JP2650490B2 - Manufacturing method of water-repellent, deep-colored fiber structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a fibrous structure having excellent durability, high water repellency and excellent deep color.

[Related Art] In recent years, demands for water repellency have been increasing, mainly in the field of sports clothing and uniform clothing, and accordingly, there is a strong demand for improved levels of water repellency in dry cleaning and washing.

At present, water repellency processing of cloth is performed by treating the cloth with silicone or a fluorine water repellent.

However, the silicone-based water repellent easily swells and dissolves in a dry cleaning solvent such as trichlene or perchrene, and has little durability to dry cleaning. In addition, silicone alone has a low level of water repellency and cannot respond to recent demands for high water repellency.

On the other hand, fluorine-based water repellents have a high initial level of water repellency, but have the disadvantage that the resin film is hard and brittle, causing cracks in the resin film due to the fibrous action during washing or wearing, resulting in reduced water repellency. However, none of them has been satisfactory with respect to recent high demands.

In addition, conventional water-repellent products made of silicone or a fluorine-based resin are subjected to washing, dry cleaning, and other processes to obtain a methyl group that contributes to water repellency or-
There was a serious drawback that _three CF groups and the like penetrated into the resin film and the water repellency was greatly reduced.

In the field of sports clothing and black formal, there is a strong demand for deep color and sharpness from the viewpoint of water repellency and fashionability, and various studies have been made.

Silicone-based and fluorine-based water-repellent agents generally used as water-repellent agents bring about deep coloration at the same time, but as described above, since there is a problem in the durability itself of the resin,
The decrease in water repellency and the decrease in deep color occur simultaneously.

On the other hand, with respect to deep coloration, many studies have been made especially on polyesters, in which colloidal silica or the like is added to the polymer to create fine irregularities by reducing the alkali, and those that form irregularities on the fiber surface by plasma etching. However, applying a durable water-repellent treatment to this means attaching a hydrophobic water-repellent resin to the surface of the hydrophilicized fiber, so that the adhesiveness of the resin is sufficient. However, it does not have both durable water repellency and deep color.

[Problems to be Solved by the Invention] An object of the present invention is to have high water repellency, deep color, and
An object of the present invention is to provide a method for producing a fabric having excellent durability against washing or dry cleaning.

[Means for Solving the Problems] The present invention has the following configuration to achieve the above object. That is, the method for producing a water-repellent, deep-colored fiber structure of the present invention is characterized in that the fiber structure is irradiated with ultraviolet rays and then treated with a fluorine-based water-repellent agent and / or a silicone-based water-repellent agent. Is what you do.

[Function] The present invention provides a fiber structure that has been subjected to ultraviolet irradiation treatment and then processed with a water-repellent agent to improve the performance of the agent.
%, And the durability of the working agent film can be improved. The silicone-based water-repellent agent used in the present invention may be a silicone-based compound that is generally used as a water-repellent agent or a softening agent. For example, dimethylpolysiloxane, dimethylpolysiloxane molecular terminals or side groups may be used. An oil or emulsion of a polysiloxane compound modified by introducing a hydroxyl group, an amino group, hydrogen, an epoxy group, a polyether group, or the like into a chain can be used.

Further, as the fluorine-based water repellent, a fluorine-based compound such as a polyacrylic ester composed of polyacrylic acid and a fluorine-based alcohol can be used.

As such a compound, for example, polypentadecafluorooctyl acrylate, polytrifluoroethyl acrylate, polytrifluoroethyl acrylate, or the like, or a fluorine-based compound such as a tetrafluoroethylene-hexafluoropropylene copolymer can be used. .

The ultraviolet irradiation process of the present invention is a process of irradiating ultraviolet rays from a light source such as a high-pressure mercury lamp, a metal halide lamp, a xenon lamp, and a low-pressure mercury lamp.

As the ultraviolet rays, those having a wavelength of preferably 300 nm or less are preferable, and a low-pressure mercury lamp having peaks at 184.9 nm and 253.7 nm is particularly preferably used. Irradiation intensity of such ultraviolet radiation at a wavelength of 253.7 nm, 3 mW / cm ² or more, preferably, 10 mw / cm ² or more is good. An irradiation time of about seconds to minutes is sufficient, but the irradiation intensity and irradiation time may be set according to the purpose. For example,
As the ultraviolet irradiation treatment, at a wavelength of 253.7 nm, 45 mW /
Irradiation in a range of about 5 to 60 seconds in cm ² may be excellent in water repellency, deep color, and durability.

In the present invention, after applying the ultraviolet irradiation to the fiber structure, a heat treatment at 160 to 200 ° C. may be further performed.

When the water repellent is applied after the irradiation of the ultraviolet ray of the present invention, the effect of improving the uniform adhesion of the water repellent to the fiber surface and the adhesion thereof is achieved.

Due to the uniform thin film effect of the fluorine-based water repellent and the silicone-based water-repellent, a high deep-colored property can be obtained, and, of course, a product having both water repellency can be manufactured with high durability.

The water-repellent agent of the present invention may contain additives such as a cross-linking agent, an antistatic agent, a softener, and a hard finish within a range not to impair the effects of the present invention.

The fibrous structure of the present invention means a natural fiber, a regenerated fiber synthetic fiber, or a knitted woven fabric, a nonwoven fabric, a thread, a string, or the like, made of fibers such as a cotton wool obtained by mixing these fibers. is there.

[Examples] The performance values shown in Examples and Comparative Examples were measured by the following methods.

