PURPOSE: To form a thermoplastic synthetic resin sheet and to make the register in printing easy in a method wherein the thermoplastic synthetic resin sheet is heated and thereafter it is formed, by carrying out uneven heating in such a way that the part where forming is to be done is heated at a temperature higher than the peripheral part thereof.
CONSTITUTION: A masking device is mounted on part of a radiation heating type heating apparatus other than the part where forming is to be done. By this heating apparatus, a sheet comprising a foamed polystyrene sheet and a high- impact polystyrene sheet joined on the foamed polystyrene sheet is heated. A pitch pattern has been printed on the high-impact such a way that it is intended that a prescribed pattern would appear in position after forming is carried out. After such uneven heating is carried out, a bowllike container is formed using a mold in the shape of a bowl.
ABE KEIJI
YAMAGUCHI KATSUHIRO
KUROSAWA EIJI
WATANABE YOSHIROU
SATOU KENJI
TADA NOBUO
TAKEUCHI ATSUSHI
FURUSAWA YUKIO
MIURA KATSUHIKO
HASEGAWA TAKESHI
NOGUCHI TOSHIAKI
TAKAGI HIDEYASU
HIROZAWA KUNINORI
AKIYAMA HIROYUKI
OGURA CHIYUUKIYUU
JAPAN STYRENE PAPER CORP
| JP58060414B | ||||
| JPS5639258A | 1981-04-14 | |||
| JPS4722465A | ||||
| JPS5595519A | 1980-07-19 |
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