KR101627234B1

KR101627234B1 - Method for manufacturing dope-dyed fiber with light-weight and and soundabsorption characteristic

Info

Publication number: KR101627234B1
Application number: KR1020150043731A
Authority: KR
Inventors: 서진우
Original assignee: 주식회사 동호
Priority date: 2015-03-28
Filing date: 2015-03-28
Publication date: 2016-06-03

Abstract

The present invention relates to a method for producing a functional yarn with a light weight and a sound-absorbing property so that the weight of a machine or a part can be reduced and noise can be reduced.
A method for producing a decorative article having excellent light weight and sound-absorbing properties according to the present invention comprises: a polyester-based synthetic resin chip having an intrinsic viscosity of 0.6 to 0.9; a color master batch chip of 0.3 wt% to 3.0 wt% Mixing 10 to 30% by weight of a bromine-based flame retardant into a spinneret, heating the spinneret to a temperature of 150 to 250 ° C., melting the same, and passing the melt through a unit nozzle Discharging a linear resin mixture having a plurality of hollows formed therein at a discharge rate of from 25 g / min to 25 g / min; rapidly cooling the discharged resin mixture with cooling air at 10 to 15 DEG C at an air velocity of 8 to 40 m / min; And the cooled resin mixture are heated up stepwise between a plurality of rollers having a temperature of 70 ° C to 180 ° C, followed by stretching and winding at a speed of 2,500 to 6,000 m / min.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of manufacturing a bonded yarn having excellent lightweight and sound-

More particularly, the present invention relates to a method of manufacturing an original yarn which can be used for clothes, interior materials, and industrial materials, and more particularly, to a method of manufacturing a yarn of a functional yarn which can reduce the weight of a machine or a component, And a manufacturing method thereof.

The method of dyeing a fabric is a method of weaving after dyeing and two methods of dyeing after weaving. However, such a dyeing method involves various complicated steps, leading to problems such as an increase in manufacturing cost, a disposal cost of wastewater, and an environmental problem due to wastewater.

In order to solve this problem, Korean Patent Registration No. 10-0652091 (title of invention: black polyurethane raw material), Korean Patent Laid-Open No. 10-2010-0078452 (title of the invention: ) Discloses a method for producing a seamless yarn by mixing a coloring agent or the like when spinning fibers. These techniques are focused on improvement of color stability such as light fastness of fibers.

However, recently, as the use of fibers has increased in application range from industrial products such as clothes or general merchandise to special properties such as light fastness and sound absorption in addition to physical properties such as washing fastness and durability, It is necessary to develop the company.

1. Korean Patent Registration No. 10-0652091 (title of invention: black polyurethane raw material encapsulation, 2007.01.24) 2. KOKAI Publication No. 10-2010-0078452 (title of the invention: polyester encapsulation and method for producing the same, 2010.07.08)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned technical problems, and it is an object of the present invention to provide a method for manufacturing a functional yarn which can be used as an industrial material because lightness and sound-

According to one aspect of the present invention, there is provided a base yarn excellent in light weight and sound absorption characteristics, comprising: a polyester-based synthetic resin chip; 0.3 to 3.0% by weight of a color master batch chip, The flame retardant of 10 to 30% by weight based on the total weight of the flame retardant is injected into the spinneret having a temperature of 150 to 250 ° C. and melted. Thereafter, a void ratio of not less than 17% And the discharged resin mixture is quenched by cooling air at 10 to 15 DEG C at an air velocity of 0.8 to 1.0 m / sec, and is discharged from a plurality of rollers of 70 to 180 DEG C Followed by stepwise heating and drawing, and then winding at a speed of 2,500 to 6,000 m / min.

Further, in the present invention, it is preferable that the unitary nozzle is divided into a plurality of regions evenly inside by the partition walls.

In the present invention, the intrinsic viscosity (IV) of the polyester-based synthetic resin chip is preferably 0.6 to 0.9.

Another aspect of the present invention is to provide a method for producing a decorated yarn, which comprises a polyester-based synthetic resin chip having an intrinsic viscosity of 0.6 to 0.9, a color master batch chip of 0.3 wt% to 3.0 wt% To 30% by weight of a bromine-containing flame retardant, and the mixture is heated to 150 ° C to 250 ° C to melt the melt. The melt is then passed through a unitary nozzle, min, wherein the discharged resin mixture is quenched by cooling air at 10 to 15 占 폚 at an air velocity of 8 to 40 m / min, and cooling the cooled resin The step of raising the temperature of the mixture stepwise between a plurality of rollers of 70 占 폚 to 180 占 폚, stretching, and winding at a speed of 2,500 to 6,000 m / min.

According to the present invention, it is possible to produce a polyester raw yarn which can be stably retained without being broken in the process of spinning, cooling, stretching and winding, and the produced polyester yarn is colored and has a beautiful appearance, The hollow fiber of the present invention is not only superior in light weight and sound absorption but also exhibits a flame retardant function and can be used as an industrial material in various fields.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram for manufacturing a circular furnace according to the present invention; FIG.
2 is a flow chart showing the sequence of the process according to Fig.
3 is a sectional view of a unit nozzle provided in the spinneret of the present invention.
FIG. 4 is a cross-sectional view of the resin mixture discharged through the unit nozzle of FIG. 3;

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a process chart for manufacturing a raw fabric according to the present invention, and FIG. 2 is a process flow chart thereof. Referring to FIGS. 1 and 2, a polyester based synthetic resin chip, a color master batch chip, and a brominated flame retardant are mixed in a spinneret 1 (S110).

