TW201204888A - Sheath-core compound fiber, false twist textured yarn composed thereof, method for manufacturing the same, and woven knit fabric including the fiber - Google Patents

Abstract

The present invention provides a fiber having excellent stability in spinning process and excellent passing of the fiber in false twist yarn process; and a woven knit fabric blocking a radiation heat from the sun with use of the fiber without losing the texture of the fiber. The present invention provides a sheath-core compound fiber having a center core and a sheath, and the sheath-core compound fiber includes 1 to 3% by mass of titanium dioxide. The core of the sheath-core compound fiber mainly contains a resin having a refractive index A, and the sheath of the sheath-core compound fiber mainly contains a refractive index B. The sheath-core compound fiber wherein the refractive index A and the refractive index B satisfy the following formula (1), and a woven knit fabric including the sheath compound fiber having a fiber area weight of 40 to 400 g/m<SP>2</SP>. |A-B| ≥ 0.01 (1)

Description

201204888^6/^pif VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a ray composite fiber which blocks radiant heat from the sun and a woven knit fabric containing the same. The present application claims priority based on Japanese Patent Application No. 2010-131416, filed on Jan. [Prior Art] Conventionally, as a fiber used for a curtain or a garment for the purpose of light-shielding, it is known that a white pigment such as titanium oxide, talc or barium sulfate or inorganic fine particles such as carbon black or a powder is dispersed. Fiber obtained by the method in the fiber (Patent Document 1 and Patent Document 2). Further, as a fabric for white camouflage use in snow, ultraviolet light reflection including a core yarn having a polyfilament yarn as a yarn and a multifilament as a core yarn is known. White cloth (Patent Document 3). On the other hand, the technology of core-sheath composite fibers is well known. For example, it is known to use a technique of using a core-sheath composite fiber as follows to produce a fiber having abrasion resistance. This fiber is a core-sheath composite fiber in which the sheath portion is a thermoplastic polymer having a peak of '2 〇〇 or more and the core portion is a polypropylene nucleating agent containing a crystal nucleating agent (Patent Document 4). However, in the methods of Patent Document 1 and Patent Document 2, in order to sufficiently radiate heat from the sun, it is necessary to make a large amount of inorganic fine particles in the fiber. As a result, there is a problem that not only the stability of the yarn making step is deteriorated but also the texture of the product is significantly impaired. In addition, the polyethylene fiber of the patent document 3 has the effect of blocking the light radiation of the 201204888 mpif, but there is a problem that the strength of the yarn is low. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open No. Hei 9-228188 (Patent Document 3) Japanese Patent Laid-Open No. Hei 9-228188 [Patent Document 4] Japanese Patent No. 3452291 [Invention] The object of the present invention is to provide a fiber which does not impair the texture of the fiber (effectively shields or absorbs the radiant heat of the sun (i.e., infrared light), and A woven fabric of the fiber is used. Further, another object of the present invention is to improve the stability of the spinning step of the fiber and the passability of the false twisting step. The main object of the present invention is to provide a core-sheath composite fiber comprising a core. The sheath of the sheath is =, and the core-sheath composite fiber contains TiO 2 wt% 〜3 wt% (weight percent). The core has a resin having a refractive index A as a main component, and the sheath portion has a resin having a refractive index B as a main component. , a and B satisfy the following formula (丨). |AB|^0.01 (1) Further, the main object of the present invention is a core-type composite fiber comprising a core and a sheath (tetra) fiber containing titanium oxide i wt% ~3 =1 part with thermal conductivity (W/mK) is a resin of c as a main component, and a resin having a thermal conductivity (W/mK) of D is a main component, and [and d satisfy the following formula (2). 1C to DI20.01... (2 201204888. JO /H^tpif Further, the main idea of the present invention is to provide a core-sheath composite fiber satisfying the following formula (5). 10SCMVRS40 (5) wherein 'CMVR is a main component of the core portion and the sheath portion The resin having a higher refining point in the resin has a melting point higher than 25. The MVR of the resin having a lower melting point at a temperature of 〇 (cm3/l〇min). Further, the present invention is directed to a false twisted textured yarn (false The manufacturing method of the twist textured yarn is 'fake the core-sheath composite fiber satisfying the above formula (5) under the conditions of the following (6) to (8). (TL-20) (TL + 30) ) (6) KS31000..............................(7) 〇- 1 cN/dtex^TE^0.2cN/dtex (8) where TL represents the melting point of the resin having a lower melting point in the resin of the main component of the core and the crotch portion, ττ represents the false twist temperature, and K represents The false twist factor and TE indicate the false twist tension. Moreover, the false twist factor is the fiber processed by the false twist. The coefficient expressed by the relationship between the fineness and the number of false turns, and is expressed by the following formula: False twist coefficient = false twist (t/m) X (fiber fineness (dtex) + 1 〇 X 9) 1 / 2 [Effect of the Invention] The core-sheath composite fiber of the present invention can block the radiant heat from the sun without impairing the texture of the fiber. That is, infrared light can be effectively shielded or absorbed. Further, when the woven fabric using the fiber is used as a curtain or a garment, it can effectively shield or absorb radiant heat from the sun, i.e., infrared light. 6 201204888 The external light ^Faller composite fiber can effectively shield or absorb the purple clothes. # m and use the woven fabric of the fiber to effectively absorb or absorb the light and visible light when making curtains or clothes.

In the day, the invented core composite fiber has friction resistance (four) properties. And when using Qian Wei's woven fabric to make sportswear, even if it is subjected to frictional heat caused by sliding or falling, the weaving is difficult to melt. 0 Further, the core-viewing fiber of the present invention can be stably obtained in a material and a step, and the pass-through property of the fiber is also good. [Embodiment] Embodiments of the present invention will be described in detail below. <The core has a resin having a refractive index A as a main component, and a resin having a refractive index B as a main component, and A&B satisfies the following formula (1) &gt;

In the loyal composite fiber of the present invention, it is necessary that the core portion contains a resin composition composed of a resin having a refractive index A as a main component, and the sheath portion contains a resin composition formed of a resin having a refractive index B as a main component. And A and B satisfy the following formula (1). |A_B| refers to the absolute value of the difference of A||B (hereinafter, also referred to as refractive index difference). |Α-Β|^〇.〇1 (1) By satisfying the formula (1), the core-sheath composite fiber can be free of excess titanium oxide, so that the radiant heat from the sun can be blocked without impairing the texture of the fiber. That is, infrared light can be effectively shielded or absorbed. "As one of the reasons, it can be considered that light is reflected at the interface of the core sheath. For example, the resin forming the core portion and/or the sheath portion is a polyethylene resin, a nylon 6 resin, a polyg resin, a polypropylene resin, or the like. 201204888. Jo /H^pif Table 2, 26, pp. 218~219, on the 218th to 219th of the Fibers of the Fiber Materials, November 30, 968. The fiber axis of the dimension is the refractive index in the right angle direction. Fiber polyethylene fiber 1.512~1.52〇, ^ has been loaded. Fiber 1.515, polyethylene terephthalate fiber, nylon 6 <thermal conductivity (W / m 〇 2 1,781

