CS249624B1 - Rotor spun woolen carded yarn - Google Patents

Abstract

The solution concerns a rotor yarn of the wool type, suitable in particular for machine processing on knitting machines. The yarn contains wool fibres, synthetic shrinkable fibres and animal hair. The essence of the solution lies in the fact that wool fibres with a fineness of 50' to 80 'S constitute 10 to 35 weight percent, synthetic fibres with a fineness of 2 to 4.5 dtex with a length of 40 to 100 mm and a shrinkability of at least 10% constitute 20 to 60 weight percent and blown animal hair constitutes 5 to 35 weight percent of the yarn. Animal hair is, for example, rabbit, hare and/or goat. The yarn has a machine twist factor of m of 50 to 80.

Description

(54)

Rotor spun woolen carded yarn

The invention relates to a wool yarn-type rotor yarn, particularly suitable for machine processing on knitting machines.

The yarn contains wool fibers, synthetic shrinkage fibers and animal hair.

The essence of the solution is that wool fibers with a fineness of 50 to 80 'S make up 10 to 35 weight percent, synthetic fibers with a fineness of 2 to 4.5 dtex with a length of 40 to 100 mm and a shrinkage of at least 10% percent and the animal blown hair constitutes 5 to 35 weight percent of the yarn. The animal hair is, for example, rabbit, hare and / or goat. The yarn has a machine twist coefficient of m and 50 to 80.

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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wool yarn of machine-type knitting yarn comprising wool fibers, synthetic fibers and animal hair, which is particularly suitable for the production of a top knitted garment.

Currently, the yarns are spun in a conventional or rotor manner, or in some of the unorthodox spuns, mostly as wool or cotton yarns.

Classical stabilized or bulky knitted carded and carded wool yarns from ring spinning machines are produced in standard quality, guaranteeing good workability on knitting machines into a wide range of knitted products. Due to the yarns processed by the rotor process, conventional knitted carded yarns are produced with a limited spinning speed, i.e. with lower production and productivity of the service section. For example, the spinning speed at spinning and the theoretical production of a single spindle in the rotor spinning process are about three times as high as in the conventional spinning process.

Rotor-spun wool yarns do not fully meet the quality requirements for machine knitting. The reason for the difficult processability of the rotor-spun yarns is their higher surface roughness, bending stiffness and hardness, which properties are predetermined by the rotor spinning technology, i.e., a higher yarn twist than the conventional annular spinning method.

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In the case of rotor stabilized or bulky yarns having the character of machine knitting yarn, a significant softness and smoothness of the yarn surface is required in comparison with conventional woolen yarn stabilized or bulky yarns due to the ease of further processing on knitting machines and the desirable knitwear made of them.

At present, the precipitated fibers are used in the form of staple fibers or filaments in one component of at least two-component mixtures of high-volume fibrous formations, especially yarns. In one known embodiment, for example, the high-shrinkage yarn component is copolyester fibers made from polyethylene terephthalate copolyesterified with polyethylene isophthalate, while the other components of the yarn are low-shrinkage synthetic or natural, optionally regenerated fibers. In another, also known embodiment, high-shrinkage and low-shrinkage fibers containing synthetic fibers are used in a low-component component of a stabilized fiber made of polyethylene terephthalate, copolyesterified with sodium 5-sulfoisophthalic acid, into a two-component mixture. Yarn with this component composition is characterized, inter alia, by a reduced tendency to pilling, a higher bulkiness, a better feel. For another type of high-volume fiber formation, in particular yarn of coagulated and non-coagulated components, copolyester or polyprojylene fibers of different coagulation are used as coagulates, which is reflected in the homogeneous structure of the yarn, its uniform bulkiness, increased strength and elasticity. In another type of known bulky fibrous formation of a mixture of coagulated and non-coagulated or less coagulated fibers, the co-coiled fiber is a copolyester fiber in which the base polyester consists of terephthalate acid and ethylene glycol, one copolyesterifying component being isophthalic acid providing the necessary coagulation. The composition of the yarn ensures the affinity for alkaline dyes, soft

- 3,249,624 pleasant touch of the finished product with increased stability and reduced flammability.

They are known in the classic way made woolen yarns containing natural animal fibers in the form of hairs of various origins. However, these commonly manufactured yarns are unsuitable for processing into knits due to insufficient anchoring of the hair in these yarns.

Also, the commonly produced wool-type yarns spun by the rotary method, characterized by a higher flexural stiffness and a higher surface roughness compared to conventional wool-type yarns, do not fully meet the requirements in terms of knitting technology. For these reasons, ways have been sought to eliminate these negative qualitative indicators. One possibility is, for example, to reduce the number of spinning twists of the yarns produced by the rotor process, but this has the adverse effect of increasing the yarn breakage. Another possibility of producing suitable knitting-type rotor yarns intended for processing on knitting machines, sufficiently strong and uniform and with an appropriate anchoring of the fibers in the yarn, is the variability of the composition of the fiber components. Following the pattern of wool-type yarns spun in a conventional manner, the co-production of natural animal fibers mixed with chemical fibers was considered in the rotor yarn production. However, the expected and satisfactory result was not achieved because the yarns did not show a typical knitting character in this case either.

