JPH0684591B2 - Weft for air jet loom - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention uses a filament yarn for AJ
The present invention relates to a treating agent for supplying a highly suitable weft yarn when weaving with L and its attached weft yarn.

[0002]

2. Description of the Related Art AJL is a water jet loom
It has attracted attention as an innovative weaving machine with high productivity similar to that of (WJL) and is rapidly spreading in recent years because it is more suitable than WJL for cellulosic filament yarns such as acetate and rayon whose lubricating performance is deteriorated.

Generally, cellulose-based filament yarn is AJ
In the case of weaving with L, the sizing treatment is usually performed on the warp as in the conventional method, and unlike WJL, the weaving is performed in a dry state, so that it is exceptional compared to the weaving with a conventional weaving loom. Although there is no major problem, the weft yarn is a special method that uses an air jet, so if the normal production yarn is used as it is, the operation rate of the loom or the quality of the fabric will deteriorate. There is.

The deterioration of the operating rate and the quality is caused by the fact that the weft yarn is difficult to ride on the air jet which is the carrier fluid and cannot be put in at the required speed, or the weft yarn is disturbed by the air jet and entangled or single yarn breakage occurs. However, such a problem occurs because the air jet has a weaker conveying force than the non-diffusible water jet, so the conveying force fluctuates due to variations in the weft form and its length direction. Caused by. Such ease of transportation by an air jet is a special performance required only for AJL wefts, which is generally called flying property,
It can be said that a weft yarn highly suitable for AJL is a yarn that has good flying properties, that is, a weft yarn that can be stably beaten at a low air pressure and a constant pressure. In particular, in pursuit of high productivity in AJL, improvement of weft flying performance is one of the most important problems.

Conventionally, for this purpose, a treating agent has been generally used which contains a mineral oil type smoothing agent as a main component, and a nonionic activator and an anionic activator as an emulsifier and an antistatic agent. . This mineral oil, which is the main component, is effective in reducing the frictional resistance between the fiber and the friction body (guide, storage drum, etc.), and is particularly smooth using mineral oil with a low carbon distribution (low viscosity of around 5.7 cst). At present, it has achieved the purpose of improving productivity. However, in the case of such a treating agent containing a mineral oil as a main component, it is wound on cheese after refueling in the spinning process, but during winding up and during the lapse of time from the weaving process to the weaving process, especially with the volatilization of some residual acetone. A part or a considerable part of the low-viscosity mineral oil component of the surface layer of cheese is volatilized, resulting in a treatment agent that is out of balance from the original treatment composition and adheres to the yarn. Since the adhesion levels of the treatment agents on the inner and outer layers are different, this causes friction fluctuations in the post-processing step during weaving, which is a major drawback during AJL weaving.
(Looseness, fluff knots, etc.) occur and the quality of the fabric is degraded.

[0006]

The present invention provides a weft yarn for AJL which does not have the above-mentioned drawbacks.

[0007]

The present invention has 9 to 1 carbon atoms.
70 to 50% by weight of liquid paraffin of 8 and 30 to 50% by weight of liquid paraffin having 19 or more carbon atoms, and 86
80 to 90 parts by weight of liquid paraffin (I) having a viscosity of 5.7 to 8.7 centistokes at 8 ° F. and 8 carbon atoms
5 to 15 parts by weight of a compound (II) in which the terminal hydroxyl group of the ethylene oxide adduct of alcohol of 18 to 18 is ester-capped with an aliphatic carboxylic acid of 8 to 18 carbon atoms, 8 to 1 carbon atoms
8. AJL comprising a weft treating agent for an air jet loom (AJL) consisting of 5 to 10 parts by weight of alkyl phosphate ester amine salt (III) of No. 8 and 1.0% to 2.5% of the weight of the fiber. It relates to weft threads.

