KR20000040008A - Emulsion composition for producing nylon drawn yarn - Google Patents

Abstract

PURPOSE: An emulsion composition for producing a nylon drawn yarn which has excellent combination propery and swellability of fiber. CONSTITUTION: An emulsion composition for producing a nylon drawn yarn contains a 10-50% by weight of multifunctional alcohol nonionic surfactant. The multifunctional alcohol nonionic surfactant is glyceryl mono alkylate, glyceryl trialkylate, sorbitan mono alkylate, sorbitan trialkylate of 12-18 of carbon atom or castor oil. The emulsion composition contains no more than 25mol% of polyethylene oxide. Further, the emulsion composition contains isoalkyl alkylate, multifunctional nonionic surfactant, aliphatic acid compound, polyethylene oxide ether compound and nonionic surfactant.

Description

An emulsion composition for nylon drawn yarn production.

The present invention is used as a yarn for garments, and relates to an emulsion composition for producing nylon stretch yarn having excellent yarn binding and smoothness even when a small amount of arcs are attached during sizing.

Conventionally, a method of manufacturing nylon stretched yarn by stretching nylon unstretched yarn in the same process as FIG. 1 is widely used. Looking in more detail in the prior art, the nylon undrawn yarn (1) is tanned with an emulsion roller or emulsion jet (2), and then stretched and heat-set between the first roller roller (3) and the second roller roller (4), Nylon stretched yarn is manufactured by winding after entanglement with 5-20 pieces / m of yarn focused entanglement (water tank measurement standard) in the main interlacer device 5.

In such a prior art, the emulsion pick-up rate (hereinafter referred to as OPU) must be maintained at a very high level in order to improve the post-process passability such as weaving. Specifically, the emulsion is attached by 0.7 to 1.2% of the weight of the yarn. In this way, a large amount of yarn attached to the yarn may cause deterioration of the working environment due to scattering of the emulsion during air entrainment, which is a post-process. In the sizing process, the adhesion of the arc may be impeded or the oil may fall into the reservoir and contaminate the arc. However, when the yarn pick-up rate (OPU) is less than 0.7%, the friction lowering ability of the hot-bubble is weakened, and the post-process passability such as weaving is worsened. OPU) is adjusted to 0.7 ~ 1.2% level.

In the prior art, emulsion compositions containing various components such as alkyl alkylates as main components are used.

An object of the present invention is to provide a new emulsion composition that does not lower the concentration and smoothness of the yarn even if the emulsion pick-up rate in the nylon stretch yarn production and the low adhesion adhesion during the sizing process.

The present invention is to provide an emulsion composition for producing nylon stretch yarn that can reduce the yarn pick-up ratio (OPU) and arc adhesion rate without lowering the smoothness and focusability of the yarn to reduce the yarn manufacturing cost, and improve the quality of the fabric. do.

1 is a schematic view of a nylon filament stretched yarn manufacturing process of the present invention.

※ Explanation of main parts in drawings

1: nylon filament unstretched yarn 2: emulsion roller or emulsion jet

3: first gear roller 4: second gear roller

5: main interlacer device 6: winding bobbin

The present invention relates to an emulsion composition for preparing nylon stretch yarn used as a warp yarn during fabrication after semi-sizing treatment.

Hereinafter, the present invention will be described in detail.

The emulsion composition of the present invention is characterized by containing 10 to 50% by weight of a polyalcohol-type nonionic surfactant.

The polyalcohol-type nonionic surfactant lowers the coefficient of friction between the yarn and the metal and adjusts the coefficient of friction between the yarn and the yarn to improve the manufacturing operation and post-processability. If the friction coefficient between the yarn and the yarn is high, the yarn's concentration can be increased to give uniform entanglement in the air entanglement process. However, if the friction coefficient between the yarn and the yarn is too high, there is a risk of a lot of wool and trimming.

Therefore, in the present invention, the polyalcohol-type nonionic surfactant content is adjusted to 10 to 50% by weight. If it is less than 10% by weight, the operation efficiency and the post-processing improvement effect is reduced, and if it exceeds 50% by weight, there is a problem that a lot of cattle and trimming occurs. More preferably, the polyalcohol-type nonionic surfactant content is adjusted to 25 to 40% by weight.

