JPS60209032A - Spun yarn and its production - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a spun yarn and a method for manufacturing the same, and more particularly to a spun yarn with high gloss and excellent uniformity and a method for manufacturing the same.

<Relationship with conventional technology> In recent years, the tow-cutting sliver method, in which the tow is turned into sliver at once, has been reviewed for the purpose of labor saving, simplification, and abbreviation of the spinning process, and polyester is now the most commonly used material for clothing. using fiber. Research and development of this method is active.

However, 1) the tow of polyester fibers with high tenacity can be produced without unevenness and with high efficiency, and the sliver with good uniformity can be produced.
(A definitive method for obtaining Hiroki directly spun yarn has not yet been established. Therefore, the spun yarn line obtained by stretching the tow had problems in terms of uniformity. On the other hand, such Ninth step to improve cutting: ・A method of adding china clay or the like of 1.0 weight or less has been used, but although the uniformity of the resulting spun yarn is improved by a child, it is still at a very low level. .

The gloss of the spun yarn was also insufficient. This is thought to be due to the fact that the amount of China clay, etc. added was small, and the China clay, etc. fell off from the tow during cutting.

<Object of the Invention> In the present invention, it is better to use stable fibers of equal length than to improve the uniformity.

In addition, considering the spinnability of mono-length staple fibers and increasing the luster, this method was developed based on the fact that it is preferable to increase the amount of kaolinite compared to the conventional method, and it contains a specific amount of kaolinite. Polyester fiber length/
An object of the present invention is to provide a spun yarn made of I/fiber and a method for producing the same.

<Configuration of the Invention> The present invention has the following configuration to achieve the above object. In other words, the present invention is an equal length staple lv fiber of polyester fiber in which 1.3 weight to 5.0 weight of kaolinite is added to polyester ρ whose main repeating unit is ethylene terephthalate, etc. A spun yarn characterized in that the fineness (mite/L/) of long stable fibers is in the range of 0.1 denier or more and 4.0 denier or less, and a polyester μ whose main repeating unit is ethylene terephthalate. A method for producing a spun yarn, which comprises producing a sliver made of staple fibers of polyester fibers to which kaolinite has been added in an amount of 1.3 to 5.0% by weight, and then converging the fiber to obtain a spun yarn. It is.

In the present invention, the polynisder fiber constituting the spun yarn is a polyester whose main repeating unit is ethylene terephthalate to which 1.3 to 5.0 weight of kaolinite is added. It has almost the same refractive index as the above-mentioned kaolinite polyester. This makes the spun yarn rich in luster.

If the weight of kaolinite is less than 1.3%, sufficient gloss cannot be obtained, and if it exceeds 5.0%, the spinning nose and workability may be impaired.

Trouble occurs with strong elongation. Considering this point, it is preferable that kaolinite be contained in an amount of 1.5 to 4.0% by weight. In addition, kaolinite preferably has an average particle size of 0.05 μpR to 1.0 μm, and K is 0.1 μm.
Particularly preferred are those in the range of 0.8 μm. This is to increase gloss. Here, as the average particle diameter, the value at the cumulative 50% point of the uniform sphere diameter distribution obtained by a centrifugal sedimentation type particle size distribution analyzer (CP-50 model) manufactured by Shimadzu Corporation was used. Also anti-pilling.

In order to increase dyeability, atmospheric pressure dyeable polyester fibers may be used in place of the polyester fibers mentioned above.

The normal pressure dyeable polyester A/fiber is a fiber that can be dyed under normal pressure and is obtained by spinning polyester containing 80 mo/L/- or more of alkylene terephthalate edge units such as ethylene terephthalate and butylene terephthalate. Reed 1 For example, cationic dyeable fiber obtained by normal spinning or high-speed spinning of an alkylene terephthalate polyester copolymerized with a 5-metal sulfoisophthalic acid component t-0.5 to 6.0 mo#% based on the total acid component. etc.,
The polyester constituting the cationic dyeable fiber is 5-
In addition to the metal sulfoisophthalic acid component, other acid components such as isophthalic acid, adipic acid, and sepacic acid may be copolymerized, or in addition to the 5-metal sulfoisophthalic acid component, a glycol component such as diethylene glycol or neo Examples include fibers spun from polyesters obtained by copolymerizing appropriately selected compounds from benzyl glycol, neopentyl glycol-7μ xylene oxide adducts, and the like.

Next, the polyester fibers must be composed of stable fibers of one equal length. Since the horizontal uniformity will not improve due to the cutting and stretching, the purpose is to avoid a decrease in the uniformity due to the stretching by using pieces that have been cut to equal lengths from the beginning.

Furthermore, the fineness (de=-A/) of the equal length stable fiber is
The range is 0.1 de=-ρ or more and 4.0 deny ρ or less.

