PVC processing aid is widely used in the processing of PVC products, such as extrusion, injection molding, blow molding,blistering and calendering .It adheres to the PVC resin particles through a long molecular chain, transmits the external heat and shear force to the resin, promotes its melting and plasticization, reduces the temperature of the processing process, improves the melt strength, improves the appearance quality of the products, and doesn’t reduce the rigidity of rigid PVC.

Acrylic Processing Aid or called ACR ,it is a thermoplastic graft polymer obtained from emulsion polymerization of methyl methacrylate and butyl acrylate, which belongs to core-shell structure. The molecular weight is generally about 1-8 million (weight average molecular weight), and its density is 1.05-1.20 g/cm3.It is used in pvc products to promote faster fusion, increases melt strength, enhances extensibility and improves melt homogeneity.Increases the surface quality of PVC products,offering excellent wall-thickness control and good thermoforming capabilities .Accelerate fusion rate, increase productivity and decrease processing temperature.Excellent clarity and surface quality for end-use products, superior fusion promotion for rigid and soft PVC. Increased output rates and improved production efficiency.

SAN Processing Aid is a super high molecular weight processing aid ,it is a kind of super high molecular weight polymer which is copolymerized by styrene and acrylonitrile. It can promote PVC plasticization, obviously improve the thermal deformation temperature and surface smoothness of PVC products, and at the same time give PVC products higher surface hardness and rigidity.The processing performance is good, plasticizing quickly.It endow PVC products good surface finish. Compared with other ordinary processing aids, it has higher molecular weight which is above 5 million, the product has a good cost performance.