JP2002054040A - Peach skin-like false twist composite yarn and method for producing woven fabric and knitted fabric using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a combined filament yarn having different feelings of a bulky peach skin-like feeling of false twisted yarn composed of an extra fine polyester fiber and a soft and firm and stiff feeling of nylon drawn yarn of thick fineness. SOLUTION: This peach skin-like false twisted composite yarn is characterized in that the composite yarn comprises a polyester false twisted yarn having <=0.5 denier single filament fineness and a nylon filament yarn having 2-10 denier single filament fineness and the hot water shrinkage percentage (a) of the polyester false twisted yarn and the hot water shrinkage percentage b of the nylon filament yarn satisfy the following relations of 6%<=a<=14% (1) and -5%<=a-b<5% (2).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyester fine-texture false-twisted yarn and a nylon filament yarn.
It relates to a mixed yarn that has both a chiskin-like texture and a supple, soft texture unique to nylon.

[0002]

2. Description of the Related Art Conventionally, a false twisting method has been used as a means for imparting bulkiness to a texture of a flat synthetic fiber. It is also known that a new texture is added by blending such a false twisted yarn with various fibers. For example, Japanese Patent Application Laid-Open No. 8-296134 discloses a false twist processing of an ultrafine filament. A composite yarn comprising a yarn and a non-crimped yarn of a large fineness filament is described.

[0003] However, the general false twisting method requires a process of twisting → heat setting → untwisting, so that the heat shrinkage of the yarn obtained by heat setting must be reduced. Was. For this reason, when the false twisted yarn and other fibers are blended, it becomes a so-called hetero-shrinkage blended yarn, which is likely to have a core-sheath structure in which the false twisted yarn is located in the outer layer and the other fibers are located in the inner layer.

On the other hand, as a yarn obtained by blending yarns of different fineness having a relatively uniform heat shrinkage, there is one described in Japanese Patent Application Laid-Open No. Hei 7-157932. The purpose of this invention is also to form the core-sheath structure by the difference in heat shrinkage. However, since the difference in the heat shrinkage rate is 2% or more, the lower limit of the range is not considered. In this case, almost no different shrinkage and blending effect occurs.

[0005] Incidentally, Japanese Patent Application Laid-Open No. H6-128827 discloses that
It is described that the dry heat shrinkage of the false twisted yarn is made to be 15% or more by false twisting the synthetic fiber containing the copolymer at a relatively low temperature.

[0006]

However, the prior art as described above has the following problems. First, the majority of mixed yarns using conventional false twisted yarns, such as Japanese Patent Application Laid-Open No. 8-296134, are prepared by disposing false twisted yarns in a sheath portion by the above-described core-sheath structure, and performing false twisting. The purpose is to emphasize the texture of the processed yarn. However, different from this purpose, the texture of not only false twisted yarn but also other fibers to be mixed can be obtained by using other fibers made of different polymers or having different fineness as other fibers. In such a case, with a general false twisted yarn having a low heat shrinkage, the other fibers shrink more, and it is difficult to obtain a desired texture.

[0007] Further, as described in JP-A-7-157932, when a false twisted yarn is not used, the heat shrinkage can be made uniform in the past, but the bulkiness accompanying false twisting is increased. I couldn't get a perfect texture, and it had poor swelling.

[0008] Furthermore, Japanese Unexamined Patent Publication (Kokai) No. 6-128827 discloses a composite yarn having a two-layer structure. The two types of fibers are made uniform in heat shrinkage ratio. There has been no false twisted yarn capable of remarkably obtaining both textures.

The present invention has been made to solve the above-mentioned problems, and has a texture of a bulky peach skin tone of a false twisted yarn made of ultrafine polyester fiber and a supple and crisp texture of a nylon filament yarn of large fineness. An object of the present invention is to obtain a mixed fiber having both different textures.

[0010]

According to the present invention, a single yarn fineness of 0.1 is provided.
Polyester false twist yarn of 5 denier or less and single yarn fineness of 2
A composite yarn comprising a 10-denier nylon filament yarn, wherein the hot water shrinkage ratio a of the polyester false twist yarn and the hot water shrinkage ratio b of the nylon filament yarn have the following relationship: It is a twist composite yarn.

