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PVC Processing Aid: Improve Melt Strength, Surface Gloss, and Processing Stability for PVC Products
May 22, 2026

In the extrusion or calendering production of PVC products (such as pipes, profiles, sheets, and foam boards), common quality issues include insufficient melt strength, rough surfaces, and poor fusion. Extensive practice shows that adding a suitable PVC processing aid (such as ACR) can fundamentally solve these problems. A high‑quality PVC Processing Aid, through optimized molecular structure and rheological properties, helps manufacturers improve efficiency, reduce scrap rates, and significantly enhance product appearance.


Common problems: Why is the surface of your PVC product not ideal?

There are usually three reasons:low melt strength、poor fusion or weak mechanical properties.

To solve the above problems, the following measures can be taken:

1:Choose the right type of processing aid.

2:Control the dosage.

3:Optimize processing temperature.

4:Coordinate with other additives.


Product advantages: Core value of high‑quality PVC Processing Aid

1:Fast fusion, shorter processing time

   PVC processing aid significantly accelerates the fusion of PVC particles, allowing the melt to reach a uniform plastication state earlier. This means higher extrusion speed, lower energy consumption, and increased output per unit time.

2:Significantly improved melt strength, stable forming

   For large profiles, pipes, or foamed products, sufficient melt strength is key to dimensional stability. ACR processing aid effectively prevents parison sagging, edge collapse, and cell coalescence, reducing scrap rates.

3:Eliminates surface defects, gives high gloss

   Fully fused and uniform PVC melt naturally produces smooth surfaces without flow marks or sharkskin. For transparent sheets, a good processing aid does not harm transparency; on the contrary, it improves clarity and surface flatness.

4:Enhances mechanical properties

   PVC processing aid improves the entanglement of PVC molecular chains, increasing tensile strength and elongation at break. It also works synergistically with impact modifiers (such as CPE, MBS) to further improve toughness.


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