Appartus for granulating plastic material, particularly linear polyesters and polyamides

摘要

The apparatus for granulating plastic material, particularly for linear polyesters and polyamides, comprises a first hollow horizontal cylindrical body (1) inside which a tubular core (3) is axially accommodated; an annular chamber (11) is defined between the body and the core, is connected to a channel (2) for feeding plastic material and is closed frontally by an extrusion plate (12) having a series of extrusion holes (14) connected to said annular chamber; the core is crossed by a driven shaft (15) which has, on its front end, a blade-supporting head (20) which cooperates with the extrusion plate; the annular chamber is externally delimited by a hollow cylindrical body (7) in which at least one chamber (36,37;49) is defined; the chamber is coaxial to the shaft and is connected to a supply of a diathermic liquid whose temperature is correlated to the required granulation temperature.