JPH0232438Y2 - - Google Patents

Description

[Detailed description of the invention] This invention utilizes decorative transparent synthetic resin boards that are suitable for colored painting, especially the aesthetic effect produced by applying colored coating to the surface, and uses various transparent decorative boards as a decorative board. This invention relates to synthetic resin plates used for decoration.

As this type of decorative board, a translucent synthetic resin board made of a vinyl chloride homopolymer has been commonly used. This is because vinyl chloride homopolymer has excellent physical and chemical properties, so when applying colored coating, the resin surface is not attacked by ink or paint, and it is also This is based on the fact that it has good adhesion and fixing properties.

However, the processing temperature of vinyl chloride homopolymer is close to the thermal decomposition temperature, and the appropriate processing temperature range is narrow.
It has various processing problems such as slow gelation rate, and is unsuitable for thermal processing such as embossing, vacuum forming, and pressure forming.

For this reason, when it is necessary to apply an uneven or wavy pattern to the surface of a decorative board, or to create a decorative board by bending it, it is necessary to use vinyl chloride monomer and other materials. A translucent synthetic resin plate made of a vinyl chloride copolymer obtained by copolymerization with a monomer is used. By copolymerizing vinyl chloride monomer with other monomers, processing temperature is lowered and thermoplasticity is increased.
This is because the appropriate processing temperature range is expanded, the softening temperature is lowered and thermal deformation is increased, and thermoformability is greatly improved.

However, on the other hand, resin plates made of this type of vinyl chloride copolymer are inferior in terms of chemical resistance, oil and solvent resistance, etc., so if the surface is colored with ink or paint, A new drawback arises in that the surface is attacked by solvents, especially ketone solvents, and especially when the ink or paint is translucent, the transparent color appears unevenly.
Problems have arisen in that the appearance is significantly impaired and the decorativeness is poor.

This idea was created in view of the above circumstances, and it is possible to apply a colored coating by mutually complementing the drawbacks of vinyl chloride homopolymer and vinyl chloride copolymer. To provide a decorative light-transmitting synthetic resin board suitable for color painting, which has good adhesion and fixing properties for ink and paint, and excellent thermoformability, without damaging the surface even when painted. purpose.

In order to achieve this objective, this invention has been developed to cover the surface of a transparent substrate made of a vinyl chloride copolymer with good thermoformability with a thin film or plate-like transparent surface coating made of a vinyl chloride homopolymer. It is characterized in that the layers are laminated and integrated to form a circular laminated plate structure.

Hereinafter, the configuration of this invention will be explained in detail with reference to illustrated embodiments.

1 and 2, reference numeral 1 indicates a decorative transparent synthetic resin board according to the present invention, and this synthetic resin board 1 includes a substrate 2 and a surface coating layer laminated and integrated on the surface of the substrate 2. It is composed of 3 and 3.

The substrate 2 is made of a vinyl chloride copolymer with good thermoformability, and is generally colorless and transparent, but it may also be colored and transparent to further improve decorativeness. good. Examples of the vinyl chloride monomer used as the substrate 2 include ethylene, vinyl acetate, ethylene-vinyl acetate, vinylidene chloride, acrylic acid or methacrylic acid and its ester, and maleic acid. Examples include acids and their esters, acrylonitrile, etc. In particular, when the substrate is made of vinyl chloride-ethylene copolymer or vinyl chloride-vinyl acetate copolymer, they have excellent transparency, so
It can sufficiently transmit light and exhibit an excellent appearance. In particular, a substrate made of vinyl chloride-ethylene copolymer is suitable because it has an excellent surface smoothness and a good gloss.

On the other hand, the surface coating layer 3 is made of vinyl chloride homopolymer, and may be either colorless and transparent or colored and transparent. As mentioned above, since vinyl chloride homopolymer has poor thermoformability, the thickness of the scarlet cover layer 3 is determined to be a thin film or a thin plate so as not to impair the good thermoformability of the substrate 2. In particular, the thickness is preferably 0.5 mm or less.

The coating layer 3 is laminated and integrated on the surface of the substrate 2 by heating and pressing. It goes without saying that this heating and pressurization is carried out within a temperature range in which the coating layer 3 made of vinyl chloride homopolymer does not thermally decompose.

