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:
May. 04, 1998
Filed:
Jul. 16, 1996
Gregory K Jones, Appleton, WI (US);
Mary E Shepard, Oshkosh, WI (US);
Abstract
A heat sealable, co-extruded multi-layer packaging film with a peelable, easy-opening feature, comprising a first layer which comprises a blend of polypropylene and a primary resin. The primary resin may comprise ionomers or other acid copolymers, ethylene vinyl acetate, low density polyethylene, or linear low density polyethylene. The first layer is disposed in contact with a second outer layer, which is a heat sealant layer, comprising polybutylene. The heat sealant layer separates from said first layer when force is applied to the heat seal. The film may be laminated to additional components, and may be heat sealed to itself or to a similar film to form a package.