JP2012112071A - Woven or knitted fabric and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a woven or knitted fabric having fibril feeling of silk tone, squeaky feeling, dry feeling and deep glossy feeling, and also having excellent antistatic characteristics and fabric strength.SOLUTION: The woven or knitted fabric for woman clothing includes a polyester-based fiber in which a plurality of stripe-like grooves are formed in a fiber axial direction in a surface layer, and cavities each having a diameter of 0.1-5 μm, independent of the grooves, are discontinuously disposed in a fiber length direction in the interior, the cavities existing at a ratio of 1-300 pcs. per horizontal fiber cross section. A part of a surface of the polyester-based fiber of the woven or knitted fabric is formed by fibrillation.

Description

  The present invention relates to a woven or knitted fabric suitable for women's clothing and the like, and has a silky fibrillar texture and a squeaky feeling, and also has a dry feeling and a deep gloss feeling, and has excellent antistatic properties and fabric Excellent appearance quality with strength.

As a luxury item of women's clothing material, there are a wide variety of technologies to express the fibrillar texture, which is a feature of the silk material that is positioned, and the polyester fiber, and the fibrillar texture and the kissimi texture. A close one has been obtained. As a method for obtaining a fibrill feel with polyester fiber, weaving and calendering of woven or knitted fabric made of polyester blended with polyester polymer and incompatible long-chain organic compound and / or organic sulfonic acid metal salt, etc. And a method of forming a fibtil by combining an alkali treatment is disclosed (Patent Document 1 Patent 2962992). However, although a silky fibrillar texture can be obtained, there is a problem that the woven or knitted fabric is inferior in quality due to streaky spots. In addition, since it is a polyester fiber, the surface friction resistance is increased by fibrillation, and the fiber is broken and divided by the problem of clinging and dust adhesion due to static electricity, pressurization with a calendar, and alkali weight loss. / m ² at the time of following thin cloth material deployment, there may not be obtained on adequate strong wear.
In addition, woven and knitted fabric made of polyester fiber blended with organic sulfonic acid metal salt reduces alkali by 10% or more, fibrillates the fiber surface, forms voids inside the fiber, and feels dry, slimy, and absorbs water. It is disclosed that the fabric which has is obtained (patent document 2 patent 3194464). However, it is troublesome as a dyeing process that must be impregnated and coated with an alkali weight loss accelerator, lack of fibrillation when the weight loss rate is less than 10%, and similar problems of adhesion and dust adhesion due to fibbling, and weight per unit. There was a possibility that sufficient strength in wearing could not be obtained when developing a thin material of 100 g / m ² or less.
It is disclosed that better antistatic properties can be obtained than blending polyether ester amide antistatic agents as antistatic clinging and dust adhesion prevention (Patent Document 3 Publication 2010-138528). However, it has been difficult to obtain a deep gloss feeling and a fibile texture and a feeling of squeak that are required as a material for women's clothing.

Japanese Patent No. 29629992 Japanese Patent No. 3194464 Published 2010-138528

In view of the background of such conventional technology, the present invention has a silky fibrillar texture and a squeaky texture, and also has a dry texture and a deep glossiness, and has excellent antistatic properties and fabric strength. Provided is a woven or knitted fabric excellent in appearance quality.

In order to solve the above problems, the present invention has the following configuration.
(1) A plurality of streak-like grooves are formed in the fiber surface layer in the fiber surface layer, and voids having a diameter of 0.1 μm to 5 μm independent of the fiber surface groove are discontinuous in the fiber length direction inside the fiber. And a woven or knitted fabric containing polyester fibers having a ratio of 1 to 300 per cross section of the transverse fibers, wherein a part of the surface of the polyester fibers is fibrillated. Woven and knitted fabric.
(2) The polyester fiber described above, wherein the antistatic agent shown in the following requirements (1) and (2) is contained in a proportion of 1.5% by weight or more and less than 2.5% by weight with respect to the fiber weight. (1) The woven or knitted fabric described.

  (1) (A) Polyether ester amide obtained by reacting (B) poly (alkylene oxide) glycol and (C) dicarboxylic acid, at least one selected from (A) aminocarboxylic acid, lactam and diamine and dicarboxylic acid salt The polyether ester unit in the polyether ester amide is 30 to 70% by weight.

