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Utilize twisting to increase yarn strength of textile fiber
by：Chengyi
2021-03-15
Twisting is mainly to improve the strength of the yarn. The twist cannot be used to compare the degree of twisting of different thickness yarns. The twist direction of the yarn has a great influence on the appearance and feel of the fabric. In the moisture absorption performance of the textile fiber, in addition to moisture absorption In addition to performance, the water absorption of textile fiber materials is also closely related to the wearing comfort of clothing fabrics.
Twisting is to make the two cross-sections of the yarn rotate relative to each other. At this time, the textile fibers originally parallel to the yarn axis in the yarn are inclined into a spiral. For short textile fibers, twisting is mainly to increase the strength of the yarn. The twisting of filaments can not only increase the strength of the yarn, but also produce a certain effect. The amount of twisting of the yarn and the matching of the twist direction and twist of the yarn in the fabric have a greater impact on the appearance and performance of the product.
Indexes of twisting properties include: twisting degree, twisting coefficient, and twisting direction indicating the twisting direction. The twisting angle of the yarn is twisted one turn into a twist. The number of twists per unit length of yarn is called twist. Cotton yarns in my country use special number system twist, which is expressed by the number of twists within 10cm yarn length; combed wool yarn and chemical fiber filament use metric count system twist, which is expressed by the number of twists per meter; in addition, There is the imperial count system twist expressed in the number of turns per inch.
Twist cannot be used to compare the degree of twisting of yarns of different thicknesses, because with the same twist, the degree of inclination of the textile fibers of thick yarns is greater than that of thin yarns. In actual production, the twist coefficient is often used to indicate the degree of twisting of the yarn. The twist coefficient is a relative value indicating the degree of twisting of the yarn in combination with the linear density, which can be used to compare the degree of twisting of yarns of different thicknesses. The twist coefficient can be calculated based on the twist of the yarn and the linear density of the yarn.
The twist direction of the yarn has a great influence on the appearance and feel of the fabric. By using the twist direction of the warp and weft yarns to match the fabric weave, fabrics with different styles such as appearance and feel can be woven. When the textile textile fiber is placed in the air, it will continuously exchange water vapor with the air, that is, the textile textile fiber continuously absorbs the water vapor in the air, and at the same time continuously releases the water vapor into the air. The ability of textile textile fibers to absorb or release water vapor is called the moisture absorption of textile fibers.
The moisture absorption of textile textile fiber is one of the important physical properties of textile textile fiber. The hygroscopicity of textile textile fibers has a certain influence on the shape, size, weight, physical and mechanical properties of textile textile fibers, which also affects its processing and use performance. The moisture absorption capacity of textile fibers also directly affects the wearing comfort of clothing fabrics. The textile fiber with high moisture absorption capacity can easily absorb the sweat discharged by the human body, adjust the body temperature, relieve the feeling of dampness, and make 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.
Among the common textile textile fibers, wool, hemp, viscose textile fibers, silk, cotton, etc. have strong moisture absorption capabilities, while synthetic textile fibers generally have poor moisture absorption capabilities. Among them, vinylon and nylon have slightly better moisture absorption capabilities. At present, synthetic textile fibers with poor moisture absorption capacity are often blended with natural textile fibers or viscose textile fibers with strong moisture absorption capacity to improve the moisture absorption capacity of fabrics.
In the moisture absorption properties of textile fibers, in addition to moisture absorption, the water absorption of textile fiber materials is also closely related to the wearing comfort of clothing fabrics. The water absorption of textile fibers refers to the ability of textile fibers to absorb liquid water. The water vapor and sweat produced during people's activities are mainly ahead of the moisture absorption and water absorption properties of the material, absorb and radiate outwards, so that people feel comfortable. Generally speaking, outerwear is mainly wetted by rain, so we can choose textile fibers with low water absorption as outer clothing materials; underwear is mainly wetted by the body’s insignificant evaporation and perspiration, so it is necessary to choose moisture absorption and high water absorption. The textile fiber is used as underwear material.
Twisting is to make the two cross-sections of the yarn rotate relative to each other. At this time, the textile fibers originally parallel to the yarn axis in the yarn are inclined into a spiral. For short textile fibers, twisting is mainly to increase the strength of the yarn. The twisting of filaments can not only increase the strength of the yarn, but also produce a certain effect. The amount of twisting of the yarn and the matching of the twist direction and twist of the yarn in the fabric have a greater impact on the appearance and performance of the product.
Indexes of twisting properties include: twisting degree, twisting coefficient, and twisting direction indicating the twisting direction. The twisting angle of the yarn is twisted one turn into a twist. The number of twists per unit length of yarn is called twist. Cotton yarns in my country use special number system twist, which is expressed by the number of twists within 10cm yarn length; combed wool yarn and chemical fiber filament use metric count system twist, which is expressed by the number of twists per meter; in addition, There is the imperial count system twist expressed in the number of turns per inch.
Twist cannot be used to compare the degree of twisting of yarns of different thicknesses, because with the same twist, the degree of inclination of the textile fibers of thick yarns is greater than that of thin yarns. In actual production, the twist coefficient is often used to indicate the degree of twisting of the yarn. The twist coefficient is a relative value indicating the degree of twisting of the yarn in combination with the linear density, which can be used to compare the degree of twisting of yarns of different thicknesses. The twist coefficient can be calculated based on the twist of the yarn and the linear density of the yarn.
The twist direction of the yarn has a great influence on the appearance and feel of the fabric. By using the twist direction of the warp and weft yarns to match the fabric weave, fabrics with different styles such as appearance and feel can be woven. When the textile textile fiber is placed in the air, it will continuously exchange water vapor with the air, that is, the textile textile fiber continuously absorbs the water vapor in the air, and at the same time continuously releases the water vapor into the air. The ability of textile textile fibers to absorb or release water vapor is called the moisture absorption of textile fibers.
The moisture absorption of textile textile fiber is one of the important physical properties of textile textile fiber. The hygroscopicity of textile textile fibers has a certain influence on the shape, size, weight, physical and mechanical properties of textile textile fibers, which also affects its processing and use performance. The moisture absorption capacity of textile fibers also directly affects the wearing comfort of clothing fabrics. The textile fiber with high moisture absorption capacity can easily absorb the sweat discharged by the human body, adjust the body temperature, relieve the feeling of dampness, and make 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.
Among the common textile textile fibers, wool, hemp, viscose textile fibers, silk, cotton, etc. have strong moisture absorption capabilities, while synthetic textile fibers generally have poor moisture absorption capabilities. Among them, vinylon and nylon have slightly better moisture absorption capabilities. At present, synthetic textile fibers with poor moisture absorption capacity are often blended with natural textile fibers or viscose textile fibers with strong moisture absorption capacity to improve the moisture absorption capacity of fabrics.
In the moisture absorption properties of textile fibers, in addition to moisture absorption, the water absorption of textile fiber materials is also closely related to the wearing comfort of clothing fabrics. The water absorption of textile fibers refers to the ability of textile fibers to absorb liquid water. The water vapor and sweat produced during people's activities are mainly ahead of the moisture absorption and water absorption properties of the material, absorb and radiate outwards, so that people feel comfortable. Generally speaking, outerwear is mainly wetted by rain, so we can choose textile fibers with low water absorption as outer clothing materials; underwear is mainly wetted by the body’s insignificant evaporation and perspiration, so it is necessary to choose moisture absorption and high water absorption. The textile fiber is used as underwear material.
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