Compacted olefin fibers

Details Compacted olefin fibers Compacted olefin fibers

B - Operations, Transporting

29

C

B29C 43/00 (2006.01)

Patent

CA 2267417

A polyolefin plaque is made by hot compaction of an assembly of fibres of the oriented polymer. It has been found to be beneficial to subject the fibres to a prior cross-linking process. Hot compaction is then less temperature-sensitive and produces plaques with excellent hot strength properties. Preferably the fibres have been subjected to prior stages of irradiation and annealing, both in a non-oxidising environment, for example acetylene.

On produit une plaque de polyoléfines par compression à chaud d'un ensemble de fibres du polymère orienté. On a remarqué qu'il est intéressant de soumettre les fibres à un prétraitement de réticulation. La compression à chaud est ensuite moins sensible à la température et produit des plaques dotées d'excellentes propriétés de résistance aux fortes températures. Les fibres ont de préférence été soumises à des phases précédentes d'irradiation et de recuisson dans un milieu non oxydant tel que de l'acétylène.

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