KR20150062884A - Blow molding yarn and textile of blow molding yarn, and method therefor - Google Patents

Abstract

The present invention relates to hollow yarn, a fabric containing the same, and a method of preparing the same, the method comprising the steps of: combining low melting point yarn (10) for forming basic structure and discharge yarn (12) for forming hollows which can be discharged by a discharging solution to obtain twist yarn (14) to be located in a deep portion; and covering outer yarn (16) on the twist yarn (14) in the same direction as the combined direction of the twist yarn (14) to prepare processed yarn (18) in which hollows can be formed, wherein the combined angle (x10) of the low melting point yarn (10) for forming basic structure is formed to be different from the combined angle (y) of the outer yarn (16) and that (x) of the initial low melting point yarn (10) of the twist yarn (12); and after weaving processed yarn (18), post processing is performed, including melting fusion of the low melting point yarn (10) and discharging of the discharge yarn (12) in the processed yarn (18).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hollow fiber yarn,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of functional fabric fabrics, and more particularly, to hollow fiber fabrics having hollows in the core and fabrication methods thereof and improved fabrics including hollow fibers.

Recently, eco-friendly textile products and clothing have become popular due to changes in consumer consciousness, and there is an increasing demand for textile products having a complex function in addition to human-friendly and environmentally friendly textile products.

Among the functional fiber yarns, there are hollow yarns having a hollow. The characteristics of the hollow yarns are as follows.

(1) It is lighter than ordinary fibers of the same thickness. (Lightweight)

(2) Since the air with low thermal conductivity is trapped in the empty space, the warmth is high.

(3) Structure similar to bamboo, strong against bending or twisting. (Form stability)

(4) Since the transmitted light or reflected light is complexly refracted and reflected at the interface between the pores and void spaces of the fiber, it becomes opaque and less polluted. (Antifouling property)

(5) In the case of staple fibers, the absorptivity increases due to the capillary action of the void space. In addition, even if long fibers are used, fine holes are formed in the fiber wall against the void space to improve water absorption. (Absorbency)

(6) In the short fibers, various functional medicines treated in post-processing are present in the hollow interior, and the persistence of the imparted performance is improved. (Durability)

(7) Due to the increase of the apparent thickness, the finish is increased and the length of the fabric is increased. (Economy)

If such a hollow fiber can be used as a fabric for clothing or bedding, it will have a multifunctional characteristic such as lightness, warmth, and antifouling property as well as human-friendly and environment-friendly functions required by domestic and overseas consumers.

At present, in Korea, Hollowong is a leading company in the synthetic fiber industry. However, in the case of a single-spun yarn, it has been recognized that it is difficult to manufacture a single-spun yarn due to the characteristics of the single-spun yarn itself, the method of forming the hollow yarn in the manufacturing process of the single yarn yarn, and the lack of the morphological stability and durability of the yarn. Also, in the case of synthetic fiber hollow fiber yarn, the hollow yarn ratio does not exceed 15% when the yarn thickness is applied to clothes or bedding that are relatively thin compared to the industrial yarn, and even if the hollow yarn ratio exceeds 15%, the hollow yarn distortion But it has many defects in terms of morphology stability and has many difficulties in commercialization.

As an example of embodying a hollow fiber yarn and a fabric material having the hollow fiber yarn that overcome these difficulties and commercialized, there is disclosed the above-mentioned prior patent document 10-1174399 issued by Lee, Gyu-hwan as a patentee of the present application.

This prior art document has an advantage of excellent shape stability and durability so as to prevent the hollow shape of the hollow yarn from being distorted. The prior art document discloses that the direction of twist of the sheath yarn covering the twisted twist yarn is formed opposite to the twist direction of the twist yarn in order to prevent the sheath yarn from sinking.

However, since the twist of the sheath yarn is formed opposite to the twist direction of the twist yarn positioned at the deep portion when covering the sheath yarn, the twist yarn located at the deep portion is somewhat distorted and the length of the twist yarn reduced by the twist is increased while the twist is loosened. This may lead to a delay in the smooth spinning process and may deteriorate the quality of the yarn.

