| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for obtaining a blow-molded container that is a solely made of blow grade HDPE resin, that is conventionally used, and has excellent surface brightness and high rigidity.SOLUTION: A method of molding a blow mold container made of HDPE resin uses a mold in which a cavity surface is mirror-finished. A mold temperature Tmold is within a range between a crystallization starting temperature Tci and a crystallization ending temperature Tce of the HDPE resin to use shown as in formula (1): Tce≤Tmold≤Tci. In the formula (1), Tci is a temperature found from a rising point of a heat generation curve accompanying crystallization of a temperature-falling crystallization measurement of 10°C/min by differential scanning colorimetry, and Tce is a temperature found from a convergent point. |
