JP2016180189A - Commingled yarn, suede tone woven or knitted fabric and method for producing suede tone woven or knitted fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suede tone woven or knitted fabric that has uniform fluffs on a surface thereof and excels in see-through preventing properties, surface quality, and skin touch feeling.SOLUTION: There is provided a core-sheath type commingled yarn obtained by commingling at least two kinds of polyester filaments A and B. The polyester filament A constituting the core portion has a boiling water shrinkage percentage of 15% or more. The polyester filament B constituting the sheath portion is an island-in-sea type polyester filament whose island component polymer contains 4.0 to 10.0 wt.% of titanium oxide fine particles.SELECTED DRAWING: None

Description

    The present invention relates to a mixed yarn composed of at least two kinds of polyester filaments and a suede knitted fabric using the same.

    Suede knitted fabric using polyester filament yarn has a good texture and can be easily cleaned as compared with natural leather, and has been used for a wide range of casual, formal and sports clothing. The suede knitted fabric requires a raising process to cut the filaments on the fabric surface, but it is difficult to raise the fiber surface uniformly, and improving the surface quality unevenness after raising is a long-standing issue of suede woven fabrics Met.

    In order to solve this problem, a polyester blended yarn characterized by having a talmi in a part of the sheath yarn and having a stretch / elongation rate of 10% or more after heat treatment under load has been proposed, Suede-like texture is obtained, but surface quality unevenness that occurs after raising is not considered at all (Patent Document 1).

    In addition, a fine composite thread that can be made thin as a low shrinkage thread and a fine composite thread that does not have a thick spot as a high shrinkage yarn are mixed, and the fine thread is opened by the fine thickness spot. A method for improving the fineness / dispersion has been proposed, but merely improving the opening property of the ultrafine yarn is insufficient to make the surface quality generated after raising the hair even (Patent Document 2). ).

JP 2007-197864 A JP 2003-171836 A

    Conventionally used suede knitted fabrics have difficulty in raising the fiber surface uniformly, and improving surface quality unevenness after raising has been a long-standing problem for suede knitted fabrics.

    An object of the present invention is to provide a woven or knitted fabric that can obtain a suede-like woven fabric having uniform fluff on the surface of a woven or knitted fabric that could not be obtained in the past, and that has good anti-penetration properties, surface quality, and touch. It is in.

In order to solve the above problems, it is necessary to raise the fiber surface uniformly. As a result of intensive studies, the present inventors have found that the above-described problems can be solved by the following invention. That is,
A core-sheath type mixed yarn in which at least two kinds of polyester filaments A and B are mixed, and the polyester filament A constituting the core part has a boiling water shrinkage of 15% or more and constitutes the sheath part. The polyester filament B is a mixed yarn in which the island component polymer is a sea-island type polyester filament containing 4.0 to 10.0% by weight of titanium oxide fine particles.

And there exists the following invention using the said mixed fiber. That is,
A woven or knitted fabric using the blended yarn, a suede knitted knitted fabric having a raised knitted fabric surface, and weaving or knitting using the blended yarn, deseaming the sea component of the filament B, It is a manufacturing method of the suede knitted fabric which has the process of raising in order.

    INDUSTRIAL APPLICABILITY The present invention can provide a suede-like knitted fabric having uniform fluff on the surface of a woven or knitted fabric that could not be obtained conventionally, and can also provide a woven or knitted fabric excellent in anti-penetration property, ultraviolet shielding property, and mat feeling. .

    The present invention is a mixed yarn in which at least two kinds of polyester filaments A and B are mixed, and the polyester filament A constituting the core portion has a boiling water shrinkage of 15% or more.

  By making the boiling water shrinkage of the polyester filament A constituting the core portion 15% or more, the sheath polyester filament B of the blended yarn is made bulky and can be raised.

