JPS5924214B2 - Method for manufacturing intertwined crimped yarn for water jet loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method for producing a multifilament entangled crimped yarn used in weaving without glue in a water jet loom.

Furthermore, it is possible to prevent the occurrence of jet stains, to omit or reduce steps such as desizing, scouring, and drying in the dyeing process, and to rationally obtain a multifilament interlaced crimped yarn fabric. Provide manufacturing method.

[Conventional examples and their problems]

Conventionally, when weaving multifilament crimped yarn in a water jet loom, the warp yarns were glued.
Desizing and scouring steps are required to remove the sizing agent, and there is also the problem of jet stains caused by the sizing agent falling off in the loom.

On the other hand, Ganjin Toyama has accumulated a lot of experience with no-glue, no-twist water jet loom weaving using nylon filament yarn, but even with the above-mentioned no-glue yarn, it is still difficult to eliminate jet stains, and therefore, it is difficult to eliminate jet loom weaving. It was not possible to omit or reduce the steps.

Jet dirt is caused by the oil applied to the warp yarn cross material or the yarn for the purpose of smoothing and anti-static, etc., being washed away by the water used to insert the weft yarn in the water jet loom, causing damage to the machine's reeds and healds. , re-adheres to temples, temple bars, etc. and remains continuously wet for a long time, resulting in
Microorganisms multiply and grow to form a lump of dirt, which reduces weaving efficiency, lowers the quality of gray fabric, and causes dirt defects when it adheres to gray fabric.

For this reason, the loom is usually stopped after a certain period of time, and when it is washed with water, the quality of the gray fabric in the warp yarn section between the back roller and the front of the fabric deteriorates, and the loose dirt particles adhere to the gray fabric. There are problems such as.

Also, sufficient scouring is required to remove dirt adhering to the gray fabric.

In order to prevent this kind of trouble, it is necessary to prevent jet contamination from occurring for at least a period long enough to weave one live beam.

In the case of conventional polyester yarns, in the case of crimped yarns, drawing and false twisting was performed using low-speed spinning and so-called low-oriented undrawn yarns, so the amount of oil deposited was increased by increasing the drawing ratio. Furthermore, the cross-sectional shape of the constituent fibers is easily deformed, and the oil adhering to the deformed inner surface cannot be easily removed, making it difficult to obtain an unscoured fabric even if weaved in a water jet loom. I couldn't.

It is also conceivable to once draw the low-oriented undrawn yarn and then subject it to false twisting, but this method does not allow for efficient production and results in high costs.

As a prior art similar to the present invention, JP-A-50-10
1696, JP-A No. 51-47198, JP-A-48-6043, JP-A-49-26094, etc., but all of these conventional techniques used low-oriented undrawn yarn. The above problems could not be solved.

[Object of the present invention]

The present invention aims to improve the drawbacks of the conventional example.

Specifically, by using highly oriented undrawn polyester yarn, using a small amount of a compound that has an affinity for water as an oil agent, drawing and simultaneously false-twisting the yarn, and combining this with a specific interlacing technique, we have developed a method that has not been previously used in the industry. To provide a technique for obtaining intertwined crimped yarn, which is a twist-free yarn and can be made into a fabric that can omit or reduce scouring.

[Configuration of the present invention]

The present invention consists of the following configuration.

"In the method for producing polyester yarn used in water jet loom non-stick fabrics, highly oriented unstretched polyester filament yarn to which an oil agent containing an alkylene oxide adduct as a main component is applied is used as the raw yarn, and the highly oriented unstretched polyester filament yarn is The polyester filament yarn is subjected to simultaneous stretching and false twisting at a temperature of 160° C. or higher and a residence time of 0.1 seconds or more, and the oil content after processing is reduced to 1.0% by weight or less. A method for producing entangled yarn for a water jet loom, characterized in that entangling treatment is performed by jetting fluid from a direction perpendicular to the running direction.

[Function of the present invention] In the present invention, the highly oriented undrawn polyester filament refers to a polyester filament yarn wound at a high speed of, for example, 3000 m10 during melt spinning.

When such high-speed spinning is performed, the molecules become highly oriented, and the birefringence increases from the conventional product of 10XIO-3 or less to, for example, 25x10-
3 or more, and the cross-sectional deformation of the constituent fibers becomes small even during drawing and false twisting in the subsequent step.

Furthermore, the stretching ratio can also be reduced.

Therefore, the amount of oil adhered can be reduced.

