Patterned papermachine clothing

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 1/10 (2006.01)

Patent

CA 2421210

A papermaking belt for use in making paper. The papermaking belt, which has a paper-contacting face and a machine-contacting face, may be used in conjunction with a single-wire draw or twin-wire draw of a papermaking machine. The papermaking belt comprises a woven reinforcing element and a patterned framework. The framework defines either or both faces of the papermaking belt, such that a first face of the framework provides at least 90% of the surface area of the paper- contacting face. The pattern of the framework is independent of the weave of the reinforcing element. This arrangement decouples the amount and pattern of the paper- contacting surfaces of the belt from the weave and/or permeability of the belt. Further, this arrangement allows for increased and more uniform contact area of the paper web against a drying cylinder. Additionally, this belt provides an increased wear surface for improved belt life.

Cette invention a trait à une bande pour fabrication de papier, utilisable pour fabriquer du papier rigide, tel que du papier kraft pour impression, du papier à journaux, du papier de couverture et du papier fin ou à écrire. On peut utiliser cette bande conjointement avec un système de tirage de machine à papier à simple toile ou à toiles géminées. Cette bande comporte un élément de renfort tissé et un cadre à motifs. Ce dernier se trouve sur l'une des faces de la bande de fabrication de papier ou sur les deux. Le motif du cadre est indépendant du treillis de l'élément de renfort. Cet agencement découple le nombre et le motif des surfaces entrant en contact avec le papier de la bande et/ou la perméabilité de la bande. Cet agencement permet d'accroître la zone de contact de la bande de papier portant sur un rouleau de séchage et de la rendre plus uniforme. La surface d'usure est, en outre, plus importante, ce qui augmente la durée de vie utile de la bande.

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