KR101611012B1 - False twisted yarns for a velvet fabric and manufacturing method thereof - Google Patents

Abstract

The present invention can provide a velvet which is capable of imparting luxurious gloss, having excellent bulkiness and tactile feeling, and also having improved file dropping, thereby giving added value which is much higher than that of existing ones, because it forms a pile with a false yarn using a triangular cross- The present invention relates to a method for producing a false-twist yarn for a velvet fabric, comprising the steps of: preparing a polyester polymer having an intrinsic viscosity [eta] of 0.640 to 0.670 in a triangular form The yarn is produced by using a spinneret having a cross section so that the single yarn fineness does not exceed 1.0 denier and the produced partially drawn yarn is supplied to the first heater in the combustor to produce a false yarn.
The false-twist yarn of the present invention having excellent bulkiness and gloss as described above and the method for producing the same can be obtained by using a triangular cross-section yarn to give an elegant luster to the filament yarn, The phenomenon of deterioration in quality due to the detachment of the file due to the use of flat yarn has been remarkably reduced and the object of the present invention can be achieved without complicating the process or modifying the raw material. In addition, it is possible to provide a false-twist yarn for a velvet fabric in which the soft characteristics are further improved by twisting the twisted yarn and thereby making it bulky, thereby solving the conventional problems.

Description

FIELD OF THE INVENTION The present invention relates to a false twisted yarn for a velvet fabric and a manufacturing method thereof,

The present invention relates to a false-twist yarn excellent in bulkiness and gloss and a method for producing the same, and more particularly, to a false-twist yarn excellent in bulkiness and gloss, The present invention also relates to a false twist yarn and a method of manufacturing the same, which are capable of providing a velvet capable of giving a value added which is much higher than that of the prior art.

The velvet fabric refers to a fabric in which a backing yarn is woven in a double yarn and then cut in the middle to partially or wholly protruding a pile (fine yarn) yarn, And it is treated as a considerably high quality product as a soft fabric. In addition, when the orientation of the file is indicated by the characteristics of the file, the luster can be imparted to the file to increase the surface effect, and it is possible to manifest an unlimited texture and feel due to various lengths of the file, And is widely used in women's and men's clothing and casual wear.

Polyester filaments are mainly used for the base of the fabric of the velvet fabric, and the pile fabric which directly expresses the feel and texture of the velvet is mainly used for the polyester fiber filament for the maximum effect of the feeling and wrinkling and the uprightness. It is obvious that it does not reach the touch of natural fibers such as cotton, and there has been a problem that the shape of the circular cross section and the file drop frequently occur and the quality is deteriorated. In addition, current polyester filaments have limitations in order to further enhance the quality of products by imparting gloss, imparting touch, imparting color, and the like.

Since the velvet fabric having the above-mentioned characteristics is a high-grade product and has a great effect of improving the quality, it has tried to solve the above-mentioned problems continuously from the past to the present. For example, Korean Patent Laid-Open Publication No. 2006-0123820 is directed to a method for producing a cross-section polyester fiber for velvet fabrics excellent in graininess and gloss and a velvet fabric produced by the method, Dull-type polyester fiber projected upward and downward ", and Korean Patent Laid-Open Publication No. 2006-0082598 discloses a method for producing a velvet fabric in which various colors and patterns are expressed by dyeing a cacao dye with rayon yarn .

However, although the first method described above was intended to improve glossiness and dullness of a file, the dumbbell-shaped cross-section had a disadvantage in that the skin was inferior due to its cross-section. The second method was to increase the added value of the product However, there was a problem that the price of the file was raised to rayon and the problem of file dropping still existed, and the gloss was reduced.

Korean Patent Laid-Open Publication No. 2004-0028216 discloses "a method for manufacturing a velvet fabric capable of stably maintaining the color of two-tone fabrics and thereby achieving a high quality of a fabric product". However, There is a problem of gloss and file separation, and it is also difficult to solve the problems such as the complexity of the manufacturing process, which is caused by filing yarn and fabric of polyester yarn together.

The inventors of the present invention have conducted intensive studies in order to solve the aforementioned problems, and as a result, the present inventors have found that, in a process for producing a velvet fabric, excellent glossiness, It is possible to provide a manufacturing method that does not involve the use of a catalyst.