    When the boiling water shrinkage of the polyester filament A is less than 15%, the sheath portion of the blended yarn cannot be sufficiently bulky, and it is difficult to generate fluff by raising. The boiling water shrinkage of the polyester multifilament A is more preferably 15% to 30%. When the boiling water shrinkage of the polyester filament A is too high, the texture tends to be hard.

  Polyesters of the polyester filaments A and B of the present invention include polyalkylene terephthalate, polyalkylene phthalate, etc. Among them, the former terephthalic acid is the main acid component, and the alkylene glycol component having 2 to 6 carbon atoms, that is, ethylene. Polyester having at least one glycol selected from glycol, trimethylene glycol, tetramethylene glycol, pentamethylene glycol and hexamethylene glycol as the main glycol component is preferred. By using polyester in which a third component such as isophthalic acid is copolymerized with the polyester multifilament A, it is possible to obtain high shrinkage characteristics.

    Moreover, it is preferable that the single filament fineness of the polyester filament A is 1-10 dtex from the point which provides moderate elasticity to a woven or knitted fabric. If the fineness is too small, the elasticity tends to be insufficient. If it is too thick, the core is exposed on the surface of the woven or knitted fabric, and the surface quality tends to be lowered. Further preferable polyester filament A has a single fiber fineness of 2 to 8 dtex.

    Further, the total fineness of the polyester multifilament A is preferably 10 dtex or more and 100 dtex or less from the viewpoint of achieving both firmness and surface quality as in the case of the single fiber fineness.

  The polyester filament B constituting the sheath is a sea-island polyester filament in which the polymer is a sea-island type, and the island component polymer contains 4.0 to 10.0% by weight of titanium oxide fine particles.

    When the island component polymer of the polyester filament B contains 4.0 to 10.0 wt% of titanium oxide fine particles, the titanium oxide fine particles of the island component polymer drop off during sea removal processing, and the strength can be reduced. . Due to this effect, the single yarn is separated, and fluff can be generated uniformly by raising. Furthermore, by containing the titanium oxide fine particles in a high amount, even in a thin woven or knitted fabric, the see-through property can be improved. When the titanium oxide fine particles are less than 4.0% by weight, the effect of removing the fine particles is small, and fluff cannot be uniformly generated by raising. When the content exceeds 10.0% by weight, there is a problem that the fine particles fall off, the strength of the fluff is weakened, and the fluff in the woven or knitted fabric is easily removed. The titanium oxide fine particle content is preferably 5.0% by weight or more and 9.0% by weight or less, and more preferably 6.0% by weight or more and 8.0% by weight or less.

    On the other hand, the sea component polymer of the polyester filament B of the present invention is preferably soluble in a liquid, and more preferably soluble in an alkaline aqueous solution. Such a polymer is preferably polyethylene terephthalate copolymerized with 1.5 mol% or more and 7.0 mol% or less of a 5-sodium sulfoisophthalic acid component. Since the sea component polymer of the sea-island type polyester composite fiber, which is polyester filament B, needs to have a higher alkali weight loss rate than the island component polymer, polyethylene terephthalate copolymerized with 1.5 mol% or more of 5-sodium sulfoisophthalic acid component is used. It is preferable. In addition, since the sea component polymer forms the fiber surface of the sea-island type composite fiber, it is necessary to have a strength to maintain stable process passability. If the amount of 5-sodium sulfoisophthalic acid is excessively increased, the yarn strength is increased. In order to reduce, 7.0 mol% or less is preferable. The copolymerization amount of 5-sodium sulfoisophthalic acid is preferably 2.0 mol% or more and 6.0 mol% or less, more preferably 3.0 mol% or more and 5.0 mol% or less.

