WO2011122793A2

WO2011122793A2 - Upper distribution spinneret plate for manufacturing sea island fiber, and spinneret including same for manufacturing sea island fiber

Info

Publication number: WO2011122793A2
Application number: PCT/KR2011/002058
Authority: WO
Inventors: 지성대; 김규창; 조덕재; 김진수; 김도현; 양인영; 이현수
Original assignee: 웅진케미칼 주식회사
Priority date: 2010-03-29
Filing date: 2011-03-25
Publication date: 2011-10-06
Also published as: KR101249643B1; WO2011122793A3; KR20110108465A

Abstract

The present invention relates to an upper distribution spinneret plate for manufacturing sea island fiber, and to a spinneret including same for manufacturing sea island fiber. Island component conglomeration does not occur in the sea island fiber manufactured using the upper distribution spinneret plate of the invention, even when the number of island components exceeds 500, as sea components can be easily filled in the center of sea island fiber and within an island component supplying part.

Description

【Specification】

[Name of invention]

Depot partial distribution plate for island-in-the-sea yarn production and spinneret for island-in-the-sea yarn production comprising the same

Technical Field I

The present invention relates to a detention part partial distribution plate for island-in-the-sea yarn production, and a spinneret for manufacturing island-in-the-sea islands including the same. It relates to a spinneret for producing sea island yarn containing.

Background Art

The island-in-the-sea yarn is a yarn with a cross-sectional structure in which island components are dispersed in the sea component, and since the sea component is left only when the sea component is eluted or dissolved in the post-processing process after spinning, waste of resin and solvents to elute the sea component Although there is a problem of increased cost and environmental pollution due to use, it is widely used as a yarn for manufacturing industrial materials such as artificial suede, filter, and cleaning products because it is possible to manufacture ultra microfibers which cannot be obtained with a conventional micro fiber manufacturing method. ᅳ

In conventional sea island yarns, sea component is the component that elutes or dissolves in the post-processing process after spinning, and the seaweed component is the component that continues to form fibers after removing the sea component. The process of manufacturing and the like has to go through various steps such as weight loss, brushing, and dyeing. Above all, the fineness and uniformity of fineness of the finely-contained fiber components are very important in stabilization of quality. Intra-sectional arrangement and composition of the fibrous fibers is a key factor in determining quality.

Therefore, in order to maximize the utilization of island components, island-in-the-sea yarns are manufactured by complex spinning in island-in-sea form using alkali-soluble polymers as sea components and fiber-forming polymers as island components. It is produced for the purpose of making fibers. In other words, after preparing sea island yarn, it is treated with an alkaline solution to elute the alkaline soluble polymer phosphorus component, thereby producing an ultrafine fiber composed only of the island component. As described above, the method of manufacturing ultrafine fibers from island-in-the-sea yarns has the advantages of superior spinning and stretching operations and more fineness of fine fibers compared to the method of producing ultrafine fibers by direct spinning, while weaving or knitting In the processing process, the process of eluting and removing the degradable powder polymer with an organic solvent is required. The quality of the final agent can be improved depending on the degree of fineness of the fibrous component fiber, so that the fineness of the fibrous component fiber can be further refined. It is true that a lot of research and development is in progress. [5] The technology commercially available up to now is that the number of island component fibers is less than 37, and the fineness of the finely divided island component fibers remains at 0.05 denier. Therefore, so expanding the number of island component fibers over 38 can stand for the fineness of the island component fibers technology capable of producing 0.04 denier aha is necessary _'

However, when the number of island components is 38 or more, the cross-sectional formation structure is very important, and the arrangement of island component fibers in the island-in-the-sea yarn cross section must be designed very precisely. Specifically, FIG. La is a cross-sectional view of the upper portion of the upper plate distribution plate of the spinnerette for sea island sand bath for producing a conventional sea island. Specifically, the spinnerets for sea island manufacturing

The upper mold distribution plate 1 surrounds the island component supply section 2 to which the island component polymer is supplied and a portion of the outer circumferential surface of the island component supply section 2, and the sea component polymer is supplied.

It consists of a supply part (3). Among them, the conductive component supply unit 2 is typically formed with a plurality of conductive component supply passages 5 radially around a single spinning core 4, and according to the desired number of conductive components, The number may vary. The sea component supply path 6 is formed in the sea component supply part 3 surrounding the outer periphery of the island component supply part 2. In the upper holding plate of the island-in-the-sea spinning spinneret of FIG. La, when the island component and the sea component are injected through the respective supply paths, the sea component supplied to the sea component supply path 6 in the inside of the spinneret is the island component supply part. It flows into (2) and surrounds the island component supply path 5 while filling the inside of the island component supply unit 2. Through this process it is possible to produce a sea island yarn having a plurality of island components formed inside the sea component.

