| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a vacuum-formed product, transferring a fine uneven shape of embossing even by vacuum forming. SOLUTION: When a thermoplastic resin sheet 12 is vacuum drawn with a mold 1, because the mold 1 is cooled while the vacuum forming is under way, the fine uneven embossed shape 10 of the thermoplastic resin sheet 12, which has been transferred in correspondence to the cavity surface 3 of the mold 1 at the initial time of the vacuum forming, can be stabilized as it is. Accordingly, it is possible to transfer the fine uneven embossed shape 10 even with vacuum forming not requiring large-scale equipment. It is preferable that the heating temperature of the mold 1 is 100-140°C and the cooling temperature is 60-80°C. Upon conducting the vacuum forming of the thermoplastic sheet 12 with the mold 1, if compressed air of 0.05-0.5 MPa is applied from a plug assist 2, the transfer is improved. COPYRIGHT: (C)2007,JPO&INPIT
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