Abstract: The present invention provides a vacuum thermoforming process-combined one-step molding method for expandable polypropylene, comprising the steps of silk screen printing on a plastic sheet, subjecting the plastic sheet to vacuum thermoforming to provide a vacuum thermoforming part, and foaming an expandable polypropylene and integratedly molding the expandable polypropylene with the vacuum thermoforming part. The expandable polypropylene vacuum thermoforming product produced by the method according to the present invention exhibits an improved impact resistance, and the production process is more superior.

Abstract: The present invention provides a vacuum thermoforming process-combined secondary molding method for expandable polypropylene, the method comprises the steps of silk screen printing on a blister sheet, vacuum thermoforming of the blister sheet to provide a thermoforming part, foam molding of expandable polypropylene to provide a EPP foam part, spray coating the surface of the EPP foam part with ink, and integrate molding of the EPP foam part and the thermoforming part. The expandable polypropylene blister product produced by this method exhibits good impact resistance and possesses good appearance.