JPH03831A - Production of yarn for knitting or weaving - Google Patents

Abstract

PURPOSE:To obtain the subject yarn, having a high tenacity with hardly any yarn unevenness and suitable for tricot fabrics by wrapping synthetic fiber multifilament yarn around the periphery of a fleece delivered from a front roller while twisting the fleece. CONSTITUTION:A fleece corresponding to fine spun yarn of >=80 English count and synthetic multifilament yarn having >=7g/denier and 7-30 denier size are arranged parallel and fed to a front roller of a spinning machine and the above- mentioned multifilament yarn is wrapped around the fleece delivered from the aforementioned front roller in a coiled from while twisting the fleece with twist retroacting from a downward ring to afford the objective yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for producing a fine, high-strength textile yarn particularly suitable for tricot.

(Prior Art) Tricot fabrics such as tricot half, tricot mesh, and tricot crepe knitted using cotton yarn or synthetic fiber multifilament yarn are used as fabrics for lingerie, women's underwear, and the like.

(Problem to be solved by the invention) However, tricot using synthetic fiber multifilament yarn has a smooth and glossy knitted surface with no fuzz, and has high strength and is easy to knit, but on the other hand, it has poor moisture absorption. It had the disadvantage of being scarce. On the other hand, although tricone fabrics made from cotton threads have excellent moisture absorption, they lack smoothness due to the fuzz of the cotton threads, are lack luster, and have uneven threads, so they lack the aesthetic appearance of knitted fabrics. Due to the large variation in the number of yarns, thread breakage is likely to occur during knitting, and it is difficult to use fine cotton yarns of 80 or higher as tricot knitting yarns, making it impossible to obtain tricot knitted fabrics with a high gauge and full set of cotton yarns.

Therefore, in order to take advantage of the hygroscopicity of cotton yarn and obtain a fine-gauge tricot knitted fabric, attempts were made to use composite yarns such as covering yarns, which are made by using cotton yarn as a core yarn and wrapping synthetic fiber filament yarn around it. However, in a covering machine, the cotton thread is passed through the center hole of the bobbin on which the filament is wound, and the filament thread unwound from the bobbin is wound around this cotton thread, so that the filament is wound around the cotton thread (covering). The point changes depending on the position of the unwinding point where the filament yarn is unwound from the bobbin and the winding diameter of the bobbin, and the wrapping becomes more uneven in the length direction of the running yarn, and therefore the yarn strength becomes more uneven. As the size increases, the minimum strength decreases, and therefore it is extremely difficult to use it for knitting fine gauge tricot knitted fabrics of 28 gauge or higher.

This invention combines cotton yarn and synthetic fiber multifilament yarn using a spinning machine, so that the texture of the cotton yarn is not lost.
Although it has moisture absorption properties, it has low fuzz and yarn unevenness, and has excellent strength, and can be used for knitting fine gauge tricot, pantyhose, tights, etc.
The present invention provides yarn for l14i.

(Means for Solving the Problems) In order to solve the above problems, in the present invention, the front roller of the spinning machine is made of fleece equivalent to a thin spun yarn with a count of 80 or more, and a fleece with a tensile strength of 7 g/denier or more. ,
Synthetic fiber multifilament yarns with a fineness of 7 to 30 deniers are supplied in parallel, and the fleece sent out from the front roller is twisted by twisting backwards from the lower ring, and the synthetic fiber multifilament yarns are coiled around it. Wrap it into a shape.

Examples of the synthetic fiber multifilament yarn having a tensile strength of 7 g/denier or more include strong nylon 6 and aramid fiber. The composition ratio of fleece made of cotton fibers and synthetic fiber multifilament yarn is 60/
40-85/15 is preferred.