  (2) An antistatic agent comprising 100 parts by weight of the polyetheresteramide and 2 to 20 parts by weight of a sulfonic acid metal compound.

(3) The above-mentioned (1) or (1), wherein the cross-sectional shape of the polyester fiber is a multilobal shape having 3 or more protrusions, and has an irregularity of 1.5 or more and less than 2.0 The woven or knitted fabric described in (2).
(4) The apparel woven or knitted fabric according to any one of (1) to (3) above, wherein the frictional voltage defined in JIS L 1094 is 3000 V or less.
(5) The polyester fiber according to the above (1) is a woven fabric in which all the warp yarns and / or all the weft yarns are arranged alone, and the tear strength specified in JIS L 1096 is the arrangement of the polyester fiber. The garment fabric according to any one of claims 1 to 4, wherein the woven fabric is 4.9 N or more and has a basis weight of 100 g / m ² or less and 40 g / m ² or more.
(6) After a continuous pressure treatment at a treatment temperature of 120 ° C. to 190 ° C. and a linear pressure of 100 kg / cm or more, it is obtained by an alkali weight loss treatment, and the alkali weight loss rate is 5% to the fiber weight of the woven or knitted fabric. 40. The method for producing a woven or knitted apparel according to any one of (1) to (5) above, wherein the content is 40%.

According to the present invention, the fibrillation of polyester-based fibers has a silky fibril texture and a kisimi texture, which are required as the sensibility characteristics of women's clothing materials, and also has a dry texture and deep gloss. It is possible to provide a knitted or knitted fabric excellent in fabric strength and physical properties, which prevents the clinging caused by static electricity and dust adhesion prevention function, and the fibrillated thin fabric material has no problem in actual wearing.
Furthermore, it is possible to manufacture with dyeing processing equipment and processing steps used in general polyester fiber woven and knitted fabrics, and obtain woven and knitted fabrics having the above-mentioned sensitivity characteristics, functions and physical properties without impairing the appearance quality. be able to.

It is a fiber side surface of an example of the polyester fiber of the women's clothing knitted fabric of the present invention. It is a fiber cross section of an example of a polyester fiber of the women's clothing knitted fabric of the present invention. It is an example of the fiber surface of the women's clothing woven or knitted fabric of the present invention.

