JPH05321061A - Antistatic conjugated fiber and its production - Google Patents

Abstract

PURPOSE:To provide the subject conjugated fiber containing a low-fineness wool fiber and excellent in antistaticity. CONSTITUTION:One of these inventions is an antistatic conjugate-spun yarn composed of a short fiber and a filament and having the sheath part made of a spun yarn composed of a conductive fiber exhibiting <=10<2>OMEGA.cm volume resistance and a wool fiber and the core part made of a polyester filament. The other is its production method. A high-grade conjugated fiber excellent in antistaticity can be provided and this fiber is useful for a high-grade outer wool clothing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite yarn containing wool fiber as a constituent component and excellent in antistatic property, and a method for producing the same.

[0002]

2. Description of the Related Art Wool fibers have a high degree of generation of static electricity due to friction and the like, and there have been problems that clothes are caught around the body and dirt such as dust adheres to the clothes. As a countermeasure against static electricity, there is a method of attaching an antistatic agent to the cloth, but it has poor washing resistance. There are also attempts to impart antistatic properties by mixing conductive fibers with wool fibers, but the conductive fibers are already rigid and difficult to uniformly mix with wool fibers,
In spun yarn, there is a problem that nep occurs particularly in fine count yarns.

Japanese Patent Laid-Open No. 59-30925 discloses a sheath-core type composite yarn in which an antistatic yarn is used for the core and short fibers are used for the sheath. In this technique, when the short fibers are polyester fibers, the composite yarn has antistatic properties, but when the short fibers are wool, the antistatic effect is insufficient.

[0004]

DISCLOSURE OF THE INVENTION The inventors of the present invention have conducted extensive studies to solve the above problems, and as a result, in producing a composite spun yarn using conductive fibers as short fibers in the sheath, Obtaining excellent antistatic properties by using eccentric type composite spun yarn in which the polyester filaments in the core part enter the center of the spun yarn and do not enter into the central part of the spun yarn The present invention has been completed and the present invention has been completed.

It is an object of the present invention to provide a fine-count composite spun yarn which uses wool fibers and is excellent in antistatic property, uniform and excellent in quality.

[0006]

The present invention has a sheath-core structure in which the sheath portion is made of a mixed spun yarn made of electrically conductive short fibers having a volume resistivity of 100 Ω · cm or less, and wool fibers, and the core portion is made of polyester long fibers. Which is a composite yarn in which the position of the polyester long fibers is eccentric, the electrically conductive composite yarn, the conductive short fibers having a volume resistivity of 100 Ω · cm or less, and the wool fibers are mixed. The roving is fed to the back roller of the spinning machine, drafted and spun from the front roller, twisted by the rotation of the traveler, and wound on a bobbin.In the draft area, the right or left side of the roving in the draft. A method for producing an antistatic composite yarn, which comprises supplying polyester filaments to the.

The conductive fiber used in the present invention may have a volume resistivity of 100 Ω · cm or less.
There are fibers containing metals such as copper, silver, zinc, tin, lead and nickel, and conductive inorganic substances such as carbon black, copper sulfide and tin oxide. Of these, cellulose fibers and acrylic fibers containing copper sulfide are preferable because they can impart antibacterial properties.

The sheath is composed of a mixed yarn of conductive fibers and wool fibers, and the ratio of the conductive fibers is preferably 1 to 20% by weight in order to give good antistatic property, more preferably 2 to
It is 10% by weight. As the polyester-based long fibers used for the core part, the strength is 3 g / d or more, the elongation is 35 to 60%, the initial Young's modulus is 70 to 110 g / d, the boiling water shrinkage is 4% or less, and the birefringence is 0.07 to 0.13. Polyester filaments of are preferred.

The composite spun yarn of the present invention has a high antistatic effect because the electrically conductive fibers are mixed in the wool fibers of the sheath portion. Furthermore, since the polyester filaments in the core part are reinforcing the strength of the spun yarn, and at the same time have an eccentric structure that is localized from the center part to the left and right or up and down, the wool fibers generated due to the heddle and the reed due to the reed at the time of weaving Prevents the nude phenomenon due to misalignment.

In the present invention, the fact that the position of the polyester type continuous fiber is eccentric means that the arbitrary 30c of the composite yarn of the present invention is used.
In the photograph of the cross section (plane perpendicular to the yarn axis) obtained by sampling 10 points at regular intervals from m, 8 points or more indicate the case where the center point of the polyester continuous fiber does not coincide with the center point of the composite spun yarn. At this time, the cross-sections of the composite spun yarn and the polyester continuous fiber are approximate to a circle, and the respective center points are obtained.

