Spinning-winding united manufacturing process of corterra fully-drawn long yarns

Abstract

The invention discloses a spinning-winding united manufacturing process of corterra (PPT) fully-drawn long yarns, belonging to the technical field of production process of chemical fibers. The process comprising the following procedures: a procedure of preparing for raw corterra slices, a procedure of fusing, a procedure of spinning, a procedure of cooling and bundling, and a procedure of drawing and winding, wherein the procedure of drawing and winding comprises a step of fully drawing corterra yarns; the step is as follows: heating a pre-weaved corterra yarn bundle at low temperature through a first spinning heat roller set GR1; then drawing the corterra yarn bundle heated at low temperature through a second spinning heat roller set GR2 to form a corterra long yarn, and initially and thermally shaping the corterra long yarn at high temperature; and then further shaping the initially and thermally shaped corterra long yarn at high temperature independently through a third spinning heat roller set GR3 to form the corterra fully-drawn long yarns. The manufacturing process provided by the invention can effectively reduce internal drawing stress of the yarn bundle, increase winding quality, and meet the demand on production process of high-quality corterra long yarns so as to produce high-quality long yarns.

Description

technical field [0001] The invention relates to the field of chemical fiber production technology, in particular to the combined manufacturing technology of high-speed full-drawn filament spinning and winding. In particular, it involves the material preparation process for the high-speed telon chip raw material, the melting process for the high-speed telon chip raw material after the material preparation, the spinning process for the high-speed telon melt, the cooling and bundling process for multiple high-speed telon primary fibers, and the high-quality telon The drafting and winding processes of Tron tow are sequentially combined with the continuous completion of the high-Tron full-drawing filament spinning and winding joint manufacturing process. Background technique [0002] Polytrimethylene terephthalate (PTT) is a polymer formed by esterification and polycondensation of terephthalic acid (TPA) and 1,3-propanediol (PDO). Teron polymer has special properties due to its ...

AI Technical Summary

Problems solved by technology

And the above-mentioned high-temperature heat-setting of the high-temperature hot-roller only through a pair of high-temperature hot rollers or a pair of high-temperature single-rollers, because the pair of high-temperature hot-rollers are limited by the effective length of the high-temperature hot-roller, the high-temperature hot-roller tow is wound The number of turns on the pair of high-temperature hot rollers is limited, so it is difficult to extend the time for the high-temperature heat-setting of the high-temperature tow (that is, the time for the tow to leave the pair of high-temperature hot rollers from arriving at the pair of high-temperature hot rollers) travel time)

In the same way, the pair of high-temperature single rollers is limited by the effective length of the high-temperature hot rollers, so that the number of turns of the high-temperature single-roller to be wound on the high-temperature single-roller is limited, so it is difficult to extend the high-temperature tow Heat setting time (that is, the time required for the tow to travel from reaching the pair of high-temperature single rollers to leaving the pair of high-temperature single rollers)

It can be seen from this that it is difficult to effectively eliminate the drawing stress inside the tow by only relying on a pair of high-temperature hot rollers or only a pair of high-temperature single rollers to heat-set the high-temperature filament tow, and it is easy to cause high-temperature filaments in the winding process. Loose and shrink along the axial direction, and the yarn cake is too badly formed, it is difficult to unwind, and it is difficult to produce high-quality filament

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