B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/672
B29C 67/20 (2006.01) B29C 44/08 (2006.01)
Patent
CA 1247817
-16- Abstract Closed cell foamed shaped bodies are produced from cross-linked polyolefin by a process that encompasses the steps of filling a closed mould with a foamable and cross-linkable polyolefin composition containing a blowing agent and a cross-linking agent, and the forming of a correspondingly shaped foamable product under pressure, with the cross-linking reaction proceeding without the blowing agent being decomposed, then warming of the foamable cross-linked product which exists to a foaming temperature between a pair of metal plates, with the product being able to expand biaxially within the region left between the metal plates and subsequent warming of the intermediate product thus obtained under atmospheric pressure in order to be able to expand the intermediate product in all directions to the completely foamed shaped body, while complete decomposition of the remaining blowing agent takes place.
488706
Dynamit Nobel Aktiengesellschaft
Robic Robic & Associes/associates
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