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:
Apr. 25, 1995
Filed:
Dec. 03, 1993
Yorihisa Hamada, Yokohama, JP;
Yoshitsugu Maruhashi, Yokohama, JP;
Toyo Seikan Kaisha, Ltd., Tokyo, JP;
Abstract
The present invention relates to a stretch molded structure obtained by stretch molding a polyester composition containing a thermoplastic polyester (A) comprising an ethylene terephthalate unit as a main component and a thermoplastic polyester (B) comprising a butylene terephthalate unit as a main component in an A:B weight ratio of from 99.9:0.1 to 91:9. This stretch molded structure has a decreased stress at the time of stretch molding, and excellent shape appearance. At the same time, it has reduced residual stress, and excellent heat resistance. In addition, it has excellent transparency, mechanical strength and dimensional stability. Furthermore, when this stretch molded structure is used in a heat-resistant container in which at least the body portion is heat-set and the mouth portion or the mouth portion and the center of the bottom portion are heat-crystallized, high producibility can be obtained and the heat-resistance can be markedly increased.