Improved deflection members for tissue production

D - Textiles – Paper – 21 – F

Patent

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D21F 11/00 (2006.01) D21F 11/14 (2006.01)

Patent

CA 2424752

Improved deflection members are disclosed for imparting texture to a web through the use of pressing, imprinting, or related technologies, In one embodiment, such deflection members include fabrics having raised elements that contact the web and deflection conduits, wherein the deflection member comprises geometries and/or materials capable of creating asymmetrical domes, either through contact in a compression nip or by imprinting the web onto the Yankee dryer. Deflection members of the present invention can include those with elastomeric components in the raised elements, those comprising asymmetrical geometries in the raised elements, those comprising two or more subsets of raised elements having different material properties or geometries, and other fabrics with novel construction and materials.

L'invention concerne des éléments déflecteurs améliorés servant à donner une certaine texture à une bande de papier par des techniques de pressage, de gaufrage ou analogues. Dans un mode de réalisation, ces éléments déflecteurs comprennent des structures comportant des élévations en contact avec la bande de papier et des conduits déflecteurs, l'élément déflecteur comprenant des géométries et/ou des matières pouvant créer des dômes asymétriques, soit par contact dans une ligne de compression soit par gaufrage de la bande de papier sur le frictionneur. Les éléments déflecteurs selon la présente invention peuvent comprendre des composants élastomères ou des géométries asymétriques dans les élévations, au moins deux sous-ensembles d'élévations présentant différentes géométries ou propriétés de matières, ainsi que d'autres structures avec une nouvelle conception et de nouvelles matières.

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