SURFACE ENHANCED PULP FIBERS AT A SUBSTRATE SURFACE

    公开(公告)号:US20230035105A1

    公开(公告)日:2023-02-02

    申请号:US17967359

    申请日:2022-10-17

    摘要: A paper product having improved printing characteristics and a method of making the paper product. This paper product has a fibrous substrate and top layer of surface enhanced pulp fibers that is integrally coupled to the top surface of the fibrous substrate. The paper product is produced by providing an aqueous slurry formed from a blend of cellulosic fibers and water and at least partially dewatering the aqueous slurry of cellulosic fibers and water to form the fibrous substrate. Subsequently, a surface treatment formed from an aqueous composition of water and surface enhanced pulp fibers is applied to the top surface of the fibrous substrate and thereafter the treated fibrous substrate is dried to form a paper product having enhanced printing characteristics.

    Methods for the manufacture of cellulose nanocrystals
    4.
    发明授权
    Methods for the manufacture of cellulose nanocrystals 有权
    纤维素纳米晶体的制造方法

    公开(公告)号:US09297111B1

    公开(公告)日:2016-03-29

    申请号:US14208759

    申请日:2014-03-13

    摘要: Embodiments of the present invention relates generally to methods and systems for the manufacture of cellulose nanocrystals. In one embodiment, a method for manufacturing cellulose nanocrystals comprises reacting lignocellulosic fibers with sulfuric acid in water, introducing a water-insoluble solvent to substantially terminate the reaction, separating a first stream comprising at least 70% of the unreacted sulfuric acid in the water-insoluble solvent from a second stream comprising a plurality of cellulose nanocrystals and the remainder of the unreacted sulfuric acid in water, and separating the cellulose nanocrystals from the second stream.

    摘要翻译: 本发明的实施方案一般涉及用于制造纤维素纳米晶体的方法和系统。 在一个实施方案中,制备纤维素纳米晶体的方法包括使木质纤维素纤维与硫酸在水中反应,引入水不溶性溶剂以基本上终止反应,将含有至少70%的未反应的硫酸的第一物流在水 - 来自包含多个纤维素纳米晶体的第二流的不溶性溶剂和在水中的其余未反应的硫酸,并将纤维素纳米晶体与第二流分离。

    Surface enhanced pulp fibers in fiber cement

    公开(公告)号:US10710930B2

    公开(公告)日:2020-07-14

    申请号:US15120221

    申请日:2015-02-20

    摘要: The present invention relates to a method of making a fiber-reinforced cementitious composite material which finds widespread applicability in a variety of construction and related applications. The composite comprises cellulosic fibrous material in order to provide the composite with the desired performance characteristics. Notably, at least a portion of the cellulosic fibrous material comprises surfaced enhanced pulp fiber, which desirably enhances the processing characteristics of the material, as well enhancing the characteristics of the finished composite product. The method of making a fiber-reinforced cementitious composite comprising the steps of providing a cementitious composition, and providing cellulosic fibrous material. The present method further includes blending the cementitious composition and the cellulosic fibrous material to form the cementitious composite. The surface enhanced pulp fiber preferably comprises approximately 1-10%, by weight, of the cellulosic fibrous material, and the cellulosic fibrous material exhibits an enhanced Bauer-McNett long fiber fraction. The cellulosic fibrous material preferably exhibits at least a 10% increase in length-weighted average fiber length (LWAFL), in comparison to a cellulosic fibrous material which is devoid of surface enhanced pulp fiber. The cellulosic fibrous material requires relatively reduced refining energy, in comparison to a cellulosic fibrous material which is devoid of surface enhanced pulp fiber, to reach a predetermined freeness CSF (Canadian Standard Freeness) value.