KR20190044795A - High Function Polyester Complex Hollow Fiber And Warmth Filler Using That - Google Patents

Abstract

The present invention relates to a high functional polyester-based hollow composite fiber to maintain insulation and antibacterial functions even after repeated washing, and insulating filler using the same. According to the present invention, the polyester-based hollow composite fiber is polyester-based short fiber in which polyethylene terephthalate, polytrimethylene terephthalate polymer, or polybutylene terephthalate polymer is formed in a side by side type. 5 to 10 parts by weight of a master batch is added to the polyethylene terephthalate polymer, wherein the masterbatch comprises a spinning solution and a resin in which a mixed particle of a carbon particle and an inorganic particle is processed by a metal alkoxide coupling agent, and the spinning solution includes 1.0 to 6.0 wt% of a carbon particle, 0.5 to 3.0 wt% of an inorganic particle consisting of metal powder, ceramic powder, or mixed powder thereof, and 0.2 to 2.0 wt% of at least one metal alkoxide coupling agent selected from a group consisting of titanium salt, aluminate salt, and silicate salt. A cross section of the side by side type hollow composite fiber is an annular shape and a circular hollow part is formed at the center of a cross section by 5 to 30% with respect to a total area.

Description

TECHNICAL FIELD [0001] The present invention relates to a high-performance polyester-based hollow composite yarn and a heat-

The present invention relates to a high-performance polyester-based hollow composite yarn and a warming filler using the same, and more particularly to a high-performance polyester-based hollow composite yarn having an antibacterial and heat- Lt; / RTI >

As outdoor clothing becomes popular, when outdoor winds are blowing, everyone can take out the goose down or duck down jumper to maintain the body temperature. Outdoor products are already in the deep part of our life. , Consumers have begun to demand outdoor products that are more suitable for everyday life than high-priced, warm-keeping high-end products for extreme environments.

As a result of these trends, winter outdoor products are being developed for outdoor products that are thin, lightweight, lightweight, windproof, breathable and highly functional outdoor products, and their popularity is increasing day by day.

Unlike outdoor or casual wear, which has a recent characteristic that use of artificial fillers will increase, men's wear with coat-style down products is wool on the outer and duck or goose, Artificial fillers are preferred because they are easy to come out, and they are much more expensive than natural fillers with cost hikes. However, a substitute material that can satisfy the warmth and lightweight effect of a feather used as a filler for endothelium is not sufficiently developed.

Most of the cold weather products currently on the market are heat insulation by the air layer, which causes the activity to be lowered as a reason to increase the thickness of the fabric constituting the covering, and the feathers (feather, Is deteriorated due to agglomeration and exudation during washing and it is not good for cosmetics. In addition, the form of pulling feathers from ducks and goosebumps is causing discomfort in animal protection groups. Due to the nature of natural materials, there is a concern that odor is generated, and there are many inconveniences in terms of management such as washing.

Accordingly, in order to satisfy consumer needs of various classes, it is required to develop a general-purpose outdoor product having superior functionality and cost competitiveness, and domestic materials for it.

Korean Patent No. 1183949 discloses a padding for warming which is formed by laminating synthetic fibers and mammalian hairs together. The padding made a multi-layered insulating material made by laminating a synthetic fiber layer, a layer of a mixture of a mammalian hair and a synthetic fiber, and made a formally stable insulating material having a proper thickness without aggregation or fiber exudation. However, The process is troublesome because a separate facility for supplying mammal hair is added, and the merit of the mammal hair is mixed with the synthetic fiber to reduce the merit of the moth, and the price competitiveness is lower than that of a general synthetic thermal insulator.

In addition, Korean Patent No. 1414206 discloses a C-type hollow fiber which has an improved hollow ratio to maximize the effects such as heat insulation and light weight, but it is inconvenient to carry out a post- (IV), and there is no curl property.

