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Injection Molding Process Conditions For PVC Packaging Film
May 28, 2018

PVC packaging film is a non-crystalline material to a certain extent. In the actual use process, stabilizers, auxiliary processing agents, lubricants, colorants, impact agents, and other additives are often added. The PVC packaging film is in progress. It has high strength, weather resistance, non-flammability, and excellent geometric stability.


The PVC packaging film has strong resistance to oxidants, reducing agents and strong acids during operation, and can effectively be eroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid during the operation and is also not applicable to aromatic hydrocarbons. Chlorinated hydrocarbons in contact with the occasion. The melting temperature of PVC during processing is a very important process parameter.


PVC packaging film injection molding process conditions

1. Drying: Normally no drying is required.

2. Melting temperature: 185 ~ 205C mold temperature: 20 ~ 50C

3. Injection pressure: can be as large as 1500bar. Pressure maintenance: can be as large as 1000 bar. Injection speed: In order to avoid material degradation, injection speed is generally used.

4. Runners and Gates: All regular gates can be used. It is best to use tip-type gates or submerged gates for smaller parts, and fan gates for thicker parts. The minimum diameter of the pinpoint gate or submerged gate should be 1mm; the thickness of the fan gate should not be less than 1mm.