| 摘要 |
<p>PURPOSE:To heighten the degree of heat resisting temperature by a method in which a preform is blow molded into a primary intermediate molded product, and said primary intermediate product is heat treated, and then this secondary intermediate molded product is blow molded into a bottle. CONSTITUTION:The preform 1 injection molded into a pan like shape is blow molded into a primary intermediate molded product 4, after its mouth part 3 has been blushing treated. This primary intermediate product 4 is heat shrunk by heating, thereby molding a secondary intermediate molded product 5. This secondary intermediae molded product 5 is blow molded into a bottle 6. The bottle 6 is blow molded and is heat set at the temperature higher than that of used atmosphere.</p> |
