AN IMPREGNATED AND SERRATED CUTTING STRIP FOR A CARTON

摘要

PCT No. PCT/GB96/01095 Sec. 371 Date Mar. 18, 1997 Sec. 102(e) Date Mar. 18, 1997 PCT Filed May 8, 1996 PCT Pub. No. WO96/35574 PCT Pub. Date Nov. 14, 1996A serrated cutting strip (26) for a carton comprises paper or board impregnated with a mix of acrylic resin and urea formaldehyde. The strip is 0.2 to 0.5 mm in thickness and can bend without cracking over a bar of 20 mm diameter. The strip has adhesive on one side and a release sheet (28) on the adhesive. The strip is applied to a carton by apparatus (10) which comprises rollers (44,45) for advancing a substrate sheet (24), a cutter (12) and means (44,45) for drawing a release sheet (28) away from the edge (46).