KR20180036678A - The method for manufacturing palse twisted yarns for a velvet fabric - Google Patents

Abstract

The present invention relates to a false-twist yarn and a manufacturing method thereof. The false-twist yarn can be excellently provided for velvet fabric including short pile (wool) fabric such as corduroy, boa, and moquette by improving tactility of the velvet fabric and solving a pile falling problem, by being manufactured with partially oriented false-twist yarn by using a flat microfiber. The manufacturing method for a false-twist yarn for velvet fabric comprises: a step of manufacturing flat yarn with a single yarn fineness of 1.0 denier or less by using a spinneret for a modified cross-section fiber, which includes a discharge hole having a linear cross section or a linear cross section with one or more projections, and having the width of 0.05-0.15 mm and having that the ratio of the length to the width is five or more; and a step of performing false-twisting by supplying the flat yarn to a first heater inside a false-twisting device and making the flat yarn pass the heater, and drawing at the ratio of 1.5-2.0. Therefore, the false-twist yarn for velvet fabric and the manufacturing method can improve tactility of manufactured velvet fabric and can excellently solve a pile falling problem, by specifically regulating a production spinneret and a single yarn fineness of flat yarn and by manufacturing false-twist yarn for velvet fabric according to specific conditions of this present invention by using the manufactured flat yarn through a false-twist device.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing a twisted yarn for a velvet fabric,

The present invention relates to a method for producing a false-twist yarn for a velvet fabric, and more particularly, to a method for producing a false-twist yarn for a velvet fabric, The present invention relates to a method for producing a false-twist yarn for a velvet fabric which can be provided excellently on a pile fabric.

In general, a velvet fabric is a fabric that is formed by folding a double-layered fabric so as to form a pile (fleecy) on one side of the fabric by cutting the middle portion. Such a velvet fabric is preferred as a garment fabric because of its good surface texture and texture. In general, velvet fabrics are capable of manifesting a rich surface effect by making the texture of the surface not to be exposed and forming a directionality in the pile to give a slight glossiness, and in addition to being able to vary the color, It is widely used for women's and men's clothing and casual wear because it can give various texture.

However, conventionally, a velvet fabric using various yarns such as cotton yarn / cotton yarn, cotton yarn / blend yarn, poly yarn yarn / poly yarn yarn, or acetate yarn or rayon yarn has been known as the branch yarn and filament yarn respectively. However, It is unsuitable for use as a casual wear, and a velvet fabric using a general synthetic filament can compensate for the above disadvantages and can broadly be used for a limited range of applications, but it is not as soft as natural fibers such as cotton, There is a problem that the quality of the product surface and the touch is poor

For example, Korean Patent Laid-Open Publication No. 2006-0123820 discloses a method for producing a cross-section polyester fiber for a velvet fabric having excellent wettability and gloss and a method for producing the cross- The present invention relates to a velvet fabric made by a manufacturing method, and discloses a "cross-sectionally-shaped polyester fiber for a velvet fabric" characterized in that the cross section is formed by a dumbbell-shaped cross-section yarn protruding up and down at a central portion. In addition, Korean Patent Laid-Open Publication No. 2006-0082598 discloses selecting a rayon yarn as a pile yarn for forming a pile portion in a velvet fabric and a manufacturing method thereof.

However, the first method has a problem that the improvement of the velvet feeling is limited only by the deformation of the cross section, and the second method also uses the expensive rayon yarn in order to improve the feel of the velvet, Can not be completely prevented.

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

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a velvet which can improve the feel of a velvet manufactured when used as a yarn in a yarn, To provide a false twist yarn for fabrics.

Another object of the present invention is to provide a method for manufacturing a false-twist yarn for a velvet fabric having the above excellent properties.

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 false-twist yarn for a velvet fabric,

In producing the partially-sectionally-stretched partially drawn sheet, a discharge hole is formed in a straight shape having a cross-section of a negative (-) shape or at least one concavo-convex shape, the width of the discharge hole is 0.05 to 0.15 mm and the length of the discharge hole / 5 or more; using a spinneret to produce a flat sectionally stretched yarn so that the single yarn size does not exceed 1.0 denier; And

And the step of stretching the flat cross-section partially stretched filaments to a first heater positioned in a combustor and twisting the filaments into a combustor while passing through the heater and stretching at a stretching ratio of 1.5 to 2.0.

