KR20110054695A - Process of spining nylon 6/cation dyeable nylon 6 mixed filament for melange tone ligtht fabric - Google Patents

Abstract

PURPOSE: A method for spinning filament by uniform filament blending is provided to express various color effect and to apply fabric into sports wear or women's clothing. CONSTITUTION: A method for spinning filament by uniform filament blending comprises: a step of melting each nylon 6 polymer in two extruders and supplying to one spinneret; a step of passing fused/spun nylon 6 thread line and alkaline dye nylon 6 thread line through a thread line cooling section of the spinneret and cooling at 15-18°C; a step of supplying oil; and a step of drawing between first and second godet rollers and rolling.

Description

 Process Mixed Spinning Nylon 6 / Cation Dyeable Nylon 6 Mixed Filament For Melange Tone Ligtht Fabric}

The present invention relates to a method for uniformly blending by spinning two kinds of nylon polymers simultaneously through the same spinneret, and more particularly, to a spinning method of nylon 6 filaments and basic dye salted nylon 6 filaments.

In recent years, the trend of nylon products in the textile industry has become thinner and lighter, and these nylon lightweight paper products have become a big boom in the sportswear market. The sportswear market is being developed for golf wear, windbreak, down proof, mountain climbing, and various sports products using nylon materials having excellent high color development, resilience and strength characteristics.

Meanwhile, in response to various demands of consumers, a large amount of melange fabrics having a dichroic effect have been developed and attracted much attention in the market. To date, melange material is produced by special composite use of melange by PCD, Tadonia-centered composite processing, interlacing technology, and spinning blending technology with PET yarn, and mainly used for pants and suit. have. PCD (Cationic dyeable PET) fiber used in the composite of melange material began to be used to produce new material for composite processing of composite processing in the 1970s. To date, various composite processing and interlacing technology using single materials made from yarn makers It is produced by special combination use.

On the other hand, unlike conventional polyester melange fabrics in terms of use, there are cases where a melange fabric is required in nylon. In order to obtain such a nylon melange fabric, a fabric having a dichroic effect of 100% nylon composition can be obtained as a posterior dye by mixing a basic dye saltable nylon yarn having a different dyeing property and a general nylon yarn.

In order to develop such a nylon dichroic melange material, a fabric having a dichroic effect in the form of a teaching fabric was developed by using 6 nylon yarns as a warp yarn and a basic dye saltable nylon yarn as a weft array. The lack of regularity of the tone expression caused a drawback that might look like a defect.

In addition, we developed ATY (Air Texturing Yarn) or Interlace composite weaving method in the processing stage to enable uniform mixed fiber mixing of basic dye chlorinated nylon yarn and 6 nylon yarns to express dichroic melange tone. The problem of fabric light weight failure occurred.

As such, in the teaching fabric, ATY (Air Texturing Yarn) and Interlace composite yarn method, there is a problem that it is difficult to apply to the development of lightweight fabrics due to the limitation of color expression and the limitation of fine detailing.

Therefore, the present invention solves the problems of the prior art by using two kinds of nylon 6 polymers having different dyeing properties to achieve a uniform blending in the spinning step to give a dichroic melange effect even when applied to nylon lightweight textile products It is a technical problem to provide fine island material.

Therefore, in the present invention, the nylon 6 polymer and the basic dye salt type nylon 6 polymer are respectively melted by two extruders and then supplied to one spinneret,

Through the spinneret, the nylon 6 thread and the basic dye salted nylon 6 thread were melt spun at a spinning temperature of 255 to 270 ° C. and spinning speed of 3900 to 4200 m / min. After cooling with the cooling wind of the oil impregnated and concentrated, and stretched between the first gourd roller and the second gourd roller at an elongation ratio of 1.8 to 2.2, and then wound nylon 6 / basic dyestuff for light fabrics Provided are a method for uniformly blending spun yarns of salted nylon 6 filament yarn.

Hereinafter, the present invention will be described in more detail.

The present invention relates to a method for spinning two kinds of nylon filaments while uniformly mixing them by spinning and stretching two kinds of nylon polymers simultaneously through the same spinneret, and in particular, nylon 6 filaments and basic dye salted nylon 6 A method for spinning filaments.

The homogeneous mixed spinning method of the present invention comprises a melting step, spinning step, cooling step, stretching step and winding step as shown in FIG. In the melting step, the nylon 6 chip and the basic dye salted nylon 6 chip are melted by the extruder for nylon 6 and the basic dye salted nylon 6 extruder, respectively and transferred to a separate polymer supply conduit. It is then supplied to the next stage, the spinning stage. The extruder may use an extruder used for ordinary synthetic fiber spinning, and may melt the two chips by adjusting appropriate melting conditions according to the type of chips to be injected.

The nylon 6 polymer is a nylon 6 polymer having a relative viscosity of 2.4 to 2.7, a water content of 100 to 500 ppm, a melting temperature of 210 to 225 ° C, and a glass transition temperature of 35 to 45 ° C, and the basic dye salted nylon 6 polymer has an intrinsic viscosity of 2.4 to 2.7 ° C. 2.7, using a basic dye salt type nylon 6 polymer having a water content of 100 to 500 ppm can stabilize the spinning.