Patent Document 1: Korean Patent Laid-Open Publication No. 2006-0123820 Patent Document 2: Korean Patent Laid-Open Publication No. 2006-0082598 Patent Document 3: Korean Patent Laid-Open Publication No. 2004-0028216

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is a primary object of the present invention to provide a yarn excellent in luster by using a yarn having a cross- The present invention provides a method for manufacturing a yarn for velvet which can maximize the appearance of the yarn and enhance the added value of the product.

Another object of the present invention is to provide a method of manufacturing a yarn for velvet, which can improve the surface of the product and the quality of the touch by improving the phenomenon that the filament yarn is removed from the base yarn.

It is still another object of the present invention to provide a false-twist yarn for a velvet fabric, wherein the yarn for a velvet fabric according to the present invention is worn in order to further exhibit a soft feel.

The present invention may also be directed to accomplishing other objects that can be easily derived by those skilled in the art from the overall description of the present specification, other than the above-described and obvious objects.

According to another aspect of the present invention, there is provided a method of manufacturing a yarn for a velvet fabric,

A polyester polymer having an intrinsic viscosity [eta] of 0.640 to 0.670 was discharged using a spinneret having a triangular cross section as a whole satisfying all of the following formulas (1) to (4) By weight or less.

0.06 ≤ ... ... ... ... ... (One)

0.10? B? 0.13 ... ... ... ... ... ... (2)

0.03? C? 0.05 ... ... ... ... ... ... (3)

0.30? D? 0.40 ... ... ... ... ... ... (4)

Where A is the slit width in mm, B is the slit longitudinal length in mm, C is the 90 degree angle from the center to the slit in mm and D is the depth of penetration in mm ].

According to another aspect of the present invention, there is provided a method of manufacturing a cement paste, characterized in that the method comprises solidifying discharged yarn by cooling wind, treating the cemented yarn with a lubricating oil below the surface of the cement, And then winding it after heat treatment.

According to another embodiment of the present invention, the manufacturing method is characterized in that the elongation of the partially stretched yarn is stretched to a level of 20 to 50%.

According to another aspect of the present invention, there is provided a method of manufacturing a false-twist yarn for a velvet fabric,

A polyester polymer having an intrinsic viscosity [eta] of 0.640 to 0.670 was discharged using a spinneret having a triangular cross section as a whole satisfying all of the following formulas (1) to (4) And the produced partially drawn yarn is supplied to the first heater in the combustor to produce a false yarn.

0.06 ≤ ... ... ... ... ... (One)

0.10? B? 0.13 ... ... ... ... ... ... (2)

0.03? C? 0.05 ... ... ... ... ... ... (3)

0.30? D? 0.40 ... ... ... ... ... ... (4)

Where A is the slit width in mm, B is the slit longitudinal length in mm, C is the 90 degree angle from the center to the slit in mm and D is the depth of penetration in mm ].

According to another aspect of the present invention, the production rate of the false-twist yarn is 500 to 800 mpm.

According to another embodiment of the present invention, the temperature of the first heater is maintained at 170 to 200 ° C.

The false-twist yarn of the present invention having excellent bulkiness and gloss as described above and the method for producing the same can be obtained by using a triangular cross-section yarn to give an elegant luster to the filament yarn, The present invention has been accomplished without the complexity of the process or the modification of the raw material, and the problem of the unit price increase has not been caused. Further, it is possible to provide a false-twist yarn for a velvet fabric in which soft characteristics are further improved due to twisting and bulging, thereby solving the above-mentioned conventional problems.

1 is a cross-sectional photograph of a yarn for a velvet fabric having a triangular cross section according to a preferred embodiment of the present invention,
2 is a sectional view of a spinneret used in the production of a yarn for a velvet fabric according to a preferred embodiment of the present invention,
Fig. 3 is a schematic view showing a process of producing a yarn of a triangular cross section as a twist yarn using a combustor according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in more detail by way of preferred embodiments with reference to the accompanying drawings. It is needless to say that the present invention is not limited to the following embodiments, but may be modified in various ways within the scope of the gist of the present invention.

