Today Qingdao Sainuo pe wax manufacturers continues to take you to understand the last

part process of PVC pipe abnormal phenomenon causes and solutions.

7. PVC pipe brittle

Cause of occurrence:

(1)Not Enough degree of plasticization;

(2)The screw speed of PVC pipe extruder is too fast;

(3)PVC pipe extruder head temperature is too low;

(4)High viscosity of resin.

The Solution:

(1)Adjust the temperature of main engine to ensure plasticizing;

(2)Slow down the screw speed;

(3)Adjust the head heating ring to increase the temperature;

(4)Choose low viscosity resin or add a small amount of low viscosity resin.

8.  The tube snapped

Cause of occurrence:

(1)PVC pipe extruder traction speed is too fast;

(2)There are impurities in the raw material;

(3)The mixture is not up to standard.

The Solution:

(1)Slow down the traction;

(2)Replacement of non-impurity materials;

(3)Check that the mixing process is correct and that the operation or formulation is

reasonable.

9. The two ends of the finished product are not of uniform thickness

Cause of occurrence:

(1)The water temperature of the sizing sleeve is too high;

(2)The Compressed air pressure is high;

(3)Cutting speed too slow;

(4)Traction speed is erratic, sometimes fast, sometimes slow.

The Solution:

(1)Increase the cooling water quantity of the outer wall of the sizing sleeve to improve the

cooling effect;

(2)Lower the pressure;

(3)Adjust the cutting speed;

(4)Check the traction machine equipment and correct the traction speed.

Qingdao Sainuo Chemical Co.,Ltd. We are manufacturer for PE wax, PP wax, OPE wax,

EVA wax, PEMA, EBS,Zinc/Calcium Stearate…. Our products have passed the REACH,

ROHS, PAHS, FDA testing.

Sainuo rest assured wax, welcome your inquiry!

Website：https://www.sanowax.com

E-mail：sales@qdsainuo.com

               sales1@qdsainuo.com

Adress：Room 2702,Block B, Suning Building, Jingkou Road, Licang District,

Qingdao,China.