An impregnated and serrated cutting strip for a carton

B - Operations – Transporting – 31 – B

Patent

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Details

B31B 1/90 (2006.01) B65D 83/08 (2006.01) B65H 35/00 (2006.01) B65H 37/00 (2006.01)

Patent

CA 2195001

A 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), an edge (46) in front of the cutter (12) and means (44, 45) for drawing a release sheet (28) away from the edge (46).

L'invention concerne une bande dentée coupante (26) pour carton, constituée de papier ou de carton imprégné d'un mélange de résine acrylique et d'urée-formol. La bande présente une épaisseur de 0,2 à 0,5 mm et peut être pliée autour d'une barre de 20 mm de diamètre sans se fissurer. La bande présente un adhésif sur un côté recouvert d'une feuille antiadhésive (28). L'appareil (10) pour appliquer la bande sur un carton comprend des rouleaux (44, 45) pour faire avancer une feuille de substrat (24), un couteau (12), un bord (46) en face du couteau (12) et un moyen (44, 45) pour tirer la feuille antiadhésive (28) et l'éloigner du bord (46).

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