Fig. 1 is a cross-sectional photograph of a yarn for a velcro fabric of a triangular cross section according to a preferred embodiment of the present invention, Fig. 2 is a sectional view of a spinneret used in the production of a yarn for a velvet fabric according to a preferred embodiment of the present invention, 3 is a process schematic view schematically showing a process of producing a triangular cross-section yarn as a twist yarn using a combustor according to a preferred embodiment of the present invention.

A method for manufacturing a false-twist yarn for a velvet fabric according to the present invention is for producing a yarn having a triangular cross-section as shown in FIG. 1. For this purpose, (4), the polymer is solidified by cooling air in a range that the single yarn fineness is not more than 1.0 denier and the number of the strands is not more than 100, and the solidified yarn is solidified by the cooling surface Treating it with an oil-repellent agent, and stretching at a stretching temperature of 80 to 100 DEG C through one or more godet rollers, heat-treating it, and winding it in a winding machine:

0.06 ≤ ... ... ... ... ... (One)

0.10? B? 0.13 ... ... ... ... ... ... (2)

0.03? C? 0.05 ... ... ... ... ... ... (3)

0.30? D? 0.40 ... ... ... ... ... ... (4)

Where A is the slit width in mm, B is the slit longitudinal length in mm, C is the 90 degree angle from the center to the slit in mm and D is the depth of penetration in mm ].

According to a preferred embodiment of the present invention, when the A value is lower than 0.06 and the B value is lower than 0.10, the back pressure and the shearing speed are increased, the draft is lowered, can do. On the contrary, when the value of A is higher than 0.09 and the value of B is higher than 0.13, the back side shear rate is lowered and the draft is increased, which may also cause poor spinning workability. If the C value is lower than 0.03 or higher than 0.05, the improvement in gloss and file deterioration becomes poor, which is deviated from the object to be achieved from the beginning. Further, if the D value is lower than 0.30 or higher than 0.40, the pressure in the cage is not suitable, which is also undesirable because the radiation workability is lowered.

Since the single yarn fineness of the present invention is less than 1.0 denier, the yarn is superior in glossiness when woven with velvet due to the morphological characteristic of the cross section, The width of the discharge hole can be appropriately adjusted within the above range.

Further, according to another preferred embodiment of the present invention, the yarn produced as described above is supplied to the first heater 3 located in the combustor 10 shown in Fig. 3 through the first feeder roller 2 After passing through the heater, the oil is supplied to the first feeder 4, the second feeder 5, the second heater 6, the third feeder roller 7, the oil roller 8 and the winder 9 sequentially And twisted while moving, to produce a false-twist yarn and provide it for a velvet fabric.

The elongation of the drawn yarn in the triangular cross section of the present invention is preferably 20 to 50%. If the elongation is lowered to 20% or less, the winding property after the twisting is lowered, which is undesirable. When the elongation is 50% or more, the spinning workability is lowered and the dyeing is uneven.

In the present invention, it is preferable that the drawn yarn is twisted at a stretching ratio of 1.0 to 1.5, and the speed at which the false twist yarn is produced by feeding it to the first heater in the twisted yarn is 500 to 800 mpm. If the production speed is less than 500 mpm, the productivity is lowered. If the production speed is higher than 800 mpm, the productivity is lowered.

According to another preferred embodiment of the present invention, the temperature of the first heater 3 is preferably maintained at 170 to 200 ° C. When the temperature is lower than the above range, the winding property is deteriorated to cause deterioration of the touch feeling. If the temperature exceeds the above range, the strength and elongation decrease, which is not preferable.

Hereinafter, the present invention will be described in more detail with reference to the preferred embodiments. However, it is to be understood that the present invention is not limited by these embodiments, It will be obvious to those of ordinary skill in the art.