In order to minimize the increase of the length of the twist yarn, there is a method of lowering the degree of twist of the covering yarn. In this case, due to the loose covering twist of the outer yarn yarn, the performance decrease such as the strength of the yarn, ), And so on.

Japanese Patent Application Laid-Open No. 10-1174399 "Hollow fiber yarn, fiber fabric having the hollow fiber yarn,

Accordingly, an object of the present invention is to provide a hollow fiber yarn excellent in shape stability and durability, which is free from distortion of a hollow shape, and which has excellent yarn performance including yarn strength and yarn quality, And a method of manufacturing the same.

According to the present invention, there is provided a method for manufacturing a hollow fiber membrane, comprising the steps of: combining a low melting point yarn for forming a skeleton and a hollow yarn releasing capable of being eluted by an eluting solution to obtain a twist yarn to be positioned at a deep portion; And the hollow of the low melting point yarn for forming a skeleton formed in the deep portion of the processed yarn is formed to be different from that of the outer sheath yarn. The low melting point yarn in the processed yarn Wherein a hollow yarn having an inner hollow can be provided through a post-treatment including fusion and dissolution of an outflow yarn.

In addition, the present invention provides a method for manufacturing a composite yarn, comprising the steps of: preparing a twist yarn for positioning a low melting point yarn for forming a skeleton and an outgoing yarn for hollow formation capable of being eluted by an eluting solution, And an embossed portion of the low melting point yarn for forming a skeleton forming the core of the processed yarn is formed differently from an embossed yarn of the outer sheath yarn, Wherein a hollow mixed yarn having an inner hollow can be provided through post-processing including fusion of the low melting point yarn in the processed yarn and elution of the discharged yarn.

Further, according to the present invention, a low-melting point yarn for forming a skeleton and a yarn for hollow formation capable of being eluted by an eluting solution are jointly twisted to obtain a twist yarn to be positioned at a deep portion, and the twist yarn is covered with an outer yarn, And an embossed yarn of a low melting point yarn for forming a skeleton forming the deep portion of the processed yarn is formed differently from an embossed yarn of an outer sheath yarn, And a heat treatment is applied to the raw support so that a low melting point yarn is fused to each processed yarn of the raw material support to form a skeletal portion and the discharged yarn is eluted with the eluting solution, And a hollow fiber yarn is formed on the surface of the hollow fiber yarn.

In addition, the present invention provides a method for manufacturing a composite yarn, comprising the steps of: preparing a twist yarn for positioning a low melting point yarn for forming a skeleton and an outgoing yarn for hollow formation capable of being eluted by an eluting solution, And an embossed portion of the low melting point yarn for forming a skeleton forming the core of the processed yarn is formed differently from an embossed yarn of the outer sheath yarn, And a raw support section formed by weaving a processed yarn covered with the outer sheath and capable of forming a hollow. The raw support section is heat treated to fuse a low melting point yarn to each processed yarn of the raw support section to form a skeleton section, And a hollow is formed in the deep part of each processed yarn.

The present invention relates to a yarn which is excellent in dimensional stability and durability so as not to be distorted in the hollow shape by forming an envelope covering the same yarn in the same direction as that of the twist yarn constituting the core portion, And the fiber fabric having the hollow yarn can be produced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic manufacturing process for producing a fiber fabric having a hollow yarn or a hollow yarn,
Fig. 2 is a perspective view of a twist yarn obtained by combining the low-melting point yarn and the lean yarn during the manufacturing process of Fig. 1,
Fig. 3 is a perspective view of a processed yarn in which the outer yarn is covered with the same yarn according to the present invention,
FIG. 4 is a perspective view of a live support obtained by weaving using the hollow formable yarns of FIG. 3;
FIG. 5 is a perspective view of a hollow-type yarn fabric obtained by dissolving the raw material support of FIG. 4 after heat treatment,
6 is a perspective view of a hollow yarn according to an embodiment of the present invention.
FIGS. 7 to 9 are enlarged photographs of an electron microscope of a fiber fabric having a hollow yarn obtained according to an embodiment of the present invention. FIG.