According to another aspect of the present invention, the elongation of the flat cross-section partially stretched yarn is in the range of 90 to 150%.

According to still another aspect of the present invention, the yarn is supplied to the first heater in the combustor to produce a false-twist yarn at a speed of 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.

According to another embodiment of the present invention, the false-twist property is characterized by an elongation of 25% or more and a strength of 3.5 g / de or more.

According to still another aspect of the present invention, the twisting yarn torque is set to 50 to 100. [

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

In producing a flat yarn, a discharge hole is formed in a straight shape having a cross section of a negative (-) shape or one or more irregularities, the width of the discharge hole is 0.05 to 0.15 mm and the width of the discharge hole / discharge hole is 5 or more Preparing a flat yarn such that the single yarn fineness does not exceed 1.0 denier by using the single use spinneret; And

The flat yarn is supplied to a first heater located in the combustor and is wound around the heater while being twisted with a combustor and stretched at a stretching ratio of 1.5 to 2.0.

The false-twist yarns for the velvet fabric of the present invention and the method for fabricating the twist yarns of the present invention having the above-described structure can be produced by adjusting the production cut-off and single yarn fineness of the flat yarn to a specific degree, So that it is possible to improve the tactile feeling of the manufactured velvet and to improve the file detachment, thereby solving the above-mentioned conventional problems.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic process drawing schematically showing a process for producing flat yarn as a twist yarn using a combustor according to a preferred embodiment of the present invention,
2 is a cross-sectional view of a spinneret showing an example of a cross-section of a preferred spinneret for producing a flat yarn used in the production of a false-twist yarn for a velvet fabric according to the present invention,
FIG. 3 is a cross-sectional photograph of a partially stretched yarn spun using a spinneret used in the production of a false-twist yarn for a velvet fabric according to the present invention,
4 is a cross-sectional photograph of a velvet fabric false construction according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will hereinafter be described in more detail by way of preferred embodiments with reference to the accompanying drawings.

Fig. 1 is a schematic view showing a process for producing a flat cross-sectional stretch yarn as a twist yarn using a combustor according to a preferred embodiment of the present invention, Fig. 2 is a schematic view showing a process for producing a twist yarn for a velvet fabric according to the present invention Sectional view showing an example of a cross-section of a preferred spinneret to produce a flat cross-sectional partially drawn yarn.

According to a preferred embodiment of the present invention, in the production of a flat cross-sectional partially stretched yarn according to a preferred embodiment of the present invention, a discharge hole is formed in a straight shape having a cross section of a negative (-) shape or at least one concavo- The width of the discharge hole is 0.05 to 0.15 mm, the length of the discharge hole is 5 or more, and the width of the discharge hole is 5 or more. A flat yarn is produced so that the single yarn fineness does not exceed 1.0 denier, The feeder mechanism 4, the second feeder roller 5, and the second feeder roller 6 are fed to the first heater 3 located in the combustor 10 shown in FIG. 1 through the first feeder roller 2, The second heater 6, the third feeder roller 7, the oil roller 8 and the winder 9 to produce a false-twist yarn to provide the same for a velvet fabric.

Flat yarns having a single yarn fineness of less than 1.0 denier can exhibit a soft touch feeling over natural fibers when woven with velvet due to the morphological characteristics of the cross section. However, it is preferable to limit the width of the discharge hole to 0.15 mm or less since the radiation workability may be deteriorated due to the lowering of the single yarn fineness. When the width of the discharge hole is 0.05 or less, it is possible to prevent the spinning worker from being spun due to poor machining.

The elongation of the flat cross-section partially stretched yarn is preferably 90 to 150%. If the elongation is lowered to 90% or less, the crimpability after crimping is lowered, which is undesirable. When the elongation is 150% or more, lowering of radiation workability and uneven dyeing are undesirable.

In the present invention, it is preferable that the flat cross-section partially drawn yarn is twisted at a stretching ratio of 1.5 to 2.0, and the speed at which the false twist yarn is produced by supplying the first heater in the twisted machine 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. If the temperature is below the above range, the coilability decreases to cause deterioration of the feel. If the temperature exceeds the above range, the strength and elongation decrease, which is not preferable. The false-twist property is preferably 25% or more in elongation and 3.5 g / de or more in strength. When the elongation is less than 25%, the soft touch feeling is lowered due to the increase of the elastic modulus. If the elongation is less than 3.5 g / de, it may occur in the false twisting and weaving process.

