JPH089831B2 - Oil agent composition for high-speed yarn making and high-speed yarn making method using the oil agent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] In the present invention, a melt-spun yarn is cooled, oiled, and further subjected to a fluid entanglement process, and subsequently stretched or substantially stretched. TECHNICAL FIELD The present invention relates to an oil agent composition suitable for a high-speed yarn-forming method of winding at high speed and a high-speed yarn-forming method using the same.

More specifically, the present invention relates to an oil agent composition effective for reducing various troubles caused by oil agent scattering during high-speed spinning.

[Prior Art] Thermoplastic synthetic fibers such as polyamide fibers and polyester fibers used for knitting and weaving are spun by a melt spinning method. Alternatively, a non-hydrated oil solution is generally applied. This oil solution applied during spinning is necessary for imparting smoothness to the yarn and preventing troubles such as electrostatic damage and yarn breakage during spinning or post-processing (manufacturing of knitted fabric, etc.).

And, this spinning oil agent is generally composed mainly of a smoothing agent such as a mineral oil and a fatty acid ester, and further contains an emulsifier, an antistatic agent, a sizing agent, etc., if necessary, and when refueling in a water-containing system, Usually, it is used as a water emulsion having a concentration of about 5 to 25% by weight.

Further, in recent years, a high-speed spinning method has been widely used in which the spinning speed is drastically increased to about 3500 to 6000 m / min or more, and a water emulsion type spinning oil agent has also been used in this high-speed spinning method. .

[Problems to be Solved by the Invention] However, in this high-speed yarn-forming method, the traveling yarn speed is high, and moreover, the oil agent falls off and scatters from the traveling yarn due to the confounding treatment after the oil agent treatment. The amount increases remarkably, and the oil agent that falls off and scatters adheres to the equipment on the yarn path and causes equipment contamination. Then, when the yarn runs in contact with the dirty device at a high speed, problems such as yarn breakage and fluffing occur. In particular, this problem was remarkable when an oil agent composition containing a mineral oil or a leveling agent of a fatty acid ester as a main ingredient of the oil agent was refueled with a water emulsion.

The contamination of the surrounding device can be improved to some extent by limiting the scattering range of the oil agent, but no effective means has been found for the oil agent contamination of the device (guide etc.) on the yarn path, so that the guide etc. There was no choice but to clean the equipment fairly often to remove oil deposits.

Therefore, the present invention, by improving the oil agent composition,
Even if the splashed oil agent adheres to the devices (guide etc.) on the yarn path,
The main purpose is to suppress the occurrence of troubles such as yarn breakage and fluffing caused by the attached oil agent. That is, the present invention
The main object of the present invention is to provide an oil agent composition and a high-speed yarn-forming method capable of solving the above-mentioned problems and obtaining a yarn having excellent smoothness and suitable for knitting and weaving.

Another object of the present invention is to provide an oil agent composition which can reduce dirt attached to devices such as guides and is effective for reducing the frequency of cleaning the devices.

[Means for Solving the Problem] In order to achieve this object, the present invention provides 25 to 80% by weight of a leveling agent based on the entire oil agent composition, and 15 based on the entire oil agent composition.
An oil agent composition containing 60 to 60% by weight of a polyether ester compound and a nonionic surfactant, wherein the leveling agent is substantially one or more of mineral oil, fatty acid monoester and fatty acid diester. The polyether ester compound is an ester compound in which a polyether chain having a degree of polymerization of 2 or more, which is substantially polyethylene oxide, is present in the molecule and both ends thereof are blocked with an aliphatic compound, and the oil agent An oil agent composition for high-speed yarn spinning wherein the maximum value of the hydroviscosity when the composition is a water mixture having a water content of 15 to 60% by weight is 2 × 10 ⁴ centipoise or less is defined as the invention of claim 1 and is also melted. After cooling the spun yarn, applying a water-emulsion type oil agent, fluid entanglement treatment, and further taking it off at a high speed of 3000 m / min or more, and subsequently drawing it or without substantially drawing it, 3 In a high-speed spinning method of winding at a high speed of 500 m / min or more, a high-speed spinning method using, as the water emulsion type oil agent, a water emulsion containing the oil agent composition of claim 1 as an active ingredient of the oil agent is the invention of claim 2. It is a thing.

