Abstract: An apparatus for shaping thermoplastic materials or for laminating backing parts includes a turntable driven by a rotary drive and having rests for receiving supporting devices for lower molds or backing parts. The turntable has a plurality of receiving places which can enter alternately into a preliminary blowing box, where a molded part can be shaped in conjunction with an upper mold arranged on an upper table. The preliminary blowing box has a front wall with an opening, facing the rotary drive. The turntable has a separating wall with flanges on both side which engage a wall indentation which surrounds the rotary drive and consequently bounds the preliminary blowing box, in order to seal the opening. A seal which can be shaped by means f a pressure medium and can be pressed against the separating wall is located in the front wall of the preliminary blowing box about the opening.

Abstract: An apparatus for shaping thermoplastic materials or for laminating backing parts has a turntable (3) which can be rotated by means of a rotary drive (2) and comprises rests (26, 27) for receiving supporting devices (28) for molds and or backing parts (15). The turntable has a plurality of receiving places which are able to enter alternately into a preliminary blowing box (9), where the shaping of the moulded part to be produced takes place in conjunction with a mold arranged on an upper table (6). For sealing the opening (11) in the front wall (10), facing the rotary drive (2), of the preliminary blowing box (9), the turntable has a separating wall (12) which grips with flanges (21, 22) on both sides over a wall indentation (20), which surrounds the rotary drive and consequently bounds the preliminary blowing box.