... surface and better hardness PVC Skinning/Semi-Skinning Foaming Board Extrusion Line. Compared with PVC free foaming board, PVC skining ... techniques. This machine has the fatures of high output, stable extrusion, high foaming, smooth and wearable surface. By equipping with the ... has a very wide application range. PVC skining foaming board extrusion line is composed of twin-screw extruder, die, vacuum ...