kiki Co., Ltd.

Claims (1)

[Claims] An FRP molded product characterized by having a structure in which a transparent resin layer in which glossy fine transparent film pieces molded from an organic material are distributed, a colored resin layer, and an FRP layer are sequentially laminated.