As described above, the high-speed spinning method according to the present invention includes cooling the spun yarn, applying an oil agent, fluid confounding, and further drawing at a high speed of 3000 m / min or more, followed by subsequent stretching, or substantially. 3500 m / min or more, preferably 4000 m / min without stretching
It is a method of winding at a high speed of more than a minute, for example,
22363, JP-A-60-94616 and the like.

The fluid entanglement process in this high-speed yarn making method is usually performed by air entanglement with high-pressure air. The entanglement nozzle uses a nozzle that entangles the yarn by the turbulent flow of high pressure air,
The entanglement number varies depending on the number of filaments, the thickness (denier) and the intended use, but it is generally preferable that the CF value is about 3 to 50. Other fluid entanglement means may be used as long as the running yarns can be prevented from being separated. If this entanglement is not applied, the yarns are separated during the yarn making, the reverse winding around the godet roller and the fluctuation of the winding tension are likely to occur, and the yarn breakage and the fluffing at the time of the yarn making are increased. Furthermore, since fluff and yarn breakage due to yarn shake during the warping process are likely to occur frequently, it is necessary to provide entanglement during yarn production.

The present invention provides an oil agent composition (claim 1) suitable for use in such a high-speed yarn making method, and uses the above oil agent composition as a water emulsion type oil agent to be applied before the confounding treatment in this high-speed yarn making method. A method for producing a yarn (claim 2) is provided.

The oil agent composition according to claim 1 is 25 to 25 with respect to the entire oil agent composition.
80% by weight of smoothing agent, 15-60% by weight based on the total oil composition
And a nonionic surfactant, wherein the leveling agent consists essentially of one or more of a mineral oil, a fatty acid monoester and a fatty acid diester. The ether ester compound is an ester compound in which a polyether chain having a degree of polymerization of 2 or more, which is substantially polyethylene oxide, is present in the molecule and both ends thereof are blocked with an aliphatic compound,
In addition, the maximum value of the hydroviscosity when the oil composition is made into a water mixed solution having a water content of 15 to 60% by weight is 2 × 10 ⁴ centipoise or less.

Here, as the smoothing agent, a compound that is hydrophobic and exhibits high smoothness, such as mineral oil and / or fatty acid ester, is used.

Examples of the mineral oil include naphthene-based and paraffin-based mineral oils and mixtures thereof. Further, as the fatty acid ester, butyl laurate, lauryl laurate, octyl palmitate, tridecyl palmitate,
Monoesters such as tridecyl oleate and tridecyl stearate, diesters such as dioctyl sebacate, dioleyl sebacate, didecyl adipate and ditridecyl sebacate are used, and these esters may be esters of fatty acids or aliphatic groups. Esters from alcohol may also be used.

These leveling agents may be used alone or as a mixture of two or more kinds, but the total amount thereof needs to be 25 to 80% by weight. If the blending amount of this smoothing agent is too small, it is difficult to obtain the smoothness required for knitting and weaving. On the other hand, if the amount is too large, the water-emulsifying property is deteriorated and there is a problem in the stability after blending the oil emulsion, which makes it difficult to put into practical use. Further, the compounding amount of the leveling agent is preferably 35 to 70% by weight.

Further, the blending of the polyether ester compound is necessary to reduce the hydroviscosity of the oil agent composition, and the blending amount thereof needs to be in the range of 15 to 60% by weight based on the whole oil agent composition. If the blending amount is too small, it is difficult to obtain a desired low water-viscosity characteristic, and conversely, if the blending amount is too large, the friction characteristic becomes too high, which is not suitable for high-speed yarn making and knitting. Further, the blending amount thereof is preferably 20 to 45% by weight.

