公开(公告)号：US20220290374A1

公开(公告)日：2022-09-15

申请号：US17636723

申请日：2020-08-18

申请人： CREAPAPER GmbH

发明人： Uwe D'AGNONE

IPC分类号： D21H17/17 ,  B65D5/40 ,  B65D65/46 ,  D21F11/00 ,  D21H11/12 ,  D21H11/14 ,  D21H19/34 ,  D21H21/10 ,  D21H27/10

摘要： The method according to the invention for producing a grass fibre-containing liquid packaging board has the following steps, specifically: providing a fibre suspension formed from at least a first and second pulp type, wherein the first pulp type is constituted by grass fibres, and the second pulp type is selected from a group of pulps which comprises primary fibres such as chemical pulp, for example sulphate pulp or sulphite pulp, in each case based on long-fibre wood or short-fibre wood, wood pulp, and synthetic fibres or recycled fibres based on one or more recycled paper classifications, mixing and/or swelling the fibres in the pulp suspension under predefined conditions with respect to material density and temperature, grinding the at least two pulp types together in a pulp suspension to a degree of dewatering between 40° SR and 60° SR, adding starch and/or a sizing agent as an additive in the mass, diluting the pulp suspension and producing a board on a paper machine, surface sizing the board using at least one starch-containing suspension, and drying the paper structure to a dry content between 4% and 10%.