Packaging machine, etc. has molds moving through station(s) for thermoforming bases and station(s) for welding covers to base

摘要

A machine has station(s) with tools for thermoforming a blank into a shaped base and station(s) for supporting the shaped base while welding a cover sheet to the periphery of the base. The machine has the thermoforming molds conveyed between the stations so the same mold will be used when forming a base and welding the cover to it. A machine has station(s) with tools for thermoforming a blank into a shaped base and station(s) for supporting the shaped base while welding a cover sheet to the periphery of the base. The machine has the thermoforming molds conveyed between the stations so the same mold will be used when forming a base and welding the cover to it. Each mold may have an inflation port. The tools include a thermoforming plate coupled to a heated plate. Both plates can be moved to and from the mold. The welding station has a metallic welding plate coupled to a heated plate. Both plates can be moved to and from the welding position. The welding plate has truncated rectangular pyramidal lands 0.2 - 3 mm high with 0.5 - 3 mm spacing between them and the sides of the lands angled at 30 - 120 deg .