PVC Foamed Skinning Board Production Line
After vast experience in producing PVC free foamed board production lines and PVC skinned foamed board production lines, JINHU Group offers a new type of foamed board production line, i.e. PVC semi-skinned foamed board production line. JINHU PVC semi-skinned foamed sheet co-extrusion production line is capable of continuously producing PVC semi-skinned foamed sheet with thickness in the range of 3mm – 18mm and width of 1220mm.
PVC foam board comprised the chemical composition, poly vinyl chloride, which is widely used in furniture, building and advertising industries. Characteristics of PVC skin foam board includes very smooth surface, high surface hardness, low density, not easy to scratch, often used for making cabinets, furniture, etc.
Rigid PVC foam board is usually produced by adding a chemical blowing agent to a PVC formulation. During processing, the blowing agent produce gases by thermal decomposition. On exiting the die, the supersaturated gas-resin mixture expands, with the pressure drop to produce foam as continuous PVC foam sheet. 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, at this point, bubble growth process is terminated to produce solid, high-density skin layers and low-density cellular core.