PVC is specially used for pipe fitting molding, for PVC molding it is not as common plastic molding, like PP, PE, ABS, molding. For PVC, as it has some corrosion and very sensitive to temperature, so for PVC molding has special demands on injection molding machine.
PVC molding cannot with hot runner, for injection molding machine, it is designed special for PVC, such as its screw and barrel, and they are all stainless and anti-corrosion. For PVC molding, there are fans on machine to keep the temperature. On the other hand, for machine size, as the mould always with hydraulic cylinder,PVC molding machine always have big size door.
As PVC only can molded with cold runner, so the waste of the tail cannot avoid, and most of them will mold of edge gate, it will need labor to cut the tail, of course, there is a solution to save the labor for cut the tail, that is to make the mould with submarine gate, but not all of the mould can do like this, it depends on product.
If you have any questions about PVC molding, feel free to discuss with me.
Posted by Diana
E-mail: dkm@dakumar.com

Tag:  PVC injectionPVC injection moldingPVC molding trouble shootingPVC molding solutionPVC molding problem