US 12,404,634 B2
Device and method for producing a fibrous web
Calvin Hayden, Sherwood, WI (US); Greg Elliott, Cincinnati, OH (US); George Graves, St Francisville, LA (US); and Paul Brant, Rincon, GA (US)
Assigned to Voith Patent GmbH, Heidenheim (DE)
Appl. No. 18/256,248
Filed by Voith Patent GmbH, Heidenheim (DE)
PCT Filed Dec. 3, 2021, PCT No. PCT/EP2021/084125
§ 371(c)(1), (2) Date Jun. 7, 2023,
PCT Pub. No. WO2022/122576, PCT Pub. Date Jun. 16, 2022.
Claims priority of provisional application 63/122,225, filed on Dec. 7, 2020.
Prior Publication US 2024/0018721 A1, Jan. 18, 2024
Int. Cl. D21F 11/14 (2006.01); D21F 7/08 (2006.01); D21F 9/00 (2006.01)
CPC D21F 11/14 (2013.01) [D21F 7/08 (2013.01); D21F 9/003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A device for producing a fibrous web or tissue web, the device comprising:
a first press having a press nip, a first felt and a second felt, said first and second felts both being guided through said press nip of said first press;
a Yankee cylinder for drying the fibrous web;
a transfer press for transferring the fibrous web to said Yankee cylinder, said transfer press having a press nip, said second felt being guided through said press nip of said transfer press; and
said second felt having an outermost paper-contacting side formed of a nonwoven layer including at least 80 wt. % of nonwoven fibers formed of polyamide or polyamides having a fineness of 3.3 dtex and less.