JPS60194180A - Treating solution for untwisted size free fabric and production of polyamide fiber for untwisted size free fabricby using said treating solution - 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 the improvement of a treatment liquid used in the process of manufacturing warp yarns for untwisted and glueless fabrics made of thermoplastic synthetic fibers, J
5 and a method for producing polyamide fibers for use in untwisted and glueless fabrics using the treatment liquid.

Conventionally, textile warp yarns made of thermoplastic synthetic tilim are
By twisting 200 to 300 times/IR before weaving and applying a natural or synthetic sizing agent, the warp yarns are given cohesiveness and smoothness, which prevents yarn cracking and fuzzing during weaving. The aim was to prevent this and improve weaving efficiency and textile quality.

In recent years, in order to streamline the weaving process, twisting and sizing of the warp yarns have been omitted, and instead, high-polymer compounds with good binding properties such as natural or synthetic waxes and sizing agents (hereinafter referred to as sizing agents) have been added to the spinning process. Many attempts have been made to write ``I4'' among them. For example, this is
1993 Publication, Special Publication No. 45-2768, Special Publication No. 1977
It is described in Japanese Patent Publication No.-6569, Japanese Patent Publication No. 50-33197, Japanese Patent Publication No. 77719-1974, etc.

In these conventional methods, the sizing agent is suspended or emulsified in water and subjected to the treatment as an Iζ water dispersion type treatment solution or a homogeneously dissolved suspension solution in an organic solvent, and the sizing agent is mainly used for undrawn yarn immediately after spinning. It was granted to

On the other hand, in the production of synthetic fibers, there is a direct spinning/drawing method in which the fibers are continuously stretched, heat-set, and then wound without being rolled up after spinning.
In recent years, industrialization of the Spin Draw method (Spin Draw method) has been progressing due to cost reduction due to process shortening. Synthetic fibers produced by IS using this direct spinning and drawing method have also been widely used for textiles.

In this direct spinning/drawing method, in order to prevent the package from collapsing due to drawing strain, a method of continuous heat setting after drawing is generally used. In addition, since polyamide fiber sets are especially sensitive to water, they tend to produce yarn unevenness due to water adhesion during the heat setting process, and when used as warp yarns for textiles, yarn unevenness tends to occur. It becomes a law and damages the quality of textiles. For this reason, in the direct spinning drawing method, a non-hydrous oil containing substantially no water, which is made by uniformly mixing compounds such as a smoothing component and an antistatic component, is usually used as the oil applied before stretching and heat setting. ing. Therefore, when applying a sizing agent to the undrawn yarn before the drawing heat treatment in the direct spinning/drawing method, it is practically impossible to apply it as an aqueous dispersion type treatment liquid.

Therefore, when applying a sizing agent to the undrawn yarn using this direct spinning/drawing method, fq may be applied as a solution in which the sizing agent is uniformly dissolved in an organic solvent.

However, most waxes and sizing agents used as sizing agents require rotation to uniformly dissolve them in an organic solvent, and even if they can be uniformly dissolved, (the fI solution is Since the viscosity becomes extremely high, a large resistance is generated during oil supply, and the yarn swings significantly after the oil supply part, resulting in frequent yarn breakage, making it impossible to wind the yarn in a stable manner.

As described above, in the conventional method, it is practically impossible to add a sizing agent to 4"J LJ at the undrawn yarn stage of the direct spinning and drawing method for producing water-sensitive synthetic fibers such as polyamide fibers.
It was not possible to obtain polyamide fibers for use in untwisted and glueless textiles by the direct spinning and drawing method. vinegar.

Conventionally, polyamide fibers for untwisted and glueless textiles to which a sizing agent has been added during the spinning process have had to be produced by a two-split spinning method in which the yarn is wound up as an undrawn yarn and then stretched.

Therefore, as a result of intensive research on the above-mentioned problems, we developed a treatment solution for non-twisted and glue-free fabrics that can be applied even in the direct spinning and drawing method of polyamide fibers. It is sufficient to use a water-containing treatment liquid;
Wax containing at least a polyolefin compound as a main component that is insoluble in organic solvents at room temperature is suitable as a sizing agent because it can be easily finely dispersed in an organic solvent and has a good focusing effect; We have discovered that it is possible to improve the quality of woven fabrics made from S-twisted polyamide fibers for non-sizing fabrics by direct spinning and drawing using a treatment liquid in which the wax is minutely dispersed, and the present invention I came to do this.