6% ≦ a ≦ 14% (1) -5% ≦ ab <5% (2)

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The polyester false twisted yarn according to the present invention is characterized in that it has a higher heat shrinkage than ordinary false twisted yarns and is made of ultrafine yarn, as described later.
As such a polyester component, those mainly comprising polyethylene terephthalate are generally used.

[0013] The fineness of the polyester false twist yarn is 0.1.
It is necessary that the yarn be 5 denier or less in order to obtain a peach skin-like texture. In general, if the thickness of the ultrafine yarn is 0.1 denier or less, the strength is remarkably reduced, and thus the practicability may be poor.

A false twisted yarn made of such an ultrafine yarn is
It may be a directly spun one having the fineness, but it is difficult to stably produce by a normal false twisting method, so that a splittable composite fiber is false twisted as described later. A material obtained by splitting this afterwards is preferable.

One of the features of the present invention is that such polyester false twisted yarn has a higher heat shrinkage than ordinary false twisted yarn. That is, while the normal false twisted yarn often has a hot water shrinkage of 6% or less, the polyester false twisted yarn of the present invention has a hot water shrinkage of 6% or more, more preferably 8% or more. Have

The reason for using the false twisted yarn having a higher hot water shrinkage ratio than usual in the present invention is to reduce the difference in the hot water shrinkage ratio from the nylon filament yarn which is the blending partner. is there. Therefore, it is necessary that the difference in the hot water shrinkage from the nylon filament yarn is within 5%, preferably within 3%. If both yarns have a difference in the hot water shrinkage beyond the above range, the component having the higher hot water shrinkage sinks into the inner layer portion of the yarn due to the heat treatment, and it is difficult to sufficiently exhibit the feeling. On the other hand, in such a range, there is no large difference in shrinkage in hot water between the two yarns, and a core-sheath structure does not appear even by heat treatment.

The nylon filament yarn has a peach skin-like texture of the polyester extra fine false twist yarn described above.
It adds a unique and soft texture to nylon.

Nylon filament yarns also have the purpose of assisting a certain feeling of touch and resilience (stiffness, firmness) that are insufficient with ultrafine fibers alone. For this reason, the single-filament fineness of the nylon filament yarn needs to be 2 to 10 denier. In addition, those having a single-fiber fineness of more than 10 denier are generally unsuitable for use in clothing because of a hard texture.

Further, the nylon filament is preferably used not as a false twisted yarn but as a flat drawn yarn or a semi-drawn yarn. This is to obtain a feeling of rebound.

The above-described polyester false twisted yarn and nylon filament yarn are combined and integrated to form the composite yarn of the present invention. Here, the composite is generally formed by mixing and entanglement using a fluid such as air, so-called interlace mixing. However, as long as both yarns are integrated, it is not limited to mixed fiber entanglement, and may be twisting, drawing and other methods.

At the time of compounding, the ratio (denier ratio) of both yarns is preferably in the range of 30 to 70%. If the ratio of one component is less than 30%, the texture of the component may be significantly reduced. There is.

As described above, the composite yarn of the present invention, which is composite-integrated, has a polyester false twisted yarn and a nylon filament yarn both having large and small loops, and is randomly mixed to form outer, middle, and Each layer is formed. Therefore, it is possible to obtain a feeling and a repulsion due to both components.

Next, a method of manufacturing a composite yarn according to the present invention and a woven or knitted fabric using the same will be described.

In order to industrially stably produce the above-described false-twisted yarn made of polyester ultrafine fibers, a split-fiber composite having a certain degree of fineness at the time of false-twisting and the like, and which can be made ultrafine thereafter. Use fibers.

As such split-type composite fibers, easily dissolvable composite fibers obtained by joining two types of fiber-forming polymers having different dissolution rates are preferable. For example, one of the components is mixed with an acid, an alkali or another organic solvent. There are conjugate fibers that can be dissolved and extracted, and specifically, as those that can be dissolved and extracted with alkali, polyethylene terephthalate and one or two of dicarboxylic acids having a polyalkylene glycol or a metal sulfonate group are copolymerized. One obtained by bonding with polyethylene terephthalate can be mentioned.

The conjugate fiber may be formed in various shapes such as a multi-layered shape, a radial shape, a petal shape, a sea-island shape, and the like, as long as the fineness of the non-dissolved component is as described above. However, it is not limited to these.