(Function) The fleece sent out from the front roller is twisted into cotton yarn, and a synthetic fiber multifilament yarn is wound around this cotton yarn to obtain a fine roughing yarn with a count of 80 to 150. In this case, the synthetic fiber multifilament yarn is sent out from the front roller of the spinning machine and supplied to the fleece being twisted, so there is less variation in the position of the point where the synthetic fiber multifilament yarn joins the cotton fleece. There is less variation in the wrapping in the length direction, and the average strength is improved and strength fluctuations are reduced compared to covered yarns in which synthetic multifilament yarns are wrapped around cotton yarns using a covering machine. However, if the tensile strength of the synthetic fiber multifilament yarn used is 7 g/denier, such as ordinary nylon fiber or polyester TA fiber, the strength is insufficient and the desired knitting yarn cannot be obtained. If the fineness of the synthetic fiber multifilament yarn is less than 7 denier, it shrinks and lacks strength; on the other hand, if it exceeds 30 denier, it is too large and the desired fine knitting yarn cannot be obtained.

(Example) Egyptian cotton (average fineness 1.2 denier, effective fiber length 38
The cotton roving (65 gelens/30 yards) obtained from the spinning machine is fed to the rollers of the ring spinning machine, giving a total draft of 37 times to make a fleece. A multifilament yarn of 10 denier 5 filaments made of strong nylon 6 (manufactured by Toyobo Co., Ltd., tensile strength 7.3 g/denier) was supplied at a distant position, and the composition ratio of cotton fibers was 81.
．． 2%, composition ratio of synthetic fibers 18.8%, total count 100
A roughing yarn (Example) having a count of 2, 31.9 twists/25.4 twists, and 2 twists was obtained.

On the other hand, 123 obtained from the same Egyptian cotton as in the above example
The cotton yarn with the same count and the multifilament yarn as described above are supplied to a single covering twister, and the yarns are mixed and twisted with the same composition ratio, total count, number of twists, and twist direction as in the above example (Comparative Example 1)
I got it.

In addition, the fleece and multifilament yarn of the above example were supplied to the same position of the front roller so that the multifilament yarn overlapped in the center of the fleece, and the core had the same composition ratio, total count, number of twists, and twist direction as in the example. A spun yarn (comparative J142) was obtained.

The physical properties of each of the knitting yarns of Examples, Comparative Example 1, and Comparative Example 2 and the number of yarn breakages that occurred while making one roll (50 m) of 3G gauge tricot using these yarns. Shown in the table below.

Table As is clear from the table above, the knitting yarns of the examples have less yarn unevenness, higher tenacity (lower tenacity unevenness, and less yarn breakage during knitting).

(Effect of the invention) The second invention is that the front roller of the spinning machine is made of fleece that corresponds to a fine spun yarn with an English count of 80 or more, and has a tensile strength of 7 g.
This is a method of manufacturing roughing yarn by arranging and supplying synthetic fiber multifilament yarns with a fineness of 7 to 30 denier or more in parallel, so it cannot be used with covering yarn manufactured with a conventional covering machine or with a spinning machine. A composite yarn with greater strength and less yarn breakage during knitting was obtained compared to the core spun yarn, and this composite yarn was
It can be used for fine gauge tricot and raschel knitted fabrics of 2 or more gauges, and for pantyhose knitted at high speed.The resulting knitted fabrics have excellent W&humidity and have little fuzz and yarn unevenness. It is a smooth knitted fabric with a beautiful appearance and is suitable for lingerie, foundation, women's underwear, etc.

Patent applicant: Tomiyama Boseki Co., Ltd. Agent: Patent Attorney Yoshi 1) Tsukasa Ryo

Claims (1)

[Scope of Claims] [1] A front roller of a spinning machine is equipped with a fleece equivalent to a fine spun yarn with an English count of 80 or higher, and a synthetic fiber multifilament yarn with a tensile strength of 7 g/denier or higher and a fineness of 7 to 30 denier. The yarn for knitting and weaving is characterized in that the synthetic fiber multifilament yarn is wound in a coil around the fleece fed out from the front roller in a parallel manner, while being twisted by twisting backwards from a lower ring. manufacturing method.