    The mass ratio of the sea component / island component of the polyester filament B of the present invention is preferably 10/90 to 50/50 from the viewpoints of the stability of the composite form, yarn-making property, and productivity. When the ratio of the sea component is low, a composite abnormality occurs and a division failure occurs, or even if the dispersion form is normal, a division failure due to a poor dissolution of the sea component is likely to occur. On the contrary, when the ratio of the sea component exceeds 50%, the productivity is lowered and it is difficult to obtain a raised feeling in the woven or knitted fabric. The mass ratio of the sea component / island component of the polyester filament B is more preferably 20/80 to 30/70.

    Moreover, it is preferable that the single yarn fineness after the seawater removal processing of the polyester filament B of the present invention is 0.05 to 0.25 dtex because it tends to be suede-like texture after raising. If the single yarn fineness is too small, the single yarn is likely to be aggregated and the quality after raising tends to decrease. Moreover, when the single yarn fineness is too large, it tends to be difficult to obtain a suede-like texture. More preferably, it is 0.08-0.20 dtex.

    In addition, it is preferable that the strength of the polyester filament B of the present invention after seawater removal is 0.25 cN / dtex or less because the filament can be easily cut by napping and fluff can be generated uniformly. When the strength is too small, the strength of the fluff is weakened, and the fluff in the woven or knitted fabric tends to come off easily. On the other hand, if the strength is too high, the filaments are likely to be caught by the raising process, and the raising unevenness tends to occur. More preferably, it is 0.15-0.25 cN / dtex.

    It is preferable that the fiber surface of the polyester filament B after sea removal processing has microvoids. In order to form microvoids on the fiber surface of the polyester filament B, it is preferable to perform weight reduction processing such as alkali treatment. Microvoids that may be reduced after the weight reduction process at the fiber stage, or may be reduced after the fabric has been processed. The titanium oxide fine particles contained in the island components fall off by reducing the weight such as alkali treatment. Therefore, although a concave portion is formed, since the surface of the polyester filament B is covered with the sea component and the surface of the island component is gradually reduced, a very fine microvoid can be formed.

  Even if the ultrafine fiber obtained by spinning a single island component polymer used in the present invention is alkali-reduced, the weight reduction starts all over the fiber surface, making it difficult to form very fine recesses. Spinning with a single polymer is not highly recommended.

    Further, as the polyethylene terephthalate of the island component of the polyester filament A and the polyester filament B of the present invention, a polyester comprising terephthalic acid as a main acid component and ethylene glycol as a main glycol component, and 90 mol% or more of a repeating unit of ethylene terephthalate. Can be used. However, it may contain a copolymerization component capable of forming another ester bond within a range not inhibiting the effects of the present invention. Examples of copolymerizable compounds include dicarboxylic acids such as isophthalic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, and sebacic acid, while glycol components include, for example, ethylene glycol, diethylene glycol, butanediol, neopentyl glycol, and cyclohexanedi Examples thereof include, but are not limited to, methanol, polyethylene glycol and polypropylene glycol. The polyester multifilament A can obtain a high shrinkage property by using a polyester in which a third component such as isophthalic acid is copolymerized.

    The cross sections of the polyester multifilaments A and B of the present invention are round, triangular, flat, hexagonal, L-shaped, T-shaped, W-shaped, eight-leaf shaped, dog-bone shaped, etc. The type can be arbitrarily selected.

    In the present invention, the fineness of the mixed yarn is preferably 200 dtex or less in consideration of the lightweight feeling of the fabric, and preferably 50 dtex or more in consideration of the wall thickness and the fabric strength.

  In the mixed yarn of the present invention, in addition to the polyester filaments A and B, filaments other than the polyester filaments A and B may be mixed.

    The woven or knitted fabric of the present invention is not limited by specifications such as the woven and knitted fabric and density of the woven and knitted fabric that are generally used. Moreover, as long as the effect of the present invention is not hindered, those subjected to blending with natural fibers such as rayon and wool, knitting, knitting, knitting, and the like are included, but are not limited thereto.

    Next, the manufacturing method of the mixed fiber of this invention is demonstrated.

