Patent ID: 8101671
Filing Date: 2012-01-24
Classification: C08J,C08L

Abstract:
1. A process for producing a polyolefin resin foam, which comprising the following steps: 1. combining a mixture of (A) a rubber, and (B) (B-1) an α-olefin crystalline thermoplastic resin and/or (B-2) an α-olefin amorphous thermoplastic resin, each having a melt tension of less than 3.0 cN in the presence of (C) a crosslinking agent; 2. dynamically heating the product of step 1; 3. combining the product of step 2 with a second polyolefin resin having a melt tension of 3.0 cN or more at a temperature of 210° C. and at a take-up speed of 2.0 m/min; and a nucleant agent having an average particle diameter of from 0.1 μm to less than 2.0 μm; and 4. foaming the product of step 3 using carbon dioxide in a supercritical state.