In other words, the main object of the present invention is to provide a treatment liquid for untwisted and glueless fabrics that is suitable for imparting ζj to yarns at the undrawn yarn stage; A direct spinning/drawing method for polyamide fibers that allows continuous spinning of yarn for untwisted, glue-free textiles for long periods of time without inducing yarn breakage, with no yarn quality unevenness and improved fabric quality. The goal is to provide the following.

In order to achieve this object, the present invention provides a non-twisted wax that is made by finely dispersing a wax containing at least a polyolefin compound as a main component in an organic solvent that does not substantially dissolve the wax and does not contain substantially water. This method consists of a treatment liquid for starched fabrics, and a method for producing polyamide M fibers for untwisted, starch-free fabrics by applying the treatment liquid to polyamide fibers before heat setting in a direct spinning drawing method.

The wax used in the treatment liquid of the present invention is a wax whose main component is a poly(A) fin-based compound, such as microcrystalline wax, polyethylene wax, propylene wax, or copolymerized polyolefin whose main constituent unit is ethylene. It is a wax whose main component is at least a polyolefin compound such as a base wax, a polyolefin or a derivative thereof, such as polybutene partially oxidized polyethylene, polyoxyethylene added polyethylene, etc. Its properties are not particularly limited other than that it is substantially insoluble in the organic solvent used as a dispersion medium, but it has a degree of polymerization necessary for appropriate microdispersion in the organic solvent, and preferably an appropriate amount of functional groups. Offal is good. For example, the degree of polymerization is preferably 500 to 5,000 in terms of molecular weight. Examples of the functional group include a carboxyl group in the case of partially oxidized polyethylene, and the functional group preferably has an oxidation degree of 10 to 30.

This wax can sufficiently impart the necessary cohesiveness and smoothness to the warp yarns, and can be easily uniformly and minutely dispersed without dissolving in the organic solvent that is the dispersion medium. It is suitable as a sizing agent to be used by dispersing it in the liquid.

In the treatment liquid of the present invention, it is necessary that the wax is finely dispersed in an organic solvent, so the organic solvent should be a compound that does not substantially dissolve the wax at room temperature. It is necessary to select and use them depending on the type. Furthermore, for thread-spinning properties, it is preferable that the compound has an appropriate viscosity that is not too high. Generally, the viscosity of a dispersed system increases less than that of a dissolved system, but in order to obtain good silk-spinning properties, it is desirable that the viscosity of the organic solvent used be as low as possible.

Suitable organic solvents include monool alcohols,
Mineral oil, kerosene, -basic acid ester, di-salt! Triacid ester, glycol ester, polyhydric alcohol ester,
Examples include, but are not limited to, isopolybutene, isoparaffin, cyclic paraffin, and the like. Its viscosity is 2
~60 centivoise is preferred.

In order to disperse the wax into appropriate microparticles and create an emulsion or suspension, the organic solvent must be selected according to the type of wax so that the interaction between the wax and the organic solvent is at an appropriate level. It is necessary, but furthermore, if necessary,
A dispersion aid may also be added.

For example, as an organic solvent (dispersion medium) for partially oxidized polyethylene wax with a molecular ff of 1,500 to 50,000,
Redwood viscosity [30 seconds of mineral oil and molecules m200~1
000 polyethylene glycol (hereinafter abbreviated as PEG) fatty acid ester is preferable, and for polybutene, an ethylene oxide adduct of mineral oil with a redwood viscosity of 50 seconds and castor oil (hereinafter abbreviated as EO adduct) is preferable. (10 to 30 moles of EO added) is preferable, and αΔrefine wax is preferably a sorbitan alkyl ester of isobutyl balmitate and polyoxyethylene (hereinafter abbreviated as POE) (10 to 25 moles of EO added, an alkyl group). carbon atoms (12 to 18) are preferred.

As a dispersion aid, PEG (molecular ff1300-60
0) fatty acid ester (the number of carbon atoms in the fatty acid residue is 11 to 1)
8), sorbitan alkyl esters to which 10 to 25 moles of EO have been added (alkyl group has 12 to 18 carbon atoms), and mono-, di-, and triester of sorbitan alkyl esters.