Lb, lc is a cross-section of the conventional islands of the art seaweed (331 degree island components) radiated through the spinneret of FIG. La described above, and FIG. Lb centers one spinning core 11 inside the islands of the island The furnace components (12) are arranged concentrically and the cross-sectional area of the core in the total islands-in-the-sea yarn is 60-70%. In FIG. Lc, the island components 14 are arranged concentrically around a single spinning core 13 in the island-in-the-sea yarn, and the cross-sectional area occupied by the island components in the cross-sectional area of the whole island-in-the-sea yarn is 70 to 8 OT. This cross-sectional structure is not abnormal when the number of island components is small, but when the number of island components increases (about 300 or more) or when the cross-sectional area of the island components increases, the radiation core 11 formed at the center of the island is also formed. In the case of adjacent island components, the layering of sea components becomes difficult and the density of island components becomes large, resulting in agglomeration of the earth components in the spinning process around the spinning core during the spinning process. In other words, the number of island components in sea islands increases and the cross-sectional area increases, making it difficult to layer sea components in the center portion of islands. From this point of view, it is necessary to expand the arrangement of islands in the islands with 37 or less conventional fiber components. Since the stable formation of the cross section cannot be secured, a special design technique for the arrangement of the island component fibers in the island-in-the-sea yarn cross section is urgently required.

[Detailed Description of the Invention]

[Technical problem]

The present invention has been made to solve the above-described problems, the first object of the present invention is to prevent the aggregation of the island component while having a color development and can improve the cow phenomenon when applied to the brightness enhancement film (C) to provide a captive partial distribution for manufacturing;

The second object of the present invention is to provide a spinneret for manufacturing island-in-the-sea yarns, which can produce more than 20,000 islands-in-the-sea islands, including the above-mentioned delimiter partial plate for island-in-the-sea manufacturing.

Technical Solution

In order to achieve the above-mentioned first object, the present invention provides a delimiter partial plate for island-in-the-sea yarn dispensing for dispensing the island component polymer and the sea component polymer, wherein the detention plate partial plate is formed at the center and prevents misalignment. The core portion is formed radially around the core portion, and the plurality of island component supply passages are formed along the outer periphery of the island component supply portion and the island component supply portion formed therein, and include a plurality of sea component supply passages. Provided is a depressor partial distribution plate for island-in-the-sea yarn production comprising a plurality of sea component supply units.

According to a preferred embodiment of the present invention, the core portion may be a through hole or a closed hole.

According to another preferred embodiment of the present invention, the core portion may have a circular or polygonal cross-sectional shape.

According to another preferred embodiment of the present invention, the long axis length of the cross section of the core portion may be 10 ~ 40 醒.

According to another preferred embodiment of the present invention, the cross-sectional area of the core portion is 50 ~

5200 fliirf.

According to another preferred embodiment of the present invention, the core portion may not include any one or more of the island component supply passage and the sea component supply passage therein.

According to another preferred embodiment of the present invention, the inside of one island component supply unit The number of island component supply paths included in the number may be 300 to 1500.

According to another preferred embodiment of the present invention, the plurality of island component supply units may be 10 to 100.

According to another preferred embodiment of the present invention, the sea component supply unit core portion

It may be formed along the outer periphery of <19>.

According to another preferred embodiment of the present invention, a sea component supply portion is formed between the plurality of island component supply portions to partition the island component supply portion.

According to another preferred embodiment of the present invention, the number of sea component supply paths included in one sea component supply unit may be 60 to 2500.

According to another preferred embodiment of the present invention, the sea component supply unit may be formed continuously along the outer circumference of the island component supply unit, more preferably the plurality of island component supply units are each formed by the sea component supply unit. It can be enclosed.

According to another preferred embodiment of the present invention, the number of total island component supply paths included in the plurality of island component supply units may be 20000-30000.

According to another preferred example of the present invention, the total number of sea component supply paths formed in the plurality of sea component supply units may be 1000 to 30000.

According to another preferred embodiment of the present invention, the island component supply unit may have a fan shape, an isosceles triangle, and an isosceles trapezoid.

The present invention provides a spinneret for manufacturing island-in-the-sea yarns including the above-described sphere-shaped partial plate for island-in-the-sea yarn production in order to achieve the above-mentioned second object.

According to another preferred embodiment of the present invention, the lower portion of the capped upper portion of the lower plate is formed with a discharge port for collecting and discharging the polymers passing through the plurality of island component supply portion and the plurality of sea component supply portion Can contain detention plates

According to another preferred embodiment of the present invention, the lower tab plate has one or more flow paths for guiding the sea component polymer passed through the metal powder supply portion and the sea component polymer passed through the sea component supply portion to the discharge port. More preferably, the discharge port may be formed in an area where the flow path and the flow path cross each other.

The overview of the <29> As used herein, the _term,

Unless otherwise stated, the term "detentional partial distribution plate for sea island yarn" refers to spinning that distributes the seaweed and the polymer of the island component without mixing through each flow path to form a cross section of a constant fiber. Means parts in detention.

<31>'Radiantcore' means the process of ceramic components based on the detentional partial distribution of the spinneret If the rapids are arranged in groups (groups) around a certain point in the interior, that means a certain point.

<32> 'Photochromic fibers' are not colored by physical / chemical combinations of materials that have a color such as dyes or pigments, but rather by the interference of light due to the structural and optical design of the fibers. It means the fiber to be expressed.

<33> 'Fiber has birefringence' means that when light is irradiated on fibers with different refractive indices depending on the direction, the light incident on the polymer is refracted by two different directions of light.

'Isotropic' means that when light passes through an object, the refractive index is constant regardless of the direction.

