D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 9/00 (2006.01) D21F 9/02 (2006.01)
Patent
CA 2212695
A twin wire former has a lower wire extending between an open mesh forming roll and a turning roll. An upper wire joins the lower wire over the forming roll and the upper and lower wires follow a curved generally downwardly extending path or forming zone. The top ply is formed between the upper and the lower wires. A headbox supplies a stream of stock onto the lower wire as the lower wire wraps around the open mesh forming roll. As the lower wire approaches the apex of the forming roll it is joined by the top wire. The upper side of the web is dewatered solely by wire tension and centrifugal forces whichprevent fines and filler materials from being removed in the dewatering process.The turning roll brings the upper side of the web into engagement with a base ply on a base wire.
Beloit Technologies Inc.
Ridout & Maybee Llp
LandOfFree
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