会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • FÄLLVERFAHREN FÜR VISKOSESCHLÄUCHE
    • 沉淀法制备VISKOSESCHLÄUCHE
    • EP0790776B1
    • 2000-02-02
    • EP95936583.4
    • 1995-11-02
    • Wolff Walsrode Aktiengesellschaft
    • BASFELD, Klaus
    • A22C13/00
    • A22C13/0013
    • A process is disclosed for producing a fibre-reinforced cellulose hose by continuously coating a fibrous nonwoven with an alkaline viscose solution neutralised by an acid-containing precipitating liquid and converted into a regenerated cellulose product. An aqueous, acid-containing precipitating agent is applied on the inside of the fresh viscose hose in the section that extends between the viscose coating station and its immersion into the precipitating bath in order to consolidate and regenerate the regenerated cellulose product. The precipitating liquid starts to be applied as soon as the fibres are embedded in viscose and the precipitating liquid is led with the hose through optionally stationary inner support arrangements that support the hose coated with precipitating liquid and keep its rounded form. The preliminary precipitation section on the inside of the hose is up to 10 meters long, preferably 2 to 6 meters long, in order to achieve an intensive preliminary precipitation. The acid concentration is selected in such a way that the formation of regenerated cellulose product that causes a partial consolidation inside the hose does not prevent aqueous viscose to be uniformly distributed on the outside of the hose nor the fibres to be embedded.