<35> 'Axotropic' means that the optical properties of an object vary depending on the direction of light. This anisotropic object has birefringence and corresponds to isotropy.

'Light modulation' means that the irradiated light reflects, refracts, scatters, or changes in light intensity, wave periodicity, or light properties.

"Monosa" refers to a type of fiber which is usually used as a single thread given by twisting several strands of yarn, and wound up with only one strand of yarn.

"Fur phenomenon" refers to a defect that appears by cutting some of the fibers of the number of fibers constituting the plywood.

Advantageous Effects

<39> The island-shaped partial distribution plate for island-in-the-sea yarn production according to the present invention includes a core part for preventing the joining at the center, and the island-in-the-sea yarn manufactured through the spinneret including the same since the island component supply unit is partitioned by the sea component supply unit. The sea component can be easily filled in the center of the island-in-the-sea yarn and the inside of the island component supply unit, so that no seam bonding occurs.

Therefore, since more than 20,000 islands can be arranged in one island island, the fineness of islands can be reduced, which is very advantageous for producing microfiber yarn, and more than 20,000 islands of ultrafine yarn can be produced in one island island. Significantly reduce production costs

In addition, the island-in-the-sea yarn manufactured through the spinneret for producing the island-in-the-sea yarn of the present invention expresses a specific color according to the ratio and fiber diameter without adding a compound causing color development such as dye due to the excellent light modulation effect. It can be utilized as a coloring fiber. The photochromic fiber of the present invention can be colored in various colors according to the intensity, position and viewing angle of light. Furthermore, when the island-in-the-sea yarn manufactured through the spinneret for manufacturing the island-in-the-sea yarn of the present invention has different optical properties of the island component and the sea component, since the optical modulation interface is formed at the light interface between the island component and the sea component, the conventional birefringence It can maximize the light modulation effect compared to the fiber, and even if the number of components increases, the components do not aggregate. Therefore, the area of the light modulation interface can be maximized as compared with the conventional islands-in-the-sea yarn having one radiation core, and thus the light modulation effect is significantly increased. Therefore, the luminance-enhanced film including the island-in-the-sea yarn of the present invention has an excellent light modulation effect, so that the luminance is significantly improved as compared with the case of using ordinary birefringent fibers or island-in-the-sea yarns. In addition, when manufacturing the island-in-the-sea yarn having more than 20,000 island components through the spinneret of the present invention, it can be used for the luminance-enhanced film to prevent the occurrence of hairy phenomenon.

[Brief Description of Drawings]

FIG. La is a cross-sectional view of a spherical partial plate in a spinneret for manufacturing a conventional islands and seams, and FIGS. Lb and lc are electron micrographs of a conventional islands and seams cross section manufactured through the same.

Figure 2 is a cross-sectional view of the detentional partial plate according to an embodiment of the present invention.

3A and 3B are SEM cross-sectional views of islands with 25,000 number of island components manufactured through spinnerets including the depressed partial plate according to the preferred embodiment.

4 is a cross-sectional view of the detention part partial plate according to another preferred embodiment of the present invention.

5 is a cross-sectional view of the lower metal plate according to an embodiment of the present invention.

[Best form for implementation of the invention]

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

As described above, the island-in-the-sea yarn manufactured through the spinneret gold including the spherical partial distribution plate for the conventional island-in-the-sea yarn manufacturing is also arranged in a concentric shape with a concentric element around a single spinning core inside the island-in-the-sea yarn. The island components are randomly arranged without the stiffness, but the structure of such a cross section is no problem when the number of island components is small, but when the number of island components increases (about 300 or more), it is adjacent to the spinning core formed at the center of the island. In the case of one island component, the density becomes larger, and the spinning process occurs in the core part located around the spinning core. In other words, as the number of island components in the island is increased, There is a side effect of the masses forming together.

According to an embodiment of the present invention, the island component polymer and the sea component polymer are distributed. In the island-like partial plate for manufacturing sea island yarn, the cage portion partial plate is formed in the center and prevents the joining, the core portion is formed radially around the core portion, a plurality of island component supply passages are formed in the plurality The number of island components is provided by providing a plurality of island components for the island-in-the-sea yarn manufacturing, which is formed along the outer circumference of the island component supply section and the sea component supply section and includes a plurality of sea component supply sections including a plurality of sea component supply paths. Even in the case of manufacturing sea island sand, it is possible to produce sea island sand which can prevent the joining.

<5i> Each configuration of the capillary upper part plate 120 for producing island-in-the-sea yarn in accordance with an aspect of the present invention will be described with reference to FIG. 2. A cross-sectional view of the partial plate is specifically formed in the center and is formed in the center of the core portion 121 to prevent the joining, radially around the core portion 121, a plurality of island component supply paths 122 And a plurality of sea component supply units 125 formed along the outer circumference of the island component supply units 123 and 124 and the island component supply units 123 and 124 and including a plurality of sea component supply paths.

