Introduction to PVC Plastic Processing Basics

Chemical name: PVC English name: Poly (Vinyl Chloride)

Specific gravity: 1.38 g/cm3 Molding shrinkage: 0.6-1.5% Molding temperature: 160-190°C

Features: Mechanical properties, excellent electrical properties, strong acid and alkali resistance, good chemical stability, but low softening point. Suitable for the production of thin plates, wire and cable insulation, seals and so on.

Molding characteristics:

1, amorphous material, moisture absorption, poor fluidity. In order to improve the fluidity and prevent the occurrence of air bubbles, the plastic can be dried in advance. The mold casting system should be thick and short, the gate section should be large, and there should be no dead ends. The mold must be cooled and the surface chrome plated.

2, due to its corrosive and fluid characteristics, it is best to use special equipment and molds. All products must be added with different types and quantities of additives as required.

3, easily decomposed, with steel at 200 degrees. The copper contact is more easily decomposed and erodes when decomposed. Irritating gas. Molding temperature range is small.

4. When using a screw-type injection nozzle, the aperture should be large to prevent dead material. With no inserts, inserts should be warmed up.