The liquid paraffin of the component (I), which is the main component of the treating agent of the present invention, is a high-grade liquid paraffin containing substantially no aromatic compound, and its viscosity range and carbon distribution are AJL. Since it is closely related to weavability, the viscosity range is 5.7 to 8.7 cst / 86 ° F, and the carbon distribution is C _{9 to} C ₁₈ 70 to 50% by weight, C _{19 to} 30%.
-50% by weight, with a viscosity range of 6.5-8.5
In cst / 86 ° F, yet carbon distribution, C ₉ ~C ₁₈ 65~
Particularly preferred is 55% by weight, or C ₁₉ or more and 35 to 45% by weight.

The relationship between carbon distribution and performance is as follows.
The C _{9 to} C ₁₈ portion has a low molecular weight due to the low degree of polymerization, and therefore has a low viscosity as liquid paraffin, and therefore,
Since the viscosity of the entire treating agent is lowered, the diffusing force of the treating agent on the fibers can be increased to enhance the uniform adhesion and reduce the frictional resistance. On the other hand, the volatility becomes large, the adhesion level of the treatment agent on the inner and outer layers of the cheese changes, and the friction change occurs in the post-processing step, which lowers the weaving efficiency and the quality of the fabric. On the other hand, C ₁₉
Since the above portion has a low volatility, the volatilization from the corn surface layer after spinning is reduced, and it is possible to obtain a uniform permeability in the post-processing step including weaving in AJL.

However, the viscosity is 5.7 to 8.7 cst / 86 ° F.
Even within the range, the C _{9 to} C ₁₈ portion in the liquid paraffin is 7
If it exceeds 0% or contains C ₉ or less, the viscosity of the treatment agent decreases, and the treatment agent diffuses on the fiber.
Although it is convenient in terms of uniformity of adhesion, the volatility becomes extremely large, while the portion of C ₁₉ or more becomes relatively small, so that the performance in the post-processing step deteriorates, which is not preferable in practice. On the contrary, when the C _{9 to} C ₁₈ portion is less than 50%,
Since the amount of C ₁₉ or more is relatively large, the opposite effect described above occurs and the yield of spinning (spinning, twisting, etc.) is reduced, which is not preferable.

In the treatment agent formulation according to the present invention, it is most preferable to use 80 to 90 parts by weight of the liquid paraffin as the component (I). Next, a compound in which the terminal hydroxyl group of the ethylene oxide adduct of an alcohol having 8 to 18 carbon atoms, which is the component (II), is ester-capped with an aliphatic carboxylic acid having 8 to 18 carbon atoms will be mentioned.

The alcohol having 8 or more carbon atoms to be used in the present invention is not particularly limited, but it is convenient when the hydrophilic part formed by adding ethylene oxide is used as an activator and the one which is liquefied is adjusted as a treating agent. Is good
From that point, if the primary alcohol of linear, C ₁₀ -C
₁₂ (decyl alcohol, lauryl alcohol) is desirable, and if it is a side chain alcohol, C ₁₀ -C ₁₈ (isodecyl alcohol, isohexadecyl alcohol, instearyl alcohol, etc.) is desirable. Especially from the aspect of refining of the acetate treatment agent, trade name Dobanol (made by Shell Chemical Co., Ltd.), Oxocol (made by Nissan Chemical Co., Ltd.), Diadol
An oxo synthetic alcohol such as (manufactured by Mitsubishi Kasei Co., Ltd.) or a C ₁₀ -C ₁₆ secondary alcohol (trade name: Targitol: manufactured by Union Carbide, softanol: manufactured by Nippon Shokubai Kagaku Kogyo) is preferable.

Generally, a nonionic ether type activator obtained by polymerizing ethylene oxide in alcohol is used. In that case, devitrification of acetate is prevented by lowering the degree of polymerization of ethylene oxide. Although measures have been taken, they are not sufficient, and there are problems in cooling stability of the treating agent, friction performance and the like.

