| 摘要 |
The invention relates to a method of shaping hollow boards ( 11 ) that consist of a thermoplastic material and that have at least one cavity ( 17 ) in the interior of the board that is open towards the board edge ( 18 ). According to the inventive method, said cavity ( 17 ) is sealed at the board edge ( 1 ), thereby closing the cavity towards the exterior in a substantially gas-tight manner. Once the cavity ( 17 ) is closed in this manner, the hollow board ( 11 ) that has been softened by heating is shaped by a shaping pressure to which it is subjected from the exterior. The invention also relates to a device for carrying out the inventive method. The invention provides a method and a device which prevents the interior structure of the hollow board being deformed in an undesirable manner during the shaping process.
|
