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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.:

US 4963427 B1

PDFFull Text
Date of Patent:
Oct. 16, 1990

Filed:

Jul. 07, 1989

Multilayer packaging film

Applicant:
Inventors:

Paolo Botto, Milan, IT;

Claudio Freschi, Milan, IT;

Assignee:

W. R. Grace & Co.-Conn., Duncan, SC (US);

Attorneys:

Toney; John J.

Lee, Jr.; William D.

Quatt; Mark B.

Primary Examiner:

P C Sluby

Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; B65D / ;
U.S. Cl.
CPC ...
428215 ; 428516 ; 428520 ; 428910 ; 428349 ; 2641761 ; 426127 ;
Abstract

This invention relates to a co-extruded multilayer film and particularly for vacuum packaging food products. The film comprises at least one layer formed by ethylene-vinyl acetate-copolymer with a vinyl acetate content preferably comprised between 9% and 26% range by weight. The film is preferably radiated at a lower level than 20 MRad. The film is adaped to resist high stretch ratios during the packaging process, so that packaging of bodies with projecting portions or cavities is possible, without breaking the film.

Find Patent Forward Citations

Botto, Paolo. (1990). Multilayer packaging film (U.S. Patent No. 4963427). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4963427

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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