  First, when the polyester filament A and the polyester filament B of the present invention are produced, the process can be applied to any process such as a method in which spinning and drawing steps are continuously performed, and a method in which the yarn is once wound as an undrawn yarn and then drawn. For example, there is a method in which the spun yarn is taken up at 600 m / min to 5000 m / min, and subsequently drawn and heat-set at 3000 m / min to 6000 m / min.

    In addition, as a method of mixing the polyester filament A and the polyester filament B, any mixed fiber means such as a twisted twisted yarn, interlace processing, and taslan processing can be used. Preferably, an interlace in which a uniform loop is formed. It is processing.

  At this time, in order to give strong entanglement to the yarn and considering the cost, the entanglement pressure is preferably 0.1 to 0.5 (MPA).

  The higher the yarn processing speed, the higher the productivity, which is preferable. However, in consideration of the stable processability, 200 to 1000 (m / min) is preferable.

    The mixed yarn of the present invention thus produced is made into a woven fabric or a knitted fabric using a known weaving method or knitting method. Any known structure can be applied as the woven or knitted structure.

    In the present invention, the woven fabric and the knitted fabric are collectively referred to as “woven fabric”. The woven or knitted fabric of the present invention is not limited by the structure or density.

    The mixed yarn applied to the present invention is used for either warp or weft. The satin-based structure that is often used for raised products is suitable for the fabric structure to be applied, and it is preferable to determine in consideration of the texture, surface quality, and the like. Basically, it is preferable that the raised surface side has a form of three or more floats.

    The looms used for weaving can be employed without any particular limitation as the types of commonly used ordinary looms, rapiers, water jet rooms, air jet rooms, and the like. Among these, an air jet room that does not apply excessive tension to the weft is preferable.

    In knitting, a commercially available knitting machine such as a circular knitting machine, a tricot machine, or a raschel machine can be used. When the blended yarn of the present invention is used for at least a part of a knitting yarn, it is necessary to perform knitting while optimizing each tension. Even if weaving is performed with a composition ratio of the above-described mixed yarn of about one in three, suede-like surface touch can be sufficiently exerted. As the knitting structure, any design such as a tengu, smooth, punch, rib and half structure can be used.

    Next, the dyeing process will be described. The dyeing process can be performed according to the dyeing process and conditions of a general polyester filament knitted fabric. Among them, in order to sufficiently exhibit suede touch and rebound feeling with excellent surface quality, it is preferable that the relaxation heat treatment imparts a fir effect to the fabric by a high-temperature and high-pressure liquid relaxation process at 120 ° C. or higher.

    In addition, it is preferable that the set temperature is 170 ° C. or higher and 230 ° C. or lower in order to increase the alkali weight loss resistance of the mixed yarn during intermediate setting. If the temperature exceeds 230 ° C., the sheath may be fused, which is not preferable.

    In the present invention, it is preferable to perform alkali weight reduction on the woven or knitted fabric as the sea removal step.

  As the weight loss, it is preferable to remove all the sea components, and it is preferable to reduce the weight within a range within 10% by weight of the sea component composite ratio relative to the fiber weight. For example, the fiber may be immersed in a 10 to 90 ° C. aqueous sodium hydroxide solution (NAOH: 0.1 to 10 g / L). In addition, a publicly known method and apparatus can be adopted as alkali weight reduction.

    For raising the surface to obtain a suede-like surface touch, sanding (buffing) and knitting are generally used as methods. In order to express a suede-like woven or knitted fabric having uniform fluff on the surface of the woven or knitted fabric which is the object of the present invention, a needle cloth raising process is preferable.

    The mixed yarn and woven or knitted fabric obtained by the present invention have been widely used as clothing from casual to formal and sports clothing. In particular, it is suitably used for suede knitted knitted fabrics such as suits for women's clothing, blazers, coats, skirts, pants, and further, outerwear and bottoms for gentlemen.

    Hereinafter, the present invention will be described more specifically with reference to examples.