In the method of the present invention, a false twisting treatment is performed before the splitting conjugate fiber is subjected to the splitting treatment. The content of the false twist processing is important in obtaining a false twisted yarn having a high heat shrinkage of the present invention, and in the same processing content as usual, it is possible to obtain only a false twisted yarn having a low heat shrinkage by receiving heat setting. Can not.

That is, in the method of the present invention, it is necessary to supply an undrawn yarn as the split-type composite yarn to be supplied to the false twisting step, and more specifically, to provide a composite yarn of about 40 to 80 × 10 ^-3. It is preferable to use an undrawn yarn having a refractive index. Those having a birefringence lower than this range are practically difficult to manage because of a large temporal change in quality, and those having a birefringence exceeding this range are not suitable for the production of undrawn yarn. This is because the operation may be unstable.

Next, an example of false twisting using such split-type composite fibers will be described with reference to the schematic process diagram shown in FIG. In the figure, undrawn yarn A of split-type composite polyester filament is supplied from feeder-1;
Feeder for arranging false twist heater 2 and twisting section 3
Stretch false twisting is performed between No. 1 and the first delivery roller (twisting region).

Next, the false twisted yarn and the nylon filament yarn B are twined in front of the first delivery belt-roller-4, and subsequently, between the first delivery belt-roller-4 and the second delivery belt-roller 6 (mixing area). Then, the mixture is formed into a mixed yarn by the fluid jet nozzle 5 and wound up in a winding shape by the winding roller 7.

In the above-described false twisting method, since undrawn yarn is used, it is preferable to perform so-called stretch false twisting in which stretching is performed in a twisted region.
It is preferred to be about eight times. As the twisting portion 3, various types can be used, but it is preferable to use a friction type false twist disk, and the twisting portion (T1) and the untwisting portion (T
It is preferable that the tension ratio (T1 / T2) in 2) be about 0.8 to 1.2.

Further, in order to obtain a high heat shrinkage false twisted yarn, the present invention sets the temperature of the false twist heater to 100 to 150 ° C.
It is necessary to perform the processing at preferably 110 to 140 ° C. Such a heater temperature is lower than that of ordinary polyester false twisting, but this is necessary to obtain a high heat shrinkage. Also, for similar reasons,
The yarn length between the false twisted yarn and the heater is preferably 1.0 to 2.0 m, and more preferably 1.2 to 1.8 m.

As described above, after obtaining the false twisted yarn of the split fiber conjugate fiber, the yarn is combined with the nylon filament yarn. As described above, it is necessary that the false twisted yarn is continuously wound without being wound once. This is because, if the plying is performed in a separate step after the winding process, unwinding twist or the like is applied, making uniform plying difficult, and disadvantageous in cost.

Further, after the two yarns are mixed and entangled with each other by a fluid entanglement treatment or the like, it is necessary to integrate the two yarns. Examples of the fluid entanglement processing include so-called interlace processing for imparting entanglement by an air flow, and so-called Taslan (registered trademark) processing for forming a large and small loop by injecting an air flow under overfeed. In this case, it is preferable to apply an air pressure of about 0.2 to 3.5 kg / cm ² .

After the false-twisted composite yarn is knitted and woven using the yarn, the splitting-type composite fiber is split.

The knitted fabric is prepared by adding the false twisted composite yarn to 50% by weight.
The structure is not particularly limited as long as it includes the above, but in the case of a woven fabric, the false twisted composite yarn is used for the weft and / or warp of plain weave or twill weave, and in the case of a knitted fabric, a general structure such as smooth is used. Can be used.

In addition to the false twisted composite yarn, a third yarn may be used within the above-mentioned range. Examples of the third yarn include an extended twisted yarn of a synthetic fiber, a false twisted yarn, a mixed fiber yarn, and a special function yarn. And the like.

Next, the woven or knitted fabric is subjected to splitting treatment to split the splittable conjugate fiber. The splitting treatment may be appropriately selected according to the type of the polymer constituting the splittable conjugate fiber to be used.For example, when splitting is performed by dissolution with an alkali, using caustic soda and heating It is preferable to carry out the treatment at.

[0039]

In the present invention, since the false-twisted yarn has a higher hot-water shrinkage ratio than the ordinary false-twisted yarn, the difference in the hot-water shrinkage ratio of each yarn constituting the mixed fiber is different. Is easy to use.

For this reason, even after the heat treatment, the nylon filament mixed with the false twisted yarn does not largely shrink and sink into the inner layer, and both yarns appear evenly on the surface layer and the texture is easily utilized. .

