Heavy-denier flat yarn continuous spinning process

Abstract

The invention discloses a heavy-denier flat yarn continuous spinning process. The process comprises the following steps of viscose metering molding, washing, baking and rolling, drawing molded yarns onto a small processing roll and a big processing roll through a yarn guide rod, sequentially performing regenerating, washing, desulfurizing, Ph value-adjusting, oiling and baking processes on the yarns on the small processing roll and the big processing roll, and rolling the baked yarns on a winding head under the action of a yarn guide wheel, wherein before the yarns are drawn to the small processing roll and the big processing roll, acid liquid on the yarns is scraped in a foam acid-scraping way. Continuous spinning can be finished on one set of spinning equipment, the breakage is low, the occupation area of the equipment is small, the acid bath loss is low, the continuity is higher, spindle positions are not mutually affected, and the produced heavy-denier flat yarns are high in quality, the rate of finished products and yield.

Description

technical field [0001] The invention relates to the field of viscose fiber production in the textile industry, in particular to a continuous spinning process for coarse denier flat yarn. Background technique [0002] The existing production process of coarse denier flat yarn is completed with semi-continuous spinning machine plus winding, washing system, drying equipment and tube forming equipment. There are many production processes in this way, and the distance between each equipment The span is large, the process is long, the process fluctuates greatly, the quality between batches is poor, it is easy to break, the yield is low, the cost is high, the labor intensity is high, and the production efficiency is low. In order to overcome the above-mentioned defects, the application number is 200910263475.9, and the Chinese invention patent application published on July 14, 2010 discloses a continuous spinning process for viscose coarse denier flat yarn, including viscose meteri...

AI Technical Summary

Problems solved by technology

But this invention also has the following disadvantages: 1, the molding equipment, washing equipment, and drying equipment used in this invention are all independent equipment, and conveying devices are also arranged between each equipment, and the span distance between each equipment is relatively large. Large, making the production equipment occupy a large area

During the production process, many spindles are producing at the same time. When one of the spindles needs to be dealt with when there is yarn separation, end breakage or glue leakage, after the spinning head is raised, the filaments need to be manually processed after they come out of the glass forming tube. Drafting, traction single-spindle wire sliver through the rotating pinch roller has potential safety hazards, and improper operation may also affect the quality of other spindles

Due to the manual drawing of the single spindle yarn through the rotating pinch roller, the drafting speed is slow, which reduces the yield of viscose staple fiber