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

FIG. 1 is a schematic manufacturing process diagram for producing a fiber fabric having a hollow yarn or a hollow yarn applied to the present invention. In order to prepare a hollow yarn 24 included in the fabric fabric 22, Thereby producing a working yarn 18 capable of forming a hollow as described above.

3, the low-melting point yarn 10 and the low-melting point yarn 20, which are materials used for forming the twist yarn 14 located at the core portion, (12) is used.

As shown in Fig. 1, first, the low-melting point yarn 10 and the lean yarn 12 are jointly twisted (step S2 in Fig. 1) to form twisted yarns (14).

The low melting point yarn 10 constituting the twist yarn 14 is a polyester material and serves as a skeleton of a hollow yarn (24 in FIG. 6) to maintain a hollow shape. The general polyester yarn has a melting point of 250 to 260 ° C, whereas the polyester low melting point yarn has a melting point of 120 to 200 ° C, which is relatively low compared with the melting point of a common polyester yarn. The low melting point yarn 10 is melted at the time of heat treatment and then hardened hardly after hardening. The low melting point yarn 10 is bonded to the surrounding sheath 16 or the dissolution yarn 12 at the time of fusion. The low melting point yarn 10 in the present invention preferably has a thickness of 10 to 300 denier and is preferably formed in the form of filament yarn bundles, but mono yarns can also be used.

6 is a means for generating a hollow shape of the hollow yarn (24 in FIG. 6). Examples of the material for the hollow yarn 12 include polylactic acid (PLA), polyvinyl chloride (PVA) Alcohol. The leaching yarn 12 is a part of a part which is to be formed at a portion where a hollow is to be formed and then removed in a post-treatment process using an eluting solution. Among PLA materials 12, PLA material is environmentally biodegradable and is fused at about 120 to 180 DEG C and dissolved in an alkali solvent, and PVA material in dissolving material 12 is dissolved in water.

In the present invention, in obtaining the twist yarn 14 by combining the low melting point yarn 10 for forming a skeleton and the hollow yarn 12 capable of being extracted by the leaching solution as described above in the present invention, 12 as the core yarn and the low melting point yarn 10 as the outer circumferential yarn to reduce the degree of twist of the joint yarn.

In the present invention, it is assumed that the shell yarn 16 can be sandwiched between the skeletons of the spiral-shaped low-melting point yarn 10, and the yarn 14 (the twist direction) The same setting of the tone of the yarn 16 is set.

When the twist yarn 14 and the outer yarn 16 are set to have the same yellowness, twist yarn 14 is additionally twisted as the twist yarn 16 is applied to the outer yarn 16 Entering will lead to lecture.

In the present invention, the degree of initial twist of the twist yarn 14 is lowered so as not to become lighter in view of this. As the laminating process becomes worse, the twisting of the twist yarn at the core part is increased, causing the occurrence of the snarl phenomenon and the degradation of the bubble formation.

The degree of initial twist of the twist yarn 14, particularly the degree of initial twist of the low melting point yarn 10, is lowered as in the present invention, thereby preventing such a phenomenon.

In the present invention, the range of the twist number indicating the degree of twist of the twisted yarn 14 is in the range of 50 to 3,500 TPM (Twist Per Meter), and the outer sheath 16 having the same twist as the twisted yarn 14 of the deep portion, The number of years that can be generated by the twisting of the twisted yarn 14 is set to the limit value. Therefore, the degree of twist of the twist yarn 14 is relatively lower than that of the combined yarn of the existing twist yarn having the opposite direction to the sheath yarn 16.

 The twist yarn 14 is twisted and twisted so that even when the twist yarn 14 is twisted together, the twist multiplier in which the thickness of the yarn and the twist degree act as variables, Lt; / RTI >

The number of connections (K) is expressed by the following relationship.

Here, K is a joint number, a twist per meter (TPM) indicates a twist degree, and a number (Nm) indicates a thread thickness.