In addition, general synthetic fillers are produced in a uniform form by laminating short fibers, and when they are used in clothes such as padding, clustering may occur, and the recoverability is deteriorated when they are used for a long time.

Disclosure of the Invention The present invention has been made to solve the above problems, and it is an object of the present invention to provide a polyester-based hollow composite yarn which can be used in an eco-friendly ball form to supplement and replace disadvantages of feather And to provide a warming filler using the same.

It is another object of the present invention to provide a hollow composite yarn which can contain an air layer so as to have excellent warmth.

Another object of the present invention is to provide a side-by-side bicomponent composite yarn having a different intrinsic viscosity (IV) so that the hollow composite yarn can be easily wound into a ball shape, and a heat insulating filler using the same.

In addition, the present invention provides a fiber-reinforced fabric comprising carbon particles and inorganic particles contained in a fiber, the fabric being made of the fiber is excellent in washing fastness, .

In order to achieve the above object, the present invention provides a polyester staple fiber comprising a polytrimethylene terephthalate polymer or a polybutylene terephthalate polymer in a polyethylene terephthalate polymer, Side side type, wherein the polyethylene terephthalate polymer contains 1.0 to 6.0% by weight of carbon particles; 0.5 to 3.0% by weight of an inorganic particle composed of a metal powder, a ceramic powder or a mixed powder of a metal powder and a ceramic powder; And 0.2 to 2.0% by weight of at least one metal alkoxide coupling agent selected from the group consisting of a titanate, an aluminate and a silicate is treated with a metal alkoxide coupling agent to a mixed particle of carbon particles and inorganic particles 5 to 10 parts by weight of a master batch mixed with a resin is added, and the cross-section of the side by side type hollow composite yarn is annular in shape, and at the center of the cross section, 5 to 30% And a hollow portion of the polyester-based hollow composite yarn.

The polyethylene terephthalate polymer has an intrinsic viscosity of 0.45 to 0.65 dl / g, a polytrimethylene terephthalate polymer has an intrinsic viscosity of 0.9 to 1.1 dl / g, and a polybutylene And polyester terephthalate has an intrinsic viscosity of 0.8 to 1.2 dl / g.

The present invention is also characterized in that the weight ratio of polytrimethylene terephthalate polymer or polybutylene terephthalate polymer to the polyethylene terephthalate polymer is 4 to 6 to 6 to 4, Thereby providing a polyester-based hollow composite yarn.

The present invention also provides a polyester-based hollow composite yarn characterized in that the polyester-based staple fiber has a stretching ratio of 2.1 to 3.5.

The present invention also provides a polyester-based hollow composite yarn characterized in that the polyester-based staple fiber has a single fiber fineness of 2 to 5 denier and a fiber length of 15 to 70 mm.

The present invention also provides a warming filler using a polyester-based hollow composite yarn in the form of a ball.

The heat-insulating filler having a ball shape using the polyester-based hollow composite sintered fiber according to the present invention has a high filling ratio and high fill power due to the hollow ratio and the crimp phenomenon by using the two-component hollow composite yarn, The carbon particles and the inorganic particles contained in the hollow composite yarn fibers impart heat retention and antimicrobial functions to the fibers and the fabrics made of the fibers have excellent washing fastness so that the yarn can be kept warm and antibacterial The effect is excellent.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a fiber of a warm-keeping filler having a conventional ball shape and a side-by-side form of a bicomponent composite hollow fiber of Comparative Example 3. FIG.
Fig. 2 is a cross-sectional view of a fiber of a warm-keeping filler having a conventional ball shape. Fig. 2 is a cross-sectional side view of a bicomponent composite yarn cross-section through two circular nozzles combined in Comparative Example 4. Fig.
FIG. 3 is a conceptual diagram of a side-by-side type bicomponent composite hollow fiber cross section of a polyester-based hollow composite yarn according to the present invention.
4 is a cross-sectional view of a side-by-side type bicomponent hollow composite yarn of Example 3 as a polyester-based hollow composite yarn according to the present invention.
FIG. 5 is a cross-sectional view of a spinneret for extruding a side-by-side bicomponent hollow fiber composite yarn through a melt spinning process, in a polyester-based hollow composite yarn according to the present invention.
6 is a cross-sectional view of a spinneret for extruding a side-by-side type bicomponent hollow composite yarn of Comparative Example 4 through a melt spinning process
7 is a view showing a ball shape of a warmth filler according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that, in the drawings, the same components or parts are denoted by the same reference numerals whenever possible. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as to avoid obscuring the subject matter of the present invention.

