JP3726373B2 - Black color polyester fiber fabric and method for producing the same - Google Patents

Description

表１から明らかな用に、実施例１は、発色性、摩擦堅牢度が良くしなやかであるのに対し、比較例１は、摩擦堅牢度が良くドレープ性も良いが、満足な黒発色は得られなかった。比較例２は、黒発色が良くドレープ性も良いが、摩擦堅牢度が不合格であった。減量処理を行わない比較例３は、満足なドレープ性が得られなかった。すなわち、本発明の黒色織物は鮮明で深みのある黒色を呈していることが数値的にも認められた。
【００３２】
【発明の効果】
本発明によれば、堅牢性に優れ、しなやかさを合わせもつ優れた黒発色ポリエステル系繊維布帛を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a black-colored polyester fiber fabric excellent in fastness, rich in tasteful black color development, and excellent in drape, and a method for producing the same.
[0002]
[Prior art]
Conventionally, the refractive index of polyester is higher than that of acetate, acrylic, rayon, nylon, etc., so the color development is inferior and the hue is pastel.
[0003]
In order to improve the color developability of polyester, it is conceivable to attach low refractive index substances such as silicon, silica, fluorine, urethane, etc. to the fiber surface, or to create microvoids on the fiber surface to reduce light reflection. The effect is obtained.
[0004]
Further, in order to fundamentally improve the black color developability, it is essential to increase the dye concentration, and high density dyeing is necessary.
[0005]
[Problems to be solved by the invention]
There is also a method of dyeing with black disperse dye using carbon black-added black dyeing, but if we do not perform weight reduction processing, a draped and supple fabric will not be obtained, and carbon black-added black original yarn using woven fabric will be weight-reduced In this case, there was a problem that the eluted carbon black adhered to the processing machine and became dirty and the friction fastness of the obtained product was extremely poor, so that the product performance could not be obtained.
[0006]
The present invention eliminates the above-mentioned drawbacks of the prior art, and is a pleasing black coloring polyester fiber fabric having various hues while maintaining color developability while maintaining low color fastness and friction whitening, and a method for producing the same Is intended to provide.
[0007]
[Means for Solving the Problems]
The present invention employs the following means in order to solve such problems. That is, the method for producing a black-colored polyester fiber fabric of the present invention comprises dissolving a sheath component of a fabric comprising a core-sheath type composite fiber in which the core component is polyester containing a pigment and the sheath component is made of nylon. It is characterized by being dyed with a disperse dye after being decomposed and removed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention provides a polyester fiber fabric that is supple, has low color fastness and friction whitening, maintains excellent color developability, particularly black color developability, and is excellent in tasteful color developability including various hues. In order to provide it, we have intensively studied and solved the above problems all at once by using pigment-dyed fibers made from a pigment-dispersed polymer and exhausting dispersed dyes of various hues. It has been clarified to do.
[0010]
The polyester in the present invention is mainly composed of dimethyl terephthalate and ethylene glycol, as long as it can withstand dissolution and removal of the sheath even if a third component sulfonated aromatic dicarboxylic acid-modified polyester is appropriately added. I don't care. The present invention is characterized in that a pigment and a disperse dye are contained inside such a polyester fiber. Such a polyester fiber is generally known as a pigment original fiber. For example, in the case where such a pigment original fiber is a black pigment, that is, a carbon black original fiber, a material composed of polymer particles obtained by coating the carbon black with a polyester polymer is extruded from a base and stretched. is there. When the pigment primary fiber thus obtained is dyed (exhausted) with a disperse dye, the disperse dye is exhausted by the polymer coating of the polymer particles constituting the polyester fiber. When, for example, a printing method is employed as the dyeing method, a product in which the disperse dye is applied partially or in a pattern is obtained.
[0011]
In order to enhance the color developability, it is preferable to provide a low refractive index material coating on the surface of the polyester fiber.
[0012]
The fabric referred to in the present invention represents at least one selected from a woven / knitted fabric, a nonwoven fabric and a net-like material.
[0013]
