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:
Aug. 10, 1993
Filed:
Feb. 15, 1991
Sekisui Kaseihin Kogyo Kabushiki Kaisha, Nara, JP;
Abstract
A process of producing a thermoplastic polyester series resin foamed material is disclosed, which comprises heating and further foaming a thermoplastic polyester resin foamed material having a crystallinity of not higher than 30% by bringing it into contact with water or steam of at least 60.degree. C. and then heating the foamed material by bringing it into contact with a heating medium other than water of at least 100.degree. C. to further foam the foamed material. A process of producing a thermoplastic polyester series resin foamed material is also disclosed, which comprises heating and further foaming a thermoplastic polyester series resin foamed material having a crystallinity of not higher than 30% by bringing it into contact with water or steam of at least 60.degree. C., heating and further foaming the foamed material by bringing it into contact with a heating medium other than water of at least 100.degree. C., and molding the foamed material by a mold.