Process for the cutting of thermoplastic polymers downstream...

Details Process for the cutting of thermoplastic polymers downstream... Process for the cutting of thermoplastic polymers downstream...

B - Operations, Transporting

29

B

B29B 9/06 (2006.01)

Patent

CA 2626954

Process for the production of substantially cylindrical pellets of vinyl - aromatic (co) polymers, leaving a water- ring extrusion die, wherein the extrusion is effected so that the length/diameter ratio of the pellet ranges from 1.3 to 2 and the diameter of the (base) ranges from 2 to 3.2 mm, with a flow-rate of the polymer, per hole of the die, ranging from 4 to 20 kg/h.

L~invention concerne un procédé de fabrication de pastilles sensiblement cylindriques de (co)polymères vinyles aromatiques à la sortie d~une filière d~extrusion à anneau d~eau, l~extrusion étant réalisée de manière à ce que le rapport longueur/diamètre des pastilles soit compris entre 1,3 et 2 et à ce que le diamètre de la (base) soit compris entre 2 et 3,2 mm, le débit du polymère étant compris entre 4 et 20 kg/h par orifice de la filière.

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