By concentrating or focusing the radiant energy along a narrow area transverse to the direction of motion, the build up of heat in the core stock may be controlled satisfactorily to avoid deformation, yet enough energy is transferred to tack or fuse {HEAD ~ the laminate} to {TAIL ~ the core stock surface} at the points of contact 
to
By concentrating or focusing the radiant energy along a narrow area transverse to the direction of motion , the build up of heat in the core stock may be controlled satisfactorily to avoid deformation , yet enough energy is transferred to tack or fuse { HEAD ~ the laminate } to { TAIL ~ the core stock surface } at the points of contact
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