The women's apparel woven or knitted fabric of the present invention is formed of polyester fiber, part or all of the woven or knitted fabric, and the polyester fiber has a plurality of streak-like grooves in the fiber axis direction as shown in FIG. As shown in FIG. 2, the inside of the fiber has voids with a diameter of 0.1 μm to 5 μm, which are independent of the grooves on the fiber surface layer, discontinuously in the fiber length direction, and the voids have a transverse fiber cross section. It has a ratio of 1 to 300 per hit.
Moreover, as shown in FIG. 3, a part of the polyester fiber surface of the woven or knitted fabric is fibrillated.
In the present invention, the fiber surface is fibrillated, and a plurality of streak-like grooves are formed in the fiber axis direction existing in the fiber surface layer, thereby giving a silky fibril texture and a kishimi texture.
A void having a diameter of 0.1 μm to 5 μm, which is independent from the groove on the fiber surface layer inside the fiber, is discontinuous in the fiber length direction, and the void forms 1 to 300 per transverse fiber cross section. This contributes to a deep gloss feeling, further fibrils, and a kishimi texture, and gives a fabric strength that causes no problem in actual wearing.
If the diameter of the gap is less than 0.1 μm, a deep glossy feeling cannot be obtained, and if it exceeds 5 μm, it is difficult to form gaps in the fiber length direction discontinuously, and the fabric strength is reduced. Similarly, even when the number of voids per cross section of the transverse fiber is 300 or more, it is not possible to obtain a fabric strength having no practical problem.
Polyester fibers constituting the women's woven fabric in the present invention are aromatic polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate and polybutylene terephthalate, and aromatic polyester fibers obtained by copolymerizing aromatic polyester with a third component, Polyester fibers such as aliphatic polyester fibers represented by L-lactic acid as a main component are preferable. Such a polyester may be produced by an arbitrary method. For example, polyethylene terephthalate can be described by directly esterifying terephthalic acid and ethylene glycol, or lower alkyl ester of terephthalic acid such as dimethyl terephthalate and ethylene glycol. Of the terephthalic acid and ethylene oxide to form a glycol ester of terephthalic acid and / or a low polymer thereof, and then the product is heated under reduced pressure to obtain a desired degree of polymerization. It is easily produced by a condensation polymerization reaction until In this polyester, a part of the terephthalic acid component may be replaced with another bifunctional carboxylic acid component. Examples of such carboxylic acids include bifunctional aromatic carboxylic acids such as isophthalic acid, phthalic acid, dibromoterephthalic acid, naphthalene dicarboxylic acid, diphenylxyentanecarboxylic acid, β-oxyethoxybenzoic acid, sebacic acid, adipic acid, Bifunctional aliphatic carboxylic acids such as oxalic acid, bifunctional alicyclic carboxylic acids such as 1,4-cyclohexanedicarboxylic acid and the like can be mentioned. Further, a part of the glycol component may be replaced with another glycol component. Examples of the glycol component include cyclohexane-1,4-dimethanol, neopentyl glycol, bisphenol A, bisphenol S, 2,2-bis [3 , 5-dibromo-4- (2-hydroxyethoxy) phenyl] propane, and aliphatic, alicyclic and aromatic diols. Further, the above-described polyester may be obtained by blending and melting a small amount of another polymer as necessary, or by using a small amount of a chain branching agent such as pentaerythritol, trimethylolpropane, or trimellitic acid. In addition to the pigments such as titanium oxide and carbon black, the polyester of the present invention may be added with conventionally known antioxidants and anti-coloring agents in the same manner as ordinary polyesters.
Examples of the polymer used as an antistatic agent in the present invention include polyalkylene ethers (polyalkylene oxides) such as condensation products of ethylene oxide and propylene oxide, or condensation products of both, and polyalkylene oxide components, aminocarboxylic acids, and lactams. , Block copolymer such as polyether amide, polyether ester or polyether ester amide, which is a compound obtained by reacting diamine, dicarboxylic acid or dicarboxylic acid ester. Of these, polyether ester amide is preferable.
Examples of the polyether ester amide include (A) at least one selected from aminocarboxylic acids, lactams and diamines and dicarboxylic acid salts, which are constituent components, all of which preferably have 6 or more carbon atoms, more preferably Examples of the aminocarboxylic acid include ω-aminocaprylic acid, ω-aminoberconic acid, ω-aminocaproic acid, 11-aminoundecanoic acid, 12-aminododecanoic acid, and the like. Examples of the salt of diamine-dicarboxylic acid include hexamethylenediamine-adipate, hexamethylenediamine-sebacate, hexamethylenediamine-isophthalic acid, and the like. Of these, caprolactam, 1,2-aminododecanoic acid, and hexamethylenediamine-adipate are particularly preferably used.
Moreover, as (B) poly (alkylene oxide) glycol which is another component of the polyether ester amide, polyethylene glycol, poly (1,2-propylene oxide) glycol, poly (1,2-propylene oxide) glycol, Poly (1,3-propylene oxide) glycol, poly (tetramethylene oxide) glycol, poly (hexamethylene oxide) glycol, poly (hexamethylene oxide) glycol, or a block or random copolymer of ethylene oxide and propylene oxide is preferred. Among these, polyethylene glycol is particularly preferably used because of its excellent antistatic properties.
Furthermore, (C) dicarboxylic acid which is another component of polyether ester amide includes terephthalic acid, isophthalic acid, phthalic acid, naphthalene-2,6-dicarboxylic acid, naphthalene-2, 7-dicarboxylic acid, diphenyl. -Aromatic dicarboxylic acids such as 4,4'-dicarboxylic acid, diphenoxyethanedicarboxylic acid and 5-sulfoisophthalic acid, 1,4-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid and dicyclohexyl-4,4'- Aliphatic dicarboxylic acids such as dicarboxylic acids, and aliphatic carboxylic acids such as succinic acid, oxalic acid, adipic acid, sebacic acid and dodecanediic acid (decanedicarboxylic acid), and the like, particularly terephthalic acid, isophthalic acid, 1,4 -Cyclohexanedicarboxylic acid, sebacic acid, adipic acid and Dekajin acid polymerizable, preferably used in terms of color and physical properties.
The poly (alkylene oxide) glycol and dicarboxylic acid react in a molar ratio of 1: 1. Depending on the type of dicarboxylic acid used, the charging ratio is usually changed, and the molar ratio is 1: 1 in the polymer.
In the polyether ester amide of the present invention, the polyether ester unit is used in the range of 30% by weight to 70% by weight, and a fiber having excellent mechanical properties, good yarn forming properties, and antistatic properties can be obtained.
The metal salt compound of sulfonic acid in the antistatic agent used in the present invention is alkylbenzene sulfonic acid such as dodecylbenzene sulfonic acid, tridecyl benzene sulfonic acid, tridecyl benzene sulfonic acid, nonyl benzene sulfonic acid, and sodium, potassium, etc. A salt formed from an alkali metal, or a salt formed from an alkylsulfonic acid and an alkali metal such as sodium or potassium, and sodium dodecylbenzenesulfonate is particularly preferable.
The compounding amount of the sulfonic acid metal salt compound in the polyether ester amide is 2 parts by weight or more and 20 parts by weight or less, particularly preferably 3 parts by weight or more and 10 parts by weight or less with respect to 100 parts by weight of the polyether ester amide. is there. The fiber obtained by using the antistatic agent whose blending amount satisfies this range is more excellent in antistatic property and good in yarn production. In the present invention, the polyether ester amide antistatic agent contained in the polyester may of course contain conventionally known antioxidants, coloring inhibitors and the like.
