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:
Sep. 05, 1978
Filed:
Sep. 14, 1976
Applicant:
Inventors:
Ernest Jack Buckler, Sarnia, CA;
Michael Hugh Richmond, Sarnia, CA;
Assignee:
Polysar Limited, Sarnia, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B65D / ;
U.S. Cl.
CPC ...
229 / ; 428308 ; 428310 ; 428304 ; 428158 ; 428515 ; 428516 ; 428517 ; 428519 ; 260 4256 ; 260 4257 ; 2608 / ; 521 84 ; 521 91 ; 521146 ; 229 / ;
Abstract
Thermoplastic polymeric laminates are prepared which have one layer of filled styrene polymer composition, and at least one layer of a dissimilar polymer selected from polyolefins such as polyethylene, polypropylene and polybutene, and nitrile group containing barrier polymers. The filled styrene polymer composition contains from 5 to 50 parts by weight filler, and is the product of mixing a styrene polymer masterbatch of impact polystyrene, filler, rubber and oil with polystyrene. The laminates can be used for thermoforming thin walled articles such as cups, plates, trays and containers.