Two-core covering yarn made by ring spinning and production method thereof

Abstract

Provided are a two-core covering yarn made by ring spinning and a production method thereof. The two-core covering yarn comprises an inner-layer yarn core and an outer wrapping fiber. The inner-layer yarn core is composed of a first centre yarn and a second centre yarn. The first centre yarn and the second centre yarn are arranged in parallel. The inner-layer yarn core is wrapped in a spiral form by the outer wrapping fiber. The first centre yarn is made by a polyurethane filament with weight percentage of 8.4. The second centre yarn is made by a polyester filament with weight percentage of 15.8%. The outer wrapping fiber is made by a cotton fiber with weight percentage of 75.8. The two-core covering yarn is of 36 Tex. A doubling long yarn passes behind a front leather roller of a spinning machine and is fed with an outer wrapping thick yarn into a twisting rectangular area composed of a front leather roller and a front roller. The outer wrapping thick yarn is stretched by a back roller and a middle roller. Two filaments are complementary in performance and featured by being high in elasticity and strength without broken filaments. Especially for a parallelly-arraying two-core yarn structure, fine wrapping performance is obtained and soft handfeel is achieved. Defects of utilizing air vortex spinning to make a two-core covering yarn are overcome.

Description

technical field [0001] The invention relates to the technical field of textile production, in particular to a double-core core-spun yarn produced on a ring spinning machine. Background technique [0002] Core-spun yarn is a kind of weaving yarn composed of inner yarn core and outer fiber. It utilizes the excellent physical properties of the inner yarn core chemical fiber filament and the surface characteristics of the outer short fiber to give full play to the advantages of the two fibers and make up for it. Their shortcomings, core-spun yarn is widely used in the production of fabrics such as school uniforms, work clothes, bathrobe fabrics, skirt fabrics, sheets and decorative fabrics. At present, the more common core-spun yarns on the market mainly include polyester, acrylic, vinylon, nylon, spandex, PTT fiber, PBT fiber, etc. Among them, spandex is the most widely used. This kind of spandex core-spun yarn has a single high-elastic spandex yarn as its core, and the spinni...

AI Technical Summary

Problems solved by technology

This kind of spandex core-spun yarn has a single high-elastic spandex yarn as its core, and the spinning method is mainly traditional ring-spinning. In terms of wearing performance, this yarn has good elasticity and is used as an elastic clothing fabric. The disadvantage is that the strength is low. With the increase of people's use and washing times, the elasticity will gradually weaken. After a long time, the clothing is easy to deform, and the wearing performance decreases, which cannot meet people's increasing requirements for clothing performance.

Although there are vortex-spun double-core core-spun yarns on the market, their intertwined yarn core structure will reduce the high elasticity of the yarn core, and the hand feel is poor. In addition, vortex spinning equipment is expensive, and its technology cannot be promoted and popularized. The spun double-core yarn is still blank

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