Heating apparatus and process for drawing polyolefin fibers

Details Heating apparatus and process for drawing polyolefin fibers Heating apparatus and process for drawing polyolefin fibers

D - Textiles, Paper

02

J

D02J 1/22 (2006.01) D02J 13/00 (2006.01)

Patent

CA 2634713

A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefln fibers, such as polyethylene libers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the exit of the ovens which rolls are adapted to provide the desired drawing of the polyolefin fibers. The apparatus and process provide a single draw step in a heated environment, with the use of preferably four or six horizontal ovens.

L'invention concerne un appareil et un procédé de chauffage qui peuvent être utilisés pour étirer des fibres de polyoléfine à poids moléculaire ultra-élevé, par exemple des fibres de polyéthylène. L'appareil de chauffage comprend un premier ensemble de rouleaux et plusieurs fours alignés. L'appareil présente à la sortie des fours un deuxième ensemble de rouleaux qui sont adaptés pour assurer l'étirage souhaité des fibres de polyoléfine. L'appareil et le procédé permettent l'étirage en une passe dans un environnement chauffé en recourant de préférence à quatre à six fours horizontaux.

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