In addition to the wax and organic solvent, the treatment liquid may contain, if necessary, third components necessary for smooth yarn spinning, warping, and weaving, such as a smoothing agent, an antistatic agent, and a preservative. Compounds that are generally used as components of spinning process oils may also be blended. The organic solvent that is a dispersion medium for wax may also serve as the third component. Note that the addition of these third components may block the fine dispersion of wax and cause the wax to coagulate and separate, or conversely, promote the dissolution of the wax in the dispersion medium, causing a rapid increase in viscosity. It is necessary to use a compound that does not cause viscosity.

Smoothing agents that can be added as a third component include:
For example, mineral oil with a redwood viscosity of 45 to 150 seconds, monobasic acid ester, dibasic acid ester, polybasic acid sprue, polyhydric alcohol ester, ether ester, etc. with a viscosity of 100 centiboise or more at room temperature, spinning Compounds commonly used as base components of oil agents can be mentioned.

-1) Antistatic agents include sulfonate compounds, sulfate compounds, phosphate compounds, 7Ei
sapon compounds, amphoteric compounds of the betaine and imidacillin type,
Examples include surfactants that are commonly used as a component of spinning oils, such as anion-cation complex compounds and quaternary ammonium salts of 7Jthian. Note that the above-described anion-cation complex compounds and cation quaternary ammonium salts can also be used as preservatives.

The proportion of the wax to be mixed in the processing solution is such that it is possible to achieve the desired weaving and reeling without twisting or sizing, that is, it must be at least 2.5% by weight with respect to 1 liter of processed wave pattern ff. , preferably 3 to 20% by weight. If the amount of wax blended is too small, the desired effect of improving weavability will not be achieved. On the other hand, if the number of J is too large, fine dispersion in the organic solvent becomes difficult in VA, and the frictional force between the yarns decreases, which prevents the spun-up package from collapsing, which is not preferable.

As described above, the treatment liquid of the present invention consists of a wax, an organic solvent, and optionally added dispersion aids and third components (smoothing agent, ?1) antistatic agent, antistatic agent, etc. It is a mixture and can be used as is, for example,
Wax, an organic solvent, and the above-mentioned components added as necessary are mixed, heated, cooled, and processed to form a processing liquid in which the wax is finely dispersed and becomes emulsified or suspended. can be obtained.

The treatment liquid of the present invention is generally applied to the undrawn yarn spun in the spinning process using the surface spinning drawing method before it is wound around the first take-up roller.

However, it can also be applied between the first-stage take-up roller and the stretching roller, or between the stretching roller and the winding machine. (j) 5 during the spinning process using other spinning methods (for example, high-speed spinning).

There are no restrictions on the method of applying this treatment liquid, for example,
! I! A roller lubrication method in which the thread is brought into contact with the surface of a rotating roller made of ceramic or the like whose bottom surface is immersed in a liquid oil tank.An oil supply hole is provided in the guide made of ceramic or the like, and the processing liquid is sent in contact with the thread using a pump. A general method such as the guide lubrication method may be used. In addition, multi-stage lubrication such as 2-stage or 3-stage,
This is preferable for uniform adhesion.

The amount of A4 applied to the yarn is as a treatment liquid, To,
It is sufficient if it is about 3 to 3.0 weight percent.

The treatment solution of the present invention can be applied to melt-spun synthetic fibers in general, but is particularly suitable for application to polyamide fibers that are sensitive to water. , polyε-N[:1 lactam (nylon 6), polyhexamethylene adipamide (nylon 66), or components of these nylon 6.06 and other copolymerizable cyclic lactams , dicarboxylic acids, diamines, etc., may be mentioned.

That is, the treatment liquid of the present invention is continuously stretched after melt spinning.
In the direct spinning and drawing method of heat-setting and winding polyamide fibers, it is preferable to apply it to the fibers before heat-setting, and in this case, the polyamide fibers are spun, for example, by the following manufacturing method.

The yarn is melted with a normal melt spinning machine such as Prefushi 1 Fumel 9 type or extruder type and spun from the spinning hole.
It is taken up at a speed of 500-5000 m/min, immediately stretched without winding, and then stretched at a speed of 100-200 m/min.
It is heat-set at a temperature of ℃ and then rolled up. The stretching ratio at this time may be determined according to the take-up speed so that the elongation of the drawn yarn after winding and 15 knots becomes a predetermined value (generally 20 to 50%). Heat setting may be performed by heating the final stretching roller. Stretching may be made easier by heating with a hot plate or the like in the stretching zone;
Multi-stage stretching may be performed using two or more stretching rollers.