Examples of the polyalcohol-type nonionic surfactants include glyceryl monoalkylate, glyceryl trialkylate, sorbitan mono alkylate, sorbitan trialkylate, castor oil, etc. having 12 to 18 carbon atoms of alcohol.

Polyethylene oxide may optionally be added to the emulsion composition of the present invention. When adding a polyethylene oxide adduct, it is preferable to adjust their content to 25 mol or less.

The emulsion composition of the present invention is, for example, 45% by weight of (iso) alkyl alkylate, 36% by weight of polyhydric nonionic surfactant optionally with polyethylene oxide, 2% by weight of aliphatic acid compounds, polyethylene oxide ether compounds It may be composed of 10% by weight and 7% by weight of anionic surfactant. The emulsion composition of the present invention is preferably used in the aqueous emulsion state of 2 to 15% during the weaving process, wherein the emulsion pickup rate (OPU) is adjusted to 0.4 to 0.6%. A method for producing nylon stretched yarn using the emulsion composition of the present invention will be described in detail with reference to FIG. 1.

First, the present invention, the spun nylon undrawn yarn (1) is treated with an emulsion roller or emulsion jet (2) of the emulsion composition of the present invention. It is preferable to adjust so that the pick-up rate of an emulsion at the time of spinning emulsion may be 0.4 to 0.6%. Such emulsion pick-up rate is very low compared with the prior art. Lower emulsion pick-up means less amount of emulsion attached to nylon undrawn yarn. In the present invention, the emulsion pick-up rate (%) is calculated as follows.

Emulsion Pickup Rate (%) = × 100

If the emulsion pick-up rate is less than 0.4% during the tanning process, the post-process passability worsens, and if it exceeds 0.6%, there is a problem that the working environment is contaminated with the emulsion scattering during air jamming and the air is uneven.

In general, when the amount of oil adhered to the nylon unstretched yarn decreases, the passability of the post process such as weaving becomes poor. Therefore, the present invention is characterized in that 10 to 50% by weight of a polyhydric alcohol-type nonionic surfactant is added to the emulsion composition in order to solve the problem of deterioration of the post-process passability due to the decrease in the oil adhesion amount.

Next, the stretched and heat treated nylon unstretched yarn is stretched and heat treated between the first gourd roller 3 and the second gourd roller 4, and the stretched and heat treated nylon drawn yarn is entangled in the main interlacing device 5. After winding up the winding bobbin (6) to produce a nylon drawn yarn. At this time, in order to increase the number of yarn entanglement, it is preferable to adjust the relax rate between the second roller 4 and the take-up bobbin 6 to 2 to 6%. In addition, in order to smoothly entangle the yarn under a high remission rate, it is preferable that the roughness of the second roller roller 4 is 2 to 8 mu. In addition, in order to improve the entanglement effect, the diameter of the inner hole for the yarn passage should be 1.0 mm or more, and the number of the air supply holes should be limited to 1 to 2, so that the air supply is concentrated. In the main entanglement, the air pressure is 2 to 6 kg. It is good to adjust to / cm 2. Next, the wound nylon drawn yarn is sized in a conventional manner. At this time, the adhesion amount is set to 50 to 60% lower than the conventional level.

The nylon stretched yarn manufactured by the method described above reduces the cost of yarn production because of the low amount of oil deposition and the amount of arc adhesion. In particular, the adhesive bond rate is lowered to 50 to 60% compared to the prior art, the fabric separation phenomenon due to the generation of inclined lines during weaving or incomplete de-lamination during refining can be reduced to produce a fabric with excellent appearance and quality. In addition, the generation of fumes (Fume) during the sizing is reduced, weaving and sizing work efficiency is also increased. On the other hand, the nylon stretched yarn of the present invention has an excellent adhesiveness and smoothness of at least the yarn adhesion amount and arc adhesion rate, and thus has good post-process passability such as weaving.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited only to the following examples.

Example 1

An emulsion composition having the composition ratios in Table 1 was prepared and then slowly stirred in water at 25 ° C. to prepare a 10% aqueous emulsion. The emulsion composition was treated with semi-Dull nylon unstretched yarn of 70 denier / 24 filament so as to have an emulsion pick-up rate of 0.4% with an emulsion roller, and 1.23 in a second gourd roller with a first micro roller and roughness of 2μ. Stretched and heat-set at an elongation rate of a ship, and entangled with an air pressure of 2 kg / cm 2 with a main interlacer device under a condition of 2% reduction rate, and wound up to prepare nylon filament drawn yarn. At this time, the inner hole diameter of the yarn passing through the main interlace device is 1.2mm and the number of air supply holes is one. After the prepared nylon drawn yarns were sized so that the arc adhesion rate was 3.1%, they were used as the weft yarns to prepare a plain weave fabric. The results of evaluating the physical properties of the prepared emulsion composition, the properties and processability and fabric quality of nylon stretched yarn are shown in Table 2.

