Multi-page signatures made using laser perforated bond papers

Details Multi-page signatures made using laser perforated bond papers Multi-page signatures made using laser perforated bond papers

B - Operations, Transporting

42

C

B42C 3/00 (2006.01) B65H 45/30 (2006.01)

Patent

CA 2160903

Brochures, pamphlets, books, and the like containing a plurality of laser-perforated paper which has been folded and bound (in either order) on the lines of perforation have, among other things, substantially improved compressed, lay-flat properties (i.e., significantly reduced bowing) as compared to conventional perforated paper containing books, pamphlets, and the like. Additionally, the inventive articles have surprisingly high strength on the lines of perforation and low paper slippage as well. The inventive processes provide for an easy and efficient way to produce brochures, pamphlets, signatures, and other paper-based products which are easy to handle, store, and transport.

Les brochures, carnets, livres et autres objets analogues, constitués de plusieurs feuilles perforées par laser pour un façonnage par pliage puis piqûre (ou par piqûre et pliage) selon les lignes de perforation, sont considérablement moins épais et restent mieux à plat (c'est-à-dire ont moins tendance à bomber) que lorsque leurs perforations sont réalisées selon les techniques classiques. En outre, les objets concernés par l'invention ont une bien meilleure résistance au niveau de la ligne de perforation et présentent un déramage moins important. Le procédé inventé facilite et rend plus efficace la production des brochures, carnets et cahiers ainsi que des autres produits à base de papier car ils sont plus faciles à manipuler, à stocker et à transporter.

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