Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1985-10-21
1987-07-28
Foelak, Morton
Gas separation
Means within gas stream for conducting concentrate to collector
55 74, 264 37, 264 53, 264DIG9, 521 56, 521 60, B01D 5314
Patent
active
046829890
ABSTRACT:
The present invention provides a method of recovering volatile foaming agent contained in prefoamed beads of polyolefin resin characterized in that the volatile foaming agent contained in the prefoamed beads is recovered by bringing into contact with heated air prefoamed beads obtained by heating polyolefin resin beads containing the volatile foaming agent. According to the invented method it is possible to avoid not only aggravation of the working environments and atmospheric pollution but also risk of explosion etc. and, furthermore, material cost can be saved through reutilization of the recovered volatile foaming agent.
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Akamatsu Naruhiko
Maeda Hirofumi
Foelak Morton
Kanegafuchi Kagaku Kogyo & Kabushiki Kaisha
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