B - Operations – Transporting – 29 – B
Patent
B - Operations, Transporting
29
B
B29B 7/38 (2006.01) B29B 7/88 (2006.01) B29C 47/00 (2006.01) C08J 3/22 (2006.01)
Patent
CA 2079686
2079686 9115347 PCTABS00007 A method is disclosed for the production of extruded plastic products by using an extruder (1) which has an extruder hopper (2) which is supplied with a hot mixture obtained by discontinuous mixing of PVC powder and additives in a hot mixing zone, with the supply of frictional heat, wherein a first amount of PVC powder is mixed with an excess of additives with the supply of frictional heat, after which the mixture thus obtained is homogenised in the same mixing zone with a supplementary amount of PVC powder, in such a way that the final mixture has the desired concentration of additives, after which the hot mixture obtained after homogenisation is fed directly to the extruder hopper (2). An installation for the production of plastic products by extrusion, comprising a discontinously operating hot mixer is also disclosed, as well as said hot mixer (3).
Gowling Lafleur Henderson Llp
Wavin B.v.
LandOfFree
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