First, the core portion 121 formed in the center of the detentional partial plate 120 will be described. In the present invention, the core portion 121 is formed in the center of the detentional partial plate 120 and is subjected to the conjugation. As described above, as the number of island components increases, the degree of sea component formation becomes difficult in the central portion, so that the degree of island components in the center of the islands such as lb are bundled. The phenomenon occurred. Accordingly, in the present invention, the core portion 121 is formed at the center of the detentional partial plate 120 to prevent the joining. In this case, the core part 121 may be sufficient as long as it can prevent the joining, and the shape of the core part 121 may be a through hole, a closed hole, or another shape. However, a thin support member that can be formed at the center of the detentional partial distribution board to fix the detentional partial distribution board to the spinneret or a bolting space for assembling when assembling the spinneret can solve the seam conjugation phenomenon. Since it does not exist, it does not correspond to the core part 121 of this invention.

Furthermore, according to another preferred embodiment of the present invention, the core portion may have a circular cross section or a polygon such as a square, a pentagon, an octagon, etc. Meanwhile, the core portion 121 may be used to prevent the joining. It is advantageous to not include the island component supply passage and / or the sea component supply passage in the interior thereof. This is because the number of island components may be increased, especially in the case of including the island component feed in the core portion 121, but the density of the ceramic component in the center of the island is increased, which increases the possibility of the joining.

On the other hand, preferably the long axis length of the cross section of the core portion may be 10 ~ 40 讓. The long axis means diameter when the shape of the core part is circular, and means the length of the longest diagonal line when the elliptical shape is the long axis and the polygon shape. If the long axis length of the cross section of the core is less than 10 匪, conduit may occur. If it exceeds 40 匪, the limit of the area for forming the supply component becomes severe, which may make it difficult to secure a sufficient number of constitutions. have.

In addition, preferably the cross-sectional area of the core portion may be 50 ~ 5200nmf. If the cross-sectional area of the core portion is less than 50 mn, the conductive bonding may occur. If the cross-sectional area of the core portion exceeds 5200 mrf, it may be difficult to secure the number of finely divided components for the production of ultrafine fibers, but the present invention is not limited thereto. If the cross-sectional area of the seam yarn is large, the cross-sectional area of the partial plate is to be large, so the cross-sectional area of the core for preventing the joining should be wide. It is possible to reduce the cross-sectional area of the core portion to prevent the joining. As a result, the cross-sectional area of the core part may be elastically adjusted in consideration of the number and the cross-sectional area of the island component of the island-in-the-sea yarn manufactured to prevent the seaming of the island-in-the-sea yarn manufactured.

Next, a plurality of island component supply units 123, 124 are arranged radially around the core portion 121. The island component supply units 123, 124 of the present invention have a plurality of conductive elements therein. Including a supply path 122, it is arranged radially about the core portion 121. The island component polymers are introduced into the island component supply path 122 formed inside the island component supply units 123 and 124 to form island island components in the island-in-the-sea yarn. In this case, one island component supply unit 123 is preferred. The number of island component supply passages 122 included in the inside may be 300 to 1500. If the number of the island component supply paths 122 is less than 300, the degree of the degree of island component is reduced, but the number of island components is reduced. There is a problem that does not improve, and if the number exceeds 1500, the number of island components is excessively large, which may lead to the phenomenon of the doping.

Also preferably, the total number of the island component supply passages is preferably 2000 or more, more preferably 10000 or more, and most preferably 20000 or more. As the number increases, the number of island components of the island-in-the-sea yarn that is radiated is increased so that not only a very large number of microfibers can be produced, but also included in the luminance-enhanced film can greatly improve the light modulation effect. In particular, if the number of island component supply paths is 10000 or more, Since the number is more than 10000, weaving can be done with weft or warp yarns within 5 strands (preferably mono yarn) without weaving sea island yarn, so that trimming does not occur, so that it is possible to prevent the phenomenon.

On the other hand, the shape of the island component supply portion of the present invention has a shape in which the cross-sectional area of the water from the core portion 121 to the outside increases, it is advantageous to facilitate the penetration of sea components to prevent the conduction. Fan-shaped, isosceles triangles, isosceles trapezoidal shape, and most preferably the fan-shaped shape as shown in FIG. Furthermore, the shape of the island component feeder may also be provided in various shapes such as oval, square, polygon, as well as circular.

Next, a plurality of sea component supply units 126, 127, and 128 formed along the outer periphery of the island component supply units 123 and 124 and including a plurality of marine component supply passages 125 will be described. Referring to Figure 2 describes the sea component supply unit 126, 127, 128 of the present invention

Is formed along the outer periphery of the island component supply unit (123, 124)

The sea component supply path 125 may be included. Preferably, the sea component supply unit 128 is

It may be formed continuously along the outer periphery of the core portion 121, more preferably phase ^. The sea component supply unit 126 is formed between the plurality of island component supply units 123 and 124 to partition the island component supply units 123 and 124. In other words, the plurality of island component supply units are surrounded by the sea component supply units, and spaces are generated between the island component supply units. In this case, the shape of one island component supply unit may be a fan shape as shown in FIG. 2, but is not limited thereto. More preferably, the sea component supply units 126, 127, and 128 may be formed around the one island component supply unit 123. Since it is all wrapped, the non-bonded form between the neighboring island component supply units 123 and 124 is advantageous to prevent the seam junction by infiltrating the sea component evenly between the island components. On the other hand, most preferably along the outer periphery of the core portion 121

Be sea component supply 126 is continuously formed to the sea component can be supplied to the minute parts of the core may be radiated in this case it's possible to prevent the degree of bonding of the island component dense _"

3A and 3B are SEM images of a cross-section of the island-in-the-sea yarns radiated through the spinneret including the detention part partial plate of FIG. 2 (20 degree component supply parts and 25000 number of total degree component supply paths). The island components are arranged radially around the center of the island, and the total number of island components is 25,000. As can be seen from Figure 3a, 3b it can be seen that even though the number of island components is significantly increased, the joints do not occur in the central portion of the island. FIG. 4 is a cross-sectional partial plate and cross-sectional view according to another embodiment of the present invention, so that the sea component supply passage 210 may be formed across the island component supply passage to facilitate the supply of the sea component.

