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    METHOD OF PRODUCING A CELLULOSE FIBER STRUCTURE AND A FIBER STRUCTURE
    2.
    发明申请
    METHOD OF PRODUCING A CELLULOSE FIBER STRUCTURE AND A FIBER STRUCTURE 审中-公开

    公开(公告)号：WO2022144682A1

    公开(公告)日：2022-07-07

    申请号：PCT/IB2021/061939

    申请日：2021-12-17

    Applicant: STORA ENSO OYJ

    Inventor： PENG, Frank ,  HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAZEMAHVAZI, Sohrab

    IPC: D21J7/00 ,  C09D101/02 ,  D21H11/18 ,  D21J3/00 ,  D21J5/00 ,  C08L1/02 ,  D21H19/12 ,  D21H21/18

    Abstract: The invention discloses a method for producing a three-dimensional molded article from cellulose fibers, comprising the steps of: -providing a pulp molding composition; -molding a three-dimensional precursor structure from said composition wherein said structure comprises a dry content between 15-80wt%; -providing an aqueous suspension comprising microfibrillated cellulose; -applying the aqueous suspension onto at least one face of said precursor structure to create a surface barrier layer on said structure; and -dewatering and drying said molded precursor structure under elevated temperature >150°C to a dry content of ≥88wt%, preferably ≥94wt%, more preferably ≥96% to achieve the three- dimensional molded article comprising a surface barrier layer.

    METHOD OF PRODUCING A CELLULOSE FIBER STRUCTURE AND A FIBER STRUCTURE
    3.
    发明申请
    METHOD OF PRODUCING A CELLULOSE FIBER STRUCTURE AND A FIBER STRUCTURE 审中-公开

    公开(公告)号：WO2022144681A1

    公开(公告)日：2022-07-07

    申请号：PCT/IB2021/061938

    申请日：2021-12-17

    Applicant: STORA ENSO OYJ

    Inventor： PENG, Frank ,  HEISKANEN, Isto ,  BACKFOLK, Kaj ,  KAZEMAHVAZI, Sohrab

    IPC: D21J7/00 ,  C09D101/02 ,  D21H11/18 ,  D21H21/18 ,  D21J3/00 ,  D21J5/00 ,  C08L1/02 ,  D21H19/12

    Abstract: The invention discloses a method for producing a three-dimensional molded article from cellulose fibers, comprising the steps of: -providing a pulp molding composition; -molding a three-dimensional precursor structure from said composition wherein said structure comprises a dry content between 15-80wt%; -providing an aqueous suspension comprising microfibrillated cellulose and wet strength agent; -applying the aqueous suspension onto at least one face of said precursor structure to create a surface barrier layer on said structure; and -dewatering and drying said molded precursor structure under elevated temperature >150°C to a dry content of ≥88wt%, preferably ≥94wt%, more preferably ≥96% to achieve the three- dimensional molded article.

    MULTIPLY PAPERBOARD
    6.
    发明申请
    MULTIPLY PAPERBOARD 审中-公开
    多媒体纸板

    公开(公告)号：WO2015036932A1

    公开(公告)日：2015-03-19

    申请号：PCT/IB2014/064389

    申请日：2014-09-10

    Applicant: STORA ENSO OYJ

    Inventor： HALLGREN, Hans ,  PENG, Frank

    IPC: D21H27/38 ,  B32B29/00 ,  D21H21/18 ,  D21H27/10 ,  B65D65/40 ,  D21H11/00 ,  D21H17/24

    CPC classification number: D21H27/10 ,  B32B29/005 ,  B32B29/02 ,  B32B2262/062 ,  B32B2307/54 ,  B32B2307/546 ,  B32B2439/70 ,  D21H11/04 ,  D21H17/24 ,  D21H17/29 ,  D21H27/38

    Abstract: The present invention discloses a multi-ply paperboard for packaging of liquid and/or food products, which paperboard comprises a top ply, a back ply and at least one middle ply arranged between said top and back ply. The invention is characterized in that the back ply is made of unbleached hardwood pulp to 100% by weight, calculated on the total fiber weight of said back ply. It has surprisingly been found that the use of unbleached pulp in the back ply makes it possible to use 100% hardwood fibers in the back ply, calculated on the total fiber weight of the back ply, and still achieve a high quality board with an acceptable strength and bending resistance.

