PROCESS OF MOLDING THERMOPLASTIC SHEET

摘要

This process of molding a thermoplastic sheet can be used for blister packaging. The process particularly includes the premolding step of bringing the sheet into close contact with the outer cylindrical surface of a molding drum, preheating the sheet and concurrently vacuum sucking the sheet into a cavity defined on the outer cylindrical surface of the drum; and the full-molding step of vacuum sucking the sheet and concurrently inserting the sheet into the cavity by means of a plug. The process can well mold a thermoplastic sheet including a layer of polypropylene.