The terminal hydroxyl group of the ethylene oxide adduct of the alcohol, which is the component (II) according to the present invention, is replaced with C ₈
By using a compound capped with an aliphatic carboxylic acid of up to C ₁₈ , the drawbacks of the above nonionic activator are prevented. The amount of ethylene oxide to be added is not particularly limited and can be varied within a wide range, but an ethylene oxide adduct of 3 to 10 moles relative to 1 mole of alcohol is particularly preferable. Furthermore, carbon number 8-18
Of aliphatic carboxylic acids of C ₈ -C ₁₈ which block the terminal hydroxyl groups of the alcohol ethylene oxide adducts, linear or carboxylic acids, saturated or unsaturated having a side chain, eg caprylic acid, lauric acid, oleic Acid, isostearic acid, etc., or a mixed fatty acid containing them as a main component can be used. Incidentally, as (II), scouring,
Considering friction characteristics and the like, in the treatment agent formulation of the present invention,
An addition amount of 5 to 15 parts by weight is the most desirable range.

Next, the component (III) having 8 to 18 carbon atoms
The alkyl phosphate ester / amine salt will be explained.
When using a treatment agent for acetate AJL in a non-aqueous system, the first appropriate condition is stability of the treatment agent (especially low temperature stability), that is,
It has good compatibility with base oil. From this point, the anionic activator used for the purpose of antistatic is also
Sulfuric acid ester-based, sulfonate-based, and fatty acid-based are incompatible, and their metal salts are particularly unsuitable.

That is, when considering a non-aqueous treating agent exclusively for the weaving of acetate AJL, a C ₈ -C ₁₈ alkyl phosphate ester / amine salt is preferable. The alcohol used is
It is preferably liquid at room temperature, and octyl alcohol, decyl alcohol, lauryl alcohol and the like can be used. Especially, alcohols by the oxo method such as dovanol, oxochol, and diadol, and C _{12 to} C ₁₅ side chain alcohols, for example, Most preferred are Taditol, Softanol and the like. The amines used are not particularly limited, but water-insoluble liquid amines such as tributylamine and dibutylethanolamine are most desirable.

When performing acetate AJL weaving, the electrostatic characteristic is that when the yarn is discharged from the weft storage drum,
It is desirable to generate static electricity of 200 to 500 V near the storage drum. This is because the yarn slightly swells due to the generation of static electricity and it is easy to ride on the air jet. In this case, if the static electricity is excessively generated, the yarn may be excessively bulged, causing fluff, yarn breakage, and the like to generate fluff knots. Therefore, it is desired that the static electricity generation amount is appropriate.

For that purpose, it is necessary to appropriately control the amount of the C _{8 to} C ₁₈ alkyl phosphate ester / amine salt. However, since this amount of static electricity is also related to the amount of relative base oil, in the treatment agent formulation of the present invention,
The addition amount of 10 to 5 parts by weight is the most desirable.

The method of treating the acetate yarn with the treating agent according to the present invention is not particularly limited, but it is preferable to treat with a non-aqueous system. Further, using the treating agent of the present invention, A
When producing acetate filament yarn for JL weft,
The amount of the treatment agent attached to the fibers is 1.5-2%. Usually, a 2 to 3% treating agent is usually attached to the acetate filament yarn for the purpose of improving the spinning property and the post-process passability. Since the treatment agent of the present invention has improved even adhesion to the acetate filament yarn, the adhesion amount can be reduced, and the adhesion amount is 2%.
It can be:

However, if the adhesion amount is 1.0% or less, fluffs, loops, and yarn breakage during corn winding frequently occur, which is not preferable, and it is optimum in consideration of yarn yield and economic efficiency of the treatment agent. Is 1.5 to 1.7%.

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

EXAMPLES Example I and Comparative Example I In the weaving test in the examples of the present invention, Tsuda Koma ZA100 was used as the AJL model, and warp diacetate filament B75 / 21 (yarn density: 100 yarns / inch, sizing yarn). , Weft diacetate filament dull 75/21
(Yarn density: 80 threads / inch, wound cone), 12 woven width
A 2 cm taffeta was woven at a rotation speed of 500 rpm. The air pressure required for the beating of the cone surface layer and the inner layer is the air pressure of the injection nozzle (main nozzle) that is necessary to obtain an appropriate flight speed in AJL operated at a predetermined number of revolutions with the surface layer of the cone. The results measured on the inner layer. More specifically, the conveying nozzle (sub-nozzle) air pressure is kept constant at 3.5 kg / cm ² , and the weft edge arrival angle is 225 to 225.
The pressure of the main nozzle is 230 degrees. The edge reach angle corresponds to the basic operation of the loom, which is beating, opening, wefting, and beating, for one revolution of the crankshaft (360 degrees).
When the other beating angle is represented by an angle with the beating angle of 0 degree, the weft yarn is jetted from the main nozzle, conveyed by the sub-nozzle, and reaches the cloth edge on the opposite side.

