Multiple layer directionally oriented nonwoven fiber...

D - Textiles – Paper – 04 – H

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D04H 1/74 (2006.01) D04H 1/64 (2006.01)

Patent

CA 2553162

Disclosed herein are embodiments of a multi-layer nonwoven fiber material, and related methods of manufacturing the material. In one exemplary embodiment, the fiber material includes a first layer of directionally aligned fibers together with a second layer of randomly dispersed fibers dispersed over the first layer. Consistent with one exemplary method for manufacturing a nonwoven fiber material, the method includes dispersing a first plurality of fibers horizontally in one or more predetermined directions, as well as dispersing a second plurality of fibers horizontally in random directions. In such an embodiment, the second plurality of fibers is dispersed over the first plurality of fibers. Moreover, an exemplary embodiment of a roofing shingle employing a nonwoven fiber material as described herein is as disclosed.

Des modes de réalisation de l'invention concernent un matériau fibreux non tissé multicouche, et des méthodes associées de fabrication de ce matériau. Dans un mode de réalisation d'exemple de l'invention, ce matériau fibreux comprend une première couche de fibres directionnellement alignées ensemble et une seconde couche de fibres aléatoirement dispersées, dispersées sur la première couche. Selon une méthode d'exemple de fabrication d'un matériau fibreux non tissé de l'invention, la méthode consiste à disperser une première pluralité de fibres horizontalement dans au moins une direction prédéterminée, et à disperser une seconde pluralité de fibres horizontalement dans des directions aléatoires. Dans un tel mode de réalisation de l'invention, la seconde pluralité de fibres est dispersée sur la première pluralité de fibres. En outre, dans un mode de réalisation d'exemple de l'invention, un bardeau de toit faisant appel à un matériau fibreux est décrit dans la description.

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