Method for preparing beads based on expanded polymer

Details Method for preparing beads based on expanded polymer Method for preparing beads based on expanded polymer

B - Operations, Transporting

29

C

B29C 44/34 (2006.01)

Patent

CA 2531379

The invention relates to a method for preparing beads from expanded polymer, with a continuous kin, comprising the following method steps: extrusion of an expanding composition, comprising a thermoplastic polymer and a blowing agent through a die in the molten state, to give the expansion and cooling and cutting the obtained expanded material at the outlet from the die by means of a knife.

Procédé de préparation d~une perle à base de polymère expansé et à peau continue comprenant les étapes successives suivantes : extruder à travers une filière une composition expansible comprenant un polymère thermoplastique et un agent d~expansion, à l~état fondu, pour réaliser l~expansion et refroidir et couper le matériau expansé obtenu en sortie de filière à l~aide d~un couteau.

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