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    Method of producing a highly stretchable paper
    1.
    发明授权
    Method of producing a highly stretchable paper 有权

    公开(公告)号：US11339535B2

    公开(公告)日：2022-05-24

    申请号：US16500319

    申请日：2018-04-05

    申请人： BillerudKorsnäs AB

    发明人： Nils Nordling ,  Tommy Stenman ,  Erik Lindberg

    IPC分类号： D21F11/02 ,  D21G1/00 ,  D21H27/10

    摘要： There is provided a method of producing a paper having a grammage according to ISO 536 of 50-250 g/m2, a Gurley value according to ISO 5636-5 of above 15 s and a stretchability according to ISO 1924-3 in the machine direction of at least 9%, said method comprising the steps of: a) providing a pulp, preferably sulphate pulp; b) subjecting the pulp to refining; c) diluting the pulp from step b) and adding the diluted pulp to a forming wire to obtain a paper web; d) pressing and the paper web from step c); e) drying the paper web from step d); f) compacting the paper web from step e) in a Clupak unit at a moisture content of 32-50%, preferably 37-49%, more preferably 41-49%; g) calendering the paper web from step f), optionally after drying, at a moisture content of 21-40%, preferably 30-40%, more preferably 32-39%; h) drying the paper web from step g).

    Carton board
    4.
    发明授权
    Carton board 有权

    公开(公告)号：US10086585B2

    公开(公告)日：2018-10-02

    申请号：US15312774

    申请日：2015-06-08

    申请人： BILLERUDKORSNÄS AB

    发明人： Åke Reuterhage ,  Anders Gåsste ,  Johan Byman ,  Peter Bergström

    IPC分类号： B32B7/12 ,  B32B7/02 ,  B65D65/40 ,  D21H11/08 ,  B32B29/06 ,  B32B29/00 ,  B32B9/06

    摘要： A paper laminate comprising a first stretchable paper layer, a second stretchable paper layer and an intermediate paper layer arranged between the first and the second stretchable paper layer, characterized in that the stretchability (ISO 1924/3) of the first and the second stretchable paper layer is at least 5% in both the machine direction (MD) and the cross direction (CD) and the stretchability (ISO 1924/3) of the intermediate paper layer is less than 4% in the MD and/or the CD.

    METHOD OF PRODUCING A HIGHLY STRETCHABLE PAPER
    9.
    发明申请
    METHOD OF PRODUCING A HIGHLY STRETCHABLE PAPER 审中-公开

    公开(公告)号：US20200181843A1

    公开(公告)日：2020-06-11

    申请号：US16500319

    申请日：2018-04-05

    申请人： BillerudKorsnäs AB

    发明人： Nils Nordling ,  Tommy Stenman ,  Eric Lindberg

    IPC分类号： D21F11/02 ,  D21H27/10 ,  D21G1/00

    摘要： There is provided a method of producing a paper having a grammage according to ISO 536 of 50-250 g/m2, a Gurley value according to ISO 5636-5 of above 15 s and a stretchability according to ISO 1924-3 in the machine direction of at least 9%, said method comprising the steps of: a) providing a pulp, preferably sulphate pulp; b) subjecting the pulp to refining; c) diluting the pulp from step b) and adding the diluted pulp to a forming wire to obtain a paper web; d) pressing and the paper web from step c); e) drying the paper web from step d); f) compacting the paper web from step e) in a Clupak unit at a moisture content of 32-50%, preferably 37-49%, more preferably 41-49%; g) calendering the paper web from step f), optionally after drying, at a moisture content of 21-40%, preferably 30-40%, more preferably 32-39%; h) drying the paper web from step g).