Six Common Problems and Solutions in the Process of PVC Injection Molding Products Production

1. Common problems in the production of PVC injection molding products: burnting stripes flowing from the gate.

The Solution: reducing injection speed. Enlarge gate or nozzle diameter.Reduce injection pressure. Increase the temperature of the material (that is the temperature of the material, such as the mixture of resin powder, calcium carbonate, PVC composite stabilizer) to reduce viscosity.

2. The common problems in the production of PVC injection molding products: the center of the main road has burnt stripes.

The Solution: reducing screw speed or back pressure. Reduce the temperature of the barrel head. Polish the inner surface of screw head or barrel head. Use eccentric screw head.

3. The common problems of in the production of PVC injection molding products : a point in the mold or some where in the seam line discoloration or burning.

The Solution: reducing the PVC injection molding speed. Improve die exhaust. Polished or rounded runner and gate sharp Angle.

4. The common problems in the production of PVC injection molding products: there are scattered black particles on the products.

The Solution: cleaning up the screw and barrel. Slow down the injection rate.

5. The common problems in the production of PVC injection molding products: material discoloration or part of the charred.

The Solution: checking whether the temperature controller is qualified.Clean the barrel until the color is normal. If it is still abnormal, clean the screw and barrel.Reduce screw speed or back pressure. Reduce the heating ring temperature. Check the clearance between screw and barrel.

6. The Common problems in the production of PVC injection molding products: erythema around the gate.

The Solution: increasing the size of the main gate and nozzle. Reduce nozzle temperature.Reduce injection speed polishing runner and gate to improve mold temperature. Change gate position or increase gate number.