[0041]

EXAMPLE Polyethylene terephthalate (Y) copolymerized with 5-sodium sulfoisophthalic acid (Y) and ordinary polyethylene terephthalate (X) were formed into the shape shown in FIG.
Using a high-speed friction false twisting machine (SDS-8 manufactured by Teijin Machinery Co., Ltd.), a melt splitting composite yarn (115d / 25f, A yarn) having a birefringence of 60 × 10 ⁻³ bonded at a ratio of 3 is used. The yarn was false-twisted at a yarn speed of 600 m / min and T1 / T2 of 1.0 to obtain a 115d / 25f false-twisted yarn.

Further, during the false twisting process of the A yarn, the stretch false twist, the plying yarn, and the air processing were performed under various conditions by using the nylon filament stretched yarn (yarn B) and 45d / 10f by the production method shown in FIG. To obtain each mixed yarn. Table 1 shows the texture evaluation of the fabric obtained by weaving and refining a plain woven fabric using each of the mixed yarns as warp yarns, splitting the fabric under heating using caustic soda, and dyeing the fabric under heating. Shown in

[0043]

[Table 1]

As shown in Table 1, (ab) was -5% to 5%.
%, Only the fabric having a value of between 0.1% and 0.1% had a bulky, texture of a peach skin and a supple, soft texture unique to nylon, and had a certain feeling of touch, resilience, firmness, and firmness.

Incidentally, the composition ratio of the false twisted yarn of the final polyester filament after splitting was 54.5%, and the single yarn denier was 0.24 d / f. Those of the nylon filaments were 45.5% and 4.5 d / f.

[0046]

According to the present invention, the false twisted yarn made of ultrafine polyester fiber has both the texture of bulky peach skin tone and the texture of nylon drawn yarn of large fineness having different textures such as supple and crisp texture. Mixed yarns can be obtained, and fabrics using such mixed yarns have an unprecedented feeling of luxury, so they are suitable for a wide range of fields such as women's, men's clothing and sports casual clothing. is there.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a cross-sectional shape of a melt splitting composite yarn used for a mixed yarn of the present invention.

FIG. 2 is an explanatory view showing an outline of a process for producing a false twisted yarn of the present invention.

[Explanation of symbols]

 X polyethylene terephthalate Y copolymerized polyethylene terephthalate A melt splitting composite yarn B nylon filament drawn yarn 1 feeder 2 false twist heater 3 twisting section 4 first delivery roller 5 fluid injection nozzle 6 Second delivery roller 7 Rewind roller

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) D04B 1/20 D04B 1/20 21/00 21/00 B D06M 11/38 D02G 1/16 // D02G 1 / 16 D06M 9/04 (72) Inventor Shinichi Uchiya 47-1, Mizutachi-cho, Sabae-shi, Fukui Prefecture 35-1, Santanda F-term in Kita-Riku synthetic fiber factory (reference) 4L002 AA06 AA07 AB02 AB04 AB05 AC02 AC07 DA05 EA08 FA01 4L031 AA18 AA20 AB09 AB22 AB27 AB32 AB33 BA11 CA01 DA00 DA01 4L036 MA05 MA06 MA17 MA24 MA25 MA33 MA37 MA39 PA07 PA15 PA33 PA42 PA43 PA46 RA03 UA01 4L048 AA21 AA24 AA30 AA50 AB06 AB08 AB09 AB21 AC11 BA01 CA12 DA01 EB00

Claims (2)

[Claims] 1. A composite yarn comprising a polyester false twist yarn having a single yarn fineness of 0.5 denier or less and a nylon filament yarn having a single yarn fineness of 2 to 10 denier, wherein the hot water shrinkage a of the polyester false twist yarn and nylon A peach skin-like false twist composite yarn, wherein the hot water shrinkage b of the filament yarn has the following relationship. 6% ≦ a ≦ 14% (1) −5% ≦ ab <5% (2) 2. The split-split polyester undrawn filament yarn is false-twisted by a false twisting machine at a heater temperature of 100 to 150 ° C., and the false-twisted yarn and the nylon filament yarn are combined without being subsequently wound up. Woven using a peach skin-like false twist mixed-yarn yarn, which is knitted and then splitted after obtaining a mixed-yarn yarn having a heat shrinkage difference of 5% or less. Knitted fabric manufacturing method.