| 摘要 |
A foam body being characterized as having a density of between about 0.9 to about 3.5 pounds per cubic foot, and a process for preparing the foam body, is described. The process comprises the steps of (A) heat plastifying a mixture of a thermoplastic resin and at least one halocarbon polymer; (B) adding at least one blowing agent to the plastified resin; (C) forming a blowable resin mixture by uniformly mixing the blowing agent and the halocarbon powder in the resin under a pressure sufficient to prevent blowing of the resin; (D) extruding the mixture into a region wherein the blowable resin mixture expands into a foam body; and (E) cooling the foam body. ( |
