Continuous method for the production of light guide plates

A method for producing a light guide plate having light-influencing structures, the method comprising:

• producing a plastic web by extrusion, in the presence of a device for smoothing the surface of a plastic plate web;
• continuously passing the plastic web below and/or above at least one laser engraving device;
• laser engraving light-influencing structures into at least one surface of the plastic web and/or in the interior of the plastic web with a laser engraving device, to obtain a structured plastic web;
• and
• producing individual light guide plates from the structured plastic web,
• wherein the laser engraving device is arranged into a continuous extrusion apparatus downstream of an extrusion polishing stack such that the laser engraving occurs at a temperature of the surface of the plastic web, facing the laser engraving device, of 40 to 120° C.