JPH0274685A - Processing of deep coloring of fiber product - Google Patents

Abstract

PURPOSE:To obtain fiber products having washing resistance, showing deep color effects by providing colored fiber product with methylhydrogen polysiloxane resin, treating with low-temperature plasma and then topping with a resin having washing durability. CONSTITUTION:Colored fiber product comprising natural, regenerated or synthetic fibers is provided with a processing agent consisting essentially of methylhydrogen polysiloxane resin and treated with low-temperature plasma and topped with a resin (e.g., silicone elastomer resin or polyurethane resin) for resin processing having washing durability to give fiber products having excellent deep color effects and commercial value.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for deep-coloring colored textile products used for general clothing and the like.

Conventional technology Synthetic fibers in general, especially synthetic fibers manufactured by melt spinning, have the disadvantage that their surfaces are smooth, the fiber surface reflects a lot of light, and the depth of color is poor, especially in dark colors such as black and navy blue. there were. On the other hand, natural W4 fibers generally have a lower refractive index than synthetic fibers, and the shape of the fiber surface is complex, so the reflection of light on the fiber surface is less than synthetic fibers, and the appearance is darker than synthetic fibers, but when it comes to textiles with smooth surfaces, etc. In some cases, the surface had a strong gloss, appeared whitish, and lacked depth of color.

Various attempts have been made to improve the depth of color in the past. For example, Japanese Patent Application Laid-Open No. 163471/1983 describes a method of deepening the color of synthetic fibers by forming micro-craters on the surface of the fibers. In addition, JP-A-60-162865 describes a method in which a silicon resin, which is a resin with a low refractive index, is applied to the fiber surface and then treated in a low-temperature plasma atmosphere of a gas containing oxygen. There is.

Problems to be Solved by the Invention However, the former method of forming microcraters on the fiber surface has no great effect on natural fibers, and even when applied to synthetic fibers, it takes a long time to process and reduces productivity. There were problems that made it difficult to put it into practical use. In addition, the latter method, in which silicone resin is applied and then treated in a low-temperature plasma atmosphere, has a large deep coloring effect on synthetic fibers such as polyester, but the deep coloring effect decreases when dry cleaning or home washing occurs. That is, there was a problem in the durability of the deep coloring effect.

The present invention solves the above-mentioned problems, and aims to provide a method for deep-coloring a colored textile product, which can produce a deep-coloring effect with excellent durability in a short period of time. It is something to do.

Means for Solving the Problems In order to solve the above-mentioned problems, the method for deep-coloring textile products of the present invention involves applying a processing agent mainly composed of methylhydrodiene polysiloxane resin to colored textile products, It is characterized by plasma treatment and then topping processing with a fiber processing resin that has washing durability.

In the present invention, colored textile products include natural fibers dyed with dyes, recycled fibers, synthetic fibers, yarns such as so-called spun-dyed fibers that have been mixed with pigments during manufacturing, and blends, weaves, and crosses of these in woven and knitted fabrics. Refers to knitted fabric.

In the present invention, first, a processing agent mainly composed of methylhydrogen polysiloxane resin is applied to the colored textile product. As the methyl hydrodiene polysiloxane resin, emulsion type resins that are generally commercially available as water repellent agents for textile processing or silicone softeners can be used. In addition, an H-silicon resin as a crosslinking agent, a polyurethane resin commercially available and used as a Q coloring resin for polyester fibers, and an antistatic agent may also be used together. The method for applying this processing agent to textile products is the pad-dry method.

There are spray methods, exhaustion methods, etc., but when the textile product is fabric, the pad-dry method is common. Methylhydrodiene polysiloxane resin has a content of 0.1 to 0.1 to fiber heavy metal.
025% will be given. The appropriate amount of the resin used in combination is 1/2 to 1/10 of the methylhydrorenine polysiloquiline resin.

The textile product coated with the above-mentioned processing agent and dried is then subjected to low-temperature plasma treatment. Low-temperature plasma treatment can be carried out using known equipment, such as "Journal of Textile Machinery Society" Vol. 38, Arashi 4 (19
The one described on page 188 of 1985) can be used. This device has a structure and performance that allows discharge electrodes to be installed inside a vacuum container that can maintain low pressure, allows specific gases to be introduced at a predetermined flow rate, and allows the inside of the container to be evacuated using an attached vacuum pump to maintain a constant pressure. This is a device that has When a voltage is applied to the electrodes in this device, a glow discharge occurs and a low-temperature plasma is formed. Most commonly, RF power of 13.56 MHz is applied. Low-temperature plasma treatment can be performed by passing the textile product to be treated through low-temperature plasma formed between electrodes at a desired speed.

