JP2006104617A - Woven or knitted fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raw material (woven or knitted fabric) which can have washing-resistant antistaticity and water repellency could not been achieved by conventional techniques and have a soft swollen worsted yarn-like touch and a good black color-developing property. <P>SOLUTION: This woven or knitted fabric to whose yarns polymer coating films consisting mainly of a fluorine-based compound and/or a silicone-based compound are imparted is characterized in that the yarns constituting the woven or knitted fabric contain composite yarns comprising at least two kinds of polyester-based multifilaments, wherein at least one yarn (A) constituting the composite yarn comprises sheath-core type conjugated fibers in whose each core an antistatic polymer is disposed, and a yarn length difference between the yarn (A) and the other yarn (B) satisfies the formula (1): 3%≤ yarn length difference between the yarn (A) and the other yarn (B) ≤30%. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a woven or knitted fabric excellent in antistatic property, water repellency and deep color property.

   In recent years, black formal materials for women's outerwear are required to have functions such as antistatic properties and water repellency as well as texture and black color development such as elasticity and resilience.

  However, with regard to antistatic properties, for example, in the case of polyester fiber materials, static electricity is likely to occur as a disadvantage inherent to polyester fibers, and in particular, dust adhesion due to static electricity is a problem in low humidity environments in winter. At present, an antistatic agent is attached at the time of processing to prevent the generation of static electricity.

  As for water repellency, it is normal to impart water repellency to the woven or knitted fabric by attaching a water repellant during dyeing finish processing, but it is difficult to achieve both antistatic properties and has a texture and black color development. It was a problem that it was damaged.

  Conventionally, there has been proposed a woven or knitted fabric made of core-sheath type composite fiber yarn, the fiber surface of which has a polymer film mainly composed of a fluorine compound and a silicone compound (see Patent Document 1). However, with such a woven or knitted fabric, water repellency can be obtained, but antistatic property cannot be imparted.

Separately, a composite mixed yarn composed of antistatic fibers having a high fineness and non-antistatic fibers having a fineness has been proposed (see Patent Document 2), but antistatic properties are obtained with this composite mixed yarn. However, water repellency could not be imparted and the black color development was insufficient.
JP 2000-273741 A Japanese Patent Laid-Open No. 62-149927

  SUMMARY OF THE INVENTION An object of the present invention is to provide a woven or knitted fabric that can obtain washing-resistant antistatic properties and water repellency, and has a soft and swelled fur texture and good black color development. .

  The woven or knitted fabric of the present invention that achieves the above-described object has the following configuration. That is, the woven or knitted fabric of the present invention is a woven or knitted fabric in which a polymer film mainly comprising a fluorine compound or / and a silicone compound is applied to the fiber surface, and the yarn constituting the woven or knitted fabric is at least A core-sheath type comprising a composite yarn composed of two types of polyester-based multifilament fibers, and at least one of the yarns (A) constituting the composite yarn is provided with an antistatic polymer in the core portion A knitted or knitted fabric comprising a composite fiber and having a yarn length difference from the other yarn (B) satisfying the following formula (1).

3% ≦ Yarn length difference between yarn (B) and yarn (A) ≦ 30% Formula (1)
One of the preferred embodiments of the woven or knitted fabric of the present invention is to use a copolyester containing a polyalkylene glycol compound in the core of the yarn (A).

  Moreover, one of the preferable aspects of the woven or knitted fabric of the present invention is to have fine uneven holes on the surface of the yarn (B).

  Moreover, one of the preferable aspects of the woven or knitted fabric of the present invention is that the above-mentioned composite yarn is additionally twisted within the range of 10,000 to 30,000 in the twist coefficient (K) in the following formula (2).

T = K × D ^−1/2
Where K: Twisting coefficient of composite yarn
T: Number of twists (T / M)
D: Fineness (dtex)
One of the preferred embodiments of the knitted or knitted fabric of the present invention is mainly composed of a fluorine compound and a silicone compound via a polymer comprising a compound having a methylol group or / and an acrylate polymer on the fiber surface. It is that a polymer film is applied.

