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发明公开
CN106319657A 一种PA66未拉伸丝的卷绕工艺 无效 - 驳回

一种PA66未拉伸丝的卷绕工艺
摘要：
本发明提供一种PA66 未拉伸丝的卷绕工艺，所述卷绕工艺，包括卷绕和卷绕前处理；所述卷绕，油剂的浓度为13.6-14.3%。本发明制得的PA66未拉伸丝，纤度为230±10dtex；本发明制得的PA66未拉伸丝，断裂强力为400-450cN，强力CV为5.3-8%，断裂伸长率为260-300%，断裂伸长率CV为5.5-8%；耐热性指标（240℃，4分钟）：断裂强力为330-394cN，降低12.4-17%；断裂伸长为210-262%，降低12.5-19%；本发明制得的PA66未拉伸丝，指标稳定，纤度均匀，后道工序退绕良好，满足弹力纬纱纱芯质量要求，纤度不匀率为1.85-2.7%。
摘要（英）：

The invention provides a PA66 undrawn yarn winding process, which comprises winding and winding pretreatment, wherein during winding, the concentration of an oil agent is 13.6 to 14.3 percent. The prepared PA66 undrawn yarn is characterized in that the fiber number is 230+/-10dtex; the breaking strength of the prepared PA66 undrawn yarn is 400 to 450cN; the strength CV is 5.3 to 8 percent; the elongation at break is 260 to 300 percent; the elongation CV at break is 5.5 to 8 percent; the heat resistance index (four minutes at 240 DEG C) is shown as follows: when the breaking strength is 330 to 394cN, the heat resistance index is redued by 12.4 to 17 percent, and when the breaking elongation is 210 to 262 percent, the heat resistance index is reduced by 12.5 to 19 percent. The prepared PA66 undrawn yarn has the advantages that the indexes are stable; the fiber number is uniform; the unwinding of the subsequent work procedure is good; the yarn core quality requirement of the elastic weft yarn is met; the fiber number unevenness rate is 1.85 to 2.7 percent.

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