Next, in the present invention, it is necessary to apply an oil agent containing an alkylene oxide adduct as a main component.

This is to perform the stretch false-twisting efficiently and with high quality without generating curly feathers or the like.

In other words, it maintains a good friction coefficient between threads and threads and metal, smoothes migration (replacement of constituent filaments) during drawing and false twisting, and maintains a good friction coefficient between threads and threads, and ensures smooth migration (replacement of constituent filaments) at guides, winding sections, etc. This is to provide slippage and prevent the occurrence of fuzz.

In addition, this oil agent can be
It is necessary to develop the function of reducing oil removal.

Here, the alkylene oxide adduct refers to an addition of a compound such as ethylene oxide, propylene oxide, butylene oxide, etc. alone or in combination to alcohol, or an ethylene oxide-propylene oxide copolymer (including random copolymerization and block copolymerization). Refers to the added material.

Examples of the alcohol include pentaerythritol, matcha alcohol, nonylphenol, and other known additives may be used.

The oil agent of the present invention can be used as an aqueous solution or an aqueous emulsion.

Further, the amount of oil adhered will be explained later.

Next, in the present invention, it is necessary to subject the highly oriented undrawn yarn to which the oil agent has been adhered to simultaneous stretching and false twisting at a temperature of 160° C. or higher and a residence time of 0.1 seconds or longer.

By processing under these conditions, in order to omit or reduce the scouring process, the amount of oil applied after the spinning process is reduced by scattering, and the amount of oil applied after the spinning process is reduced, and to prevent jet staining, the emulsification balance of the oil is disrupted and the shedding rate is reduced. It can be made difficult to fall off due to water during weaving.

Reduction due to oil scattering 1. and the reduction in dropout rate was 160
It is more noticeable with heat treatment of ℃×0.15 seconds or more, so 1
Heat treatment at 60° C. for 0.15 seconds or more is more preferred.

Furthermore, if too much oil is scattered during the heat treatment, there will be a problem of contamination due to the scattered oil and it will be uneconomical in terms of consumption of the oil, so it is preferable that the amount of scattering during the heat treatment is 90% or less.

Further, the heat treatment conditions of the present invention are also necessary for efficiently and smoothly performing the stretch false twisting process.

That is, it is necessary to perform drawing and false twisting at the same time to efficiently impart strength and crimp to the constituent filaments.

Next, in the present invention, it is necessary to keep the amount of oil attached after simultaneous stretching and false twisting to 1.0% by weight or less.

This is to omit or reduce the scouring process.

In addition, since the polyester filament yarn of the present invention uses highly oriented undrawn yarn as the starting yarn, there is little cross-sectional deformation.
Even if the amount of oil adhered is as small as 1.0% by weight or less, it can sufficiently function as an oil.

Furthermore, in the past, a large amount of oil was deposited to serve both the functions of a sizing agent and a glue agent, but in the present invention, the focusing means can be efficiently performed by fluid entanglement, which will be explained later. It is only necessary to make the most of the characteristics (adaptation of characteristics).

Therefore, 1.0% by weight or less is sufficient.

The oil agent is applied to the highly oriented undrawn yarn during melt spinning, but the amount of oil applied must be controlled in consideration of smoke formation, evaporation, contact dropout, etc. during drawing and false twisting.

In other words, the amount attached to highly oriented undrawn yarn depends on the false twisting temperature,
Although it varies depending on the residence time, it is preferably approximately 1.1 to 1.9 times the set deposition amount after stretching and false twisting.

The amount of oil adhering to the thread is measured by the following method.

After vacuum drying the sample at 20°C for 24 hours, 20°C, 65% R
Leave it in an atmosphere of H for 24 hours.

A flask weighing about 100 g is immersed in the chromic acid mixture for 24 hours, thoroughly washed with water, and then immersed in a 1% aqueous sodium hydroxide solution for 5 minutes and thoroughly washed with water.

After drying this at 105° C. for 1.5 hours, it is stored in a desiccator and cooled.

After cooling for 1.5 hours, take it out, weigh it using a direct indicator balance, and store it again in a desiccator.

The sample was weighed in the range of 10±0.02g and the weight W was determined.

, and place it into the flask taken out from the desiccator using clean tweezers that have been sufficiently washed with an organic solvent or the like.

Using a clean, washed pipette, take a 100-proof methanol test, place it in the Daruma flask containing the sample, and attach a Soxhlet type extractor to the flask.

These were set in a steam bath and refluxed for 3 hours, then the steam was stopped, the sample was taken out with tweezers, and the extractor was attached again to completely recover methanol.

Immediately remove the flask and wipe the outside with a clean cloth.
Place it in a dryer at 05±5℃ and take it out after drying for 0.5 hours.
Store in the desiccator.

After cooling for 1.5 hours, weigh the weight W2 with a direct indicator balance,
Calculate the amount of oil adhering to the thread using equation (1).

o-W2 Adhesion amount (%) = -X 100 (1) W.

In the present invention, if the amount of oil applied after false twisting is 1.0% by weight or more, omitting the scouring step is not preferable because problems such as uneven dyeing during dyeing, batch cracking, and reduced waxiness occur. .

Next, in the present invention, it is necessary to perform an entanglement treatment on the polyester yarn that has been drawn and simultaneously false-twisted by injecting a fluid from a direction perpendicular to the running direction of the yarn.

When the fluid is injected from the direction perpendicular to the running yarn, the constituent filaments are opened and entangled efficiently, and an interlaced yarn with stable quality and no unevenness can be obtained.

Therefore, the yarn can be made without any glue or twist.

An example of such a confounding device is shown in FIG.
Fluid (for example, pressurized air) is introduced through the lower hole, passes through the slightly widened part, and is injected into the injection part with a round cross section in the center.

The yarn is then run perpendicular to the round cross section.

The degree of entanglement when the multifilament entangled crimped yarn of the present invention is used as a warp yarn for weaving without glue in a water jet loom is preferably a CF value of 60 or more, more preferably 90 or more.

The CF value referred to herein is the value measured by the method described in Japanese Patent Application No. 136147/1982, and the reason is as follows.

When weaving intertwined crimped yarns without glue, a higher degree of convergence is required than that of straight yarns, and it is necessary to use yarns with high interlacing uniformity and entanglement strength.6 Also, measure the CF value of the crimped yarns. In this case, if the above-mentioned method, which has been conventionally used for straight yarns, is used, there is a risk of overestimating the cohesiveness because the movable needle inserted between the single yarns has poor slippage due to tangles of the single yarns due to crimping.

When measuring the CF value, by increasing the tension of the yarn during measurement and/or the force applied to the moving needle for measurement, weak entanglements are disentangled during measurement, and only strong entanglements can be measured.

The specific method will be described below.

As shown in FIG. 3, the sample is hung on a grooved sliding pulley 9 that can rotate left and right around the central axis 8 without resistance so as not to slip, and a load 1L12 is applied at two locations.

The load is the total denier of the sample x 0.4g. Next, a fixed needle 10 having an outer diameter of 9.60 mm is inserted and fixed at a substantially right angle between the single threads constituting the thread.

Next, a constant load 13 whose weight is the single yarn denier of the sample x 2 g is applied to the load 11 applied to the left side of the sample, and the sample is moved to the left until the constant load 13 catches the entangled portion and stops.

Next, the constant load 13 applied to the load 11 is removed and added to the load 12 on the right side, and the sample is moved to the right by the constant load 13, so that the intertwined part is caught on the needle 10 and stopped naturally.

The moving speed of the sample due to the constant load 13 is ICrfL, /se
Let it be c.

Distance l (mrIL) moved to the right of the sample by the above method
The CF value is calculated using equation (2).

000 CF-(2) A+0.60 The above operation is repeated 20 times and the average value is displayed.

Next, the manufacturing process of the present invention will be explained using FIG.

First, a highly oriented undrawn yarn 1 to which an oil agent containing an alkylene oxide adduct as a main component is attached is transferred from a yarn feeding device 2 to a simultaneous drawing and false twisting zone where a heating plate 3, a false twisting device 4, and a yarn feeding device 5 are arranged. supply to

Here, stretching is performed between the yarn feeding devices 2 and 5, and at the same time, false twisting is performed using the false twisting device 4 and the hot plate 3.

Next, the space between the yarn feeding devices 5 and 7 is slightly relaxed, and the fluid treatment device 6 is used to intertwine the yarn.

As an example, the fluid treatment device shown in FIG. 2 can be used.

Further, the false twisting device may be of any type such as a spindle type, an internal type, an external type friction false twisting device, etc. [Effects of the Invention] The present invention has the following effects.

(1) Since highly oriented undrawn polyester filament yarn is used as the starting yarn, cross-sectional deformation of the constituent filaments can be prevented even by false twisting at the same time as drawing, thereby making friction favorable even with a small amount of oil coating. be able to.

Further, when a water jet loom fabric is used, it can be a non-scouring fabric or a fabric that requires less scouring.

(2) Uniform and high-quality intertwined crimped yarn can be obtained, so it can be a yarn without glue or twist.

(3) Furthermore, the heat treatment disrupts the emulsification balance of the oil agent and reduces the rate of shedding of the oil agent due to water, so the rate of shedding due to water during weaving is reduced, preventing jet stains, stains on healds, reeds, etc. I can do it.

(4) Furthermore, since the residual amount of the oil agent is 1.0% by weight or less, problems such as uneven dyeing, batch cracking, and decreased fastness do not occur even if dyeing is performed without scouring.

(5) Furthermore, when producing a multifilament entangled crimped yarn, reducing the amount of oil before performing the entangling treatment has the advantage of increasing the effect of the entangling treatment.

In particular, when the amount of oil is 0.6% by weight or less, the slippage between the single yarns becomes poor and the entanglement during the intertwining treatment becomes better.

The adhesive force between the single yarns becomes small when the amount of oil is 0.6% by weight or less, and the opening effect between the single yarns, which is required during the entangling process, increases, contributing to the improvement of the entangling process.

The above effect is even more remarkable when the amount of oil agent is 0.5% by weight or less.

Therefore, when weaving without glue in a water jet loom using the multifilament interlaced crimped yarn of the present invention,
It is possible to prevent the occurrence of jet stains and to omit steps such as desizing, scouring, and drying in the dyeing process, and to rationally produce a multifilament entangled crimped fabric.

The main purpose of the oil agent used in the multifilament intertwined crimped yarn of the present invention is to maintain good processability during normal spinning, drawing, and crimping processes, so it has smoothness and antistatic properties. It is preferable that

Therefore, it is usually preferable to use a smoothing component and an antistatic component in combination.

When combining these, it is necessary to consider the interaction of oil agents and the interaction with dyes in order to dye without scouring.

For example, mineral oil, fatty acid ester, polyhydric alcohol ester, etc. are used as the smoothing component of the subcomponent, and salts of higher fatty acids, salts of sulfonic acids, phosphates, triethanolamine salts, etc. are used as the antistatic components of the subcomponent. is used.

The antistatic component is usually preferably kept at 20% or less so as not to affect the dyeability.

Further, the method for applying the treatment agent is not limited to during spinning, but can also be applied at any step before the heat treatment step.

Further, after applying the oil agent as described above, the oil agent may be applied again after the heat treatment process for a specific purpose, but in that case, sufficient care must be taken in selecting the oil agent and the amount applied in order to achieve the purpose of the present invention. Must be.

For example, in the case of cationic yarn Corning oil, which has a large effect on dyeing, it is necessary to minimize the residual amount.

The multifilament intertwined crimped yarn for water jet loom glueless weaving of the present invention is used as at least one component yarn for warp and weft, but it is preferably used for both warp and weft.

In addition, when used for either one, it is desirable to take care that the yarn used in combination with the interlaced crimped yarn of the present invention also satisfies the conditions required for the interlaced crimped yarn of the present invention.

The present invention will be explained below with reference to Examples.

Example 1 300 polyethylene terrestrial filament yarns
Spinning at 0 m/min, various oils were mixed with water at a concentration of 1.
Using a 0% solution, various amounts were applied using a conventional lubricating method to obtain highly oriented undrawn yarns of 250 denier and 48 filaments.

The highly oriented undrawn yarn was heated at various temperatures in the apparatus shown in FIG.
Stretching ratio of 1.7 times while adding twist of 400T/M,
After stretching and false twisting at a processing speed of 200 m/min, the fluid processing device 6 having a cross section as shown in FIG. An interlacing treatment was performed at a pressure of Okg/ff1G to obtain an interlaced crimped yarn.

The CF values were all in the range of 90-120.

These yarns were directly warped from the wound cheese and then weaved without glue in a water jet loom to obtain a gray fabric with a Nanako texture of 96 yarns/inch vertically and 88 yarns/inch horizontally.

As the weft yarn, the same yarn was wound without being subjected to interlacing treatment.

The weaving conditions were a rotational speed of 36 Orpm and an amount of water jetted at 4 TrLl per pick.

The possibility of omitting the scouring process is to use the obtained greige as a dye after drying Dianix Navy BlueER-
Using FS and dispersant, bath ratio 1:30, dyeing temperature 13
Evaluation was made based on dyeing unevenness and batch cracking when dyeing was carried out at 0°C for 60 minutes.

The jet stain was evaluated based on the state of oil removal and mold growth as a result of weaving a fabric of approximately 700 kg per bib.

The results are shown in Table 1. Oil composition (parts indicate parts by weight.

) Oil agent A D Trimethylolpropane tricarb 50 parts Oil composition (parts indicate parts by weight.

) n-Butyl stearate 15 parts Matcha alcohol (EC) 8 15 parts Nonylphenol (EC) 4 15 parts Oil composition (parts indicate parts by weight).

) Lauryl phosphate potassium salt 5 parts oil agent B
: Mineral oil (100 seconds) 70 parts Matcha alcohol (EO) 5 15 parts/I (EO)
8 15 parts lauryl phosphate potassium salt 5 parts Oil agent C: Pentaerythritol/ethylene oxide 90 parts oxide/propynone oxide adduct (E0/total molecular weight °5%) Molecular weight 2800 Nonylphenol (E O) to (emulsifier) 5 parts lauryl phosphate potassium Salt (antistatic agent) Part 5 As is clear from Table 1, Experiments Nos. 1 to 4 were within the scope of the present invention, so the deformation of the constituent filaments was small and the amount of oil adhesion could be reduced, and all of them were suitable for water jet looms. Jet stains, dye unevenness and batch cracking are now preferable, making it possible to omit scouring.

On the other hand, in Experiment No. 5, the stretching false-twisting temperature was 156°C, which was unfavorable because jet staining occurred in the water jet loom.

Furthermore, in Experiment No. 6, the residence time on the hot plate was less than 0.1 seconds, so jet staining occurred, which was undesirable.

In Experiment No. 7, since the amount of oil adhesion after stretching and false twisting was 1.0% by weight or more, jet stains and uneven dyeing batch stains occurred and scouring could not be omitted.

Further, in Experiment No. 8, the oil agent was mainly composed of an oil-based compound and none of the oils were mainly composed of alkylene oxide adducts, so uneven dyeing batch cracking was undesirable and scouring could not be omitted.

Comparative Example 1 Polyethylene terephthalate was spun at a spinning speed of 1800 m/min, and the oil C of Example 1 was applied to obtain a low-oriented undrawn yarn of 485 denier and 48 filaments.

The undrawn yarn was heated at a temperature of 1 while applying a twist of 2400 T/M.
85°C, residence time 0.39 seconds, stretching ratio of 3.3 times, 2
After stretching and false twisting at a processing speed of 00 m/min, an intertwined crimped yarn was obtained in the same manner as in Example 1.

CF values ranged from 90 to 120. The obtained yarn had a denier of 147 and a filament of 48 as in Example 1.

However, the degree of deformation of the constituent filaments was extremely high compared to Example 1.

In addition, the amount of oil adhered is 1.4% by weight after stretching and false twisting.
Otherwise, the stretching and false twisting would not be performed efficiently and fuzz would occur.

This is thought to be because the drawing ratio has to be higher than in Example 1, and the degree of deformation of the constituent filaments is extremely high compared to Example 1, so the oil agent is not used efficiently. It will be done.

In addition, this thread was woven and dyed in the same manner as in Example 1, but
Jet contamination in the water jet loom was extremely high, and uneven dyeing and batch cracking occurred, so scouring could not be omitted.

We also considered reducing the amount of scouring, but this was also not possible.

[Brief explanation of drawings]

FIG. 1 is a schematic representation of one embodiment of the method of the invention. FIG. 2 is a cross-sectional view of one embodiment of a fluid treatment device for obtaining the intertwined crimped yarn of the present invention. FIG. 3 is a schematic diagram of a degree of entanglement (CF value) measuring device. 1... Yarn, 2... Yarn feeding device, 3.
...Hot plate, 4...False twisting device, 5...
...Yarn feeding device, 7...Fluid processing device, 7...
...Yarn feeding device.

Claims (1)

[Claims] 1. In the method for producing polyester yarn used in water jet loom non-stick fabrics, highly oriented undrawn polyester filament yarn to which an oil agent containing an alkylene oxide adduct as a main component has been applied is used as the raw yarn, and the highly oriented undrawn polyester filament yarn is The polyester filament yarn is subjected to simultaneous stretching and false twisting at a temperature of 160° C. or higher and a residence time of 0.1 seconds or more, and the oil content after processing is reduced to 1.0% by weight or less. A method for manufacturing an entangled crimped yarn for a water jet loom, characterized in that entangling treatment is performed by jetting fluid from a direction perpendicular to the running direction.