RU2241082C1 - Single yarn for textile articles - Google Patents

Abstract

FIELD: textile industry.

SUBSTANCE: invention provides tarn that can be used in manufacture of textile articles for sewing work outfits for fire-service and metallurgical plant workers, for examples outfit parts such as hoods, erect collars, and the like, which allows assortment group of these articles to be substantially expanded and high consumer's properties ensured at reduced cost price. Yarn exhibits a complex of properties such as fireproofness, strength, elasticity, and ergonomic properties, which allow the yarn to be employed in manufacture of textile and tricot used for sewing parts of clothes. In addition, yarn is also distinguished by low price due to use of staple fibers. Mixed single yarn for textile articles contains heat-resistant and wool fibers. The former are staple fibers made from synthetic high-polymer material of "rusar" and having linear density 0.21-0.25 and arithmetic mean length 50.0-60.0 m. Such fibers are obtained by untwining complex synthetic high -polymer material or "rusar" threads. Thus obtained yarn consists of (i) a rod in the form of the bundles of, synthetic high-polymer material or "rusar" fibers joined together by individual wool filaments having linear density not higher than 0.44-0.49 tex, arithmetic mean length 55-70 mm, and twisting 9.0 turns in 1 cm and (ii) a shell composed of intermediate layer preferably of wool fibers helically arranged at an angle 15.0-30.0^o to the rod and discontinuous outer layer formed by synthetic high-polymer material pile or "rusar" fibers. On the whole, yarn contains 10-40% of wool fibers and 60-90% of synthetic polymer material or "rusar" fibers.

EFFECT: improved protective efficiency of textile articles.

3 dwg, 2 tbl, 2 ex

Description

The invention relates to the textile industry and relates to yarn, which can be used for the manufacture of textile products used in the manufacture of suits for firefighters and metallurgical workers, for example, clothing items: hood, stand-up collar, etc., which can significantly expand an assortment group of these products while ensuring consumer properties and reducing their cost.

Known wool fibers coated with arimide / Fire Firefinhters 8 heat stress - Fire Jhief, 1989, v. No. 6; 1989, v. 33, No. 6, p. 4 /, used to develop the inner layer of a multilayer piercing material used in the manufacture of protective clothing under thermal loads.

The disadvantage of threads made of wool fibers coated with arimide is their reduced hydrophilicity and absorbency of moisture released by the human body during work, which greatly affects the hygienic properties of the clothes made.

Known yarn produced from Terlon fiber / RF Patent No. 2019594, class. D 03 D 15/12, 15/00, p. 1 /, used for the production of weft yarn used in the manufacture of fabric, which is made with a predominant 80-90% yield of the main threads from heat-resistant material on the front side, and threads representing yarn from Terlon fiber, - on the wrong side. This gives fire resistance and heat resistance to the fabric.

The disadvantage of Terlon fiber threads is their reduced hydrophilicity and the absorption of moisture released by the human body during work, which greatly affects the hygienic properties of the clothes made.

Known para-aramid fibers Kevlar 29 (manufacturer firm "DuPont" (USA)) / RF Patent No. 2041986, class. D 03 D 15/00, p. 3 /, which are used for the production of technical fabrics of linen, 3-ply, twill, satin and matting. Fabrics have high resistance, elasticity to shock loads. The disadvantage of all fabrics from Kevlar is their low flexural stability and compressive strength.

Known yarn produced from a mixture of woolen and oxalone fibers / RF Patent No. 2019594, class. D 03 D 15/12, 15/00, p. 3 /, used to produce weft yarn used in the manufacture of heterogeneous fabric, which is made with a predominant 80-90% yield of the main threads from heat-resistant material on the front side, and threads consisting from a mixture of woolen and oxalone fibers on the wrong satin, satin or twill weave. This gives the fire and heat resistance of the fabric and ensures the hygiene of its wrong layer, and the heat resistance of the outer layer of the fabric due to the CBM thread and ensures the hygiene of its wrong layer. At the same time, 10-20% of the threads, consisting of a mixture of wool and oxalone fibers, goes to the front side of the fabric, and since oxalon fiber has low fire resistance compared to CBM, this can lead to premature destruction of the fabric structure when it is used in open flame.