On the other hand, as long as it is possible to manufacture sea islands and to prevent coupling, the number of sea component supply paths included in one sea component supply unit is not limited and may be variously designed according to the specifications of sea islands to be manufactured. Preferably, the number of sea component supply paths included in one sea component supply part may be 3 to 25, and the total number of sea component supply paths may be 60 to 2500 pieces. In addition, the number of sea component supply paths formed in the sea component supply unit 126 continuously formed along the outer circumference of the core unit 121 may be 20 to 500,

Meanwhile, the diameter of the island component supply passage and the sea component supply passage used in the present invention may be variously designed depending on the composition of the island-in-the-sea yarn manufactured. Preferably, the diameter of the island component supply passage is 0.1-1. „3 隨, and the diameter of the sea component feed path may be 0.2 to 2.0 있으나, but is not limited thereto.

In addition, the shape of the cross-section of the portion of the crest of the upper plate of the present invention may be circular, but it is possible to design by deforming to various shapes of the portion of the crest of the upper plate according to the shape of the desired sea island, when the shape of the cross-section is circular The diameter of the cross section of the spherical partial plate may vary depending on the diameter of the desired island-in-the-sea yarn, and may preferably be 70 to 250 mm 3. In addition, the thickness of the detention part partial plate may be 10 ~ 30mm, but is not limited thereto.

According to another aspect of the present invention, there is provided a spinneret for producing island-in-the-sea yarns including the above-mentioned detentional partial plate. The spinneret may include the above-mentioned detention part partial plate, and in this case, it may be used in various combinations according to the shape and specification of the desired island-in-the-sea yarn. The discharge port, which is the portion where the actual sea island is discharged, may be configured in the shape of a funnel with a lower plate. On the other hand, as shown in FIG. 5, the lower plate 130 is a polymer supplied from each island component supply unit and sea component supply unit. Flow paths 52 and 53 to allow them to flow toward one discharge port 131. In this case, the flow paths 132 and 133 may be designed in various numbers and shapes according to the arrangement of the spinneret, and the discharge port 131 may be formed in the area where the flow path and the flow path intersect. The diameter of the can be 0,2 ~ 10 誦, the length of the flow path can be 40 ~ 120 ，, the width of the flow path can be 3 ~ 10 讓. The width of the lower plate may be less than or equal to the width of the upper portion of the upper plate, and the length may be 3 ~ 30 匪, but is not limited thereto.

<66> Furthermore, the distribution and mixing of island and sea components in addition to the detentional partial plate of the present invention In order to facilitate, it is also possible to form a spinneret by providing a separate distribution plate with an appropriate number on the upper and / or lower part of the upper part of the upper part of the upper part of the upper part.

Meanwhile, in the island-in-the-sea yarn manufactured through the spinneret for manufacturing the island-in-the-sea yarn of the present invention, a liquid crystal display brightness-enhancing film including the same may be manufactured when the sea portion is still used without elution.

The conventional liquid crystal display device does not necessarily have a high utilization efficiency of light emitted from the backlight. This is because more than 50% of the light emitted from the backlight is absorbed by the back side optical film. Therefore, in order to increase the utilization efficiency of the backlight light in the liquid crystal display device, a brightness enhancing film is installed between the optical cavity and the liquid crystal assembly. However, in the conventional luminance-enhanced film, an isotropic optical layer and an anisotropic optical layer of a plate having different refractive indices are alternately stacked, and are stretched and processed to optically between each optical layer that can be optimized for selective reflection and transmission of incident polarization. Since it is manufactured to have thickness and refraction, there is a problem that the manufacturing process of the luminance-enhanced film is complicated.

In particular, since each optical layer of the luminance-enhanced film has a flat plate structure, it is necessary to separate P-polarized light and S-polarized light in response to a wide range of incident angles, so that the number of optical layers is excessively increased. There was a problem that the production cost increases exponentially. Also, due to the structure in which the number of optical layers is excessively formed, there is a problem in that optical performance decreases due to light loss.