The polyether ester compound as used herein is a compound having a polyether chain having a degree of polymerization of 2 or more which is substantially polyethylene oxide in the molecule and having both ends blocked with an aliphatic compound. Above all, it is preferable to select the number of moles of ethylene oxide added and the type of the aliphatic compound so that the hydrophilicity (HLB) represented by the following formula is 6 to 10 in order to increase the effect of decreasing the hydroviscosity.

Hydrophilicity (HLB) = (molecular weight of hydrophilic component / molecular weight of polyether ester compound) × 20 That is, when the ethylene oxide addition mole number is relatively large, it is preferable to use a compound having a relatively large carbon number. Furthermore, it is generally preferable that the ethylene oxide addition mole number is 10 or less and the aliphatic compound has 14 or less carbon atoms.

Examples of the polyether ester compound include:
Butyl alcohol ethylene oxide adduct lauryl ester and octyl ester, lauryl alcohol ethylene oxide adduct lauryl ester and octyl ester, such as lauryl ester and octyl ester, organic acid esters of ethylene oxide adducts of aliphatic compounds having 14 or less carbon atoms, for example, the degree of polymerization 8
Examples thereof include esters of polyethylene oxides having a degree of polymerization of 2 to 10 and fatty acids having up to 14 carbon atoms, such as polyethylene oxide dilaurate and dioctanoate. However, as described above, both ends of the polyether chain in the molecule need to be blocked with an aliphatic compound. Further, the above compounds may be arbitrarily mixed and blended.

Furthermore, examples of the nonionic surfactant mainly composed of an emulsifier include known ethylene oxide adducts of active hydrogen-containing compounds such as higher fatty acids, aliphatic alcohols and polyhydric alcohols. Substantial ethylene oxide adducts of natural alcohols such as tallow alcohol and castor oil may also be used. The number of moles of ethylene oxide added is preferably about 3 to 10 moles.

In addition to the above-mentioned leveling agent and emulsifier, components such as an antistatic agent, an antistatic auxiliary, a sizing agent, and a preservative, which are usually used in spinning oils, may be added.

The hydroviscosity characteristic specified in the present invention is measured by the following method.

An oil agent composition (containing substantially no water) obtained by mixing the components is placed in a beaker, and normal temperature water is added thereto in predetermined amounts with stirring and mixed sufficiently. The viscosity of a sufficiently mixed water mixed solution is measured by an E-type viscometer (manufactured by Tokyo Keiki Co., Ltd.), and the measured value is displayed in centipoise. The measurement may be carried out under low shear conditions in which the rotational speed of the viscometer is set to a low level corresponding to the viscosity level. For example, when the viscosity is about 10,000 to 100,000 centipoise, the rotational speed is preferably about 0.5 rpm. Then, each time a predetermined amount of normal temperature water is sequentially added, its viscosity is measured, and the maximum value of the measured values is taken as the maximum value of water viscosity.

As a method of refueling, a normal method, for example, a roller refueling method, a guide refueling method of quantitatively supplying an oil agent from a nozzle, or the like may be used.

The polymers used for high-speed spinning are all melt-spinnable polymers, but in general, polyamides such as nylon 6 and nylon 66, polyesters such as polyethylene terephthalate and polybutylene terephthalate can be mentioned. In particular, the present invention is effective for high-speed polyamide spinning.

[Operation] In high-speed yarn production, the traveling yarn speed is as high as 3000 m / min or more at the take-up speed and 3500 m / min or more at the winding speed, and may run at high speed at 6000 m / min or more. Therefore, it is not possible to obtain the optimum oil agent composition from the same viewpoint as the oil agent composition applied to the yarn at low speed running.