Example 1

A polyester having a titanium dioxide content of 0.3 wt% and an intrinsic viscosity (?) Of 0.652 was irradiated at a spinning temperature of 285 DEG C, and the cermet had a triangular cross-section composed of a length of A = 0.075, B = 0.115, C = The polymer was discharged and cooled to obtain 150 denier / 96 filaments of triangular section at a production rate of 5300 mpm to produce a partially drawn yarn having a strength of 4.5 g / de and elongation of 35%. The thus-produced yarn was used to produce a velvet fabric, and the gloss, bulging property, tactile feeling and paw withdrawal of the fabric were examined. The results are shown in Table 1 below. Here, the judgment result is indicated as [?: Very good?: Good,?: Normal, X: poor].

Example 2

The partially stretched yarn produced in Example 1 was fed to the first feeder roller using a belt-type twin-screw extruder as shown in FIG. 3 to produce a false-twist yarn at a production rate of 600 mpm, a temperature of the first heater at 180 ° C., and a stretching ratio of 1.1 . The velvet fabric was produced using the false-twist yarn thus produced, and then the gloss, bulging property, tactile feeling and paw withdrawal of the fabric were examined, and the results are shown in Table 1 below. Here, the judgment result is indicated as [?: Very good?: Good,?: Normal, X: poor].

Comparative Example 1

A yarn was produced in the same manner as in Example 1, except that the cross section was flattened.

Comparative Example 2

A yarn was produced in the same manner as in Example 1 except that the section was circular.

division Polish Bulkite touch File Exit Example 1 ◎ ○ ○ ○ Example 2 ◎ ◎ ◎ ◎ Comparative Example 1 ◎ X X X Comparative Example 2 X ○ ○ X

It is to be understood that the present invention is not limited to the above embodiments and various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention.

1 --- triangular cross-section thread 2 --- first feeder roller
3 --- first heater 4 --- misfire mechanism
5 --- 2nd feeder roller 6 --- 2nd heater
7 --- 3rd feeder roller 8 --- Oil roller
9 --- Winder 10 --- combustor

Claims (6)

A method for producing a yarn for a velvet fabric by discharging a polyester polymer having an intrinsic viscosity [?] Of 0.640 to 0.670 as a whole using a spinneret having a triangular cross section,
The spinneret having the triangular cross-section satisfies all of the following formulas (1) to (4), wherein the discharged yarn is solidified by cooling wind, the solidified yarn is treated with a spreading agent below the spinneret surface, Wherein the stretch yarn is stretched to a level of 20 to 50% at a stretching temperature of 80 to 100 DEG C through the above godet roller, and the stretched yarn is heat treated and wound up so that the single yarn fineness does not exceed 1.0 denier. : ≪
0.06 ≤ ... ... ... ... ... (One)
0.10? B? 0.13 ... ... ... ... ... ... (2)
0.03? C? 0.05 ... ... ... ... ... ... (3)
0.30? D? 0.40 ... ... ... ... ... ... (4)
Where A is the slit width in mm, B is the slit longitudinal length in mm, C is the 90 degree angle from the center to the slit in mm and D is the depth of penetration in mm ].
delete delete A method for producing a false-twist yarn for a velvet fabric by discharging a polyester polymer having an intrinsic viscosity [?] Of 0.640 to 0.670 as a whole using a spinneret having a triangular cross section,
The spinneret having the triangular cross-section satisfies all of the following formulas (1) to (4), wherein the discharged yarn is solidified by cooling wind, the solidified yarn is treated with a spreading agent below the spinneret surface, The elongation is conducted at a drawing temperature of 80 to 100 ° C through the above godet roller at a level of 20 to 50%, followed by heat treatment and winding to produce a partially drawn yarn so that the single yarn fineness does not exceed 1.0 denier, Wherein the first heater is provided in the first heater to produce a false yarn.
0.06 ≤ ... ... ... ... ... (One)
0.10? B? 0.13 ... ... ... ... ... ... (2)
0.03? C? 0.05 ... ... ... ... ... ... (3)
0.30? D? 0.40 ... ... ... ... ... ... (4)
Where A is the slit width in mm, B is the slit longitudinal length in mm, C is the 90 degree angle from the center to the slit in mm and D is the depth of penetration in mm ].
The method of manufacturing a false-twist yarn for a velvety fabric according to claim 4, wherein the production rate of the false-twist yarn is 500 to 800 mpm.
The method of claim 4, wherein the temperature of the first heater is maintained at 170 to 200 ° C.

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