The polyester-based synthetic resin chip preferably has an intrinsic viscosity (IV) of 0.6 to 0.9. If the intrinsic viscosity is less than 0.6, the fiber formability is poor and a large number of hollows are not easily formed in the inside, which will be described later. If the intrinsic viscosity is more than 0.9, the melt viscosity increases. As a result of the experiment in the present invention, the most preferred polyester resin is a solid-phase polymerized polyester resin having an intrinsic viscosity of about 0.8. The intrinsic viscosity can be calculated by the well-known Bill Meyer approximation after measuring the flow time of the polyester / solvent solution versus the flow time of the pure solvent through the standard capillary with an automatic viscometer.

The color master batch chip is added for coloring a polyester synthetic resin to be mixed with a colorant such as carbon black and a dispersant. The master batch chip is preferably 0.3% by weight to 3.0% by weight based on the total weight of the polyester synthetic resin chips. When the color master batch chip is less than 0.3% by weight, color development is difficult. When the color master batch chip is more than 3.0% by weight, there is no effect of color development, and carbon works as a foreign substance and radiation workability is lowered.

The brominated flame retardant is added for the flame retardancy of the polyester resin. Examples of the brominated flame retardant added include a polybromostyrene flame retardant, a polydibromostyrene copolymer flame retardant, and a brominated epoxy flame retardant. In the present invention, a polymer type brominated flame retardant may be preferably used, and more preferably a brominated epoxy flame retardant or a brominated phenoxy flame retardant. The brominated flame retardant is preferably 10% by weight to 30% by weight based on the total weight of the flame retardant. When the flame retardant is used in an amount of less than 10% by weight, sufficient flame retardancy can not be obtained and drip may occur during combustion. On the other hand, if it exceeds 30% by weight, uniform mixing with the polyester resin is not achieved, and fiber formation is impossible.

Then, the spinneret is heated and melted, and then a linear resin mixture having a plurality of hollows is discharged through a unit nozzle (S120). The spinning temperature is 150 to 250 ° C, and is discharged through the unit nozzle at a rate of 0.20 to 25 g / min. As shown in FIG. 3, the unit nozzle is divided into a plurality of equal areas inside. 3, a two-part nozzle 10-1, a three-part nozzle 10-2 and a four-part nozzle 10-3 are shown. Through these nozzles, 7-2, and 7-3 in which four voids S1, S2, and S3 are formed. Accordingly, since the polyester base yarn produced according to the present invention has a large number of voids, it can be formed to have a large hollow ratio (17% or more of the cross sectional area), thereby realizing light weight and excellent sound absorption properties.

Subsequently, the discharged resin mixture is quenched by cooling air at 10 to 15 DEG C at an air velocity of 8 to 40 m / min (S130). The discharged resin mixture is cooled in the crystallization zone 2, which requires rapid and uniform cooling due to the large number of voids formed inside the resin mixture. For this purpose, the temperature is lower and the cooling rate is increased compared to the cooling temperature in the manufacturing of the conventional encasement. Specifically, the cooling temperature is adjusted to 10 to 15 ° C by lowering the temperature by about 10 to 15 ° C. Also, the wind speed during cooling is adjusted to about 0.3 to 0.5 m / sec, more preferably 0.8 to 1.0 m / sec. On the other hand, it is preferable that the cooled resin mixture is refueled with an emulsion to improve workability.

Then, the cooled resin mixture is drawn and wound (S140). The cooled resin mixture is conveyed by the conveying roller 3 and fed to a plurality of hot rollers 4 provided in the stretching zone 6 to be stretched. That is, as the feeding progresses from the inlet of the stretching zone 6 toward the discharge port, the temperature is gradually raised by a plurality of hot rollers 4 in the range of 70 to 250 캜, and the stretched resin mixture is stretched Is wound on the winding beam 5 at a speed of 2,500 to 6,000 m / min, which is about 10 to 20% later than the basic. Stage heating at the time of elongation prevents abrupt temperature change due to quenching in the previous step, and a large number of hollows are stably maintained without being broken by winding at a more relaxed speed.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to produce a polyester raw material which can be stably held without breaking the hollow in the process of spinning, cooling, drawing and winding, and is excellent in lightness and sound absorption, It can be used as an industrial material in the field.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

1: Spinning detachment 2:? 존 3: Feed roller
4: hot roller 5: winding beam 6: stretching zone
7: polyester powder 10: unit nozzle

Claims

A method of producing a decorated article excellent in light weight and sound absorption,
A polyester based synthetic resin chip having an intrinsic viscosity of 0.6 to 0.9, a color master batch chip of 0.3 wt% to 3.0 wt% based on the total weight, and a brominated flame retardant of 10 wt% to 30 wt% ;
Discharging a linear resin mixture in which a plurality of hollows are formed at a discharge amount of 0.20 to 25 g / min through a unit nozzle partitioned into a plurality of equal parts in the inside by heating the spinneret by heating to 150 to 250 ° C;
Quenching the discharged resin mixture with cooling air at 10 to 15 DEG C at a wind speed of 8 to 40 m / min; And
A step of raising the temperature of the cooled resin mixture stepwise between a plurality of rollers of 70 ° C to 180 ° C, and winding the resin mixture at a speed of 2,500 to 6,000 m / min. Gt;

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