发明名称 |
DEVICE AND METHOD FOR PRODUCING CELLULOSE TUBULAR FILMS |
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. |
申请公布号 |
WO9842492(A3) |
申请公布日期 |
1999.01.21 |
申请号 |
WO1998AT00074 |
申请日期 |
1998.03.20 |
申请人 |
LENZING AKTIENGESELLSCHAFT;SCHLOSSNIKL, CHRISTIAN;GSPALTL, PETER;KOFLER, ALOIS |
发明人 |
SCHLOSSNIKL, CHRISTIAN;GSPALTL, PETER;KOFLER, ALOIS |
分类号 |
B29C47/20;B29C35/16;B29C47/00;B29C47/88;B29C55/22;B29C55/28;B29K1/00;B29L7/00;B29L23/00 |
主分类号 |
B29C47/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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