The gas used for heating may be either a non-polymerizable gas such as oxygen, nitrogen, air, argon, or helium, or a mixture thereof, or a polymerizable gas such as methane. First, the textile product coated with the above-mentioned processing agent and dried is housed in a vacuum container, and the internal pressure is adjusted to 0.01 to I Torr by evacuation and depressurization using a vacuum pump. Next, the gas such as oxygen gas is introduced into the container. After introducing the air and replacing the remaining air, the pressure inside the container is reduced to 0.1 to 5 Torr.
, preferably adjusted to 05-2'l'orr. After that, high frequency power is applied to the electrode to cause glow discharge, and the introduced gas becomes a low-temperature plasma state. The appropriate high frequency power at this time is 0.1 to 0, 5w1011'' (1! pole area).

A low-temperature plasma treatment is performed by passing the previously housed product [10] through this low-temperature plasma atmosphere. The processing time is usually from several seconds to 300 seconds, preferably from 30 to 18 seconds.
It is 0 seconds. Textile products colored by this low-temperature plasma treatment have significantly improved color density and depth of color. However, in this state, the durability of the deep coloring effect is not good as described above. In other words, the deep coloring effect is lost during dry cleaning or home washing. For this reason, in the present invention, topping processing is further performed with a resin that is durable against washing.

In other words, the optically improved fiber surface is coated with a stable resin film that does not change even after dry cleaning or home washing (
topping).

The resin used for this topping processing first needs to be durable against dry cleaning and home washing, but it also needs to be as transparent as possible, have a low refractive index, and be flexible. required.

There are silicone elastomer resins and polyurethane resins that satisfy such required performance, both of which are commercially available as emulsion silane types or aqueous solution types for fiber processing, and can be processed using a pad-dry-cure method. These resins are generally three-dimensionally crosslinked through curing treatment and have excellent properties such as dry cleaning resistance and home washing resistance.

Effect In the above structure, by applying a processing agent mainly composed of methylhydrodiene polysiloxane resin to the colored textile product and subjecting it to low-temperature plasma treatment, the color density of the colored textile product is greatly improved and the color is improved. By topping this with a fiber processing resin that has washing durability, the washing resistance of the above-mentioned deep coloring effect is improved.

Example Examples of the present invention will be described below.

The evaluation of deep coloring of the sample in this example was based on color roughness. It shows that the effect is excellent.

In addition, the washing durability was evaluated from the change in the L water level after dry cleaning the fabric three times.

Polyester strong twist fabric dyed black (warp...1
50D/72f, number of twists 1500 (i11 inch, density 75
Book/inch, weft...150D/72f, number of twists 1500
times/inch, density 75 pieces/inch, texture...Georgette) was padded with 25 g of Poron MR (manufactured by Shin-Etsu Chemical Co., Ltd.) as methylhydrogen polysiloxane resin, and the squeezing rate was It was squeezed at 100% and dried at 120°C for 2 minutes. Next, plasma treatment was performed under the following conditions.

Processing gas: Oxygen gas flow rate: 200mM/min Vacuum level: 0.7 Torr High frequency frequency: 13.56MHz high frequency output
: 0.25 W/an' (Ml polar area) Treatment time: 260 seconds The woven fabric subjected to low temperature plasma treatment was subjected to 1-knobbing processing under the following conditions.

Silicone elastomer resin DP-3 (manufactured by Allied Colloid) 50 g/l Catalyst DP-Y (manufactured by Allied Colloid) 5 g/l Penetrant Alcopol 650 (manufactured by Allied Colloid) 2 g/l The above composition Pad in the treatment solution and dry (120°C).

2 minutes) and cured (160°C, 30 seconds).

Some of the woven fabrics subjected to the above processing were dry-cleaned three times using a perchloromethane system.

Samples were taken at each step of the above series of processing, that is, after dyeing, after low-temperature plasma treatment, after topping, and after dry cleaning, and the L value was measured. The results are listed in Table 1.

Comparative Example As a comparative example, a polyester strong twist yarn fabric similar to that used in the above example was treated in exactly the same manner as in the above example except that topping processing was not performed. The L* value was measured for the sample obtained in each step by processing with a processing agent, low-temperature plasma treatment, and dry cleaning in the same manner as in the example, and the results are listed in Table 1.

Table 1 As is clear from the results shown in Table 1, in this example, the L water level was superior to that of the comparative example, which is a conventional method, and the L water level remained unchanged even after dry cleaning was performed three times. The change was slight, and the black density remained unchanged. On the other hand, in the comparative example, the L* deep coloring effect was significantly reduced by dry cleaning.

Effects of the Invention As described above, in the method for deepening the color of textile products of the present invention,
Colored textile products are coated with a processing agent mainly composed of methylhydrogensiloxane resin and subjected to low-temperature plasma treatment, and then topped with a textile processing resin that is resistant to washing, making it possible to dry clean and clean in a short time. It is possible to express a deep coloring effect with excellent durability against home washing, and it is possible to greatly improve the commercial value of dark-colored textile products.

The value changes greatly.

Claims (1)

[Claims] 1. A textile product characterized by applying a processing agent mainly composed of methylhydrodiene polysiloxane resin to a colored textile product, subjecting it to low-temperature plasma treatment, and then topping it with a textile processing resin that has washing durability. Deep color processing method.