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    Treated pulp and methods of making and using same
    1.
    发明授权
    Treated pulp and methods of making and using same 有权

    公开(公告)号：US11932990B2

    公开(公告)日：2024-03-19

    申请号：US17931168

    申请日：2022-09-12

    申请人： INTERNATIONAL PAPER COMPANY

    发明人： Andre Stephan Hajnal

    IPC分类号： D21C9/00 ,  D21C9/18 ,  D21H17/06 ,  D21H21/06

    CPC分类号： D21C9/002 ,  D21C9/18 ,  D21H17/06 ,  D21H21/06

    摘要： Disclosed herein are treated pulp sheets comprising cellulose pulp fibers treated with a densifying agent and having a relatively low moisture content. In certain embodiments, the treated pulp sheets are used to produce fiberized pulp having an unexpectedly low knot content, while maintaining density and softness properties usually associated with similarly treated pulp that is fiberized at higher moisture content. Methods of making fiberized pulp from the treated pulp sheets, as well as products comprising the treated pulp sheets or fiberized pulp from the treated pulp sheets, are also provided.

    MODIFIED FIBER, METHODS, AND SYSTEMS
    2.
    发明申请
    MODIFIED FIBER, METHODS, AND SYSTEMS 审中-公开

    公开(公告)号：US20180258589A1

    公开(公告)日：2018-09-13

    申请号：US15976654

    申请日：2018-05-10

    申请人： International Paper Company

    发明人： Charles E. Miller

    IPC分类号： D21H11/20 ,  B01J19/24 ,  C08J3/24 ,  D21C9/00

    CPC分类号： D21H11/20 ,  B01J19/2405 ,  B01J2219/24 ,  C08J3/24 ,  C08J3/246 ,  C08J2301/02 ,  C08J2333/02 ,  C08J2433/02 ,  D21C9/00 ,  D21C9/001 ,  D21C9/002 ,  D21C9/005

    摘要： Methods of forming crosslinked cellulose include mixing a crosslinking agent with an aqueous mixture of cellulose fibers containing little to no excess water (e.g., solids content of 25-55%), drying the resulting mixture to 85-100% solids, then curing the dried mixture to crosslink the cellulose fibers. Systems include a mixing unit to form, from an aqueous mixture of unbonded cellulose fibers having a solids content of about 25-55% and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, unbonded cellulose fibers and crosslinking agent; a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%; and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers. Intrafiber crosslinked cellulose pulp fibers produced by such methods and/or systems have a chemical on pulp level of about 2-14% and an AFAQ capacity of at least 12.0 g/g.

    Manufacture of cellulosic pulp sheets
    6.
    发明授权
    Manufacture of cellulosic pulp sheets 有权
    纤维素纸浆的制造

    公开(公告)号：US09567710B2

    公开(公告)日：2017-02-14

    申请号：US14453282

    申请日：2014-08-06

    申请人： BASF SE

    发明人： Christian Jehn-Rendu ,  Joachim Hege ,  Detlef Kannengiesser

    IPC分类号： D21H21/10 ,  D21C9/18 ,  D21C9/00 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56

    CPC分类号： D21H21/10 ,  D21C9/002 ,  D21C9/18 ,  D21H17/37 ,  D21H17/375 ,  D21H17/45 ,  D21H17/56

    摘要： A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, i) a copolymer comprising (a) between 1 and 70 mole % (meth) acrylamide and (b) between 30 and 99 mole % (meth) acryloyloxyethyltrimethyl ammonium chloride with an intrinsic viscosity between 5 and 9 dl/g; or ii) a hydrolysed homopolymer of vinylformamide comprising between 1 and 100 mole % vinyl amine units and having a K value of between 45 and 240. The process of the invention provides improved drainage time and solids content of the dewatered pulp.

    摘要翻译： 本发明的方法提供了脱水纸浆的改进的排水时间和固体含量。

    METHOD FOR PRODUCING ULTRAHIGH-VISCOSITY REFINED COTTON AND DEVICE FOR TRANSPORTING REFINED COTTON PULP
    7.
    发明申请
    METHOD FOR PRODUCING ULTRAHIGH-VISCOSITY REFINED COTTON AND DEVICE FOR TRANSPORTING REFINED COTTON PULP 审中-公开
    用于生产超粘度精制棉的方法和用于运输精制棉浆的装置

    公开(公告)号：US20170036868A1

    公开(公告)日：2017-02-09

    申请号：US15298201

    申请日：2016-10-19

    申请人： HUBEI JINHANJIANG REFINED COTTON CO., LTD.

