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公开(公告)号：US11578439B2
公开(公告)日：2023-02-14
申请号：US16331553
申请日：2017-09-11
发明人： Thomas Weigert , Kai Poehler , Ralf Schroeder
摘要： A method of manufacturing a wet-laid nonwoven web includes the following steps: feeding a pulp suspension onto a forming screen for depositing a fibrous web thereon, wherein the pulp suspension has industrially produced, inorganic fibers or fibers of synthetically produced polymers and the pulp suspension is substantially free from binders, such as chemical binders, and hydraulic consolidation of the fibrous web to generate the nonwoven web through water jet needling of the fibrous web.
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公开(公告)号：US11118309B2
公开(公告)日：2021-09-14
申请号：US16531321
申请日：2019-08-05
申请人： VOITH PATENT GMBH
发明人： Ralf Schroeder
摘要： A device dewaters a wet-laid non-woven web formed from a fibrous suspension. The device has a multiplicity of dewatering strips which are disposed so as to be mutually spaced apart. Mutually neighboring dewatering strips conjointly delimit a dewatering gap for discharging liquid from the fibrous suspensions. The device further has at least three format slides which along the longitudinal direction of the respective dewatering gap are disposed or disposable so as to be distributed relative to one another and which partially obscure the dewatering gap in such a manner that any discharging of the liquid by way of the obscured part of the dewatering gap is prevented.
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