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US 2012/0231192 A1Published application
Compression molded polymeric foam articles and methods
AssigneeMuCell Extrusion, LLC
InventorsMark E. Lindenfelzer, Jere R. Anderson, Samuel E. Dix
Life of this patent
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Abstract
Compression molded polymeric foam articles and methods are described herein. Equipment design and processing techniques may be controlled to form compression molded articles having desired characteristics.
Claims20
A method of forming a compression molded foam article comprising:
- conveying a stream of polymeric material and blowing agent in an extruder;
- introducing a portion of the stream into a mold cavity formed between mold portions to form a pellet, wherein the pellet has an average cell size of less than 150 microns;
- and
- compressing the mold portions to form a compression molded foam article having an average cell size of less than 150 microns.
1 more element
A foam article comprising a polyolefin material, wherein the article has a density between 0.5 g/cm3 and 0.9 g/cm3, and an average cell size of less than 150 micron, wherein the article is compression molded.
Dependencies are inferred from the claim text.