Sealed Air Corporation (us)

Sealed Air Corporation

Michael Metta

Robert J O'Dowd

Charles P Kannankeril

Christof Hammerschmidt

Timothy Theodore Oberle

Eva Chu

Edward Ackershoek

Chitai Carey Yang

Stephan Roesel

Ian M Donegan

Devin Ridgeway

The cellular cushioning article comprises a thermoformed film bonded to a second film, with the thermoformed film having thermoformed regions separated by a land area. The thermoformed film has a combination of (i) a layer containing a high melt point polymer and (ii) thermoformed regions exhibit a high average maximum birefringence. The high birefringence corresponds with high stress on the polymer chains. The combination results in cells of substantially increased burst strength. The cellular cushioning article can provide higher burst strength per mil of film thickness, or can be produced using less plastic than prior art cellular cushioning articles, while maintaining the same or comparable burst strength. Also disclosed is a process for making the cellular cushioning article.

Air cellular cushioning article of enhanced strength per unit weight of film, and process for making same

An inflatable cushioning article is made from a multilayer film having a seal layer, a gas barrier layer, and a tie layer adhering the seal layer to the gas barrier layer. The cushioning article has a plurality of inflatable chambers, with each of the chambers having a plurality of cells connected in series to one another via inflation channels. Although the inflatable article can be made from relatively thin films, the article exhibits a relatively high burst pressure and can be inflated to, for example 3 psi, and withstand conditions such as 140&#xb0; F. and high altitude, without film delamination, seal failure, or film rupture. Preferably, the tie layer comprises an anhydride modified polyolefin having an anhydride content of at least 150 ppm.

High strength high gas barrier cellular cushioning product

Growing community of inventors

Wayne, NJ, United States of America

Michael Metta