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:
Oct. 23, 2001
Filed:
Apr. 22, 1998
Duane H. Buelow, Neenah, WI (US);
Abstract
Multilayer films and packaging structures having a delamination seal and an oxygen barrier layer are disclosed. The delamination structure adjacent to the EVOH oxygen barrier layer binds well to the EVOH layer and also retains its ability to delaminate. The multilayer films, and packages in which they are utilized, have several layers including a first, external layer; a second, tie layer comprising a mixture of polybutylene and an anhydride modified polyethylene such that a peelable bond is formed between said first, external layer and said second, tie layer; a third, core layer comprising ethylene vinyl alcohol which functions as an oxygen barrier layer; a fourth, tie layer comprising an anhydride modified polyethylene and a fifth, external layer.