Perforator blade for paper products and products made therefrom

B - Operations – Transporting – 26 – D

Patent

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Details

B26D 5/00 (2006.01) B26D 7/00 (2006.01)

Patent

CA 2145625

Disclosed is a perforator blade for core wound paper products, such as toilet tissue and paper towels. The perforator blade has a relatively narrow notch width and a relatively narrow tooth width. As the notch width and tooth width of the perforator blade are decreased, the total notch width, which is the aggregate of the width of each notch across the total width of the perforator blade, is similarly decreased. A perforator blade according to the present invention provides very high perforation bond strengths, joining superimposed plies in face-to-face relation, without unduly increasing the tensile strength of the lands bridging adjacent sheets of the core wound paper product. Also, individual tooth flexibility is increased according to the present invention resulting in enhanced perforator blade life and perforation bond quality. Perforated paper products according to the present invention also exhibit less lint, reducing hygiene problems, reduced occurrences of sheet tearing during dispensing, and provide a smoother, better finished appearance during dispensing.

Lame de perforateur pour produits en papier sur rouleaux, comme le papier hygiénique et le papier essuie-tout. Cette lame de perforateur est munie d'échancrures et de dents assez étroites. Lorsqu'on diminue la largeur des échancrures et celle des dents de cette lame de perforateur, la largeur totale des crans d'arrêt, qui représente la somme de la largeur de chaque échancrure sur toute l'étendue de la largeur de la lame du perforateur, diminue également. Une lame de perforateur de ce type permet d'obtenir une très grande résistance des liaisons à la perforation, en réunissant les plis superposés l'un en face de l'autre sans trop augmenter la résistance à la traction des segments de papier qui établissent un pont entre les feuilles adjacentes du produit en papier sur rouleau. La souplesse de chaque dent est également supérieure avec cette invention, ce qui améliore la durée de vie de la lame du perforateur et la qualité des liaisons lors de la perforation. Les produits en papier perforés grâce à cette invention génèrent également moins de poussière, posent moins de problèmes d'hygiène, moins de problèmes de détachement des feuilles lors de leur distribution et ont une apparence plus douce et mieux finie lors de leur distribution.

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