DEVICE FOR INTRODUCTION OF LIQUID OR VISCOUS COMPONENTS INTO EXTRUDER Russian patent published in 2008 - IPC B29C47/10 B29C31/10 

FIELD: technological processes.

SUBSTANCE: device consists of bushing that freely rotates in bearing with internal cone-shaped channel and screw spirals, cone-shaped feeder, supplying pipeline. Screw spirals are arranged on the surface of cone-shaped feeder. Annular bore is provided in the basis of cone-shaped feeder with provision of tailpiece. Bearing, the external ring of which is pressed in sleeve, is installed on tailpiece. Bottom part of sleeve enters dead annular channel, which is provided in the base of extruder shell. Spring is installed under sleeve.

EFFECT: higher quality of finished product and operational reliability.

3 dwg