In the embodiment of the present invention, the angle at which the weft starts to be jetted from the main nozzle is set to 90 degrees, and at this time, the most preferable edge angle is 225 to 230 degrees.
Was adjusted. The air pressure for weft driving is set to a constant value during weaving, but this value is usually set to the appropriate value for weft driving in the part of the weft cone that is most difficult to fly, and is usually set according to the surface layer of the cone. However, when the difference in flight property between the surface layer and the inner layer is large, the inner layer flies too fast, which may cause a loom stop or an increase in product defects due to entanglement or the like.

[0023] For this reason, the difference between the appropriate air pressure between the surface layer and the inner layer is preferably 0.3 kg / cm ² or less, a 0.5 kg / cm ² or more, a stable operation is possible . Further, if the setting value of the jet nozzle is too high, the single yarn breakage frequently occurs due to the impact applied to the single weft yarn, which causes a stop of the machine and an increase in defects, and thus is preferably low. In the case of this embodiment, it is 2 kg. / Cm ² or less. From the above, in this embodiment, the proper air pressure on the surface of the cone is 2 kg / cm ²
Those having the following values and a difference between the surface layer and the inner layer of 0.3 kg / cm ² or less were judged to be highly weft-appropriate treating agents.

(I) Example of improper liquid paraffin viscosity and carbon number distribution: Component I Liquid paraffin: Viscosity: 5.5 cst / 86 ° F Carbon analysis: C _{9 to} C ₁₈ / C ₁₉ or higher = 75/25 Gas chromatograph The results of the graphic analysis are shown in Table 1. Component II Nonionic Activator: POE (3) Terditol Lauryl Ester Component III Anionic Activator: Dovanol Phosphate Dibutylethanolamine Salt

[0025]

[Table 1]

(2) Example of improper liquid paraffin viscosity and carbon number distribution: Component I liquid paraffin: viscosity: 4.4 cst / 86 ° F carbon distribution: C ₇ or less / C _{8 to} C ₁₈ / C ₁₉ or more = 20 / 60/20 gas chromatographic analysis results are shown in FIG. Ingredient II Nonionic activator: POE (3) Softanol / lauryl ester Ingredient III Anionic activator: Diadol phosphate dibutylethanolamine salt

[0027]

[Table 2]

(3) Example in which liquid paraffin having an appropriate viscosity and carbon distribution range is used and the compounding ratio of components I to III is changed: component I liquid paraffin: viscosity: 7.6 cst / 86 ° F carbon distribution: C ₉ the -C ₁₈ / C ₁₉ or higher = 60/40 gas chromatographic analysis results shown in FIG. Ingredient II Nonionic activator: POE (3) Terditol lauryl ester Ingredient III Anionic activator: Dovanol phosphate dibutylethanolamine salt

[0029]

[Table 3]

(4) Example in which liquid paraffin having an appropriate viscosity and carbon distribution range is used and the compounding ratio of components I to III is changed: component I liquid paraffin: viscosity: 8.0 cst / 86 ° F carbon distribution: C ₉ -C ₁₈ / C ₁₉ or more = 50/50/20
FIG. 4 shows the results of the gas chromatography analysis of -60/20. Ingredient II Nonionic activator: POE (3) Softanol / lauryl ester Ingredient III Anionic activator: Diadol phosphate dibutylethanolamine salt

[0031]

[Table 4]

