Papermaking fabric for making soft tissue products

Details Papermaking fabric for making soft tissue products Papermaking fabric for making soft tissue products

D - Textiles, Paper

21

C

D21C 9/00 (2006.01) D03D 23/00 (2006.01) D21F 1/00 (2006.01) D21F 11/00 (2006.01) D21H 11/00 (2006.01) D21H 17/00 (2006.01)

Patent

CA 2163096

A throughdrying fabric (70) for the drying section of a papermaking machine is disclosed in several embodiments. In each embodiment, the fabric (70) has a load-bearing layer (72) and a sculpture layer (75). The sculpture layer (75) is characterized by impression MD knuckles, in the present instance formed as warp knuckles (74') floating over a plurality of shutes (73) but positioned substantially above the tops of the lowest shute knuckles in the load-bearing layer so as to provide machine direction knuckles projecting in the sculpture layer (75). Methods of weaving the fabric (70) are disclosed using a standard fourdrinier loom (Fig. 17). The loom may embody an auxiliary jacquard mechanism (152) which is effective to control the impression warps in the sculpture level (75) to produce a wide variety of patterns of impression knuckles which, in turn, produce an image on the pulp web which the throughdrying fabric (70) carries through the machine.

Toile de séchage (70) destinée à la sécherie d'une machine à papier, et ses variantes. Dans chacune d'elles, la toile comporte une couche support (72) et une couche à motifs (75). Ladite couche (75) se caractérise par des filets d'impression longitudinaux (dans le sens machine) qui dans le cas présent se présentent sous la forme de filets de chaîne (74') flottant au-dessus de filets de trame (73), mais sensiblement positionnés au-dessus des plus bas des filets de trame dans la couche support et saillant dans la couche à motifs (75). L'invention porte également sur un procédé de tissage de ladite toile à l'aide d'un métier Fouldrinier usuel (fig. 17) pouvant comporter une mécanique Jacquard (152) auxiliaire de commande des chaînes d'impression de la couche à motifs (75) permettant l'impression d'une grande variété de motifs de filets d'impression sur la feuille continue de pâte que la toile de séchage (70) transporte à travers la machine.

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