EXTRUDER TO PROCESS THERMOELASTIC POLYMER MATERIALS (VERSIONS) Russian patent published in 2015 - IPC B29C47/76 B29C47/70 

FIELD: machine building.

SUBSTANCE: extruder to process thermoplastic polymer materials contains casing made in form of a hollow cylinder with internal surface limiting channel N, in which screw conveyer is installed with possibility of rotation and movement of the processed material, degassing zone Z, lock device closing channel N of the casing along the flow L direction of the processed material. The extruder is equipped with a bypass device to move the processed material bypassing the lock device, going beyond the channel N of the casing and equipped with output draw die. The draw die is located beyond the casing against the casing inlet hole, via which the processed material is returned to section of channel N downstream the lock device along the flow L direction of the processed material. Besides the degassing zone Z can be made in the channel N of the casing between the lock device and draw die or perforated section of the casing located in section of the channel N downstream the lock device along flow L of the processed material.

EFFECT: increased reliability of the extruder ensuring intensity of the processed material degassing.

15 cl, 5 dwg