The thermal conductivity (W/mK) is based on the thermal conductivity (W/mK), which is the main component, and satisfies the following formula (2) &gt; % as the main component, and CD is the main component of D, and c and The resin forming the core and/or the portion is a polyethylene resin, a polypropylene resin, a polyester resin, a polyvinyl chloride resin or the like. Table 1.28 t on page 107 of the Fiber Facility Raw Materials Fiber Society (issued on May 30, 1968), thermal conductivity at 5 °C for various polymer materials [lO'cal.deg'cm - 'secT1] is described as follows. Polyethylene with a density of 0.918 g.cixT3 7. 〇~97, isot-propylene 5.2, polyethylene terephthalate 52 to 68, polyvinyl chloride 4.0 If the unit of the above thermal conductivity value When converted to (W/mK), it becomes the following value. Polyethylene 〇·29~0.41 with a density of 0.918 g*cm·3, polypropylene in the same row 8 201204888 J5/material pif 0.22, poly(ethylene dibenzoate) 22~〇28, polyvinyl chloride ο 17 &lt; The core composite fiber contains titanium oxide (1 wt% to 3 wt%). In the core-sheath composite fiber of the present invention, it is necessary to make the core-sheath composite fiber contain 1 wt% to 3 wt% of titanium oxide. When the titanium oxide is 3 wt% or less, the effect of blocking the radiant heat is too large, and the viscosity increase by the addition of the titanium oxide is not so large, so that the yarn-making property is not bad. On the other hand, when the titania is 1 wt% or more, it has an effect of blocking the radiant heat of the intended sun. In the case where the towel is formulated with titanium dioxide, the yarn path guide is sometimes worn in the step after the yarn making. Therefore, titanium dioxide is preferably formulated in the core. Further, when the resin of the core portion and the sheath portion contains titanium oxide, the effect of blocking the radiant heat of the sun is most preferably obtained, which is preferable. The titanium dioxide to be used is not limited as long as it is used for producing synthetic fibers or the like. However, in terms of dispersibility, it is preferred to use anatase type titanium dioxide. Further, it is preferred that the core-sheath composite fiber contains 12% by weight to 2% by weight of titanium dioxide. Further, the average particle diameter of the primary particles of titanium dioxide is preferably in the range of 〇·1 μηη to 0.3 μηη in consideration of the stability in the spinning step. Examples of the oxidizing agent which can be easily obtained are, for example, titanium oxide ADd manufactured by Kronos Corporation. &lt; R value is 24 or less&gt; 3 The core-sheath composite fiber of the present invention is preferably formed to have a gas permeability of 24 〇cmW/s to 350 cmW/s, and a basis weight of 22 〇 2 〇〇 2 〇〇 201204888 When the woven fabric of g/m2 has an R value of 24 or less. The R value is the temperature rise value (ΐ) measured by the mask. By using an R value of 2 4 to "ς", the test is suitably used in an environment where weaving is used. The r value is more preferably, and the comfort is preferably 22 or less. In the following, the standard unit weight of the weaving fabric for the fabric per unit weight of 220 g/m2 to 3〇〇g/m2, the value of the ventilator is cm3/cm2/s to 350 cm3/cm2/s. The standard gasness of the above-mentioned unit surface two ^ θ 24 () woven fabric. When Comparative Example 1, Comparative Example 2, and Comparative Example 5 were observed, the R value decreased as the content of titanium dioxide in the fiber decreased by 2 wt% in the polyester fiber. t%) Naturally, according to the case where the main component of the core is a polyethylene resin, the sheath is divided into a polyester resin, and the volume ratio of the core to the sheath is changed, '5, along with the content of titanium dioxide in the fiber (wt〇) /〇) Since 2 correction 0 I] R value rises. ° Decrease, difference 1 or heat conduction. The reason is that ag is the influence of the difference in refractive index between the core and the resin. &lt;Infrared transmittance is 32% or less&gt; The core-sheath composite fiber of the present invention 7 preferably has an infrared ray penetration below when a woven fabric having a basis weight of 220 g/m to 300 g/m 2 is formed. By making the infrared ray transmittance 32% or less, the radiant heat of the sun, that is, infrared light can be effectively shielded or absorbed. The infrared transmittance is more preferably 3 Å or less, and still more preferably 27% or less. Further, in the same manner as in the case of the above R value, according to Examples 1 to 5, 201204888 J»/44pif as the content (4) (wt%) of the titanium oxide in the fiber was decreased from 2 (10), the transmittance increased. It is preferable to satisfy both the range of the upper value and the range of the infrared transmittance. &lt;Principal component of the resin composition of the core&gt; The core-sheath composite fiber of the present invention is preferably a core-lipid composition mainly composed of a polyolefin. The polyolefin of the shape and the part is a polyethylene resin, a polypropylene resin, or the like. When a polyethylene resin having a high thermal conductivity is blended in the core portion, and a polyester resin having a lower thermal conductivity than the polyethylene resin is blended in the sheath portion, the difference in thermal conductivity is a positive number and the difference in thermal conductivity is large. Therefore, it is considered that heat is more likely to be transmitted in the longitudinal direction of the fiber than in the radial direction of the fiber, and heat becomes difficult to be transported in the thickness direction of the woven fabric. The polyethylene resin to be used is not particularly limited as long as it has a known molecular weight and density. The polyethylene resin which can be easily obtained is, for example, Kernel KF283, KF380 or the like manufactured by Japan Polyethylene Co., Ltd. When a polypropylene resin having a low thermal conductivity is blended in a core portion, and a nylon 6 resin having a higher thermal conductivity than a polypropylene resin is blended in the sheath portion, the difference in thermal conductivity is a negative number, and the difference in conductivity is large. Therefore, it is considered that heat is hard to be transported in the radial direction of the fiber, and heat is easily transmitted in the longitudinal direction of the fiber. The polypropylene to be used is not particularly limited as long as it has a known fiber grade molecular weight and density. The polypropylene resin which can be easily obtained is, for example, Novatec SA01, SA03 manufactured by Japan Polypropylene Co., Ltd., and the like. Further, in order to impart stretchability, bulkiness, and the like to the woven fabric, the core-sheath composite fiber of the present invention can be subjected to false twist processing as needed. In the step of the false twist processing 11 201204888.f JO /^plt, the main component of the resin composition of the core is preferably a polyolefin resin having a melting point in the range of 130 ° C to 180 ° C. When the polyolefin resin has a melting point of 130. (3 or more, the generation of white powder in the false twisting step can be reduced. When the melting point is l8〇〇c or less, the frictional melt resistance of the woven fabric of the present invention can be improved. &lt;The main component of the resin composition of the sheath portion &gt; The core-sheath composite fiber of the present invention preferably has a resin composition of a sheath portion mainly composed of a polyester resin. The polyester resin forming the sheath portion is a known fiber grade polyethylene terephthalate or a polypair. The butyl phthalate or the like is preferably polyethylene terephthalate or copolymerized polyethylene terephthalate. Further, it is more preferable that the polyethylene terephthalate satisfies the following formula ( 3) and the poly(p-bismuthic acid) of the formula (4). When the following formulas (3) and (4) are satisfied, the dye can be dyed with a cationic dye, and the common dye can be obtained. 〇.8^s^5. .. (3) 2^a^l5... (4) The heart's 's and a' are respectively polyethylene terephthalate. %) and the copolymerization ratio (mol%) of the aliphatic group 2 of carbon number 2^. When the iron is 4 〇.8 or more, the cationic dye is unique to the compound: 5 -% or less , “When ^l rises. jlI twist, so that the melt viscosity of the polymer during polymerization is not =, the fruit 'fiber strength is not reduced. The metal salt of the metal bismuth dicarboxylic acid is 5_ surely benzoic acid ! ^ 鲤 salt, sodium salt, potassium salt, gamma salt, hammer salt) and so on. Male outsider 12 201204888 38744pif It is necessary to use an alkaline earth salt such as a magnesium salt or a calcium salt of these compounds. Among them, it is preferred to use a sodium salt of 5-sulfoisophthalic acid. When a is 2 mol% or more, the dyeability under normal pressure dyeing can be improved. When a is 15 m〇l% or less, the glass transition of the polyester resin • temperature or melting point can be set to an appropriate range. As a result, a fiber product having the necessary force characteristics, firmness, heat resistance and the like can be obtained. The aliphatic dicarboxylic acid having 2 to 8 carbon atoms is succinic acid, glutaric acid, adipic acid (ad_icic acid), azelaic acid (suberic acid), azelaic acid (can), etc. Among them, adipic acid is preferred. When adipic acid is used, appropriate confusion can be generated in the amorphous structure t of the fiber to improve the dyeability. &lt;The volume ratio of the core to the sheath is 1/2 to 1/ 1〇&gt; The volume ratio of the core portion to the sheath portion in the core-sheath composite fiber of the present invention is 1/2 to 1/1 〇. When the volume ratio of the core sheath portion exceeds 1/2, the sheath is caused. The portion is broken to expose the core portion to reduce the yarn-making stability. When the volume ratio of the core portion is less than 1/10 a, the heat shielding property of the fiber is deteriorated. In terms of yarn stability and heat shielding, The volume of the core and the portion is preferably in the range of 1/4 to 1/8. &lt; Satisfy 10SCMVRS40... (5)> CMVR is higher in the resin than the main component of the core and the sheath. The melting point of the resin of the melting point is higher than the MVR of the resin with a lower melting point at a temperature of 25 。. The CMVR is preferably 1 〇 SCMVRg40. When the CMVR is 1 〇 or more 2 ', the _ composite fiber can be made (4) Qualitative It is good. Although the CMVR is less than 40, the redness of the resin in the core of the core is low. 201204888 J5/^pif: sheath. The resin of the main component of P can reduce the occurrence of false twisting. Further, the white powder is a substance which adheres to the spinner:), the yarn guide, etc. during the false twist processing. When white powder is produced, it will reduce the characteristics of the hybrid composite fiber, which is the effect of the heat of the sun, and the performance of the fabric, which also reduces the taste of the weave. In addition, the generation of white powder reduces the passability of the false twist processing and the step passability in the manufacture of the fabric or the knitted fabric. The reason why the white powder can be reduced when the CMVR is 40 or less is not clear, but it can be presumed as follows. The resin composition of the sheath structure is about to be ejected from the spinning nozzle to the area immediately after the exit, and the area of the screen is covered with a velvet scum that covers the molten core (10). The low molecular weight # component of the main component resin is incorporated into the case. In the false twisting process, the fibers are deformed to expose a small amount of low molecular weight components which are introduced into the human face to form a white powder. When the CMVR is 40 or less, the low molecular weight component of the resin of the main component of the core portion can be made difficult to enter into the composition. &lt;The cross-sectional shape in a direction perpendicular to the fiber axis is a triangle, a square, a hollow or a 丫 type&gt; The cross-sectional shape of the core-composite fiber of the present invention in a direction perpendicular to the fiber axis is preferably a dihedral, a tetragonal, a hollow or a γ type. When the cross-sectional shape is a polygon such as a dihedral, a quadrangular, a hollow or a Y-shape, the reflectance of sunlight can be increased, and the effect of blocking the radiant heat of the sun can be improved. Further, when the cross-sectional shape is a hollow cross section, since there is an air layer having a low thermal conductivity, the effect of blocking the radiant heat of the sun can be improved by 201204888 j〇 /npif. &lt;Single fiber fineness is less than or equal to 3 dtex&gt; The single fiber fineness of the core-sheath composite fiber of the present invention is preferably 3 dtex or less, more preferably 2 dtex or less, still more preferably 1 dtex or less. When the single fiber fineness is so small, the surface area of the fiber can be increased, and the reflection portion of the sunlight can be increased, so that the effect of blocking the radiant heat of the sun can be enhanced. &lt;Method for Producing Core-sheath Composite Fiber&gt; The core-sheath composite fiber of the present invention can be produced by a known yarn-forming method of a core-sheath composite fiber. Further, the spinning hole for the spinning of the (IV) composite fiber has a larger diameter than the spinning hole of the spinning nozzle in the usual spinning, and is preferably 0.3 μm to 9.5. - In addition, the method of the (four) method of spinning (four) can be carried out by winding the unstretched yarn after stretching or by any method of stretching without stretching the undrawn yarn. &lt; false twist processing yarn comprising core-sheath composite fiber&gt; The core-sheath composite fiber of the present invention is preferably a false twisted textured yarn. When the yarn is processed, the cross-sectional shape in the direction perpendicular to the fiber axis is two solar-reflective (four) high, and the field is increased. _^= &lt; Manufacturing of false-twisted and processed yarns including the core-sheath composite fiber includes the core-sheath composite of the present invention. The pseudo method of the fiber> The 捻 condition is preferably such that the following formulas (6) to (8) are satisfied. ", σ χ 假 fake (TL-20) (TL + 3 〇) KS31000........ (6) (7) 15 201204888 i»/44pif 〇. 1 cN/dtex^ TE ^ 0.2 cN /dtex...(8) where 'the melting point of the resin having a lower melting point in the resin of the main component of the TL and the part of the TL, ττ indicates the false twist temperature, κ indicates the false twist coefficient, and ΤΕ indicates the false twist tension. Furthermore, the false twist factor is a coefficient expressed by the relationship between the fineness of the fiber subjected to the false twist processing and the number of false turns, and is expressed by the following formula: False twist coefficient = false twist number (t/m) Χ ( Fiber denier (dtex)—丨〇χ 9) I/2 For example, in the case where the main component of the sheath is polyethylene terephthalate resin and the core component of the core is polypropylene resin, the false twist temperature Preferably, it is 147 〇C to 197 〇 C. When the coefficient of the rice cooker is 31,000 or less, the crimp unevenness or the end breakage can be suppressed, so that it is preferable. Further, when the false twisting force is 〇. When 丨cN/dtex or more, it is possible to suppress curling or breakage, and it is preferable. When the false twisting force is a2eN/dtex or less, the raising or breaking of the false twisted textured yarn can be suppressed, which is preferable. A woven fabric having an early area weight of 4 〇g/m 2 to 400 g/m 2 / 曰 The sheath composite fiber of the present invention can be used as a constitutive yarn of a woven fabric = woven fabric, braided structure of the woven fabric of the present invention The weaving method, the weaving machine, the knitting machine, and the like are not particularly limited. The woven fabric of the present invention preferably has an early area weight of 15 G g/m 2 to 働 2 2. When the unit surface = 150 g/m 2 When the above is easy, the radiant heat is easily blocked: the weight of the bit area is set to copper (10). When the thickness is not increased, it is difficult to make the composite fiber as the veil and/or the inner yarn (4) into a double-sided woven 201204888 J8744pif ( The woven fabric of the reversible knitted fabric> The structure of the woven fabric of the present invention is not specifically composed of the core spectacles of the present invention, and the second is considered to be only the core conjugated fiber of the present invention, and the effective blending length is long. Tissue, Kelin double-faced fabric = special composite fiber of fiber as silk yarn or county (four) fabric: The core of the invention is used in the double-faced fabric, one side of the fabric is composed of fibers, and the other side is made of other fibers. Recovering the Wei or special length of his fiber. The core-sheath composite fiber _ constituting surface has not only resistance; live = clothes made of double-faced fabric, etc., depending on the season, ring = again, other fibers used in the above-mentioned other faces, such as natural fibers such as 绢, 绢, etc. Recycled fiber, bismuth, etc., and bisexene fiber, and a single fiber constituting each fiber: The cross-sectional shape of the fiber axis in the direction perpendicular to the fiber is not particularly limited.

If the texture and texture of the woven fabric are obtained, the cross-sectional shape can be selected from the daisy-shaped, flat and 截面-shaped cross-sectional shapes. J <crepe containing core-sheath composite fiber> Further, the woven fabric may also be a crepe yarn containing the core-sheath composite fiber of the present invention. The twisted yarn is obtained by twisting the core-sheath composite fiber of the present invention, combining the core-sheath composite fibers of the present invention, or combining the core-fiber composite fiber of the present invention with other fibers. . For example, when the core-composite fiber of the present invention is combined with other fibers, it is possible to give a sensation (for example, a gloss feeling, a cooling feeling, a wetting to the fiber, and a twisting). In addition, the twisting direction and the number of twists of the yarn are not particularly limited / can be elastic. And the appearance is decided.艮 艮 艮 再 再 再 再 再 再 再 再 再 再 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 其他 。 。 。 。 。 。 Further, the cross-sectional shape of the single fiber constituting each fiber in the fiber side (four) cross section is not limited, and the cross-sectional shape may be a cross-sectional shape such as a daisy-type, a round shape, a flat shape, or a γ-shape. Choose among. [Examples] Hereinafter, the present invention will be specifically described by way of examples. Further, each evaluation item was measured by the following method. (R value) The woven fabric of the fiber was measured by the heat absorbing measurement method of the Japan Chemical Fiber Inspection Association, and the temperature rise value after 15 minutes from the start was measured as the R value. The method of measuring the heat shielding property is as follows. The sample was held on about 5 mm of the black drawing paper, the light was irradiated from the side of the sample, and the temperature in the center of the drawing paper was measured with a thermocouple over time.

Use lamp: Iwasaki Electric Co., Ltd. Eye light (eye lamP) (light spot) PRS 100 V500 W 201204888 /^4pif