  According to the present invention, washing-resistant antistatic and water repellency can be imparted to a garment, and a woven or knitted fabric having a soft and swelled fur texture and good black color development can be obtained. . The knitted or knitted fabric of the present invention is particularly suitable as a black formal material for women as clothing, but it can also be used for sports clothing such as raincoats, athletic wear, ski wear, linings, curtains, and the like.

  The woven or knitted fabric as a base fabric used in the present invention includes a composite yarn composed of at least two types of polyester-based multifilament fibers, and at least one type of polyester-based multifilament yarn (yarn) It is necessary that the strip (A)) is made of a core-sheath type composite fiber in which a polymer having antistatic properties is arranged in the core.

  The antistatic polymer suitably used in the present invention includes, for example, a copolymer polymer containing a polyoxyalkylene chain component, polyamine, polyacrylate ester, diglycidyl ether, terephthalic acid and other acid components. Polyether ester amide compositions and the like can be mentioned, but it is preferable to use a copolyester containing a polyalkylene glycol compound as the core of the yarn (A) from the viewpoint of high black color development. These may be used alone or in combination with other polymers as long as the effects of the present invention are exhibited.

  Further, the polymer having antistatic property may be blended, or may be compounded with a concentric core sheath or an eccentric core sheath, or may have a sea island shape having a plurality of cores. Moreover, although the cross-sectional shape may be circular or non-circular, it is preferable that these are compounded with the concentric core sheath. In order to exhibit good antistatic properties, it is preferable that the antistatic polymer is continuously present in a certain amount in the fiber axis direction, and from the viewpoint of color development and wear resistance. It is preferable to collect only in the center.

  Further, the composite ratio of the polymer having antistatic property in the core-sheath type composite fiber constituting the yarn (A) can be arbitrarily selected, but the composite ratio is preferable in order to impart good antistatic property. Is 5 to 30% by weight.

  Moreover, the cross-sectional shape of the core-sheath type composite fiber constituting the yarn (A) may be circular or irregular, but the cross-sectional shape is circular considering the quality of the product such as irritation and fibrillation. It is preferable that Furthermore, the single fiber fineness of the core-sheath type composite fiber of the yarn (A) is 3.3 dtex or more from the viewpoint that the yarn (A) mainly forms the core portion of the composite yarn, and builds up the elasticity and rebound. From the viewpoint of obtaining a supple texture, it is preferably 10 dtex or less.

  In order to achieve both rebound and soft feeling, the preferred total fineness range of the yarn (A) is 30 dtex or more and 150 dtex or less.

 The other polyester multifilament yarn (yarn (B)) constituting the composite yarn preferably has fine irregular holes (microvoids) on the surface of the single fiber. By forming the fine uneven holes, the washing durability of the polymer film applied by the dyeing process can be improved, the light reflectance can be suppressed, and the black color development can be improved. Fine uneven holes can be formed by subjecting polyester fibers containing 0.4 to 5% by weight of colloidal silica fine particles having an average primary particle diameter of about 0.02 to 0.1 μm to an alkaline solution treatment. Colloidal silica refers to a material in which fine particles existing in a single particle form containing silicon oxide as a main component and present as colloidal with water or a monovalent alcohol or diol or a mixture thereof as a dispersion medium. In addition, the polyester-based multifilament yarn (yarn (B)) has a preferable total fineness range of 50 dtex or more and 150 dtex or less, particularly in order to form a soft and eyelash-like texture. The single fiber fineness range is 0.5 dtex or more and 3 dtex or less.

In the present invention, the polyester type is composed mainly of terephthalic acid and at least one selected from ethylene glycol, tetramethylene glycol, polypropylene glycol, cyclohexane-1,4-dimethanol, pentamethylene glycol, and hexamethylene glycol. The main glycol component is a polyester, and a 40% mol or less third component may be copolymerized. Preferred copolymer components include dibasic acids such as adipic acid, sebacic acid, isophthalic acid, diphenyldicarboxylic acid, naphthalene dicarboxylic acid, oxyacids such as oxybenzoic acid, and diethylene glycol, propylene glycol, polyethylene glycol glycols, Examples include 5-sodium sulfoisophthalic acid and 2,2bis {4- <2-hydroxyethoxy> phenyl} propane. A polyester obtained by copolymerizing one or two or more of these copolymer components is preferably used.
Moreover, as a composite ratio of the yarn (A) and the yarn (B), it is preferable to satisfy the following formula from the viewpoint of texture construction and black color development improvement.

