International Paper Company

Victor P Holbert

Sandeep D Kulkarni

Richard C Williams

Richard D Faber

Rick C Williams

Yuan Ling

David Verd Reed

Prasad Shrikrishna Potnis

Keith S Shih

David Reed

Richard D Pastor

Rahim Armat

Leo Stoeberl

A method for increasing the long term storageability of a cellulosic paper or paperboard product. The method includes providing a paper or paperboard product made from cellulosic fibers having a basis weight ranging from about 80 to about 300 pounds per 3000 square feet. A holdout material is applied to at least one surface of the paper or paperboard product. The web is then coated with an ink receptive material selected from the group consisting of an aqueous acrylic polymer coating material, an aqueous biocidal agent and a combination of aqueous acrylic polymer coating material and aqueous biocidal agent and dried to provide a paper or paperboard product having enhanced long term storageability. Webs made according to the invention are suitable for making file folders which exhibit improve long term storageability by resisting damage from moisture and/or biological activity.

Paper articles exhibiting long term storageability and method for making same

A packaging laminate comprising a paperboard substrate for providing a base layer, a tear-resistant polymer layer applied to said substrate, and a heat seal polymer layer applied to said tear-resistant polymer. This laminate structure is particularly useful for blister pack packaging.

Paperboard substrate for blister packaging

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.

Controlled atmosphere packaging

Growing community of inventors

Loveland, OH, United States of America

Victor P Holbert