Irradiation distance: 50 cm Irradiation time: 15 minutes Laboratory temperature: 20 ± 2 ° C (infrared transmittance, visible light transmittance, and ultraviolet transmittance) Using a spectrophotometer (U-3400 manufactured by Hitachi) The following operations (1) to (6) were sequentially performed, and the respective transmittances were measured. (1) A sample of a woven fabric. (2) The transmittance (%) (hereinafter referred to as Tg) in the absence of the sample was measured every 5 nm in the range of 250 nm to 2000 nm. (3) The sample was mounted on a spectrophotometer, and the transmittance (%) (hereinafter referred to as Ts) in the presence of the sample was measured every 5 nm in the range of 250 nm to 2000 nm. (4) The Ts is corrected by the following equation every 5 nm in the range of 250 nm to 2000 nm, and the corrected transmittance (〇/&gt;) (hereinafter referred to as T) is calculated. T= (Ts/Tg) χΙΟΟ (5) Set the infrared region, visible light region, and ultraviolet region to the following wavelength range. The infrared region is 700 nm to 2000 nm, the visible light region is 400 nm to 700 nm, and the ultraviolet region is 250 nm to 400 nm. (6) The arithmetic mean of T is calculated for each region of (5) as the infrared transmittance (%). Visible light transmittance (%) and ultraviolet transmittance (%). (Intrinsic viscosity) 0.25 g of the polymer was pulverized, dissolved in 50 ml of a mixed solvent of benzene/tetrachloroethane (50/50) 201204888f, and the temperature was adjusted to 25 ° C, using an automatic viscometer (manufactured by SUN Electronic Industries). The AVL-4 type was measured. Furthermore, the calculation formula is as follows. [η] = [ (1 + 1. 〇 4ηδρ) 1/2-1] / 0.26 (melting point) Using a differential scanning calorimeter (DSC220 manufactured by Seiko Instruments Co., Ltd.), the temperature is raised at a temperature of 10 °C/min. Determination. (Melt flow rate (MFR)) is determined according to 118 〖6758 (230. (:, 2.16 let § load). (Melt volume rate (MVR)) according to ISO 1133 (2.16kg load) at 280 ° C The measurement was carried out. (The amount of white powder in the false twisting step) Using the IVF338 false twisting machine manufactured by Ishikawa Seisakusho Co., Ltd., the core-sheath composite fiber was subjected to false twist processing, and white powder was produced 1 hour or more after the start of the false twisting process and less than 2 hours. The case is considered to be c, 2 hours or more and less than 8 hours of white powder is considered to be B~C, 8 hours or more and less than 16 hours, no white powder is produced. B is considered as B. Even if it is more than 16 hours, no white powder is produced. The case is considered as A. Furthermore, the false-twist conditions in the examples and comparative examples are as long as there is no special s-loading, then the number of false twists is 3〇〇〇t/m (in the case of an extended yarn of 84 dtex)捻The coefficient is 27500), the false twist temperature is 17 (TC, the false twist speed is 150 m/mm, and the false twist tension is 〇15 cN/dtex. (Air permeability) in an environment variable room with 20 C and relative humidity of 65%. According to JIS L 1096 Ventilation A method (Frazier type method), the use of pass 20 201204888 38744pif Air permeability tester FX3300 (manufactured by TEXTEST Co., Ltd.) Air permeability (cm3/cm2/s). (Friction-resistant meltability) Rotor-type frictional melting test according to JIS L 1056 (Method B) (load is l〇) The measurement was carried out in kg and 3 seconds of compression. The result was that the state in which the smelting trace was not produced was regarded as A, and the melting trace was generated, but the state of the cut was regarded as B, and the cut state was regarded as c. Crimping characteristics> The measurement was carried out in accordance with JIS L-1013. (Example 1) A polyethylene resin (PE) (manufactured by Sakamoto Polyethylene Co., Ltd., MFR 4 g/10 min) was used as a core. Ethylene diacetate (ρΕτ) (manufactured by Mitsubishi Rayon, intrinsic viscosity [η] 〇 676, melting point 256 ° C) is added with 2 wt% of titanium dioxide (anatase type, average particle size of primary particles is 0.3 μm PET as the sheath. The core-sheath composite ratio (volume ratio) is set to 1/6, and a spinning device with a core-sheath composite nozzle having an aperture of 〇4 mm and a number of holes of 24 is provided at a spinning temperature of 290 C. Spinning at a spinning speed of 1800 m/min to obtain undrawn yarns with an extension speed of 600 m/min and an extension temperature of 85 °c, heat setting μ degree 150 C, maximum stretching ratio 〇·68 times, and extending the obtained unstretched yarn to make an extended yarn of 84 dtex/24 filament. The four obtained extended yarns are conjugated. A denier of about 330 dtex is formed. A woven fabric of rib structure was produced using a 16 gauge (root/2.54 cm) flat knitting machine. The R value, infrared transmittance (%), visible light penetration 丨r·; 21 201204888 J8/^4pif rate (/°), ultraviolet transmittance (%) and air permeability of the obtained knitted fabric are shown in Table 1. in. (Example 2 to Example 7, Comparative Example 3, and Comparative Example 4) In the same manner as in Example i except that the core-sheath composite ratio (volume ratio) and the resin of the main component of the core were changed as in Table 1. The yarn and the braid of the core composite fiber are formed. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained knitted fabric are shown in Table 1. (Comparative Example 1) A resin composition in which 2 wt% of titanium dioxide was added to PET (manufactured by Mitsubishi Rayon Co., Ltd., intrinsic viscosity [η] 〇676, melting point: 256 ° C), and a pore diameter of 0 3 mm and a number of pores were used. The spinning device of the spun nozzle of 24 is at a spinning temperature of 290. (: Spinning at a spinning speed of 18 〇〇m/min to obtain undrawn yarn. Extension speed 600 m/min, extension temperature 85 ° C, heat setting temperature 150 C, maximum stretching ratio 0 68 times The resulting undrawn yarn was stretched to make an extended yarn of 84 dtex/24 filament. The four obtained stretch yarns were conjugated to form a fineness of about 33 〇 dtex. Using 16 stitches (root/2.54 cm) The flat knitting machine is made into a woven fabric of rib structure. The R value, infrared transmittance (%), visible light transmittance (8), preparation, external line penetration (%) and air permeability of the fabric are shown in the table. (Comparative Example 2, Comparative Example 5) The value of the knitted fabric obtained by the extension (4) and the knitted fabric 1 and the infrared transmittance were obtained in the same manner as in Example 1 except that the amount of the titanium dioxide added was changed as in Table 1. %), visible light transmittance (%), ultraviolet light penetration 22 201204888. The jo rate (%) and the air permeability are shown in Table 1. (Example 8) A core-twist composite nozzle with a hole diameter of 0.3 mm and a number of holes of 36 was used. In addition to the extension yarn of 33 dtex/36 filament, it is obtained in the same manner as in the example i. An extended yarn of fibers. Using the extended yarn, a ripple taffeta structure of 165/2.54 cm, latitude 154/2.54 cm (with a fabric coverage factor of 1832) was prepared. Fabric. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%) and air permeability of the obtained fabric are shown in the table. Is the value obtained by the following formula: Fabric Coverage Value (DWp) 1/2xMWp+ (DWf) 1/2xMWf where 'DWp is the warp total denier (dtex), MWp is the warp weave density (root/2.54 cm), DWf is The weft total denier (dtex) and MWf are the weft yarn weave density (root/2.54 cm). (Comparative Example 6) Using a light 33 dtex/36 filament atmospheric cation dyeable yarn manufactured by Mitsubishi Rayon Co., Ltd. 17 〇 254 / 254 • cm, latitude 161 / 2.54 cm (fabric cover factor value of 1901) corrugated taffeta fabric. The R value of the resulting fabric, infrared transmittance (%), visible light wear Permeability (%), UV transmittance (%), and air permeability are not shown in Table 1. (Example 9) Using a hole diameter of 0.5 mm A core-sheath composite spun yarn having a number of holes of 48 was obtained as a stretch yarn of 167 dtex/48 filament, and a stretch yarn of the core-sheath composite fiber of the present invention was obtained in the same manner as in Example 1. The core-sheath composite fiber invented by Lacy 4 is used as a 30 ton/2.54 cm latitude 30/2.54 cm for the 30 t/m plied yarn (the fabric cover factor CF value). It is tarpauiin of the material of the flat material of the 1473). The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained fabric are shown in Table 1. (Comparative Example 7) A semi-dull 167 dtex/48 filament polyester multifilament manufactured by Mitsubishi Rayon Co., Ltd. was used as a strand of 30 t/m yarn. A waterproof base fabric for a flat tissue material of 27 pieces/2.54 cm, latitude 32 pieces/2.54 cm (fabric cover factor CF value 1525). The scale value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained fabric are shown in Table 1. (Example 10) An extended yarn of the core-sheath composite fiber of the present invention was obtained in the same manner as in Example 9. A double jersey knitting machine with a 22-pin number (root/2.54 cm) is used to interlace the 167 dtex/48 filament S-direction false twisted yarn of the present invention and the z-direction false twist. The processed yarn made of the yarn is made of 丨: 2 using the same interlaced processed yarn as the yam and acrylic yam i /5 2 (manufactured by Mitsubishi Rayon) to make 2x2 deer embossing Tissue weave. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained knitted fabric are shown in 1. 24 201204888, wt -r-rpll (Comparative Example 8) Using a semi-matte 167 dtex/48 filament polyfilament multifilament yarn manufactured by Mitsubishi Rayon Co., Ltd., to the false twisted textured yarn and z to the false twisted textured yarn. A knitted fabric was produced in the same manner as in Example 10 except that the processed yarn of the core-sheath composite fiber of the present invention was replaced. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained knitted fabric are shown in the Table. (Examples 11 to 24) In the same manner as in Example 1, except that the resin of the main component of the core was changed as in Table 2, the stretched yarn of the core-sheath composite fiber and the woven fabric were produced. The R value, the infrared ray transmittance (%), the visible light transmittance (%), the ultraviolet ray transmittance (%), the air permeability and the frictional resistance of the obtained woven fabric, and the amount of white powder in the false twisting step are shown in In Table 2. (Example 25) An extended yarn of a core-sheath composite fiber and a knitted fabric were produced in the same manner as in Example 11 except that the cross-sectional shape in the direction perpendicular to the fiber axis was changed to a triangle. R value, infrared transmittance (°/〇), visible light transmittance (%), ultraviolet transmittance (%), air permeability and frictional melting resistance of the obtained knitted fabric, and amount of white powder in the false twisting step In the same manner as in Example 11, except that the stretched yarn was set to 84 dtex/48 filament, the stretched yarn and the knitted fabric of the core-sheath composite fiber were produced in the same manner as in Example 11. R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), air permeability, and friction resistance of the obtained knitted fabric in the melting and false twisting steps The amount of white powder is shown in Table 3. (Example 27) In Example 11, the stretched yarn was further used as a false twisted textured yarn. The dimensional permeability (v), visible light transmittance (%), ultraviolet light transmittance = air permeability and friction resistance melting, spinning stability, and false twisting step powder amount of the obtained knitted fabric are shown in Table 3. (Example 28) In Example 26, a woven fabric of the false twisted textured yarn was produced by further using the stretched yarn as a false twisted textured yarn. The scale value of the obtained braid, the infrared transmittance (%), the visible light transmittance (%), the ultraviolet transmittance (%), the air permeability and the frictional melt resistance, and the amount of white powder in the false twisting step are shown in Table 3 (Example 29 to Example 34) The IVF338 false twisting machine manufactured by Ishikawa Seisakusho Co., Ltd. was changed as shown in Table 4 under the conditions of a false twist speed of 150 m/min and a false twist tension of 0.15 cN/dtex. Temperature and false twist (t/m) were subjected to false twisting of the extended yarn of Example 12. The measurement results of the amount of white powder in the false twisting step and the crimping ratio of the false twisted processed yarn are shown in Table 4. (Example 35 to Example 4〇) Using the IVF338 false twisting machine manufactured by Ishikawa Seisakusho Co., Ltd., the false twist temperature and the false value were changed as shown in Table 4 under the conditions of a false twist speed of 150 m/min and a false twist tension of 0.15 cN/dtex. The number of turns (t/m) was subjected to false twisting of the stretched yarn of Example 16. The measurement results of the amount of white powder in the false twisting step and the crimping ratio of the false twisted processed yarn are shown in Table 4. 26 201204888

Ju inch inch οοε Comparative example 8 SD-PE 单独 individual spinning 0.35 2x2 deer point embossing 376 IQ 32.0 22.4 fO w-ί &lt;S ΚΓ» ί 2 S s FD-PET OO 2x2 deer point embossing &lt;N 〇〇ΓΟ 22.8 25.3 21.0 ON Comparative Example 7 Separate spinning of SD-PE 0.3 0.35 1 Flat fabric 205 35.2 37.4 33.4 On K CS Example 9 S-inch FD-PET OO 〇〇ο 24.3 29.5 24.5 Comparative Example 6 Β-ΡΕΤ Separate spinning 0.05: corrugated taffeta 36.1 40.4 38.7 15.8 329 Example 8 S rj- FD-PET OO corrugated taffeta 25.8 31.9 26.4 〇 \ 335 Comparative example 5 Β-ΡΕΤ Separate spinning • 0.05 rib 1 227 27.5 38.8 wS 247 Comparative Example 4 ω CU B-PET OO 0.05 rib v〇&lt;N 26.1 36.1 36.1 18.0 270 Comparative Example 3 UJ s inch SD-PHT s rib 227 26.5 36.9 5 10.5 279 Comparative Example 2 SD-PE T Separate spinning 1 0.35 \Ti οι 26.3 35.6 31.8 WJ KTi &lt;N Comparative Example 1 FD-PET | Separate spinning 1 o Rib 245 24.7 33.9 26.7 r» cs 279 Example 7 §: &lt;NV) &lt;N 〇 〇FD-PET OO 〇&gt; rib 228 23.2 30.6 23.1 ΙΛΙ — 264 Example 6 a. CU &lt;N ΙΛ&gt;&lt;Ν 00 FD-PET OO Rosie i 248 23.2 29.9 23.4 o 253 Example 5 U cu Tj- s FD-PET 1/10 σ\ rib (N 24.0 31.3 24.3 OO pair ' 259 Example 4 ω no s FD -PET Ξ rib 245 21.3 24.9 23.7 sq 263 Example 3 UJ ss FD-PET 2 rib 243 21.7 26.0 24.8 〇270 Example 2 tu cu ss FD-PET OO OO rib 242 30.2 23.7 卜 对 ' 256 δ UQ 0. ss FD-PET OO rib 246 23.7 i 23.3 rn — 258 The melting point of the resin of the resin core component of this component (°c) The MFR of the resin of the core component (g/10 min) s Forget the date Φ § Both w The resin core of the sheath component The volume ratio of titanium dioxide to the sheath (Wt0/o) of the fabric of the woven fabric. The basis weight of the fabric (g/m2) R value (. 〇Infrared transmittance (%) Visible light transmittance (%) UV transmittance (%) Air permeability (cm3/cm2/s) IHds尨-^M*%? so Cup umbrella: 13·? lHds field and ^Ms%? 5-0* Umbrella: 13'as* H3ds^qKWMS^JA^^^:XH'aJ* Love°Good: wd*

