JPS62142633A - Manufacture of synchronizing sheet for molding - Google Patents

Abstract

PURPOSE:To enable an improvement in synchronous accuracy of pattern printing, molding properties and resistance to weather of a molded article, by a method wherein pattern printing is applied to a synthetic resin layer which has been formed on a synthetic resin film, whose dimensional stability is high, and are superior in the resistance to weather and molding properties, and the film is peeled off after lamination of a synthetic resin sheet, whose molding properties are favorable, on the layer. CONSTITUTION:As printing 3 of a pattern is applied to a synthetic resin layer 2, whose resistance to weather and molding properties are excellent, formed on a synthetic resin film 1, whose dimensional stability is high, through casting or laminating, elongation of the synthetic resin layer 2 based on heat at the time of the printing is prevented by the synthetic resin film 1. As a synthetic resin sheet 4, whose molding properties are favorable, is laminated on the same, the elongation based on the heat at the time of the lamination is prevented. As the synthetic resin film 1 and synthetic resin layer 2 are in a temporary adhesion state, whose adhesive strength is weak, when the synthetic resin film 1 is peeled off, a synchronizing sheet for molding, whose resistance to weather and molding properties are favorable, is obtained.

Description

[Detailed description of the invention]

[Field of Industrial Application] The present invention relates to a method for producing a molding tuning sheet that has high pattern tuning accuracy and has good weather resistance and moldability. [Prior Art] In order to manufacture plastic molded products that have a pattern printed that matches the shape of the product, a so-called matching sheet for molding is prepared, and this is molded by means such as vacuum forming to make the product. It is said that Conventionally, there are various methods for producing a molding tuned sheet, but each method has its own drawbacks. First, the method of directly printing on the surface of a synthetic resin film with good moldability and then laminating a synthetic resin sheet with good moldability on the surface is difficult because the sheet stretches due to the heat during printing and lamination. The printing is often deformed. The tuning sheet obtained by using a synthetic resin film with high dimensional stability to prevent stretching of the sheet, directly printing on the back side, and then laminating a sheet of synthetic resin with good moldability, The sheet does not stretch and the pattern synchronization accuracy is high, but the moldability is poor.
This is because, in general, synthetic resin films with high dimensional stability do not have good moldability. Therefore, a method was devised in which a transfer film is manufactured using a synthetic resin film with high dimensional stability, and a pattern is transferred to a synthetic resin sheet with good moldability. Although this makes it possible to achieve both dimensional stability and moldability, the abrasion resistance of printing is poor because the ink layer is exposed on the surface. In order to ensure wear resistance, after transferring the design to the back side of a synthetic resin film with good moldability using the above transfer film,
It would seem to be a good idea to laminate synthetic resin sheets with good moldability, but since the heat during lamination stretches the film, the printed pattern often becomes deformed.

[Problems to be solved by the invention]

The purpose of the present invention is to improve the drawbacks of the above-mentioned conventional methods of manufacturing tuning sheets for molding, ensure dimensional stability during printing and lamination during manufacturing, improve synchronization accuracy of pattern printing, and improve molding. It is an object of the present invention to provide a method for producing a molding conforming sheet having good properties and molded articles having excellent weather resistance. R Plate Goshokan

[Means to solve the problem]

