MICROCELLULAR THERMOPLASTIC ELASTOMERIC STRUCTURES

摘要

Microcellular thermoplastic elastomeric polymeric structures are provided. T he articles have an average cell size of less than 100 .mu.m and a compression set ranging from less than about 30 % to less than about 5 %, and a rebound value of at least 50 %. The articles may be formed from a thermoplastic elastomeric olefin, preferably metallocene-catalyzed polyethylene. The densi ty of the articles ranges from less than 0.5 gm/cm3 to less than 0.3 gm/cm3.