JPS58149374A - Production of fabric comprising false twisted laminar structured yarn - 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 The present invention relates to a method for producing a fabric made of a false-twisted layered structured yarn.

In recent years, by aligning or intertwining low-orientation yarns and high-orientation yarns, and performing false twisting, it is possible to create false-twisting by winding low-orientation yarns around high-orientation yarns. Methods for obtaining layered yarns are known. Products obtained from this yarn yarn are expected to have a spun-like texture due to their uniform appearance and excellent bulk.

However, the texture of fabrics made of the above-mentioned false-twisted two-layer structure yarns lacks the ground line II&, making it impossible to obtain a refreshing texture especially for spring and summer. These materials are fused or glued together, or treated with thermosetting resin, but the texture is unnatural (and the repellency is poor and hard soil is accentuated, so it is necessary to Although it has a desirable texture, it has not been put to practical use as a textile (+111).

The purpose of the present invention is to improve the problem of dryness, to provide a temporary fabric that is rich in coolness and elegant crispness, has a texture suitable for all seasons with a textured feel, and has excellent repulsion properties. twist) -
The purpose of this invention is to propose a method for manufacturing structural yarn fabrics.

That is, the present invention provides a method for manufacturing a fabric made of a false-twisted layer structure yarn with a core N-fold in which the sheath yarns surrounding the core yarn are alternately reversed in the S-twist and 2-twist directions. A polyester multifilament yarn is used as the core yarn of the twisted layer structure yarn, and the false twisted layer structure yarn is subjected to an additional twist satisfying the following formula, then woven, and the woven fabric is treated with alkali. The present invention is a method for manufacturing a woven fabric made of a yarn with a false-twisted layer structure, and further improves the texture by subjecting it to an alkali treatment, followed by a processing treatment using a silicone resin.

As a follow-up condition, however, T...Number of twists per 1m (Tha 1Dc...
...The yarn denier (d.) of the core yarn is satisfied.

The present invention will be explained in detail below.

The false twisted layer structure yarn used in the method of the present invention is a core-sheath layer structure yarn in which sheath yarns are wound around a core yarn by alternating KffL turns in the S twist direction and the 21m direction. , one in which sheath threads are arranged concentrically in two to three layers is preferably used. The yarn with this structure can be obtained by a known method, for example, by using a highly oriented yarn for the core yarn and a low oriented yarn such as a vermilion drawn yarn or a semi-drawn yarn for the sheath yarn, It is obtained by folding or intertwining the fibers with moss and then false twisting. In addition, it is necessary to use a polyester multifilament yarn with excellent texture and good repulsion properties for the core yarn. In addition, for the core, a material with a higher orientation than the sheath thread is used, but it can also be used not only as a drawn thread but also as a combination of a semi-drawn thread and a semi-drawn thread, or a combination of a semi-drawn thread and a non-drawn thread. Next, the mixing ratio of the wrinkled core yarn and sheath yarn is such that the core:sheath ratio is 7:3 to 4:6 in order to maintain the ground feeling and prevent the bulky texture. It is effective, and the yarn length difference between the core yarn and sheath yarn is 5~
However, for the same reason as the mixing rate, it is more preferable to use the yarn length of the sheath yarn at an increase of 10 to 25% of the core yarn.

The difference in thread length is! If it is less than 1%, it is difficult to obtain a core-sheath T-structure yarn that is alternately reversed and wound in the S-2 twist direction, and if it exceeds 70%, the sheath yarn may have a 31-wrap structure, which is not preferable. Since the core yarn and the sheath yarn have a real twist in the #8 double-wound structure portion and form a single structure, it is considered that the method of the present invention does not exhibit the effects.

In order to obtain a layered yarn with such a difference in yarn length, the core yarn 1 and the sheath yarn 2 are fed to the first feed roller 3, and the core yarn, Mix and intertwine the sheath threads.

Next, the second feed roller 5. It can be obtained by applying false twist while stretching between delivery rollers 6 and heat setting with a heater 7K. Reference numeral 8 denotes a false twisting device, and the yarn that is passed through the delivery roller 6 and wound into the winder 9 is obtained as a composite processed yarn having a two-layer structure in which the sheath yarn surrounding the core yarn is wound.

FIG. 1 is a schematic diagram of a false twisting process for producing a false twisted layer structure yarn conveniently used in the present invention.

The yarn thus obtained has a sheath yarn of 5vaII as described above.
It has a core-sheath-like structure with fingers twisted alternately in the z-twist direction, but since the core thread does not have a weave, if it is made with a woven fabric, the knot line will be lacking in texture and the refreshing feeling will be lost. However, in this case, due to the structure of the false-twisted layer structure, the core yarn and sheath yarn do not have a stiff texture. The condition is different, and the twist is concentrated in the core yarn within the area. If the number of twists does not satisfy the range of the above formula, the object of the present invention cannot be achieved. That is, if the number of twists is less than the range of the above formula,
The conventional drawbacks have not been improved and twisting has no effect, and on the other hand, if the twist is applied beyond the range of the above formula, the texture becomes hard and it is difficult to take advantage of the characteristics of the false-twisted layer structure yarn. It cannot be done.

In addition, the number of threads constituting the cough false-twisted layer structure yarn is not limited to three types.
There may be three or more types, and the layer structure is not only double but also three.
Heavy weight or higher may be used.

Then, the mosquito false-twisted layer structure yarn is woven, and there is no alkaline constant.

In general, the weight loss rate of 5% to 20% is excessive for alkali-treated jlK ako.If it is less than 6%, the texture will be hard and 20%
If it is more than that, the repellency will decrease, and the strength, tear strength, and slip strength will decrease depending on the purpose of the treated fabric and the structure such as AI weave. It is.

