FIELD: polymers reprocessing.
SUBSTANCE: the invention presents a method of polymers reprocessing and manufacture of shaped articles of by extrusion. The method provides, that first an extrusion material is produced from polymers melt by extrusion. Then it is fed into a calibrating device and sized for shaping of the given geometrical sizes of the article with following crystallization of the polymer. At that they use the calibrating device, the housing of which has the upper and lower cooling plates, the sealing slats and cooling grooves. The forming surfaces of the calibrating device are placed on the molding inserts. The upper and lower cooling plates and the forming inserts are out of aluminum or its alloys. Ridges of the cooling grooves are previously rounded off. The width of the cooling grooves is chosen proceeding from the visco-elastic features of the polymers. The invention allows to receive necessary rate of crystallization of polymers at a smaller difference of temperatures of a melt and the used refrigerant, to expand a range of refrigerants used at calibration and to increase efficiency of the process.
EFFECT: the invention allows to get the necessary rate of crystallization of polymers, to expand a range of refrigerants used at calibration, to increase efficiency of the process.
11 cl, 4 dwg
