Focus on Blow Molding Machine R & D and manufacture for 30 years
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- Company address：No.30,huihai Road,Bingang Industrial zone, Shamen, Yuhuan, Taizhou, Zhejiang,China
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Cause of occurrence：
①The wall thickness of parison is increases, which leads to the thickening of the wall of the product.
②The shrinkage rate of the product is increased, Resulting in smaller size of the product
③The blowing pressure is small, and the product can not achieve the size of the cavity design.
Solution measures：
①Control the installation by conditioning program to reduce the wall thickness of parison.Control the melt temperature of parison and reduce the shrinkage ratio of parison.
②Change the resin with a small shrinkage rate, the time of blowing should be prolonged and cooling temperature of the mould should be reduced.
③Properly increase the pressure of tightening the air.
Focus on Blow Molding Machine R & D and manufacture for 30 years
Contact us