公开(公告)号：US06197230B1

公开(公告)日：2001-03-06

申请号：US08981025

申请日：1998-08-12

申请人： Michel Pierre ,  Nathalie Brunet ,  Patrick Navard

发明人： Michel Pierre ,  Nathalie Brunet ,  Patrick Navard

IPC分类号： D01F200

CPC分类号： D04H3/013 ,  D01D5/11 ,  D01F2/00 ,  D01F2/06 ,  D04H3/16

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。