Rigid PVC is one of the most widely used plastic materials. Pvc Enamel is an amorphous material. PVC materials often contain stabilizers, lubricants, auxiliary processing agents, colorants, impact agents, and other additives in practical use.
PVC materials have non flammability, high strength, resistance to weather changes, and excellent geometric stability.
PVC has strong resistance to oxidants, reducing agents, and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid, and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
The melting temperature of Pvc Cartoon Pendant during processing is a very important process parameter, and improper use of this parameter can lead to material decomposition issues. The flow characteristics of Pvc Cartoon Ornaments are quite poor, and its process range is very narrow. Especially high molecular weight PVC materials are more difficult to process (these materials usually require the addition of lubricants to improve flow characteristics), so small molecular weight PVC materials are usually used. The shrinkage rate of PVC is quite low, generally ranging from 0.2 to 0.6%.
Process conditions for injection molding
Drying treatment: Drying treatment is usually not required.
Melting temperature: 185~205C
Mold temperature: 20~50C
Injection pressure: can be as high as 1500bar
Maintaining pressure: can reach up to 1000bar
Injection speed: To avoid material degradation, a considerable injection speed is generally required.
Runner and Gate: All conventional gates can be used. If processing smaller components, it is best to use needle shaped or submerged gates; For thicker components, it is best to use fan-shaped gates. The minimum diameter of needle shaped or submerged gates should be 1mm; The thickness of the fan-shaped gate cannot be less than 1mm.
Typical use
Water supply pipelines, household pipelines, house wall panels, commercial machine casings, electronic product packaging, medical equipment, food packaging, etc.
