Process for the preparation of a mixture of cellulosic fibers and microfibers
    1.
    发明授权
    Process for the preparation of a mixture of cellulosic fibers and microfibers 有权
    制备纤维素纤维和微纤维混合物的方法

    公开(公告)号:US06197230B1

    公开(公告)日:2001-03-06

    申请号:US08981025

    申请日:1998-08-12

    IPC分类号: D01F200

    摘要: The present invention relates to a process for the preparation of a mixture of cellulosic fibers and microfibers. Said process comprises: the preparation of a cellulosic solution (C); the extrusion of said solution (C) through the hole or holes of a die (1); the disintegration of said solution (C) when it comes out of said hole or holes by projecting a liquid or gas fluid (F) in a direction making an angle lower than or equal to 75 degrees with the axis of said die (1); said fluid (F) being neutral or appropriate to regenerate or precipitate, only partially, the cellulose; the reception in a cellulose regeneration or precipitation bath, of the dispersion generated at the disintegration step; the recovery of the mixture of fibers and microfibers, more or less bonded, obtained in said bath. Said process provides for the preparation of mixtures rich in microfibers (with a fineness lower than 1 dtex, particularly between 0.5 and 0.3 dtex). It also provides for the continuous preparation of nonwoven materials.

    摘要翻译: 本发明涉及一种制备纤维素纤维和微纤维混合物的方法。 所述方法包括:制备纤维素溶液(C);通过模具(1)的孔或孔挤出所述溶液(C);当所述溶液(C)从所述孔中出来时,所述溶液(C)的分解 在与所述模具(1)的轴线成小于或等于75度的方向上投射液体或气体流体(F)的孔; 所述流体(F)是中性的或适合的,以仅部分地再生或沉淀纤维素;在纤维素再生或沉淀浴中接收在分解步骤中产生的分散体;纤维和微纤维混合物的回收更多 或更少粘合。 所述方法提供了制备富含微纤维的混合物(细度低于1分特,特别是在0.5和0.3分特之间)。 它还提供无纺材料的连续制备。