(1) Boiling water shrinkage rate The polyester filament A is taken out from the blended yarn every 6 cm and used as a sample. Samples marked at 5 cm intervals under a load of 0.1 g / dtex are wrapped in gauze and heat treated with boiling water at 100 ° C. for 30 minutes under no tension. Thereafter, the sample was taken out, air-dried at 35 ° C. and 60% RH for 24 hours, and again, after the developed crimp was completely extended under a load of 0.1 g / dtex, the marked interval before heat treatment (L) And the boiling water shrinkage of the polyester filament A is expressed by the following formula.

  Boiling water shrinkage (%) = {(5-L) / 5} × 100.

(2) Elongation It measured based on JIS-L-1013 (2004).

(3) Yarn strength after sea removal After the mixed yarn was subjected to sea removal processing and decomposed into polyester filaments A and B, the yarn strength was measured based on JIS-L-1013 (2004).

(4) Permeability The transmittance of 5 woven and knitted fabric samples of 5 cm × 5 cm was measured using an SM color computer model SM-3 (manufactured by Suga Test Instruments Co., Ltd.), and evaluated with an average value (n = 5). ).

◎: Transmittance less than 4% ○: Transmittance 4% or more and less than 7% Δ: Transmittance 7% or more and less than 10% ×: Transmittance 10% or more

(5) Surface quality evaluation In the surface quality of the woven or knitted fabric created in the examples, the surface of the woven or knitted fabric has a fine and uniform fluff, and particularly has a clean surface feeling ◎, and has a uniform fluff. Evaluation of 10 people selected at random, with ○ having a clean surface feeling, △ with slightly brushed unevenness on the surface, and × with many brushed unevenness on the surface The result was close to average.

(6) Surface touch evaluation In the surface touch of the woven or knitted fabric created in the examples, ◎ indicates that the material has a natural furano-like delicate suede touch, ○ indicates that the touch is close to suede, ○ The characteristic having a touch close to the average of the evaluations of 10 people selected at random was evaluated as Δ with a touch having a touch, and a cross having a touch that felt a lot of fukuroki.

(7) Intrinsic viscosity A value obtained by dissolving 0.8 g of a sample polymer in 10 ml of orthochlorophenol (hereinafter abbreviated as OCP) and calculating a relative viscosity [ηr] by using the Ostwald viscometer at 25 ° C. (IV) It is.

Relative viscosity [ηr] = η / η0 = (t × q) / (t0 × q0)
Intrinsic viscosity [IV] = 0.0242 ηr + 0.2634
Where η: viscosity of the polymer solution, η0: OCP viscosity, t: solution drop time (seconds), q: solution density (g / cm ³ ), t0: OCP drop time (seconds), q0: OCP Density (g / cm ³ ).

<Example 1>
Polyethylene terephthalate copolymerized with 8 mol% of isophthalic acid was spun at a spinning speed of 1700 (m / min), and then subjected to a drawing heat treatment at 130 ° C. and a draw ratio of 2.4, and a total fineness of 33 dtex, 6 filaments, boiling water shrinkage rate 25% polyester filament A was obtained.

  On the other hand, polyethylene terephthalate containing 9.0% by weight of titanium oxide fine particles as the island component and polyethylene terephthalate copolymerized with 3.0 mol% of 5-sodiumsulfoisophthalic acid as the sea component were separately melted at 290 ° C. In order to form the shape, it was poured into the base of 8 islands. The mass ratio of the sea / island component was 20/80. Winding was performed at a spinning speed of 1500 m / min and drawn at a draw ratio of 2.5 to obtain eight islands-type polyester filaments B of 66 dtex-36 filaments.

Polyester filament A and polyester filament B were interlaced at a processing speed of 300 m / min and a pneumatic pressure of 2 kgf / cm ² using Aiki Seisakusho AT-501 machine to obtain a mixed yarn.