^0?'·· LZ 201204888

Jim [04啭] 1Example 24| CU CU 2 一ο Ifd-pet| oo CQ | Rib I (Ν VO CN 23.5 1 1 33.0 1 24.8 inch rS 芝 oa | Example 23| CU 2 — 00 |fd-pet| Oo PQ l rib I L264_ 1 1 23.0 33.2 24.2 Ό ΓΟ ON tn &lt; |Example 22| CU CL. |fd-pet| v〇oo CQ 1 rib 1 | 282 | 22.5 1 ! 31.7 ! 22.9 fH i 306 &lt; |Example 21| CL Dm ο i〇|fd-pet| oo U 1 rib I 5; &lt;N 1 22.8 1 1 32.3 1 26.3 1 rn inch · | 302 | &lt; | Example 20 CU CU u-&gt; rj 2 |fd-pet| 00 U ί 纹 | CN oo CN 丨21.3 1 26.0 1 22.4 ON &lt;N 1 276 | &lt; 1 Example 19| 〇4 CU !〇兹|fd-pet| oo u 1 rib 1 ON (N 1 22.8 1 1 30.2 1 24.4 inch 270 CQ | Example 18| (1) (X g inch | fd-pet| vo 00 u 1 rib I &lt;s 19.6 1 21.5 ON (N &lt; Example 17 CU SO Bu s |fd-pet| oo ffi 1 rib 1 o oo CN 20.0 | 25.6 | 22.2 vs rn 315.9 CO Example 16 CU &amp; VO VI g |fd-pet 00 CQ 1 rib 1 | 282 | 1 22.9 1 I 30.7 1 25.2 1 ON rn ! 335.7 | CQ 1 Example 15 CU CU § 00 |fd-pet| 00 CQ |Ribbed | | 287 | 21.5 1 27.0 ;28.0 On i 266.2 OQ 1Example 14| CU CU s |fd-pet| VO oo &lt; 1 rib I oo ON (S 23.2 ! 32.6 ί 31.9 10.6 i 305.4 CQ example CU CU CU m V〇|fd-pet| oo &lt; 1 rib I r- v〇&lt;;N 21.8 1 29.6 | 26.9 1 II I 299.0 | &lt; Example 12 Oh CL. s σΝ p; |fd-pet| oo &lt; rib I oo (N 1 22.8 1 31.7 | 23.0 1 n | 291.9 | OQ Example 11 CU CU QJ |fd-pet| oo &lt; 1 rib 1 1 22.5 32.2 24.6 ro ,284.8 OQ Core component resin core component melting point (°c) MFR of resin component (g/10 min) Ρύ &gt; S 柴 s ε J ο ^ 体积 The ratio of the resin core to the sheath of the sheath component is the content of the titanium dioxide in the fiber C wt%) The amount of the fabric of the white fabric is the basis weight (g/m2) R value (° C) Infrared transmittance (%) Visible light transmittance (%) UV transmittance (%) Air permeability (cm3/cm2/s) Friction-resistant meltability 13d Forgotten field-^MS%JMZ^^&quot;δ 'α11·*$«铋:dd* Splash 9铋:3d* 201204888 38744pif [Table 3]

Example 25 Example 26 Example 27 Example 28 Core component resin PP PP PP PP core component resin melting point (°c) 142 142 142 142 core component resin MFR (g/10 min) 30 30 30 30 core component resin MVR (cm^lOmin) 34 34 34 34 Resin of sheath component FD-PET FD-PET FD-PET FD-PET Core to sheath volume ratio 1/6 1/6 1/6 1/6 Titanium dioxide content in fiber Rate (wt%) 1.8 1.8 1.8 1.8 Cross-sectional shape of the fiber Triangular rounded round single fiber denier (dtex) 3.5 1.8 3.5 1.8 Extension yarn or false twist yarn extension yarn extension yarn false twist yarn false twist yarn white powder AAAA fabric Tissue ribbed ribbed ribbed fabric per unit area weight (g/m2) 267 300 254 276 R value (.C) 21.2 20.9 20.9 19.2 Infrared transmittance (%) 25.2 28.4 27.6 22.5 Visible light transmittance (%) 21.5 21.9 21.5 17.1 UV transmittance (%) 3.3 3.3 3.4 2.1 Air permeability (cm3/cm2/s) 256 248 195 142 Friction meltability BBBB *PP: Polypropylene

*FD-PET: PET 29 containing 2wt ° / 〇 titanium dioxide 2012 20128888

Ji οοοε [inch&lt;] 1 example 401 〇1 3500" L 32100" U 17.3 1 Example 39| 〇| 2500 | | 22900 | CQ 16.4 | Example 38| 1 210 J | 3000 | | 27500 | U 26.1 | 37| | 3000 | [27500 | 1 B to C | 21.8 | Example 36 | 3000 | 27500 | &lt; 15.4 | t^J35| 〇 | 3000 | | 27500 | PQ 21.2 | Example 34 | 〇 | 3500 I | 32100 | U 21.8 |Example 33| 〇| 2500 I | 22900 | &lt; 14.9 I Example 321 1 210 1 | 3000 | | 27500 | U 23.8 | Example 31 | 3000 | 27500 | 0Q 22.1 1 Example 3〇 | 3000 | 27500 | 16.1 |Example 29| ο | 3000 | | 27500 | C 20.4 False 捻 Temperature (°c) False 捻 (T/m) False 捻 Coefficient White Powder Volume Reduction (%) 201204888 38744pif [Industrial Availability] The anti-heit sheath composite fiber can effectively degrade the texture of the fiber and effectively lightly heat (ie, red (four), the stability of the spinning step and the passability of the false twisting step. The weaving of the fiber is blocking the roughness (4) Make: This month, the heart of the sheath after the merger is not particularly limited. Excellent weaving, useful external supplies = in the field of sportswear, caps, tents = Middle East Local ethnic costume material or the like is extremely simple formula [FIG DESCRIPTION The main benefits reference numerals DESCRIPTION

Claims (1)

