The strip production line has the advantages of low cost, simple operation and convenient cleaning. This has advantages for color mixing, as two batches of different colors must be replaced by a thorough cleaning of the equipment. However, the drawback of the strip making method is that the cooling section takes up space, the length of which is determined by the temperature requirements of the polymer.
Most polymers must be blended and then granulated to become marketable materials before they can be made into a final product. The power required by the granulator is directly proportional to the extrusion volume and exponentially related to the size of the filter screen. There are many different granulator designs, but all granulators can be divided into two broad categories: cold granulator systems and die surface hot-granulator systems. The main difference between the two is the arrangement of granulation time. Cold granulation system, at the end of the processing process from the solidified polymer granulation; In the die surface pelletizing system, the molten polymer is pelletized as soon as it emerges from the die surface, and the pellet is cooled downstream. The two granulation systems have their own advantages and disadvantages.