Closest to the claimed technical solution is a blended single yarn for textiles / US Patent No. 4958485, CL. D 02 G 3/02, published. 09/25/1990, p. 4, 8 /, containing stapled heat-resistant aramid fibers Kevlar or Nomex and natural fibers and consisting of a core and a sheath. In this case, the core consists of heat-resistant aramid fibers Kevlar, Nomex or polybenzimidazole (РВI), and the sheath is made of natural fiber. This gives the yarn fire resistance and improves its hygiene. At the same time, Kevlar, Nomex or polybenzimidazole (PBI) aramid fibers have lower strength, tensile elongation and fire resistance compared to CBM or Rusar fibers, which can lead to faster wear of products.

The technical result of the claimed invention is the elimination of this drawback, namely the creation of a single yarn with increased: strength due to the additional connection of the fibers with the core, fire resistance and at the same time improved hygiene indicators of products from it.

From the obtained yarn, blended fabrics of linen weaving were worked out.

The task is achieved by the fact that in mixed single yarn for textiles, stapled fibers of CBM or Rusar are used as stapled heat-resistant fibers, obtained when the composite yarns of CBM or Rusar are pulled and have a linear density of 0.21-0.25 tex and an arithmetic average length of 50.0-60.0 mm wherein the rod is made in the form of a bundle of CBM or Rusar fibers combined by single wool fibers with a linear density of not more than 0.44-0.49 tex, with an arithmetic mean length equal to 55-70 mm and from itostyu 9.0 crimps of 1 cm; and the shell consists of an intermediate layer mainly of wool fibers with their spiral arrangement at an angle to the shaft equal to 15.0-30.0 ° and an intermittent outer layer formed by pile from CBM or Rusar fibers in the following ratio of components in yarn,%:

Woolen fibers 10-40

Stapled fiber CBM or Rusar 60-90

CBM - heat-resistant ultra-strong, ultra-high modular para-aramid fiber, thread. The fiber, CBM thread belongs to the heterocyclic group and has the following composition: polyamidobenzimimidazole based on heterocyclic n-diamine and terephthaloyl chloride. Fiber, CBM thread has the following properties: high strength, incombustibility, durability and high modulus of elasticity (K.E. Perepelkin. Modern chemical fibers and the prospects for their application in the textile industry. Russian Chemical Journal, No. 1, 2002, p. 42).

Rusar is a heat-resistant ultra-strong, ultra-high modular para-aramid fiber, thread. Fiber, CBM thread belongs to the heterocyclic group and has the following composition: polyamidobenzimimidazole based on heterocyclic p-diamine (45-35 mol%), n-phenylenediamine (5-15 mol%) and terephthaloyl chloride (50 mol%). Fiber, Rusar thread has the following properties: high strength, incombustibility, durability and high modulus of elasticity (K.E. Perepelkin. Modern chemical fibers and the prospects for their application in the textile industry. Russian Chemical Journal, No. 1, 2002, p. 42).

For a better understanding of the essence of the proposed solution, we provide images.

In Fig.1, 2 presents the yarn in cross section; figure 3 in longitudinal form.

Figure 1 presents the arrangement of the fibers in the cross section of the yarn, where

1 - a rod consisting of bundles of CBM or Rusar fibers 2, united by a single woolen fibers 3;

4 - a shell consisting of an intermediate layer 5, mainly of woolen fibers and a discontinuous outer layer formed by a pile of CBM or Rusar fibers 6.

Figure 2 presents the micrograph of the cross section of the yarn at a magnification of x297, performed on a highly efficient optical computerized system "Microcolor 2000", where

1 - a rod consisting of bundles of CBM or Rusar fibers 2, united by a single woolen fibers 3;

5 - an intermediate layer mainly of woolen fibers.

Figure 3 presents a micrograph of a longitudinal view of the yarn made on a highly efficient optical computerized system "Microcolor 2000", where

4 - a shell consisting of an intermediate layer 5, mainly of woolen fibers and a discontinuous outer layer formed by a pile of CBM or Rusar fibers 6.

