The process of blow molding machine is using preforms to make plastic bottles. The preforms are produced with the necks of the bottles, including threads on one end. The preforms are heated typically by infrared heater, then blown using high-pressure air
Corrugated board production line 3 layered corrugated cardboard production line Corrugated cardboard production line Corrugated bpard production line for 3 layer cardboard 3 layer corrugated paper board production line Way of heating: by steam Machine des