... process. II. Vacuum Forming Machined process (Vacuum forming plastic packaging):1. Extruding plastic sheet:ABS, HIPS, PP, PE, PC ... Cleaning and PackagingAll vacuum forming plastic products are cleaned before packaging. Products are wrapped with plastic film to prevent scratches ... and metal industries. IV. Why US (Vacuum forming plastic packaging)?1. Uses imported high quality acrylic sheet, ABS, PC, ...