As used herein, the terms " about, " " substantially, " " etc. ", when used to refer to a manufacturing or material tolerance inherent in the stated sense, Accurate or absolute numbers are used to help prevent unauthorized exploitation by unauthorized intruders of the referenced disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-section of a fiber of a warm-keeping filler having a conventional ball shape and a cross-section of a side-by-side type bicomponent hollow composite yarn having a hollow ratio of 5%

Generally, when the enclosure ratio is high, the warmth is excellent. Insulating filler has better heat retention when it contains fibers with low thermal conductivity, and air has the lowest thermal conductivity and has excellent thermal insulation. In addition, the larger the hollow space in the fiber, the more excellent the light weight in addition to the warming property, and the wearer's feeling as a filling material of the garment can be improved.

Fig. 2 is a cross-sectional view of a fiber of a conventional warm-keeping filler with a side-by-side two-component composite yarn cross-section through two coupled circular saws. Refers to a yarn having a Bi-Component structure in which two kinds of polymers having different heat shrinkage components are discharged through a nip and bonded in a side-by-side shape. It has a snowman shape with two circular sections connected to each other. Each circular component is mainly composed of polyethylene terephthalate polymer and polytrimethylene terephthalate polymer. However, since there is no space in the fiber cross section for containing air, there is a problem in heat insulation, elasticity, lightweight, and the like.

FIGS. 3 and 4 are schematic views and cross-sectional views of a side-by-side type bicomponent hollow fiber composite fiber according to the present invention.

The present invention relates to a polyester terephthalate polymer composition comprising a polyester terephthalate polymer (110), a polyester terephthalate polymer (110), a polytrimethylene terephthalate polymer or a polybutylene terephthalate Wherein the polybutylene terephthalate polymer 120 is a side by side type hollow fiber hollow composite yarn 100 having hollow spaces 130 at the center thereof.

The polyethylene terephthalate polymer may further contain 1.0 to 6.0 wt% of carbon particles; 0.5 to 3.0% by weight of an inorganic particle composed of a metal powder, a ceramic powder or a mixed powder of a metal powder and a ceramic powder; And 0.2 to 2.0% by weight of at least one metal alkoxide coupling agent selected from the group consisting of a titanate, an aluminate and a silicate is treated with a metal alkoxide coupling agent to a mixed particle of carbon particles and inorganic particles 5 to 10 parts by weight of a master batch mixed with a resin is added so that the carbon particles and the inorganic particles contained in the fibers impart heat insulation and antimicrobial functions to the fibers and the fabrics made of the fibers are excellent in washing fastness, And there is no deterioration of heat preservation and antibacterial function even if it is applied.

The bicomponent hollow bicomponent yarn 100 is characterized in that it has wavy or spiral wrinkles.

Polytrimethylene terephthalate (120), which is one component of the bicomponent hollow bicomponent yarn (100), is abbreviated as PTT and is a kind of polyester yarn, which is a kind of polyester yarn, It is made better and refers to the skin-friendly yarn. It is a yarn applicable to potential crimp yarns, and has elastic characteristics such as nylon touch and spandex, and is excellent in breathability.

Another component, polyethylene terephthalate (PET) 110, is abbreviated as PET, which is mainly used as synthetic fibers. In general, PET, which is a thermoplastic polymer, is extruded through a spinneret at a temperature higher than the melting point, cooled and solidified, It is used after melt spinning process.

