JPH04263679A - Production of opal finishing cloth - Google Patents

Abstract

PURPOSE:To obtain an opal finishing cloth rich in surface change and having stabilized quality by printing a woven and knitted fabric made of a dividing type conjugate fiber using a solvent capable of dissolving one component therefrom, and then subjecting the treated fabric to splitting treatment. CONSTITUTION:A woven and knitted fabric using a dividing type conjugate fiber e.g. consisting of a polyamide and polyseter, is printed using a solvent dissolving one component therefrom such as sodium alginate paste containing an alkali agent (e.g. NaOH) by a printing machine, and then dried and subjected to steaming treatment to dissolve the polyester component and washed with water. Then the treated fabric is subjected to splitting treatment so as to divide the dividing type conjugate fiber to provide the objective a flexible woven and knitted fabric rich in surface change.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel woven or knitted fabric and a method for producing the same. In detail, by printing a solvent that dissolves one component on a woven or knitted fabric using splittable composite yarns made of polyester and polyamide, we have created a new texture and light-transmitting fabric that dissolves one component and leaves only the other component. This invention relates to a method for producing knitted fabrics.

0002

[Prior art] Conventional opal processing involves methods such as blending synthetic fibers (polyester, nylon) and cellulose fibers, or using strong acid to damage the cellulose fibers, leaving only the synthetic fibers, or blending or knitting fabrics of synthetic fibers (polyester, nylon) and cellulose fibers. Opal cloth can be obtained by dissolving polyester with strong alkali and leaving only nylon, or by utilizing the difference in dissolution rate of alkali depending on the polyester component. However, with these methods, the system becomes thicker in the case of mixed weaving and mixed knitting, and is limited to thick fabrics, and there are strong problems when using the dissolution rate of polyester, and mixing is required to dissolve part of the warp and weft. It may be necessary to twist or blend, and the texture,
There were problems with the thickness of the dough and the cost. Furthermore, in recent years, advances in ultrafine synthetic fiber technology have made it possible to obtain woven and knitted fabrics with excellent drape properties. As ultrafine fibers become popular, differentiation is required, and surface changes in woven and knitted fabrics are required.

0003

[Problems to be Solved by the Invention] Unlike such conventional methods, the present invention provides a woven or knitted fabric that can be produced at low cost with a soft texture even if it is a thin woven or knitted fabric, and in which the ultrafine fibers have a surface change. .

0004

[Means for Solving the Problems] In order to solve the above problems, the present invention has the following configuration.

That is, a woven or knitted fabric using a splittable composite fiber made of polyamide and polyester is printed using a solvent that dissolves one component, thereby partially dissolving the polyester or nylon, and then splitting the fabric. This is a method for producing opal-treated cloth characterized by:

The splittable conjugate fibers in the present invention include adjacent conjugate fibers, radial conjugate fibers, irregular cross-section fibers, hollow fibers, and the like. Although the combination of the splitting component and the splitting component of these composite fibers is not particularly limited, it is preferably a combination of polymers that have poor mutual affinity. A combination of polyamide and polyester is preferably used. Suitable polyamides include, for example, nylon 6, nylon 10, nylon 11, nylon 12, nylon 66, nylon 610, and copolyamides containing these as main components, with nylon 6 and nylon 66 being preferred. used. Examples of polyesters that can be suitably used include terephthalic acid, isophthalic acid, and naphthalic acid.
A polyester synthesized from an aromatic dicarboxylic acid such as 2,6-dicarboxylic acid or an aliphatic dicarboxylic acid such as adipic acid or sebacic acid and a diol such as ethylene glycol or a diol compound such as neopentyl glycol is preferably used.

[0007] The texture of the woven or knitted fabric made using the above-mentioned composite fibers is not particularly limited, but includes plain weave, twill weave, matte, tricot, and smooth textures.

[0008] In the present invention, the solvent for dissolving one component includes, but is not limited to, sodium hydroxide, sodium carbonate, sodium silicate, etc., which are solvents for polyester in the case of alkaline agents. Acids include formic acid, acetic acid, etc., which are solvents for nylon.

Printing in the present invention refers to directly printing a paste containing a solvent onto a fabric. After printing, the polyester or nylon is partially dissolved by drying and passing through a steaming process. Direct printing includes hand printing, roller printing, screen printing, rotary screen printing, etc. The adhesive used for printing is preferably one that does not gel or reduce viscosity due to polyester or nylon solvents. Examples include sodium alginate, CMC, raw bean gum, guar gum, and starch. A solvent for polyester or nylon is added to this paste for direct printing, but the paste also contains dyes, dye dissolvers, dye accelerators (carriers), and dissolution promoters for dyeing polyester or nylon. It is also possible to