When the antistatic agent satisfies the above-described configuration, it is presumed that the antistatic component is easily dispersed uniformly, and that both good antistaticity and single yarn fineness variation can be better achieved.
In the present invention, the antistatic agent is preferably contained in a proportion of 1.5% by weight or more and less than 2.5% by weight with respect to the fiber weight. More preferably, it is 2.0 weight% or less. If the amount is less than 1.5% by weight, grooves on the fiber surface that satisfy the sensitivity characteristics, fibrillation, and voids inside the fiber cannot be obtained, and the antistatic function may be insufficient. Further, if it is 2.5% by weight or more, the sensitivity characteristics and the antistatic function can be obtained, but there is a tendency that the fabric strength sufficient for wearing cannot be obtained when the fabric is a thin fabric having a basis weight of 100 g / m ² or less.
The antistatic agent used in the present invention is preferably blended in a streak-like manner in the fiber axis direction in the polyester fiber. As a method of blending the antistatic agent in a streak state in the fiber axis direction of the polyester fiber, it is preferable to add the antistatic component at any stage from the polymerization step of the polyester to the spinning in the spinning step. A method of mixing in a spinning machine is particularly preferable. As a method of chip blending, there is a means of mechanically blending with a blender or the like, but from the aspect of preventing demixing when the blended chips are transferred, each chip is fed to the supply section of the melt extrusion apparatus by a metering supply device at a predetermined ratio. It is more preferable to continuously weigh and supply and blend them. The polymer thus melted can be produced by a known spinning method. Among them, a high speed spinning method that does not require a drawing step is a preferable method because it improves productivity and reduces costs and reduces generation of fluff by omitting the drawing step. For example, at the time of melt spinning, there is a method in which a melt-spun polyester yarn is once cooled and solidified, subsequently introduced into a heating region and stretched, and then wound at a speed of 4500 m / min or more. The stretching in the heating zone that is continued after cooling is preferably performed at a temperature that is not lower than the glass transition temperature and not higher than the melting point. If the temperature is lower than the glass transition point, the fiber properties are extremely inferior, and it is difficult to withstand practical use. On the other hand, when the temperature exceeds the melting point, not only does it cause fusing and yarn breakage between single yarns in the heating zone, which causes operational problems, but also the texture of the fabric obtained by weaving or knitting the obtained fibers. It will be extremely inferior. The stretching in the heating region here may be either stretching in a non-contact indirect heating region or stretching using a heating take-up roller and a heating stretching roller.
The polyester fiber constituting the women's weaved knitted fabric of the present invention is preferably a multifilament in which 12 to 100 polyester fiber single fibers having a single fiber fineness of 0.05 dtex to 5 dtex are assembled. When the single fiber fineness is smaller than 0.05 dtex, physical strength sufficient to be worn as clothing cannot be obtained. On the other hand, if the thickness is larger than 5 dtex, sufficient antistatic properties cannot be obtained, the texture becomes hard, and the glossiness may be impaired. The single fiber fineness is preferably not less than 0.1 dtex and not more than 4 dtex, and more preferably not less than 0.5 dtex and not more than 3.5 dtex.
The number of single fibers is more preferably 20 or more and 75 or less. The fiber cross-sectional shape is not particularly specified but may be arbitrarily set such as a circular shape or a multi-leaf shape, but is a multi-leaf shape having three or more protrusions, and is 1.5 or more and less than 2.0. It is preferable that the degree of irregularity.
By using a multi-leaf shape having three or more protrusions, silk-like fibrils, a feeling of tingling, and a glossy feeling with depth can be further imparted. If the degree of profile is 2.0 or more, the yarns that are woven or knitted will be split or split during the yarn processing, twisting processing due to friction or stress concentration, and the single yarn constituting the multifilament will be split at the time of alkali reduction in dyeing processing. This makes it easy to obtain a fabric strength that has no practical problem.
The polyester fiber may be a raw yarn that has just been spun and drawn, a processed yarn that has been crimped by passing it through a hot plate, or may be entangled by twisting or air as appropriate. Further, it may be combined with other polyester fibers, natural fibers, recycled fibers, chemical fibers, and synthetic fibers.
The woven or knitted fabric of the present invention preferably has a frictional band voltage defined by JIS L 1094 of 3000 V or less. More preferably, it is 2500 V or less.
If it exceeds 3000 V, it becomes easy to be charged with electricity due to rubbing of other clothing at the time of wearing, etc., and clinging or dust adhesion may occur, making it difficult to obtain wearing comfort.
Moreover, by setting it as 3000V or less, this invention is excellent also in washing durability, and there is almost no antistatic performance fall after repeated wearing, and it is preferable.
A friction band voltage of a general polyester woven or knitted fabric is about 5000 to 6000 V, and a woven or knitted fabric subjected to an antistatic process, which is said to have good antistatic properties, at a dyeing finish is 3000 V or less. However, in dyeing and finishing, performance deterioration due to repeated wear, and impregnation of the woven or knitted fabric with resin, coating, coating, etc. are performed to impart durability. It is not preferable.
The women's weaved knitted fabric of the present invention is composed of polyester fibers in which the above-mentioned antistatic agent is blended in a streak shape, so that it has a silky fibrillar texture and a creased texture, and has a dry texture and depth. A woven or knitted fabric with excellent luster and physical properties that prevents the clinging due to static electricity and dust adhesion caused by fibrillation of polyester fiber, and has no problems in actual wearing even in the case of fibrillated thin fabric, while having a certain glossiness. It is done.
The women's fabric of the present invention is a fabric in which the polyester fiber is arranged alone in all warps and / or all wefts, and the tear strength specified in JIS L 1096 is arranged in the polyester fiber. In the measured direction, it is 4.9 N or more and preferably has a basis weight of 100 g / m ² or less and 40 g / m ² or more.
More preferably, the polyester fiber is contained in a proportion of 35% by weight or more based on the total weight of the fabric. If it is less than 35% by weight, the fabric strength can be obtained, but the silk-like fibrill texture and kishimi texture, which are the objects of the present invention, cannot be sufficiently obtained, and sufficient antistatic performance necessary for wearing can be obtained. There is no tendency. Although the object of the present invention can be achieved even with a woven fabric having a basis weight of more than 100 g / m ² , it becomes too heavy and insufficient as a thin fabric apparel product that requires more delicateness. Further, if the basis weight is less than 40 g / m ^2, there is a concern about the fabric strength that is practically required. More preferably, it is 85 g / m ² or less and 45 g / m ² or more.

