KR100610060B1 - Manufacturing method of polyester high stretched dyed yarn - Google Patents

Abstract

The present invention is a method of manufacturing a twisted dyeing yarn produced by spinning and dyeing process (dyeing) after spinning the polyester fiber, after the dyeing process is reburned, high elasticity

It relates to a method for producing a flammable dyed yarn.

In the manufacturing method of the present invention, the draw ratio is equal to or less than 50% of the draw ratio of the same or lower than 50% compared to the conventional burning conditions (including 1 heater products and 2 heater products), and the draw ratio to the dyed yarn manufactured by dyeing as described above. 1.01: 1 to 1.6: 1, and the second flame retardation is carried out by increasing the softening water and temperature depending on the application by about 1-30% than the conventional flammable method conditions, and high tensile flammable dyed yarn having better tensile strength and non-aqueous shrinkage rate than the conventional dyed yarn. Because it is manufactured, it is possible to manufacture a product that is excellent in elasticity and excellent quality knot-free large packaging (large packaging).

Polyester, Combustible, Dyeing, Flammable Dyed, Draw Ratio, High Stretch Yarn

Description

MANUFACTURING METHOD OF POLYESTER HIGH STRETCHED DYED YARN}

1 is a photograph comparing the shrinkage of the polyester high stretch flammable yarn of the present invention.

The present invention relates to a method for producing a polyester high-strength flammable dyed yarn, and more particularly, in the method for producing a flammable dyed yarn manufactured by spinning and dyeing (dyeing) a polyester fiber after spinning, after the dyeing step The present invention relates to a method for preparing a polyester high stretch flammable yarn which is capable of providing a high-strength, large-knot-free large-capacity packaging, and is capable of producing a product having excellent elasticity and uniform quality.

Conventionally, a method for producing a flexible dyed yarn having excellent elasticity is largely classified into three types. In the first method, a twisted yarn (False Twist Yarn) is twisted to make a skein (Hank), dyed (dyed) in a contracted state, and then rewinded. Since several processes are performed: false twisting → twisting → skein → shrinkage → dyeing → rewinding, many hands are involved and the increase in the number of processes leads to a price increase and quality deterioration. In addition, depending on the degree of compression of the yarn inside or outside the dyeing machine or the yarn (Yarn), there is a problem of deterioration of quality due to the elastic nonuniformity due to the large difference in stretching, there is a problem that the packaging efficiency is lowered by 0.5kg or less per knot.

The second method is known by the inventor of the Republic of Korea Patent No. 50511 bar, when it is false (twist) to give a shrinkage at the time of dyeing by lowering the winding density like cotton bats, elasticity by shrinked crimp (Crimp) How to grant. However, the method has a limitation in winding loosely like a cotton bat, so that it is not given sufficient elasticity, and it causes a difference in stretching and dyeing unevenness depending on the degree of compression of the cheese during dyeing, and a weight of 1 kg per bobbin. It can only be wound up and down before and after, which makes large packaging of knot-free large capacity difficult.

The third method is to perform Dope Dyed by increasing Twist / m and Heating Zone Temperature when it is false Twist. Color and lot production are not possible. In particular, the recent trend has to satisfy the needs of consumers by supplying a small amount of multiple varieties quickly, the method can not respond to market needs changes due to the disadvantage that it can not be manufactured quickly.

Accordingly, the present inventors endeavored to solve the problems of the conventional manufacturing method, resulting in excellent elasticity and uniform stretch quality of various colors and lots desired by the consumer, weight 2kg per bobbin In order to enable the above-mentioned large-capacity large-capacity packaging (Large packaging) in order to enable the manufacturing of high-stretch dyeing yarn, the manufacturing method of the combustible dyeing yarn is usually manufactured by the combusting process and dyeing process (dye) after spinning the polyester fiber. In the present invention, the present invention was completed by adding a reburning step after the dyeing step to confirm that the manufactured dyeing yarn had a high tensile strength and a non-aqueous shrinkage rate superior to those of the prior art.

It is an object of the present invention to provide a method for producing polyester flammable dyed yarn imparted with high elasticity.

In order to achieve the above object, the present invention is a method of producing a dyed yarn produced by the twisting process and dyeing process (dye) after spinning the polyester fibers, the draw ratio of the prepared yarn after the dyeing process 1.01: 1 to 1.6 Provides a method for producing a polyester high stretch flammable dyed yarn characterized in that the reburning to 1 :.

