Method for forming sandpaper disks

Abstract

A method and apparatus for forming sandpaper discs on a mass production basis. A roll of sandpaper and a roll of a velour fabric are mounted in a frame structure and are moved along separate feed paths to a pair of drive rollers where the webs are juxtaposed for subsequent movement through the apparatus as a laminated web. As the sandpaper web emerges from the sandpaper roll, it passes first beneath a heater where the upper face of the sandpaper is heated and thereafter beneath a spray assembly where adhesive is sprayed onto the heated upper face of the sandpaper with the heat energy in the sandpaper serving to evaporate the water soluble materials in the adhesive so that the sandpaper thereafter moving to the drive rollers is essentially dry so that the laminated web formed by the juxtaposition of the velour fabric and sandpaper at the drive rollers may thereafter be moved through the apparatus to a printing cylinder where grit indicia is applied to the exposed face of the velour fabric and thereafter to a die cutting station where a plurality of sandpaper webs are periodically stamped out of the laminated web. A spring biased take up roller and a slip clutch in the drive to the final drive rollers allows the web to pause momentarily and periodically as the sandpaper discs are cut from the web without interfering with the smooth continuous movement of the webs in the remainder of the apparatus.

Dependencies are inferred from the claim text.