As the pigment as used in the present invention, either an organic pigment or an inorganic pigment can be used, but an inorganic pigment is preferable in terms of durability. A plurality of these pigments may be mixed. Among the color developability, black color development is known to be extremely difficult, but the present invention is extremely effective for this black color development.
[0014]
When carbon black is used as a pigment in the present invention to provide a fiber having excellent black color developability, a carbon black having an average primary particle diameter of 20 to 70 mμ is preferably used. Those having a thickness of less than 20 mμ are reddish, which is characteristic of carbon black, and those having a thickness exceeding 70 mμ are not preferable because the depth of black is reduced. Further, the content of the original fiber is 0.5 to 4.0% by weight, and more preferably 1.0 to 3.0% by weight.
[0015]
As a method for producing a polyester fiber fabric excellent in black color developability according to the present invention, for example, a fabric made of a pigment-primed polyester fiber in which the pigment particles are mixed and dispersed in a polyester polymer is dispersed with a disperse dye. A core-sheath type composite fiber comprising a dyeing method and a core-component polyester containing a pigment, and a sheath component comprising a polymer that does not contain a pigment that is easily dissolved or decomposed and removed as compared with the core-component polymer. After the sheath component is dissolved or decomposed and removed, the fabric can be provided by any one of the methods of dyeing with a disperse dye. According to the latter method, further excellent drape properties can be obtained. The fabric which has can be provided.
[0016]
The core-sheath composite fiber is a fiber in which two different types of polymers are arranged substantially concentrically. The inner side is called a core, and the outer side surrounding the core is called a sheath.
[0017]
The core / sheath ratio of the core-sheath composite fiber of the present invention is 95/5 to 50/50, more preferably 90/10 to 70/30. When the ratio of the core is 95 or more, the improvement in the drape property by dissolving and removing the sheath is not satisfactory, and when it is 50 or less, the strength is greatly reduced after the sheath is dissolved and removed, and the commercial value is lost. The present invention dissolves and removes the sheath and provides a good drape.
[0018]
For example, if the sheath is nylon, the sheath is made of an acid such as formic acid, and if it is a sulfonated aromatic dicarboxylic acid-modified polyester containing sodium sulfoisophthalic acid, an alkali treatment or an alkali treatment after embrittlement treatment with an acid is performed. Also, hot water-soluble sulfonated aromatic dicarboxylic acid modified polyester containing sodium sulfoisophthalic acid or isophthalic acid can be removed without dissolving the core polymer by dissolving and removing the sheath with hot water. There is no limitation. Moreover, the disperse dye of this invention should just be a disperse dye which can be dye | stained to a polyester fiber.
[0019]
The low refractive index substance in the present invention is a substance that generally improves the color developability of dyed polyester fiber, and means a substance having a lower refractive index than that of polyester fiber such as silicon, silica, fluorine, urethane, etc. The adhering method includes an immersion exhaust method, a pad method, and the like, and any method may be used. In addition, various resins, softeners, antistatic agents, water repellents, SR agents and the like may be used to fix the low refractive index coating on the fiber surface.
[0020]
The fastness and black color development of the present invention can be achieved by further dyeing a core polyester fiber containing carbon black with a disperse dye. Although pigment (especially carbon black) alone can provide color developability (black color development), it alone has low commercial value. By further dyeing with a disperse dye, it is possible to achieve dyeing with a small amount of dye and at a density that does not cause a problem with fastness, and to achieve a target black color development. Such black-colored polyester fiber fabric is suitably used for school clothes, women's / gents use, Japanese clothing and lining, and is particularly suitable for black formal use.
[0021]
【Example】
Example 1
Copolymer containing 12 mol% 5-sodiumsulfoisophthalic acid and 18 mol% isophthalic acid, the main acid component of which is terephthalic acid, based on a polyester containing 1.5% by weight of carbon black having an average primary particle size of 43 mμ Weaving a plain fabric with a warp density of 90 / inch and a weft density of 80 / inch using a 75-denier 36-filament core / sheath composite fiber with a polyester / sheath core / sheath ratio of 80/20 did.