Polybutylene terephthalate (PBT) is an abbreviation of PBT, and it is stretchable to 1.5 times the length, and it returns to its original length. . It does not lose elasticity even when wet, has soft feel and elasticity.

The cross-sectional shape of the hollow composite yarns arranged in the side by side type is an annular shape. The cross-sectional shape of the hollow composite yarn is a ball-shaped heat insulating filler having a circular hollow portion with an area of 5 to 30% .

1 and FIG. 2 showing a fiber cross-section as a conventional filler, the fiber cross-section of the present invention has a circular hollow space 130 at the center thereof as shown in FIG.

5 is a cross-sectional view of a spinneret for extruding a side-by-side bicomponent hollow composite yarn through a melt spinning process with a warming filler fiber according to the present invention.

Further, the above-mentioned two components are extruded through a spinneret at a temperature higher than the melting point to cool and solidify. At this time, the spinneret has an annular shape as shown in Fig. 5, but has a characteristic in which the spinneret is divided at regular intervals between the first spinneret and the second spinneret.

On the other hand, Fig. 6 is a cross-sectional view of the spinneret of the hollow side-by-side type bicomponent fiber yarn without hollow.

Molten polyethylene terephthalate polymer is disposed on the upper ends 141 and 151 of each of the first spinneret 140 and the second spinneret 150 and poly The polytrimethylene terephthalate polymer may be eluted. In this process, the volume expands immediately after being extruded at a high pressure, and the distance between the two becomes narrower, resulting in an annular shape that is finally connected.

At this time, in order to obtain a connected annular shape with a narrow spacing, the same polymer should be used at the connection portion. If the separate polymer is eluted by spinneret, interfacial separation between the two polymers may occur, making it difficult to connect the annular shape.

After that, after cooling and solidification process, it becomes undeveloped company. The undrawn yarn thus melt-spun can be made into an end yarn through a stretching process in which the culture and crystallization are expressed in the fiber structure to give the strength to be the final fiber.

The desired fiber and hollow ratio can be obtained according to the size and thickness of the spinneret. On the other hand, when the annular shaped spinneret which is not separated from the beginning is used, the inner radius of the composite yarn is reduced in the process of expanding the volume inside and outside immediately after the high pressure extrusion, so that it may be difficult to have a desired hollow ratio.

7 is a view showing a ball shape of the warming filler according to an embodiment of the present invention. In the bicomponent hollow composite yarn obtained through the spinneret, there is a difference in degree of shrinkage after cooling and solidifying after extrusion due to the difference in intrinsic viscosity of each polymer.

Therefore, a crimp occurs in which the fibers are rounded in accordance with the difference in shrinkage ratio. As the intrinsic viscosity difference becomes larger, the crimp ratio becomes larger and the ball shape can be made small.

Therefore, it is preferable to use a polymer of two components in order to have a large difference in intrinsic viscosity. This is because the polymer of the same component may have a limited range of intrinsic viscosity.

The present invention relates to a polyethylene terephthalate polymer having an intrinsic viscosity of 0.45 to 0.65 dl / g, an intrinsic viscosity of a polytrimethylene terephthalate polymer of 0.9 to 1.1 dl / g, a polybutylene terephthalate (Polybutylene terephthalate) has an intrinsic viscosity of 0.8 to 1.2 dl / g.

Also, the weight ratio of polytrimethylene terephthalate polymer or polybutylene terephthalate polymer to polyethylene terephthalate polymer is preferably 4: 6 to 6: 4.

The polyester-based staple fiber of the warm-up filler having a ball shape according to the present invention has a draw ratio of 2.1 to 3.5. Stretching refers to stretching of molecules while passing through a roller with a high number of revolutions in a slow feed feed roller.