The method for producing a highly stretchable twisted dye yarn of the present invention is 1) the first burn with the same draw ratio or less than 50% less than the conventional burn conditions (including 1 heater and 2 heater products), 2) dyeing (dyeing) , 3) Secondary flammability with a draw ratio of 1.01: 1 to 1.6: 1 in the dyed yarn produced by the dyeing.

Secondary combustion of the present invention is carried out by increasing the soft water (Twist / m) and the temperature (Heating Zone Temperature) by about 1 to 30% than the conventional combustion conditions, more preferably 5 than the general work life (Twist / m) It is about 30 to 30% high, and at this time, 200-230 degreeC of temperature is preferable.

In the present invention, when re-burning after dyeing, oiling in the yarn feeding zone is preferable.

Hereinafter, the present invention will be described in detail.

The present invention is characterized in that in the production method of the twisted dyeing yarn produced by the spinning process and dyeing process (dye dye) after spinning, it is characterized by re-burning after the dyeing process, more specifically 1) false twist) 1st flammable with the same draw ratio or less than 50% within the method conditions (including 1 and 2 heater products), 2) dyeing, and 3) dyed dyed yarn 1.01: 1 to 1.6: 1 It consists of secondary combustion.

In general, the manufacturing principle of false twisted yarn is to use the thermoplastic properties of synthetic fibers, and after the heat is heated in a state in which twist is applied to the filament yarn manufactured after spinning, Twisting and de-twisting are performed simultaneously in the combustor to give crimps. Long fibers that are twisted by processing the surface of yarns produced in this way are referred to as draw textured yarns (hereinafter referred to as "DTY").

At this time, the characteristics of the present invention is a method of manufacturing a dyed yarn produced by the spinning process and dyeing process after spinning the polyester fiber, by re-twisting after the dyeing process, giving a crimp that is stretched when dyed again to give high elasticity It is to prepare a flammable dyed yarn. The high stretch flammable dye yarn of the present invention has a uniform and high crimp (Crimp) yarn, there is an advantage that can be largely wound to more than 2kg per failure without knots.

An important requirement for flammable conditions is a combination of Twist, Temperature, Tension, and Time to achieve a stable Twist Yarn = Stretched Yarn = Textured Yarn. In particular, soft water (T / M) and temperature (Temperature) acts as a factor in the expansion and contraction. At this time, the preferred temperature for producing a high stretched yarn (High Stretched Yarn) is preferably in the range of the contact temperature to the fiber 200 ~ 230 ℃ degree, Twist is moor, pharmacist or tight spot (Tight Spot) Raising to the maximum is desirable unless this occurs.

In the case of flammable soft water, when the twist angle (Twist) is conventionally set as θ, the relationship between the soft water, the denier and the density is usually expressed as in Equation 1 below.

(In the above, D is denier, T is the number of combustibles per meter, and ρ is the fiber density.)

Therefore, it can be understood that the secondary combustible soft water in the present invention is set to about 1 to 30% higher than the conventional combustible soft water T determined by the above formula.

In the present invention, the primary combustion process is carried out by adjusting the draw ratio within the same or less than 50% than the conventional combustion conditions. Conventional flamming conditions vary the draw ratio according to POY (Partially Oriented Yarn) denier. If the spinning speed is high, the draw ratio is low and if the spinning speed is slow, the draw ratio is high. In the case of conventionally produced polyester POY (Partially Oriented Yarn), the draw ratio is usually performed at 1.5 to 1.9: 1. The stretching ratio of the present invention is made equal to or less than 50% of the stretching ratio, thereby increasing the residual oil elongation. At this time, if the draw ratio is excessively performed, hair dye is caused due to the lack of residual residue during the second twisting after dyeing.

Afterwards, the dyeing process should be handled to prevent the collapse of the four layers, unite filament or cutting, and should be thoroughly washed with reduction, acid treatment, softening and washing with water, and the second flammable process by selecting dyes with excellent sublimation fastness. The dyeing residues in the coating prevent flammability, as well as migration after weaving and weaving.

In the present invention, the secondary twisting process is a step of providing high elasticity to the false twisted yarn by reapplying the crimp unfolded during dyeing, and second twisting at a draw ratio of 1.01 to 1.6: 1 to the dyeing yarn obtained after the dyeing step. .

