Werkzeug zum Tiefziehen und Siegeln offener Kunststoffschalen

摘要

A mould for thermoforming and sealing open trays (3, 3') of plastic has tray-shaped metal elements (2, 2'), which a level rim (11, 11') borders on the open side. In order that the outer seam of a first plastic tray can be joined by sealing to the outer seam of a second plastic tray, placed invertedly against it, by one and the same mould without the additional supply of heat, it is provided according to the invention that the rim (11, 11') has a heat-insulating top (18), separate from the cooled metal element (2, 2') and fastened on the latter.