Fancy yarn refers to a single yarn with structural and morphological changes. Its spinning method is to use special processes or devices in the processes of carding, roving and spun yarn to change the structure and shape of the yarn, so that the surface of the yarn has "dot" and "node" patterns. As an excellent fancy yarns manufacturer in China, Sinrylion introduces the main varieties of fancy yarns.
Core yarn
There are many types of core-spun yarns, which can be made from various raw materials according to actual needs. Commonly used spandex core-spun yarns, polyester or nylon core-spun yarns, and stainless steel wire core-spun yarns.
Spandex core-spun yarn
It is to feed a stretched spandex filament (generally stretched 3 to 4 times) between the middle roller and the front roller of an ordinary spinning machine to merge with the drafted sliver, and the original ribbon shape is made through the front roller. The fiber strips are wrapped around the outside of the ammonia thread. The linear density of this type of yarn is generally 12~30tex (33~83 tex) and can be used for knitted fabrics or woven fabrics. The fabric is elastic and comfortable to wear. At present, spandex core-spun green is mostly cotton-covered ammonia, and polyester-covered ammonia is also available. Spandex core-spun yarn can also be produced on a double-roller twisting machine or a special covering machine. The spandex yarn is wrapped with a layer of cotton yarn or nylon filament; some are also wrapped with silk and used to make the collar of silk T-shirts. The shrinkage of spandex yarn can make knitted collars stiff.
Polyester core-spun yarn
Polyester core-spun yarn is formed on an ordinary spinning machine by feeding a high-strength polyester filament between the middle roller and the front roller, and wrapping the original ribbon-shaped fiber on the surface of the polyester filament through the front roller. The yarn can be plied to make a high-strength polyester sewing thread, which not only has high strength, but also has a layer of cotton fiber on the surface, making it less likely to generate heat when passing through the needle eye of a high-speed sewing machine. This kind of yarn can also be woven into canvas for transportation belts. It not only has high strength, but also has good bonding properties with rubber after being coated with cotton fiber on the surface, overcoming the shortcomings of poor affinity between polyester and rubber.
Cotton blend yarn
This type of yarn is made by drawing stainless steel wire into 8,000 to 10,000 filament bundles (monofilament diameter 6 to 8 μm), which are cut into fibers on a draw frame, and then blended with cotton to form yarn. Fabrics using this type of yarn in both warp and weft directions have very good radiation resistance and shielding effects and can be used for national defense and civilian purposes. If the cotton fibers are burned with fire, it will become a very thin layer of stainless steel mesh.
Slub yarn
Slub yarn is an additional device added to the ordinary spinning frame to change the speed or stop of the front roller, thereby changing the normal draft multiple, and suddenly a thick spot is produced on the normal yarn, like a slub, so it is called slub yarn. In the same way, the middle and rear rollers can also be overfeeded suddenly, which will also change the draft multiple and produce bamboo knots. Currently, the linear density of commonly used slub yarns is 12~83tex (12~83 tex). The raw materials include pure cotton, chemical fiber blends, etc., mainly short fibers, but also medium-length and wool fibers. The length of the bamboo joints is generally not less than the length of the fiber. The length of the bamboo joints of cotton fiber is shorter, and that of wool fiber is longer. The thickness of the slub depends on the variety. The smallest slub is about 1 times thicker than the base yarn of the fancy yarn. This slub yarn is combined with a normal yarn of the same number to make clothing fabrics. The surface of the fabric Can present irregular patterns. When the slub yarn is 4 to 5 times thicker than the base yarn, the slub yarn is often wrapped with a thinner yarn or filament. Because the thickness of the slub is too different from the base yarn, the twist at the slub is very high. Small, this section of yarn is not only prone to hairiness, but also has low strength. This shortcoming can be overcome by wrapping it with a piece of yarn. The fabric woven with this yarn has a rough surface and a unique style; this yarn is also used to make corrugated yarn on a fancy twisting machine. Because the corrugation at the thick joints is extremely large and looks like corn, it is also called popcorn yarn.
Slub yarn can be divided into single color and two-color. Two-color slub yarn is also spun on a modified spinning machine. The middle roller and the back roller are driven by servo motors separately. Two rovings of different colors are fed from the back roller into the groove of the middle roller rubber roller and enter the front roller to form a drafting area. The other roving is drawn from the middle roller. The back feed and the front roller form a drafting area. By overfeeding on the basis of spinning two-color yarn, two-color slub yarn can be produced.
Intermittent AB yarn
This type of yarn spinning method is to feed a roving of different colors (or different dyeing properties) into the middle roller and the back roller respectively, and the middle roller and the back roller are driven separately, such as the middle roller and the front roller spinning A yarn. The back roller intermittently sends out B yarn, and this section forms AB yarn. When sending B yarn, A yarn should be slowed down to ensure even evenness. This type of yarn has been mass-produced in South Korea and has just started in China. Intermittent AB yarn is shown in color picture 1-7.
Two-color alternating yarn
The spinning principle is the same as that of two-color slub yarn, which is also spun on a modified spinning frame. The middle roller and the back roller each send out a roving of different colors, and the two pairs of rollers send yarn alternately. For example, the middle roller sends out color A roving, and the front roller drafts and spins a section of A yarn; when the A yarn stops, the back roller starts to send B color roving to spin a section of B yarn. A section of AB yarn will be generated at the alternation of two colored yarns, and the length of each section of colored yarn can be set through the program.
Big belly gauze
The main difference between this kind of yarn and slub yarn is that the thick sections are thicker and longer, while the details are shorter. Generally, slub yarn has fewer slubs. There are only about two slubs in 1m, and they are very short. Therefore, slub yarn is mainly based on the base yarn, and the slubs play an embellishment role. The big-belly yarn is mainly thick sections, which highlight the big belly, and the lengths of the thick details vary greatly. Currently, the commonly used belly yarns are 100~1000tex (1~10 metric count), and the raw materials used are mainly wool-type long fibers such as wool and acrylic fiber.
Color point yarn
Yarn with dots of various colors attached to the surface of the yarn is called colorful dot yarn. Some have light-colored dots attached to a dark-colored base yarn, and some have dark-colored dots attached to a light-colored base yarn. This kind of colorful dots is usually made of famous short fibers and rolled into particles, which are then added during spinning after dyeing. Both cotton spinning equipment and carded wool spinning equipment can produce colored wool particles.
Due to the addition of short fiber particles, the yarn is generally spun thicker, with a linear density of 100~250tex (4~10 tex). This type of yarn is mostly used in carded woolen fabrics, such as hams in tweed. This (steel tweed), etc., are all woven with colorful dot yarn. Polyester short fibers can also be rolled into particles, mixed with cotton yarn, and then dyed at room temperature after being woven into cloth. Because polyester requires high-temperature and high-pressure disperse dyes to be colored, white dots like stars are formed on the surface of the fabric, giving it a unique style. Dark-colored particles are also added to light-colored fabrics to make colorful ideas appear on the surface of the fabric, giving it a unique style. Several different styles of colored point yarn are shown in Color Pictures 1-10 to 1-12.
knotted yarn
This kind of yarn is similar to colorful point yarn, but it only uses one color of ideas, such as particles made of cotton or viscose fiber added when spinning polyester yarn. After this yarn is woven into cloth, if polyester is dyed with disperse dyes, the cotton will not be colored and will show dots of white stars (color picture 1-13). Arrange this kind of yarn and ordinary yarn at a certain distance in the warp direction, and after dyeing, it will form a strip shape. If it is added at intervals in the weft direction, it will form a grid shape.