Optimization of the activation of adhesive agents by laser radiation

Abstract

The present invention relates to devices with which, for example, narrow surfaces of preferably plate-like workpieces can be provided with a coating material. The device includes a laser for outputting a lease beam to a lase bean emitter, wherein the laser beam is directed onto the coating material or onto the workpiece in such a manner that the laser beam forms a plane of reference with solder on the surface of the coating material or the workpiece.

1 . A device for activating an adhesive agent provided on a coating material, in particular on an edge band or a workpiece, comprising
 a laser outputting a laser beam to a laser beam emitter, wherein the laser beam is directed to the coating material or the workpiece in such a manner that the laser beam forms a plane of reference perpendicular to a surface of the coating material or the workpiece; and   a movement device for moving the coating material or workpiece;   characterized in that   the laser beam has more p-polarized light than s-polarized light in the plane of reference.   
     
     
         2 . The device according to  claim 1 , characterized in that more than 75% of p-polarized light is present in the plane of reference. 
     
     
         3 . The device according to  claim 1 , characterized in that almost exclusively p-polarized light is present in the plane of reference. 
     
     
         4 . The device according to  claim 1 , further comprising a deflection mirror or prism for deflecting the laser beam. 
     
     
         5 . The device according to  claim 1 , characterized in that the light of the laser beam comprises direct radiation. 
     
     
         6 . The device according to  claim 1 , wherein the laser beam is directed to the coating material or the workpiece such that the laser beam forms an angle of 15-35°, with a plane of the coating material or a plane of the workpiece. 
     
     
         7 . The device according to  claim 1 , characterized in that the laser is a emits a laser beam with only a particular polarization and wherein the laser is selected from the group consisting of a diode laser, a fiber laser, a CO 2  laser and a solid state laser. 
     
     
         8 . The device according to  claim 1 , further comprising a pressure roller, which presses the coating material onto the workpiece after activation of the adhesive agent. 
     
     
         9 . The device according to  claim 8 , further comprising a movement device for the workpiece. 
     
     
         10 . The device according to  claim 1 , wherein the laser beam forms an angle from 20-30°. 
     
     
         11 . The device according to  claim 1 , wherein the laser beam forms an angle from 20-27°.