To explain with reference to the drawings, as shown in FIG. 1, the method for producing a molding conforming sheet of the present invention is as follows: A resin layer 2 is formed by casting or thermal lamination, a pattern is printed 3 on this synthetic resin layer 2 with excellent weather resistance and moldability, and a synthetic resin sheet 4 with good moldability is further applied on top of this. After lamination, as shown in FIG. 2, the synthetic resin film 1 with high dimensional stability is
It is characterized by peeling off. Suitable synthetic resin films with high dimensional stability include films selected from polyester, polycarbonate and polyimide. As the material for forming the synthetic resin layer having excellent weather resistance and moldability, polyvinyl chloride or polymethyl methacrylate may be used. As the synthetic resin sheet having good moldability, sheets selected from polyvinyl chloride, ABS, polyethylene, polypropylene, EVA, polymethyl methacrylate, polystyrene, and nylon can be suitably used. The pattern may be printed by gravure or any other arbitrary method using ordinary printing ink. [Function] As shown in Fig. 1, a pattern is printed on a synthetic resin layer 2 with excellent weather resistance and moldability formed by casting or thermal lamination on a synthetic resin film 1 with high dimensional stability. 3, the synthetic resin film 1 with high dimensional stability is prevented from elongating the synthetic resin layer 2, which has excellent weather resistance and moldability, due to heat during printing, and printing can be performed while maintaining dimensional stability. . Since the synthetic resin sheet 4 having good moldability is laminated on top of this, elongation due to heat during lamination is prevented, and lamination is also carried out in a state where the dimensions are stable. Since the synthetic resin film 1 with high dimensional stability and the synthetic resin layer 2 with excellent weather resistance and moldability are in a temporary adhesion state with weak adhesive strength, as shown in Fig. 2, the synthetic resin film 1 with high dimensional stability If the film 1 is peeled off, a molding tunable sheet with good weather resistance and moldability can be obtained.

【Example】

50μ thick polyester film “Lumirror 5-10” (Toshi) as a synthetic resin film with high dimensional stability
On top of that, a layer of polyvinyl chloride lN-1 with a thickness of 50μ is used as a layer of synthetic resin with excellent weather resistance and moldability.
A layer of 4J (Nippon Carbide) was formed by casting. A pattern was printed on this polyvinyl chloride layer by silk screen printing. Furthermore, as a sheet of synthetic resin with good moldability, an ABS sheet R201J (Sambo) with a thickness of 500μ was heat-pressed on top of this at a temperature of 200'C, a pressure of 40 Kl/crA, and a time of 3 minutes. Laminated. The polyester film was peeled off to obtain a molding tuning sheet. This sheet showed good formability when formed by vacuum forming, and the vacuum formed product had excellent weather resistance. Effects of the Invention By using the method for manufacturing a synchronized molding sheet of the present invention, it is possible to ensure dimensional stability during printing and lamination during manufacturing, print patterns with high synchronization accuracy, and improve moldability. A good conformal sheet for molding can be obtained. The molded product obtained by molding this tuning sheet has good weather resistance because the surface layer is made of a material with good weather resistance.

[Brief explanation of drawings]

The drawings are schematic cross-sectional views showing the steps of the method for producing a molding tuning sheet of the present invention, and FIG. Figure 2 shows the stage in which a layer of synthetic resin is formed, a pattern is printed on this layer, and a synthetic resin sheet with good moldability is further laminated on top of this. The stages of peeling off the film and manufacturing a molding tunable sheet are shown respectively. 1...Synthetic resin film with high dimensional stability 2...Synthetic resin layer with excellent weather resistance and moldability 3...Picture printing

Claims (4)

[Claims] (1) A layer of synthetic resin with excellent weather resistance and moldability is formed on a synthetic resin film with high dimensional stability by casting or thermal lamination, and a layer of synthetic resin with excellent weather resistance and moldability is formed on the synthetic resin film with high weather resistance and moldability. A method for producing a molding tuning sheet, which comprises printing a pattern, laminating a synthetic resin sheet with good moldability thereon, and then peeling off the synthetic resin film with high dimensional stability. (2) The method for producing a molding tuning sheet according to claim 1, which is carried out using a film selected from polyester, polycarbonate, and polyimide as the synthetic resin film with high dimensional stability. (3) As a synthetic resin with excellent weather resistance and moldability,
2. The method for producing a moldable tuning sheet according to claim 1, which is carried out using polyvinyl chloride or polymethyl methacrylate. (4) As a synthetic resin sheet with good moldability, polyvinyl chloride, ABS, polyethylene, polypropylene, EV
A method for producing a molding conforming sheet according to claim 1, which is carried out using a sheet selected from A, polymethyl methacrylate, polystyrene, and nylon.