In particular, the temperature of the molten nylon 6 polymer supplied to the spinneret is 270 ~ 275 ℃, the basic dye salt type nylon 6 polymer temperature is preferably 275 ~ 280 ℃, the basic dye salt type nylon 6 polymer temperature is If it is lower than 275 ℃ there is a disadvantage in that the radioactivity is not good due to the generation of short break during spinning, if it exceeds 280 ℃ may cause thermal deformation of the polymer. The weight ratio of the nylon 6 polymer and the basic dye saltable nylon 6 polymer is preferably adjusted to be 40: 60 to 60: 40. When the content of the basic dye salted nylon 6 polymer is less than 40% by weight, the nylon 6 component is excessive. Dichroic properties of the final product is lowered and the melange effect can not be improved after dyeing, and when it exceeds 60% by weight, the dichroic effect is not clearly expressed.

The molten nylon 6 polymer and the basic dye saltable nylon 6 polymer are respectively supplied to the same spinneret 5 and spun at the same time, and the spinneret is spun using the two polymers designed to not be mixed with each other. In each of the spinnerets 11 and 12 through which the liquid is discharged, only one type of spinning liquid should be discharged. Using the spinneret designed as shown in Figure 2 can be two kinds of spinning liquid is injected into the spinneret inlet (3,4) to be discharged through each spinneret (11,12).

The spinning temperature in the spinneret is adjusted to 255 ~ 270 ℃ suitable for spinning the two kinds of nylon at the same time.

Nylon 6 yarns and basic dye salted nylon 6 polymer yarns simultaneously melt-spun at a spinning speed of 3900 to 4200 m / min through the spinneret are cooled while passing through the thread cooling section 6 under detention as in a conventional method. In the present invention, by cooling with a cooling wind of 15 ~ 18 ℃ to cool the nylon 6 thread and basic dye salt type nylon 6 thread.

The filaments 7 which are solidified while passing through the thread cooling section are concentrated while giving oil to mix nylon 6 filaments and basic dye salted nylon 6 filaments.

Subsequently, the filaments are stretched to a draw ratio of 1.8 to 2.2 to ensure process passability while passing through the first gourd roller 8 and the second gourd roller 9 and then wound up in the take-up roller 10. If the draw ratio is less than 1.8, the sufficient tensile strength properties of the filament are not reflected, and if the draw ratio is higher than 2.2, there may be a problem in which the raising and loop occurs on the surface of the wound filament.

The temperature of the first gourd roller is 20 ~ 50 ℃, the temperature of the second gourd roller is preferably 110 ~ 130 ℃, when the temperature of the first gourd roller exceeds 50 ℃ in the first gourd roller (HUNTING ) There is a problem that the workability worsens due to the phenomenon, and when the temperature of the second gourd roller is less than 110 ℃, there is a problem that the uniform heat setting does not occur. May occur.

The filament prepared by the uniform mixed fiber spinning method of the present invention is a mixed filament in which the nylon 6 filament and the basic dye salted nylon 6 filament are mixed, and are lightweight, have excellent tear strength, and have excellent dichroic effect after dyeing. .

Therefore, according to the homogeneous mixed fiber spinning method of the present invention, it is possible to uniformly blend two different nylon filaments, and has a dichroic effect not found in conventional nylon fabrics during fabric manufacturing, and has excellent tearing strength, and It is softer than the touch (SOFT), and the fabric is light, so it is not only excellent in fit but also can provide a high-performance fabric with excellent water resistance, water repellency, and color fastness. It can be widely applied. In addition, high productivity can be achieved through color diversity and shortening of the production process.

The following examples are given as non-limiting examples of the method of uniform mixed spinning of nylon 6 / basic dye salt type nylon 6 filament yarn of the present invention.

Example 1

Table 6 shows the properties of nylon 6 polymer having a relative viscosity of 2.45 and a water content of 400 ppm, and a basic dye salt type nylon 6 polymer having an intrinsic viscosity of 2.5 and a water content of 500 ppm by two extruders, respectively. The temperature was 270 ° C., and the basic dye salted nylon 6 polymer was 275 ° C., and the weight ratio of the nylon 6 polymer and the basic dye salted nylon 6 polymer was 50:50 and supplied to one spinneret. The nylon 6 yarn and basic dye salted nylon 6 yarn which were melt spun simultaneously at 269 ° C. at a spinning speed of 4000 m / min were cooled with a cooling wind of 17 ° C. while passing through the yarn cooling section under detention, Between the first gourd roller having a temperature of 50 ° C. and the second gourd roller having a temperature of 120 ° C., followed by stretching at a draw ratio of 2.015, followed by winding up to form a nylon 6 / basic dye salted nylon 6. The cement company La (N / NCD SDY 38/36) were prepared.

