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:
Oct. 05, 1993
Filed:
Jun. 22, 1990
Applicant:
Inventors:
Yoshitsugu Maruhashi, Yokohama, JP;
Setsuko Iida, Yokohama, JP;
Assignee:
Toyo Seikan Kaisha, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ; B29C / ;
U.S. Cl.
CPC ...
428 3692 ; 215 / ; 428910 ;
Abstract
In preparing a draw-blow-formed polyester vessel, the inner surface and outer surface temperatures of a starting preform are adjusted at specific levels at the preliminary heating step, and the drawing speed in the circumferential direction is adjusted at a level of at least 350%/sec and a specific relation is established between the area draw ratios on the inner and outer surface sides at the draw-blowing step. A polyester vessel having a reduced shrinkage with time and a high pressure-resistant strength is obtained according to this process.