    发明人： Jiagui ZHOU

    IPC分类号： B65G53/08 ,  B65G53/40

    CPC分类号： B65G53/08 ,  B65G53/06 ,  B65G53/40 ,  D21C1/06 ,  D21C3/02 ,  D21C5/00 ,  D21C9/001 ,  D21C9/002 ,  D21C9/004 ,  D21C9/005 ,  D21C9/10 ,  D21C9/12 ,  D21C9/18

    摘要： A device for transporting a refined cotton pulp including: a blower, a material bin, valve plates, a central axis, a motor, and a transporting pipe. The material bin includes a mouth-like upper part and a lower part including a first material outlet. A first material outlet is disposed at the lower part of the material bin and communicates with the transporting pipe. One end of the transporting pipe communicates with the blower, and the other end of the transporting pipe functions as a second material outlet. The valve plates are disposed in the material bin via the central axis. The motor is in transmission connection to the central axis.

    摘要翻译： 一种用于输送精制棉浆的装置，包括鼓风机，料仓，阀板，中心轴，马达和输送管。 料仓包括一个口状的上部和一个包括第一材料出口的下部。 第一材料出口设置在料仓的下部并与输送管连通。 输送管的一端与鼓风机连通，输送管的另一端作为第二材料出口。 阀板通过中心轴线设置在料仓中。 电机与中心轴传动连接。

    METHOD FOR MAKING MODIFIED CELLULOSE PRODUCTS
    9.
    发明申请
    METHOD FOR MAKING MODIFIED CELLULOSE PRODUCTS 审中-公开
    制备改性纤维素产品的方法

    公开(公告)号：US20160289894A1

    公开(公告)日：2016-10-06

    申请号：US15035496

    申请日：2014-12-04

    申请人： UPM-KYMMENE CORPORATION

    发明人： Isko Kajanto ,  Juha Tamper ,  Markus Nuopponen ,  Tarja Sinkko ,  Taisto Tienvieri

    IPC分类号： D21C9/00 ,  D21H11/16 ,  D21C5/00

    CPC分类号： D21C9/002 ,  D21C5/005 ,  D21C9/001 ,  D21C9/007 ,  D21H11/16 ,  D21H11/18

    摘要： Method for making modified cellulose products comprises—processing cellulose pulp to modified cellulose pulp at a manufacturing location to increase the susceptibility of fibers to disintegration,—setting the modified cellulose pulp to a suitable dry matter content, and—transporting the modified cellulose pulp at set dry matter content to a location of use, where the modified cellulose pulp is disintegrated to nanofibrillar cellulose.

    摘要翻译： 制造改性纤维素产品的方法包括在制造地点将纤维素纸浆加工成改性纤维素纸浆，以增加纤维分解的易感性，将改性纤维素纸浆确定为合适的干物质含量， 干物质含量到使用的位置，其中改性的纤维素纸浆被分解成纳米纤丝纤维素。

    Modified fiber, methods, and systems
    10.
    发明授权
    Modified fiber, methods, and systems 有权
    改性纤维，方法和系统

    公开(公告)号：US09458297B2

    公开(公告)日：2016-10-04

    申请号：US14320279

    申请日：2014-06-30

    申请人： WEYERHAEUSER NR COMPANY

    发明人： Charles E. Miller

    IPC分类号： C08J3/24 ,  B01J19/24 ,  D21C9/00

    CPC分类号： D21H11/20 ,  B01J19/2405 ,  B01J2219/24 ,  C08J3/24 ,  C08J3/246 ,  C08J2301/02 ,  C08J2333/02 ,  C08J2433/02 ,  D21C9/00 ,  D21C9/001 ,  D21C9/002 ,  D21C9/005

    摘要： Methods of forming crosslinked cellulose include mixing a crosslinking agent with an aqueous mixture of cellulose fibers containing little to no excess water (e.g., solids content of 25-55%), drying the resulting mixture to 85-100% solids, then curing the dried mixture to crosslink the cellulose fibers. Systems include a mixing unit to form, from an aqueous mixture of unbonded cellulose fibers having a solids content of about 25-55% and a crosslinking agent, a substantially homogenous mixture of non-crosslinked, unbonded cellulose fibers and crosslinking agent; a drying unit to dry the substantially homogenous mixture to a consistency of 85-100%; and a curing unit and to cure the crosslinking agent to form dried and cured crosslinked cellulose fibers. Intrafiber crosslinked cellulose pulp fibers produced by such methods and/or systems have a chemical on pulp level of about 2-14% and an AFAQ capacity of at least 12.0 g/g.

    摘要翻译： 形成交联纤维素的方法包括将交联剂与含有少量至无多余水的纤维素纤维（例如，固体含量为25-55％）的水性混合物混合，将所得混合物干燥至85-100％固体，然后固化干燥 混合物以交联纤维素纤维。 系统包括混合单元，用于从固体含量为约25-55％的无粘合纤维素纤维和交联剂的水性混合物形成混合物，基本均匀的非交联，未结合的纤维素纤维和交联剂的混合物; 干燥单元，将基本均匀的混合物干燥至85-100％的稠度; 和固化单元，并固化交联剂以形成干燥和固化的交联纤维素纤维。 通过这些方法和/或系统生产的纤维间交联的纤维素纸浆纤维具有约2-14％的纸浆水平的化学制品和至少12.0g / g的AFAQ容量。