METHOD AND DEVICE FOR INJECTION MOULDING OF POLYMERS Russian patent published in 2012 - IPC B29B13/10 

FIELD: process engineering.

SUBSTANCE: invention relates to injection moulding of plastics. Initial polymer material is, first, subjected to heating and softening at permanent mixing and mincing, if required, in one continuous-operation cutter-compactor 1 at temperature below polymer fusion point and above vitrification point. Polymer mixing and heating is executed by, at least, one mixer and one mincer 12 with working edges acting on polymer material. Then, polymer is fed directly, with no intermediate step, into screw extruder 10 directly coupled with said cutter-compactor 1. Extruder screw 16 softens said polymer to make the melt to be injected into shaped part. Mixer and, if required, mincer 12 forces polymer into screw extruder loading zone 10.

EFFECT: higher efficiency and quality.

14 cl, 2 dwg