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:
Jan. 31, 1984
Filed:
Sep. 29, 1981
Applicant:
Inventor:
Stanley B Levy, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29D / ;
U.S. Cl.
CPC ...
425446 ; 2642101 ; 264216 ; 264280 ; 264345 ; 264348 ; 264556 ; 425 66 ; 425224 ; 425404 ; 425445 ;
Abstract
Sheets of organic thermoplastic polymeric film are contacted with processing rolls having a microgrooved surface to reduce the air layer therebetween, thereby aiding heat transfer between film and roll and consequently increasing processing speed.