Common Film Blowing Machine Fault Solution Summary!

Abnormal phenomenon

Cause

Solution

一

The bubble tube is skewed

1,fuselage,mouth film temperature is too high

2,The temperature of the side connect or is too high

3,the film thickness is not uniform

1,reduce the body temperature,mouth film temperature

2,Properly reduce the temperature of the side adapter

3,adjust the film thickness

二

Somewhat white or colloidal

1,there are impurities in the raw materials

2,The filter is broken

3,Uneven particle mixing

1. Sifting of raw materials

2. Replace the filter

3. Strictly control kneading and making process

三

Film surface flower

1,fuselage or mouth film temperature is too low

2, screw speed is too fast

3,the screw temperature is too high or too low

4,polyethylene formula is unreasonable (too much lead salt stabilizer or too much cold plastic agent)

1.Properly increase the temperature of fuselage and mouth film

2,appropriate to reduce the speed

3,adjust the screw cooling medium flow

4. Improve the formula

四

The film thickness is not uniform

1,the head design is unreasonable

2, the core rod deflection deformation

3, the temperature around the head is not uniform

4, blowing ratio is too large

5. Uneven cooling

6. Compressed air is unstable

1. Modify and improve the process parameters of the head

2. Replace the mandrel

3. Check the head heater

4. Reduce the blowing ratio

5, adjust the cooling medium flow

6. Repair the compression pump

五

Buckling

1, the machine head installation uneven

2, the film thickness is not uniform

3, cooling is not enough or uneven

4. The splint or traction roll is not aligned with the center of the head

5, the Angle of the splint is too large

6. The tightness of the traction roller is inconsistent

7, the winding tension is not constant

1. Correct the levelness of the head

2, adjust the film thickness

3, adjust the cooling device or reduce the line speed

4. Align the center line

5, reduce the Angle of the splint

6, adjust the traction roller

7. Adjust the friction force

六

Can't get traction

1,the head temperature is too high or too low

2,unilateral thickness differen is too large

1,adjust the machine temperature

2,adjust the unilateral thickness