    The mixed yarn thus obtained is subjected to additional twisting at 800 T / m in the S direction using a double twister twisting machine made by Murata Co., Ltd., and then a steam twisting set at 75 ° C. for 30 minutes. And used for woven warp.

    A low-viscosity component consisting of 100% polyethylene terephthalate having an intrinsic viscosity of 0.475 and a high-viscosity component consisting of 100% polyethylene terephthalate having an intrinsic viscosity of 0.780 are bonded to a weft in a parallel mold at a mass ratio of 50:50. In addition, a conjugated multifilament yarn of 56 dtex-12 filament was used.

    Using these warp yarns and weft yarns, an air jet loom was used with a five-sheet satin structure and woven at a raw machine density (warp yarn: 222 yarns / inch, weft yarn: 97 yarns / inch).

  Next, the obtained woven fabric was subjected to continuous scouring at 98 ° C., followed by 130 ° C. liquid flow relaxation treatment and intermediate setting at 180 ° C. Then, it was immersed in 1 mass% caustic soda aqueous solution, and the sea removal process was implemented. The obtained fabric was subjected to raising with a needle cloth raising machine, and then a 160 ° C. finishing set was applied to obtain a product.

    The obtained product had a fine and uniform fluff on the fabric surface, a particularly beautiful surface feeling, and a delicate suede touch. And it was white and was especially excellent in permeation resistance.

<Example 2>
Polyethylene terephthalate copolymerized with 4 mol% of isophthalic acid was spun at a spinning speed of 1700 (m / min), and then subjected to a drawing heat treatment at 130 ° C. to obtain a polyester filament A having a total fineness of 56 dtex, 24 filaments and a boiling water shrinkage of 17%. A mixed yarn was obtained in the same manner as in Example 1 except that a woven fabric was prepared and further a product was obtained.

    The obtained product had dense and uniform fluff on the surface of the fabric, had a particularly beautiful surface feeling, and had a touch close to suede. And it was white and was especially excellent in permeation resistance.

<Example 3>
Polyethylene terephthalate containing 4.5% by weight of titanium oxide fine particles as the island component and polyethylene terephthalate copolymerized with 3.3 mol% of 5-sodium sulfoisophthalic acid as the sea component were separately melted at 290 ° C. Was made to flow into the caps of 60 islands. The mass ratio of the sea / island component was 20/80. Winding was performed at a spinning speed of 1500 m / min, and the film was drawn at a draw ratio of 2.5, and sea island type polyester filaments B of 60 islands of 66 dtex-9 filaments were used. Otherwise, a mixed yarn was obtained in the same manner as in Example 1, a woven fabric was prepared, and a product was further obtained.

    The obtained product had uniform fluff on the surface of the fabric, had a clean surface feeling, and had a delicate suede touch. And it was white and was especially excellent in permeation resistance.

<Example 4>
A blended yarn is obtained in the same manner as in Example 3, and is knitted in a tengu structure using a 28G single circular knitting machine. And got more products.

    The obtained product had uniform fluff on the surface of the knitted fabric, had a beautiful surface feeling, and had a delicate suede touch. And it was white and was especially excellent in permeation resistance.

<Comparative Example 1>
Polyethylene terephthalate was spun at a spinning speed of 1700 (m / min) and then subjected to drawing heat treatment at 130 ° C., and polyester filament A having a total fineness of 33 dtex, 6 filaments and a boiling water shrinkage of 12% was used. Otherwise, a mixed yarn was obtained in the same manner as in Example 1, a woven fabric was prepared, and a product was obtained.

  The obtained product was white and particularly excellent in permeation resistance, but it had brushed unevenness with exposed core yarn on the surface, and had a slightly soft touch.