Examples 2 to 3 and Comparative Examples 1 to 3

Nylon stretched yarn and fabric are prepared in the same manner as in Example 1, except that the composition components and composition ratio of the emulsion composition, the oil pick-up rate in the manufacture of nylon stretched yarn, and the adhesive adhesion rate in the sizing are changed as shown in Table 1. The results of evaluating the physical properties of the prepared emulsion composition, the properties and processability and fabric quality of nylon stretched yarn are shown in Table 2.

Table 1 Conditions

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Emulsion composition (% by weight) (Iso) alkyl alkylates 45 45 45 53 60 65 Glyceryl Mono Alkylate 8 17 15 5 - - Sorbitan trialkylate 15 - 5 - - 5 Polyethylene Oxide Addition Caster Oil 10 15 15 8 12 5 Polyethylene oxide alkylates 3 4 - 15 10 5 Aliphatic acid 2 - 3 - 3 3 Polyethylene oxide ether 10 12 10 12 8 10 Anionic Surfactants 7 7 7 7 7 7 Emulsion Pickup Rate (%) 0.4 0.5 0.6 0.95 1.12 1.25 Arc adhesion rate at sizing (%) 3.1 3.5 3.2 9 10 8

Table 2 Property and Fairness Evaluation Results

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 emulsion Stock Stability Good Good Good Good usually Good Emulsification stability Good Good Good usually Good usually Drawing company Yarn-Yarn Friction Coefficient 0.3537 0.3485 0.3608 0.3235 0.3352 0.3102 The number of bridges 29 34 36 12 9 11 House 115 122 126 85 78 83 fabric Inclined Lines None None None Occur Occur Occur Floor cracking phenomenon None None None Occur Occur Occur Emulsion scattering during the process Less Less Less usually Many Many

The physical property evaluation method in this invention is as follows.

Solution stability: Evaluate after standing at room temperature for 1 week.

Emulsification stability: 10% emulsion is evaluated after leaving for one day at 30 ℃ after preparation.

Emulsion pick-up rate (%) = × 100

· Emulsion scattering: Visually discriminate in the process.

Yarn-to-yarn friction coefficient: DuPont method evaluates at 0.04 grams per denier and 0.016 m / min.

Concentration: Nylon stretched yarn is measured at 60 revolutions per minute and 50g load using a TEM foam tester (Eiko Co., Ltd.).

House adhesion rate (%) = × 100

Number of bridges (CF): Measured using the Rotschild measuring device (model name R-2070) of Rothschild, Switzerland. The principle recognizes as a point of entanglement when a tension over a predetermined threshold tension is detected through a needle penetrating the center of thread that travels at a traveling speed of 10m / min. The critical tension T ₁ is set in grams of [0.1 × total yarn fineness (denier) + single yarn fineness (denier)] grams.

The use of the emulsion composition of the present invention in the production of nylon stretched yarn can lower the oil pick-up rate (OPU) and the arc adhesion rate without lowering the yarn binding and smoothness. As a result, it is possible to prevent the contamination of the working environment due to the scattering of the excessively adhered emulsion, it is also possible to improve the uniformity of air entanglement. In addition, since the amount of emulsion and arc is reduced, manufacturing cost is reduced, and the adhesion rate of the arc is low, which prevents the occurrence of cracking of the fabric (jiwara) due to the removal of inclined lines or incomplete arcs during refining, thereby improving the fabric quality.

Claims (3)

10-50% by weight of a polyalcohol-type nonionic surfactant is contained. The emulsion composition for producing a nylon stretched yarn according to claim 1, wherein 25 mol or less of polyethylene oxide is added. The method according to claim 1, wherein the polyhydric alcoholic nonionic surfactant is glyceryl mono alkylate, glyceryl trialkylate, sorbitan mono alkylate, sorbitan trialkylate or castor oil having 12 to 18 carbon atoms of alcohol. An oil agent composition for nylon drawn yarn production.