| 摘要 |
The die has a first section (1) with a plurality of feeding channels (2) for each of a plurality of plastics streams, and a second die section (3) with an annular mouth (4) through which the laminated plastics stream emerges in tubular form, together with a die core (5) and layer-forming device (6). The feeding channels (2) feed directly to the device (6) which opens directly into a single annular transport channel (7), which is free from core supporting studs, and which is thereby adapted as a layer-combining device, the annular mouth (4) being connected to the device (6) by an extension (8) of the channel (7), which is similarly free from core studs. The mouth (4) can be varied by replacement, or adjustment, of one of the parts (10, 11), and the wall of the transport channel is corrugated in the region (12). <IMAGE> |