Example 1

Mixed single yarn for textiles with a twist of 360 cr / meter, containing stapled heat-resistant fibers and woolen fibers and consisting of a core and a sheath, where stapled CBM fibers obtained by razvolneniye complex yarns CBM and having an average linear density of 0.21 tex and arithmetic mean length equal to 50.0 mm, while the rod is made in the form of a bundle of CBM fibers, united by single wool fibers with an average linear density of 0 .44 tex and an arithmetic mean length of 55 mm and a crimp of 9.0 twists per 1 cm. The shell consists of an intermediate layer mainly of wool fibers with their spiral arrangement at an angle to the shaft of 15.0% and an intermittent outer layer formed by a pile of CBM fibers, and, %:

Woolen fibers 10.0

Staple fiber CBM 90.0

Example 4

Mixed single yarn for textiles with a twist of 360 cr / m, containing stapled heat-resistant fibers and woolen fibers and consisting of a core and a sheath, characterized in that stapled fibers of rosars obtained by breaking complex yarns and having an average linear density 0.25 tex and arithmetic mean length equal to 60.0 mm, while the rod is made in the form of a bundle of Rusar fibers combined by single wool fibers with an average with a linear density of 0.49 tex and an arithmetic average length of 70 mm and a crimp of 9.0 twists per 1 cm.The shell consists of an intermediate layer mainly of wool fibers with their spiral arrangement at an angle to the shaft of 15.0% and a discontinuous outer layer formed by a pile of Rusar fibers. Moreover,%:

Woolen fiber 20.0

Staple fiber Rusar 80.0

A single yarn containing stapled CBM or Rusar fibers was developed under the conditions of the Institute of Technical Cloths LLC (St. Petersburg), while the linear density of the yarn is 82.5-89.4 tex, twist: 260-360 cr / m.

The inventive yarn is made using a hardware spinning system on standard spinning equipment.

The CBM or Rusar fibers obtained from the gantry machine are mixed with wool, crushed and oiled on a pinch-sizing machine, and then, after the mixture is aged, it is fed to a Befama three-machine apparatus with a roving carriage. The roving received from the apparatus is sent to spinning. The spinning process is carried out using a ring spinning machine ПБ-114-Ш.

The physicomechanical properties of the yarn were evaluated according to a standard method in accordance with ISO 2062 "Simple Tensile Test on yarns and threads". GOST 6611.0-73-GOST 6611.4-73 "Textile threads, acceptance rules and test methods" (Table 1).

The results of yarn research indicate that yarn produced from a mixture of stapled CBM or Rusar fibers and wool has high strength properties. From the obtained yarn Example No. 3, a plain weave fabric was made, where the main and weft yarns have the same composition and the same twist of 360 cr / meter. In accordance with NPB 157-99, physico-mechanical and physico-chemical studies of the resulting tissue were performed (Table 2).

The yarn obtained from a mixture of regenerated CBM fibers and wool is flexible due to the fact that the yarn consists of a core in the form of bundles of CBM fibers united by single wool fibers, as well as a sheath consisting of an intermediate layer mainly of wool fibers with their spiral arrangement and discontinuous outer layer formed by pile of CBM fibers in the following ratio of components in yarn,%.

The inventive combination of signs of yarn provides a set of properties such as fire resistance, strength, flexibility and consumer (including erganomic), allowing you to use it in the manufacture of fabric, knitwear used in the manufacture of clothing items. Along with the listed features, yarn is economical due to the use of regenerated fibers.

Claims (1)

Mixed single yarn for textiles, containing stapled heat-resistant fibers and wool fibers and consisting of a core and a sheath, characterized in that the stapled fibers of CBM or Rusar obtained by razvolneniye of complex threads SVM or Rusar and having a linear density of 0 , 21-0.25 tex and arithmetic mean length 50.0-60.0 mm, while the rod is made in the form of a bundle of CBM or Rusar fibers, united by single woolen fibers with a linear plane with a thickness of not more than 0.44-0.49 tex, with an arithmetic mean length of 55-70 mm and a crimp of 9.0 twists per 1 cm, and the shell consists of an intermediate layer mainly of wool fibers with their spiral arrangement at an angle to the shaft of 15-30 °, and an intermittent outer layer formed by a pile of CBM or Rusar fibers, with the following ratio of components in yarn,%: Woolen fibers 10-40 Stapled fiber CBM or Rusar 60-90

Images