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    METHOD FOR MANUFACTURING A FIBROUS WEB
    13.
    发明申请
    METHOD FOR MANUFACTURING A FIBROUS WEB 有权

    公开(公告)号：US20210189646A1

    公开(公告)日：2021-06-24

    申请号：US16758058

    申请日：2018-11-08

    Applicant: Kemira Oyj

    Inventor： Juhana Ahola ,  Marko Kolari

    IPC: D21C5/00 ,  D21H21/24 ,  D21H21/36 ,  D21H17/11 ,  D21H17/66 ,  A01N47/44 ,  A01N59/00 ,  C02F1/50

    Abstract: A method for manufacturing a fibrous web, such as web of paper, board, tissue or the like is disclosed. The method includes obtaining at least one fibre suspension of lignocellulosic and/or cellulosic fibres and feeding the fibre suspension into an intermediate residence entity. The fibre suspension including bacterial endospores, is discharged out of the intermediate residence entity via an outlet after a residence time of at least 2 hours in the intermediate residence entity and after a time delay the fibre suspension is formed into a fibrous web. Bacterial endospores are sensitized by adding a germinant surfactant including a primary or secondary ammonium head group and a linear unsubstituted C12-alkyl tail, to the fibre suspension at an addition point located at a lower part of the intermediate residence entity or after the outlet of the intermediate residence entity, but before the formation of the fibrous web.

    Method for manufacturing a fibrous web
    14.
    发明申请
    Method for manufacturing a fibrous web 审中-公开

    公开(公告)号：US20200095730A1

    公开(公告)日：2020-03-26

    申请号：US16619109

    申请日：2018-06-19

    Applicant: Kemira Oyj

    Inventor： Jaakko Ekman ,  Marko Kolari ,  Juhana Ahola

    IPC: D21H21/04 ,  D21C5/00 ,  D21C9/08 ,  D21D5/28 ,  D21H21/36 ,  D21H23/78 ,  G01N33/34 ,  G01N33/18

    Abstract: A method includes forming an aqueous fibre suspension including cellulosic fibres from one or more raw material flows, and applying at least one chemical and/or physical control measure to the aqueous fibre suspension or at least one of its raw material flows for control of microbial activity in the aqueous fibre suspension or the raw material flow before an inlet of an intermediate residence entity. In this manner a starting ORP value for the aqueous fibre suspension is obtained. The aqueous fibre suspension is in the intermediate residence entity at least a minimum delay time. A final ORP value is measured for the aqueous fibre suspension after an outlet of the said intermediate residence entity before the formation of the fibrous web. An ORP difference value between the starting ORP and final ORP values is calculated. Finally, the aqueous fibre suspension is formed into a fibrous web and dried.

    Method for making of paper, tissue, board or the like
    17.
    发明授权
    Method for making of paper, tissue, board or the like 有权
    纸，纸巾，纸板等的制造方法

    公开(公告)号：US09279217B2

    公开(公告)日：2016-03-08

    申请号：US14380323

    申请日：2013-02-22

    Applicant: KEMIRA OYJ

    Inventor： Matti Hietaniemi ,  Kimmo Strengell ,  Asko Karppi ,  Marko Kolari ,  Jaakko Ekman

    IPC: D21H17/66 ,  D21H17/28 ,  D21H11/14 ,  D21H27/00 ,  D21H17/37 ,  D21H17/55 ,  D21H17/63

    CPC classification number: D21H17/66 ,  D21H11/14 ,  D21H17/28 ,  D21H17/37 ,  D21H17/55 ,  D21H17/63 ,  D21H27/002

    Abstract: The invention relates to a method for making of paper, tissue, board or the like by using recycled fiber material as a raw material. The method comprises following steps: pulping recycled paper, board or the like in a pulper and obtaining a pulp flow comprising (i) an aqueous phase and (ii) at least recycled fibers and starch having low molecular weight, which are dispersed in the aqueous phase; adding a coagulant agent to the pulp flow or to an aqueous process flow comprising starch having low molecular weight; allowing the coagulant agent to interact with the starch having low molecular weight and optionally forming aggregates; and adding at least one flocculating agent, after the addition of the coagulant agent, to any flow, which comprises interacted coagulant agent, and forming a treated flow with starch comprising agglomerate(s); retaining at least part of the said aggregates and/or the said agglomerates to the fibers or to a web, which is formed.

    Abstract translation: 本发明涉及通过使用再生纤维材料作为原料来制造纸，纸板，纸板等的方法。 该方法包括以下步骤：在碎浆机中制浆再循环的纸，板等，并获得纸浆流，其包含（i）水相和（ii）至少回收的纤维和低分子量的淀粉，其分散在水性 相; 向纸浆流中加入凝结剂或包含低分子量淀粉的含水工艺流程; 使凝结剂与低分子量的淀粉相互作用并任选地形成聚集体; 在加入凝结剂之后，将至少一种絮凝剂加入到包含相互作用的凝结剂的任何流动中，并用包含附聚物的淀粉形成经处理的流体; 将所述聚集体和/或所述附聚物的至少一部分保留在所形成的纤维或纤维网上。

    Cellulose composition
    18.
    发明授权
    Cellulose composition 有权

    公开(公告)号：US12297597B2

    公开(公告)日：2025-05-13

    申请号：US17261191

    申请日：2019-07-19

    Applicant: KEMIRA OYJ

    Inventor： Kaisa Karisalmi ,  Jaakko Ekman ,  Marko Kolari ,  Satu Ikavalko ,  Boris Dossman

    IPC: D21H11/18 ,  C08H8/00 ,  C08L1/02 ,  C08L5/06 ,  C08L5/14 ,  C08L89/00 ,  D21H21/18 ,  D21H21/36

    Abstract: The present invention relates to a microfibrillated cellulose composition comprising microfibrillated cellulose originating from agricultural biomass, comprising: ≥30 wt % cellulose, 1-15 wt % pectin, 8-25 wt % hemicellulose, 0-12 wt %, lignin, 0-15 wt % ash, and 0-8 wt % protein, based on dry solids content of said microfibrillated cellulose; and a biocide composition comprising at least two biocidal components, wherein the at least two biocidal components are selected from the groups of biocidal components consisting of: Group I: compounds with activated halogen atoms, Group II: heterocyclic N—S compounds, Group III: aldehydes, and Group IV: surface active biocidal compounds selected from the group consisting of quaternary ammonium compounds, long-chain alkylamines, guanidines and biguanidines, and any combination thereof, and the at least two biocidal components are selected from at least two different groups. The present invention further relates to its manufacture, and use in and manufacture of paper and paperboard products.

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