PROFILING UNIT FOR CONNECTION OF EXTRUDER TO GRANULATION PLANT AND METHOD OF ITS START-UP Russian patent published in 2009 - IPC B29B9/06 

FIELD: engines and pumps.

SUBSTANCE: unit comprises several supplying channels that are hydraulically communicated to extruder outlet opening. Supplying channels are communicated to gear pumps, when possible, with constant capacity, which are used to block supply of melt flow to channels in the time of start-up. There is single channel arranged from every gear pump to extrusion nozzle. Extrusion nozzles may be formed by openings in perforated plate connected to its head part. Several gear pumps are actuated by common shaft. Method for start-up of granulation plant equipped with such profiling unit is realised so that at first extruder is actuated, until sufficient pressure is built up at the inlet of every gear pump. When such pressure is achieved, every gear pump is actuated. If underwater granulation plant is used, granulation knives are set in circular motion not later than this moment occurs.

EFFECT: improvement of granulation plant design and provision of same material flow through all nozzles.

8 cl, 5 dwg