The number of connections (K) is a value that determines the degree of twist given to the yarn as an absolute value with respect to the thread thickness. Even if the same number of twists (number of years) is given to threads having different thicknesses (counts) The number of kinks varies depending on the thickness of the yarn even if the number of joints is applied. The range of the coupling coefficient [K] for forming the twist yarn 14 of the present invention is 20 to 450.

If the number of joints [K] is less than 20, the spacing between the spiral twist and twist of the skeleton-forming low melting point yarn 10 remaining after eluting the bar yarn 12 having too little twist is widened The shape of the hollow is unclear, and the phenomenon of the shape instability such as the formed hollow dents may occur. On the other hand, when the number of connections [K] exceeds 450, the twist is excessively large, and the workability at the time of spinning of the outer sheath 16 is excessively reduced, the shearing overheat occurs during the heat treatment, If the spacing pitch is too dense, the leaching property of the leaching yarn 12 is deteriorated.

The adjustment of the soft water and the water channel which are different from those of the prior art according to the present invention can be achieved by covering the sheath yarn 14 on the core portion with the sheath yarn 16 but covering the outer sheath 16 with the sheath 14 ) In the same direction as that of the rainbow. For example, in the present invention, if the angle of the twist yarn 14 is the Z twist (left edge), the envelope yarn 16 also has a Z twist (left edge).

2, the twist yarn 14 becomes a core part, and the angle of the twist yarn 14, which has lowered the softness in consideration of the same twist, is shown in Fig. 2 as " x ".

The core yarn 14 is formed into a processed yarn 18 that is covered by the envelope yarn 16 in various manners such as spinning, covering, twisting, and the like and is capable of forming a hollow. The outer yarn 16 of the processed yarn 18 becomes a sheath part.

In the present invention, when forming the sheathing yarn 14 on the sheathing yarn 14, the sheathing yarn 16 is formed to cover the yarn 16 in the same direction as that of the twisted yarn 14 as shown in Fig. 3 There is a characteristic feature of obtaining the processed yarn 18 capable of forming a hollow.

For example, when the twist yarn 14 is twisted Z and the outer yarn 16 is also twisted Z, and when the twist yarn 14 is twisted S, S coincidence.

The envelope yarn 16 is a core address material representing the appearance and physical properties of the hollow yarn (24 in Fig. 5), and the raw material for use may be all the fiber materials. The sheath yarn 16 constitutes a sheath part on the outside of the twist yarn 14 in the state of the untreated processed yarn 18 such as elution, When the post-treatment such as dissolution of the outgoing yarn 12 is completed, the shape of the seed portion is stably maintained in accordance with the formation of the skeleton of the low melting point yarn 10 as in the hollow yarn 24 of FIG. 5, ) And the physical appearance of the whole.

According to the present invention, when the twist yarn 14 positioned at the core portion and the outer sheath yarn 16 positioned at the outer portion are formed in the same direction, when the hollow yarn 24 having the hollow portion 30 is provided, The low melting point yarn 10 welded to the core 16 serves as a helical skeleton, but the outer sheath 16 may sink into the hollow 30 between the helical skeletons.

In consideration of this point, in the present invention, the angle x1 of the low-melting point yarn 10 for forming a skeleton located at the deep portion of the processed yarn 16 formed to cover up to the outer sheath 16 is larger than the angle y ), Thereby eliminating the concern of depression of the outer sheath 16. Preferably, as shown in Fig. 3, the angle x1 of the low melting point yarn 10 for forming a skeleton positioned at the deep portion of the processed yarn 16 is formed to be relatively larger than the angle y of the outer sheath 16 Thereby eliminating the possibility of sinking of the outer sheath 16.

3, an angle x1 of the low melting point yarn 10 for forming a skeleton located at the deep portion of the processed yarn 16 is smaller than an initial angle y1 of the low melting point yarn 10 in the twist yarn 14 as shown in FIG. (x1> x), which is formed by additionally twisting the low melting point yarn 10 of the twist yarn 14 when covering the outer sheath 16.

That is, in the present invention, the angle x1 of the low melting point yarn 10 for forming the skeleton forming the deep portion of the processed yarn 18 is not limited to the angle y of the outer sheath 16, Is formed relatively larger than the melting point yarn 10 (x).