According to a further preferred embodiment of the present invention, the false twisting properties are set so that the torque is set to 50 to 100, and when the value is less than 50, the file is lost.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to these Examples.

Example 1

A 0.75 denier / 144 filament having a flat cross section having a strength of 4.0 g / de was produced at a production speed of 3000 mpm and a partially drawn yarn having an elongation of 120% was prepared and supplied to the first feeder roller using a belt- , The production rate was 600 mpm, the temperature of the first heater was 180 캜, and the stretching ratio was 1.8. The tactile feeling and paw withdrawal of the fabric made from the velvet fabric were investigated.

As shown in Table 1, when a flat yarn of less than 1.0de (denier) was used and the production speed was maintained at 3000mpm and the elongation was set at 120%, the touch (soft touch feeling) was the most excellent.

And then, the flattened microparticulated yarn produced in this manner was subjected to a flammability process as in the above conditions, and the tactile feeling remained unchanged, resulting in almost no file dropout.

Comparative Example 1

A false-twist yarn was produced in the same manner as in Example 1, except that the production rate of the flat microfine yarn was lowered and the elongation of the flat cross-sectional partially stretched yarn was adjusted from 120% to 140%.

As a result of the experiment, it was found that the file missing was almost the same as in Example 1, but an indication that the feel (soft touch feeling) was lowered as the elongation became close to 140% was observed.

Comparative Example 2

A false-twist yarn was produced in the same manner as in Example 1 except that the production rate of the flat microfine yarn was increased to adjust the elongation of the flat cross-sectional partially stretched yarn from 120% to 80%.

As a result of the experiment, it was confirmed that the file missing was almost the same as in Example 1, but the tactile sensation (soft touch feeling) was greatly deteriorated at 80% of the tactile sensation.

Comparative Example 3

The same procedure as in Example 1 was carried out except that a fully drawn yarn of 30% in elongation was used to produce a velvet fabric using non-twisted yarn.

As a result of the experiment, it was confirmed that the soft touch feeling was satisfactory when using the fully drawn soft cloth, but the file missing phenomenon was observed when the soft touch was not caused by the above conditions.

Comparative Example 4

A false-twist yarn was produced in the same manner as in Example 1 except that a circular cross-sectional partially drawn yarn was used in place of the flat cross-sectional partially drawn yarn.

As a result of this experiment, it was confirmed that even when using microfibers, the use of a circular cross section instead of a flat cross section greatly deteriorates the soft touch feeling.

division touch File Exit Example 1 ◎ ◎ Comparative Example 1 × ○ Comparative Example 2 × ○ Comparative Example 3 ○ × Comparative Example 4 × ◎

 (The judgment result is?: Very good,?: Good,?: Normal, X: defective)

In order to satisfy both the tactile sensation and the file dropout phenomenon through the above experiment, it is necessary to use a micro-thread to form a flat cross-sectional shape. However, the fact that the micro- , And the fact that it is necessary to use a partially stretched yarn rather than a fully stretched yarn and that the elongation should be 80 to 140% by controlling the production speed in the flat yarn manufacturing process, and that the upper and lower boundaries have a soft touch It has been confirmed that it is greatly deteriorated.

1 --- flattened 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 (2)

A method for producing a false-twist yarn for a velvet fabric, comprising the steps of: producing a microfiber fabric for a velvet fabric; and twisting the microfiber fabric,
In the microfabricated production process, the four conditions of ① microfiber, ② thickness of microfiber, ③ sectional shape of microfiber, ④ production speed and elongation are organically combined,
The thickness of the microfiber yarn should not exceed 1.0 denier at the same time as the partial stretching, and the microfiber yarn should have a flatness of 80 to 140% by controlling the production rate of the microfiber yarn,
In the microfabrication process, the microfibers produced as described above are twisted at a stretching ratio of? 1.5 to 2.0,? The production speed of the false twist yarns is 500 to 800 mpm, and? The first heater temperature is 170 to 200 占By weight based on the total weight of the yarn.
The method according to claim 1,
Wherein said false-twist property is set to 25% or more in elongation, 3.5 g / d or more in strength, and 50 to 100 in torque.

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