In addition, by placing the island-in-the-sea yarn manufactured through the spinneret for manufacturing the island-in-the-sea yarn of the present invention, the light incident from the light source is reflected, scattered, and refracted at the birefringence 'stiffness interface, which is a hard interface between the group-like islands and isotropic substrate The brightness can be greatly improved by generating light modulation. Specifically, light emitted from an external light source can be largely divided into S-polarized light and P-polarized light. If only a specific polarized light is desired, P-polarized light can affect the birefringent interface. While passing through the luminance-enhanced film without being received, the S-polarized light is modulated into a wavelength of random refraction, scattering, and reflection at the birefringent interface, that is, S-polarized light or P-polarized light, and is reflected by a reflecting plate near the light source. When irradiated on the luminance-enhanced film again, P-polarized light passes through the luminance-enhanced film and S-polarized light is scattered or reflected again. Therefore, when a plurality of group islands-in-the-sea yarns having a birefringent interface at the hard interface with the substrate are arranged in the substrate, the luminance can be significantly reduced even without forming a conventional luminance-enhanced film in a laminated form. You can improve it

Furthermore, the inventors of the present invention do not manufacture the laminate in the case of using the general birefringent fiber as the polymer having the birefringent interface, and thus the production cost is low. It is easy to produce, but the effect of brightness enhancement is insignificant, and it has been found that there is a problem that is difficult to be applied to industrial sites in place of the laminated brightness enhancing film described above.

The birefringent island-in-the-sea yarn is overcome by using the birefringent island-in-the-sea yarn as the polymer having the birefringent interface. Specifically, the use of the birefringent island-in-the-sea yarn improves the light modulation efficiency and the luminance compared to the case of using the conventional fiber. It was confirmed that the effect of was remarkably improved. More specifically, the island portion of the islands constituting the island-in-the-sea yarn has anisotropy, and the sea portion partitioning the island portion is isotropic. Since the interface between a plurality of islands and seas also has a birefringent interface, the optical modulation effect is remarkably increased as compared with a conventional birefringent fiber in which a birefringent interface is generated only at the hard interface between the substrate and the birefringent fiber. It can be applied to the actual industrial field by replacing the laminated luminance-enhanced film. Therefore, the use of birefringent island-in-the-sea yarn is superior to the conventional and birefringent fibers, and the efficiency of luminance enhancement is high. Due to the different optical properties of islands and seas, the birefringent interface can be formed inside the islands. The luminance enhancement efficiency is remarkably improved in comparison with the case where there is no one. Specifically, in the island-in-the-sea islands including the optically isotropic solution part and the island part having the anisotropy, a substantial coincidence or disparity of the refractive indices along the XJ and Z axes in space is shown. The magnitude of the coincidence affects the degree of scattering of light polarized along its axis. In general, the scattering power varies in proportion to the square of the refractive index mismatch. Thus, the greater the degree of mismatch of the refractive indices along a particular axis, the stronger the scattered light is polarized along that axis. If the axis mismatch is small, the light polarized along that axis is scattered to a lesser extent. When the index of refraction of the sea portion along a certain axis substantially coincides with the index of refraction of the island, the incident light polarized by the electric field parallel to these axes does not scatter the islands without scattering regardless of the size, shape, and density of the islands. Will pass through. In addition, when the refractive indices along that axis are substantially coincident, the light beam passes through the object without being substantially scattered. More specifically, Fig. 5 is a cross-sectional view showing the path of light transmitted through the birefringent islands of the present invention. In this case, the P wave (solid line) is the interfacial part of the birefringent islands and the inside and sea portion of the birefringent islands. Although the S-wave (dotted line) is transmitted without being affected by the birefringent interface at the hard interface, the S-wave (dotted line) affects the interface between the substrate and the birefringent island-in-the-sea yarn and / or the birefringent interface of the seam and sea areas in the birefringent island-in-the-sea yarn. The modulation of the light takes place. As a result, the group sea island sand of the present invention exhibits sea island ratio and specific color according to the fiber diameter without adding dye or the like. It can be used as a photochromic fiber.

Meanwhile, in the present invention, it is preferable that the refractive index of the island portion and the sea portion of the island-in-the-sea yarn is 0.05 or less in difference in the two axial directions and at least one difference in the refractive index in the axial direction. In this case, P wave passes through the birefringent interface of island-in-the-sea yarn, but S wave can cause light modulation. More preferably, the difference in refractive index with respect to the hooking direction of the sea portion and the seam portion of the island-in-the-sea yarn is not less than 0.1, and the light modulation when the sea portion and the seam portion in the remaining two axial directions substantially coincide with each other. Efficiency can be maximized. As a result, in order to maximize the light modulation efficiency of island-in-the-sea yarn as described above, the optical properties of the island portion and the sea portion should be different, and the area of the light modulation interface should be wide. For this purpose, the number of islands should be large, and preferably the number of islands should exceed 500. However, as described above, the refractive index of islands is anisotropic and the refractive index of sea portions is isotropic in conventional islands and islands. However, if the number of the drawing parts exceeds 500, the drawing parts may be agglomerated, and the area of the light modulation interface is reduced, resulting in a fatal problem of low light modulation efficiency.

In the case of manufacturing the island-in-the-sea yarn through the spinneret including the depressor partial plate for the island-in-the-sea yarn manufacturing of the present invention, even when the number of the island portions exceeds 500, it is preferred that 2000 No conjugation occurs even when more than 100, more preferably more than 10000, more preferably more than 20000, most preferably more than 25000 islands are formed, so that the light modulation efficiency of the island-in-the-sea yarn is maximized. When the island-in-the-sea yarn radiated through the spinneret of the present invention is added to the brightness reinforcing film, a light improvement effect and a significant improvement in luminance can be expected.

