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:
Mar. 09, 1982
Filed:
Sep. 15, 1980
Applicant:
Inventors:
Anne C Bieler, Mauldin, SC (US);
Milton A Howe, Jr, Spartanburg, SC (US);
Assignee:
W. R. Grace & Co., Duncan, SC (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
156198 ; 156272 ; 1563084 ; 156229 ; 428 36 ; 428518 ; 20415914 ; 264 22 ;
Abstract
A method of improving the high temperature strength of a heat seal which bonds cross-linkable thermoplastic material together by first forming the heat seal and then irradiating the seal area with ionizing radiation to increase the cross-linking in the material of the seal area by at least 2 MR.