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    • 51. 发明申请
    • METHOD AND DEVICE FOR THE PRODUCTION OF CELLULOSE FIBRES AND CELLULOSE FILAMENT YARNS
    • 方法和设备用于生产纤维素纤维和CELLULOSEFILAMENTGARNEN
    • WO01068958A1
    • 2001-09-20
    • PCT/DE2001/000901
    • 2001-03-06
    • D01D5/04D01F2/00D01D5/06
    • D01F2/00D01D5/04
    • The invention relates to a method for the production of cellulose fibres or filaments from cell material, by the dry-wet extrusion method with aqueous amine oxides, in particular, N-methylmorpholine-N-oxide as solvent, comprising the following steps: a) dispersion of a cell material, or a cell material mixture with a cuoxam DP of from 250 to 3000, in aqueous amine oxide, b) transformation of the obtained dispersion, by water evaporation with shear, at elevated temperature, into a homogeneous solution with a zero shear viscosity of 600 to 6000 Pa•s and a relaxation time of 0.3 to 50 secs all at 85 DEG C, c) feeding the solution to a spinning jet, previous to which it is passed through a flow chamber prior to the jet(s), in which the retention time is at least equal to the relaxation time at the spinning temperature, d) forming the solution into at least one capillary in each spinning jet, drawing the capillary(ies) from each jet through a non-precipitating medium and then precipitating the cellulose fibres on drawing through a precipitating bath and e) at the end of the precipitating bath section drawing off the fibres by deflecting the precipitation flow. The invention is characterised in that in stage d) the capillary bundle(s) are treated with a gas flow, just before the entry thereof into the precipitating bath, at an angle alpha to the capillary flow, where 45 DEG
    • 一种用于通过用含水氧化胺,特别是N-甲基吗啉-N-氧化物作为溶剂的干 - 湿挤出工艺制备纤维素纤维或长丝由纸浆,方法,其中:a)纤维素或在250的范围内为与铜铵DP纤维素混合物 3000分散在含水氧化胺,b)中在升高的温度下的水去除和剪切所得分散液与在范围600的零剪切粘度均匀的溶液至6000帕•S和具有在0.3至50秒的范围内的松弛时间, 每个在85℃下,转移,c)中供给溶液到至少一个喷丝头和d)之前,将溶液通过一个或喷嘴(多个)公共流入室中,其中它的停留时间是在纺丝温度至少等于其弛豫时间,在 每一喷丝板变形以至少一个毛细管,并且每个喷嘴的下一个非默认通过沉淀毛细管(毛细管) 介质和随后导致通过沉淀浴以沉淀纤维素线程,以及e)分离至少沉淀浴由Fällströmen的偏转端部的纤维素纤维和纱线抽出,其特征在于前不久在步骤d)中Kapillarenschar(S) 其进入凝固浴气体以Kapillarenlaufrichtungα的范围内的45°<阿尔法以一定角度对<90°流动。