| 摘要 |
PURPOSE:To produce the title foam exhibiting an excellent dimensional stability and a low migration of additives to a packaged good by introducing a specific compd. into an extruder in a process wherein a foam is produced by extruding into a low-pressure zone a molten gel obtd. by heating, melting, and mixing a polyolefin resin, a blowing agent, a nucleating agent, etc., on the extruder. CONSTITUTION:A process for producing a foam by extruding into a low-pressure zone a molten gel obtd. by heating, melting, and mixing a polyolefin resin (e.g. a low-density polyethylene resin), a blowing agent (e.g. butane), a nucleating agent (e.g. talc), etc., on an extruder, wherein a half ester of a 21C or higher fatty acid with a polyhydric alcohol having 3-7 hydroxyl groups (e.g. glycerol monobehenate) is introduced into the extruder. |
