公开(公告)号：US11293143B2

公开(公告)日：2022-04-05

申请号：US16757525

申请日：2018-10-10

申请人： SOLENIS TECHNOLOGIES CAYMAN, L.P.

发明人： Christoph Hamers ,  Anton Esser ,  Frans De Bruyn ,  Christopher Alan Gray ,  Ralph Isermann

IPC分类号： D21H21/20 ,  D21F11/04 ,  D21H17/34 ,  D21H17/37 ,  D21H23/50 ,  D21H27/30

摘要： A method to produce dried single-layer or multi-layer paper is disclosed. The method comprises, for a single-layer paper, preparing and spraying a partially dehydrated first fibrous web with a spray solution or suspension to give a sprayed partially dehydrated first fibrous web, and dehydrating the sprayed partially dehydrated first fibrous web by applying heat to form a dried single-layer paper; or, for a multi-layer paper, preparing and spraying a partially dehydrated layer compound with a spray solution or suspension to form a sprayed layer compound, and dehydrating the sprayed layer compound by applying heat to form a dried multi-layer paper. The spray solution or suspension comprises water and at least one water-soluble polymer P, which is obtained by polymerizing: (i) a monomer of formula H2CCHNHC(0)R1, where R1 is H or C1-C6- alkyl; and (ii) one or more ethylenically unsaturated monomers different from monomer (i).