公开(公告)号：US20220290373A1

公开(公告)日：2022-09-15

申请号：US17636278

申请日：2020-09-04

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Ayaka Hasegawa ,  Moe Fuchise

IPC分类号： D21H15/12 ,  D21H17/66 ,  D21H17/70

摘要： The present invention aims to provide complex fibers comprising a cellulose fiber strongly covered by a lot of inorganic particles on its surface. In the present invention, an excellent complex fiber of a cellulose fiber with inorganic particles can be prepared on the basis of the value of (D50−D10)/D50 calculated from the particle size distribution of (a) or (b) below: (a) the filtrate obtained by filtering an aqueous suspension of the complex fiber at a solids content of 0.1% through a 60-mesh sieve (having an opening of 250 μm); or (b) the fraction corresponding to an effluent volume (L) of 18.51 to 19.50 and an efflux time (sec) of 37.4 to 48.0 when an aqueous suspension of the complex fiber at a solids content of 0.3% is classified using a fiber classification analyzer under the conditions of a flow rate of 5.7 L/min, a water temperature of 25±1° C., and a total effluent volume of 22 L.

公开(公告)号：US11186952B2

公开(公告)日：2021-11-30

申请号：US16485755

申请日：2018-02-09

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Masatoshi Oishi ,  Naoyuki Sugawara ,  Shisei Goto

IPC分类号： D21H15/10 ,  A61L9/01 ,  D21H11/04 ,  D21H11/20 ,  D21H17/70 ,  D21H21/52 ,  D21H27/00

摘要： A composition in accordance with an aspect of the present invention includes: composite fibers composed of inorganic particles and fibers; and at least one of (i) different-type inorganic particles which are different in type from the inorganic particles, (ii) different-type fibers which are different in type from the fibers, and (iii) organic particles.

公开(公告)号：US11053133B2

公开(公告)日：2021-07-06

申请号：US15757731

申请日：2016-09-08

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Moe Fukuoka ,  Toru Nakatani ,  Shisei Goto

IPC分类号： C01F5/24 ,  D06M11/76 ,  D21H17/00 ,  B01J19/26 ,  B01J19/10 ,  D21H17/67 ,  B01J19/00 ,  D21H17/70 ,  D06M23/06 ,  D06M101/02

摘要： The present invention aims to provide techniques for preparing complexes of magnesium carbonate particles and a fiber. The complexes of magnesium carbonate microparticles and a fiber can be synthesized efficiently by synthesizing the magnesium carbonate in a solution containing the fiber.

公开(公告)号：US11015295B1

公开(公告)日：2021-05-25

申请号：US16681147

申请日：2019-11-12

申请人： John H. Klungness

发明人： John H. Klungness

IPC分类号： D21H23/04 ,  D21D1/20 ,  D21H17/67 ,  D21H17/70 ,  D21F7/00 ,  D21F3/02 ,  D21H15/02

摘要： A method of making paper is described. The method includes providing a cellulosic fibrous material, the cellulosic fibrous material comprising a plurality of elongated fibers having a fiber wall surrounding a hollow interior, the fibrous material having moisture content. The method also includes adding calcium bicarbonate solution to the cellulosic fibrous material to form a pulp mixture, the calcium bicarbonate solution containing up to the saturation level of about 16% solids of calcium bicarbonate, the resulting pulp mixture having between 0.1% to 65% total solids by weight. Further, the method includes refining the pulp mixture such that at least some of the calcium ions become associated with the reactive sites in the fiber walls. Further still, the method includes forming a web from the pulp mixture and wet pressing the web.

公开(公告)号：US20210102341A1

公开(公告)日：2021-04-08

申请号：US16608810

申请日：2018-04-17

申请人： NIPPON PAPER INDUSTRIES CO., LTD.

发明人： Moe FUKUOKA ,  Shisei GOTO

IPC分类号： D21H17/70 ,  D21H13/08 ,  D21H13/24 ,  D21H13/14 ,  D21H21/16 ,  D06M11/56 ,  D06C17/04

摘要： A method of producing inorganic-particle-combined fiber includes: a beating step including beating chemical fiber in a wet manner or a dry manner; and a composite fiber forming step including forming inorganic-particle-combined fiber which is composite fiber composed of the chemical fiber and inorganic particles, the composite fiber forming step including synthesizing the inorganic particles in a slurry that contains the chemical fiber after the beating step.

公开(公告)号：US10927503B2

公开(公告)日：2021-02-23

申请号：US16345348

申请日：2017-10-27

申请人： Stora Enso OYJ

发明人： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC分类号： D21H11/18 ,  D21H21/06 ,  D21H23/04 ,  D21H17/03 ,  D21H17/70 ,  D21H23/02 ,  D21H17/20

摘要： The invention discloses a method to enable the efficient use of surfactants in web forming of a cellulose containing material, e.g. in the making of paper or paperboard. The method comprises the addition of microfibrillated cellulose (MFC) or nanocrystalline cellulose (NCC) to the white water in a web-forming process in order to form complexes with surface active agents. The formed complexes are at least partly recycled to the process. This enables the producer to have control over the concentration of surface active agents in the system.