On the other hand, through the spinneret including the captive partial distribution plate for the island-in-the-sea yarn manufacturing of the present invention, when the number of islands in the islands (more than 10,000) is manufactured and weaving it into a fabric Even if you do not lose the island even if the ambassador of the sea lions can prevent the phenomenon. As a result, the reverse polarization effect does not occur in the section where the trimming occurs, and thus the optical modulation efficiency can be maintained, and the visibility of the optical modulation object can be improved remarkably since no defect occurs in the luminance-enhanced film. In addition, we can improve the weaving workability because it does not cause the fiber to be broken during the passing of the weaving machine and Radius Heald.

Meanwhile, the sea portion and / or sea portion, which can be used in the present invention, may be any component used as a material of a conventional sea yarn, and preferably, polyethylene naphthalate (PEN), Copolyethylene naphthalate (co-PEN), Polyethylene terephthalate (PET), Polycarbonate (PC), Polycarbonate (PC) Alloy, Polystyrene (PS), Heat Resistant Polystyrene (PS), Polymethylmethacrylate (PMMA), Polybutylene Terephthalate (PBT), Polypropylene (PP), polyethylene (PE), acrylonitrile butadiene styrene (ABS), polyurethane (PU), polyimide (PI), polyvinyl chloride (PVC), styrene acrylonitrile mixture (SAN), ethylene vinyl acetate (EVA), polyamide (PA), polyacetal (POM), phenol, epoxy (EP), urea (UF), melanin (MF), unsaturated polyester (UP), silicone (SI), elastomer and cycloolefin Any one of the polymers may be subphase. However, most preferably, polyethylene biphthalate (PEN) is used as a birefringent island-in-the-sea yarn, and copolyethylene naphthalate and polycarbonate alloy alone or in combination are used as sea portions. The brightness is remarkably improved compared to the birefringent island-in-the-sea yarn made of the material. In particular, when the polycarbonate alloy is used as the sea portion, a birefringent island-in-the-sea yarn having the best optical modulation properties can be produced. In this case, the polycarbonate alloy is preferably polycarbonate. And modified glycol polycyclohexylene dimethyl ene terephthalate (PCTG), and more preferably polycarbonate and modified glycol polycyclohexylene dimethylene terephthalate (PCTG). The use of a polycarbonate alloy consisting of a weight ratio of 85: 15 is effective for brightness enhancement. If polycarbonate is added less than 15%, the viscosity of the polymer necessary for securing radioactivity becomes high, so that the ordinary spinning machine cannot be used. If it exceeds 85¾, the glass transition temperature becomes high, and after the nozzle discharge, the radial tension is increased. There is a problem that it is difficult to secure radioactivity.

Most preferably, the polycarbonate and the modified glycol polycyclonuclear silane dimethylene terephthalate (PCTG) in a weight ratio of 4: 6 to 6: 4 have the best effect on brightness enhancement. For the sea section, it is effective to select a material with substantially the same refractive indices in two axial directions but a large difference in refractive indices in one axial direction. On the other hand, a method of changing an isotropic material to birefringence is commonly known and, for example, when drawn under suitable temperature conditions, the polymer molecules are oriented so that the material becomes birefringent.

After all, the island-in-the-sea yarn produced through the spinneret including the depressor partial plate for sea island yarn manufacturing according to the present invention can be very easily penetrated between the island components, even if the number of island parts is 500 or more. In the central part of the yarn, It does not occur, and most preferably, even when the number of islands is 25,000 subphases, no seam bonding occurs. Therefore, since more than 500 islands can be arranged in one island island, the fineness of the islands can be reduced. Not only is it very advantageous to produce microfiber, but also eluting it can produce more than 500, and most preferably more than 25,000 microfiber in one island island can significantly reduce the production cost. In addition, the island-in-the-sea yarn according to the present invention can be utilized as a photochromic fiber by expressing a specific color according to the sea island ratio and fiber diameter without adding a dye or a compound causing color development due to the excellent light modulation effect. When used in brightness-enhanced film, the light modulation effect of the film can be maximized.

Furthermore, since the number of the drawing parts can be 10000 or more, it is possible to solve the cattle phenomenon occurring in the luminance-enhanced film.

[Form for implementation of invention]

Hereinafter, the present invention will be described in detail with reference to Examples and Experimental Examples. The following Examples and Experimental Examples are merely illustrative of the present invention, and the scope of the present invention is not limited to the following Examples and Experimental Examples.

