The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 09, 1993
Filed:
Apr. 24, 1992
Applicant:
Inventors:
Isao Ishigaki, Maebashi, JP;
Keizo Makuuchi, Sawa, JP;
Fumio Yoshii, Fujioka, JP;
Hideo Kushida, Yachiyo, JP;
Hiroshi Iida, Kawaguchi, JP;
Toyokazu Owada, Funabashi, JP;
Assignees:
Japan Atomic Energy Research Institute, Tokyo, JP;
Yoshino Kogyosho Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264022 ; 264 25 ; 264 26 ; 264525 ; 264 401 ; 264535 ; 264537 ; 264169 ; 264235 ; 264343 ; 264346 ; 4251744 ;
Abstract
A process for forming a container of acrylonitrile polymers by biaxial-orientation blow-molding a preform. A preform of thermoplastic resin, mainly acrylonitrile polymers, is irradiated with an electron beam or a gamma-ray. Immediately after the irradiation, the preform is heated at 40.degree. C. or higher to reduce residual acrylonitrile monomer in the preform to 0.1 ppm or less. Then, the preform is biaxial-orientation blow molded to form a container.