D - Textiles – Paper – 01 – F
Patent
D - Textiles, Paper
01
F
D01F 2/00 (2006.01) B29C 43/22 (2006.01) B29C 47/00 (2006.01) B29C 55/00 (2006.01) B29D 7/01 (2006.01) D01D 5/06 (2006.01) D01D 10/04 (2006.01)
Patent
CA 2408304
The invention relates to a process for the manufacture of extruded, cellulose continuous moldings from an extrusion solution containing cellulose, water and a tertiary amine oxide. In order to improve the textile characteristics of the extruded continuous moldings in comparison with the state of the art, the invention provides that between an extrusion die opening and a draw-off unit (4) the continuous molding (5) is transported on a conveyor device (11) essentially without tensile stress. The transport speed of the conveyor device (11) inserted in between is preferably lower than the extrusion speed and the draw-off speed of the draw-off unit (24). These measures considerably improve the textile characteristics such as loop strength and tendency to fibrillation.
L'invention concerne un procédé permettant de produire des corps moulés cellulosiques continus, extrudés à partir d'une solution d'extrusion contenant de la cellulose, de l'eau et de l'oxyde d'amine tertiaire. Afin d'améliorer les propriétés textiles des corps moulés continus extrudés, comparativement à l'état de la technique, il est prévu selon l'invention, de transporter le corps moulé continu entre une ouverture de filière d'extrusion et un système d'évacuation (24), sur un convoyeur (11) sensiblement sans traction. La vitesse de transport du convoyeur (11) intercalé est à cet effet de préférence inférieure à la vitesse d'extrusion et à la vitesse d'évacuation du système d'évacuation (24). Cette mesure permet d'améliorer considérablement les propriétés textiles telles que la résistance à la formation de boucles et la tendance à la fibrillation.
Ecker Friedrich
Zikeli Stefan
Riches Mckenzie & Herbert Llp
Zimmer Aktiengesellschaft
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