201204888 J8/44pif VII. Patent application scope: 1. A seed sheath composite fiber comprising a core portion and a sheath portion, and the core sheath composite fiber contains titanium oxide i wt% 〜3 wt%, and the core has a refractive index The tree moon day of A is the main component', and the resin has a resin having a refractive index B as a main component, and A and B satisfy the following formula (丨), lA-Bl^〇.〇l... (1). 2. A core-sheath composite fiber comprising a core portion and a sheath portion, wherein the core-sheath composite fiber contains TiO 2 wt% to 3% by weight, and the core portion has a thermal conductivity (W/m'K) ^ c The resin is used as a main component, and the resin having a thermal conductivity (W/m'K) of D is used as a domain, and c and D satisfy the following formula (2), |C — D|2〇.〇i·· ( 2). 3. The core-sheath composite fiber according to claim 1 or 2, wherein a main component of the core is a polyolefin resin, and a main component of the sheath is a polyester resin and the core The volume ratio of the portion to the sheath portion is 1/2 to mo. 4. The core-sheath composite fiber according to claim 3, wherein the thin: fcL tree is a poly-baked resin or a polypropylene resin. 5. The core-sheath composite fiber according to claim 4, wherein the polyolefin resin has a melting point of 130 ° C to 180 °. 6. The core-sheath composite fiber according to claim 4, wherein the polyester resin is a polyethylene terephthalate resin. The core-sheath composite fiber according to Item 6, wherein the poly-p-butyl phthalate resin is a polyethylene terephthalate resin satisfying the following formulas (3) and (4), 32 201204888 38744pif °-8Ss^5... (3) 2 core a$15... (4) where s and a are respectively the copolymerization ratio of the pyromellitic isophthalic acid unit of the polyparaphenylene. The copolymerization ratio of aliphatic diacids (m〇1%). The inverse of the number 2~8 of the complex rhyme of the core l〇^CMVR^40... (5) r 中ίΓ , CMVR is the core And the MVR (cm3/1〇min) of the resin having a lower melting point than the bismuth resin contact at a temperature higher than 25 ° C. Material 8 pin-receiving composite _, wherein the shape of the fiber _ is a right-angled cross-sectional shape of a triangle, four corners, hollow or ^ to the eleventh) 假 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工 加工The m compound age. Drinking a method of manufacturing a fake processing yarn, which satisfies the following (6) - for the processing of the core-sheath composite fiber as described in the first to the tenth item of the patent system, CTL^20) CTL + 30) ...... (6) Editing Cong..................................... .. 0.1cN/dtex^TES0.2cN/dtex... (8) 33 201204888 38744pif wherein TL represents a melting point of a resin having a lower melting point among the resin of the core component and the main component of the sheath portion, TT represents false twist temperature, K represents false twist coefficient, and ΤΕ represents false weight tension. Further, the false twist coefficient is a coefficient expressed by the relationship between the fineness of the fiber processed by the false twist and the number of false turns, and It is represented by the following formula: false twist coefficient = false twist (t/m) x (fiber fineness (dtex) + 10x9) 1/2. 13. A woven fabric, which is composed of a core-sheath composite fiber as described in claim 1 or 2, and has an air permeability of 240 cm 3 /cm 2 /s to 350 cm 3 /cm 2 /s, unit The woven fabric having an area weight of 220 g/m 2 to 300 g/m 2 and satisfying at least one of the following (E) and (F), (E) R value of 24 or less (F) infrared transmittance of 32% or less. The R value is a temperature rise value measured by a heat shield test. The woven fabric according to claim 13, wherein the content of the titanium oxide in the fiber is 1.4 to 2 (wt %), the volume ratio of the core portion to the sheath portion is 1/2 to 1/1 〇. 15. A woven fabric, which is any one of items 1 to 10 as claimed in the patent application. The woven fabric of claim 15 has a basis weight of 40 g/m 2 to 400 g/m 2 as described in claim 15 . The woven fabric of claim 16, which is a double-sided fabric which is a core-sheath composite fiber as described in any one of claims 1 to 10 as a spun yarn and/or a lining yarn. </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The woven fabric of claim 18 or 19, which is a false-twisted yarn as described in claim 11 of the patent application, as a veil. And/or the inner yarn is braided into double-sided fabric. 35 201204888 ^5/44pif IV. Designated representative map: (1) The designated representative figure of the case: None (2) Simple description of the symbol of the representative figure: None. When there is a chemical formula, please reveal the chemical formula that best shows the characteristics of the invention: Yi 201204888 38744pifl ^ is the Chinese manual of No. 100119971. There is no slash correction. This revision period: 丨00年丨0月7曰Invention patent specification (This specification format, order Please do not change the '※ mark part please do not fill in. ※ ※Application number: ※Application date: ※PC classification: , I. Invention name: (Chinese / English) * Core sheath composite fiber, containing the same False-twisted yarn for sheath composite fiber and its manufacturing method, and weaving fabric comprising these fibers SHEATH-CORE COMPOUND FIBER, FALSE TWIST TEXTURED YARN COMPOSED THEREOF, METHOD FOR MANUFACTURING THE SAME, AND WOVEN KNIT FABRIC INCLUDING THE FIBER II. The present invention provides a fiber which does not impair the texture of the fiber, blocks the radiant heat of the sun, and has good stability in the spinning step and the passability of the false twisting step, and a woven fabric that blocks the radiant heat using the fiber. The core-sheath composite fiber of the present invention comprises a station portion and a sheath portion 'and the core-sheath composite fiber contains titanium oxide 1 wt% to 3 wt% 'core portion with a resin having a refractive index a as a main component and a sheath portion having a refractive index B The resin is used as a component, and a and B satisfy the following formula (1), and the core composite fiber constitutes a woven fabric having a basis weight of 4 〇g/m 2 to 400 g/m 2 . |A—BjgO.Oi·.. ( 1) 1 201204888 38744pifl is the first Chinese book of No. 1 GG119971 _ 丨 纽 纽 修正 修正 修正 修正 修正 修正 修正 修正 修正 修正 修正 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 There is a core-sheath composite fiber that blocks radiant heat from the sun and a woven knit fabric containing the fiber. The present application claims priority based on Japanese Patent Application No. 2010-131416, filed on Jan. [Prior Art] Conventionally, as a fiber used for a curtain or a garment for the purpose of light-shielding, it is known that a white pigment such as titanium oxide, talc or barium sulfate, or inorganic fine particles such as carbon black or aluminum powder is dispersed. Fiber obtained by the method in the fiber (Patent Document 1 and Patent Document 2). In addition, as a fabric for white camouflage use on snow, ultraviolet reflective white containing a core yarn (co-reel yarn) in which a polyvinyl alcohol-based fiber is used as a yarn or a multifilament as a core yarn is known. Cloth $ (Patent Document 3). On the other hand, the technology of the core-sheath composite fiber is well known. For example, it is known to use a technique of using a core-sheath composite fiber as follows to produce a fiber having friction resistance. This fiber is a core-sheath composite fiber in which the sheath portion is a thermoplastic polymer having a bright point of 2 〇〇 ° C or higher and the core portion is a polypropylene nucleus containing a crystal nucleating agent (Patent Document 4). However, in the methods of Patent Document 1 and Patent Document 2, in order to sufficiently block the radiant heat from the sun, it is necessary to contain a large amount of inorganic fine particles in the fibers. As a result, there is a problem that not only the stability of the yarn making step is deteriorated, but also the texture of the fiber and the product is significantly impaired. In addition, although the polyvinyl alcohol-based fiber of the patent document 3 has the effect of blocking the Korean shot 201204888 38744pifl correction date: 100 years 1 () month 7 is the 100119119 Chinese manual, there is no scribe line to correct the heat, but the yarn strength exists. Lower question. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 9-137345 (Patent Document 3) Japanese Patent Laid-Open Publication No. Hei 9-137345 (Patent Document 3). [Patent Document 4] Japanese Patent No. 3452291 [Prevn] The object of the present invention is to provide a fiber which can effectively shield or absorb the radiant heat of the sun (i.e., infrared light) without using the texture of the fiber, and use the fiber. Weaving. Further, another object of the present invention is to improve the stability of the spinning step of the fiber and the passability of the false twisting step. The main purpose of the present invention is to a core-sheath composite fiber comprising a core portion and a sheath portion and the core-sheath composite fiber contains 1 wt% to 3 wt% (wt%) of titanium dioxide, and the core is made of a resin having a refractive index A Main component, sheath = 树脂 A resin having a refractive index B as a main component, and A and B satisfy the following formula (1). |A — BI20.01 (1) - Further, the present invention is directed to a core-sheath composite fiber comprising - a core portion and a sheath portion, and the core-sheath composite fiber contains titanium oxide 丨 wt% 〜3 wt%, core The resin having a thermal conductivity (W/mK) of c is used as a main component, and the sheath portion has a resin having a thermal conductivity (W/mK) of D as a main component, and C&amp;D satisfies the following formula (2). |C~D|^0.01... (2) 5 201204888 38744pifl For the 1001 Brain No. Chinese Manual, there is no slashing original revision date.) On the 7th of the month, the main idea of the present invention is to satisfy the following formula (5). ) Sheath composite fibers. 10SCMVR····(5) where 'CMVR is the MVR of the resin with a lower melting point at a temperature higher than 25 ° C in the resin of the main component of the core and the sheath, which is higher than the melting point of the resin. /i〇min). Further, the present invention is directed to a method for producing a false twist textured yam which is a core-sheath composite fiber satisfying the above formula (5) under the following conditions (6) to (8). Perform false twist processing. (TL-20) STTS (TL + 30)......(6) KS31000................................. (7) 0.1 cN/dtex^TE^0.2 cN/dtex (8) where TL represents the melting point of the resin having a lower scent point in the resin of the main component of the core portion and the sheath portion, and TT represents a false 捻Temperature, κ represents the false twist coefficient, and TE represents the false twist tension. Further, the false twist factor is a coefficient expressed by the relationship between the fineness of the fiber subjected to the false twist processing and the number of false twists, and is expressed by the following formula. False twist coefficient = false twist number (t/m) X (fiber fineness (dte 丨〇 x 9) in [effect of the invention] The core-sheath composite fiber of the present invention can block the radiant heat from the sun without damaging the texture of the fiber That is, the infrared light can be effectively shielded or absorbed, and the woven fabric using the fiber can effectively shield or absorb the radiant heat from the sun, that is, infrared light, when it is made into a curtain or a garment. 201204888 38744pifl Revision date: 丨(10)年The core-sheath composite fiber of the present invention can effectively shield or absorb ultraviolet light and visible light, and the woven fabric using the fiber is used as a curtain or a garment, as described in the Chinese Patent Specification No. 100119971. The ultraviolet light and the visible light can be effectively shielded or absorbed. Further, the core of the present invention has friction-resistant melting resistance to the composite fiber, and the woven fabric using the fiber is caused by sliding or falling when it is made into a sports cloth. Friction heat, weaving is also difficult to melt. In addition, the core-sheath composite fiber of the present invention can stably obtain the pass of the false twisting step of the fiber in the spinning step. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail. <The core portion has a resin having a refractive index A as a main component, and the sheath portion has a resin having a refractive index B as a main component 'A and B. It is necessary to satisfy the following formula (1) &gt; The core composite fiber of the present invention is required to have a core portion comprising a resin composition composed of a resin having a refractive index A as a main component, and a sheath portion comprising a resin having a refractive index B; The resin composition is used as a main component, and a and B satisfy the following formula (1) β | Α - B | means the absolute value of the difference between A and B (in terms of underarm, also referred to as refractive index difference). |^0.01... (1) Hunting makes the core slightly conjugated fiber satisfy the formula (1), and can contain no excess oxidation-titanium, so it can block the radiant heat from the sun without damaging the texture of the fiber. Or absorb infrared light. As one of the reasons, it can be considered that the light is reflected at the interface of the core. For example, the resin forming the core and/or the sheath is polyethylene resin, nylon 6 resin, polyester resin, polypropylene. Resin, etc. 201204888 38744pifl for the 100119971 The Chinese manual has no slash correction. The revised period: October 1st, October 7th, in the Fiber Handbook, Fiber Association (196th issue), pp. 218~219, Gentleman, November 30th, the fiber axis is The refraction tree in the right angle direction is like a variety of resin fiber polyethylene fiber 1.512~1 52η employees β °. Fiber L515, poly pair of bismuth dicarboxylate, 峨 dimension = ^ 88, nylon 6 &lt; core with thermal conductivity (W /m,K) . Γί&quot;τ;1)^κ) ^ is the resin of D as the main component, and makes =====) -Dl is the absolute value of the difference of _ (hereinafter also referred to as S difference; |CD|^〇.