Method and device for shaping thermoplastic hollow boards

Details Method and device for shaping thermoplastic hollow boards Method and device for shaping thermoplastic hollow boards

2005-08-02

2005-08-02

Fiorilla, Chris (Department: 1734)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

C264S513000, C264S572000, C264S257000, C264S570000, C428S188000

Reexamination Certificate

active

06923928

ABSTRACT:
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.

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