That is, in high-speed spinning, after the spinning oil emulsion is applied to the yarn immediately after spinning and cooling, vibration of the yarn running at high speed, contact with guides, and further to provide essential entanglement for high-speed yarn production. Due to the high-pressure fluid being blown off from the fluid entanglement nozzle, the thread-adhering oil agent often falls off and scatters. The oil emulsion that has fallen off and scattered and adhered to the devices becomes an extremely highly viscous (hard paste or solid) deposit when water evaporates over time and reaches a specific water content. When the highly viscous deposits are successively accumulated on the thread-like contact portion on the device, the resistance of the yarn traveling in contact with the thread at a high speed becomes large, which causes troubles such as yarn breakage and single yarn breakage. This trouble occurs remarkably when using a spinning oil for knitting and fabrics, which is mainly composed of a leveling agent of mineral oil or fatty acid ester.

This highly viscous deposit is also generated in the case of a spinning process in which the yarn traveling speed is as low as about 2000 m / min or less, but because of the low speed, the amount of the oil emulsion dispersion itself is relatively small, and high Even if the viscous material accumulates, the yarns traveling at a relatively low speed come into contact with each other, so that serious troubles such as yarn breakage were hardly induced. That is, generally 20 ~
A water mixture of an oil agent tends to have high viscosity in a water content range of about 60% by weight, but the oil agent emulsion applied to the yarn is usually used at a relatively low concentration of about 15% by weight or less. However, the maximum value of the hydroviscosity of the oil agent has not been considered at all until now.

Moreover, even the oil agent composition used in the known example relating to the high-speed spinning method does not consider the hydroviscosity property at all, and the oil agent composition mainly composed of the leveling agent has a very high maximum value of the water viscosity and is different from the present invention. The oil composition was used.

When an oil agent composition having the maximum value of water viscosity specified in the present invention of 2 × 10 ⁴ centipoise or less, preferably 8 × 10 ³ centipoise or less is used as a water emulsion, it is scattered during spinning and adheres to devices such as guides. Even if water evaporates over a long period of time, the resulting oil solution remains in a soft paste form, so even if the yarns run at high speed, it does not cause problems such as yarn breakage or fluffing. Therefore, these troubles can be greatly reduced. Furthermore, it is possible to reduce the frequency of cleaning the devices such as the guides during the yarn making, and it becomes easier to remove the oil stains during the cleaning, which facilitates the cleaning work.

Moreover, in order to obtain the above-mentioned specific level of hydroviscosity characteristics, it is necessary to blend a specific amount of the polyether ester compound, and the blending of this polyether ester compound should inhibit the stability and smoothness of the oil agent. Therefore, it is useful as a means for reducing the viscosity of water.

As described above, in the present invention, in order to eliminate problems such as yarn breakage and fluffing in the high-speed spinning method, it is effective to characterize the oil agent composition with the hydroviscosity characteristics and the oil agent composition. It was made based on.

Furthermore, since the present invention uses an oil agent composition having a smoothing agent content of 25 to 80% by weight, it is possible to impart the smoothness necessary for weaving and weaving to the yarn, and to provide a yarn suitable for weaving and weaving. Obtainable.

[Example] In the ethylene oxide adducts used in the following examples, the n-mol-added ethylene oxide is represented by (EO) n, and the weight average molecular weight thereof is represented by Mw.

-Example 1 Nylon 66 polymer (98% sulfuric acid relative viscosity 2.60) was supplied to an extruder type melt spinning machine, melted and discharged from a spinneret, and then a 15% water emulsion of the oil agent composition shown in Table 1 was applied by an oiling roller. It was given (the amount of oil on the wound yarn was 1.0% by weight), entangled with an air entanglement nozzle using compressed air of 3 kg / cm ² and then taken up by a Goddye roller at 4200 m / min, stretched 1.25 times and stretched to 5000 m. Rolled up per minute, 30 denier
A nylon 66 yarn of 10 filaments was obtained.

As the oil agent composition to be applied at the time of spinning, various oil agents having different maximum values of water viscosity (Nos. A to K in Table 1; oil agent composition ratio depends on parts by weight) were used. Then, the degree of dirt accumulation in the guide below the refueling roller is visually compared and judged, and the number of yarn breakages during spinning (times / ton)
Was measured and the results are shown in Table 1.

