Dryer screen

Details Dryer screen Dryer screen

D - Textiles, Paper

21

F

D21F 7/08 (2006.01) D21F 1/00 (2006.01)

Patent

CA 2407193

In cross section, dryer screen has flat machine warp threads, and substantially round strongly shrinking cross direction weft threads. The threads form a single-layer wire cloth, and are shifted closer to one another due to cross directional shrinkage of the wire during heat treatment. Each warp thread in the wire cloth passes above two weft threads on the paper side of the cloth, below one weft thread on the machine side of the cloth. The adjacent warp threads show a shift of one weft thread in the machine direction. Each warp thread passes one weft thread in relation to the previous warp thread from a different point to the paper side and correspondingly to the machine side. After weaving, the paper side surface has empty spaces at the points where the warp threads pass below the weft thread. Each warp thread overlaps the adjacent warp threads at the empty spaces.

L'invention concerne un tamis de séchage tissé par des fils (1) dirigés à plat sur la machine et des fils (2) dirigés dans un sens transversal de la machine. Après le tissage, on soumet le textile à un traitement thermique et, sous l'effet du rétrécissement important des fils de trame, les fils de chaîne contigus se chevauchent côté papier (B).

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