Process for preparing a non-woven fibrous web

D - Textiles – Paper – 04 – H

Patent

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Details

D04H 1/56 (2006.01) D04H 1/42 (2006.01) D04H 1/54 (2006.01) D04H 3/14 (2006.01) D04H 3/16 (2006.01)

Patent

CA 2461385

Disclosed is a process for preparing a fibrous web. The fibrous web includes a microencapsulated material, such as a microencapsulated phase change material, adhered to the web. Preferably, the web is prepared in a melt-blowing or spun- bonding process. In the melt-blowing (12) process, cooling water (17) containing the microcapsules is used to cool melt blown fibers prior to collection on a collector (16). In the spun-bonding (21) process, microcapsules are applied in liquid suspension or in dry form to a heated web, for instance, after the web has been calendered (28, 29). The fibrous webs thus prepared have numerous uses, and are particularly suited to the manufacture of clothing.

L'invention concerne un procédé de préparation d'un voile fibreux. Ce voile fibreux comprend un matériau micro-encapsulé, notamment un matériau à changement de phase micro-encapsulé, collé audit voile. De préférence, le voile est préparé par un procédé de fusion-soufflage ou de filage direct. Dans le procédé de fusion-soufflage (12), de l'eau de refroidissement (17) contenant des microcapsules est utilisée pour refroidir des fibres ayant subi un procédé de fusion-soufflage, avant d'être recueillie dans un collecteur (16). Dans le procédé de filage direct (21), des microcapsules sont appliquées en suspension liquide ou sous forme sèche, sur un voile chauffé, par exemple, une fois que le voile a été calandré (28, 29). Les voiles fibreux ainsi préparés sont adaptés à de nombreuses utilisations, et en particulier à la fabrication de vêtements.

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