 Polymeric materials are generally solid, but their mechanical properties are highly dependent on the orientation of the polymer chain. When a polymer in a non-oriented state is stretched in a certain direction at a temperature higher than the second transition temperature, the polymer chains are oriented in the tensile direction thereof and their mechanical properties change. This operation is referred to as elongation, and the synthetic fiber filament spun is easily stretched even by a very small force, and the elongation does not return even if the tension is removed. It is because the polymers are amorphous. Thus, it is not practical as a fiber alone, but if it is stretched above the second transition temperature, the molecules are oriented in the direction of the fiber axis and become extremely elastic fibers.

In addition, the polyester-based staple fiber preferably has a single fiber fineness of 2 to 5 denier, a fiber length of 15 to 70 mm, and a ball-shaped heat-resistant filler using the staple fiber preferably has a fill power of 250 or more.

Generally, the fill factor and filling power differ depending on the fineness of the staple fibers used in the filler. When the filaments constituting the filler are three or more filaments, the heat resistance may be improved due to the high encapsulation efficiency. However, the filament fibers of the three filaments may be weak in elasticity and the fill power may be deteriorated. It is possible to increase the fill power because of the excellent elastic force, but the permeability can be lowered.

Therefore, the heat-insulating filler having the ball shape of the present invention can satisfy the concave and fill powers simultaneously by using short fibers having a fineness of 2 to 5 denier.

If the fiber length of the polyester staple fiber is too short or long, it may be difficult to form as a ball type filler, or the shape stability may be deteriorated. Therefore, the fiber length of the staple fiber is preferably 15 to 70 mm.

In addition, the heat-resistant filler of the present invention is preferably formed in a ball shape so as to have a high filling ratio, excellent elastic recovery property, and a fill power of 250 or more.

Fill power or Filling power is a numerical value indicating how much the down weight (down volume) occupies the down weight. It is one of the value measures of down quality. The larger the fill power, the more amount of air can be filled with the same amount of down, which means that there is a greater amount of air pockets, which results in higher insulation and thermal insulation. Therefore, the higher the fill power is, the better the thermal insulation is.

Hereinafter, embodiments of a method for producing a warm-feeling filler having a ball shape according to the present invention will be described, but the present invention is not limited thereto.

Example 1

The intrinsic viscosity (IV) of the polyethylene terephthalate polymer (IV) 0.45 and the polytrimethylene terephthalate polymer (1.07) had an intrinsic viscosity (IV) of 1.02. The weight ratio of the polymer is 1: 1, and 5 parts by weight of the master batch is mixed with the polyethylene terephthalate polymer to obtain a conjugate fiber having a fineness of 3 denier after stretching at a stretching ratio of 2.2 after the combined spinning. To obtain short fibers of 24 mm fiber length. Thereafter, a ball-like warming filler is obtained by using short fibers.

Example 2

The conditions are the same as those in Example 1, but have a polyethylene terephthalate polymer intrinsic viscosity (IV) of 0.55.

Example 3

The conditions are the same as those of Example 1, except that the polyethylene terephthalate polymer has an intrinsic viscosity (IV) of 0.65.

Example 4

The conditions are the same as those in Example 1, except that the polyethylene terephthalate polymer has an intrinsic viscosity (IV) of 0.65 and polybutylene terephthalate is used instead of polytrimethylene terephthalate .

Comparative Example 1

The conditions are the same as those of Example 1, except that the binary polymer is polyethylene terephthalate, which has the same component (IV) as the same component, 0.65.

Comparative Example 2

The conditions are the same as those of Example 1, except that the same component (polyethylene terephthalate) has the intrinsic viscosity (IV) of 0.65 and 0.55, respectively.

Comparative Example 3

The same conditions as those in Example 1 were used except that the same component (polyethylene terephthalate) had the intrinsic viscosity (IV) of 0.65 and 0.50, respectively, and the master batch was not added.

Comparative Example 4

The conditions are the same as those of Example 2, except that the spinning and detaching section is not an annular shape as shown in FIG. 5 but has two circular shapes adjacent to each other as shown in FIG.