Water repellency: Test method specified by JIS-L1079 (spray method)
This was measured and evaluated.

The durability was determined by repeating the following washing or dry cleaning test 20 times and then performing the above-described water repellency test.

 The relationship between the appearance state and the evaluation score is as follows.

100 points: no adhesion on the surface 90 points: slight adhesion on the surface 80 points: drop point of water on the surface indicates wetting 70 points: partial wetting on the entire surface 50 points : The whole surface is wet 0 points: The surface is completely wet Washing is performed by automatic reversing spiral electric washing machine (Toshiba VH1150)
0.2% weak alkaline detergent at 40 ℃ ± 2 ℃ (JIS)
Add liquid (as specified in K337), wash with extra cloth for a bath ratio of 1:50, wash under strong conditions for 10 minutes, then drain and wash with water 5
This was repeated 20 times, with the step of separating once, followed by air drying.

Dry cleaning is a dry cleaning cylinder (cylinder of about 22cm in diameter and about 33cm in length.
Put room temperature perchlorethylene 3.8 into a 50 ° rotating shaft at 45-50rpm), put 230g test piece into it, and rotate it for 10 minutes.
After repeating 50 times, it was air-dried.

Color development: Digital colorimetric color difference calculator (Suga Test Machine Co., Ltd.)
Manufactured), the L value of the cloth was measured. The L value is an index of the luminous density of a color, and a smaller value indicates a deeper color.

The discoloration of washing and dry cleaning is obtained by washing the water repellency test in the same manner and then measuring the L value.

Examples 1 to 6 and Comparative Examples 1 to 4 A cashmere skin made of a polyester-processed yarn having a length of 75 denier and 48 filaments (manufactured by Toray Industries, Inc.) and a polyester-processed yarn having a weft 100 denier and 24 filaments (manufactured by Toray Industries, Inc.) After scouring the fabric by a conventional method, after heat setting at a temperature of 180 ° C., Dyanix Black BG-
FS (Diamix Black BG-FS) 14% owf, bath ratio 1:30, 130
Staining was performed at 60 ° C for 60 minutes. Subsequently, it was subjected to reduction washing, drying and finishing and setting at 160 ° C. to obtain a black fabric having a width of 150 cm, a warp yarn density of 154 yarns / inch, and a weft yarn density of 110 yarns / inch.

 This dyed fabric was subjected to ultraviolet treatment under the following conditions.

Was treated respectively by (UV irradiation) low-pressure mercury lamp 500W illuminance 45 mW / cm ² (253.7 nm) processing time 30,120sec according ultraviolet irradiation-treated fabrics following mixing treatment liquid.

 The types and concentrations of the water-repellent agents used are as follows.

(A) Toray Silicone SH8240 (non-ionic) (silicone resin, manufactured by Toray Silicone Co., Ltd.) 15 g / (B) NK Guard FG270 (cationic) (fluorocarbon resin, manufactured by Nika Chemical Co., Ltd.) 15 g / (C ) Asahigard AG710 (non-ionic) (Fluorine-based resin manufactured by Meisei Chemical Co., Ltd.) 20 g / resin and cross-linking agent to be mixed with the water-repellent agent and the concentration are as follows.

Sumitex Resin M-3 (Melamine resin, Sumitomo Chemical) 3g / Sumitex Resin ACX (Cross-linking catalyst, Sumitomo Chemical) 0.3g / Nicepole FE22 (Antistatic agent, Nikka Chemical) 10g / After immersion, squeeze with a mangle and apply 80% of the treatment liquid based on the weight of the fabric.
Drying was performed at 0 ° C. for 3 minutes.

 Next, heat treatment was performed at 180 ° C. for 1 minute.

The water repellency, the deep color and the durability of the obtained woven fabric were evaluated, and the results are shown in Table 1.

Examples 1 to 6 had higher deep color and water repellency and were more excellent in durability than those of Comparative Examples 1 to 4.

Example 7, Comparative Examples 5 to 6 A surge composed of a polyester / wool-blend black yarn-dyed yarn blended with 20% wool was irradiated with the ultraviolet rays of Example 1 for 30 seconds.
c, then NK Guard FG-300 (fluororesin) 20
g / aqueous solution, squeezed with a mangle to 80% of the weight of the fabric, dried at 130 ° C. for 4 minutes,
A heat treatment was performed at 2 ° C. for 2 minutes (Example 7).

As Comparative Example 6, one prepared in the same manner as in Example 7 but not irradiated with ultraviolet rays was prepared.

Table 2 shows the results of the evaluation of the deep color, the coloring, and the durability. In addition, the thing which did not process ultraviolet rays and resin was shown as Comparative Example 5.

From Table 2, it was found that the product of Example 7 had better color development, water repellency and durability than those of Comparative Examples 5 and 6.

[Results of the Invention] The present invention can provide a fibrous structure having excellent durability and excellent water repellency and deep color at the same time. Therefore, the present invention provides a fibrous structure suitable as an industrial material and a garment material. Can be.

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location // D06M 101: 00 D06M 10/00 K (56) References JP-A-1-40664 (JP, A) JP-A-56-123479 (JP, A) JP-A-1-260055 (JP, A) JP-A-4-146264 (JP, A) JP-A-2-114137 (JP, A)

Claims (2)

(57) [Claims] 1. A method for producing a water-repellent, deep-colored fiber structure, which comprises irradiating the fiber structure with ultraviolet rays and treating it with a fluorine and / or silicone water-repellent agent. 2. The method according to claim 1, wherein the ultraviolet ray contains a wavelength component of 300 nm or less.