In the PVC foam board, the purpose of adding ultra-high molecular weight polymer is: one is to promote the plasticization of PVC; the other is to improve the melt strength of the PVC foam material, prevent the merger of bubbles, and obtain a uniformly foamed product ; The third is to ensure that the melt has good fluidity to obtain products with good appearance. Due to the different products of different foaming product manufacturers, the equipment, processes, raw materials and lubrication systems used are different, we have developed foaming regulators with different properties to meet the different needs of users.
1. Definition of foaming material:
Foamed plastic is also called foamed plastic, which is a composite material filled with gas, which is based on plastic and contains a lot of bubbles.