RU2079587C1 - Method for production of cotton-flaxen yarn - Google Patents

Abstract

FIELD: textile industry; production of blended fibers. SUBSTANCE: the offered method includes blending of gray cotton fiber with cottonized flaxen fiber. Cotton fiber fraction amounts to 30-50 % and the balance, is flaxen fiber. Blended fibers are subjected to opening, cleaning and carding. Produced fibrous slivers are doubled and drawn with subsequent dry spinning. In spinning, yarn is formed with linear density of 25-29 tex with twist coefficient equalling 50-6O. On ring spinning frames, spindle rotation speed equals 3000-11000 rpm, and rotor rotation speed of open-end spinning frames is 45000-55000 rpm. EFFECT: higher efficiency. 6 cl

Description

 The invention relates to the textile industry, and in particular to methods for producing mixed fiber yarn.

 In conditions of shortage of cotton, the most important task in the textile industry is to replace cotton with cotonized flax fiber, which is close in parameters (length and crimp) to cotton.

 However, cotonized flax fiber (cotonin) is harder and coarser than cotton fiber.

 These properties limit the ability to process and produce yarn in household products from cotonin without adding cotton.

 There is a method of producing cotton yarn, which consists in mixing the harsh cotton and cotonized flax fiber, loosening and cleaning it, carding the fiber mixture, folding the fibrous ribbons and stretching them, followed by dry spinning, in which the yarn is formed on a spinning machine, for example, on a rotor rotor spinning machine.

 The disadvantage of this method is the insufficient assortment of produced cotton yarn suitable for the summer assortment of clothes, due to the breakage of the yarn during spinning.

 The basis of the present invention is the task of creating a method for producing cotton yarn, which allows to obtain a technical result, consisting in expanding the range of yarn used to obtain fabrics suitable for a summer assortment of clothes.

 This technical result in a method for producing cotton yarn, which consists in mixing the harsh cotton and cotonized linen fibers, loosening and cleaning them, carding the fiber mixture, folding the fibrous ribbons and pulling them with subsequent dry spinning, is achieved by the formation of linear density yarn 25 during spinning -29 tex with a twist coefficient of 50-60.

 The mixing of the fibers is carried out at a ratio of: cotton fiber 30-50% flax fiber the rest.

 Dry spinning is carried out on rotor pneumomechanical spinning machines of the BD-200 type.

Dry spinning is carried out at a rotational speed of the rotor of the pneumomechanical spinning machine equal to 45000-55000 min ^-1 .

 Dry spinning can be carried out on a ring spinning machine P-66-5M-6.

Dry spinning is carried out at a rotational speed of the spindles of the ring spinning machine equal to 9000-11000 ^-1 .

 The twist coefficient equal to 50-60, allows you to ensure the strength of the thread while its required thickness. The specified parameters are achieved due to the possibility of spinning by the dry method on a machine such as BD-200 and ring machines. At the same time, the selection of the rotor frequency of the rotor of the pneumomechanical spinning machine and the rotational speed of the spindles of the ring spinning machine are of great importance. Only the stated ratio of the rotor spindle speed allows you to get yarn with the specified characteristics at the output. In addition, the operation of the equipment in a given mode makes it possible to process cotton yarn without reconstruction of existing equipment.

 The method of obtaining is as follows.

 The splitting of flax fiber is carried out mechanically.

 At the beginning, the fiber is cut to facilitate transport and shorten it. Then the cut fiber is fed into a pneumatic feeder, where the initial opening of the fiber bundle and its dedusting takes place. Then the feeder continuously feeds a homogeneous mixture of fibers to the first thin cultivator for loosening the fiber bundles into separate strands while simultaneously shortening the fiber length and cleaning it, while regulating the fiber separation system.

The line includes 3-4 thin baking powder. At the exit of the last baking powder receive cotonized flax fiber, i.e. a fiber having a fineness and length comparable to that of cotton. Prepared flax fiber is sent for mixing with cotton. Mixing is carried out in a ratio of 30-50% of cotton fiber, the rest is cotonized flaxseed, and on a loosening-binder unit for cotton. The mixture is then carded on a carding machine. The resulting fibrous ribbons are folded and pulled on tape machines. The obtained fibrous tape is subjected to dry rotor spinning on a BD-200 type machine with yarn production of linear density of at least 25-29 tex at a rotor speed of 45000-55000 min ^-1 . In the process of dry spinning, the twist coefficient of the yarn is set in the range of 50-60.

When using a ring spinning machine, dry spinning of a yarn of linear density 25-29 tex is carried out at a spindle speed of 9000-11000 min _-1 .

 The choice of the totality of the indicated parameters of the spinning process made it possible to reduce the breakage of cotton yarn with a simultaneous decrease in linear density. Thereby, the prevailing prejudice about the impossibility of using the carding method to obtain cotton yarn for fabrics suitable for use in the summer assortment of clothes was overcome.

 This method allows you to get environmentally friendly and cheap yarn (without the use of chemical fibers), especially for products of children's summer assortment of clothes.

Claims (5)

 1. The method of producing cotton yarn, which consists in mixing the harsh cotton and cotonized linen fibers, loosening and cleaning them, carding the fiber mixture, folding the fibrous ribbons and stretching them, followed by dry spinning, characterized in that during spinning they form a yarn of linear density 25 29 tex with a twist coefficient of 50 - 60. 2. The method according to claim 1, characterized in that the mixing of the fibers is carried out at a ratio of
Cotton fiber 30 50
Flax Fiber Else
3. The method according to claim 1, characterized in that the dry spinning is carried out on rotor pneumomechanical spinning machines of the type BD-200. 4. The method according to claim 3, characterized in that the dry spinning is carried out at a rotational speed of the rotor of the rotor spinning machine 45000 55000 min ^{- 1} .  5. The method according to claim 1, characterized in that the dry spinning is carried out on a ring spinning machine P-66-5M-6. 6. The method according to claim 5, characterized in that the dry spinning is carried out at a rotational speed of the spindles of the ring spinning machine 9000 11000 min ^{- 1} .