Method and container for mfg. of hollow moulded products

Application Number: 00118683
Application Date: 2000.06.14
Publication Number: 1278481
Publication Date: 2001.01.03
Priority Information: 1999/6/16 JP 169136/99
International: B29C49/04
Applicant(s) Name: Mitsui Chemical Co., Ltd.
Inventor(s) Name: Tsuiyo Ichiro;Iwamasa Kenji
Patent Agency Code: 31100
Patent Agent: zhu limeng
Abstract A method for manufacturing a hollow molded article by extruding a parison of an ethylene/alpha-olefin copolymer whose density, melt flow rate, melt tension, decane soluble matter content and melting point are controlled within particular ranges, while controlling the resin pressure in the extruder within a certain range, and then blow-molding such parison. This method makes it possible to improve the drawdown characteristic of the parison and to provide a container showing high mechanical strength and only a small amount of extraction into the contents of the article.