The present invention comprises a woven fabric in which the polyester-based fiber is arranged in all warp yarns and / or all weft yarns, thereby having a silky fibrill texture, a kishimi texture, and a dry texture, Prevents clinging and dust adhesion due to static electricity of fibrillated thin fabrics with a basis weight of 100 g / m ² or less, which had a problem with the conventional technology, while having a deep gloss feeling. There is no tear strength 4.9N or more of women's fabric.
In producing the women's woven or knitted fabric of the present invention, after weaving and knitting, scouring, relaxation, drying, and dry heat setting, which are normal processes of woven and knitted fabric, are performed, a processing temperature of 120 ° C to 190 ° C, and a linear pressure of 100 kg / cm or more. It is preferable to carry out an alkali weight reduction treatment of 5% to 40% relative to the fiber weight of the woven or knitted fabric. More preferably, it is an alkali weight reduction treatment in which the pressure is continuously applied at a treatment temperature of 140 ° C. to 180 ° C. and a linear pressure of 150 kg / cm to 250 kg / cm, and the fiber weight of the woven or knitted fabric is 5% to 25%. As the pressure treatment machine, a calendering machine capable of linear pressure of 100 kg / cm or more, more preferably 150 kg / cm or more is preferable.
In the continuous pressure treatment at a treatment temperature of less than 120 ° C. or a linear pressure of less than 100 kg, it is difficult to obtain uniform fibrillation on the fiber surface of the woven or knitted fabric, resulting in streak-like or patchy grade defects, resulting in poor appearance quality. There is a case. On the other hand, when the treatment temperature exceeds 190 ° C., a difference in the fibrillation state occurs, and the hue difference in the width direction of the woven or knitted fabric tends to be conspicuous, resulting in poor appearance quality.
When the weight loss rate in the alkali weight loss treatment is less than 5%, a plurality of grooves in the fiber axis direction and voids inside the fiber are not formed, and silky fibrils, texture, and deep gloss are difficult to obtain. On the other hand, if the weight loss rate exceeds 40%, the tear strength is greatly reduced, and it becomes difficult to obtain sufficient fabric strength in actual wearing. In addition, the antistatic agent in the fiber is largely removed, and good antistatic properties may not be obtained.
As the conditions for the alkali weight loss treatment, known methods that are generally applied are applied.
After the alkali weight reduction treatment, generally known dyeing and finishing of woven and knitted fabrics are applied. Furthermore, if necessary, there is no problem even if a special functional processing agent such as a softening agent, a sweat absorbing agent, a water repellent agent, an antibacterial agent, or a deodorant is added as long as the object of the present invention is achieved.
The woven or knitted fabric of the present invention has a silky fibrillar texture and a feeling of creaking, has a dry texture, a deep glossiness, and has excellent antistatic properties and fabric strength. It is suitably used as a garment knitted fabric.