According to the invention, the above-mentioned drawbacks are eliminated by the construction of a rotor yarn of stabilized or bulky woolen carded type, particularly suitable for processing on knitting machines. The yarn comprises wool fibers, synthetic shrinkage fibers and animal hair. The essence of the invention consists in that wool fibers with a fineness of 50 to 80 <

4,249,624 to 60% by weight and have a fineness of 2-4 dtex having a length of 40 to 100 mm and the animal blown hair constitutes 5 to 35% by weight, the yarn having a machine twist coefficient of 50 to 80. The animal blown hair is for example rabbit, hare and / or goat.

By way of example, alternatively, polyacrylonitrile-based fibers or polyethylene terephthalate copolyesterified copolyesterified polyethylene isophthalate copolymers may be used in the synthetic precipitant component. In all these cases, chemical fibers precipitated by dry or wet heat can be used.

In the yarn, blown animal hair is used, i.e., free from hard impurities and dust, and their anchoring is suitable for rotor-spun yarns due to a higher twist.

In particular, the progress achieved by the invention consists in a good and satisfactory anchoring of the proportion of hair in the rotor-spun yarn, while maintaining the softness and smoothness of its surface and higher uniformity. The rotor yarn thus produced exhibits new utility properties which predetermine it for processing on knitting machines.

The invention is evident from several examples of spinning and the percentage material composition of stabilized or bulky types of yarn spun by a rotor process. In all cases, the preparation of the fiber blend was continuously linked to the loosening and mixing of the material, followed by the preparation of strands consisting of a carding operation, a single-pass stretching and a spinning itself. The basic condition for the preparation of the fiber mixture was perfect loosening and mixing of the fiber mixture, including soaking of fabric softeners. For the preparation of the strands it was necessary to provide a suitable wool carding machine producing a carded strand with a fineness of 9 to 11 ktex. The carded strands were subsequently processed on one passage of a drawing machine, equipped with a regulating device and a strand unevenness compensator for the possibility of processing fibrous material of short and long fiber staple length. The best fit was the roller draw-through mechanism, which ensured good quality of the strand with a resulting fineness of 5 ktex.

Example 1

Stabilized type of yarn 84 tex, colored with hue according to the color of rabbit hair.

Handling: 30% wool Brightness 60/58 s - gray% PANs Melana 3,3 dtex 60 mm - gray 15% rabbit hair - colorful

Example 2

Stabilized type of yarn 64 tex, colored with hue according to the color of rabbit hair or color part PANs. Underwear: 15% wool Brightness 60/58 * s - gray Australian wool 64/66 s - gray 30% PANS Melana 3,3 dtex 60 mm - gray 30% PANs Dolan 3 »3 dtex 60 ram - gray 10% rabbit hairs - colorful

Example 3

Bulk yarn type 64 tex, 78 tex, 125 tex, colored with hue according to the color of rabbit hair, or color proportion of PANs.

Handling: 25% wool Brightness 60/58 ^x s - gray 10% rabbit hair white% PESs Velana S 2.8 dtex 70 mm - gray 50% PANs Melana 3.3 dtex 60 mm - color

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Example 4

Bulky type yarn 50 tex, 64 tex, 78 tex, 125 tex, colored s. Shade according to the color of rabbit hair.

Handling: 25% wool Brightness 60/58 * s - gray% rabbit hair variegated% PESs Velana S 2,8 dtex 75 mm - gray% PANs Melana 3,3 dtex 60 mm - gray

Example 5

Bulky type of yarn 56 tex, colored with hue according to the color of rabbit hair.

Handling: 15% wool Brightness 60/58 * s - cut% Australian wool 67/66 and '- 10% hare hair - colorful 15% PESs Velana S 2.8 dtex 75 mm - gray 45% PANs Velana 3 »3 dtex 60 mm - color

Example 6

Bulky yarn type 64 tex, colored with shade according to color of wool share and PANs.

Handling: 35% wool Brightness 60/58 * s - colored 15% rabbit hair - colorful 15% Velana S 2.8 dtex 75 mm 20% VSs 3.5 dtex 60 mm - gray 15% PANs Melana 3.3 dtex 60 mm - color

Claims (1)

SUBJECT OF THE INVENTION 249 624 A rotor-spun woolen carded yarn comprising woolen and synthetic shrinkable fibers and another animal hair component, particularly suitable for processing on knitting machines, characterized in that the woolen fibers having a fineness of 50-80% comprise 10-35 wt. % synthetic fibers comprise 20 to 60 wt. % (having a fineness of 2 to 4.5 dtex with a length of 40 to 100 mm and a shrinkage of at least 10% and animal blown hair, for example rabbit, hare and / or goat, constituting 5 to 35% by weight, the yarn showing a machine twist 50 to 80.