Process for the production of polyolefin foams

Details Process for the production of polyolefin foams Process for the production of polyolefin foams

1984-03-14

1986-03-25

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 26, 264 54, 264DIG18, 521128, 521134, 521138, 521915, B29C 6722, B29C 4788, C08J 324

Patent

active

045782318

ABSTRACT:
An improved process for the production of cross-linked polyolefin foams by mixing polyolefins with conventional foaming agents and cross-linking agents known for polyolefin foam production, shaping the mixture into a plate or into a continuous sheet, substantially without cross-linking and foaming, the improvement comprises mixing said mixture with up to 50% by weight of an .alpha.,.beta.-unsaturated polyester, heating the plate or sheet optionally by IR radiation, and cross-linking the foaming by dielectric heating at a temperature above the decomposition temperature of the cross-linking and foaming agents.

REFERENCES:
patent: 3390105 (1968-06-01), Verdol
patent: 3413244 (1968-11-01), Landler et al.
patent: 4163085 (1979-07-01), Kuhnel et al.
patent: 4239714 (1980-12-01), Sparks et al.
patent: 4454256 (1984-06-01), Pellicelli

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