◎ Evaluation method of antibacterial test

The antimicrobial activity of the filler was measured by the test method of KS K 0693: 2011, and the number of the initial strains of 2.5 × 10 4 was measured 18 hours after the initial strain (ATCC 6538) Lt; RTI ID = 0.0 > control. ≪ / RTI >

◎ How to measure warmth

The filler was irradiated with light of incandescent lamp for 15 minutes, and the light irradiation was stopped. After 1 hour, the temperature of the specimen was measured with time.

Temperature change rate (%) = (Substrate temperature immediately after irradiation - Substrate temperature after 1 hour) / Substrate temperature

◎ Evaluation method of hollow rate

The ratio of void space to cross-section of melt-spun fiber.

◎ Ball size evaluation method

The melt-spun fiber measures the length of the diameter of the rounded ball shape.

◎ feather touch feeling evaluation method

As a kind of emotional evaluation, 10 experimenters evaluated the degree of tactile sensation in the blind state and divided into 1 to 5 grades, indicating that the higher the grade, the better the tactile sensation.

 ◎ Fill power evaluation experiment

 When a sample of 1 ounce (28.4 g) is put into a cylinder of 241 mm in diameter and compressed for 1 day at a weight of 3 ounces and the compression is removed, the recovered volume is measured. For example, when the recovered volume is 300 in 3 / oz Fill power 300, and calculate the average value of five evaluation tests per sample.

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Example 3 Example 4 Polymer 1 PET IV 0.65 PET IV 0.65 PET IV 0.65 PET IV 0.55 PET IV 0.45 PET IV 0.55 PET IV 0.65 PET IV 0.65 Polymer 2 PET IV 0.65 PET IV 0.55 PET IV 0.50 PTT IV
1.02 PTT IV
1.02 PTT IV
1.02 PTT IV
1.02 PBT IV
1.1 Antibacterial result
(Strain reduction rate) 99% 98% 50% 59% 99% 98% 98% 99% Temperature Reduction Rate (%) 8% 8% 15% 20% 8% 7% 8% 6% Hollowness (%) 14 8 5 none 12 15 19 18 Ball size
(Diameter mm) Malformed 5.3 5.3 3.5 3.5 4 5 5 feather touch 4 5 3 3.5 3 4 5 5 fill power 262 320 330 275 294 326 375 370 fiber specification Hollow section 3 denier, fiber length 24mm

 PET: Polyethylene terephthalate

 PTT: polytrimethylene terephthalate (PTT)

 PBT: Polybutylene Terephthalate (PBT)

As shown in Table 1, Examples 1 to 4 consisted of PTT or PBT binary components in PET and showed intrinsic viscosity (IV) difference of 0.57 to 0.37. The greater the difference in viscosity, the greater the degree of shrinkage after melt spinning and the greater the coiling property.

The larger the difference in viscosity, the smaller the hollowness of the hollow composite yarn due to the asymmetric expansion in the expansion step after the melt spinning. Therefore, it can be seen that the hollow ratio has the largest value of 19% in Example 3 in which the difference in intrinsic viscosity (IV) is the smallest. On the other hand, Example 1 has the largest viscosity difference of 0.57, and the ball size is 3.5 mm, which is smaller than Examples 2, 3, and 4.

On the contrary, Comparative Example 1 had the same intrinsic viscosity (IV) of the same component, so that the crimp ratio was poor and the ball shape was poor. In Comparative Examples 2 and 3, the difference in viscosity was only about 0.1 to 0.15, Although relatively large, the hollow ratio is relatively small, ranging from 5 to 8%. Fig. 1 shows a cross section of a composite hollow fiber having a hollow ratio of 5% of Comparative Example 3. Fig. The comparative example 4 is characterized in that there is no hollow ratio because there is a difference in the spinneret.

The feather touch is proportional to the size of the ball size as shown in Table 1.