公开(公告)号：US10513828B2

公开(公告)日：2019-12-24

申请号：US15638823

申请日：2017-06-30

申请人： Kemira Chemie Ges.mbH

发明人： Leo Schmid ,  Jürgen Sartori

IPC分类号： D21H21/16 ,  D21H17/15 ,  D21H17/28 ,  D21H17/36 ,  D21H17/16 ,  D21H17/18 ,  D21H17/70 ,  D21H21/24

摘要： A composition for sizing paper includes alkenylsuccinic anhydride (ASA) as the sizing agent and an emulsifier system of anionic emulsifiers and nonionic components, wherein the anionic emulsifiers are chosen from alkali metal salts of aliphatic carboxylic acids or aliphatic dicarboxylic acids and the nonionic components are chosen from polyethylene glycols.

公开(公告)号：US09708772B2

公开(公告)日：2017-07-18

申请号：US14786124

申请日：2014-04-25

申请人： WETEND TECHNOLOGIES OY ,  STORA ENSO OYJ

发明人： Isto Heiskanen ,  Olavi Imppola ,  Jouni Matula ,  Jussi Matula ,  Jari Rasanen ,  Karri Tahkola ,  Matti Vakevainen

IPC分类号： D21H21/18 ,  D21H17/63 ,  D21H17/70 ,  D21H17/67 ,  D21H17/00 ,  D21H21/10 ,  D21H23/04 ,  C01F11/18 ,  D21H17/37

CPC分类号： D21H21/18 ,  C01F11/181 ,  C01F11/182 ,  C01P2004/03 ,  C01P2004/62 ,  D21H17/375 ,  D21H17/63 ,  D21H17/675 ,  D21H17/70 ,  D21H17/73 ,  D21H17/74 ,  D21H21/10 ,  D21H23/04

摘要： The present invention relates to a method of producing precipitated calcium carbonate (PCC) where a retention/strength enhancing chemical is added to milk of lime to form a mixture thereof prior to adding the mixture of the retention/strength enhancing chemical and milk of lime to paper making stock in a pipeline leading to a headbox of a paper making machine, whereafter carbon dioxide is introduced to the paper making stock, and the carbonation reaction between milk of lime and carbon dioxide is allowed to proceed in the presence of both fibers and the retention/strength enhancing chemical.

公开(公告)号：US20170067208A1

公开(公告)日：2017-03-09

申请号：US15309286

申请日：2015-05-06

申请人： STORA ENSO OYJ

发明人： Kaj Backfolk

IPC分类号： D21H13/12 ,  D21H13/14 ,  D21H17/37 ,  D21H17/35 ,  D21H17/53 ,  D21H17/28 ,  D21H17/70 ,  D21H13/24

CPC分类号： D21H13/12 ,  D21H13/14 ,  D21H13/24 ,  D21H17/28 ,  D21H17/35 ,  D21H17/37 ,  D21H17/53 ,  D21H17/675 ,  D21H17/70 ,  D21H17/71

摘要： A method for forming a thermoplastic composite material in a papermaking machine, wherein the method comprises the steps of: forming an aqueous fiber material suspension; bringing said fiber suspension in contact with at least one additive, said additive being introduced into said fiber suspension, whereby said additive reacts to form a precipitation product onto or into the fibers, thereby forming an intermediate suspension, introducing, after the formation of the intermediate suspension, a plastic material into said intermediate suspension, thereby forming a plastic fiber composite suspension.

摘要翻译： 一种在造纸机中形成热塑性复合材料的方法，其中所述方法包括以下步骤：形成水性纤维材料悬浮液; 使所述纤维悬浮液与至少一种添加剂接触，所述添加剂被引入所述纤维悬浮液中，由此所述添加剂反应以在纤维上或纤维中形成沉淀产物，从而形成中间体悬浮液，在中间体形成之后引入 将塑料材料悬浮在所述中间体悬浮液中，从而形成塑料纤维复合悬浮液。

公开(公告)号：US20160186382A1

公开(公告)日：2016-06-30

申请号：US14890028

申请日：2014-05-05

申请人： ELASTOPOLI OY

发明人： Markku Nikkilä ,  Timo Ture

IPC分类号： D21H21/06 ,  D21H17/33 ,  D21F5/00 ,  D21H13/10 ,  D21H17/70

摘要： A method and an apparatus for manufacturing composite material including natural fiber substance, plastic based substance, and agent improving compatibility between the natural fiber substance and the plastic based substance. The substances are mixed together and mechanically pressing and/or dried with heat to remove liquid. A wet mixture with 41-99.8% water is formed at least from the natural fiber substance, the plastic based substance and the compatibility improving agent, whereby to manufacture the composite material having an internal network structure that keeps material together by chemical bonds between the plastic based substance and the natural fiber substance, the wet mixture is fed to a devolatilization process in which substance in liquid form and other gasifying volatile substances or at least a main part thereof are removed by changes in pressure, heat and mechanical mixing, and the structure of the natural fiber substance is modified if needed.

摘要翻译： 一种制造复合材料的方法和装置，包括天然纤维物质，塑料基物质和提高天然纤维物质与塑料基物质之间的相容性的试剂。 将这些物质混合在一起并用机械压力和/或干燥以除去液体。 至少从天然纤维物质，塑料基物质和相容性改善剂形成具有41-99.8％水的湿混合物，由此制造具有通过塑料之间的化学键将材料保持在一起的内部网状结构的复合材料 将湿混合物供给到脱挥发分过程中，其中通过压力，热和机械混合的变化除去液体形式的物质和其它气化挥发性物质或其至少主要部分，并且结构 的天然纤维物质被修饰。