DEVICE FOR FILLING EXTRUDER WITH PRE-TREATED THERMOPLASTIC POLYMER RAW MATERIAL Russian patent published in 2009 - IPC B29C47/10 B29B17/00 

FIELD: instrument making.

SUBSTANCE: invention relates to the device designed to fill the extruder with pre-treated thermoplastic polymer raw material. The device contains one rarified tank furnished with rotary members intended for preliminary processing of the material. Preliminary processing includes drying and crystallisation of raw material. Each tank has an outlet for partially crystallised starting material. The tank continuously communicates with the extruder inlet. There is a transfer line with tanks containing prepared loose starting material and continuously communicating with tank outlets and tightly jointed to the inlet hole. The transfer line outlet features a coupling directly and tightly connected to the extruder loading hole. The transfer line incorporates a metering device to fill the extruder and filling level metre. The volume of starting material fed by aforesaid metering device is controlled by the filling level control device.

EFFECT: ease of control and lower production and operating costs.