2. Calcium powder fineness: because adding ratio, directly affect the cost of formulation, processing performance and the wear and tear of the screw cylinder and the product performance, so can't choose too coarse calcium powder, calcium powder fineness in 400-800 mesh.
4. ACR: a high content of calcium powder SPC on the floor, plasticizing demand is high, in addition to the screw type and processing technology on the control, the need to help by adding auxiliary plasticizing, and ensure that the melt has certain strength, and has certain ductility in the rolling process.
6. Dispersants: due to the large number of components and the large proportion of calcium carbonate added, the infiltration and dispersion treatment of calcium carbonate and the dispersion of each component are very important. The dispersion can not only improve the processing performance, but also improve the product performance, improve the die removal cycle, reduce and delay the wear of the screw barrel.
Environmental protection plasticizer: can have certain dispersion effect, and help the plasticizing, but the amount is too big, can affect shrinkage rate, products vicat temperature drop, with the use of time, will become fragile.
7. Recharging: use the company's production and reprocessing materials as much as possible.