This yarn spinning method lowers the shrinkage rate of the wound polyamide yarn, prevents the package from being crushed and has a poor winding appearance, and reduces the weaving process due to shrinkage after it is made into a fabric.
In order to achieve this, it is necessary to heat set after stretching.

As described above, the treatment liquid of the present invention is particularly suitable for use in the direct spinning/drawing method of polyamide fibers, but it can also be used in other silk spinning methods such as high speed spinning. However, in the two-split spinning method in which the melt-spun undrawn yarn is once wound up and drawn, the processing liquid (rolling of the applied undrawn yarn)
This is not preferable because the package collapses significantly during winding, making it difficult to stably spin and wind the yarn.

The yarn to which the treatment liquid of the present invention has been applied is warped by a conventional method without twisting or sizing.
-Tardien 1-loom etc. are used for fine thread and weaving.

By using the treatment liquid of the present invention, it is possible to impart a sizing agent necessary for no-twist and no-sizing to the wX fiber in the spinning process,
In particular, when used in the direct spinning and drawing method of polyamide S navy blue, it is possible to stably reel the yarn without inducing yarn breakage during yarn spinning, and to produce high-quality untwisted and untwisted T# yarn without uneven yarn quality. It is possible to obtain yarn for machinery, polyamide fibers for untwisted and glueless textiles by the conventional two-split spinning method, and homogeneous, high-quality canine textiles (1).

Hereinafter, the present invention will be specifically explained with reference to Examples.

Example 1 Nylon 6 polymer was supplied to an extruder-type melt spinning machine, melted at 270°C, spun out through 17 spinning holes, and taken back to the rollers at 1000 n+/min.
It was stretched and heat-set under the conditions of a stretching ratio of 3 times and a heat-setting Tfil JI of 1170° C., and a nylon 6 yarn of 70 denier and 17 filaments was spun.

At this time, in front of the take-up roller, a treatment liquid consisting of the following composition was applied to the yarn at 1% by weight, and guide oil was applied to the yarn.
gave. The treatment liquid A was prepared by mixing each component, heating it to 100° C. while stirring, and then cooling it to obtain a treatment liquid 111j in which the wax was finely dispersed at room temperature. Treatment liquid B was an aqueous dispersion in which wax was dispersed in water, which was obtained by heating and mixing components other than water and then uniformly dispersing the mixture in water. Processing liquid C is a solution in which wax is dissolved in 41 solvent, which is prepared by mixing and stirring each component.
= .

The obtained nylon 6 threads were used as warp threads by warp-pin operation in the usual manner without twisting with glue (1G), woven in a water jet loom, made into taffeta, and dyed. The results obtained are shown in Table 1.

Composition of treatment liquid (invention) Partially oxidized polyhydrene (molecular weight 2000, degree of oxidation 15) 10 Paraffinic mineral oil (redwood viscosity 30 seconds) 40 POE sorbitan alkyl ester (E010-201: Louis Q additive) , C12-15 alkyl group〉0 isoprobyl myristyrate 35 sodium]] OF lauryl ether bosphate ([0
5 Composition of treatment liquid B (comparative example of water-dispersed type) Partially oxidized polyethylene (molecular fri 1500.1 [13) 3 Paraffinic mineral oil (redwood viscosity 60 seconds) 9 Matcha alcohol 5 mol adduct of EO 6 Glycerin mono-A leate 1 POE lauryl ether bosnoate Na salt 1 Water 80 Composition of treatment liquid C (comparative example of soluble type) fl'1fii part polybutene part ribene 0) 15 Paraffinic mineral oil (redwood Viscosity: 50 seconds) 35 EO 15 mole adduct of castor oil 20 IsoΔctyl sdaleate 27 POE lauryl ether phosphate Na salt 3 First surface treatment liquid Treatment liquid During spinning Weavability Fabric No., Viscosity of thread breakage Dyeing method centiboise Times/ton % Point △ 15 0.9 98 9 B 2.5 1.1 98 2 0 120 838 3 The viscosity of the treatment liquid is B type viscosity manufactured by Tokyo Giki Co., Ltd. at a liquid temperature of 30°C. Measured using a meter.

Yarn breakage during spinning is expressed as the number of yarn breakages per ton of Norilon 6 polymer.

1lI81 Mechanical performance is the value of the real operating rate relative to the theoretical operating 1fJI rate expressed in %, and the closer it is to 100, the higher the
The lability is excellent.

