Common causes and solutions in the production of pvc garden hose

PVC garden hose is a daily necessities for everyone. As a professional PVC hose manufacturer, we will share the common problems and solutions in the production process of pvc hose.

First, the surface is dull

Possible causes: 1 die temperature is too low ‚ 2 die inner wall is not dry 3 compressed air supply is insufficient or leaking

Solution: 1 Increase the temperature properly ‚ 2 Clean the die ƒ 3 Increase the air supply or check the air leak and repair

Second, the wall thickness is uneven

Possible reasons: 1 The core mold and the die are not positioned correctly. 2 Plasticized unevenness. 牵引 3 traction is not normal. 4 Compressed air is unstable. 5 Head temperature is unstable.

Solution: 1 should adjust the center position of the mandrel and the die ‚ 2 check the traction device ƒ 3 should be the gas supply system stable 4 strengthen the plasticification system control 5 check the head heating device is intact, and the temperature around the head is stable

Third, the surface of black lines

Possible reasons: 1 Uneven distribution of raw material additives 2. Poor flow of raw materials 3 ƒ Head and filter temperature is too high 4 Head filter and shunt plate are not well cleaned 5 Filter is not cleaned

Solution: 1 Improve mixing, strengthen mixing to improve dispersion performance 2 Improve raw material formulation ƒ 3 Reduce temperature appropriately 4 Check filter and split version 5 Clean filter

Fourth, surface wrinkles and ripples

Possible reasons: 1 The temperature of the die is too high or the heating is not uniform. 2 The water supply of the cooling setting device is insufficient, the water temperature is high, the traction speed is too slow, and the discharge of the die is uneven.

Solution: 1 Check if the heating device is damaged, lower the temperature ‚ Properly increase the water supply volume 3 ƒ Speed ​​up the traction speed 4 Adjust the die gap

Five, the inner wall crack

Possible causes: 1 Raw material mixed with impurities 2 ‚ core mold temperature is low ƒ 3 barrel temperature is low 4 Traction speed is too fast 5 too much lubricant

Solution: 1 Pre-treatment of raw materials ‚ 2 Increase the temperature of the core mold ƒ 3 Increase the temperature of the cylinder 4 Reduce the traction speed 5 Adjust the formula