Process for producing cellulosic tubular films
    2.
    发明申请
    Process for producing cellulosic tubular films 审中-公开
    纤维素管状薄膜的制造方法

    公开(公告)号:US20020167110A1

    公开(公告)日:2002-11-14

    申请号:US10185361

    申请日:2002-06-27

    IPC分类号: D01F002/00

    摘要: The invention relates to a device for the production of cellulosic tubular films by extruding a solution of cellulose in an aqueous tertiary amine oxide into a precipitant present below the device, which device comprises an extrusion die having a substantially annular extrusion gap, wherein a supply duct for precipitant and a discharge duct for used precipitant are provided in the interior of the ring formed by the extrusion gap, characterized in that the supply duct (3) for the precipitant terminates below the discharge duct (4) for the used precipitant.

    摘要翻译: 本发明涉及一种用于生产纤维素管状薄膜的装置,该装置通过将纤维素在叔胺氧化胺水溶液中的溶液挤出到装置下方的沉淀剂中,该装置包括具有大致环形的挤出间隙的挤出模头, 在由挤出间隙形成的环的内部设置有沉淀剂和用于使用的沉淀剂的排出管,其特征在于,用于沉淀剂的供给管道(3)终止于用于所使用的沉淀剂的排出管道(4)的下方。

    Process and device for the production of cellulosic moulded bodies
    3.
    发明申请
    Process and device for the production of cellulosic moulded bodies 失效
    用于生产纤维素成型体的方法和装置

    公开(公告)号:US20020046799A1

    公开(公告)日:2002-04-25

    申请号:US09768324

    申请日:2001-01-24

    IPC分类号: F16G001/00

    摘要: The invention relates to a process for the production of a spunlaid fabric containing solvent-spun cellulosic fibres. The process is characterised in that a solution of cellulose in an aqueous tertiary amine oxide is extruded through a spinneret (1) with orifices and the extruded filaments (3) are stretched in an air gap and led into a precipitation bath (2), the filaments in the precipitation bath (2) are intercepted by a first conveyor device (5) whereby a curtain of threads of filaments basically arranged parallel to each other and basically of constant thickness is formed on the first conveyor device (5), the curtain of threads is transported by means of the first conveyor device (5) out of the precipitation bath (2) onto a second conveyor device inclined downwards (8), and the curtain of threads is transported downwards on the second conveyor device (8) onto a third conveyor device (10), where the third conveyor device (10) draws off the curtain of threads at a speed less than the speed of the curtain of threads transported downwards on the second conveyor device.

    摘要翻译: 本发明涉及一种生产含纺丝纤维素纤维的纺丝织物的方法。 该方法的特征在于,纤维素在叔胺氧化胺水溶液中的溶液通过具有孔的喷丝头(1)挤出,并将挤出的长丝(3)在气隙中拉伸并导入沉淀浴(2), 沉淀浴(2)中的细丝被第一输送装置(5)截取,由此在第一输送装置(5)上形成基本上彼此平行布置并基本上具有恒定厚度的细丝丝线帘线 螺纹通过第一输送装置(5)从沉淀槽(2)输送到向下倾斜的第二输送装置(8)上,并且纱线帘在第二输送装置(8)上向下传送到 第三输送装置(10),其中第三输送装置(10)以小于在第二输送装置上向下传送的螺纹帘的速度的速度抽出螺纹帘。

    Process for the production of cellulosic flat films
    4.
    发明申请
    Process for the production of cellulosic flat films 失效
    生产纤维素平片的方法

    公开(公告)号:US20020045038A1

    公开(公告)日:2002-04-18

    申请号:US09839908

    申请日:2001-04-20

    IPC分类号: C08L001/02 B29C047/90

    摘要: The invention relates to a process for the production of cellulosic flat films whereby a solution of cellulose is extruded in an aqueous tertiary amine oxide by means of an extrusion die which has an extrusion gap whereby the solution is moulded in the shape of a film and the extruded solution is led via an air gap to a precipitation bath. The process in accordance with the invention is characterised in that an extrusion die is used which has an extrusion gap b of 220 nullmnullbnull280 nullm. Moreover, the invention relates to flat films, obtainable by the amine oxide process with a thickness d of less than 20 nullm, a width B of more than 30 cm, and a factor f of 65 or less, whereby f is defined as fnulld*(MD/TD), d is used in nullm and whereby MD stands for the tenacity of the film in the longitudinal direction (N/mm2) and TD for the tenacity of the film in the transverse direction (N/mm2).

    摘要翻译: 本发明涉及一种生产纤维素平膜的方法,其中纤维素溶液通过挤出模具挤出在叔胺氧化物水溶液中,该挤出模具具有挤出间隙,由此将溶液模塑成薄膜形状, 挤出溶液通过气隙引导至沉淀浴。 根据本发明的方法的特征在于使用具有220μm(b =280μm)的挤出间隙b的挤出模头。 此外,本发明涉及通过厚度d小于20μm,宽度B大于30cm,因子f为65以下的氧化胺工艺获得的平膜,其中f定义为f = d *(MD / TD),d用于母体,其中MD表示膜在纵向(N / mm2)上的强度,TD表示膜在横向上的强度(N / mm2)。