The properties of the prepared nylon 6 / basic dye salted nylon 6 filament yarn are shown in Table 2 below.

division Nylon 6 Chip Basic dye salt type nylon 6 chip Tm (℃) 220 220 Tg (占 폚) 50 50 Dyeing temperature (℃) 100 100 dyes Acid dyes Basic dyes Polish SD, FD, BR BR

division Count (d) Cutting strength (g / d) Elongation at break (%) Wet Heat Shrinkage (%) Example 1 37.9 6.22 42.27 14.5

After weaving the paper fabric with the fabric design conditions as shown in Table 3 in the fabric weaving yarn 500 R.PM in the weft direction from the Air-Jet (Toyoda) high-density loom with the prepared nylon 6 / basic dye salt type nylon 6 filament yarn In order to dye basic dye-stained nylon 6 filament part, fabric is added at room temperature, and then buffered and PH regulator is added to the bath to mix to make medium PH of 5.5. After sequentially administering the dye, the temperature was raised to room temperature, and the dyeing was completed at 98 ° C. for 40 minutes, followed by cooling and washing with water. Then, a buffer and a pH regulator were added to a bath to dye nylon 6 filament. Adjust the pH to be 4 in the dye bath, and then add a homogenizer, anti-inflammation agent and dye in sequence, dye for 40 minutes at 98 ℃, cool, wash, and fix the acid dye. Fixation treatment was performed and washed / dried to complete dyeing. Physical properties of the finished fabric are shown in Table 4.

slope Weft Slope Weft density group Gender Width (inches) Nylon6 SDY 20/7 N / NCD SDY 38/36   13750 120 Plain weave 62

Item unit Measure Assessment Methods  Fabric weight g / m ² 55 KS K 0514  Air permeability cm3 / cm3 / sec 0.1 ASTM D737  Tear strength N 2.5 KS K 0535  Water repellency class 5 KS K 0590  Fastness to washing. class 4 KS K 0430  Daylight fastness class 4 ISO 105 B02

Comparative Example 1

After using a nylon 6 yarn (20d / 7fila) as a slope and using a basic dye salt-soaked nylon 6 yarn (40d / 13fila) as a weft yarn was prepared, dyed in the same order as in Example 1, the surface photograph of the fabric Is the same as FIG.

1 is a process chart of the uniform mixed fiber spinning of the present invention,

Figure 2 is a bottom view of an example spinneret used in the uniform mixed spinning of the present invention,

Figure 3 is a photograph of the fabric surface of Example 1 woven and dyed with a nylon 6 / basic dye salt type nylon 6 filament yarn for dichroic lightweight fabrics of the present invention,

Figure 4 is a photograph of the surface of the fabric of Comparative Example 1 weaving using a nylon 6 yarn as a slope and using a basic dye saltable nylon yarn as a weft.

[Description of Drawings]

1: Extruder for nylon 6

2: Extruder for basic dye salt type nylon 6

3, 4: polymer supply conduit

5: spinneret 6: thread cooling section

7: Filament 8: First High Roller

9: 2nd go 뎃 roller 10: Winding roller

11, 12: spinneret

Claims (4)

After the nylon 6 polymer and the basic dye salted nylon 6 polymer were melted by two extruders, each was fed to one spinneret. Through the spinneret, the nylon 6 thread and the basic dye salted nylon 6 thread were melt spun at a spinning temperature of 255 to 275 ℃ and spinning speed of 3900 to 4200 m / min. After cooling with the cooling wind of the oil impregnated and concentrated, and stretched between the first gourd roller and the second gourd roller at an elongation ratio of 1.8 to 2.2, and then wound nylon 6 / basic dyestuff for light fabrics Homogeneous mixed spinning method of chlorinated nylon 6 filament yarn. According to claim 1, wherein the nylon 6 polymer is a nylon 6 polymer having a relative viscosity of 2.4 to 2.7, water content of 100 to 500ppm, the basic dye salt type nylon 6 polymer is a basic dye salt having a intrinsic viscosity of 2.6, water content of 100 to 500ppm A homogeneous mixed spinning method of nylon 6 / basic dye salting type nylon 6 filament yarn for dichroic lightweight fabrics, characterized in that it is a type nylon 6 polymer. The method of claim 1, wherein the temperature of the molten nylon 6 polymer supplied to the spinneret is 270 ~ 275 ℃, basic dye salt type nylon 6 polymer temperature is 275 ~ 280 ℃, nylon 6 polymer and basic dye salt type The weight ratio of the nylon 6 polymer is 40: 60 ~ 60: 40 uniform mixed fiber spinning method for nylon 6 / basic dye salt type nylon 6 filament yarn for dichroic lightweight fabrics, characterized in that. According to claim 1, wherein the temperature of the first gourd roller is 20 ~ 50 ℃, the temperature of the second gourd roller is 110 ~ 130 ℃ characterized in that the dichroic lightweight fabric nylon 6 / basic dye salted nylon 6 Homogeneous mixed spinning method of filament yarn.

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