    Abstract translation: 本发明公开了一种用于包装液体和/或食品的多层纸板，该纸板包括顶层，背层和布置在所述顶层和背层之间的至少一层中间层。 本发明的特征在于，背层由未漂白的硬木浆制成，以所述背层的总纤维重量计算为100重量％。 令人惊讶地发现，在背层中使用未漂白的纸浆使得可以在背层中使用100％硬木纤维，根据背层的总纤维重量计算，并且仍然实现具有可接受的高质量板 强度和抗弯强度。

    Multiply Paperboard
    7.
    发明申请
    Multiply Paperboard 审中-公开
    倍增纸板

    公开(公告)号：WO2015036930A1

    公开(公告)日：2015-03-19

    申请号：PCT/IB2014/064386

    申请日：2014-09-10

    Applicant: STORA ENSO OYJ

    Inventor： HALLGREN, Hans ,  PENG, Frank

    IPC: D21H27/38 ,  B32B29/02 ,  D21H11/04 ,  D21H11/08 ,  D21H17/44

    CPC classification number: D21H17/44 ,  B32B29/005 ,  B32B2262/062 ,  B32B2262/067 ,  B32B2307/54 ,  B32B2307/546 ,  B32B2307/5825 ,  B32B2439/70 ,  D21H11/04 ,  D21H11/18 ,  D21H27/38

    Abstract: The invention discloses a multi-ply paperboard comprising pulp of cellulosic fibers, wherein 100% of the total fiber content of said paperboard are hardwood fibers. Contrary to prevailing assumptions, it has surprisingly been found that it is possible to produce a multi-ply paperboard of 100% hardwood pulp with a comparable strength, a higher bulk and a higher bending resistance as compared to a multi-ply paperboard comprising softwood pulp.The use of 100% hardwood pulp is economically favorable, since the access to softwood pulp is limited in large parts of the world. Moreover, a high amount of hardwood pulp in the paperboard improves the surface properties and the optical properties of the board.

    Abstract translation: 本发明公开了一种包含纤维素纤维纸浆的多层纸板，其中所述纸板的总纤维含量的100％是硬木纤维。 与普遍的假设相反，令人惊讶地发现，与包括软木浆的多层纸板相比，可以生产具有相当的强度，更高的体积和更高的抗弯曲性的100％硬木浆的多层纸板 使用100％硬木浆在经济上是有利的，因为在世界大部分地区获得软木浆是有限的。 此外，纸板中的大量硬木浆改善了板的表面性质和光学性能。

    METHOD OF PRODUCING A MOLDED FIBER PRODUCT AND MOLDED FIBER PRODUCT
    8.
    发明申请
    METHOD OF PRODUCING A MOLDED FIBER PRODUCT AND MOLDED FIBER PRODUCT 审中-公开

    公开(公告)号：WO2020165780A1

    公开(公告)日：2020-08-20

    申请号：PCT/IB2020/051112

    申请日：2020-02-12

    Applicant: STORA ENSO OYJ

    Inventor： KAZEMAHVAZI, Sohrab ,  JANSSON, Ulla ,  WEDIN, Irene ,  PENG, Frank

    IPC: D21J3/00 ,  B29C33/38 ,  B29C51/00 ,  D21J5/00 ,  D21J7/00

    Abstract: The invention discloses a method for producing a three dimensional molded product from cellulose fibers, comprising the steps of: -providing a cellulose fiber composition comprising 1-30wt% lignin, said cellulose fiber composition further having a solid content between 0.1-95%; -providing a forming tool having a three dimensional shape including a forming surface, and bringing said forming surface into contact with the cellulose fiber composition; and -press drying the cellulose fiber composition contacted by the forming tool at temperatures >200°C to a dry content of at least 70%. The invention also relates to a three dimensional fiber based product obtainable by means of said method.

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