in an apparatus for laminating sheets of paper , card or board with plastic film which , for example , is clear and transparent , an intermittently running sheet feeder is disposed upstream of a continuously running laminating device and an intermittently running cross cutter is disposed downstream of the laminating device . the sheet feeder and cross cutter have conveying drives , which can be switched on and off , and photoelectric barriers which traverse the conveying track and , via timing elements and control devices , control the conveying drives in the sheet feeder and in the cross cutter in accordance with the mode of operation of the laminating device .