30% ≦ total fineness of yarn (A) / total fineness of composite yarn ≦ 70%
Next, it is important that the yarn length difference between the yarn (A) and the yarn (B) of the composite yarn satisfies the following formula (1) from the viewpoint of texture construction, black color development improvement and water repellency improvement. It is.

3% ≦ Yarn length difference between yarn (B) and yarn (A) ≦ 30% Formula (1)
When the yarn length difference is less than 3%, it is difficult to obtain a soft-touch eyelash-like texture, and the black color developability also decreases. That is, the yarn form of the composite yarn is preferably a structure in which the yarn (A) mainly constitutes the core portion and the yarn (B) mainly constitutes the sheath portion. Regarding the yarn length difference,
It is a composite yarn having a relationship of average fiber length of yarn (A) <average fiber length of yarn (B). This is to obtain the above-mentioned good texture and black color developability. On the other hand, if the yarn length difference exceeds 30%, the yarn length difference cannot be absorbed even if strong flame is applied, and nep is generated in the weaving process, resulting in poor quality. Furthermore, since the space | gap between single fibers increases, it becomes easy to take in water and water repellency will fall.

  Examples of a method for obtaining a composite yarn having a yarn length difference of yarn (A) <yarn (B) include a method using composite false twisting or composite fiber blending. These methods are appropriately selected in accordance with required characteristics such as texture and function required for a black formal material.

   The woven or knitted fabric of the present invention is preferably composed of a substantially twisted yarn, and the twisting range thereof is a range in which the twisting coefficient represented by the following formula (2) is 10,000 to 30,000. Is preferred.

T = K × D ^−1/2 formula (2)
Where K: Twisting coefficient of composite yarn
T: Number of twists (T / M)
D: Fineness (dtex)
By setting the twist coefficient to 10000 or more and tightening the composite yarn, when it is made into a woven or knitted fabric, it is possible to improve water repellency and to give firmness, waist and rebound. On the other hand, when the twist coefficient exceeds 30000, the texture of the product becomes hard, and the process passability in the twisting process and the weaving process is further reduced. Further, proper twisting of the composite yarn is effective for improving the black color development. A more preferable range of the twist coefficient is 15000 to 25000.

  When the composite yarn used in the present invention is a composite false twisted yarn, two conventional multifilaments such as those described in JP-A-10-259532 and JP-A-11-335936 are used. After pre-entanglement, it can be manufactured by applying a composite false twisting technique. In the case of composite blended yarn, a conventional known technique, for example, a technique for blending with a core yarn after heat-treating a filament serving as a sheath thread as disclosed in Japanese Patent Application Laid-Open No. 2000-144553 is applied. Can be manufactured.

  The preferable total fineness of the composite yarn is 100 dtex or more and 250 dtex or less from the viewpoint of having a supple texture.

  The woven or knitted fabric used as the base fabric in the present invention is not limited by the specifications such as the woven / knitted structure and density of the woven / knitted fabric generally used. In addition, those that are blended with natural fibers such as cotton and wool, knitted, woven, knitted, and the like are included, but are not limited thereto, as long as the effects of the present invention are not hindered.

  The fineness ratio of the yarn (A) is preferably 30% or more with respect to the composite yarn, and when it is made into a woven or knitted fabric, the effect expected in the present invention can be obtained.

  Furthermore, the woven or knitted fabric of the present invention is obtained by providing a polymer film mainly composed of a fluorine compound and / or a silicone compound on the fiber surface. When the fiber surface has a polymer film mainly composed of a fluorine compound and / or a silicone compound, high water repellency and deep color can be imparted to the woven or knitted fabric.

  Examples of the fluorine compound used in the present invention include tetrafluoroethylene-hexafluoropropylene copolymer, polypentadecafluorooctyl acrylate, polytetrafluoroethylene, polyfluoroethyl acrylate, polytrifluoroethyl acrylate, polytrifluoro Chlorethylene, polytrifluoroisopropyl methacrylate, polytrifluoroethyl methacrylate, and the like can be used, but are not limited thereto.

