PVC Processing Aid is an additive used to improve the processing performance of polyvinyl chloride (PVC). Its main function is to promote PVC melting, increase melt strength, improve surface quality, and reduce processing defects. Due to poor thermal stability and high melt viscosity, PVC is prone to problems such as melt fracture and surface roughness during processing. The addition of processing aids can significantly optimize its processing performance.
PVC processing aid can promote melting, increase friction between PVC particles, accelerate melting speed, and make plasticization more uniform; Improve melt strength, prevent melt fracture, reduce extrusion swelling, and enhance processing stability; Improve surface smoothness, reduce surface defects such as flow marks and shark skin, and enhance the appearance quality of products; Enhance thermal stability, some processing aids can assist with thermal stabilizers to reduce PVC degradation; Optimize the processing window to maintain good processability of PVC over a wider temperature range.
PVC processing aid is mainly divided into acrylic processing aid and San processing aid. Acrylic processing aid, such as polymethyl methacrylate (PMMA) based processing aids, have high melt strength, good surface finish, and are suitable for both hard and soft PVC. Mainly used in profiles, pipes, sheets, and transparent products. SAN processing aid, with lower cost but slightly inferior performance to ACR, is mainly suitable for general PVC products such as cables and films.
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Features |
ACRYLIC processing aid |
SAN processing aid |
|
Main components |
Acrylic ester copolymer |
Styrene Acrylonitrile copolymer |
|
Melting promotion effect |
(Extremely strong) |
(Medium |
|
Melt strength |
High (suitable for complex extrusion) |
Low (suitable for simple molding) |
|
Transparency |
Excellent (can be used for transparent products) |
Fair (may slightly yellow) |
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Cost |
High |
Low |
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Typical applications |
profiles, transparent sheets, medical pipes |
sheets, cable sheaths, flooring |
The product is mainly used in industries such as PVC pipes, PVC profiles (doors and windows), PVC films, PVC transparent sheets, wires and cables.
PVC processing aids are crucial in PVC processing, especially for hard PVC products such as pipes and profiles. ACR processing aid has become the mainstream choice due to its excellent melt strength and surface finish, while SAN processing aid is suitable for cost sensitive applications. In the future, with the advancement of PVC processing technology, high performance, environmentally friendly, and multifunctional processing aids will become a development trend.


Price:
Price 2200.0 USD ($) / Kilograms
Minimum Order Quantity : 1 Kilograms
Storage : Room Temperature
Shape : other
Properties : Foam regulator is a key functional additive in the production of PVC foam products (such as foam boards, foam profiles, decorative boards, etc.), mostly high molecular weight acrylic ester (ACR) modified products. Its core function is to enhance the strength and viscosity of PVC melt, stabilize the cell structure during foaming, avoid bubble rupture, merging, collapse or perforation, and thus form a fine and uniform closed cell structure in the product. The use of appropriate foaming modifiers can significantly improve the surface smoothness of PVC foam products, reduce product density, and reduce weight, while enhancing dimensional stability and mechanical properties. It effectively solves common production problems such as surface roughness, collapse, uneven density, and coarse foam pores, and is one of the core additives to ensure the quality and production yield of PVC foam products.
Shelf Life : 2 Years
Price 2200.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Storage : Room Temperature
Shape : other
Properties : Oxidized wax is a modified product of polyethylene wax oxidation, with polar functional groups on its molecules. It has excellent compatibility with PVC and fillers, and has both internal and external lubrication, dispersion, and demolding effects. Strong thermal stability, can refine pores, reduce and collapse bubbles, and enhance surface gloss. Widely used in PVC foam board, it can be adapted to extrusion and hot pressing processes, and is the core additive for ACR foam regulator.
Shelf Life : 2 Years
Price 2300.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Storage : Room Temperature
Shape : other
Properties : The product boasts excellent thermal stability and resistance to migration, making it perfectly suited for hightemperature, highpressure WPC molding conditions. During continuous, longterm production, it resists volatilization, migration, and powdering, avoiding common issues like mold carbon buildup, surface contamination, and postproduction whitening or powder exudation. It significantly improves the surface smoothness and gloss of WPC products while extending equipment cleaning intervals and reducing maintenance downtime, ensuring continuous and stable production line operation.
Shelf Life : 2 Years
Price 1820.0 USD ($) / Ton
Minimum Order Quantity : 1 Ton
Storage : Room Temperature
Shape : other
Properties : SAN processing aid is a styreneacrylonitrile copolymer based additive specially used for rigid PVC processing. It appears as white flowing powder and features good compatibility with PVC resin. This kind of processing aid can effectively promote plasticization of PVC melt, reduce melt viscosity and improve fluidity during extrusion and injection molding, while enhancing melt strength and drawing resistance to avoid melt fracture and sagging problems in production. It also improves the surface smoothness and gloss of finished products, reduces flow marks and shrinkage marks, and endows products with better rigidity and dimensional stability. With moderate cost and excellent comprehensive performance, SAN processing aid can partially replace ACR processing aids; it is widely applied in PVC pipes, profiles, plates, WPC woodplastic materials and highfilled PVC formulations, with a usual addition dosage of 1.0 3.0 phr in standard PVC formulas.
Shelf Life : 2 Years