METHOD AND DEVICE FOR THE PRODUCTION OF A POLYMER MELT CONTAINING ADDITIVES AND BLOWING AGENTS

摘要

In a method and apparatus for preparing an additive/blowing agent containing polymer melt (P AT ), a first polymer melt (P 1 ) and a second polymer melt (P 2 ) are provided. At least one additive (A) and said first polymer melt (P 1 ) are mixed with a screw machine (8) to obtain an additive-containing polymer melt (P A ). In addition, at least one blowing agent (T) and a second polymer melt (P 2 ) are mixed by a mixing device (41) to obtain a blowing agent-containing polymer melt (P T ).A blowing agent-containing polymer melt P T is added to the additive-containing polymer melt P A provided in the screw machine 8. In order to obtain an additive/blowing agent-containing polymer melt (P AT ), the blowing agent-containing polymer melt (P T ) and the additive-containing polymer melt (P A ) are mixed with a screw machine (8).