The core-spun yarn is a spun yarn spun with filament as the core and wrapped short fibers. It has the excellent physical and mechanical properties of the core filament and the wrapped short fibers. Commonly used yarn cores are polyester yarn, nylon yarn and spandex yarn. Cotton, polyester/cotton, acrylic, wool, etc. are commonly used for outsourcing short fibers. Core-spun threads mainly use sewing threads, shirt fabrics, burnt-out fabrics and stretch fabrics.
Core-spun yarns for sewing threads are polyester-cotton core-spun yarns made of high-strength polyester yarn with cotton fiber as the core; there are also nylon-cotton core-spun yarns made of nylon yarn with cotton fiber as the core. The percentage of cotton is 15%-40%. The single yarn is twisted and twisted to form a core-spun thread, which is then processed into a sewing thread. Its surface will not melt due to frictional heat in high-speed sewing.
The core-spun yarn for polyester-cotton shirting fabric is characterized by high cotton content. It uses fine single yarn as warp yarn to woven into a light shirt fabric. It has good moisture absorption, good air permeability, no static electricity, and comfortable wearing.
After the polyester-cotton core-spun yarn is woven into a fabric, the fabric is treated with chemical reagents to dissolve part of the cotton fiber by using the different dissolving properties of the two fibers, while retaining the polyester filament as the core of the yarn, so that the fabric has a partially translucent and beautiful pattern Patterned "burn-out" fabric.
Use spandex as the yarn core and use cotton, polyester cotton, polyester or acrylic fiber as the outer covering fiber to spun into a core-spun yarn to weave a high-stretch fabric. The yarn core has excellent elasticity, and the outer fiber can provide the required surface characteristics. The spandex content is generally 5%-20%.
Core-spun yarns are generally made of synthetic fiber filaments with good strength and elasticity as the core yarn, with short fibers such as cotton, wool, and viscose fibers being twisted together. The core-spun yarn has the excellent properties of filament core yarn and short-wrapped fiber. The more common core-spun yarn is polyester-cotton core-spun yarn, which uses polyester filament as the core yarn and wraps cotton fibers. There is also spandex core-spun yarn, which is a yarn made of spandex filament as the core yarn and outsourcing other fibers. The knitted fabric or jeans material made of this core-spun yarn can stretch freely and fit comfortably when wearing.
Its main purpose is to strengthen the cotton canvas and maintain the water repellency of the cotton fiber swelling when exposed to water. The polyester fiber has stretch resistance, tear resistance and shrinkage resistance when it is damp in the rain. At this stage, the core-spun yarn has developed into many types, which can be summarized as three types: short fiber and short fiber core-spun yarn, chemical filament and short fiber core-spun yarn, chemical filament and chemical filament core-spun yarn.
In addition to its special structure, core-spun yarn has many advantages. It can take advantage of the excellent physical properties of core yarn chemical fiber filaments and the performance and surface characteristics of short-coated short fibers to give full play to the characteristics of the two fibers and make up for their shortcomings. For example, polyester-cotton core-spun yarn can give full play to the advantages of polyester filaments that are crisp, crepe-resistant, easy to wash and dry, and at the same time, it can also take advantage of the advantages of outer cotton fiber that it has good moisture absorption, low static electricity, and is not easy to fuzz and pilling. The woven fabric is easy to dye and finish, comfortable to wear, easy to wash, bright in color, and beautiful in appearance.
The use of core-spun yarn is currently the most widely used core-spun yarn with cotton as the skin and polyester as the core. It can be used to produce school uniforms, work clothes, shirts, bathrobe fabrics, skirt fabrics, sheets and decorative fabrics. In recent years, an important development of core-spun yarns is the use of polyester core spun yarns covered with viscose, viscose and linen or cotton and viscose blends, as well as cotton and silk or cotton and wool. Blended covered core-spun yarns, these products are very popular.
According to the different uses of core-spun yarns, the main types of core-spun yarns currently include: core-spun yarns for apparel fabrics, core-spun yarns for stretch fabrics, core-spun yarns for decorative fabrics, and core-spun yarns for sewing threads. There are also many spinning methods for core-spun yarn: ring spinning, electrostatic spinning, vortex spinning, self-twist spinning and so on. At present, my country's cotton spinning industry mostly uses cotton ring spinning to spin core-spun yarn.
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