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:
Nov. 03, 1998
Filed:
Jul. 12, 1996
Rexam Medical Packaging, Inc., Vernon Hills, IL (US);
Abstract
A peel-open package includes a polymeric film, a lid adhered to the polymeric film along a continuous portion thereof and a product encapsulated between the polymeric film and lid material. The polymeric film is typically a coextruded multiple layer film having a sealable layer and at least one base layer. The sealable layer comprises an ethylene copolymer derived from at least one monomer selected from the group consisting of vinyl acetate and alkylacrylates, a talc additive, and an additive which provides peelability to the heat seal layer. The lid material is preferably a microporous layer to allow sterilization and prevent subsequent contamination by bacteria and other microbial organisms. The peel-open package provides a good seal range for uncoated Tyvek.RTM., evidence of seal integrity, reduced Tinting, and a seal strength which is sufficiently low to prevent the delaminating or branching of the lid material when it is removed. The present invention also includes methods of making peel-open packages.