As a filler, the higher the fill power value, the better the thermal insulation is. As shown in Table 1, the fill power value is related to the porosity and the ball size, and it is known that the higher the two values, the better the thermal insulation. It can be seen that the embodiment 3 in which the hollow ratio and the ball size are large has the highest fill power value.

It can be seen that the example in which the masterbatch is added has a difference in antibacterial effect and temperature reduction rate as compared with Comparative Examples 3 and 4, which are not.

 ◎ Evaluation of fill power by difference of stretching ratio

The stretching ratio refers to the ratio of the number of turns of the rear end roller to the number of revolutions of the feed roller with a slow rotation speed.

Example 5

The conditions are the same as those in Example 3, except that the stretching ratio is 2.4.

Example 6

The conditions are the same as those of Example 3, but the stretching ratio is 2.6.

Comparative Example 5

The conditions are the same as those in Example 3, except that the stretching ratio is 2.0.

division Example 3 Example 5 Example 6 Comparative Example 5 Stretching cost 2.2 2.4 2.6 2.0 feather touch 5 3 One 5 Ball size (mm) 5 4 3 Malformed fill power 375 330 290 305

The molecules stretched by the difference in stretching ratio are oriented in the direction of the fiber axis and become fibers having excellent elasticity. In Table 2, it can be seen that as the stretching ratio increases, the elastic ratio of the fibers increases, and as the crimp ratio increases, the ball size becomes smaller and the fill power decreases. In Comparative Example 4, the stretching ratio was 2.0, indicating that the elasticity of the fiber was small and the ball shape was poor. Thus, it can be seen that the embodiment 3 having the stretching ratio of 2.2 has the largest fill power value.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be clear to those who have knowledge of.

100: Binary hollow composite yarn
110: polyethylene terephthalate polymer
120: polytrimethylene terephthalate polymer
130: hollow (empty space)
140, 140: first spinneret 141: first spinneret top
143: first spinneret bottom 150, 150: second spinneret
151: second spinneret top 153: second spinneret bottom

Claims (6)

As the polyester staple fiber, a polytrimethylene terephthalate polymer or a polybutylene terephthalate polymer in a polyethylene terephthalate polymer is composed of a side by side type, ,
1.0 to 6.0% by weight of carbon particles in the polyethylene terephthalate polymer; 0.5 to 3.0% by weight of an inorganic particle composed of a metal powder, a ceramic powder or a mixed powder of a metal powder and a ceramic powder; And 0.2 to 2.0% by weight of at least one metal alkoxide coupling agent selected from the group consisting of a titanate, an aluminate and a silicate is treated with a metal alkoxide coupling agent to a mixed particle of carbon particles and inorganic particles 5 to 10 parts by weight of a master batch mixed with the resin is added,
Wherein the cross-section of the side by side type hollow composite yarn has an annular shape and a circular hollow portion having 5 to 30% of the total area can be formed at the center of the cross-section.
The method according to claim 1,
The polyethylene terephthalate polymer has an intrinsic viscosity of 0.45 to 0.65 dl / g, a polytrimethylene terephthalate polymer has an intrinsic viscosity of 0.9 to 1.1 dl / g, polybutylene terephthalate Terephthalate) having an intrinsic viscosity of 0.8 to 1.2 dl / g.
The method according to claim 1,
Characterized in that the weight ratio of polytrimethylene terephthalate polymer or polybutylene terephthalate polymer to the polyethylene terephthalate polymer is 4 to 6 to 6 to 4, Compound history.
The method according to claim 1,
Wherein the polyester-based staple fibers have a stretching ratio of 2.1 to 3.5.
The method according to claim 1,
Wherein the polyester-based staple fiber has a monofilament fineness of 2 to 5 denier and a fiber length of 15 to 70 mm.
A method according to any one of claims 1 to 8
A warming filler using a polyester-based hollow composite yarn in a ball shape.

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