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:
Jul. 05, 1977
Filed:
Jan. 14, 1974
Applicant:
Inventors:
Claude J Stiles, Tuscola, IL (US);
Daniel Tomo, Arthur, IL (US);
Assignee:
National Distillers and Chemical Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29D / ; B65D / ;
U.S. Cl.
CPC ...
264 459 ; 215 / ; 264 54 ; 264173 ; 264230 ; 264321 ; 264D / ; 264D / ; 428 35 ; 428315 ; 428910 ; 428913 ;
Abstract
A method of producing a lightweight, strong, uniform, foamed layer containing tubular film with good opacity which can be heat-shrunk onto an annular substrate such as a glass bottle rapidly and uniformly is accomplished by co-extruding a low density polyethylene and a mixture of an ethylene polymer and a blowing agent under particular conditions and causing the blowing agent to decompose thereby foaming the ethylene polymer.