Hereinafter, the present invention will be described in detail by examples. In addition, each characteristic value shown to an Example and a comparative example is measured with the following method. In the evaluation, “◎”, “◯”, “Δ”, and “X” are expressed as very good, good, slightly bad, and bad.
(Measurement method of frictional voltage)
Humidity adjustment of the sample and the measurement room environment are performed at 20 ° C. × 40% RH by the friction band voltage measurement method defined in JIS L 1094 (1997).
(Tear strength)
It measured using D method (pendulum method) prescribed | regulated to JISL1096.
(Deformation degree)
The degree of irregularity is obtained from the following formula.

Deformity = L1 / L2
L1: Diameter of circumscribed circle of fiber cross section L2: Diameter of inscribed circle of fiber cross section (washing process)
The washing was performed according to the method of 103 of JIS L 0217 (1995).
<Example>
Example 1
As an antistatic agent, 100 parts by weight of a polyether ester amide obtained by reacting 50% by weight of caprolactam, 47.3% by weight of a synthetic product of ethylene oxide and 2.7% by weight of adipic acid (47.3% by weight of a polyether ester unit) %) Was mixed with 5 parts by weight of sodium dodecylbenzenesulfonate as a sulfonic acid metal salt compound to prepare a polyetheresteramide antistatic chip. At the time of preparation, 1,3,5-trimethyl-2,4,6-tri (3,5-di-terbutyl-4-hydroxyl) benzene as an antioxidant is added to 5. 5 parts by weight of polyetheresteramide. 5 parts by weight were added. The polyetheresteramide-based antistatic agent chip was dried at 80 ° C. for 6 hours and then blended at a ratio of 2 parts by weight of polyetheresteramide to 98 parts by weight of polyethylene terephthalate chip vacuum-dried at 160 ° C. for 6 hours to melt. It was melt-kneaded with a spinning machine to obtain a drawn yarn of 84 dtex 36 filaments (round cross section / degree of irregularity 1.0).
A twisted yarn having a twist number of 2000 T / M was formed on the obtained polyester fiber with a double twister twisting machine, and then a woven fabric having a back satin amundsen texture was used for warp and weft.
The resulting fabric is subjected to conventional scouring, relaxation, drying, and dry heat setting, and then continuously applied at a temperature of 160 ° C. and a linear pressure of 100 kg / cm using a calendar processing machine having a metal roll and a resin roll. After the pressure treatment, an alkali weight reduction treatment was performed at 98 ° C. with an alkali concentration of 40 g / l (caustic soda) using a liquid dyeing machine to obtain a woven fabric with a weight loss rate of 37%. The weight-reduced fabric was dyed and finished by a conventional method to obtain a fabric having a warp density of 235 / 2.54 cm, a weft density of 100 / 2.54 cm, and a basis weight of 85 g / m ² . Table 1 shows the streak formation on the fiber surface of the woven fabric thus obtained, the formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional band voltage, and tear strength.
The obtained woven fabric has a silky fibrillar texture and a feeling of creaking, has a dry texture and a deep glossiness, and has a frictional voltage of 3000 V or less after 10 washings. It was a product excellent in appearance quality having a strength of 4.9 N or more.
Example 2
Using the same antistatic agent and ratio as in Example 1, melt-kneading was carried out with a melt spinning machine to obtain a drawn yarn of 56 dtex 36 filaments (three-leaf cross section / degree of irregularity 1.7).
A twisted yarn having a twist number of 2700 T / M was prepared on the obtained polyester fiber using a double twister twisting machine, and then used for warp and weft to weave a plain fabric.
The obtained woven fabric was treated in the same manner as in Example 1 except that continuous pressing at a temperature of 180 ° C. and a linear pressure of 180 kg / cm was performed. The weight loss was 28% and the warp density was 115 / 2.54. A woven fabric having a cm density of 97 pieces / 2.54 cm and a basis weight of 49 g / m ² was obtained. Table 1 shows the streak formation on the fiber surface of the woven fabric thus obtained, the formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional band voltage, and tear strength.
Example 3
The same treatment as in Example 2 was performed except that the weight reduction rate was changed to 7% using the raw machine obtained in Example 2, and the formation of streaks on the fiber surface of the obtained woven fabric and the formation of voids inside the fiber Table 1 shows the appearance quality, sensitivity characteristics, frictional voltage, and tear strength.
Example 4
The same polyester fiber as in Example 1 except that the amount of antistatic agent in Example 1 was blended at a ratio of 1.5 parts by weight of polyetheresteramide to 98.5 parts by weight of polyethylene terephthalate chip. A woven fabric was woven and subjected to the same treatment. Table 1 shows the streak formation on the fiber surface of the woven fabric thus obtained, the formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional band voltage, and tear strength.
Example 5
The same polyester fiber as in Example 2 except that the amount of antistatic agent in Example 2 was blended at a ratio of 1.5 parts by weight of polyetheresteramide to 98.5 parts by weight of polyethylene terephthalate chip. A woven fabric was woven and subjected to the same treatment. Table 1 shows the streak formation on the fiber surface of the woven fabric thus obtained, the formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional band voltage, and tear strength.
Example 6
The same polyester fiber as in Example 2 except that the amount of antistatic agent in Example 2 was blended at a ratio of 2.4 parts by weight of polyetheresteramide to 97.6 parts by weight of polyethylene terephthalate chip. A woven fabric was woven and subjected to the same treatment. Table 1 shows the streak formation on the fiber surface of the woven fabric thus obtained, the formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional band voltage, and tear strength.