When the synthetic resin board 1 having such a structure is to be colored with a pattern 4 or the like, it is applied to the surface on the coating layer 3 side as shown in FIG. The vinyl chloride homopolymer that makes up this coating layer 3 has excellent chemical resistance and oil and solvent resistance, and can be applied not only to inks and paints that do not contain ketone solvents, but also to those that contain them. The surface will not be attacked even if
It also has good fixing properties. Therefore, even if the ink or paint is translucent, a beautiful colored state can be achieved without causing uneven coating. The colored ink containing a ketone solvent is generally used because the colored ink has good adhesion and fixability to the resin surface.

On the other hand, when the uneven pattern 5 or the wavy pattern is to be applied to the synthetic resin plate 1 by thermal processing, the pattern is applied to the substrate 2. Vinyl chloride copolymers have excellent thermoformability, so they can easily form beautiful uneven patterns. Incidentally, the formation of the uneven pattern or the wavy pattern may be performed simultaneously in the process of laminating and integrating the coating layer 3 onto the substrate 2.

FIGS. 4 and 5 show a specific example in which the synthetic resin board 1 according to the invention is colored and coated to create a decorative board giving a stained appearance.

In this decorative board, on the surface of the coating layer 3 made of vinyl chloride homopolymer, boundary lines 6 are formed in a build-up shape using black colored ink, and the boundary lines 6 are excluded. Colored coatings 7, 7', 7'', etc., including at least translucent ones, are formed using colored ink on the board surface of the parts.And these colored coatings 7, 7', 7''... are not stained. In order to create a decorative effect, the border lines 6 are made in different colors.

On the other hand, a concavo-convex pattern 5 is provided on the back surface of the substrate 2 made of a vinyl chloride copolymer in order to enhance the decorative effect.

The above-mentioned decorative board has a stained-like atmosphere created by the boundary lines 6 drawn on the surface of the coating layer and the colored coatings 7, 7', 7'', etc., and the transmitted light forms the uneven pattern 5. This combination of refraction and diffusion creates a stained-like decorative design that is excellent in appearance.

As explained above, the decorative transparent synthetic resin board suitable for color painting according to the present invention has one side formed with a transparent coating layer made of vinyl chloride homopolymer, so this coating layer By applying a colored coating to the surface, erosion of the surface is prevented even when corrosive inks or paints are used, and a colored coating finish with an even and beautiful appearance can be obtained. The fixability of ink and paint is also extremely good, and a beautiful colored state can be achieved.

In addition, since the surface coating layer is formed in the form of a thin plate or film, the thermoformability of the substrate made of vinyl chloride copolymer is not impaired, and the whole can be easily thermoformed into any desired shape. Furthermore, it is possible to freely create uneven patterns, waveform patterns, etc. on the back side of the substrate. Therefore, it is possible to create an extremely highly decorative appearance in which the coloring effect of colored coating and the geometrical decorative effect of heat processing are in harmony, and can be used for various decorations. It is possible to significantly expand the range of use as a board and improve its versatility.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is a cross-sectional view thereof, and Fig. 3 is a synthetic resin board shown in Fig. 1, with colored coating applied to the front surface and an uneven pattern on the back side. FIG. 4 is a perspective view of a stained decorative plate made of the synthetic resin plate of the present invention, and FIG. 5 is a partially sectional view thereof. DESCRIPTION OF SYMBOLS 1...Synthetic resin board, 2...Substrate, 3...Surface coating layer, 4...Design, 5...Irregular pattern, 6...Boundary drawing line, 7, 7', 7''...Colored coating layer.

Claims (1)

[Claims for Utility Model Registration] (1) A thin plate-like or thin-film-like light-transmitting surface made of a vinyl chloride homopolymer on the surface of a light-transparent substrate made of a vinyl chloride copolymer with good thermoformability. A decorative transparent synthetic resin board suitable for color painting, characterized by an integrated coating layer. (2) A decorative light-transmitting synthetic resin board suitable for color painting as set forth in claim 1, wherein the substrate is made of a vinyl chloride-ethylene copolymer. (3) A decorative light-transmitting synthetic resin board suitable for color painting according to claim 1, wherein the substrate is made of a vinyl chloride-vinyl acetate copolymer. (4) A decorative light-transmitting synthetic resin board suitable for color painting according to any one of claims 1 to 3 of the claims for utility model registration, wherein the surface coating layer has a thickness of 0.5 mm or less.