A preferred example of the present invention is an example in which the angle x1 of the low melting point yarn 10 for forming a skeleton located at the deep portion of the processed yarn 16 is formed differently from the angle y of the outer sheath 16, Melting point yarn 10 is formed to be relatively larger than the softening angle y of the outer sheath yarn 16 and the softening point yarn 10 of the low melting point yarn 10 is relatively larger than the softening angle x of the outer melting yarn 16. However, It is to be understood that the covering 16 may be provided with an abutment so as to be relatively smaller than the abutment y of the abutment 16.

The processed yarn 18 capable of forming a hollow is as shown in Fig. 3, and after the low melting point yarn 10 is fused and the leaching yarn 12 is eluted, a hollow yarn 24 in Fig. 6) is provided.

The post-treatment such as fusion and elution may be performed immediately in the state of the processed yarn 18 capable of forming a hollow.

1), the low melting point yarn 10 is applied to the life support terminal 20 after woven with the life support terminal 20 in order to ensure the commercialization and the morphological stability of the hollow 30, Such as heat treatment (step S8 in Fig. 1) and dissolution of the discharge yarn 12 (step S10 in Fig. 1), to obtain the fiber cloth 22 having the hollow yarn 24 desirable.

The processed yarns 18 capable of hollow formation are woven by using a weaving machine or a knitting machine (step S6 in Fig. 1) to obtain the life supporting unit 20 as shown in Fig.

The term " weaving " includes both weaving, weaving, and non-woven fabrics. In the weaving operation, the entire processed yarn 18 may be used or only a part of the weaving yarns 18 may be used.

It should be understood that when the partially used yarn 18 is used, it is preferable to apply the warped yarn in the case of weaving, and it may be used with general yarn even when used as weft yarn. If necessary, the processed yarn 18 may be used as a warp yarn.

2, the twist yarn 12 and the plain yarn are re-twisted together to form a mixed yarn. In this case, And the mixed yarn is covered with the outer sheath 16 to obtain the processed yarn of the modified embodiment. At this time, the outer sheath 16 is formed so as to be covered with the same color as that of the twist yarn 12, which is combined with the normal fiber yarn, to provide a processed yarn capable of forming a hollow, (X1) of the low melting point yarn 10 for forming a skeleton is formed differently from the angle y of the outer sheath yarn 16. [

The general fiber yarn is a fiber yarn which is not eluted into the eluting solution and is not fused at a low temperature such as the low melting point yarn 10. The use of such general yarn yarns reinforces the skeleton of the low melting point yarn 10 forming the skeleton As well as lowering the production costs of various production and fabrics.

The fiber cloth 22 finally obtained after the post-treatment is performed, that is, the fusion of the low melting point yarn 10 by the heat treatment and the dissolution of the discharge yarn 12, is as shown in Fig. 5, As shown in FIG. 5 and FIG. 6, each hollow yarn 24 present in the fabric 22 has a hollow 30 formed in the core by the leaching of the leached yarn 12. That is, the hollow 30 is formed in the core of the hard spiral low melting point yarn 10 serving as a skeleton, and the hollow yarn 24 having a structure in which the outer sheath 16 bonded to the low melting point yarn 10 forms a seed portion ).

7 to 9 are electron micrographic enlarged photographs of a textile fabric 22 having a hollow yarn 24 obtained according to an embodiment of the present invention.

As can be seen from the actual photograph of the hollow yarn 24, it is possible to see the hollow 30 forming the hollow yarn 24 and the solidified low melting point yarn 10 formed into the spiral skeleton, It is possible to see the outer covering yarn 16 wrapped around the low melting point yarn 10 in the same color as that of the green yarn 10.

Some exemplary embodiments for obtaining the fiber fabric 22 having the hollow yarns 24 according to the present invention will be described below.

( Example 1)

75 denier PLA (Poly Lactic Acid Yarn) as the center and 50 denier (D) low-melting yarn made of polyester as the outer circumference. Covering with Z 800T / M (Twist / Meter) Respectively.