<82> Polycarbonates and Modified Glycol Polycyclohexylenes

Anisotropic PC alloy having dimethylene terephthalate (PCTG) mixed at 5: 5 as a sea component (nx = 1.57, ny = 1.57, nz = 1.57, melting temperature: 145 ^° C), anisotropic PEN (nx = 1.88, ny = 1.57, nz = l, 57, melting start temperature: 262 ^° C.). In order to manufacture the birefringent island-in-the-sea yarn of FIG. 3A, the same upper portion of the spinneret as shown in FIG. 2 was disposed on the spinneret. There are 1250 islands supply paths inside, and the core diameter is 20mm. In addition, through the spinneret with the spinneret in the bottom of the spinneret having the shape of the discharge port as shown in Figure 5, the spinning temperature is 305 ^° C, the spinning speed is 1500 M / min after spinning, three times stretching A sea island yarn (mono yarn diameter: 65 / m) having a number of island portions of FIG. In FIG. 3A, no conjugation phenomenon was observed. <Comparative Example 1>

As shown in Figure la was carried out in the same manner as in Example 1 except that the spinning seams through a spinneret having one spinning core and 334 islands supply paths formed thereon. FIG. Lb is an electron micrograph of the island-in-the-sea yarn emitted through the spinneret of FIG. Industrial availability

The spinneret for manufacturing island-in-the-sea yarn of the present invention has excellent optical modulation performance without defects and does not cause defects, and therefore, microfibers are used, optical devices such as cameras, mobile phones, LCDs, LEDs, etc. It can be widely used for manufacturing sea island yarns applied to liquid crystal display devices requiring high brightness.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended claims. Is a matter of course,

Claims

[Claims]

[Claim 1]

In the detention part partial plate for island-in-the-sea manufacture which distributes a island component polymer and a sea component polymer,

The depressed partial plate is formed in the center and the core portion to prevent the joining;

A plurality of island component supply units formed radially around the core portion and having a plurality of island component supply paths formed therein; And

And a plurality of sea component supply portions formed along the outer circumference of the island component supply portion and including a plurality of sea component supply passages.

[Claim 2]

The method of claim 1,

Old core part plate for island-in-the-sea manufacturing, characterized in that the core portion is a through hole or a closed hole.

[Claim 3]

The method of claim 1,

The core portion of the seam yarn for the manufacture of islands, characterized in that the cross-section is circular or polygonal in shape.

【Claim 4】.

The method of claim 1,

Longitudinal partial plate for island-in-the-sea yarn production, characterized in that the long axis length of the cross section of the core portion is 10-40 議.

[Claim 5]

The method of claim 1,

The core section of the core portion is 50 to 5200 niirf, characterized in that the depressor part plate for islands manufactured.

[Claim 6]

The method of claim 1,

The core portion inside the demagnetizing portion for manufacturing island islands, characterized in that it does not contain any one or more of the island component supply passage and sea component supply passage therein.

[Claim 7]

According to claim 1,

One island component supply unit and the number of island component supply paths included therein is 300 to 1500 Detainee partial distribution for the island-in-the-sea manufacturing.

[Claim 8]

The method of claim 1,

The plurality of island component supply portion deferred upper plate for manufacturing islands, characterized in that 10 to 100.

【Claim ⁹ 】

The method of claim 1,

The sea component supply part depressor part plate for sea island yarn production, characterized in that formed continuously along the outer periphery of the core portion.

[Claim 10]

The method according to claim 1,

The decontamination part distribution plate for island-in-the-sea yarn manufacturing characterized by the shade which divides a island component supply part by the sea component supply part formed between the said plurality of island component supply parts.

[Claim 11]

The method of claim 1,

Detained part distribution board for manufacturing island islands, characterized in that the number of sea component supply paths included in one sea component supply unit is 3 to 25.

[Claim 12]

The method of claim 1,

The sea component supply part is a demagnetized partial plate for islands manufacturing, characterized in that formed continuously along the outer periphery of the island component supply.

[Claim 13]

In U,

Detained partial distribution plate for island-in-the-sea yarn manufacturing, characterized in that the total number of the island component supply paths included in the plurality of island component supply units is 2000 or more.

[Claim 14]

The method of claim 1,

Detained partial distribution plate for island-in-the-sea yarn manufacturing, characterized in that the total number of island component supply paths formed in the plurality of island component supply units is 10,000 or more.

ί claim 15】

The method of claim 1,

The total number of island component supply paths formed in the plurality of island component supply units is 20000. Detained partial plate for island-in-the-sea yarn production characterized by the above.

[Claim 16]

The method of claim 1,

Detained part plate for island-in-the-sea yarn manufacturing, characterized in that the total number of sea component supply paths formed in said plurality of sea component supply units is 60 ᅳ 2500.

[Claim 17]

The method of claim 1,

And the plurality of island component supply units are surrounded by sea component supply units, respectively.

[Claim 18]

The method of claim 1,

The shape of the island component supply portion fan-shaped, isosceles triangle, isosceles trapezoidal partial plate for islands manufacturing, characterized in that the trapezoid.

[Claim 19]

A spinneret for manufacturing a sea island yarn comprising the depot portion distribution board for the island-in-the-sea yarn manufacture of claim 1. [claim 20]

The method of claim 19,

Is provided on the bottom of the upper portion of the upper plate and the spinneret for manufacturing islands including a lower plate formed with a discharge port for collecting and discharging the polymer passed through the plurality of island component supply unit and the plurality of sea component supply unit.

[Claim 21]

The method of claim 20,

The lower stopper plate is spinnerets for manufacturing islands and yarns, characterized in that at least one passage for guiding the island component polymer passed through the island component supply portion and the sea component polymer passed through the sea component supply portion to the discharge port.

[Claim 22]

The method of claim 21,

The discharge port is a spinneret for producing island-in-the-sea yarn, characterized in that formed in the area where the flow path and the passage intersects.