The idea of performing such secondary burning is conventionally difficult to think of since the dyeing process (dye) is completed as a final product.

In addition, the secondary combustion is performed by increasing the soft water (Twist / m) and the temperature (Heating Zone Temperature) by about 1 to 30% than the conventional general flammable conditions, more preferably in the soft water general work (Twist / m) It is working to raise about 5 to 30% more, and temperature is preferable 200-230 degreeC.

In the present invention, oiling in the dyeing yarn feed zone at the time of secondary combustion is also preferable in view of concentrating the yarn and preventing temporary connection. The oil agent in the oil ring is a kind of lubricating oil, and it is sufficient if it is a conventional one used in textile processing in the industry.

Hereinafter, the present invention will be described in detail by way of examples.

The following examples are merely illustrative of the present invention, but the scope of the present invention is not limited to the following examples.

<Example 1>

Polyester processed yarn (DTY 150D / 48F Polyester filament) was processed under the following conditions, to prepare a high stretch flammable dyed yarn.

Stage 1: Primary Flammability Conditions

Execution condition Elongation ratio 69% (1.69: 1) 1st heater temperature 195 ℃ Training (Twist / m) V / R (Belt Type): 1.45 2nd overcharge rate 9.8% 2nd heater temperature 175 ℃ Winding supercharge rate 5.0% Four 590 m / min Combustor Murada H type

Step 2: dyeing process (dye)

Execution condition pH 4.5 Elevated temperature 3 ℃ / min Final temperature 130 ℃ Leveling time 40 minutes Cooling time 5 ℃ / min Reduction cleaning and chemical processing temperature 80 ℃

Phase 3: Second Combustible Condition

Execution condition Elongation ratio 0.86% (1.086: 1) 1st heater temperature 220 ℃ Training (Twist / m) 2914 Overfeed rate 2.0% Four 91 m / min Combustor CS 12

<Example 2>

A polyester processed yarn (DTY 100D / 36F Polyester filament) was processed under the following conditions to prepare a highly stretchable dyed yarn.

Stage 1: Primary Flammability Conditions

Execution condition Elongation ratio 73% (1.73: 1) 1st heater temperature 180 ℃ Training (Twist / m) V / R (Belt Type): 1.43 2nd overcharge rate 9.8% 2nd heater temperature 160 ℃ Coiling Supercharge Rate 6.0% Four 590 m / min Combustor Murada H type

Step 2: dyeing process (dye)

Execution condition pH 4.5 Elevated temperature 2.5 ℃ / min Final temperature 130 ℃ Leveling time 30 minutes Cooling time 4 ℃ / min Reduction cleaning and chemical processing temperature 80 ℃

Phase 3: Second Combustible Condition

Execution condition Elongation ratio 10.0% (1.1: 1) 1st heater temperature 215 ℃ Training (Twist / m) 3228 Overfeed rate 3.0% Four 104 m / min Combustor CS 12

Experimental Example 1

The physical properties of the polyester high stretch flammable dyed yarn of the present invention prepared in Example 1, the polyester dyed yarn prepared in Korean Patent No. 551111 and the conventional general dyed yarn of the present inventors were measured as follows.

1. Measurement of Shrinkage

The polyester high stretch flammable yarn of the present invention prepared in Example 1, the polyester dyed yarn prepared in Korean Patent No. 50911, and general dyed yarn commonly used in the market were classified into the following experimental groups.

(a) the dyed yarn of Example 1 constricted in steam,

(b) the dyed yarn of Example 1 spontaneously retracted in an unfocused state,

(c) the dyed yarn of Example 1 sprinkled naturally in a focused state,

(d) polyester dyed yarn of Korean Patent No. 50511 contracted to steam;

(e) polyester dyeing yarn of Korean patent No. 50511 which is naturally preserved;

(f) general pre-dyed yarns contracted by steam; and

(g) natural preservative

At this time, after keeping the thread at 50 cm (excluding the length tied at both ends) in the tensionless state at room temperature for 24 hours, the yarn length changed state when the original yarn length and steam heat were applied for 5 minutes. Was observed. The experimental results are shown in Table 1 and FIG. 1 .