〇l... (2) fv hot hand illusion, for example, a resin forming a core portion and/or a sheath portion is a polyolefin resin, a polyester resin, a gas-polymerized vinyl resin, or the like. In the table (4) of the first Zhejiang (the 1968 issue), the thermal conductivity of the various polymers of the monthly mass 3 is 0 叱-Wdeg, m. -Wl] is as follows: Polyethylene 7 ()~9 7 _ (is〇t-pr〇Pylene) having a density of 0.918 g*cm_ 5.2, poly-p-dibenzoic acid ethyl a = vinyl chloride 4.0 8 ^ Convert the unit of the above thermal conductivity value to (I is the following value. Density 〇.918g, Polyethylene 〇·29~〇4 Bu and the same row of polypropylene 2〇12〇4888 38744pifl No Chinese version of No. 100119971 Line correction date of this revision: October 7th, 100th, 〇22, polyethylene terephthalate 0.22~0.28, polyvinyl chloride 0.17 &lt; core saddle composite fiber containing titanium dioxide 1 wt% ~ 3 wt% &gt; In the core-sheath composite fiber of the present invention, it is necessary to make the core-sheath composite fiber contain 1 wt% to 3 wt% of titanium dioxide. When the titania is 3 wt% or less, the effect of blocking the radiant heat of the sun is caused by the addition of titanium dioxide. The viscosity increase is not so large, so it does not cause poor yarn making. Conversely, when the titanium dioxide is more than 1 wt%, it has resistance. The radiant heat effect of the sun of the purpose. When titanium dioxide is formulated in the sheath portion, the yarn path guide may be worn in the step after the yarn making. Therefore, the titanium dioxide is preferably blended in the core. In addition, when titanium dioxide is contained in the resin of the core portion and the sheath portion, the effect of blocking the radiant heat of the sun is most preferable, and the titanium dioxide to be used is preferably titanium dioxide used for producing synthetic fibers or the like. However, in terms of dispersibility, it is preferred to use anatase type titanium dioxide. Further, it is preferable that the core-sheath composite fiber contains titanium oxide 丨 4 wt% 〜 2 W Wt0 / 〇. The average particle diameter of the particles is preferably in the range of from 0 μm to 1 μm in the range of from 0.1 μm to 0.3 μm in consideration of stability in the spinning step. For example, titanium oxide which can be easily obtained is Titanium dioxide ADD manufactured by Kronos, etc. &lt;R value is 24 or less&gt; 3 The core-sheath composite fiber of the present invention preferably has a gas permeability of 24 〇cm W/s to 350 cm W. /s, the weight per unit area is 22〇g/m2~· 9 201204888 38744pifl is the round trace; the number is in Chinese manual without a slash correction. The date of this correction: (10) Year 1 month 7th g/m2 weaving, R The value is 24 or less. The R value is a temperature rise value (° C.) measured by heat shielding property, and by setting the R value to 24 or less, it can be suitably used in an environment in which a weave is used. The sizing value is more preferably 23 or less, and more preferably 22 or less. In addition, the standard unit weight of the fabric weaving material of 220 g/m2 to 300 g/m2 of the material area weight, the air permeability of cm3/cm2/S~350 cm3/cm2/s is the above-mentioned unit surface. ^ Standard ventilation of woven fabrics. The right 砚 重 比较 比较 q q q q q q q q q q q q q q q q q q 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚 砚The value is reduced. °" Naturally, the main component of the core is a polyethylene resin, the ruthenium portion is a poly sulphide, and the example of the core __ ratio is changed 丨 5' with the content of titanium dioxide in the fiber. The rate (wt%) decreases from 2鸠, and the R value rises. - The reason is considered to be an influence on the refractive index difference between the core and the resin. The left 4 heat &lt; infrared transmittance is 32% or less&gt; The core-sheath composite fiber of the present invention preferably has an infrared ray when formed into a woven fabric having a unit area of 220 g/m to 300 g/m 2 , and can effectively be masked by making the infrared ray transmittance 32% or less. = absorbing the radiant heat of the sun, that is, infrared light. The infrared transmittance is more than the following, and more preferably 27% or less. Further, similarly to the above R value, according to the example i to the example $, 10 201204888 38744pifl 10011997! No. Chinese manual without line correction This revision date is dated on September 7th with the second of the fiber The content (wt%) of titanium is lowered from 2 wt%, and the infrared transmittance is increased. It is preferable to satisfy both the range of the above R value and the range of infrared transmittance. <Principal component of the resin composition of the core> The core-sheath composite fiber of the present invention preferably has a core resin composition mainly composed of a polyolefin resin, and the polyolefin resin forming the core is a polyethylene resin, a polypropylene resin, etc. When the polyethylene resin is blended in the core portion and the resin having a lower thermal conductivity than the polyethylene resin is blended in the portion, the difference in thermal conductivity is a positive number, and the difference in thermal conductivity is large. The heat is more likely to be transmitted in the longitudinal direction of the fiber than in the radial direction of the fiber, and the heat becomes difficult to transport in the thickness direction of the woven fabric. The polyethylene resin used is a known fiber 荨 grade molecular weight and density, and is not It is particularly limited. A polyethylene resin which can be easily obtained is, for example, Kernel KF283, KF380, etc. manufactured by japan polyethylene. When a polypropylene resin having a low thermal conductivity is blended in a core, it will be guided. When the nylon resin of the polypropylene resin is blended in the sheath portion, the difference in thermal conductivity is negative, and the difference in thermal conductivity is large. Therefore, it is considered that heat is difficult to be transmitted in the radial direction of the fiber, and the heat becomes It is easy to transport in the longitudinal direction of the fiber. 'The polypropylene used is not limited as long as it is a known fiber grade molecular weight and density. The easily obtainable poly(tetra) resin is, for example, N〇vatec SA manufactured by Japan Polypropylene Co., Ltd. ( n, SA〇3, etc. Further, in order to impart stretchability, bulkiness, and the like to the woven fabric, the core-sheath composite fiber of the present invention can be subjected to dummy processing as needed. For the processing of the fake treatment 201204888 38744pifl, the first component of the resin composition of the core is the main component of the resin composition of the core. In the town, the polyolefin resin of the melting point in the range of 130 ° C to 180 ° C is raised in the town. When the melting point of the polyolefin resin is 130 ° C or more, the white powder in the step is produced. The friction resistance of the inventive woven fabric when the melting point is 180 ° C or less. &lt;Main component of the resin composition of the sheath portion&gt; The core-sheath composite fiber of the present invention is preferably a resin of a sheath portion, and the constituent fibers are formed of a polyester resin. The polyester resin forming the sheath portion is a known 6-grade polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate, and copolymerized poly(p-phenylene terephthalate). Further, it is more preferable that polyethylene terephthalate is polyethylene terephthalate satisfying the following formula and formula (4). When the following formula (3) formula (4) is satisfied, it can be dyed with a cationic dye, and normal dust dyeing can be achieved 0.8^s^5... (3) 2^a^l5... (4) where ' s and a are respectively the copolymerization ratio (m〇1%) of the thiodiphthalic acid unit in the polyethylene terephthalate resin and the copolymerization ratio of the aliphatic dicarboxylic acid having a carbon number of 2 to 8 (m) 〇l〇/〇). When s is 0.8 mol% or more, the distinctiveness of the cationic dye can be made good. Further, when s is 5 m () 1% uT, the I &amp; degree of the poly &amp; material can be appropriately set to increase the solubility of the polymer during polymerization. As a result, the fiber strength did not decrease. * Do not pick up the metal-metal salts (bell salt, sodium salt, salt, gamma salt, barium salt) of the isophthalic acid. ! = 201204888 38744pifl For the 10011W71 Chinese manual, there is no slash correction. Amendment date, year 7th, and 7th. It is necessary to use alkaline salts such as magnesium salts and calcium salts of these compounds. Among them, it is preferred to use a sodium salt of 5-phosphoisophthalic acid. 〇 When a is 2 mol% or more, the dyeability under normal abrasion dyeing can be made good. When a is 15 mol% or less, the glass transition temperature or melting point of the polyester resin can be set to an appropriate range. As a result, a fiber product having the necessary mechanical properties, firmness, heat resistance and the like can be obtained. Fat with a carbon number of 2 to 8 is known as a sulphonic acid, glutaric acid, adipic acid (a (jipic acid), suberic acid, sebacic acid, etc. Preferably, it is adipic acid. When adipic acid is used, appropriate confusion can be generated in the amorphous structure of the fiber to improve the dyeability. &lt;The volume ratio of the core to the sheath is 1/2~ι/ 〇〇&gt; The volume ratio of the core portion to the sheath portion in the core-sheath composite fiber of the present invention must be 1/2 to 1/1 〇. When the volume ratio of the core sheath portion exceeds 1/2, the sheath portion is broken. When the core is exposed, the yarn stability is lowered. When the volume ratio of the core sheath is less than 1/10, the heat shielding property of the fiber is deteriorated. The core is in terms of yarn stability and heat shielding. The volume of the sheath portion is preferably in the range of 1/4 to 1/8. &lt; Satisfy 10SCMVRS40 (5) &gt; Tree having a higher drop point in the main component of the melting point portion and the sheath portion The MVVR of the resin at a temperature higher than the pit height is preferably 1 〇 CMVR$4 〇. When cmvr ”,, when Point low 13 201204888 38744pifl Correction of the 曰 働 10 10 10 10 10 10 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 119 Furthermore, 'white powder is a substance attached to a spinner, a cigarette thief, etc. when performing false twist processing. When white powder is produced, the characteristics of the composite fiber of the present month are lowered, that is, the light of the sun is blocked. The effect of the heat radiation or the friction-resistant meltability also reduces the grade of the woven fabric. In addition, the generation of white powder reduces the passability of the false twist processing and the step passability in the manufacture of the fabric or the braid. However, R can be When the composition of 40 or less is reduced, the resin composition of the structure of the white powder is about to melt the composition of the sheath from the spun yarn before the spouting of the yarn feeder to the rigid region. At this time, there is occasional core. The main component of the fiber is generated into a 'knife into the Le part. In the false twist processing order, two exposed into the sheath of a small amount of low molecular weight components, when the core component of the core can be empty or γ : The shaft is straight The corner is a triangle, a quadrangular, a hollow or a γ-type; the type is; the cross-sectional shape is the radiance, and the radiation that blocks the sun is increased, and the anti-shape of the light is t-empty cross section. Guideline: qi] = 201204888 38744pifl is the Chinese manual of No. 100119971. There is no slash correction. This correction date: The effect of blocking the radiant heat of the sun on October 7, 100. &lt;Single fiber fineness is less than or equal to 3 dtex&gt; The single-fiber fineness of the core-sheath composite fiber is preferably 3 dtex or less, more preferably 2 dtex or less, and still more preferably 1 dtex or less. When the single fiber fineness is so small, the surface area of the fiber can be increased, and the reflection portion of the sunlight can be increased, so that the effect of blocking the radiant heat of the sun can be enhanced. &lt;Method for Producing Core-sheath Composite Fiber&gt; 0 The core-sheath composite fiber of the present invention can be produced by a known yarn-making method of a core-sheath composite fiber. Further, the spinning hole of the spinneret for spinning the core-sheath composite fiber has a larger pore diameter than the spinning hole of the spinning nozzle in the usual spinning, and is preferably 0.3 μm to 9.5 μm. Further, the method of stretching after spinning may be either a method of temporarily winding up the unstretched yarn or a method of stretching without stretching the undrawn yarn. &lt;Fake twisted yarn containing core-sheath composite fiber&gt; Q l The core (tetra) fiber of the present invention is preferably a false twisted textured yarn. When it is a pseudo-twisted yarn, the thief surface is turned into a polygonal cross-section with the fiber axis, and the effect of the solar radiant heat is increased, and the radiant heat of the sun is blocked.制造^31000................... TL^31000............................................................................... .............. (7) 15 201204888 Revision date: 1〇〇1〇7日38744pifl is the 100119119 Chinese manual without a slash correction 0.1 cN/dtex^TE^〇. 2cN/dtex (8) where TL represents the melting point of the resin having a lower melting point in the resin of the main component of the core portion and the sheath portion, TT represents the false twist temperature, K represents the false twist coefficient, and TE represents the false twist tension. . Further, the false twist factor is a coefficient expressed by the relationship between the fineness of the fiber subjected to the false twist processing and the number of false twists, and is expressed by the following formula. False 捻 coefficient = false twist number (t / m) X (fiber fineness (dtex; Kl 0 X 9) 1 /2 For example, the main component of the sheath is polyethylene terephthalate resin, core In the case where the main component is a polypropylene resin, the false twist temperature is preferably 147 ° C to 197 ° C. The field 1 is 槪 槪 默 默 默 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 〇〇〇 cri cri cri cri cri cri cri cri cri cri (endbreakage), so it is better. Further, when the false twisting force is 0.1 cN/dtex or more, curling or breakage can be suppressed, which is preferable. Further, when the false twisting tension is 〇.2c, the raising or breaking of the false twisted textured yarn can be suppressed, which is preferable. <Textiles with a weight per unit area of 40 g/m2 to 4 〇〇 g/m2> 彳 sheath composite fibers (4) for weaving (4) constituting yarn. When it is compiled, there are no special rules for the organization, organization, or weaving method, and the production of the machine. The woven fabric of the present invention has an area weight of 15 G g/m2 to _2. = In ί, it is easy to block the effect of blocking the heat of the light. When: : The bit area is _4. . *2 or less, the thickness is not increased" <The core "composite fiber_for the veil and / or I (four) braided double-sided weaving 16 201204888 J8/44plfI for the first face of the gods _ face correction makeup date · _ 7th (woven fabric of reversible knitted fabric) The structure of the woven fabric of the present invention is not particularly limited, and it is preferably composed only of the core-sheath composite fiber of the present invention, and the core-recombination of the present invention is formulated at a high degree. The double-layered fabric is exemplified by the fiber and the structure which effectively exhibits the characteristics of the core-twisted composite fiber. The double-faced fabric is knitted by the composite fiber of the present invention as a spun yarn or a crepe. "In the double-faced fabric, the fabric One side is the constituent surface of the core-sheath composite fiber that blocks the light-heating heat, and the other side is the constituent surface of the other fibers, and the function or specialty of the fiber. ^ The constituent surface of the core-sheath composite fiber has not only the resistance = too radiant heat but also the radiation from the human body: =: clothes made of double-faced fabrics, etc. can be numbed according to seasons and environments, for example, Thermoplastic fibers such as cotton, ο, and polyester. In addition: 隹 半 semi-synthetic fiber :: The cross-sectional shape of the fiber axis in the right-angle direction is not particularly limited. The texture and gloss of the weaving and