Method and device for manufacturing fully drawn yarn/pre-oriented yarn stranding composite yarn by one-step process

Abstract

The invention discloses a one-step preparation method of stranding composite yarn of fully drawn yarn / pre-oriented yarn and a device thereof. The method includes that an FDY filament device is adopted to haul part tow on the back of a spinning box to two clod godet rollers to obtain POY yarn. The left tow is hauled to two hot godet rollers to obtain FDY yarn. The two tows are winded with a speed of 2800-3200m / min after being networked through a network device to obtain multi-strands of stranding composite yarn of fully drawn yarn / pre-oriented yarn. The device is to add two cold godet rollers on the filament device. The network device and a winding device are arranged to the back of the cold godet rollers and two hot godet rollers. The invention shortens the production process, reduces the equipment occupying space, lowers the consumption of the production cost, raw materials and energies and effectively solves the technical problem of finishing the spinning and the stranding in one step. The whole process is stable. The product quality is reliable. The quality defect that monofilament in yarn is easy to appear in a composite yarn product can be completely eliminated. The yield is three times of that of the prior art. And the production efficiency can be improved greatly.

Description

technical field [0001] The invention belongs to the technical field of synthetic fiber production technology and equipment, and specifically relates to a method and device for manufacturing fully drawn yarn / pre-oriented yarn ply composite yarn in one step after modification of conventional FDY filament equipment. Background technique [0002] Composite yarn is a filament made of two fibers with different characteristics, such as elongation and shrinkage, which are compounded through the network. The composite silk fabric of FDY (Full draw yam, fully drawn silk) and POY (Pre-oriemed yam, pre-oriented silk) not only has the fullness and softness of simulated satin, but also has the bright tone of silk, which overcomes the disadvantages of real silk. Not washable, poor color fastness, easy to pilling and other shortcomings, the fabric made of fully drawn yarn / pre-oriented yarn plied composite yarn has a good wool feeling, and the two-color effect is particularly obvious, which ...

AI Technical Summary

Problems solved by technology

[0004] First of all, the production cycle of fully drawn yarn / pre-oriented yarn plied composite yarn is too long. As shown in the figure above, fully drawn yarn can only be prepared through the two steps of Figure 1 and Figure 2, or the two steps of Figure 1 and Figure 3 / pre-oriented yarn plied composite yarn or DY / POY plied composite yarn, which not only increases the production cost, but also reduces the production efficiency; secondly, the production speed of drafting and network equipment generally does not exceed 1000m / min, and the production efficiency is low; However, the quality of the fully drawn yarn / pre-oriented yarn ply composite yarn produced by the two-step method cannot be guaranteed, and the purpose of improving the competitiveness of the production enterprise by using the product quality cannot be realized.

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