Comparative Example 1
Without using the antistatic agent of Example 1, only a polyethylene terephthalate chip was melted by a melt spinning machine to obtain a drawn yarn of 84 dtex 36 filaments (round cross section / degree of irregularity 1.0).
Otherwise, weaving and treatment were carried out in the same manner as in Example 1 to obtain a woven fabric having a weight loss rate of 37%, a warp density of 235 pieces / 2.54 cm, a weft density of 100 pieces / 2.54 cm, and a basis weight of 85 g / m ² . Table 1 shows the streak formation on the fiber surface of the obtained woven fabric, the formation of voids inside the fiber, the appearance quality, the sensitivity characteristics, the frictional band voltage, and the tear strength. Comparative Example 2 in which tear strength was good, but there was no fibrillation and kishimi texture, and anti-static properties were not suitable as a material for women's clothing.
The same polyester fiber as in Example 2 except that the amount of antistatic agent in Example 2 was blended at a ratio of 3.0 parts by weight of polyetheresteramide to 97.0 parts by weight of polyethylene terephthalate chip. A woven fabric was woven and subjected to the same treatment. Table 1 shows the streak formation on the fiber surface of the obtained woven fabric, the formation of voids inside the fiber, the appearance quality, the sensitivity characteristics, the frictional band voltage, and the tear strength. Although it had good sensitivity characteristics and antistatic properties, it was inferior in tear strength without problems in actual wearing.
Comparative Examples 3-4
Except for changing the weight loss rate using the raw machine obtained in Example 2, the same treatment as in Example 2 was carried out, the formation of streaks on the fiber surface of the resulting woven fabric, the formation of voids inside the fiber, the appearance Table 1 shows the quality, sensitivity characteristics, frictional voltage, and tear strength.
Examples 7-9
Using the raw machine obtained in Example 2, the same treatment as in Example 2 was carried out except that the temperature and line pressure of the continuous pressurizing treatment were changed, and the streaks in the fiber state on the fiber surface of the resulting fabric Table 1 shows the formation, formation of voids inside the fiber, appearance quality, sensitivity characteristics, frictional voltage, and tear strength.
The resulting woven fabric had good sensitivity characteristics, antistatic properties, and tear strength, but had a large warp quality and a large color difference in the width direction of the woven fabric, and was slightly inferior in appearance quality.
Example 10
A woven fabric similar to that of Example 2 was woven and the same treatment was performed, except that the degree of deformity of the polyester fiber obtained in Example 2 was changed to 2.2. Table 1 shows the streak formation on the fiber surface of the obtained woven fabric, the formation of voids inside the fiber, the appearance quality, the sensitivity characteristics, the frictional band voltage, and the tear strength.
The obtained woven fabric had good sensitivity characteristics and antistatic properties, but was inferior in tearing strength with no problem in actual wearing.

