The three-layer co-extrusion film blower checks if the normal voltage and the air pump and valve are normal and effective, and checks if the circuit of each part is correct, checks if the oil level of the three reducers is up to standard, and timely repairs and treatment if there are abnormal conditions. After everything is normal, start heating up, first heat up the head 1.2 moulds 3 and 4, 5, 6 zones, heat up for about two hours, then reheat the temperature of zone 1, 2 and 3.

Follow the production instructions to adjust the plug and the tablet to the standard position, and adjust in time if there is any abnormality after power-on. Observe if the rollers are open (to facilitate the smooth introduction of the film film into the rollers) Check if there is any paste and impurities around the moulds and clean them up. 7. Wait until the temperature reaches the standard before starting up.

Start the main motor, run at low speed, extrude the melted material, and after extruding the material, connect the air pump to inflate, forming a bubble. Then turn on the fan immediately. (Properly adjust the air flow according to the frost line of the film, the air flow is too large and the film cooling is not good). Feed the vesicle tube into the traction roll and follow the guide roll until it is wound up.