Method and apparatus for making core-spun yarn of steple-fibre covered filament

Abstract

The present invention is characterized by that on the spinning machine it utilizes addition of a yarn tension control device and simple renovation of guide wheel to spin the invented core-spun composition yarn whose yarn is covered with staple fiber, and its covering rate is high. Said composite core-covered yarn not only has the appearance style, hand property, fluffy property and other advantages of staple fibre, but also possesses the strength and elongation, conformal property and drapping property, etc. of yarn.

Description

technical field [0001] The invention belongs to the technical field of spinning in the textile industry, in particular to a method and a device for manufacturing a core-spun composite yarn in which short fibers are covered with filaments. Background technique [0002] As we all know, composite (mixed) yarns between various fibers are called composite spinning (or blended). A new type of yarn with a sheath-core structure, which uses filaments as the skeleton yarn and forms short fibers covering the filaments, is a major development direction of new spinning in recent years. [0003] Conventional filament staple fiber composite spinning is generally carried out on friction spinning, rotor spinning, Sirofil, ring twisting frame, hollow spindle spinning frame or ring spinning frame at present. Theoretically speaking, it is hoped that three structures can be realized through the above methods: that is, from the perspective of the yarn cross section, it can be divided into the fo...

AI Technical Summary

Problems solved by technology

[0014] Since the tension of the filaments cannot be effectively controlled by the siro spinning device, different fiber bundles are entangled with each other in a helical shape like twisted twists, forming a structure similar to strands, resulting in the wrapping of the filaments by the staple fibers. The covering effect is poor, and the ideal core-spun yarn structure and covering effect cannot be achieved. The covering rate of short fibers to filaments is low, resulting in the defects of uneven yarn dryness and uneven fabric surface. This is a major obstacle to the widespread use of this type of yarn

[0015] At present, there is no technology and device capable of producing core-spun composite yarns with short fibers covered with filaments on the most widely used ring spinning sand machine.

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