The thus prepared covering yarn twisted yarn is used as a core portion, and a roving yarn is co-spun from a spinning machine to a Z twist 900T / M so as to be a sheath portion so that the yarn count (Ne) A spun yarn was prepared.

Then, the core spun yarn spun by the core was heat-treated at a dry heat of 190 ° C to fuse the low melting point yarn. The core spun yarn heat-treated so that the low melting point portion was fused was treated at a temperature of 98 캜 for 40 minutes in a solution in which 50% NaOH solution was diluted with 5% OWS (On the Weight of Solution) to elute the PLA portion Completed.

Example 2)

75 denier PLA (Poly Lactic Acid Yarn) as the center and 50 denier (D) low-melting yarn made of polyester as the outer circumference. Covering with Z 800T / M (Twist / Meter) Respectively.

The thus prepared covering yarn twisted yarn is used as a core portion, and a roving yarn is co-spun from a spinning machine to a Z twist 900T / M so as to be a sheath portion so that the yarn count (Ne) A spun yarn was prepared.

The core spun yarn was then woven in a conventional manner, but using a twill fabric to prepare a twill fabric.

Before processing the prepared fabric, it was heat-treated at 190 ° C in a heat treatment machine (Tenter) to melt the low melting point yarn.

Then, the fabric using the core spun yarn heat-treated so that the low melting point portion was fused was treated at a temperature of 98 ° C for 40 minutes in a solution in which 50% NaOH solution was diluted with 5% OWS to elute the PLA portion Respectively.

The hollow yarns (lightweighting ratios) of the fabric prepared in Examples 1 and 2 are as follows.

division Weight before release Weight after elution Hollow rate
(Lightening rate) Remarks Example 1 100g 67g 33% For confirmation of the hollow form of yarn
Examples. Example 2 100g 81g 19% This is an example for confirming the hollow formation after fabricating.
In the case of using all the amount of the precursor,
Become the same hollow ratio

As shown in Table 1, the hollow yarn 24 according to the present invention has a hollow ratio of about 30%, a hollow ratio of less than 30%, minimizes distortion of the hollow shape, and is excellent in shape stability and durability. The strength of the yarn including the strength of the yarn and the quality of the yarn are excellent.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of claims and equivalents thereof.

(10) - Low melting point yarn (12) - Outgoing yarn
(14) - twist yarn (16) - sheath yarn
(18) - Processed yarn (20) - Life support team
(22) - Hollow fiber yarn (24) - Hollow yarn
(28) - skeleton part (30) - hollow

Claims (11)

