条混工艺参数对混合效果的影响

doi:10.13475/j.fzxb.20211101008

摘要/Abstract

摘要：

不同组分纤维在纱线内混合不匀会导致混纺纱的强度降低、强力不匀恶化、布面色差等瑕疵增加。为探究条混工艺参数对混纺纱条混合均匀度的影响,通过改进混合不匀指数(IBI)表征混合均匀度,并采用计算模拟纤维在条混时的运动情况,获取混合纱条中纤维的分布规律。讨论了不同并合根数、并合道数、排列方式、混纺比等条混工艺参数对纱条混合均匀度的影响,最后进行条混实验验证。结果表明:改进的混合不匀指数能更准确地表征混纺纱条的混合均匀度;并合道数以及并合根数越多,越能有效地降低混合不匀指数;不同组分的纱条间隔排列、混纺比越接近50∶50、纱条定量越小,则纤维越易在纱条中混合均匀;牵伸倍数与罗拉隔距对混合效果没有显著影响。条混实验验证与模拟结果具有很好的一致性。

关键词: 条混, 工艺参数, 混合均匀度, 混合不匀指数, 计算机模拟

Abstract:

Poor blending uniformity of different component fibers in yarn leads to the decrease in strength, the deterioration of the strength unevenness, and the increase of the chromatic aberration of the fabric. In order to explore the influence of sliver blending process parameters on the blending uniformity, the index of irregularity blending (IBI) was improved to characterize the blending uniformity, and the simulation of the movement of fibers during sliver blending process was analyzed to obtain the distribution regularity of fibers in the mixed sliver. In this study, the influence of different sliver mixing process parameters such as the number of combined slivers, the passages of slivers, arrangement mode, and blending ratio, on the uniformity of yarn sliver mixing was discussed, and the results were verified by experiments. The research results show that the improved IBI can evaluate more accurately the uniformity of blended slivers. The more the number of drawn passages and the number of combined slivers, the more uniform is the blending; the smaller the linear density of feeding sliver, the easier it is to carry out uniform blending. The IBI becomes less while the feeding sliver arranged at intervals and blending ratio of component close to 50∶50. The draft ratio and the distance of roller center do not show obvious effect on the IBI. The simulation results are in good agreement with the tested results.

Key words: sliver blending, process parameter, blending uniformity, index of blending irregularity, simulation

中图分类号:

TS104.5

曹巧丽, 李豪, 钱丽莉, 郁崇文. 条混工艺参数对混合效果的影响[J]. 纺织学报, 2022, 43(02): 81-88.

CAO Qiaoli, LI Hao, QIAN Lili, YU Chongwen. Effect of sliver blending parameters on blending irregularity of article blended yarn[J]. Journal of Textile Research, 2022, 43(02): 81-88.

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纤维颜色	纱条定量/ (g·(10 m)^-1)	平均截面根数	纱条半径/ mm	纤维平均线密度/tex	纤维平均长度/ mm
白色(W)	7.30	1 094	6	0.667	75
黑色(B)	7.08	1 061	6	0.667	75

样品编号	每道并合根数n (B涤纶条数+ W涤纶条数)	混纺比 B涤纶条含量(%)/ W涤纶条含量(%)	头道并条喂入的颜色排列方式	牵伸倍数 (头道×2道×3道× 4道×(5道))	罗拉中心距/mm (头道×2道×3道× 4道×(5道))
1^#	1+1	49.2/50.8	WB	2×2×2×2(×2)
2^#	2+2		WBWB	4×4×4×4(×4)
3^#	3+3		WBWBWB	6×6×6×6(×6)
4^#	4+4		WBWBWBWB	8×8×8×8(×8)
5^#	4+4	49.2/50.8	WWBBWWBB	8×8×8×8	95×95×95×
6^#	4+4		WWWWBBBB		95(×95)
7^#	1+7	12.8/87.2	WWWBWWWW	8×8×8×8
8^#	1+5	17.1/82.9	WWBWWW	6×6×6×6
9^#	2+6	25.6/74.4	WWBWWBWW	8×8×8×8
10^#	2+4	34.0/66.0	WBWWBW	6×6×6×6
11^#	3+5	38.2/61.8	WBWWBWWB	8×8×8×8

样品编号	头道纱条截面平均纤维根数	牵伸倍数 (头道× 2道)	罗拉中心距 (头道× 2道)/ mm	并合根数 (B+W)	头道喂入颜色排列方式(混纺比)
12^#	500	6×3
13^#	1 000	6×6	95×95
14^#	2 000	6×12
15^#	1 000	6×3	95×95	3+3	WBWBWB (50/50)
16^#		6×12
17^#			80×80
18^#	1 000	6×6	95×95
19^#			100×100