JINHU PVC free foamed sheet production line is capable of continuously producing PVC free foamed sheet with thickness in the range of 1mm – 15mm and width of 1200mm – 2400mm as well as improved surface density. PVC free foam board is usually produced by adding a chemical blowing agent to a PVC formulation. During processing of PVC free foam board, the blowing agent produce gases by thermal decomposition. On exiting the die, molten material is allowed to expand freely. Growing of bubbles is continuous process until equilibrium between surface tension on cell walls and gas pressure is reached. After that, the extrudate is also cooled on its external surfaces.