PROCESS OF MANUFACTURING A CURVED MEMBER HAVING A HIGH-GRADE DESIGN SURFACE AND MEMBER MANUFACTURED BY THE PROCESS
First Claim
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1. A process of manufacturing a curved member having a high-grade design surface, comprising the steps of:
- (1) preparing a sheet having a high-grade design surface by injection compression molding a resin material containing a thermoplastic resin (step (1));
(2) preheating the sheet at a temperature of (Tg+5)°
C. to (Tg+70)°
C. (Tg(°
C.) is the glass transition temperature of the resin material) to soften it (step (2)); and
(3) applying pressure to the softened sheet to curve the high-grade design surface (step (3)).
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Abstract
It is an object of the present invention to provide a process capable of manufacturing various types of curved members having a high-grade design surface which are used as glazing members for means of transport such as automobiles at a low cost.
The present invention is the process of manufacturing a curved member having a high-grade design surface, comprises the steps of:
- (1) preparing a sheet having a high-grade design surface by injection compression molding a resin material containing a thermoplastic resin;
- (2) preheating the sheet at a temperature of (Tg+5)° C. to (Tg+70)° C. (Tg(° C.) is the glass transition temperature of the resin material) to soften it; and
- (3) applying pressure to the softened sheet to curve the high-grade design surface.
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Citations
16 Claims
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1. A process of manufacturing a curved member having a high-grade design surface, comprising the steps of:
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(1) preparing a sheet having a high-grade design surface by injection compression molding a resin material containing a thermoplastic resin (step (1)); (2) preheating the sheet at a temperature of (Tg+5)°
C. to (Tg+70)°
C. (Tg(°
C.) is the glass transition temperature of the resin material) to soften it (step (2)); and(3) applying pressure to the softened sheet to curve the high-grade design surface (step (3)). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification