JPH09176967A - Polyester filling yarn for water jet loom weaving - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a polyester yarn suitable for a filling yarn for a high-speed water jet loom by incorporating a yarn with an oil solution containing a metal salt of a polyether addition-type alkyl phosphate as an essential component. SOLUTION: A spinning oil solution composition is prepared by compounding a metal salt of a polyether addition-type alkyl phosphate such as potassium polyoxyethylene oleyl phosphate in an amount of 1-10wt.% based on the total composition as an essential component and further, a lubrication component such as a mineral oil, an emulsifier such as polyoxyethylene oleyl ether and an antistatic agent such as an alkyl phosphate. The obtained spinning oil solution composition has the maximum value of a hydrated viscosity of >=1000cPs and <=100,000cPs in the water mixture having a water content of 10-70wt.%. A polyester multifilament yarn obtained by spinning through a spinneret and cooling to solidify in air is furnished with 0.5-1.5wt.% of the spinning oil solution composition followed by drawing. Thus, the objective polyester filling yarn for a high-speed water jet loom with a rotational speed of >=800rpm is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber weft for water jet loom weaving, and more particularly to a polyester filament weft for weaving at a high rotational speed of the loom of 800 rpm or more.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of a woven fabric using synthetic fiber filaments, weaving by a water jet loom capable of high speed operation is performed. In recent years, in order to rationalize the process and reduce the cost, some non-paste weaving is performed in which weaving is performed without sizing warp.

[0003] However, in the polyester type filament, since the yarn has a relatively rigid property, the unjetted warp yarns are used and the water jet loom
When weaving is performed at a loom rotation speed of 600 rpm or more, problems such as generation of fluff due to single warp yarn breakage or abrasion of parts of the loom such as reeds and heddle that are in direct contact with the warp yarn occur. Therefore, in high-speed weaving with a water jet loom of polyester-based filaments, a water-resistant acrylic sizing agent is attached to the warp side in order to improve the binding and surface protection of the warp, and the weft side is not treated in particular. It is generally performed using the thread as it is,
Many proposals regarding warp yarns have been made so far.

For example, JP-B-49-20276 and JP-A-62-62
In JP-A-223372, an oil agent mainly composed of mineral oil is applied to a yarn, and the yarn is pasted and used as a warp for weaving, whereby the desizing at the time of weaving is reduced, weaving efficiency and fabric quality are improved. Is disclosed.

According to the conventional method as described above, the effect is recognized in the weaving of the polyester filament by the water jet loom up to the loom speed of about 600 to 800 rpm. However, in order to further improve the productivity, when the loom speed is set to 800 rpm or more, the size of the glue becomes more severe and the warp threads and the parts of the loom come into direct contact with each other. There is a problem in that it is worn in a very short time, and the weaving efficiency and the quality of the fabric are deteriorated.

[0006]

DISCLOSURE OF THE INVENTION The present invention solves the above problems by focusing on a weft oil agent which has not been considered so far, and provides a high-speed water jet loom of 800 rpm or more. Even if weaving,
It is an object of the present invention to provide a polyester-based weft yarn which can reduce wetting and abrasion of reeds and can improve weaving efficiency and fabric quality.

[0007]

Means for Solving the Problems The inventors of the present invention have made earnest studies to solve such problems, and as a result, the oil agent adhering to the surface of the weft is scattered by jet water at the time of weaving and re-recovered. By adhering and relieving the friction between the reed and the warp, it was found that the size drop and the reed abrasion in the high speed weaving by the water jet loom can be reduced, and the present invention was accomplished. That is, the present invention is a polyester weft woven in a water jet loom, wherein a polyether addition type (hereinafter abbreviated as POE) alkyl phosphate metal salt is contained in an amount of 1 to 10% by weight based on the total composition in a step before weaving. And a polyester weft characterized by being attached with an oil agent having a maximum water viscosity of 1000 cps or more and 100000 cps or less when made into a water mixture having a water content of 10 to 70% by weight Is.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. In the present invention, it is important that the oil agent on the surface of the weft scattered by the jet water during weaving reattaches to the reed. Therefore, the oil agent attached to the polyester weft must contain a POE alkyl phosphate metal salt. Since POE alkyl phosphate metal salt has a strong adsorptivity for metals such as reed, if it is scattered from the surface of the weft and adheres to the surface of the reed, it will stay on the metal surface even in a moist atmosphere where jet water is constantly splashing, and It has an excellent function of preventing wear. And this content needs to be 1 to 10 weight% of the whole oil agent composition.
When the content is less than 1% by weight, there is substantially no effect, and
If the content exceeds 10% by weight, the viscosity of the oil agent increases and the lubricity decreases, and the oil agent that has fallen off during the process becomes scum, which is not preferable.

The POE alkyl phosphate metal salt is preferably a POE having an alkyl group having 12 to 18 carbon atoms and an ether chain having a polymerization degree of 3 to 9, which is substantially polyethylene oxide, added to the alkyl group. sodium,
Alkali metal salts such as potassium salts are preferred. like this
Specific examples of the POE alkyl phosphate include POE (polymerization degree 3) oleyl phosphate K salt, POE (polymerization degree 5) lauryl phosphate K salt, POE (polymerization degree 8) isocetyl phosphate Na salt, and the like.

The oil agent applied to the polyester weft of the present invention may contain a lubricating component, an emulsifier, an antistatic agent and the like, if necessary, in addition to the above components. The lubricating component has the effect of improving the frictional properties of the weft yarn and mitigating the friction between the reed and the warp by being dispersed by jet water like the POE alkyl phosphate metal salt. As the lubricating component, a mineral oil or octyl palmitate, a fatty acid ester such as lauryl oleate, a sulfur-containing aliphatic ester such as lauryl thiodipropionate, or the like is preferably used, and the amount thereof is 40 to 70% of the entire composition. A degree is preferable.

Next, emulsifiers and antistatic agents, these components are used to improve the uniform adhesion and the filament focusing property.
It has the effect of preventing the generation of static electricity or improving the stability of the emulsion when the oil agent is applied to the filament in the emulsion state. As the emulsifier, nonionic surfactants such as POE oleyl ether, POE castor oil ether, and trimethylolpropane trilaurate are preferably used, and the compounding amount thereof is preferably about 5 to 40% of the entire composition.

As the antistatic agent, metal salts such as alkyl sulfonates and alkyl phosphates, or anionic surfactants such as amine salts are preferably used.
The blending amount is preferably about 1 to 20% of the entire composition. In addition to these compositions, rust preventives, antibacterial agents, antioxidants, other modifiers, etc. may be contained as long as the object of the present invention is not impaired.

In the present invention, the oil agent containing the above-mentioned components has a maximum hydroviscosity of 1000 cps or more and 100000 cps or less, more preferably 2000 cps or more and 50000 cps when it is made into a water mixture having a water content of 10 to 70% by weight. It must be:

The viscosity characteristic specified in the present invention can be obtained by the following method. A predetermined amount of oil agent is placed in a beaker, and a predetermined amount of ion-exchanged water at room temperature is added with stirring and mixed sufficiently. The viscosity of a well-mixed water mixture was measured using a B-type viscometer (Rion, trade name:
Visco tester VT-02 type), and display the measured value in centipoise (cps). Then, each time a predetermined amount of ion-exchanged water is additionally added, its viscosity is measured, and the maximum value of the measured values is taken as the maximum value of the water-soluble viscosity.

When the maximum value of this water viscosity is 1000 cps or less, when the oil agent is scattered from the surface of the weft yarn by the jet water and reattaches to the reed, the mixture of the jet water and the oil agent has a low viscosity and flows down from the reed. The effect of preventing wear becomes insufficient. On the other hand, if it exceeds 100000 cps, the viscosity of the mixture of jet water and the oil agent becomes high, and scum adheres to the reeds to reduce weaving efficiency and fabric quality, which is not preferable.

The oil agent to be adhered to the polyester weft of the present invention may be added in any step before weaving, but particularly when it is applied as a spinning oil agent in the step of spinning a weft raw yarn, it is necessary to increase the number of steps. It is preferable because it does not exist.
In this case, this oil agent may be a 10 to 20% water emulsion or an organic solvent solution, and may be applied to the spun filament yarn by a conventional method. The oil agent adhesion amount is 0.5 to 1.5%.
The degree is preferred.

[0017]

With the use of the polyester weft of the present invention, the inventors of the present invention have the following reasons that the size of the glue is less and the reed is less worn even when weaving is performed in a water jet loom having a high rotational speed of 800 rpm or more. Thinks like. That is, the oil agent added to the weft is mixed with a POE alkyl phosphate metal salt which has a strong adsorptivity for metals and has an action of preventing metal abrasion even under wet conditions, and when the specific hydroviscosity characteristics are satisfied, the above components are contained. The oil agent can be scattered by the jet water at the time of weaving and can be efficiently reattached to the reed. Then, the re-adhered oil agent alleviates the friction between the reed and the warp yarns, so that the drop of the glue from the warp yarns and the abrasion of the reeds can be reduced.

[0018]

EXAMPLES Next, the present invention will be described in detail with reference to examples. The measurement and evaluation methods in the examples are as follows. (1) Maximum value of water-viscosity Take 360 g of the oil agent in a beaker, add 40 g of ion-exchanged water at room temperature with stirring, and mix well. Then, a well-mixed mixture having a water content of 10% by weight was placed in a constant temperature bath at 30 ° C., and was a B-type viscometer (manufactured by Rion Co., trade name: Viscotester VT-02 type)
To measure viscosity (cps). Next, 400 g of the mixture having a water content of 10% by weight was returned to the beaker, 50 g of ion-exchanged water at room temperature was added to the mixture while stirring, and the mixture was sufficiently mixed. Measure. Repeating this operation, water content 30, 40, 50, 60, 70% by weight
The viscosity of the mixture was measured, and the maximum value of the measured values was taken as the maximum value of the hydroviscosity.

(2) Resilient clogging polyester taffeta by water jet loom 3
00 weaving is performed at a loom speed of 840 rpm, and the reeds are cleaned every 7 days during the weaving period of about 40 days. The degree of clogging of the reeds at the time of cleaning is visually determined, and the average of 300 defects ( n = 5) was calculated. Score 3: Little clogging. 2: Some clogging can be seen 1: Many clogging. 0: Poor warp opening occurred due to clogging within 7 days after cleaning, and weaving became impossible.

(3) Reed Abrasion Resistance (2) In the weaving test, the reed was taken down from the loom after weaving for 300 times and the state of scratches was visually inspected with a microscope to make a judgment. Score 3: No scratches. 2: A shallow scratch is seen. 1: Deep scratches are seen. 0: Before weaving was completed, weaving was impossible due to a reed scratch.

(4) Woven fabric quality The polyester taffeta obtained in the above weaving test was inspected for its greige and visually determined. Judgment: No defect △: Slightly streaky. X: Streaks are seen.

Example 1 A polyethylene terephthalate chip containing an intrinsic viscosity of 0.69 and 0.45% by weight of titanium dioxide was dried by a conventional method, and the temperature was 295 ° C., the discharge rate was 28 g / min, and the bore diameter was 0.3 using a conventional melt spinning machine. After extruding from a spinneret having 18 mm pores, the spun yarn was cooled and solidified with an air stream, 1% by weight of the oil agent shown in Table 1 was applied, and the oil was taken up by a heating roller at 95 ° C at a speed of 3500 m / min. Then, it was drawn 1.54 times with a heating roller at 136 ° C. to obtain 49 denier 18 filament warp raw yarn.

[0023]

[Table 1]

Next, using 1330 of this raw yarn, an acrylic sizing agent J-98 (manufactured by Kyoukagaku Co., Ltd.) was used to process at a speed of 200 m / mi
n, paste concentration 12.5%, paste temperature 30 ℃, squeeze pressure 1.2Kg /
Glue was applied at cm ² and a drying temperature of 135 ° C, and the amount of glue applied was 5.3.
% Sizing thread was wound on the beam. Then, four beams of this sizing yarn were combined to make 5320 warp yarns, passed through a heddle, and then passed through a reed for a water jet loom having a reed density of 50/25 mm to obtain two woven beams.

On the other hand, using a polyethylene terephthalate chip and a melt spinning machine similar to the above, at a temperature of 295 ° C. and a discharge rate of 41 g / min, extrusion was carried out from a spinneret having 36 pores with a diameter of 0.3 mm to form a spun yarn. After cooling and solidifying with an air stream, 1% by weight of the oil agent shown in Table 2 was applied, and it was taken up by a 93 ° C heating roller at a speed of 3600 m / min, and then stretched 1.42 times with a 121 ° C heating roller. As a result, a weft yarn of 73 denier 36 filaments was obtained. Next, using the above weaving beam and the weft yarn, the number of weft threads is 75/25 mm, the loom rotational speed
Polyester taffeta was woven 300 times in a water jet loom under the condition of 840 rpm, and the weavability and the woven fabric quality were evaluated. Table 2 shows the results.

Examples 2 to 3 and Comparative Examples 1 to 4 Other than changing the spinning oils applied to the weft yarns to those described in Table 2 (Examples 2 to 3) and Table 3 (Comparative Examples 1 to 4). Was performed in the same manner as in Example 1. The results are shown in Tables 2 and 3. Tables 2 and 3 collectively show the oil agent composition of the wefts of Examples 1 to 3 and Comparative Examples 1 to 4, the maximum value of the hydroviscosity of the oil agent, the reed clogging during weaving, the reed abrasion, and the fabric quality.

[0027]

[Table 2]

[0028]

[Table 3]

As is clear from Table 2, Examples 1 to 3
In the case of No. 2, although the reed was woven by a water jet loom at a high speed of 840 rpm, the reed was hardly worn, the weavability was good, and the woven fabric quality was not a problem. On the other hand, it is clear from Table 3 that Comparative Example 1 in which the weft oil agent does not contain a POE alkyl phosphate metal salt and the POE alkyl phosphate metal salt have a low degree of polymerization and a small content, and are mixed with polyethylene glycol. In Comparative Example 3 in which the weft oil agent having a low maximum viscosity was used, the reed was remarkably worn, which caused warp in the woven fabric, resulting in poor fabric quality. In addition, Comparative Example 2 in which the amount of the POE alkyl phosphate metal salt of the weft oil agent added was large, and Comparative Example 4 in which a weft oil agent having a large maximum hydroviscosity was used using a highly viscous mineral oil.
In each case, the ream was clogged by scum, and the warp yarn opening failure was caused. Therefore, the warp was generated in the woven fabric, and the obtained woven fabric was inferior in quality.

[0030]

EFFECTS OF THE INVENTION According to the present invention, it is possible to weave polyester filaments in a water jet loom at a high rotation speed of 800 rpm or more, and it is possible to improve productivity and reduce costs.

Claims (1)

[Claims] 1. A polyester-based weft yarn woven in a water jet loom, which contains 1 to 10% by weight of a polyether addition type alkyl phosphate metal salt in the entire composition and has a water content of 10 in a step before weaving. The maximum value of water viscosity is 1000cps when it is mixed with ~ 70wt% water.
A polyester weft characterized by having an oil agent of 100000 cps or less attached.