[0010] A woven or knitted fabric made of splittable composite fibers is refined without using a polyester or nylon solvent, and after the form of the fabric is stabilized, one or both of the polyester and nylon is dyed, if necessary. Then print using the method described above. Direct printing (overprinting) is preferred for printing, but resist printing and discharge printing methods can also be used in combination. After printing, it is dried, but in this case, extreme conditions are not preferred since some of the polyester or nylon printed parts are already dissolved during the drying process. The drying is carried out using a cylinder dryer, a hot flue dryer, a tensionless hot air dryer, etc., and the drying temperature is 80 to 160°C, more preferably 100 to 140°C.
It is ℃. After that, nylon,
The polyester is dissolved and dyed if necessary. Steaming can be done with either saturated steam or supersaturated steam.
100-135℃ for saturated steam, 1 for supersaturated steam
30°C to 200°C is preferred. After the steaming process, the dissolved polyester and nylon are removed from the fabric by washing with hot water or water, so using ultrasonic waves or beating the fabric is an easy and fast processing method. after that,
However, splitting the fibers before printing will damage the bulge and carrying stability of the fabric during the printing process, so splitting the fabric after printing is an important point of the present invention. Furthermore, it is possible to prevent damage to the split yarn (scratching, hitting, etc.) that occurs during printing. Splitting treatment methods include treating splittable conjugate fibers made of polyester and polyamide with an emulsified dispersion such as benzyl alcohol, or swelling and splitting the polyester side of splittable conjugate fibers made of polyester and polyamide, and then shrinking by heat treatment. Compression treatment of woven and knitted fabrics using splittable composite fibers made of composite types of polymers with poor mutual affinity,
Examples include a method in which one component of the polymer is then rubbed in a liquid stream containing a drug that swells it. Alternatively, polyester can be partially dissolved and divided with an alkali. Opal processing as referred to in the present invention is a process in which a part of a material consisting of multiple components is dissolved using a single-component solvent to obtain a surface change in the processed part, and the unprocessed part and the processed part are exposed to light. The transparency is different and the texture is softer.

[0011]

[Examples] The present invention will be explained in detail below with reference to Examples. Example: 70% split polyamide component, 30% polyester component to be split, 8 split split composite fibers 75d were made into warp and warp so that the single fiber fineness after splitting was 0.6 denier and 0.4 denier, respectively. A woven fabric with a twill structure was obtained using the method. Next, the obtained fabric was scoured using an open soaper under the following conditions. (Scouring conditions) Nonionic surfactant 1 g/l Sodium tripolyphosphate 1 g/l 95° C. x 20 sec Thereafter, water washing was performed for 8 seconds using the same open soaper. Then, using a short loop at 130°C x 90 seconds
was dried. A small flower pattern was printed using an auto screen printing machine under the following conditions. The shape of the scale and the printing pressure were adjusted so that the adhesive adhesion of the printed part was 160 g/m2. Immediately after printing, hot-fluid drying is performed, followed by high-pressure steamer drying for 13 minutes.
Steaming treatment was performed at 0°C for 20 minutes. After that, water washing was performed using a continuous wince machine. At this time, ultrasonic cleaning was set in the second and third baths to improve the water washing effect. The condition of the fabric at this time is that the nylon remains in the printed area and has good light transparency. The non-printed part is not split, so it is a flat, stiff fabric. The splitting process was performed using a jet dyeing machine under the following conditions. (Splitting conditions) NaOH (38Be') 10% sol1
20° C. x 30 minutes at a bath ratio of 1:10. Thereafter, neutralization treatment, washing with water, and drying were performed in the usual manner. The printed floral pattern is more see-through than the other parts, creating a surface effect unique to opal processing. The part that is not opalized has a beautiful surface with no scratches. As a comparative example, a fabric that was processed under the same conditions by woven fabric, splitting processing, and opal processing had significant scratches and scratches, and had little commercial value. Also, the texture is thinner and less voluminous than the product of the present invention.
Ohaal processing surface per thread Texture Fabric → Ohaal processing → Splitting processing (
Example 1) ○ ○
○Woven fabric → Split processing → Ohal processing (Comparative example 1)
) ○ ×
×

Example 28 gauge smooth was knitted using the same yarn as in Example 1. The obtained knit was refined using a wince. Scouring conditions Nonionic surfactant 1g/l
95°C x 15 minutes, bath ratio 1:30, and then water washing was performed twice at 40°C x 10 minutes using the same wince. Next, it was dried at 120° C. for 2 minutes using a short loop dryer. A polka dot shape with a diameter of about 2 cm was printed using a rotary screen printing machine. The printing conditions are as follows. SUMINOL MILL RED RS (
(manufactured by Sumitomo Chemical) 3 parts NaOH (38
Be')
10 parts Sodium alginate (12%)
60 parts water


27 parts
total
Printing conditions were adjusted so that the amount of glue adhered to the 100-copy portion was 150 g/m2. After printing, hot air drying was performed at 120° C. for 90 seconds. After that, I washed it with hot water and cold water using the Wins that I had used during scouring. Hot water washing conditions: nonionic surfactant 1g/l Na2 CO
3 0.5 g/l Bath ratio 1:35 60°C x 15 minutes. Thereafter, it was washed twice with water at room temperature for 5 minutes. The fiber splitting was performed using a bath in which benzyl alcohol 20 Sunmol BK (manufactured by NICCA Chemical Co., Ltd.) was emulsified and dispersed in water at a bath ratio of 30 to 95° C. for 30 minutes using a wince. After that, it was neutralized with CH3 COOH and then stained. Foron Blue FBL 1%o
wf dispersant
0.5%owfCH3 COOH
0.3%owf
A liquid washing dyeing machine was used for dyeing at 130° C. for 20 minutes at a bath ratio of 1:15. Thereafter, water washing and drying were performed in the usual manner. As Comparative Example 2, knitting → splitting → dyeing → opal processing was performed under the same conditions. Opalized surface Scratches, hits Texture Example 2 ○
○ ○ Comparative example 2 ○
× ×

[0013]

[Effect of the invention] By printing splittable composite fibers made of polyamide and polyester with a solvent that dissolves one component, one component is dissolved and the other component is left behind, and then,
By splitting the splittable composite fibers, a soft woven or knitted fabric with stable quality and surface changes can be obtained.

Claims (1)

[Claims] Claim 1: A woven or knitted fabric using a splittable composite fiber made of polyamide and polyester is printed using a solvent that dissolves one component, thereby partially dissolving the polyester or polyamide, and then splitting the fabric. A method for producing an opal-treated cloth characterized by: