Patterned non-woven fabrics of improved tensile strength

Details Patterned non-woven fabrics of improved tensile strength Patterned non-woven fabrics of improved tensile strength

D - Textiles, Paper

04

H

D04H 11/00 (2006.01) B32B 3/00 (2006.01) B32B 7/14 (2006.01) D04H 1/66 (2006.01)

Patent

CA 2155421

There is disclosed an improved non-woven fabric comprising a layer of staple length fibers and a binder material diffused substantially through the fabric adhering fiber ends together to provide fabric strength. The improvement, is based on the binder being arranged in a pattern in segments. These segments running substantially perpendicular to the orientation of the fibers (or the machine direction), and the pattern within these segments have a plurality of repeats within each segment and a repeat of said total segment pattern in alternate segments. The components of this pattern are mutually laterally displaced from each other in sequential segments, at least 80% of the components of said pattern being at an angle of between at least 10° to not more than 70° relative to the orientation of the majority of the fibers (or the machine direction).

L'invention se rapporte à un non-tissé amélioré comprenant un couche de fibres discontinues ainsi qu'un liant diffusé sensiblement dans tout le non-tissé et collant les extrémités des fibres entre elles afin d'accroître la résistance du tissu. Le perfectionnement réside dans le fait que le liant est disposé en segments (10, 11) de motif. Ces segments (10, 11) s'étendent dans une direction généralement sensiblement à l'orientation des fibres (ou au sens machine). Le motif présenté par ces segments (10, 11) se répète plusieurs fois dans chaque segment, et le motif d'un segment complet se répéte dans des segments alternés (10, 11). Les éléments de ce motif sont décalés latéralement les uns par rapport aux autres dans des segments successifs, au moins 80 % des éléments dudit motif étant orientés à un angle compris entre 10 DEG et 70 DEG par rapport à l'orientation de la majeure partie des fibres (ou au sens machine).

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