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:
Sep. 17, 2002
Filed:
Aug. 31, 2000
Rahim Armat, Mendenhall, PA (US);
Prasad S. Potnis, Duluth, GA (US);
Richard D. Pastor, Cincinnati, OH (US);
Keith S. Shih, Loveland, OH (US);
Leo Stoeberl, Greenwood Lake, NY (US);
Victor P. Holbert, Loveland, OH (US);
International Paper Company, Tuxedo, NY (US);
Abstract
The invention addresses the use of a composite carbon dioxide scavenging filler which has been dispersed uniformly into a polymeric matrix. The resultant layer can then be coated or laminated onto a paper, paperboard, foil, or other substrates. It can also be made into a cast or blown film. The carbon dioxide scavenging structure thus created desirably contains a polymeric matrix binder as the filler dispersion medium, one or more particular carbon dioxide scavenging fillers, one or more moisture producing/retaining agents or moisture retaining agents, and, optionally, one or more polymeric or surfactant dispersion/wetting agents aiding the wetting and the uniform dispersion of the fillers in the matrix. This allows products contained in a package, such as roasted coffee, or produce, to maintain freshness and counteract pressure buildup in a package which results in bulging, rupture, loss of freshness, poor shelf appearance, and increased anaerobic bacterial activity.