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. 25, 1990
Filed:
Jul. 06, 1988
Yun C Sun, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
An article for the storage of food products, the body of the article comprising multilayers of different thermoplastic resins which together provide excellent water vapor and gas barrier properties to preserve the food product while in its packaged state. The article contains at least one skin layer, one barrier layer, and a tie layer interposed between each skin layer and the barrier layer. The tie layer contains a graft copolymer formed from a polymerizable mixture comprising a monomer mixture and a preformed polymer which is capable of imbibing the monomer mixture. The preformed polymer is allowed to contact the monomer mixture for a length of time and at a temperature such that enough of the monomer mixture is imbibed therein, and then the polymerizable mixture is polymerized.