D - Textiles – Paper – 04 – H
Patent
D - Textiles, Paper
04
H
D04H 1/56 (2006.01) A41D 13/00 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B65H 54/82 (2006.01) D04H 3/07 (2006.01) D06H 7/12 (2006.01)
Patent
CA 2346795
Multilayer meltblown fibrous webs, as well as apparatus and methods of forming the webs. The webs are produced on a rotating collector that also moves parallel to its longitudinal axis. The webs are thus formed in a helical process, and the resulting tubular web is separated in a direction parallel to a helix angle. By separating the tubular web in a direction parallel to the helix angle, a flat multilayer meltblown fibrous web is provided that allows for incorporation of feathered edges formed during the article's manufacture.
L'invention concerne des voiles fibreux de fusion-soufflage multicouches ainsi qu'un appareil et des procédés de formation de ces voiles que l'on produit sur un collecteur rotatif se déplaçant parallèle à son axe longitudinal. Les voiles sont formés par coupe hélicoïdale et le voile tubulaire ainsi obtenu est séparé dans un sens parallèle à un angle de torsion. En séparant le voile tubulaire dans un sens parallèle à l'angle de torsion, on obtient un voile de fusion-soufflage plat multicouches contenant des bords arrondis formés pendant la fabrication de l'article.
Berrigan Michael R.
Dyrud James F.
Erickson Luther E.
Erickson Stanley C.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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