Nondistorted polyethylene foam structures and process for making

Details Nondistorted polyethylene foam structures and process for making Nondistorted polyethylene foam structures and process for making

1992-06-01

1993-04-27

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

264 461, 4283148, 4283166, 428398, 521 79, B32B 326, B32B 700

Patent

active

052060829

ABSTRACT:
Disclosed is a closed-cell, non-crosslinked foam structure of a ratio of minor dimension to major dimension of about 1/8 or less comprising a plurality of coalesced extruded strands or profiles of a foamed polyolefin composition having an average cell size of from 0.02 to 0.5 millimeters. The cross-sectional geometry of the foam structure substantially corresponds to the overall arrangement of the orifices of the die from which the foamed polyolefin composition was extruded. Further disclosed is a process for making the above foam structure comprising extruding a foamable polyolefin composition through the multiorifice die to form the structure.

REFERENCES:
patent: 4801484 (1989-01-01), Yao et al.
patent: 4894395 (1990-01-01), Park

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