PROCESS FOR MANUFACTURING SHEET BLANKS FOR COLLAPSIBLE FOLDING BOXES WITH ANGLE WINDOWS OR SUCH FOLDING BOXES AND APPROPRIATE EQUIPMENT

摘要

-19-ABSTRACTAn apparatus and associated method forembossing at least one fold line in a substantiallyrigid plastic material for use in a collapsible foldingbox with angle windows is disclosed, and the apparatushas a roll of plastic material, a heating zone forheating a length of the roll fed plastic material, anembossing zone located downstream of the heating zonefor forming at least one fold line in the heatedplastic material, a punching zone for intermittentlyforming cutout portions in the plastic material, atakeup device for creating a variable length slack inthe plastic material for providing the continuousmovement of the plastic material through the heatingzone and the embossing zone and the intermittentmovement of the plastic material through the punchingzone, a cross-cutter to cut the plastic material at thepunched holes, a suction roll to convey the cut plasticmaterial for connection to a glue-coated cardboard boxblank.