In addition, the dyeing method is classified into 10 stages, with 10 points for no dyeing method, and 1C for the dyeing method of the dyed taffeta. A score of 7 or above is a pass, and a score of 5
A score of ~6 is a level that requires attention, and a score of 4 or less is a failure.

As is clear from the results in Table 1, when the treatment liquid △ of the present invention is used, there is no yarn shaking on the rollers after the oil supply roller due to its low viscosity, so there is less yarn breakage during spinning. Since there is no heat fixing method on a heat fixing roller, a warp yarn for a non-twisted, non-sizing fabric without uneven yarn quality was produced. Therefore, it was possible to produce a woven fabric with good weavability (no stalls caused by warp yarns) and excellent quality.

On the other hand, when water dispersion type processing liquid B is used, 1! ) Because the thread quality of the warp threads was large, the fabrics were defective due to many dyeing methods. In addition, processing liquid C dissolved in 11 solvents
In the case of (-), the viscosity was too high, so the yarn Jffl on the first-stage take-up roll was large (-The yarn swayed greatly on the heat-fixing roller, and yarn breakage occurred frequently.

In addition, by reducing the amount of partially oxidized polyethylene and increasing the amount of paraffinic mineral oil in treatment liquid A, a dispersion type non-aqueous treatment liquid with a wax content of 2.0% by weight (treatment liquid D), and using this treatment liquid, yarn spinning, weaving, and dyeing of polyamide fibers were carried out.
Repeat as above. In this case, there was a lot of rawness due to yarn breakage and fluff during weaving, and the weavability was as low as 60%.

Example 2 Norilon 66 polymer was supplied to an extruder type melt spinning machine, melted at 295°C, spun out from 12 spinning holes, applied to the treatment solution of Example 1, and then spun for 1000 m.
Immediately after taking it over to an O-ra at a stretching ratio of 3.2 times and a heat setting temperature of 180°C, the Nylon 66 drawn yarn (sample thread 1) was stretched at a stretching ratio of 3.2 times and a heat setting temperature of 180°C. 7.

The package form is good, the amount of treatment liquid attached to the yarn is 0.91%, the elongation of the yarn is 42%, and the fresh water shrinkage rate is 95%.

On the other hand, as a comparative example U1. After melt spinning in the same manner as described in Example 1, J! 1! Apply liquid B and speed at 1000 m/min
to obtain an undrawn yarn, and then wind the undrawn yarn with a normal
A nylon 66 drawn yarn (Sample Yarn 2) having the same elongation as described above and a fresh water shrinkage rate of 13% was obtained by drawing with a twister. The amount of treatment liquid adhered to the yarn was 0.94ffi%.

These drawn yarns of sample yarn 1.2 were warped into warps in the same manner as in Example 1, woven in a tarjet loom, and then dyed with an acid dye.

The fabric using sample yarn 1 had a dyeing method evaluation of 9 points and was a high-quality fabric with almost no dyeing method, but the fabric using sample yarn 2 had a dyeing method evaluation of 7 points and was a high-quality fabric with a dyeing method evaluation of 7 points. In addition, there were some sink marks caused by shrinkage spots of the fibers, and the quality of the fabric was slightly inferior.

In addition, after winding the undrawn yarn, in the above-mentioned two-split spinning method, the same spinning as described above was repeated using the treatment liquid A of Example 1 as the treatment liquid that gave A1 to the undrawn yarn. However, the package collapsed during winding of the undrawn yarn, and spinning could not be continued.

Patent applicant: Toshi Co., Ltd.

Claims (3)

[Claims] (1) A wax containing at least a polyolefin compound as a main component is finely dispersed in an organic solvent that does not substantially dissolve the wax at room temperature and does not contain water, and Wax content ■ is 2.
A treatment liquid for non-twisted and non-sizing fabrics characterized by having a weight content of 5% or more. (2) The treatment liquid for untwisted and glueless fabrics according to claim 1, wherein the polyolefin compound is a polyolefin derivative having a functional group. (3) In the direct spinning/drawing method in which polyamide fibers are melt-spun, then continuously stretched, heat-set, and then wound, a wax containing at least a polyolefin compound as a main component is used, in which the wax is substantially melted at room temperature. , a treatment liquid for untwisted and glueless textiles, which is finely dispersed in an organic solvent that does not substantially contain water, and has a wax content of 2.5% by weight or more based on the entire liquid; A method for producing polyamide fibers for use in untwisted, glueless textiles, which comprises applying am to the polyamide am before heat setting.