1. the phenomenon of poor plasticization.
(1) the surface of plastic layer is covered with toad skin.
(2) the temperature control is low, the instrument pointer reflects the temperature is low, the actual measurement temperature is also low.
(3) the plastic surface is black and has tiny cracks or no plasticized fine particles.
(4) there is a distinct mark in the plastic sewn suture of plastics.
2. Causes of poor plasticization
(1) temperature control is too low or unsuitable for control.
(2) plasticized resin particles in plastics.
(3) improper operation, screw and traction speed too fast, plastic has not been completely plasticized.
(4) when the granulation is uneven, the quality of the plastic itself is also uneven.
