JPS6147886A - Production of multicolor knitted fabric - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a woven or knitted fabric in different colors that has a soft texture and excellent strength. 11 in the present invention
+m product means either a woven fabric or a knitted fabric.

Traditionally, there are 11 unique ways to obtain things.

There are two methods: a yarn-based dyeing method and a reverse dyeing method.

Due to production and cost considerations, different colors are often dyed using piece dyeing methods.In addition, different colors of woven and knitted fabrics, which have a flexible texture and excellent strength required for sports clothing, are produced using different synthetic fiber yarns. It is made of a combination of strips.

As a synthetic fiber with a flexible texture and excellent strength,
Polyamide synthetic fibers such as nylon are a typical example, and in order to obtain a unique color tone using only these polyamide synthetic fibers, regular type threads that can be dyed with acid dyes,
There is a method that uses a combination of acid dye and dye type yarn whose dyeing seat is blocked with additives, but in this case, it is limited to light and shade dyeing in similar tones, and a unique color effect is expected. However, there is also a method of combining cationic dye-dyeable polyamide synthetic fiber yarn containing a sulfonate compound with ordinary acid dye-dyeable polyamide fiber, which allows you to create different color tones using acid dyes and cationic dyes. It is also possible to obtain woven or knitted fabrics of different interwoven or interwoven fabrics, but in this case there is currently a problem with the color fastness of the cationic dye-dyeable polyester fibers.

In other words, it has poor sunlight fastness and is subject to significant discoloration and fading when washed with hot water containing surfactants.Thus, although it can be used for industrial materials and other applications that do not require washing with detergent, it cannot be used for clothing. The current situation is that this is not possible.

-11 When obtaining a woven or knitted fabric with a different color tone by combining ordinary polyester synthetic fibers and polyamide synthetic fibers, it must be dyed at a high temperature (130°C), and the polyamide synthetic fibers must be dyed at high temperatures (130°C). Severe damage will reduce the strength of the mi. In addition, unique mwcw products can be obtained by combining polyester synthetic fibers and cationic dye-dyable polyester fibers, but in this case, both hand and strength are inferior to polyamide synthetic fibers, and the disperse dyes in both fibers are inferior to those of polyamide synthetic fibers. When dyeing in combination with cationic dyes, it is very difficult to match one color.Generally, the cationic dyeable side is dyed a dark color, and the regular polyester side is dyed a medium color.
It has problems such as the need to obtain a different color tone as a light color.

In order to solve these problems, the present inventors conducted extensive research and found a combination of different types of fibers that can produce any different color tone at a dyeing temperature of 110° C. or lower.

In this way, we succeeded in producing a uniquely colored woven or knitted fabric with a flexible texture and excellent strength.

In other words, the present invention provides a cationic dye-dyeable polyester synthetic fiber yarn and a polyester synthetic fiber yarn copolymerized with sulfoisophthalic acid or its metal salt in a range of 0.8 mol% to 2.5 mol%. A woven or knitted fabric is obtained by mixing or knitting, and the woven or knitted fabric is dyed with a cationic dye and an acid dye.
The gist of the present invention is a method for producing a woven or knitted fabric in different colors, which is characterized by dyeing at a temperature of 10° C. or lower. The term "metal salt" as used herein means an alkali metal salt such as potassium salt or sodium salt.

Hereinafter, one aspect of the present invention will be explained in detail.

The cationic dye-dyable polyester fiber used in the present invention is! 6! A cationic dye dyeable product made by copolymerizing sodium sulfoisophthalic acid or its metal salt (hereinafter collectively referred to as SIP) in a range of 0.8 mol% to 2.5 mol%, taking into consideration textile properties. It is a polyester synthetic fiber yarn (hereinafter referred to as CDP). With this invention, SIP
The reason why the number of moles added is limited to the range of 0.8 mol% to 2.5 mol% is as follows. If the amount is less than 0.8 mol %, the dyeability becomes extremely poor and a sufficient hue cannot be obtained from the cationic dye. Moreover, if it exceeds 2.5 mol %, the strength of the fibers may decrease during high-temperature dyeing (130° C.), or when false twisting is required, the physical properties may decrease due to the heat at that time. Therefore, the range in which dyeing with cationic dyes is possible and where there is relatively little deterioration in fiber properties is STP 0.
．． The range is 8 mol% or more and 2.5 mol% or less. C
The method for manufacturing DP is not particularly limited. In the present invention, the number of moles of SIP in CDP is limited in order to prevent a decrease in strength and hardening of the fiber due to dyeing temperature, especially in the combination of CDP and a polyamide-based synthetic fiber described later.

The reasons why CDP is used as one of the combinations of different fibers and dyed with cationic dyes to obtain different color tones are that (1) cationic dyes generally have clear hues, and (2) cationic dyes have a brighter color than disperse dyes. This is because (3) cationic dyes have good wet fastness and sublimation fastness, and there is little loss of fastness during resin processing, and (3) cationic dyes cause little contamination of other fibers. The reason why polyacrylic synthetic fibers are not used in the present invention is that they are inferior in strength.

The reasons why polyamide synthetic fibers are used as one of the other combination fibers are that they have excellent strength, are easy to obtain soft textures, can be dyed with acid dyes, do not dye with the aforementioned CDP, and are highly pigmented. This is because color can be obtained.

