A METHOD OF PRODUCING MICROFIBRILLATED CELLULOSE
    25.
    发明公开
    A METHOD OF PRODUCING MICROFIBRILLATED CELLULOSE 有权
    一种生产微纤化纤维素的方法

    公开(公告)号:EP2941442A1

    公开(公告)日:2015-11-11

    申请号:EP13870221.2

    申请日:2013-12-30

    Applicant: Stora Enso Oyj

    Abstract: The invention relates to methods of producing microfibrillated cellulose (MFC). According to the invention a fibrous pulp suspension is fibrillated mechanically at a consistency of less than 12.5 %, dewatered to raise the consistency of the fibrillated suspension to at least 12.5 %, and then subjected in the dewatered condition to further fibrillation. Alternatively an initially fibrillated fibrous pulp suspension may be dewatered and fibrillated in the dewatered condition, after which these dewatering and fibrillating steps are repeated one or more times so that pulp consistency is increased for each fibrillation step. The goals of raising the consistency between subsequent fibrillations are energy saving and an increased aspect ratio in MFC. The invention even comprises uses of the MFC product, e.g. as an additive for papermaking furnish or injection molded plastic composites.

    Abstract translation: 本发明涉及生产微纤化纤维素(MFC)的方法。 根据本发明,纤维纸浆悬浮液以小于12.5%的稠度机械原纤化,脱水以将原纤化悬浮液的稠度提高到至少12.5%,然后在脱水条件下进行进一步原纤化。 或者,最初原纤化的纤维纸浆悬浮液可以在脱水条件下脱水并原纤化,然后重复这些脱水和原纤化步骤一次或多次,以便每个原纤化步骤的纸浆稠度增加。 提高后续原纤维之间一致性的目标是节约能源并提高MFC的纵横比。 本发明甚至包括MFC产品的使用,例如, 作为造纸配料或注塑塑料复合材料的添加剂。

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