JPH0441228A - Manufacture of synthetic resin molded product - Google Patents

Abstract

PURPOSE:To obtain a thermoplastic synthetic resin molded product whose surface is beautifully decorated or modified by applying an adhesive to a film or sheet composed of a thermoplastic synthetic resin to laminate the film or sheet to a plate or sheet of a thermoplastic resin and subjecting the formed laminate to vacuum molding, pressure forming or embossing molding. CONSTITUTION:An adhesive is applied to a film composed of a colorless or colored thermoplastic synthetic resin susceptible to vacuum molding, pressure forming or embossing molding, for example, polyvinyl chloride, polystyrol or polyethylene. The coated film is laminated to a plate or sheet composed of a thermoplastic synthetic resin susceptible to vacuum molding, pressure forming or embossing molding by the adhesive applied to said plate or sheet. The film laminated plate or sheet is subjected to usual vacuum molding, pressure forming or embossing molding. By this method, a molded product whose surface is beautifully decorated or modified is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a method for manufacturing a thermoplastic synthetic resin molded product whose surface is beautifully decorated or whose surface has been modified.

[Prior art] It is widely practiced to obtain molded products by molding thermoplastic synthetic resin plates or sheets in a vacuum, under pressure, or by embossing. To add color, pattern, unevenness, etc., the general method is to color the entire synthetic resin of the board or sheet with pigments, etc., and to add luster, heat molding is also used. It is necessary to select a thermoplastic synthetic resin that does not lose its luster.■ If a pattern is to be added, print it on a board or sheet,
Alternatively, methods such as printing on the molded product after molding may be used, and in the case of (■) above, the molded product may also be painted.

(2) To provide unevenness, a method is used in which the surface of the plate or sheet is made in advance by using a roll with unevenness during the production of the plate or sheet, and then the surface is molded. Both methods require complicated steps and have various limitations.

Next, the meaning of surface modification is weather resistance, surface hardness, non-adhesiveness, etc. In order to obtain these physical properties,
I had to choose a synthetic resin for the board or sheet.

[Problem to be solved by the invention] To easily and easily produce a wide variety of products and small quantities of vacuum, compressed air, and embossed thermoplastic synthetic resin products with beautifully decorated or surface-modified surfaces. It is something.

[Means for solving the problem] Thermoplastic synthetic resins, such as polyvinyl chloride, polystyrene, acrylic, polyacrylonitrile, which are colorless or colored, printed or unprinted, and can be molded by vacuum, pressure, or embossing. A film made of polyvinylidene fluoride, polypropylene, polyethylene, etc. is coated with an adhesive and a release paper is attached to the film. Alternatively, an adhesive processed product of the colorless or colored thermoplastic synthetic resin film or sheet is printed.

The adhesive-treated film or sheet is formed into a plate or sheet made of thermoplastic synthetic resin, such as polyvinyl chloride, polystyrene, acrylic, ABS, AS, polyacrylonitrile, polypropylene, polyethylene, etc., which can be molded in vacuum, pressure, or by stamping. , and are pasted together using the adhesive coated on them. The plate or sheet to which the film is bonded in this manner is molded using conventional vacuum, pressure, or embossing. As a result, a molded product with a beautifully decorated or surface-modified surface is obtained.

The adhesive applied here is preferably an acrylic two-component adhesive.

[Function] By the method of the present invention, A) By laminating a film or sheet of the desired color to a natural or arbitrarily colored board or sheet, a desired surface can be created using a board or sheet of any color. You can get colored molded products.

B) By printing patterns such as wood grain, stone grain, and geometric patterns on a film or sheet, a molded product with those patterns drawn on the surface is obtained.

C) A molded product with fine irregularities on the surface is obtained by applying a film or sheet with fine irregularities.

D) A transparent or translucent molded product that does not transmit ultraviolet rays is obtained by pasting a transparent or semitransparent film or sheet that does not transmit ultraviolet rays to a transparent or semitransparent plate or sheet that transmits ultraviolet rays.

E) A film or sheet with good weather resistance, such as acrylic or polyvinylidene fluoride.A molded product with good weather resistance can be obtained by pasting a film on a material with poor weather resistance, such as polystyrene or ABS.

Applications such as this are possible.

[Example 1 1. Red, green, blue, and yellow vinyl chloride films were coated with adhesive, and these were bonded to white impact-resistant polystyrene boards of 3 mm thickness, 400 mm x 500 mm, and 100 sheets each were manufactured. Then, a tray was molded.

This results in trays with white on the back and various colors on the front. We easily obtained 100 schools each.

2. Vinyl chloride with marble pattern printed on it Coat the film with adhesive and apply it automatically. Natural color impact resistant polystyrene 4 mm thickness 600mm x 800mm board It is pasted together to form the shape of a bathroom vanity. I molded it. Bathroom vanity with marble pattern get.

3. A vinyl chloride film with skin-like irregularities was coated with an adhesive and bonded to a 3 mm ABS plate 400 mm x 500 mm thick to form an attache case. An attache case with skin-like irregularities on the surface is obtained.

4. Transparent acrylic that does not allow UV rays to pass through A viscous film containing a UV absorber. Semi-transparent material coated with adhesive and transparent to ultraviolet rays Glued to polystyrene, fluorescent light The cover was molded.

You can get a fluorescent light cover that does not let UV rays through. It will be done.

[Effects of the Invention 1 The present invention can be applied to a wide variety of applications as described above. The film or sheet used here is generally manufactured and used widely, so it is easy to obtain, and since coloring and printing can be done in the form of a film or sheet, there is no need to handle bulky items such as boards. We can meet requests for high-mix, low-volume production without any problems.

Claims (1)

[Claims] Colorless or colored, printed or unprinted untreated thermoplastic synthetic resin film or The sheet is coated with adhesive and thermoplastic composite Paste with a resin board or sheet, The sheet is formed by vacuum, pressure or embossing. A thermoplastic synthetic resin molded product featuring Production method.