Limiting orifice drying medium, apparatus therefor, and...

D - Textiles – Paper – 21 – F

Patent

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D21F 5/18 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2294319

A limiting orifice through-air-drying medium for papermaking or other absorbent embryonic webs. The medium may be used in an apparatus which can be embodied in a cover and a roll. The medium has the unique combination of a relatively high binding fatigue strength and relatively low pressure drop. The medium may comprise a laminate of a plurality of plies. The intermediate plies of the laminate may be woven with a square weave. The medium may also be used for other types of drying.

Cette invention concerne un matériau de séchage à passage d'air et à orifices limiteurs qui est destiné à la fabrication du papier ou d'autres voiles absorbants se trouvant aux premiers stades de fabrication. Ce matériau peut être utilisé dans un appareil pouvant se présenter sous forme d'une couverture et d'un rouleau. Ce matériau possède une combinaison unique qui associe une résistance relativement élevée à la fatigue par torsion à une baisse de pression relativement faible. Ce matériau peut consister en un laminât qui comprend plusieurs feuillets, les feuillets intermédiaires pouvant être tissés selon un tissage carré. Ce matériau peut également être utilisé pour d'autres types de séchage.

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