Experimental group Length before contraction (cm) Retracted Length (cm) Shrinkage (%) Shrinkage condition (a) 50 17.0 66.0 Steam heating (b) 50 15.0 70.0 Room temperature storage (c) 50 30.8 38.4 Room temperature storage (d) 50 33.5 33.0 Steam heating (e) 50 36.3 27.4 Room temperature storage (f) 50 47.4 5.2 Steam heating (g) 50 47.7 4.6 Room temperature storage

As shown in Table 1 and Figure 1, in the polyester high stretch flammable yarn of the present invention prepared in Example 1, the change in shrinkage was remarkable. Therefore, it was confirmed that high elasticity can be imparted to the polyester fiber by re-burning the polyester fiber after the spinning process and the dyeing process after spinning.

In addition, it was confirmed that the polyester fiber produced by the manufacturing method of the present invention is capable of large packaging (weight over 2kg) per bobbin without knots.

1. Property measurement

With respect to the polyester high stretch flammable yarn of the present invention prepared in Examples 1 and 2, the polyester dyed yarn prepared in Korean Patent No. 51511 and the general dyed yarn commonly used in the market, strength and elongation were measured, %) And non-aqueous shrinkage (%) were measured.

The torsion shrinkage (%) was calculated based on Equation 2 below.

The non-aqueous shrinkage percentage (%) was applied to 1500 denier (150 denier x 10 times) of Example 1 or 1000 denier (100 denier x 10 times) of Example 2 with 600 g of heavy load, and left for 1 minute. It removed, and left for 1 minute under the super load of 6g, and measured the length. Subsequently, the sample was immersed in water for 15 minutes, and then dried naturally. The dried sample was subjected to 600 g of heavy load and 6 g of superload for 1 minute to measure the length of the superload and to determine the length after non-aqueous shrinkage. At this time, the non-aqueous shrinkage percentage (%) was calculated based on Equation 3 below.

Classification Denier Strength (d / g) Elongation (%) Tension Shrinkage (%) Specific Water Shrinkage (%) 150D Example 1 3.1 19 66 23.5 Patent No.50911 3.1 21 33 13.7 General Dyeing Yarn 4.6 32 5.2 0 100D Example 2 3.1 18 67 25.0 Patent No.50911 3.0 21 35 15.1 General Dyeing Yarn 4.5 31 5.3 0

As shown in Table 2, in the case of the polyester flammable yarn of the present invention prepared in Examples 1 and 2, the strength and elongation of the yarn is polyester dyed yarn and general dyed yarn commonly used in the Republic of Korea Patent No. 5511 Although similar or somewhat lower than the case of, it was much better in terms of the tension and non-aqueous shrinkage.

As described above, the present invention

First, in the method of manufacturing a high-stretch false dyeing yarn prepared by spinning and dyeing the polyester fiber after the spinning process, after the dyeing is provided, a method for producing a high-stretching twisted yarn by re-burning,

Second, according to the manufacturing method of the high elastic flammable dye yarn, it is excellent in elasticity, uniform elasticity can be manufactured, large packaging per failure without knots, and high value-added product development of small lots Provided possible dyeing yarn,

Third, in case of the original yarn, it is suitable for mass production because of its unique process of working not only for the small lot but also for the radial line, but it is difficult to realize the absolute demand color (contiguous color desired by the consumer). On the other hand, the high stretch flammable dyed yarn of the present invention manufactured according to the high stretch flammable dyed yarn can be responded to the customer with small lot and absolute demand color.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims. .

Claims (5)

In the method of manufacturing a twist dyeing yarn prepared by spinning and dyeing process after spinning the polyester fiber, the polyester high stretch, characterized in that the second twist in the draw ratio of 1.01 to 1.6: 1 after the dyeing process Method for producing flammable dyed yarn. The method of claim 1, 1) The primary combustion with the same draw ratio or less than 50% less than the conventional combustion method conditions (including 1 heater products and 2 heater products), 2) dyeing (dyeing), 3) The method for producing the polyester high-stretch false dyed yarn characterized in that secondary dyeing at a draw ratio of 1.01 to 1.6: 1 to the dyed yarn produced by the dyeing. The method of claim 2, wherein the second high-burning, oiling process in the dyeing yarn feed zone is characterized in that the polyester highly stretchable dyed yarn. The method of claim 1 or 2, wherein the secondary combustion is performed by increasing the soft water (Twist / m) and temperature by about 1 to 30% than the conventional combustion method conditions, characterized in that the polyester high stretch flammable yarn Manufacturing method. The method according to claim 1 or 2, wherein the secondary combusting is performed at 200 to 230 ° C.

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