PPH and other plastic pipes sometimes have poor plasticization and scorch in the production process. Scorching phenomenon: the temperature is too high, or the temperature control instrument fails, causing the plastic to be scorched due to high temperature; the glue outlet of the machine head has a large smoke, a strong irritating smell, and a crackling sound; the surface of the PPH plastic Granular scorch appears; there are continuous pores at the glue joints. Causes of scorch: plastic scorch caused by high temperature control; long-term use of the screw without cleaning, scorch accumulation and extrusion with the plastic; too long heating time, long-term heating of the plastic accumulation, which will cause the plastic to age and deteriorate. Scorch; too long parking time, no cleaning of the machine head and screw, resulting in plastic decomposition and scorch; repeated mold or color changes, resulting in plastic decomposition and scorch; the machine head gland is not pressed tightly, and the plastic is aging and decomposed inside; control The temperature meter fails, causing scorch after ultra-high temperature.
