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1. 发明申请

WO2017200452A1 A WET-FORMED SOLID POROUS BODY, A PROCESS FOR CONTROLLING STRUCTURAL AND MECHANICAL PROPERTIES IN THE MANUFACTURE OF A SOLID POROUS BODY AND PAPER MANUFACTURE, AND A METHOD OF WET-FORMING THE SOLID POROUS BODY 审中-公开
标题翻译：湿固体多孔体，制造固体多孔体和纸制造物时控制结构和机械性能的方法以及湿固体多孔体的方法
公开(公告)号：WO2017200452A1
公开(公告)日：2017-11-23
申请号：PCT/SE2017/050291
申请日：2017-03-27
申请人： SWEDISH WOODFIBRE BOARDS AB
发明人： MOLTEBERG, Dag , JENSSEN, Gudmund , AXELSSON, Johan Patrik , STENSLÖKKEN, Joar Helge , BAJER, Per Thomas Gunnar , DAHLSTRÖM, Lars
IPC分类号： D21H11/08 , D21J1/00 , D21B1/04 , D21H15/02
CPC分类号： D21H11/08 , D21D1/20 , D21D5/02 , D21H15/02 , D21J1/00 , D21J7/00
摘要： A method of wet forming a solid porous body that is substantially lighter than conventionally produced similar products but has comparable strength/stiffness and is based on fibrous material from softwood including fractions of fibers separated from one another in a mechanical pulping process comprises: a) providing a draining device having a wire-net bottom; b) fractionating the separated fibers to obtain – a fiber fraction having a weighted average fiber length of from 0.7 to 1.8 mm and a weighted average fiber width of from 25 to 42 μm, and – a fines fraction of particles having a weighted average length of less than 0.2 mm and constituting from 8 to 40 percent by weight of said fibrous material; c) mixing said fractions and preparing a stock from the mixture; d) furnishing the stock to the draining device; e) draining water from the stock on the draining device to form a stabilized solid porous body; and 15 f) drying the stabilized solid porous body to produce a hydrogen bonded solid porous body free from added non-cellulose based binders. Further, a process for controlling the structural and mechanical properties by using combined fiber selection strategy in the manufacture of a solid porous body and paper manufacture comprises: – selecting a suitable wood raw material; – defibering the wood raw material in a mechanical pulping process to get free fibers separated from one another; – selecting a degree of treatment of the wood raw material by controlling an amount of energy supplied to the mechanical pulping process; – exposing the free fibers to a mechanical after-treatment in at least one refiner; – fractionating the obtained pulp by means of screens or hydrocyclones to get fiber fractions useful in the manufacture of a solid porous body and paper manufacture; and – selecting at least one fiber fraction suitable for manufacturing of a solid porous body.
摘要翻译：一种湿法成形固体多孔体的方法，其比常规生产的类似产品轻得多，但具有可比较的强度/刚度，并且基于来自软木的纤维材料，包括在机械制浆过程包括：a）提供具有丝网底部的排水装置; b）分离分离的纤维以获得 - 加权平均纤维长度为0.7-1.8mm且加权平均纤维宽度为25-42μm的纤维组分，和 - 加权平均长度为小于0.2mm并占所述纤维材料的8-40重量％; c）混合所述级分并从混合物制备原料; d）将所述原料提供给所述排水装置; e）从排水装置上的原料排出水以形成稳定的固体多孔体; f）干燥稳定化的固体多孔体以产生不含添加的非纤维素基粘合剂的氢键合固体多孔体。此外，通过在制造固体多孔体和造纸中使用组合纤维选择策略来控制结构和机械性能的方法包括： - 选择合适的木材原材料; - 在机械制浆过程中对木质原材料进行去纤维处理以使游离纤维彼此分离; - 通过控制提供给机械制浆工艺的能量的量来选择木材原料的处理程度; - 将游离纤维在至少一个磨浆机中进行机械后处理; - 通过筛网或水力旋流器将获得的纸浆分级以获得可用于制造固体多孔体和造纸的纤维馏分; 和 - 选择至少一种适用于制造固体多孔体的纤维部分。

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