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:
Jun. 19, 2001
Filed:
Nov. 25, 1996
Patrick N. Kocher, Greenville, SC (US);
H. Walker Stockley, Spartanburg, SC (US);
Cryovac, Inc., Duncan, SC (US);
Abstract
A dual-film package and method for making such package is disclosed which combines the manufacturing simplicity of a package having a single, peelable lid with the consistent peelability of a package having separate permeable and impermeable lids. This is accomplished by providing a support member and a lid having a gas-permeable film and a substantially gas-impermeable film. A first heat-weld bonds the gas-permeable film to the support member and a second heat-weld bonds the gas-impermeable film to the gas-permeable film. The first and second heat-welds each have a bond-strength which is greater than the intra-film cohesive strength of the gas-permeable film so that the lid preferentially delaminates within the gas-permeable film upon peeling, thereby leaving a portion of the gas-permeable film lidded to the support member.