[0022]
The obtained woven fabric was treated at 130 ° C. with a net conveyor type relaxation heat treatment machine without wrinkles, and intermediate setting was performed with a pin tenter at 180 ° C. without pulling with a vertical width. Next, using a 0.5% caustic soda solution with a liquid dyeing machine, 20% sheath was dissolved and removed at 100 ° C. for 15 minutes, and then Disperse Black T-1 was used at 10% based on the fiber weight. After dyeing at 130 ° C. for 60 minutes, it was subjected to reduction cleaning with hydrosulfite, caustic soda and a cleaning agent and dried. A 45 g / l aqueous solution is made from the obtained black dyed fabric using a deep color processing agent SH8710 manufactured by Toray Silicon Co., Ltd. After padding with the solution, it is dried at 110 ° C. for 2 minutes and 160 ° C. for 1 minute for deep color Processing was performed.
[0023]
Comparative Example 1
A 75-denier 36-filament polyester was used for warp and weft to weave a plain fabric with a warp density of 90 / inch and a weft density of 80 / inch.
[0024]
The woven fabric obtained in the same manner as in Example 1 was treated at 130 ° C. with a net conveyor type relaxation heat treatment machine without wrinkling, and intermediate setting was carried out with a pin tenter at 180 ° C. without pulling with a vertical side. Next, after reducing the weight by 20% under the conditions of 100 ° C. and 130 minutes using a 3% caustic soda solution in a liquid dyeing machine, the same processing as in Example 1 was performed.
[0025]
Comparative Example 2
Weaving a plain fabric with a warp density of 90 / inch and a weft density of 80 / inch using polyester containing 1.5% by weight of carbon black with an average primary particle diameter of 75 denier 36 filaments of 43 mμ for warp and weft did.
[0026]
The woven fabric obtained in the same manner as in Example 1 was treated at 130 ° C. with a net conveyor type relaxation heat treatment machine without wrinkles, and intermediate setting was carried out with a pin tenter at 180 ° C. without pulling with a vertical side. Subsequently, after reducing the weight by 20% under the conditions of 100 ° C. and 115 minutes using a 3% caustic soda solution in a liquid dyeing machine, the same processing as in Example 1 was performed.
[0027]
Comparative Example 3
Processing was carried out in the same manner as in Comparative Example 2 without reducing the amount of the cloth in the intermediate set up in Comparative Example 2.
[0028]
The color developability was measured with the MINOLTA CR-310 for the four black fabrics obtained here, and the L value as a density index was determined from the Lab color difference formula. The results are shown in Table 1. Indicated. The L value becomes darker as the value is smaller.
[0029]
The fastness to friction is an evaluation result of the fastness to friction specified in JIS L 0849 (see the degree to which a dyed fiber product transfers color to other fiber products due to friction in practical use). The higher the grade, the better the fastness.
[0030]
The suppleness was determined based on the following criteria based on the state in which the cloth hangs down due to its own weight and the sensory evaluation by handling.
[0031]
Judgment criteria ○: excellent in flexibility Δ: slightly lacking in flexibility ×: lacking in flexibility [Table 1]

As apparent from Table 1, Example 1 has good color development and friction fastness, while Comparative Example 1 has good friction fastness and good drape, but satisfactory black color development is obtained. I couldn't. In Comparative Example 2, the black color was good and the drape was good, but the fastness to friction was unacceptable. In Comparative Example 3 in which no weight reduction treatment was performed, satisfactory drapeability was not obtained. That is, it was numerically recognized that the black fabric of the present invention had a clear and deep black color.
[0032]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it is excellent in toughness and can provide the outstanding black color development polyester-type fiber fabric which has suppleness.

Claims (1)

A fabric comprising a core-sheath type composite fiber in which the core component is polyester containing a pigment and the sheath component is made of nylon , and is removed by dissolving or decomposing the sheath component and then dyed with a disperse dye. A method for producing a black-colored polyester fiber fabric.