Method for the production of a thermoplastic plate comprising at least one smooth edge, device therefore, and edge machining system

摘要

A thermoplastic board ( 20 ) comprising at least one smooth side edge ( 21 ) is produced by means of extrusion. The side edge of a synthetic web is heated at least to its melting temperature following calibration while the peripheral surface zones are kept at a temperature below the softening temperature by cooling. A smoothing device ( 10' ) for a side edge of the thermoplastic board encompasses a guiding groove ( 14' ) that is provided with at least one heating means ( 15' ), located within the face ( 11' ), and at least one respective cooling means ( 16', 17' ) located within the side surfaces ( 12', 13' ) that face each other. A cutting edge ( 21, 24 ) of a synthetic board ( 20 ) that can be guided inside the guiding groove ( 14' ) rests against the face ( 11' ) while the peripheral surface zones ( 22, 23 ) thereof lean against the side surfaces ( 12', 13' ).