PVC Products

PVC pipe manufacturers made some analysis and solutions:.

Butterfly spot: caused by too fast injection speed.

Solution: PVC pipe manufacturers

(1) Eliminate by reducing the injection speed, in general, reduce the pressure and flow of the secondary injection can get a certain appropriate value, but not too small, in order to prevent the injection of full cavity.

(2) check the mold, check the mold core, cavity waterway is smooth, whether the temperature is too high, the above conditions will appear white, collectively known as: scalding.

(3) The plasticization of raw materials is not enough, if the nozzle temperature is too low and the pressure is small, it is easy to hit the cold material to the PVC pipe products.