  Examples of the silicone compound include polydimethylsilane, dimethylpolysiloxane, methylhydrogenpolysiloxane, amino-modified silicone, epoxy-modified silicone, polyether-modified silicone, and carboxy-modified silicone. It is not limited to.

  In the present invention, these fluorine compounds and silicone compounds are preferably used in combination, and each polymer, monomer, reaction intermediate, etc. may be used alone, or two or more may be used in combination. it can.

In addition, the woven or knitted fabric of the present invention, from the viewpoint of improving durability against washing and dry cleaning of the polymer film described above, via a polymer or acrylic acid ester polymer comprising a compound having a methylol group on the fiber surface, It is preferable to have a polymer film mainly composed of the aforementioned fluorine-based compound and silicone-based compound.
As the compound having a methylol group, for example, compounds such as methylol urea, methylol melamine, methylol ethylene urea, methylol triazone, methylol uron, methylol glyoxal, and methylol propylene urea can be used. As the acrylate polymer, for example, polybutyl acrylate, polyethyl acrylate, polymethyl acrylate, and the like can be used.

  In the woven or knitted fabric of the present invention, the refractive index of the polymer film is preferably 1.5 or less from the viewpoint of improving deep color.

  In the present invention, from the viewpoint of excellent deep color performance, it is preferable that the polymer film is provided in an amount of 0.1 to 10% by weight, more preferably 0, to the woven or knitted fabric as the base fabric. 0.5 to 5% by weight. The film thickness is preferably from 1 nm to 500 nm from the viewpoint of improving durability.

  The woven or knitted fabric of the present invention has antistatic durability. The woven or knitted fabric having antistatic durability of the present invention is that the withstand voltage after 20 washings is 3.0 kV or less. When the withstand voltage of friction exceeds 3 kV, dust adhesion becomes significant under low humidity, which may reduce the quality of the product. Of course, most products before washing are provided with an antistatic agent and maintain a very low withstand voltage. However, this antistatic agent usually drops off during washing or dry cleaning, and the friction withstand voltage after washing or dry cleaning becomes a very high level, increasing dust adhesion. In that sense, since the woven or knitted fabric of the present invention has antistatic properties inside the fiber material, it maintains a friction withstand voltage of 3 kV or less semipermanently to prevent dust adhesion.

  The woven or knitted fabric of the present invention has water repellency durability. The woven or knitted fabric with water repellency durability of the present invention is that the water repellency test result after 20 washings is grade 3 or higher. When the water repellency test result is lower than the third grade, the water is easily wetted by the woven or knitted fabric, and the woven or knitted fabric having water repellency is not obtained.

  The woven or knitted fabric of the present invention is particularly suitable for a black formal material for women as clothing. In addition, it can be suitably used for sports clothes such as raincoats, athletic wear, ski wear, linings, and curtains.

  Hereinafter, the woven or knitted fabric of the present invention will be described in more detail by way of examples. In the present invention, each evaluation was evaluated by the following method.

1. Washing test
The cycle temperature is 40 ° C., the washing time is 5 minutes, the rinsing is 30 ° C. × 2 minutes × 2 times, and the dehydration is 30 seconds for one cycle washing in a two-tank washing machine. As a detergent, Kao's “Attack” (registered trademark) is used at 1 g / L, and the amount of the liquid is 40 L, and the weight of the test cloth and the cotton cloth, which is the guide cloth, is added to 830 g.

2. Black color developability The black color developability is obtained by stacking 4 sheets of the obtained woven or knitted fabric and measuring L * 5 times with a colorimeter (SM-3 type manufactured by Suga Test Instruments Co., Ltd.) under the condition of measurement diameter 30 mmφ. The average value was evaluated.

3. Antistatic
It is measured by the friction withstand voltage method described in JIS 1094. Using plain woven cakinan No. 3 (weight per unit of 100 g / m ² ), which has been previously scraped, refined, and bleached as a friction target fabric using a Kyodai Kaken rotary statistic tester, rotor rotation speed 400 rpm, calibration applied voltage 100 V, temperature 20 ° C. The measurement is carried out in an environmental condition with a relative humidity of 30%. As a measurement cloth, a sample which has been completely dried for 1 hour at a temperature of 70 ° C. after 20 washings is used.