(5) Liquid paraffin having a high viscosity and an improper carbon number distribution Example: Component I Liquid paraffin: Viscosity: 9.5 cst / 86 ° F Carbon distribution: C _{9 to} C ₁₈ / C ₁₉ or more = 40/60 The gas chromatography analysis results are shown in FIG. Ingredient II Nonionic activator: POE (3) Terditol lauryl ester Ingredient III Anionic activator: Diadol phosphate dibutyl ethanolamine salt

[0033]

[Table 5]

The measurement conditions of gas chromatography for measuring the carbon distribution of liquid paraffin are as follows: GLC condition column: L = 1 m ID = 3 mm Packing silicone OV-17 (0.75%) support Flomosolve W (80 to 100 mesh) Column temperature 70 ° C. → 250 ° C. 10 ° C./min Injection (Det) temperature 300 ° C. Detector FID Carrier gas: He

Example II and Comparative Example II Among the treating agent components of Example I, the portion of the nonionic activator was examined. Liquid paraffin was prepared in Example I- (3).
The same as that used for was used. Evaluation is in Example I
In addition to the evaluation, the amount of static electricity generated and the scouring property were examined. In the examples, the amount of static electricity generated was determined by using the oil-treated yarn as the friction body.
The static electricity amount generated on the friction body was measured with a Kasuga current collector when running while rubbing against a (mirror surface chrome cylinder, φ15 mm). The results are shown in Table 6. In Table 6, the ∘ mark indicates the amount of generation of -200 to -500 V, and the X mark indicates the case of generating other amount.

Next, the scouring property was calculated as a residual fat rate from the amount of the oil agent adhered before and after scouring the oil agent-treated yarn with hot water.
For scouring, 10 g of the sample yarn that has been demolded is used and warm water at 45 ° C
Refining agent to 0 ml (trade name SSK-4; manufactured by Matsumoto Yushi-Seiyaku Co., Ltd.)
(Acetate scouring agent) Add to a scouring solution containing 2 g / l and hold for 10 minutes with gentle stirring. After a predetermined time has elapsed, the sample yarn is taken out and washed with running water for 5 minutes. In Table 6, the symbol ◯ indicates that the residual fat ratio is less than 5%, and the scouring property is good, and the symbol x indicates that the scouring property is 5% or more, and the scouring property is poor. Component I Liquid paraffin: Viscosity: 7.6Cst / 86 ° F carbons-distribution: C ₉ ~C ₁₈ / C ₁₉ or higher = 60/40 component II a non-ionic agents: POE (3) Tergitol lauryl ester or POE (5) Softanol ether Component III Anion activator: dovanol phosphate dibutylethanolamine salt

[0037]

[Table 6]

Example III and Comparative Example III Twenty-seven kinds of treating agents were selected from the treating agents of Example I and Comparative Example I, and acetate filament dull 75/21 was spun as a spinning oil agent to obtain a corn having a winding amount of 3 kg. A taffeta having the same product number as that of Example I and Comparative Example I was produced. In the examples and comparative examples, the air pressure of the jet nozzle was set to a pressure at which the arrival angle of the surface layer of the weft cone using each treating agent was 225 to 230 °. In the taffeta production process, the number of stopped looms due to the warp factor and the number of stopped looms due to the weft factor were measured and shown in Table 7 together with the weaving conditions.

The stop factor of the warp factor and the weft factor of the loom is the number of stoppages that occur during continuous weaving under certain conditions, the warp factor (warp fluff, warp breakage), the weft factor (weft yarn). (Tangles, flight delays, etc.), and the total number is calculated by dividing the number of stopped machines due to the warp factor or the number of stopped machines due to the weft factor by the operating time, and expressed as one machine / number of times per hour. In order to continue stable operation, it is preferable that both the weft and warp factors be 0.2 times / unit / hour or less. The number of weft defects is the number of defects (tangling, fluff, single fiber breaks) due to the weft factor of woven taffeta, and is converted into the number per 50 m. The defects are 5/50 m or less in terms of the quality of taffeta. Must be

[0040]

[Table 7]

As described above, according to the weft yarn for AJL to which the treating agent of the present invention is applied, the air pressure of the jet nozzle can be set low, so that reduction of product defects and reduction of loom stoppage rate are realized. Not only can it be done, but it also has an energy-saving effect, and has a remarkable effect on the improvement of quality and operation results in the production of filament yarn fabric by AJL.