Claims (6)

A plurality of streak-like grooves are formed in the fiber surface layer in the fiber surface layer, and the inside of the fiber has voids having a diameter of 0.1 μm to 5 μm that are independent from the groove in the fiber surface layer and are not continuous in the fiber length direction. And a woven or knitted fabric containing polyester fibers having a gap of 1 to 300 per cross section of the transverse fibers, wherein a part of the surface of the polyester fibers is fibrillated. knitting. 2. The polyester fiber according to claim 1, comprising an antistatic agent represented by the following requirements (1) and (2) at a ratio of 1.5 wt% or more and less than 2.5 wt% with respect to the fiber weight. Woven and knitted fabric.
(1) (A) Polyether ester amide obtained by reacting (B) poly (alkylene oxide) glycol and (C) dicarboxylic acid, at least one selected from (A) aminocarboxylic acid, lactam and diamine and dicarboxylic acid salt The polyether ester unit in the polyether ester amide is 30 to 70% by weight.
(2) An antistatic agent comprising 100 parts by weight of the polyetheresteramide and 2 to 20 parts by weight of a sulfonic acid metal compound. 3. The polyester fiber according to claim 1, wherein the cross-sectional shape of the polyester fiber is a multilobal shape having three or more protrusions, and has an irregularity of 1.5 or more and less than 2.0. Woven knitting. The woven or knitted fabric according to any one of claims 1 to 3, wherein a frictional voltage defined in JIS L 1094 is 3000 V or less. The polyester fiber according to claim 1 is a woven fabric in which all the warp yarns and / or all the weft yarns are arranged alone, and the tear strength specified in JIS L 1096 is in the direction in which the polyester fiber is arranged. The woven or knitted fabric according to any one of claims 1 to 4, wherein the woven or knitted fabric has a basis weight of 100 g / m ² or less and 40 g / m ² or more. After continuous pressure treatment at a treatment temperature of 120 ° C. to 190 ° C. and a linear pressure of 100 kg / cm or more, it is obtained by alkali weight loss treatment, and the alkali weight loss rate is 5% to 40% relative to the fiber weight of the woven or knitted fabric. The method for producing a knitted or knitted fabric according to any one of claims 1 to 5, wherein the method is provided.