4). Water repellency: Measured by a waterproof test method described in JIS1092. 250 ml of water is sprayed on the test cloth in the shower state, and the water repellency is determined according to the criteria shown in Table 1 in the state of water droplets attached to the test cloth.

5. Yarn length difference The composite yarn is marked at a distance of 10 cm in length under a load of 0.11 cN / dtex, and five composite yarns are randomly taken out from the composite yarn. The single fiber lengths of A) and the yarn (B) are measured, and the average length La of the yarn (A) and the average length Lb of the yarn (B) are obtained and obtained by the following formula.

6). Swelling sensation Relative to the feeling of holding the respective fabrics of the Example and Comparative Example in the hand, ◎ indicates that the feeling of swelling is relatively large, ○ indicates that it feels a little larger, ○ indicates that it does not feel large, and × The characteristics close to the average of the evaluations of the five people selected in the above were used as characteristics.

7). Soft feeling ◎ The feeling when holding each fabric of the Example and Comparative Example in the hand is relatively ◎, the feeling that feels a little larger is ○, the feeling that does not feel great is ×, random The characteristics close to the average of the evaluations of the five people selected in the above were used as characteristics.

Example 1
As the yarn (A), a copolymer polyester containing 1% by weight of a polyetheresteramide antistatic agent containing 6% by weight of sodium dodecylbenzenesulfonate as a core component, polyethylene terephthalate as a sheath component, and a total fineness of 84 dtex A core-sheath antistatic stretched yarn having 18 filaments and an elongation of 30% was used. As the other yarn (B), the total fineness is 90 dtex and the number of filaments is 48, mainly composed of polyethylene terephthalate containing 1% by weight of colloidal silica fine particles having an average primary particle diameter of 0.05 μm. A semi-drawn yarn which is a filament and has an elongation of 105% was used. Next, the yarn (B) of the semi-drawn yarn that becomes the sheath yarn portion was subjected to relaxation heat treatment in a heater, and then subjected to turbulent flow processing with the yarn (A), and mixed to obtain a composite yarn. The fineness ratio of the yarn (A) at this time was 43%. The main blending conditions at this time were an AT-501 type blender manufactured by Aiki Seisakusho as the blending machine, the yarn speed was 350 m / min, the heat treatment condition was a temperature of 180 ° C., and the feed rate was 2 cores. 0.5% / sheath 9.0%. The yarn length difference of the obtained composite yarn was 7.3%.

Next, the composite yarn thus obtained was subjected to additional twisting with a twisting coefficient (K) = 20000 in the S and Z directions using a double twister twisting machine manufactured by Murata Co., Ltd., and then 80 ° C. X A wet heat twist set for 40 minutes was carried out. The obtained twisted yarn was woven with warp and weft yarns by alternately arranging two S and Z, respectively. Next, the fabric obtained was subjected to a relaxation scouring treatment (98 ° C., 20 minutes) and an intermediate setting treatment (180 ° C., 30 seconds) according to a conventional method, and then immersed in a 3% aqueous solution of caustic soda to obtain 20% alkali. After weight loss processing and dyeing with a commercially available black dye, reduction cleaning (80 ° C., 20 minutes) was performed according to a conventional method, followed by washing with water and drying.
Next, the fabric as the obtained base fabric is immersed in a treatment liquid prepared with the formulation shown below, and the treatment liquid is squeezed and adhered with mangle, and then dried at a temperature of 120 ° C. for 3 minutes, Heat treatment was performed at a temperature of 160 ° C. for 30 seconds. The film thickness at this time was 50 nm.
[Treatment solution]
Maxguard EC243 40g / l
(Manufactured by Kyo Silk Chemicals, fluorinated water repellent, refractive index 1.38)
“Tore Silicone” (registered trademark) SM8702 10 g / l
(Toray Silicone Co., Ltd., amine-modified dimethylpolysiloxane, refractive index 1.48)
“Sumitex Resin” (registered trademark) M-3 1 g / l
(Sumitomo Chemical, trimethylolmelamine)
"Sumitex Accelerator" (registered trademark) 1g / l
(Catalyst for trimethylol melamine, manufactured by Sumitomo Chemical)
The results are shown in Table 2. As shown in Table 2, in Example 1, a soft swelled fabric having excellent antistatic properties, water repellency and black color development was obtained.

