D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 7/08 (2006.01) D21F 1/00 (2006.01)
Patent
CA 2532735
A grooved perforated layer for use in a papermakers' fabric is provided. The grooves (8) serve to diffuse flow at the surface of the perforated (6) layer so as to reduce the pressure drop across the layer and thereby reduce the migration of fines. In this manner, the light/dark pattern associated with the fines is avoided and the quality of the resulting paper sheet is improved.
La présente invention a trait à une nappe à sillons et perforations destinée à être utilisée dans un tissu de fabrication de papier. Les sillons (8) servent à la diffusion de flux à la surface d'une nappe perforée (6) en vue de la réduction de perte de pression à travers la nappe réduisant ainsi la migration de fines. Ainsi, on élimine le motif clair/foncé associé aux fines et on réalise une qualité améliorée de la feuille de papier obtenue.
Albany International Corp.
Nelligan O'brien Payne Llp
LandOfFree
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