发明名称 |
Process for production of continuous inorganic fibers and apparatus therefor |
摘要 |
A process for the production of continuous inorganic fibers is disclosed which comprises causing a spinning dope composed of a water-soluble organic polymer, a water-soluble inorganic salt capable of forming a refractory inorganic oxide, additives, and water and adjusted to a viscosity of 200 to 2000 poises at 20 DEG C. to be dry spun by the use of a spinning nozzle containing a plurality of spinnerets each provided on the spinning dope outlet side of a nozzle plate with a protuberance having a wall thickness of not more than 0.5 mm at the tip thereof and subjecting the spun threads of the spinning dope to a thermal treatment. An apparatus for working the process is also disclosed which is provided with a spinning nozzle having a plurality of spinnerets bored through a nozzle plate and severally through protuberances formed on the spinning dope outlet side of the nozzle plate in such a manner that the walls of the protuberances surrounding the spinnerets have a thickness of not more than 0.5 mm at the tips of the protuberances and the spinnerets so piercing the protuberances are radially constricted on the spinning dope outlet side.
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申请公布号 |
US4724109(A) |
申请公布日期 |
1988.02.09 |
申请号 |
US19860814597 |
申请日期 |
1986.01.02 |
申请人 |
DENKI KAGAKU KOGYO KABUSHIKI KAISHA;NITIVY CO., LTD. |
发明人 |
YAMASHITA, MITSUO;SHIRASAKA, AKIHISA;NAGASHIMA, ICHIRO;ISOGAI, KATUNOSIN |
分类号 |
D01F9/10;C04B35/622;D01D4/02;D01F9/08;(IPC1-7):D01D5/04 |
主分类号 |
D01F9/10 |
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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