[0042]

The first characteristic of the fiber treating agent of the present invention is that the weft can be driven with a low air pressure.
Generally, in AJL, the weft yarn is jetted from a jet nozzle, and it is necessary to reach the other selvage end within a certain time through a predetermined passage made in an air by an air guide or a conveying nozzle. The pressure is set to the pressure to obtain the required flight speed. Reducing the weft driving air pressure is, in other words, increasing the weft flight speed under low air pressure.This effect reduces weft entanglement and single yarn breakage caused by air jets It not only improves rate and quality, but also paves the way for higher speeds.

The second characteristic of the fiber treating agent of the present invention is that the scattering of the flying properties in the length direction is small. Generally AJ
L weft yarns are supplied in the form of rolls, corn, cheese, etc., but these usually have different flight properties in the length direction such as the surface layer-inner layer and the upper part-lower part.

Since the air pressure for wetting is set to a constant value, the flight performance difference in the length direction may be too fast or too slow. If it is too fast, the quality of the yarn deteriorates due to the disorder of the yarn, which is not preferable. The cause of the difference in flight property in the length direction is the difference in moisture absorption, unwinding tension, modification of treatment agent, volatilization, etc., and in the case of acetate filament yarn, the residual ratio of acetone and methylene chloride, which are solvents of the spinning solution, It is possible that there are differences. The treating agent of the present invention was developed by paying attention to hygroscopicity, smoothness, and volatility in order to improve these nonuniform flight phenomena.

[Brief description of drawings]

FIG. 1 is a diagram showing gas chromatography showing the distribution of constituent carbon numbers of liquid paraffin used in Examples and Comparative Examples.

FIG. 2 is a diagram showing a gas chromatography showing a distribution of carbon numbers of constituents of liquid paraffin used in Examples and Comparative Examples.

FIG. 3 is a diagram showing gas chromatography showing the distribution of carbon numbers of constituents of liquid paraffin used in Examples and Comparative Examples.

FIG. 4 is a diagram showing gas chromatography showing the distribution of the number of constituent carbon atoms of liquid paraffin used in Examples and Comparative Examples.

FIG. 5 is a diagram showing gas chromatography showing the distribution of constituent carbon numbers of liquid paraffin used in Examples and Comparative Examples.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location // D06M 101: 06 D06M 13/44

Claims (5)

[Claims] 1. A liquid paraffin 70 having 9 to 18 carbon atoms
50% by weight, liquid paraffin having 19 or more carbon atoms 30 to 5
0% by weight and has a viscosity at 86 ° F of 5.7.
Liquid paraffin (I) having a viscosity of from about 8.7 centistokes to 80 to 90 parts by weight, and a terminal hydroxyl group of an ethylene oxide adduct of an alcohol having from 8 to 18 carbon atoms with 8 to 18 carbon atoms.
Compound (II) 5 which is ester-capped with an aliphatic carboxylic acid of
.About.15 parts by weight and an alkyl phosphate ester amine salt (III) having 8 to 18 carbon atoms in an amount of 5 to 10 parts by weight for a weft treating agent for an air jet loom (AJL), based on the weight of the fiber.
% -2.5% adhered weft yarn for AJL. 2. The weft yarn for AJL according to claim 1, wherein the alcohol used as the component (II) of the treating agent is a secondary alcohol or a branched primary alcohol. 3. The weft yarn for AJL according to claim 1, wherein the alcohol used as the component (III) of the treating agent is a secondary alcohol or a branched primary alcohol. 4. The weft yarn for AJL according to claim 1, wherein the amine used as the component (III) of the treating agent is dibutylethanolamine. 5. The weft yarn for AJL according to claim 1, wherein the weft yarn is an acetate filament yarn.