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:
Aug. 22, 2000
Filed:
Jun. 04, 1998
Brenda C Searle, Vancouver, WA (US);
Leonard C Jannusch, White Bear Lake, MN (US);
Thomas E Rolando, Maple Grove, MN (US);
Peter A Voss, St. Paul, MN (US);
Craig P Copping, Markham, CA;
H. B. Fuller Licesing & Financing Inc., St. Paul, MN (US);
Abstract
The present invention relates to oxygen barrier film structures and a method of using thereof. More particularly, the invention relates to oxygen barrier film structures comprising at least one substrate, a primer layer on at least one surface of the substrate, said primer comprising a mixture of at least one aqueous dispersion of polyurethane (A) and at least one water dispersible crosslinking agent (B); an oxygen and moisture resistant barrier coating onto said primer treated surface of the polymeric substrate; said coating comprising a mixture of at least one aqueous polyvinyl alcohol or its copolymers (C) and at least one crosslinking agent (D). Improved adhesion properties of the barrier coating on substrates such as polyolefin, polyester and polyamide are obtained.