(Example 2)
The same core-sheath antistatic stretched yarn as in Example 1 was used for the yarn (A). For the other yarn (B), a semi-drawn yarn having a total fineness of 90 dtex, a filament count of 48 filaments, and an elongation of 112%, usually comprising polyethylene terephthalate as the main component, was used. Next, both yarns were entangled and mixed in the same manner as in Example 1, and then subjected to composite false twisting at a temperature of 210 ° C. and a false twist coefficient of 24,000. The yarn length difference of the obtained composite yarn was 13.3%. Next, weaving and post-processing were performed in the same manner as in Example 1. The results are shown in Table 2. As shown in Table 2, also in Example 2, a swelled soft fabric excellent in antistatic properties, water repellency and black color development was obtained.

(Comparative Example 1)
Except for using a normal ordinary polyester drawn yarn (total fineness: 84 dtex, filament number: 18 filaments, elongation: 28%) as the yarn (A), entangled and mixed with the same method as in Example 1, and woven. The obtained woven fabric was evaluated. The results are shown in Table 2. As shown in Table 2, Comparative Example 1 was not a fabric having antistatic properties.

(Comparative Example 2)
Except that the treatment (resin processing) with the treatment liquid of Example 1 was omitted, the woven fabric was woven with entangled and mixed fibers in the same manner as in Example 1, and the resulting woven fabric was evaluated. The results are shown in Table 2. As shown in Table 2, Comparative Example 2 was not a woven fabric having water repellency and color development.

(Comparative Example 3)
The same core-sheath antistatic stretched yarn as in Example 1 is used for the yarn (A), and the other yarn (B) has a total fineness of 90 dtex usually composed mainly of polyethylene terephthalate and 48 filaments. A semi-drawn yarn which is a filament and has an elongation of 208% was used. Next, both yarns were entangled and mixed, and composite false twisting was performed at a temperature of 210 ° C. with a false twist coefficient of 24,000. The yarn length difference of the obtained composite yarn was 32.2%. Next, weaving was performed in the same manner as in Example 1, and post-processing was performed. The results are shown in Table 2. As shown in Table 2, Comparative Example 3 was not a fabric having water repellency, but had a soft texture.

  The woven or knitted fabric of the present invention is particularly suitable for a black formal material for women as clothing. In addition, it can be suitably used for sports clothing and lining such as raincoats, athletic wear, ski wear, and curtains, and is useful.

Claims (5)

A woven or knitted fabric in which a polymer film mainly composed of a fluorine-based compound and / or a silicone-based compound is applied to the fiber surface, and the yarns constituting the woven or knitted fabric are at least two types of polyester-based multifilament fibers. The composite yarn including the composite yarn, and at least one of the yarns (A) constituting the composite yarn is composed of a core-sheath type composite fiber in which an antistatic polymer is arranged in the core portion, and the other yarn A woven or knitted fabric characterized in that the yarn length difference with respect to the strip (B) satisfies the following formula (1).
3% ≦ Yarn length difference between yarn (B) and yarn (A) ≦ 30% Formula (1) The woven or knitted fabric according to claim 1, wherein a copolymer polyester containing a polyalkylene glycol compound is used for the core of the yarn (A). The woven or knitted fabric according to claim 1 or 2, wherein the surface of the yarn (B) has fine uneven holes. The knitted or knitted fabric according to any one of claims 1 to 3, wherein the composite yarn is additionally twisted within a range of 10,000 to 30,000 in a twist coefficient (K) in the following formula (2).
T = K × D ^−1/2 formula (2)
Where K: Twisting coefficient of composite yarn
T: Number of twists (T / M)
D: Fineness (dtex)   It is characterized in that a polymer film mainly composed of a fluorine compound or / and a silicone compound is applied to the fiber surface via a polymer comprising a compound having a methylol group or / and an acrylate polymer. The woven or knitted fabric according to any one of claims 1 to 4.