PVC windowsill board production line PVC windowsill board production line, production process: mixing - Twin Screw Extruder - mold - vacuum forming - cooling - correction - Traction - cut - discharge - film. This production line stability, high output, long life, the main electrical parts are imported parts, equipment, products manufactured in the width :500-1000mm, thickness :20-40mm, smooth surface film after the nice, is a the ideal decoration material.