weaving, etc., and the section shoes can be selected from flat and Y-shaped cross-section shapes. , y, &lt; 捻 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 含有 ^ ^ ^ ^ ^ ^ ^ ^ ^ Le composite fiber and other fiber combination 201204888 38744pifl for the first GG119971 »文_书__1£本修IE date: October 1st, 1GG η mouth on A 士士 from I,, ' · · Yi Yikou: υυ υυ 平Iu /J / μ month of the composite fiber and other fibers combined with the characteristics of other fibers (such as gloss, ,, the main two, can give the pair of fibers to the twisting of the pair of fibers] Feeling, etc.). In addition, the knitting and weaving of the crepe are not elastic. And the appearance is decided. ‘ depending on the purpose of the texture Further, it is used for other synthetic fibers such as natural fibers, recycled fibers such as enamel, and thermoplastic fibers such as acetic acid, hemp, and enamel fibers. In addition, the cross-sectional shape of the two-twisted fiber and the right-angled direction of the agitator axis is not specified: ::: in the fiber: it: !, the cross-sectional shape can be in the cross-sectional shape such as a daisy, a circle, a flat, or a gamma select. [Examples] Hereinafter, the present invention will be specifically described by way of examples. Further, each evaluation item was measured by the following method. (R value) Weaving of fiber, using the cover of Japan Chemical Fiber Inspection Association The heat measurement method was measured. The temperature rise value after 15 minutes from the start of the measurement was taken as the R value. The method of measuring the heat shielding property is as follows. The sample was held on about 5 mm of the black drawing paper, and the light was irradiated from the side of the sample. The temperature in the center of the drawing paper was measured by a thermocouple over time. Use lamp: Iwasaki Electric Co., Ltd. Eye lamp (light spot) PRS 100 V 500 W 18 201204888 38744pifl Correction period: October 7th, 100th, No. 100119971 Chinese manual without scribe line correction : 50 cm Irradiation time: 15 minutes Laboratory temperature: 20 ± 2 ° C (infrared transmittance, visible light transmittance, and ultraviolet transmittance) Using a spectrophotometer (U-3400 manufactured by Hitachi, Ltd.) The following operations (1) to (6) were carried out, and the respective transmittances were measured. (1) A sample of a woven fabric. (2) The transmittance (%) (hereinafter referred to as Tg) in the absence of the sample was measured every 5 nm in the range of 250 nm to 2000 nm. (3) The sample was mounted on a spectrophotometer and the transmittance (%) (hereinafter referred to as Ts) in the presence of the sample was measured every 5 nm in the range of 250 nm to 2000 nm. (4) Correct the Ts by the following equation every 5 nm in the range of 250 nm to 2000 nm, and calculate the corrected transmittance (ο;) (hereinafter referred to as T). T = (Ts/Tg) xlOO Ο (5) The infrared region, the visible light region, and the ultraviolet region are set to the following wavelength ranges. Infrared region 700 nm to 2000 nm, visible light region 400 nm to 700 nm, and ultraviolet region 250 nm to 400 nm (6) Calculate the arithmetic mean of τ in each region of (5) as infrared transmittance (%), visible light penetration Rate (%) and UV transmittance (%). (Intrinsic viscosity) 0.25 g of polymer was pulverized and dissolved in phenol/tetra-ethane (50/50) 19 201204888 38744pifl No. 100119971 Chinese manual No underline correction This correction date: October 7, 100 mixed solvent In 50 ml, the temperature was adjusted to 25 ° C. The measurement was carried out using an automatic viscometer (Model AVL-4 manufactured by Sun Electronic Industries). Furthermore, the calculation formula is as follows. [η] = [ (1 + 1.04ηδρ) 1/2-1] / 〇 · 26 (melting point) Measurement was carried out at a temperature increase rate of 1 〇 ° C / min using a differential scanning calorimeter (DSC220 manufactured by Seiko Instruments Co., Ltd.) . (Melt flow rate (MFR)) Measured in accordance with JIS K6758 (230 ° C, 2.16 kg load). (Melt volume rate (MVR)) Measured at 280 ° C according to ISO 1133 (2.16 kg load). (The amount of white powder in the sham step) Using the IVF338 false twisting machine manufactured by Ishikawa Seisakusho Co., Ltd., the false-twisting process of the core-sheath composite fiber is considered to be the case where white powder is produced more than 1 hour after the start of the false twisting process and less than 2 hours after the start of the false twisting process. c. If the white color is generated for 2 hours or more and less than 8 hours, it is considered as B to C, 8 hours or more, and no white powder is produced for 16 hours. B is considered as B. Even if white powder is not produced for more than 16 hours. Treated as A. In addition, the false twist conditions in each of the examples and the comparative examples are 3 〇〇〇t/rn (in the case of an extended yarn of 84 dtex, the twist coefficient is 27,500), and the false twist temperature is unless otherwise specified. 17 (TC, false twist speed is 15〇m/min, false twist tension is 0.15 cN/dtpx. (Air permeability) in environment variable room with 20 C and relative humidity of 65%, according to JIS L 1096 Ventilation A method ( Frazier type method, the use of the pass 20 201204888 38744pifl correction date year If) month 7 is the 100119971 Chinese manual without a slash correction of this gas 5 test machine FX3300 (made by TEXTEST) for measurement Ventilation (cm3/cm2/s). (Fruit friction melting property) The measurement was carried out by performing a rotor type friction melting test (loading of 1 〇 kg, 3 seconds of pressing) in accordance with JIS L 1056 (method B). As a result of the measurement, a state in which no melt trace was generated was regarded as A, a state in which a melt trace was generated but not cut was regarded as B, and a cut state was regarded as c. &lt;Crimping characteristics&gt; Measurement was carried out in accordance with JIS L-1013. (Example 1) A polyethylene resin (PE) (manufactured by Sakamoto Polyethylene Co., Ltd., MFR 4 g/10 min) was used as a core. 2 wt% of titanium dioxide (anatase type, primary particle) will be added to polyethylene terephthalate (pET) (manufactured by Mitsubishi Rayon, intrinsic viscosity [η] 〇 6^6, melting point 256 C) PET having an average particle diameter of 0.3 μηι) was used as the sheath portion. The core-sheath composite ratio (volume ratio) was set to 1/6 to provide an aperture 〇 4 mm. The spinning device of the core-sheath composite spun having a number of holes of 24 was spun at a spinning temperature of 290 C and a spinning speed of 1800 m/min to obtain an undrawn yarn. The obtained undrawn yarn was stretched to an elongation yarn of 84 dtex/24 filament at an elongation speed of 600 m/min, an elongation temperature of 85 ° C, a heat setting of 55 ° C, and a maximum stretching ratio of 0.68 times. The four obtained stretched yarns were conjugated to form a fineness of about 330 dtex. A woven fabric of ribbed structure was produced using a 16 gauge (root/2.54 cm) flat knitting machine. The R value of the obtained braid, the infrared transmittance (%), and the visible light penetration 21 201204888 38744pifl is the 1001191191 Chinese manual without a slash correction. The revision date: October 7th, 100th rate (%), UV wear The permeability (%) and the degree of ventilation are shown in Table 1. (Example 2 to Example 7, Comparative Example 3, and Comparative Example 4) In the same manner as in Example 1, except that the core-sheath composite ratio (volume ratio) and the resin of the main component of the core portion were changed as in Table 1. The yarn and the braid of the core-sheath composite fiber are formed. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained knitted fabric are shown in Table 1. (Comparative Example 1) A resin composition in which 2 wt% of titanium oxide was added to PET (Intrinsic viscosity [η] 〇.676, melting point 256 ° C manufactured by Mitsubishi Rayon Co., Ltd.) was used, and a pore diameter of 0.3 mm and a number of pores were used. The spinning device of the spun nozzle of 24 was spun at a spinning temperature of 290 ° C and a spinning speed of 1800 m / min to obtain an unstretched yarn. The obtained undrawn yarn was stretched at an elongation speed of 600 m/min, an elongation temperature of 85 ° C, a heat setting temperature of 150 ° C, and a maximum stretching ratio of 0.68 times to make an extended yarn of 84 dtex / 24 filament. The four obtained stretched yarns were conjugated to form a fineness of about 330 dtex. A woven fabric of ribbed structure was produced using a 16-pin (root/2.54 cm) flat knitting machine. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), and air permeability of the obtained woven fabric are shown in Table 1. (Comparative Example 2 and Comparative Example 5) An extension yarn and a knitted fabric were produced in the same manner as in Comparative Example 1, except that the amount of the titanium dioxide added was changed as in Table 1. The R value of the obtained braid, the infrared transmittance (%), the visible light transmittance (%), and the ultraviolet light penetration 22 201204888 38744pifl is the 1001191191 Chinese manual without a slash correction. The revised period: October 100 The 7-day rate (%) and the air permeability are shown in Table i. (Example 8) Using a slightly composite spun nozzle having a hole diameter of 0.3 mm and a number of holes of dtex/36 fllament, the elongation of the core-sheath composite fiber of the present invention was obtained in the same manner as in Example 1. _ latitude 154 ❹ - value of _ corrugated taffeta net ((: =: fabric. The R value of the resulting fabric 'infrared wear; see: line penetration (%), UV transmittance (% And the air permeability is shown in Table i + Further, the fabric cover coefficient value is a value obtained by the following formula: Fabric Coverage Value (DWp) 1/2xMWp+ (DWf) 1/2xMWf where DWp is the warp total fineness (dtex ), MWp is the warp weaving density (root / 2.54 〇 11), 0 \\ ^ is the weft yarn total fineness (plus \), ^ 1 \\ ^ is the weft yarn weaving density (root / 2.54 cm). (Comparative Example 6) Mitsubishi Rayon's bright 33 O dtex/36 filament atmospheric cation dyeable yarn is made into a corrugated tower of 170 / 2.54 cm, latitude / 2.54 cm (with a fabric cover factor of 1901) Fabric of varnished fabric. R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%) and ventilation of the obtained fabric The degree is shown in Table 1. (Example 9) A 167 dtex/48 filament extended yarn was produced using a core-sheath composite spun having a hole diameter of 0.5 mm and a number of holes of 48, and was obtained in the same manner as in Example 1 2012 20120888. 38744pifl is the Chinese manual of No. 100119971. There is no slash correction. This revision date: The extended yarn of the core-sheath composite fiber of the present invention was obtained on October 7, 100. The core composite fiber invented by Laqi 4 is used as the S 捻 30 t / m yarn (plied yarn), made of tarpaulin for flat material of 27 / 2.54 cm, 30 / 2.54 cm (fabric coverage factor CF = 1473). The R value, the infrared ray transmittance (%), the visible light transmittance (%), the ultraviolet ray transmittance (%), and the air permeability of the obtained fabric are shown in Table 1. (Comparative Example 7) Four Mitsubishi Rayon were pulled together. The semi-dull 167 dtex/48 filament polyester multifilament manufactured by the company is used as a strand of 30 t/m yarn for 27/2.54 cm, weft 32 A waterproof base fabric with a root/2.54 cm (textile coverage factor (3) value of 1525). The scale of the resulting fabric Infrared transmittance (/ square), the visible light transmittance (%), ultraviolet transmittance (%) and the air permeability are shown in Table 1. (Example 10) An extended yarn of the core-sheath composite fiber of the present invention was obtained in the same manner as in Example 9. A double jersey knitting machine with a 22-pin number (root/2.54 cm) is used to interlace the 167 dtex/48 filament S-direction false twisting of the present invention into the z-direction false twist. A processed yarn made of yarn, the inner yarn is made of i: i using the same interlaced processed yarn and acrylic textile yarn 1/52 (manufactured by Mitsubishi Rayon Co., Ltd.) to form a 2x2 deer embossed structure. Knitwear. The R value, infrared transmittance (%), (9), ultraviolet transmittance (8) and air permeability of the obtained knitted fabric are shown in 2 first-line tooth penetration rate 201204888 38744pifl. Revision date: October 7th, 1st year is 100119971 No. Chinese manual, no scribing correction (Comparative Example 8) Using a semi-matte 167 dtex/48 filament polyester multifilament manufactured by Mitsubishi Rayon Co., Ltd., to 捻 捻 捻 捻 而 而 而 而 而A knitted fabric was prepared in the same manner as in Example 10 except that the processed yarn of the core yarn of the present invention was replaced with the processed yarn: the R value of the obtained knitted fabric, the infrared transmittance (%), and the visible light were worn. The permeability (%), the ultraviolet transmittance (%), and the air permeability are shown in Table 1. (Examples 11 to 24) In the same manner as in Example 1, except that the resin of the main component of the core was changed as in Table 2, the stretched yarn of the core-sheath composite fiber and the woven fabric were produced. The R value, the infrared transmittance (%), the visible light transmittance (%), the ultraviolet transmittance (%), the air permeability and the frictional melt resistance of the obtained knitted fabric, and the amount of white powder in the false twisting step are shown in In Table 2. (Example 25) In the same manner as in Example 11, except that the cross-sectional shape of the fiber axis in the direction perpendicular to the fiber axis was set to be two angles, the yarn and the woven fabric of the core composite fiber were produced. The R value, the infrared transmittance (%), the visible light transmittance (%), the ultraviolet transmittance (%), the air permeability and the frictional melt resistance of the obtained knitted fabric, and the amount of white powder in the false twisting step are shown in In Table 3 (Example 26), in the κ Example 11, the stretched yarn was set to 84 dtex/48 filament 'other than the above, and the stretched yarn and the knitted fabric of the core-sheath composite fiber were produced in the same manner as in Example U. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), air permeability and friction resistance of the obtained knitted fabric are not shown in the Chinese manual No. 100119971. (Line Correction Revision Date: The amount of white powder in the melting and false twisting steps of the 1st, 1st, 7th, and 7th is shown in Table 3. (Example 27) In Example 11, 'the yarn is further processed as a fake Yarn, the weave of the false twisted processed yarn, the wrinkle of the obtained knitted fabric, red transmittance (%), visible light transmittance (%), ultraviolet transmittance (% = air permeability and financial friction meltability, spinning The yarn stability and the amount of powder in the false twisting step are shown in Table 3. (Example 28) In Example 26, the stretched yarn was further used as a false twisted textured yarn to prepare a knitted fabric of 3 false twisted textured yarn. The R value, infrared transmittance (%), visible light transmittance (%), ultraviolet transmittance (%), air permeability and frictional melting resistance of the knitted fabric and the amount of white powder in the false twisting step are shown in Table 3. (Example 29 to Example 34) Using IVF338 fake 制造 manufactured by Ishikawa Seisakusho Under the condition that the false twist speed is 150 m/min and the false twist tension is (U5 cN/dtex, the temperature and the number of false turns (t/m) are changed as shown in Table 4, and the extended yarn of Example 12 is faked.