公开(公告)号：US20240263401A1

公开(公告)日：2024-08-08

申请号：US18561430

申请日：2022-05-13

申请人： Stora Enso OYJ

发明人： Isto Heiskanen ,  Jukka Kankkunen ,  Ismo Saarinen ,  Jukka Lyyra ,  Juha Rvenniemi ,  Harri Taipale ,  Hannu Heikkinen

IPC分类号： D21H27/40 ,  D21F11/12 ,  D21H11/04 ,  D21H11/06 ,  D21H11/14 ,  D21H21/16 ,  D21H27/38

CPC分类号： D21H27/40 ,  D21F11/12 ,  D21H11/04 ,  D21H11/06 ,  D21H11/14 ,  D21H21/16 ,  D21H27/38

摘要： The present invention relates to a multi-ply liner for use in corrugated board, said multi-ply liner comprising: a first ply, and a second ply, wherein said first ply comprises at least 70 wt % unbleached kraft pulp and between 5-30 wt % neutral sulfite semi chemical (NSSC) pulp based on dry weight, and wherein said second ply comprises at least 50 wt % NSSC pulp and between 5-50 wt % unbleached kraft pulp based on dry weight.

公开(公告)号：US20240254694A1

公开(公告)日：2024-08-01

申请号：US18561431

申请日：2022-05-13

申请人： Stora Enso OYJ

发明人： Isto Heiskanen ,  Jukka Kankkunen ,  Ismo Saarinen ,  Jukka Lyyra ,  Juha Rvenniemi ,  Harri Taipale ,  Hannu Heikkinen

IPC分类号： D21F11/12 ,  D21H11/14 ,  D21H27/40

CPC分类号： D21F11/12 ,  D21H11/14 ,  D21H27/40

摘要： A method for manufacturing fluting and/or liner for corrugated board, comprising the step(s): a) using broke obtained from manufacturing of liner in the pulp used for manufacturing of fluting wherein at least 50% of the broke is external broke from the manufacturing of liner, and/or b) using broke obtained from manufacturing of fluting in the pulp used for manufacturing of liner wherein at least 50% of the broke is external broke from the manufacturing of fluting.