The method of producing yarns for knitwear

 

(57) Abstract:

Usage: textile industry, spinning and knitting production. The inventive method of the fiber length of 30 - 40 mm form a single yarn with a coefficient of twist equal to 34.8 - 36,4, rewind it on the packing density is 0.28 - 0.32 g/cm3that process stimulating agent in the form of steam or drug-based paraffin emulsions. Processing package steam is carried out at a temperature of 75 - 85oC for 30 - 45 minutes 2 C. p. F.-ly, 2 tab.

The invention relates to the textile industry and can be used in spinning and knitting production.

A known method of producing yarn for knitwear by loosening fibers, scratching, stretching the fibrous tape, form a single yarn and processing it in a package stabilizing agent (1).

Obtained in this way the yarn is uneven effect stabilization, which determines when it is used in knitwear production increased breakage of the yarn and the production of defective knitted fabric with a large pattern.

Objective of the claimed invention is the, ostasio in improving the quality of single yarn used in the knitting industry.

This technical result in the method of producing yarns for knitwear by loosening fibers, itching, pulling the fibrous tape, form a single yarn and processing it in a package stabilizing agent is achieved by the fact that processed stabilizing agent packing with single yarn formed by coil single yarn density is 0.28-0.32 g/cm3while single yarns formed from fibers of a length of 30-40 mm at the rate of twist equal to 34.8-36,4.

As a stabilizing agent use steam while processing package with single yarn ferry carried out at a temperature of 75-85aboutC for 30-45 minutes as a stabilizing agent drug use on the basis of paraffin emulsions.

The method is as follows.

The fiber length of 30-40 mm is subjected to loosening, itching, obtained fibrous tape pull and form a ring or open-end spinning machine single yarn with a coefficient of twist equal to 34.8-36,4. Then the yarn is subjected to stabiliziruyushchee quality of the manufactured products. For this purpose, a single yarn is wound on the packing density of 0.28-0.32 g/cm3which is treated with a stabilizing agent in the form of steam at a temperature of 75-85aboutC for 30-45 minutes Steaming carried out cyclically for three cycles.

As a stabilizing agent can be used the drug on the basis of paraffin emulsions.

P R I m e R 1. Fibrous material with a fiber length of 35 mm, is subjected to loosening, itching, pulling on standard equipment. Then of fibrous tapes form a single yarn with a coefficient of twist equal to 36,4. Single yarn wound on the package with a density of 0.28 g/cm3. After that, the yarn in the package stabilize to give her state of equilibrium that will allow subsequent processing of superior quality. The stabilization is carried out by steaming at a temperature of 75aboutC for 45 min, which is carried out in several stages, cycles (3 cycles).

P R I m m e R 2. Fibrous material at a fiber length equal to 40 mm, is subjected to the same treatment as in example 1, except that the coefficient of twist of the yarn is equal to 34.8, the packing density 0.32 g/cm3stabilizati the ine fibers, equal to 38 mm, is subjected to the processing specified in example 1. The coefficient of twist of the yarn is equal to 35.6, and the packing density of 0.30 g/cm3. Stabilization is carried out at a temperature of 80aboutWith over 40 minutes

The implementation of the fast with a density of 0.28-0.32 g/cm3immediately after spinning with the exception of the operation of winding and twisting in the most effective way will affect process performance and energy savings, and when rewinding the yarn with the specified density are soft packing acceptable for further processing stabilizing agent to secure the yarn in a particular state. This wipedout single yarn, using a fiber length of 35-40 mm extra long staple cotton, which previously to obtain single yarn not used, so couldn't get the yarn needed to knit production with specific properties. Using yarn processing stabilizing agent within the specified limits will allow you to get a single yarn instead of twisted while saving production space, electricity and improving the quality of single yarn of a new kind; as mentioned previously single yarn with properties of woven not Virab is AI after it finishes, with a decrease of less than 0.28 g/cm3you will notice an increase in breakage of the yarn during its fast and, accordingly, the unsuitability of its use.

The specified range fiber 35-40 mm allows the twist required yarn with a specified coefficient of twist. The combination of these ranges winding density of the yarn on the package, its processing and coefficient of twist will allow you to obtain the equilibrium yarn new type single yarn instead of woven and accordingly made of her products with properties that were not achieved by using a known single yarn and twisted, such as consumer shrinkage of knitted cloth.

When fixing of the yarn steaming increasing temperature and time of steaming leads to deterioration of quality indicators yarn and change color cotton fiber, and reducing the minimum values of these parameters does not allow to reach the level of fixation yarn, which also affects its quality.

In table.1 shows the results of processing the yarn ferry.

From table.1 shows that for a typical package in its density of 0.38-0,42 g/m3after stabilization of the yarn by steaming neravnotsenno with the stated method of the nonequilibrium turns from the outer layer to the inner is 2, that is 10 times smaller relative to the known method, and the interval shrinkage in the known method is in the range from 4.2 to 5.9, declared in the same way from 2.7 to 3.0, which is also 5 times smaller relative to the known method.

These data show an increase in the quality of yarn produced in accordance with the proposed method.

The resulting yarn has a equilibrium, rownameu and purity, which allows it to be used in the manufacture of a new range of knitted products of improved quality. For example, get knitted fabric, which has a skewed hinge bars not more than 6.6aboutin comparison with the known knitted fabric produced in accordance with BLT-16-660-171-75 more than 7aboutand according to GOST 1230-78 generally not recorded. The tensile strength in the famous knitted cloth is 222 N, and in the resulting knitted fabric 346 N. The shrinkage in length and width at 0.76%, compared with 3% in the famous knitted cloth.

In table.2 shows comparative qualitative characteristics of the yarn.

According to the table. 2, the yarn obtained in the described manner, has a higher quality, while reducing energy consumption and production areas.I fibrous tape, the formation of single yarn and processing it in a package stabilizing agent, wherein the processed stabilizing agent packing with a single yarn is formed by a coil of single yarn and with a density equal to 0.28 and 0.32 g/cm3while single yarn formed from a fiber length of 30 to 40 mm at the rate of twist equal to 34.8 36,4.

2. The method according to p. 1, characterized in that as a stabilizing agent use steam while processing package with single yarn steam is carried out at 75 85oC for 30 45 minutes

3. The method according to p. 1, characterized in that as a stabilizing agent drug use on the basis of paraffin emulsions.

 

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