This alkali treatment can be carried out by the methods used for ordinary textiles, including heat treatment, dissolving chemical treatment, and water washing CgI wire for raw cloth, but scouring is carried out for raw cloth.
: dyeing (or not dyeing), drying, finishing setting, etc.

For example, when using caustic soda as the full force V, O
0S~30% caustic soda aqueous solution at temperature 5O-100℃
The treatment may be carried out for 20 minutes to 3 hours.

As described above, according to the present invention, the characteristics of the false-twisted layer structure system with the core//1111 ratio, core/thread length difference, etc. This solves certain problems of insufficient repulsion and insufficient ground line.

That is, the false twisted multilayer structured yarn used in the present invention is twisted to improve the ground stiffness, but at this time, the twisting tends to be concentrated in the core due to the structure of the yarn, so it is necessary to limit the twisting range. At the same time, due to the twisting concentrated in the core, the repellency becomes increasingly poor.By treating with alkali and reducing the amount of polyester in the core yarn, the contact pressure between the fibers is reduced, resulting in extremely high repulsion. is given.

Further, by applying a silicone resin after the alkali treatment, excellent flexibility, smoothness, and repellency can be added to the fabric.

In applying the silicone-based resin, generally a dry method using a known silicone emulsion or a wet method using an Ariiso TS solution is applied.

The silicone resin may be an emulsion containing general silicone oil for textiles, but in order to improve durability against washing, it is preferable to use one containing a fiber crosslinking agent. Preferably used are blends of modified poly-14-lene emulsions, dimethylbolysiloxane nonionic compounds, high degree of polymerization organodilysiloxane nonionic emulsions, and high degree of polymerization organopolysoxane weak anion emulsions.

Such silicone-based resin has a dry weight of 0.2 to 3, O1 preferably o, s to 2.0 weight (wt) relative to the fabric.
)% range sK is given. 0.21
If the i content is less than 1%, flexibility and smoothness will be poor, and if the i content is more than 1%, the texture will deteriorate, so this is not unreasonable.

In addition, all of the silicone-based 1tlll are hydrophobic and impart excessive hygroscopicity to the resulting fabric.

The fiber mK used for the sheath thread may be made of polyamide, acrylic, etc., as long as it is a round + filament thread, but polyester may also be used.

When sheath AK and low-oriented polyester are used, the alkali treatment causes transverse cracks in the direction intersecting the forged brass axis, and the transverse cracks act as an anchor effect during the resin processing. This helps improve its durability.

Hereinafter, the present invention will be explained by giving examples.

(Actual example) 225 denier spun at a spinning speed of 1g00/min, 7!
A filament polyethylene terephthalate undrawn yarn and a 225 denier, 30 filament polyethylene terephthalate undrawn yarn spun at a spinning speed of 30 G01/min were interlaced using the root 1 shown in FIG.
l/cd) After applying, the elongation magnification is 1.58, D/Y
2.0 g.

Stretching and false twisting were performed at a temperature of 1110° C. and a processing speed of s9 om/min.

1300 T/M, 700 T/M to the obtained yarn
The fabrics shown in Table 1 were each woven with the addition of M, and the eastern part of the prefecture was woven under the conditions shown in No. 11%.

Table 1 Next, this fabric was subjected to 11 presets (180°C x 4i seconds) and then subjected to alkali treatment.

(Alkaline exchange weight loss) NaOH 11 degrees 3all/1 Bath temperature 98 degrees Celsius Weight loss time 30 minutes Weight loss rate 9.7% After the alkali treatment, the dyed fabric has a high degree of polymerization and is 1! It was dipped in silicone resin V OOS water S*, which is a weakly cationic emulsion containing siloxane as a main component, and then squeezed to a pick-up rate of 70% based on the weight of the fabric. Then, after drying at 100°C for 3 minutes, tgo°C
As a result of heat treatment for 30 seconds, the properties shown in Table 2 were obtained.

End 2 Table However, the bending repulsion was measured by JIS L1G9g, 6.20°s C method (loop compression method).

[Brief explanation of the drawing]

FIG. 1 is a diagram of a factory for manufacturing the false-twist layer structure yarn used in the present invention. 1...... Undrawn yarn for core yarn composition 2...
...Undrawn yarn for sheath yarn composition 8...False twisting device

Claims (1)

[Claims] 1. In the production of a fabric made of a core-sheath-like false twisted layer structure yarn in which sheath yarns are wound around a core yarn in an 8-twist direction and a 2-twist direction alternately reversed, at least A polyester multifilament yarn is used as the core yarn of the false-twisted layer structure yarn, and the false-twist layer structure yarn is subjected to an additional twist satisfying the following formula, then woven, and the woven fabric is treated with alkali. A method for producing a woven fabric comprising a yarn with a false-twisted layer structure. However, T... Number of twists per thread (T/m) De
... Thread denier of core yarn (d・) 1℃ relative to core yarn
The method according to claim 1, which uses a false twisted layer structure yarn consisting of sheath yarns having a yarn length greater than 50%. 1. In the production of a fabric consisting of a core-sheath-like pseudo-IIa layer structure yarn in which the sheath yarns are wound around the core yarn in the S-twist and 2-twist directions in reverse directions, at least the false-twist layer structure yarn is used. A polyester multifilament yarn is used as the core yarn, and the false twisted layer structure yarn is subjected to a weaving process that satisfies the following formula, and then woven,
1. A method for producing a woven fabric made of false-twisted layered yarn, characterized in that the woven fabric is treated with an alkali and then processed with a silicone resin. However, T...1+Number of twists per a (T/m) Dc
... Thread denier (d.) table of core yarn The method according to claim 3, wherein the silicone resin is a hydrophilic resin.