Polyamide synthetic fibers used in the present invention include nylon 6, nylon 66, and nylon 610, but nylon 6, which is produced by ring-opening contact polymerization of ε-caprolactam in the presence of water, is suitable for the present invention due to its dyeing aspect. Preferably used.

The GDP and polyamide yarns are raw yarns or false twisted yarns with a total denier of about 30 to 1000 deniers and moderately twisted. When interweaving these yarns, CDP and polyamide yarns may be used separately for the warp and weft, or both fibers may be used one or every few times for the warp or weft, or both fibers may be used in pairs. It can also be used as thread. When performing cross-knitting, it is sufficient to use CDP and polyamide yarns for one or every few threads when feeding the yarn, and as long as the texture during cross-weaving and cross-knitting is a structure that looks different in color after dyeing. , any organization can be selected.

In the present invention, one of these woven fabrics is dyed with a cationic dye and an acid dye at a temperature of 110°C or less.
A major feature of the present invention is that the CDP and polyamide fibers are dyed at a temperature of 110° C. or lower. The reason why the dyeing temperature is 110°C or less is 9.The CDP used in the present invention can be dyed at 110°C or less, and the polyamide synthetic fiber can also be dyed at about 110°C, and the dyeing temperature is 110°C. This is because if the temperature is increased above this level, the strength of both fibers will decrease and the texture will begin to harden, which is undesirable.

The present invention has one or more configurations, and according to the present invention, there is provided a cationic dye-dyeable polyester synthetic fiber copolymerized with sulfoisophthalic acid in a range of 0.8 mol% to 2.5 mol%. Since the yarn and polyamide synthetic fiber yarn are used, the different color effect is very clear.Moreover, when dyeing, it is dyed at a temperature of 110℃ or less using cationic dye and acid dye, so it is suitable for high-temperature dyeing. There is no problem of a decrease in strength or a decrease in hand feel. Therefore, the different-colored woven or knitted fabric according to the present invention can simultaneously satisfy a soft texture and excellent strength.

Hereinafter, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to this.

Example 1 Nylon 6 false twisted bulky thread (prite thread) 570 for warp
Cation dyeable polyester fiber (bright yarn) 15 using denier/70 filament and copolymerizing 1.5 mol% of 5-sodium-sulfoisophthalic acid in the weft.
A mixed woven fabric with a 2/2 twill structure (twill structure) with an upward slope to the right was woven using four strands of 0 denier/48 filament twisted and false-twisted bulky yarn. The weaving density is 54 warp threads/inch.
The number of weft threads was 50/inch.

After normal relaxing scouring, drying and presetting.

100'C using a jet dyeing machine using the dyeing recipe 1 below.

Staining was performed for 60 minutes.

Prescription 1 Kayanor Milling Yellow RW l, Q% o, w
, f.

(Acidic dye manufactured by Nippon Kayaku Co., Ltd.) Kayanol Milling Red RSO, 3% O, Zeng, f.

(Acidic dye manufactured by Nippon Kayaku Co., Ltd.) Diacrylic violet BL-PF O, 3% O,
w, f.

(Cationic dye manufactured by Mitsubishi Chemical Industries, Ltd.) Daidesper AZ 2% o, w,
f.

(Level dyeing and dispersing agent manufactured by -1 Shasha Yushi Kogyo Co., Ltd.) Acetic acid (48%) 0.4
After cc/1 dyeing, the dyed products were washed, dried, and afterset, and were dyed with distinct colors in vivid yellow and violet in a twill pattern without contaminating each other. The texture of the fabric is made from thick threads of approximately 500 denier.

It was extremely flexible and had excellent strength even though it was used in a latitude.

Furthermore, the color fastness of the finished product with water repellency was not particularly problematic, and it had fashionability suitable for sports clothing such as mountain climbing clothing and rider clothing.

Example 2 False twisted bulky textured yarn 150 denier/72 filament of polyester fiber copolymerized with 1.5 mol% of 5-sodium-sulfoisophthalic acid and 100 denier/48 filament false twisted bulky textured yarn of nylon 6 fiber were used. Te, 2
Using a 0-gauge jacquard knitting machine, a knitted fabric with a pattern of falling stripes at intervals of about 2 mm in width was knitted. The obtained area was then relaxed scoured, dried, preset, and dyed under the same dyeing conditions as in Example 1. The surface of the obtained knitted fabric has a yellow and violet striped pattern 1
The fabric had a pique pattern of yellow and violet on the front and back sides, and the hues were clear without contaminating each other, and the texture was flexible and there were no problems in terms of physical properties, making it a high-quality knitted fabric with a unique color tone.

Claims (1)

[Claims] (1) Weaving a cationic dye-dyeable polyester synthetic fiber thread copolymerized with sulfoisophthalic acid or its metal salt in a range of 0.8 mol% to 2.5 mol% and a polyamide synthetic fiber thread. Alternatively, a method for producing a woven or knitted fabric in a different color tone, characterized in that the woven or knitted fabric is produced by inter-knitting, and the woven or knitted fabric is dyed with a cationic dye and an acidic dye at a temperature of 110° C. or lower.