Preferably, aO is 1 denier or more and 1.0 denier or less. This is to improve uniformity.

・If the yarn is 0.1 denier, the uniformity will improve, but the strength as a spun yarn will drop significantly, so it is not preferable (,4
This is because if the denier exceeds 0 denier, the intertwining properties will decrease, making spinning difficult and reducing the uniformity. ) Here, the manufacturing method of the present invention will be explained.

First, kaolinite is added to a polyester whose main repeating unit is ethylene terephthalate, for example, a copolyester ρ containing 80 moA/% or more of ethylene terephthalate units, and preferably 1.3 to 5.0 weight, preferably 1.
．． A tow made of polyester fiber containing 5 weight or more and 4.0 weight or less is cut into equal lengths to obtain raw cotton. Next, this raw cotton is passed through the usual processes such as a mixing machine, a carding machine, and a filament machine to form sliver, and if necessary, it is passed through a roving machine to form roving yarn.

Next, as a method of focusing processing, use a false twist nozzle.

Method using interlaced claws, giving real twist.

Although interlacing + real twisting and other methods have been proposed, the present invention is not limited to any of these methods and can be used alone or in combination of several methods. Of course, when making the stable fiber bundle into a spun yarn, it is also possible to combine it with continuous multifilament yarn or processed yarn, and in that case, continuous multifilament yarn or processed yarn with a fineness thicker than that of the stable fiber can be used. 9. By using processed yarn, we can expect effects such as giving a stiff waist. Also.

Blending with natural fibers such as cotton is also possible as long as the luster is not impaired.

<Effects of the Invention> As described above, according to the present invention, a spun yarn that is rich in gloss, has excellent uniformity, has excellent texture, has improved dyeability, and has excellent anti-pilling properties can be easily produced, and the fabric can be It is rich in luster and has a soft texture and firmness.

Example 1 As glycol component, 27% of total glycol-ρ component
Neobentyl glycol ethylene oxide adduct (ethylene oxide adduct 7 5 mo/I/) and dicarboxylic acid component: 3JI: #- of 5-
Polyethylene terephthalate copolyester using sodium sulfoisophthalate has an average particle size of 0.3μ.
By adding various amounts of kaolinite, the spinning temperature was 290.
The fiber was spun at a winding speed of 1300 m/m. Pair this with thread,
A tow (500,000 denier) with a single fiber fineness of 1.0 denier was produced by drawing. Next, this tow was cut into staple fibers of equal length of 40 cm to obtain raw cotton. Next, this raw cotton is passed through a mixing machine, a carding machine, a filament machine, and a roving machine to make roving (
1,79 count) and then 40' on a ring spinning machine.
8 (English cotton count) spun yarn was produced. For comparison, a similarly spun yarn (40
'8) was produced in Experiment No. 1), and 1.0 gb of kaolinite was added to produce a 50,000 denier tow to produce a sliver of unequal length staple fibers with an average fiber length of 40 cm. A spun yarn (40'8) was produced in the same manner (experiment number 2).

Table 1 shows the physical properties of the obtained spun yarn. U% in the table, IP
I was measured using a US Evens tester manufactured by Keizoku Kogyo Co., Ltd. The smaller this value is, the better the uniformity is. Further, the number of fuzz was measured using an F-index tester manufactured by Shikishimabo Co., Ltd. For the physical properties of the fabric, we used a lawn weaving of spun yarn with a warp density of 82/fall density of 82/b, and the anti-build property was JIS-L-1076.
The values are shown after 10 hours of treatment using (Method A). A larger number indicates better anti-building properties. Also.

O indicates excellent, O indicates good, Δ indicates slightly poor, and × indicates poor.

As is clear from Table 1, experiment numbers + to 7 according to the present invention
Those with 100% luster are rich in luster (according to sensory tests).

The spun yarn also had excellent uniformity and had less fuzz.

The resulting fabric had excellent anti-build properties and was soft.

Claims (1)

[Scope of Claims] 1. Consisting of equal length staple fibers of polyester fibers in which 1.3 weight to 5.0 weight of kaolinite is added to polyester P whose main repeating unit is ethylene terephthalate, and A spun yarn characterized in that the fineness (denier/L/) of the long staple fibers is in the range of 0.1 denier or more and 4.0 denier or less. 2. The spun yarn according to claim 1, wherein the kaolinite has an average particle size of 1 μm or less. 3. Manufacture a sliver made of staple fibers of polyester fibers whose main repeating unit is ethylene terephthalate to which 1.3 weight to 5.0 weight of kaolinite is added, followed by convergence treatment and spinning. A method for producing spun yarn, characterized in that it is made into yarn.