Improving Yarn Strength Of Textile Fibers By Twisting

It is to make relative rotation of the two cross sections of the yarn, when the yarn in the yarn is parallel to the yarn axis and tilted into a helix.

For short textile fibers, twisting is mainly aimed at improving the strength of yarns.

The twisting of filament can not only enhance the strength of yarn, but also produce some effect.

How much the yarn twists and how the yarn twists and twists in the fabric has a great influence on the appearance and performance of the product.

The indexes of twisting properties include twisting, twisting coefficient and twisting direction of twisting direction.

The twisting angle of yarn twists a circle.

The number of twists in the yarn per unit length is called twist.

China's cotton yarns are made of special number twist, that is, the number of twists in the length of 10 cm yarn. Combed wool yarn and chemical filament yarns are made in metric count twist, that is, the number of twists per meter. In addition, there are also British count twists expressed in the number of twists per inch.

Twist can not be used to compare the twisting degree of different coarse yarns, because the same twist, coarse yarn yarn tilting degree of textile fiber is more than fine yarn.

In practical production, the twisting coefficient is commonly used to indicate the twist degree of yarns.

The twist factor is the relative value of the yarn twist with the linear density, which can be used to compare the twisting degree of different coarse yarns.

The twist factor can be obtained based on yarn twist and yarn linear density.

The twisting direction has a great influence on the appearance and feel of the fabric. With the twist of warp and weft yarn, the fabric with different styles and hands can be weaved.

Textile textile fibers are placed in the air, which will continuously exchange water vapor with air, that is, textile and textile fibers continuously absorb water vapor in the air, and at the same time continuously release moisture into the air.

The performance of textile fibers in absorbing or releasing moisture is called the hygroscopicity of textile fibers.

The hygroscopicity of textile textile fibers is one of the important physical properties of textile and textile fibers.

The hygroscopicity of textile textile fibers has a certain influence on the shape, size, weight and physical and mechanical properties of textile fibers, thus affecting their processing and performance.

The moisture absorption capacity of textile fibers directly affects the wearing comfort of the fabric.

Textile fibers with high absorbability are easy to absorb sweat from human body, regulate body temperature and relieve wet feeling, which makes people feel comfortable.

Therefore, attention should be paid to the moisture absorption properties of textile fibers in commercial trade, textile fiber performance testing, textile processing and textile selection.

In common textile textile fibers, wool, hemp, viscose fiber, silk, cotton and other hygroscopic capacity is strong. The moisture absorption ability of synthetic textile fibers is generally poor. The moisture absorption ability of vinylon and nylon is slightly better, acrylic fiber is worse, polyester is worse, polypropylene and polyvinyl chloride are hardly moisture absorption.

At present, the synthetic textile fibers with poor moisture absorption are blended with natural textile fibers or viscose textile fibers with strong moisture absorption ability to improve the moisture absorption ability of fabrics.

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In addition to hygroscopicity, the absorbency of textile fiber materials is also closely related to the wearing comfort of the fabric.

The water absorbency of textile fibers refers to the performance of textile fibers absorbing liquid water.

The water vapor and sweat generated by people are mainly absorbed and dispersed by the moisture absorption and water absorption properties of the materials, thus making people feel comfortable.

Generally speaking, the coat is mainly wetted by rainwater, so it is possible to choose textile fibers with small water absorbability as outer garment materials. Underwear is mainly affected by inapparent evaporation and sweating of the body. Therefore, it is necessary to choose textile fibers with moisture absorption and water absorption as underwear materials.