<Comparative example 2>
Polyethylene terephthalate containing 3.5% by mass of titanium oxide fine particles as the island component and polyethylene terephthalate copolymerized with 3.3 mol% of 5-sodiumsulfoisophthalic acid as the sea component were separately melted at 290 ° C. to obtain a sea-island type composite form. I made it flow into the base of 8 islands to form. The mass ratio of the sea / island component was 20/80. A mixed yarn was obtained in the same manner as in Example 1 except that winding was performed at a spinning speed of 1500 m / min, and drawing was performed at a draw ratio of 2.5 to obtain 8 islands of sea island type polyester filaments B of 66 dtex-36 filaments. Fabrics were made and further products were obtained.

    The obtained product had a touch close to a suede, but there was a brushed unevenness in which there were a lot of fluff and a few on the fabric surface. In addition, the white permeability was insufficient.

<Comparative Example 3>
Polyethylene terephthalate containing 12% by mass of titanium oxide fine particles as the island component and polyethylene terephthalate copolymerized with 3.3 mol% of 5-sodium sulfoisophthalic acid as the sea component are separately melted at 290 ° C. to form a sea-island type composite form. I flowed into the base of 8 islands. The mass ratio of the sea / island component was 20/80. Winding was carried out at a spinning speed of 1500 m / min, drawn at a draw ratio of 2.5, and 8 islands of sea island type polyester filament B of 66 dtex-36 filament was used. Otherwise, a mixed yarn was obtained in the same manner as in Example 1, a woven fabric was prepared, and a product was obtained.

    The obtained product was white and particularly excellent in permeation resistance, but fluffing off the fluff occurred on the surface, resulting in deterioration in surface quality and touch.

<Comparative example 4>
Polyethylene terephthalate containing 6% by mass of colloidal silica as an island component and polyethylene terephthalate copolymerized with 3.3 mol% of 5-sodium sulfoisophthalic acid as sea components are separately melted at 290 ° C. to form a sea-island type composite form. It was allowed to flow into the eight island caps. The mass ratio of the sea / island component was 20/80. Winding was carried out at a spinning speed of 1500 m / min, drawn at a draw ratio of 2.5, and 8 islands of sea island type polyester filament B of 66 dtex-36 filament was used. Otherwise, a mixed yarn was obtained in the same manner as in Example 1, a woven fabric was prepared, and a product was obtained.

    The obtained product had a raised unevenness in which there were a lot of fluff and a few on the surface of the fabric, and the touch also had a strong touch. Moreover, the white permeability was insufficient.

<Comparative Example 5>
A polyethylene terephthalate containing 4.5% by mass of titanium oxide fine particles was melted at 290 ° C., wound up at a spinning speed of 1500 m / min, and drawn at a draw ratio of 2.5 to obtain a polyester filament B of 66 dtex-2288 filament. Obtained a mixed yarn in the same manner as in Example 1. Thereafter, a woven fabric was prepared in the same manner as in Example 1 except that sea removal processing was omitted, and a product was obtained.

    The obtained product was white and particularly excellent in permeation resistance, and had a touch close to suede, but there were many uneven brushing where there were many fuzzy parts and few parts on the fabric surface. It was.

Claims (4)

A sheath-core type mixed yarn in which at least two types of polyester filaments A and B are mixed,
The polyester filament A constituting the core part has a boiling water shrinkage of 15% or more, and the polyester filament B constituting the sheath part contains 4.0 to 10.0% by weight of titanium oxide fine particles in the island component polymer. A mixed yarn that is a sea-island type polyester filament.   2. The mixed yarn according to claim 1, wherein the single filament fineness of the polyester filament B after sea removal is 0.05 to 0.25 dtex and the strength is 0.25 cN / dtex or less.     A suede-like knitted knitted fabric in which the surface of the woven or knitted fabric is raised, which is a woven or knitted fabric using the mixed yarn according to claim 1 or 2. A method for producing a suede-textured knitted fabric, which comprises steps of weaving or knitting using the mixed fiber according to claim 1, deseaming the sea component of the filament B, and raising.