Further, the obtained nylon 66 yarn was warped by a usual method, and then a half tricot was knitted, and the frequency of fluff generation during the warping was evaluated by the value of the number of stop days per 10 ⁷ m.

As shown in Table 1, when an oil agent composition having a proper amount of polyether ester compound and a maximum hydroviscosity of 2 × 10 ⁴ centipoise or less was used (No. AE), after refueling Although the oil agent is scattered due to air entanglement etc., the viscosity of the oil agent emulsion dirt that has fallen off and scattered and adhered on the device is not seen over time, and the oil agent that has adhered to the guide still drops sequentially. Therefore, the amount accumulated on the guide was slight, there was little yarn breakage during spinning, and stable high-speed spinning with sufficient air entanglement could be performed. Furthermore, the occurrence of fluff in the warping step was small, and the post-process passability was good.

When an oil agent composition with a maximum hydroviscosity of more than 2 × 10 ⁴ centipoise was used (No. H, J) because the amount of the polyether ester compound was too small or too small (No. H, J), it fell off and scatters during spinning. The oil emulsion adhering to the device became a hard paste in 7 to 8 hours and adhered to the yarn guide, and the yarn breakage increased with time. In addition, many fluffs were generated in the warping process, and the yarn was inferior in process passability.

Further, when a polyetherester compound having a hydrophilicity (HLB) of 6 to 10 is used ((No. F, G), it is difficult to sufficiently reduce the hydroviscosity, and thus the object of the present invention is achieved. It was difficult to do.

Furthermore, when an oil agent composition containing too much polyether ester compound even when the maximum value of water viscosity is 2 × 10 ⁴ centipoise or less (No. I), smoothness deteriorates and fluff during molding Occurrence increased and it was unsuitable for the tricot raw yarn.

If the yarn is made without fluid confounding (No.K),
Even if a highly viscous oil agent other than the present invention is used, there is little adverse effect due to scattering and adhesion of the oil agent such as guide stains, but there is a major problem that many yarn breakages occur during spinning and warpability deteriorates.

[Effects of the Invention] According to the method of the present invention, troubles such as yarn breakage and fluffing caused by falling off and scattering of the oil agent are significantly reduced even when the water emulsion type spinning oil agent is applied and the entanglement treatment is performed in high-speed spinning. be able to. Further, it is possible to significantly reduce the contamination of the device such as the lower part of the oil supply roller and the guides, thereby reducing the frequency of cleaning the devices and facilitating the cleaning work.

Moreover, the obtained yarn has excellent processability in post-processing such as warping, weaving, and knitting.

Claims (2)

[Claims] 1. An oil agent composition containing 25 to 80% by weight of a smoothing agent based on the entire oil agent composition, 15 to 60% by weight of a polyether ester compound based on the entire oil agent composition, and a nonionic surfactant. Wherein the leveling agent is substantially one of mineral oil, fatty acid monoester and fatty acid diester.
Consisting of one or more species, the polyether ester compound,
It is an ester compound having a polyether chain of a degree of polymerization of 2 or more which is substantially polyethylene oxide in the molecule and both ends thereof are blocked with an aliphatic compound, and the oil agent composition has a water content of 15 to 60% by weight. % Water mixture, the maximum value of water viscosity is 2 × 10 ⁴ centipoise or less, an oil agent composition for high-speed yarn spinning. 2. A melt-spun yarn is cooled, a water-emulsion type oil agent is applied thereto, a fluid entanglement treatment is carried out, and the yarn is taken at a high speed of 3000 m / min or more, and subsequently drawn or substantially drawn. Without a high-speed spinning method of winding at a high speed of 3500 m / min or more, as the water emulsion type oil agent,
A high-speed spinning method comprising using a water emulsion containing the oil agent composition according to claim 1 as an oil agent active ingredient.