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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 4859514 B1

PDFFull Text
Date of Patent:
Aug. 22, 1989

Filed:

Jun. 12, 1987

Laminate for an easily opened package

Applicant:
Inventors:

Steven G Friedrich, Greer, SC (US);

Kent A Davis, Travelers Rest, SC (US);

Assignee:

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

Attorneys:

Toney; John J.

Lee, Jr.; William D.

Quatt; Mark B.

Primary Examiner:

Edith Buffalow

Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428 366 ; 428 367 ; 428349 ; 428516 ; 428 348 ;
Abstract

A first web having an ionomer, or ionomer/ethylene vinyl acetate copolymer (EVA) sealant layer, heat sealed to a second web having an EVA/ethylene butene copolymer (EBC)/polypropylene (PP) sealant layer, forms an easily opened package. A layer adjacent the sealant layer of the second web optionally includes PP or ethylene propylene copolymer. With this optional layer, the sealant layer of the first web may comprise a polymeric material which forms strong interweb adhesion upon heat sealing.

Find Patent Forward Citations

Friedrich, Steven. (1989). Laminate for an easily opened package (U.S. Patent No. 4859514). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4859514

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

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