A low melting point yarn for forming a skeleton and a hollow forming yarn capable of being eluted by an elution solution are combined to obtain a twist yarn to be positioned at the core portion. The twist yarn is covered with an outer yarn, and the same is formed in the same direction as the twist yarn, Melting point yarn for forming a skeleton is formed differently from an angle of an outer sheath yarn, and the fusion of the low-melting sheath yarn in the processed yarn and the elution of the out- So that a hollow yarn having an inner hollow can be prepared through post-processing.
A low melting point yarn for forming a skeleton and an outflow yarn for hollow formation capable of being eluted by an elution solution are combined to obtain a twist yarn to be placed at a deep portion and the mixed yarn obtained by combining the twist yarn and the ordinary yarn is wound in an envelope yarn, Wherein the lower end of the low melting point yarn for forming the skeleton is formed to have a shape different from that of the sheath yarn. Wherein a hollow mixed yarn having an inner hollow can be provided through a post-treatment including fusion of a melting point yarn and elution of an outgoing yarn.
[3] The method according to claim 1 or 2, wherein the angle of the low melting point yarn for forming the skeleton forming the deep portion of the processed yarn is relatively larger than the initial angle of the low melting point yarn when forming the horn and the twist of the sheath yarn. Type yarn.
A low melting point yarn for forming a skeleton and a hollow forming yarn capable of being eluted by an elution solution are combined to obtain a twist yarn to be positioned at the core portion. The twist yarn is covered with an outer yarn, and the same is formed in the same direction as the twist yarn, And the knitted fabric of the low melting point yarn for forming the skeleton forming the deep part of the processed yarn is formed differently from the knitted fabric of the outer sheath yarn. The supporting support is heat treated to melt the low-melting point yarn to each processed yarn of the raw material support so as to form a skeletal portion and to dissolve the discharged yarn into the eluting solution, thereby forming a hollow in the deep portion of each processed yarn Characterized in that the fabric has a hollow yarn.
A low melting point yarn for forming a skeleton and an outflow yarn for hollow formation capable of being eluted by an elution solution are combined to obtain a twist yarn to be placed at a deep portion and the mixed yarn obtained by combining the twist yarn and the ordinary yarn is wound in an envelope yarn, And an embossed portion of the low melting point yarn for forming a skeleton formed in the core of the processed yarn is formed differently from an embossed yarn of the outer sheath yarn, The raw support section is heat treated so that the processed support yarn is formed by weaving processed yarn capable of hollow formation. The raw support section is fused to each of the processed yarns of the raw support section to fuse a low melting point yarn to form a skeleton section. Characterized in that a hollow is formed in the core of the yarn.
[5] The method according to claim 4 or 5, wherein the angle of the low melting point yarn for forming the skeleton forming the deep part of the processed yarn is relatively larger than the initial angle of the low melting point yarn when forming the horn and the twist of the sheath yarn. Fabrics having a shaped yarn.
A low melting point yarn for forming a skeleton and a hollow forming yarn capable of being eluted by an elution solution are combined to obtain a twist yarn to be positioned at the core portion. The twist yarn is covered with an outer yarn, and the same is formed in the same direction as the twist yarn, Melting point yarn for forming a skeleton is formed differently from an angle of an outer sheath yarn for forming a core of the processed yarn, and a post-treatment including fusion of the low-melting point yarn in the processed yarn and elution of the out- To obtain a hollow yarn having an inner hollow.
A low melting point yarn for forming a skeleton and an outflow yarn for hollow formation capable of being eluted by an elution solution are combined to obtain a twist yarn to be placed at a deep portion and the mixed yarn obtained by combining the twist yarn and the ordinary yarn is wound in an envelope yarn, Wherein the core of the low melting point yarn for forming the skeleton forming the core of the processed yarn is formed to be different from that of the outer sheath yarn, Characterized in that a hollow mixed yarn having an inner hollow is obtained through a post-treatment including fusion and dissolution of an outflow yarn.
A low melting point yarn for forming a skeleton and a hollow forming yarn capable of being eluted by an elution solution are combined to obtain a twist yarn to be positioned at the core portion. The twist yarn is covered with an outer yarn, and the same is formed in the same direction as the twist yarn, And the knitted fabric of the low melting point yarn for forming the skeleton forming the deep part of the processed yarn is formed to be different from the knitted fabric of the outer sheath yarn, Then, a low-melting point yarn is fused to each processed yarn of the raw material support by the heat treatment of the raw material support to form a skeleton part and the discharged yarn is eluted with the eluting solution to obtain a fiber fabric having hollows at the deep part of each processed yarn Wherein the hollow fiber yarn has a hollow fiber yarn.
A low melting point yarn for forming a skeleton and an outflow yarn for hollow formation capable of being eluted by an elution solution are combined to obtain a twist yarn to be placed at a deep portion and the mixed yarn obtained by combining the twist yarn and the ordinary yarn is wound in an envelope yarn, The present invention provides a processed yarn which can be formed into a hollow shape by coating the same in the same direction as that of a green yarn and is formed so as to be formed differently from an edge of a low melting point yarn for forming a skeleton forming a deep portion of the processed yarn, The raw support section is formed by weaving a processed yarn capable of forming a hollow and then the raw support section is heat treated so that a low melting point yarn is fused to each processed yarn of the raw support section to form a skeleton section and the discharged yarn is eluted with the eluting solution, Characterized in that a hollow fiber yarn is obtained in which a hollow portion is formed in the core portion of the yarn.
11. The hollow yarn according to claim 9 or 10, wherein the softening yarn located at the deep portion has a softening range of 50 to 3,500 TPM (Twist Per Meter), and the number of connected kinks [K] ≪ / RTI >

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