D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
139/62
D21F 1/10 (2006.01) D03D 13/00 (2006.01) D21F 1/00 (2006.01)
Patent
CA 1318219
ABSTRACT Double-layered fabric for paper making machines having a coarse-structure bottom side and a fine- structure forming side. Forming fabrics of this kind have a set of warp strands and at least two sets of weft strands which are interwoven at least in a six-shaft repeat, so that a weft strand set on the bottom side constitutes a primary wearing plane and the remaining weft strands or sets of weft strands are arranged on the forming side and may differ from each other in respect of diameter and/or float lengths. Modern, fast and high- performance but more sensitive printing processes require highest-quality paper grades. However, so far the above- mentioned quality features could not be optimized for double-layered fabrics. The double-layered fabric is improved in such a way that it meets highest demands in respect of a fine-meshed structure on the forming side and a coarse-meshed structure on the bottom side as well as its wearing characteristics. This is achieved in that at least portions of the bottom-side weft strands constitute multi-strands each formed of at least two closely adjacent strands which are tied up by different warp strands.
549300
F. Oberdorfer Siebtechnik Gmbh
Perley-Robertson Hill & Mcdougall Llp
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