| 摘要 |
PURPOSE:To carry out the dismantling of a spinning pack, efficiently and ration ally, by extruding the most part of the extrudable materials such as polymers and filtering materials from the spinning pack under hot state, and dismantling and cleaning the pack. CONSTITUTION:The used spinning pack 1 is placed in a heating furnace facing the spinneret face 2 upward, and maintained in the atmosphere heated at 3004n350 deg.C. the extrudable materials 3 are dripped down from the polymer- feeding port 4 of the pack. When about 85-90% of the sum of the polymer and the filtering material are discharged, the remaining polymer is burnt to the highly oxidized state. The dismantling of the pack can be carried out easily, and the dismantled pack can be transferred directly to the salt-decomposition step.
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