Device and method for moulding semi-finished pieces made from open-cell material

A method for shaping of web-like or sheet-like semifinished products (7, 8) made of plastic using a multipart forming tool (1), whose tool parts (2, 3), which are movable toward and away from one another, define a cavity (4) having at least one mold structure (5, 6), in which several semifinished products (7, 8) are heated simultaneously in the cavity (4) of the forming tool (1) and shaped by inflating a balloon or hose (18) made of elastic material which is assigned to the cavity (4), wherein the semifinished products (7, 8) to be shaped are semifinished products made of open-pored duroplastic which are impregnated with a thermosetting binder, the semifinished products (7, 8) are heated using heating devices (25) integrated into the tool parts (2, 3), and several shaped parts are produced from the open-pored semifinished products (7, 8) during each shaping.

A method for shaping web-like or sheet-like semifinished products (7, 8) made of plastic using a multipart forming tool (1), whose tool parts (2, 3), which are movable toward and away from one another, define a cavity (4) having at least one mold structure (5, 6), in which the semifinished products (7, 8) are heated before being fed into the forming tool (1) and several semifinished products (7, 8) are shaped in the cavity (4) of the forming tool (1) by inflating a balloon or hose (18) made of elastic material which is assigned to the cavity (4), wherein the semifinished products (7, 8) to be shaped are semifinished products made of open-pored thermoplastic, the heating of the semifinished products (7, 8) occurs parallel in time to the shaping of prior semifinished products, and several shaped parts are produced from the open-pored semifinished products (7, 8) during each shaping.