捻Processing. The measurement result of the amount of white powder in the false twisting step and the crimping ratio of the false twisted processed yarn are shown in Table 4 t. (Example 35 to Example 40) Using the IVF338 false twisting machine manufactured by Ishikawa Seisakusho Co., Ltd. Under the condition of 150 m/min and the false twist tension of 0.15 cN/dtex, the false twist temperature and the number of false twists (t/m) were changed as shown in Table 4. 'The extended yarn of Example 16 was subjected to false twist processing. The measurement result of the amount of white powder in the step and the crimping ratio of the false twisted processed yarn are shown in Table 4. 26 201204888 [1^]B im:2 Zhuang gI :smHr _ -~ ο And ΗΓsfl3⁄4 destroy _KH辗扒旮黯ΙΔ6 6 I ί 0 0 I濉赃υίζ-οοε Comparative Example 8 SD-PE T separate spinning • 0.35 2x2 deer dot relief VO m 32.0 22.4 ro in rs */ί 10 1 S FD-PET oo 2x2 deer point ΓΊ 2m 22.8 25.3 21.0 ON rn Comparative example 7 ί Separate spinning of SD-PE T • 0.35 1 plain fabric 1 Wt S 35.2 37.4 33.4 On fN m ί ^ S Inch FD-PET 00 1 Flat fabric 1 oo On 24.3 29.5 24.5 v〇沄Comparative example 6 B-PET single spinning '0.05 Corrugated taffeta 36.1 40.4 1 38.7 15.8 On CS fO ί °° e 1 FD-PET OO Corrugated Taffeta 25.8 i- 31.9 ! 26,4 On wi ro m Comparative Example 5 Individual i-spinning of B-PET 0.05 rib rs 27.5 1 38.8 1 37.1 &gt; n 247 Comparative Example 4 ω α. 8 B- PET oo 0.05 | rib L · a rn v 〇 &lt; N i vd Γ * Ί 18.0 270 Comparative Example 3 ω CU SD-PET CO rn 〇 纹 f fS i- 1 26.5 36.9 p*S trv c5 279 Comparative Example 2 | SD -PE T alone spinning 0.35 rib rs 1 26.3 35.6 31.8 &gt; n 5 Comparative Example 1 FD-PET alone spinning 's ribbed guide fS ! 24.7 33.9 26.7 Bu (S 279 Example 7 1 CU (N *r\ ri P*~l oo FD-PET oo rib oo &lt;N (S ! 23.2 30.6 23.1 in rt Instance 6 1 CU (N ir&gt; cs ΓΟ oo FD-PET oo rib Swallow fN 1 23.2 29.9 23.4 &lt;〇&gt; 253 V» 〇&lt; s FD-PET 1/10 c&gt; rib 1_ 24.0 31.3 24.3 oo 259 poor 4 | m Ο. s inch FD-PET s in rib 1_ rs 21.3 24.9 23.7 VO inch · 263 ω s inch FD-PET 2 Luo &lt;N 丨21.7 26.0 24.8 o 270 Example 2 Oh s η· FD-PET oo oo rib (N 30.2 23.7 256 1 ω &amp; H inch FD-PET s oo rib The melting point (°c) of the resin of the resin core component of the N 23.7 23.3 rn OO ΙΛ es core component; the MFR (g/10 min) of the resin of the core component; the mvrI (cm3/10 min) of the resin of the core component The ratio of the resin core to the sheath is smaller than that of the titanium dioxide in the fiber (wt%). The texture of the woven fabric is the basis weight (g/m2). R value (eC) Infrared transmittance (%) Visible light wear Permeability (%) UV transmittance (%) Air permeability (cm3/cm2/s) H3d宕窠-^MS%JMSO Thoracic ♦ H3'a* X3ds^-忒us%JMS-o 埤 Umbrella: XHd- α* lad^^qKWMS% 苢3埤: 13'α*寰:&lt;!'Love ο铋:ω* LI 201204888 [(Ν^] Bincol address 001: hi-hat 3! _ speak HI. 5 outline 壊 *1 饀 仆 _ _ _ _ 6 6 2 0 0 1 UU inch inch /.οοε I example 24| Pm 154 one ο FD-PETl 〇〇PQ rib 1 262 1 23.5 1 I 33.0 24.8 | inch cn irj 芝 CQ I example 23| ω Cu s οο [fd-pet 〇〇 CD 1 Rib 1 1 264 1 Γ23.Ο 1 33.2 Γ 24.2 1 Ό ΓΊ ON r〇&lt; I example 22 Δη CU m fS ΙΤΪ s |fd-pet1 OC CQ 1 rib 1 | 282 1 ! 22.5 I 31.7 22.9 1 rS s &lt I Example 21| CU Oh ο W-ί ΓΛ |fd-pet 〇〇Ο 1 rib | 254 | 22.8 | ;32.3 26.3 1 inch* S &lt; Example 20 Oh r4 (Ν 2 [fd-pet| 〇〇U 1 rib I | 282 1 21.3 1 26.0 22.4 | as 1 276 | &lt; Example 19 CU Oh !S οο Os |fd-pet| 〇〇Ο | rib | | σ\ &lt;Ν | 22.8 | | 30.2 | 24.4 | Inch cn o &lt;N m I Example 18| PJ cu g inch|fd-pet 〇〇a I rib | CN L 19Α 1 丨21.5 | 〇\ (N un fS &lt; Example 17 cu CU 卜 |fd-pet| 〇〇CQ | rib | ο οο (Ν 20.0 J | 25.6 I 22.2 1 inch rn 315.9 CQ I example 16| Oh CU ζΐ |fd-pet| 〇〇CQ I | CS οο (Ν I 22.9 I 30.7 丨25.2 1 Os rn 1 335.7 1 cn Example 15 〇&lt; Ph οο οο inch|fd-pet| 〇〇CQ I rib | CS | 21.5 1 | 27.0 | I 28.0 | 〇 \ 1 266.2 ] m Example 14 Oh cu Bu Ind-petJ 〇〇 &lt; rib lining L 298 —— 23.2 32.6 ! 31.9 10.6 305.4 CQ Example 13 νΊ CO Si Ifd-petJ 〇〇&lt; I Luo y L 267 1丨21.8 I 29.61 1 26.9” 1·*·^ 1 299.0 &lt; Example 12 pH 〇&lt; s OS Ifd-pet| 〇〇&lt; rib | 00 CS 22.8 IL 3li 1 1 23.0 1 (N rn 1 291.9 I 03 Example 11丨cu a. Ifd-petJ 〇〇&lt;|Rib" | 22.5 I 32.2 1 14.6 J l〇ΓΛ 1 2848" The melting point of the resin of the resin core component of the CQ 13⁄4 component (°c) The MFR of the resin of the core component (g/l〇l min) 1 &gt; s rate G Forget φ2 w w The volume ratio of the resin core to the sheath of the sheath component is the content of titanium dioxide in the fiber (wt%) The amount of white powder fabric V^ Μ • tlh .· ηβΊ Who is the R value of 诗 Infrared transmittance (%) Visible light transmittance (%) UV transmittance (%) Air permeability (cm3/cm2/s) Friction-resistant melting HSS· ^ * # 4 <<. /.苢3 cups ♦ :Hwd,CH*«:«:Good:&lt;Η*«·&lt;0δ4: 3d* 201204888 jo/^pifl is the 100119119 Chinese manual without a slash correction. Amendment date: October 100 7th [Table 3] Example 25 Example 26 Example 27 Example 28 Core component resin PP PP PP PP core component resin melting point (°c) 142 142 142 142 core component resin MFR (g/10 min) 30 30 30 30 core component resin MVR ( cm3/l0 min ) 34 34 34 34 Resin FD-PET FD-PET FD-PET FD-PET Core to sheath volume ratio 1/6 1/6 1/6 1/6 Titanium dioxide in fiber Content ratio (wt%) 1.8 1.8 1.8 1.8 Cross-sectional shape of the fiber Triangular round circular single fiber fineness (dtex) 3.5 1.8 3.5 1.8 Extension yarn or false twist yarn extension yarn extension yarn false twist yarn false twist yarn white powder AAAA Tissue ribbed rib rib fabric per unit weight (g/m2) 267 300 254 276 R value ΓΟ 21.2 20.9 20.9 19.2 Infrared transmittance (%) 25.2 28.4 27.6 22.5 Visible light transmittance (%) 21.5 21.9 21.5 17.1 UV transmittance (%) 3.3 3.3 3.4 2.1 Air permeability (cm3/cm2/s) 256 248 195 142 Financial friction BBBB *PP: Polypropylene*FD-PET: PET with 2 wt% titanium dioxide 2012 04888 [inch&lt;] B iECsw-gl : step on mHr Fi 舔 Mfl-黯I ί 6 6 一一 0 0 一濉脉uusooe Example 40 | 〇3500 1 32100 u 17.3 |Example 39| 〇1—&lt; 1 2500 1 [22900 1 CQ I 16.4 | |Example 38| 1 210 1 1 3000 1 27500 U 26.1 1 |Example 37| P _ 1 3000 1 27500 | B to CI 21.8 | Example 36 〇V) rH 1 3000 1 27500 &lt; I 15.4 | |Example 35| 〇1 3000 1 27500 21.2 I [Example 34| 1 170 1 1 3500 1 1 32100 1 u 1 21.8 I | Example 33] ο 1 2500 1 22900 1 &lt; 14.9 1 |Example 32| 匕210 1 3000 1 27500 u 23.8 |Example 31| 1 3000 1 1 27500J 0Q 22.1 |Example 30| 1—Η 3000 1 27500 I &lt; 16.1 |Example 29| Ο r—^ 3000 27500” &lt; 20.4 False 捻 Temperature (°c) False 捻 (T/m) False 捻 coefficient white powder volume reduction ratio (%) 201204888^ mpifl Correction date: October 7th is the 10011&quot;71 Chinese manual without scribe correction# [Industrial Applicability] The core sheath of the present invention The composite fiber can effectively shield or absorb the sun's heat (g卩 infrared light) without damaging the texture of the fiber, _, step lion steady and false 捻 step _ good secret. Material, the amount of hair _ core composite: dimension = = knitted fabric is a woven fabric that is excellent in heat-blocking property of blocking light-heating, and is not particularly limited to the field of use, and is preferable for, for example, as a sportswear collar. ) : The original of the national costumes such as the Middle East and other hot regions = [Simple description of the diagram] No [Main component symbol description] None 31 201204888 38744pifl ^ For the Chinese manual No. 100119971, there is no slash correction. The revised period: 丨00年丨0月7曰Invention patent specification (The format and order of this manual, please do not change it anyway~Please do not fill in the ※ part) ※ Application No.: ※Application date: ※PC classification: , I. Invention name: (Chinese/English) * Core-sheath composite fiber, false twisted textured yarn containing homo-sheath composite fiber, method for producing the same, and fiber containing the same Weaving SHEATH-CORE COMPOUND FIBER, FALSE TWIST TEXTURED YARN COMPOSED THEREOF, METHOD FOR MANUFACTURING THE SAME, AND WOVEN KNIT FABRIC INCLUDING THE FIBER II. Abstract: The present invention provides a non-destructive fiber texture that blocks the radiant heat of the sun and spins A fiber having good stability in the yarn step and a false twisting step, and a woven fabric using the fiber to block radiant heat. The core-sheath composite fiber of the present invention comprises a station portion and a sheath portion 'and the core-sheath composite fiber contains titanium oxide 1 wt% to 3 wt% 'core portion with a resin having a refractive index a as a main component and a sheath portion having a refractive index B The resin is used as a component, and a and B satisfy the following formula (1), and the core composite fiber constitutes a woven fabric having a basis weight of 4 〇g/m 2 to 400 g/m 2 . |A—BjgO.Oi·.. ( 1) 1 201204888 38744pifl is the Chinese manual of No. 100119971. There is no slash correction. The date of this amendment: October 7th, 1st, 3rd, English Abstract: The present invention provides a fiber having Excellent stability in spinning process and excellent passing of the fiber in false twist yarn process; and a woven knit fabric blocking a radiation heat from the sun with use of the fiber without losing the texture of the fiber. The present invention provides a sheath-core Compound fiber having a center core and a sheath, and the sheath-core compound fiber includes 1 to 3% by mass of titanium dioxide. The core of the sheath-core compound fiber primary contains a resin having a refractive index A, and the sheath Of the sheath-core compound fiber primary contains a refractive index B. The sheath-core compound fiber, the refractive index A and the refractive index B, the following formula (1), and a woven knit fabric including the sheath compound fiber having a Fiber are a weight of 40 to 400 g/m . |AB|^0.01 (1) 201204888 38744pifl is the first deletion &quot;71#牧_书__财改咖叫州日七, application patent scope: 1. a composite fiber comprising a core portion and a sheath portion ′ and the core conjugate composite fiber containing 1-2% by weight of a oxidized capsule having a refractive index of A as a main component, the portion being A resin having a refractive index B as a main component, and A and B satisfy the following formula (1), |A - B|2〇.〇l·.. (1). 2· an annuclear composite fiber comprising a core portion and a portion, wherein the core-sheath composite fiber has a titanium oxide amount of wt% to 3 wt%, and the core portion has a thermal conductivity (W/mK) The resin of C is a main component, and the sheath portion has a resin having a thermal conductivity (W/mK) of D as a main component, and C&D satisfies the following formula (2), |CD|g〇.〇l.·· (2 The core-sheath composite fiber according to claim 2, wherein the main component of the core is a polyolefin resin, and the main component of the sheath is a polyester resin. The volume ratio of the core portion to the sheath portion is 1/2 to ιηο. 4. The core-sheath composite fiber according to claim 3, wherein the polyolefin resin is a polyethylene resin or a polypropylene resin. 5. The core-sheath composite fiber according to claim 4, wherein the polyolefin resin has a melting point of from 13 ° C to 180 ° C. 6. The core composite fiber according to claim 4 or 5, wherein the I® resin is a polyethylene terephthalate resin. 7. The core-sheath composite fiber according to claim 6, wherein the polyethylene terephthalate resin is polyethylene terephthalate satisfying the following formula (3) and formula (4) Ester resin ' 32 201204888. υ / τ-rpifl No Chinese painting No. 10011卯71 No picture! I line correction This revision date: 100 years 1 month 7 days 0.8^s^5... (3) 2^a ^l5... (4) wherein s and a are respectively the copolymerization ratio (_%) of the poly(p-phenylene) phthalic acid unit and Wei; 曰: copolymerization ratio of the aliphatic dicarboxylic acid (m〇 l%). The dimension of the core sheath composite fiber described in item 2 is the core of the core sheath composite fiber, and the melting point of the resin having a higher melting point in the resin of the minerals and the Ministry of the Ministry of Health is 25. The MVR (cm3/l〇 min) of the resin with a lower melting point at the temperature of €. 9. The core composite fiber according to claim 8, wherein the cross-sectional shape in a direction perpendicular to the fiber axis is triangular, tetragonal, hollow or Y-shaped. A core-sheath composite fiber according to claim 8, wherein the single fiber fineness is 3 dtex or less.捻 U. A false twisted textured yarn comprising the core-sheath composite fiber according to any one of claims 1 to 10. 12. A method for producing a false twisted textured yarn, which is a core-sheath composite fiber according to any one of claims 1 to 10, which satisfies the following conditions (6) to (8) False processing, (TL-20) ^TT&lt; (TL + 30)...(6) Κ$31〇〇〇...................... .............. (7) 〇. 1 cN/dtex $ TE $ 0.2 cN/dtex...(8 ) 33 201204888 38744pitl ^ For the 诵 号 Chinese ___ makeup makeup Date: _丨〇月7日, where TL represents the melting point of the resin having a lower melting point in the resin of the main component of the core portion and the sheath portion, ττ represents a false twist temperature, κ represents a false twist coefficient, TE represents the false twist tension. Further, the false twist coefficient is a coefficient expressed by the relationship between the fineness of the fiber processed by the false twist and the number of false twists, and is represented by the following formula: false twist coefficient = false Number of turns (t/m) X (denier of fiber (dtex &gt; 丨〇x 9) ία. 13. - woven fabric, which is a composite of cores as described in claim 1 or 2. Made of fiber, and the air permeability is 24〇〇1113/〇112/3~350 (:1113/.1112/3, single Weaving fabrics with an area weight of 220 §/1112 to 300 g/m2 and satisfying at least one of the following (E) and (F), (E) R value is 24 or less (F) Infrared transmittance is 32% or less Wherein the 'R value is a temperature rise value measured by a heat-insulation test. The woven fabric according to claim 13, wherein the content of the titanium dioxide in the fiber is 14 to 2 ( (wt%), the volume ratio of the core to the sheath portion is 1/2 to 1/1 〇. 15. - a woven fabric, which is any one of items 1 to 10 as claimed in the patent application. The core-sheath composite fiber according to the item is as follows: 16. The woven fabric of claim 15 has a basis weight of 40 g/m 2 to 4 〇〇 g/m 2 . The woven fabric of item 1-5, which is a double-sided fabric which is a core-sheath composite fiber as described in any one of the above-mentioned claims, wherein the core-sheath composite fiber is used as a yarn and/or a yam. 34 201204888^ / ττρίΐΐ For the Chinese manual No. 100119971, there is no slash correction. This revision period: October 7th, 1st, 18th. It is composed of a false twisted textured yarn as described in claim 11. The woven fabric of claim 18, which has a basis weight of 40 g/m2 to 400 g/m2. 20. The woven fabric of claim 18 or claim 19, which is woven with a false twisted textured yarn as described in claim 11 of the patent application as a * veil and/or a lining. Face fabric. 35 201204888 38744pifl For the Chinese manual No. 100119971, there is no slash correction. The date of this amendment: October 7 of the current year. 4. The designated representative map: (1) The designated representative of the case: No (2) A brief description of the symbol of the representative figure : No. 5. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: 3