Next, a method for manufacturing the composite spun yarn of the present invention will be described. FIG. 1 is an example for carrying out the spinning method of the present invention. The roving R composed of wool fibers and conductive fibers is supplied to the back roller 1 of the ring spinning machine, and the draft area of the spinning machine is provided between the back roller 1 and the apron roller 2 and between the apron roller 2 and the front roller 3. The roving is drafted in the area and spun from the front roller, while the polyester filaments F are fed from the front roller 3 to the right side (or left side) of the roving in the draft via the tension control device 6, and then the traveler. By the rotation of 4, the drafted roving yarn and the polyester continuous fiber are twisted together to form a composite spun yarn, which is wound into a cup 5.

The tension of the polyester filaments supplied to the front roller 3 is given by the tension control device 6, but the tension supplied to the front roller is 0.2 g / d.
The following is preferable, and if it exceeds 0.2 g / d, the polyester filaments enter the center of the core to form a concentric composite yarn.
When the obtained spun yarn is used for weaving, nude is likely to occur.

[0013]

EXAMPLES The present invention will be specifically described below with reference to examples.

[0014]

Example 1 Fiber length 51 m containing 10% by weight of copper sulfide
m copper ammonium cellulose short fiber (volume specific resistance 1Ω
・ Cm) 7% by weight and 93% by weight of wool fiber are mixed, and using a blended cotton and a card, a wool fiber-based 70th count,
0.4 g / m basis weight roving and strength 4.2 g / d, elongation 4
5%, initial Young's modulus of 95 g / d, boiling water shrinkage of 3%, interlaced interlacing number of 5 d / f of 15d / 6f polyester filaments, and using a ring spinning machine of FIG. The polyester continuous fiber was supplied to the front roller at a tension of 1.0 g while being drafted 30 times to obtain a composite spun yarn of 1/60 Nm with a twist number of 70 T / M.

[0015]

Example 2 Fiber length 51 m containing 10% by weight of copper sulfide
m acrylic short fiber (volume resistivity 0.1 Ω · cm)
5% by weight and 95% by weight of wool fiber were mixed, and in the same manner as in Example 1, a wool fiber-based 70th count, 0.4 g / mesh
A 1/60 Nm composite spun yarn was obtained in the same manner as in Example 1, except that the roving yarn of m and the polyester filament used in Example 1 were used.

[0016]

Example 3 Fiber length 51 mm containing 3% by weight of metallic copper
Copper ammonia cellulose fiber (volume resistivity 100Ω
(Cm) Wool fiber sliver 70s was produced in the same manner as in Example 1 except that 10% by weight was used, and 1/60 Nm of composite spun yarn was obtained in the same manner as in Example 1.

[0017]

[Comparative Example 1] 70-count, 0.4 g / m2 basis weight wool fiber roving and polyester antistatic long fibers (volume resistivity 10
Ω · cm) 15d / 6f was used to obtain a 1/60 Nm composite spun yarn in the same manner as in Example 1. Using the composite spun yarn obtained as described above as warp and weft, weaving a woven fabric,
It was dyed and finished by a conventional method. The performance is shown in Table 1. Friction electrification voltage: Measured according to JIS-L-1094 B method, and the measurement was carried out at 20 ° C. × 20% RH. The antibacterial property was shown by the sterilization rate by the shake flask method, and Staphylococcus aureus was used as the bacterium.

As is apparent from Table 1, the composite spun yarn of the present invention was excellent in antistatic performance and was of high quality without generation of nude in the woven fabric. Furthermore, it has excellent antibacterial properties against Staphylococcus aureus.

[0019]

[Table 1]

[0020]

INDUSTRIAL APPLICABILITY The present invention is capable of providing a high-quality composite spun yarn that is excellent in antistatic property, does not cause a nude phenomenon during weaving, and is a high-quality woolen garment mainly for high-class outerwear. Can be provided.

[Brief description of drawings]

FIG. 1 is a schematic view of a ring spinning machine for producing the composite spun yarn of the present invention.

[Explanation of symbols]

 1 Back roller 2 Apron roller 3 Front roller 4 Traveler 5 Cup 6 Tension control device R Rough yarn F Polyester filament

Claims (2)

[Claims] 1. A composite yarn having a sheath-core structure in which a sheath portion is made of conductive short fibers having a volume specific resistance of 100 Ω · cm or less and wool fibers, and a core portion is made of polyester long fibers, and has a sheath-core structure. An antistatic composite yarn characterized in that the polyester filaments are eccentrically located. 2. A roving mixed with electrically conductive short fibers having a volume resistivity of 100 Ω · cm or less and wool fibers is supplied to a back roller of a spinning machine, drafted and spun from a front roller, and A process for producing an antistatic composite yarn, which comprises supplying polyester-based filaments to the right side or the left side of a roving yarn in a draft in a draft region when twisted by rotation and wound on a bobbin.