JPH05230779A - Uniform dying of wool fabric - Google Patents

Abstract

PURPOSE:To enable to uniformly print wool fabric without damaging its strength and feeling by a low temperature plasma treatment of the wool fabric after scouring. CONSTITUTION:Wool fabric is scoured, dried and afterwards treated with a low temperature plasma of non-polymerizable gas (e.g. oxygen, argon, etc.) to make an epicuticle layer hydrophilic, hence being able to be uniformly dyed. Further, physical properties and a feeling of wool are not damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for uniformly printing a wool fiber cloth.

[0002]

2. Description of the Related Art In general, wool fibers have a large water contact angle, but have a large contact angle with water and poor instantaneous wettability and penetrability during printing, so that scouring before printing is uniform. It is necessary to perform it sufficiently, and various methods have been used for the purpose of improving the permeability and sharpness of the printing paste. The most common method is chlorination, which is usually called chlorination. This is a method to improve the penetrability and sharpness of the printing paste by oxidizing the epicuticle layer that forms the outermost layer of wool fiber. The chlorine treatment method controls the uniformity of chlorine treatment itself. If the chlorine treatment becomes non-uniform, color unevenness will occur, which makes control of the process very difficult. Also,
Fibers are damaged or yellowed due to excessive treatment, and since steaming heat treatment after printing is performed for a long time, there is a drawback that the yellowing and damage of the wool fibers are large and the color purity and density are lowered.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of such a situation as described above, and solves the problems of the prior art as described above and causes no substantial quality change.
The purpose is to obtain a uniform printed material.

[0004]

SUMMARY OF THE INVENTION The present invention achieves the above object and has the following configuration.

That is, the present invention is characterized by a method for uniformly printing a wool fiber cloth, which comprises scouring and drying the wool fiber cloth, treating it with a low-temperature plasma of a non-polymerizing gas, and then printing it. is there.

The present invention will be described in detail below.

The wool fiber cloth referred to in the present invention means a woven fabric, a knitted fabric or the like containing wool or other animal hair, and includes a woven fabric, a knitted fabric or the like used in the form of a sewn product.

The wool fiber cloth is first subjected to ordinary scouring and drying, and then subjected to low temperature plasma treatment of non-polymerizable gas.
If the impurities adhering to the wool fiber cloth are removed by refining, the effect of the low temperature plasma treatment performed in the next step is significantly improved. Scouring can be performed by a conventionally known method.

Next, the wool fiber cloth which has been scoured and dried as described above is treated with a low temperature plasma of a non-polymerizable gas. A low-temperature plasma of a non-polymerizable gas is a gas that does not have a polymerizing property in the plasma state, such as oxygen, hydrogen,
This refers to low temperature plasma of a single gas such as argon, helium, nitrogen or a mixed gas of these gases, which is obtained by making these gases into an ionized state or an excited state by electric energy under reduced pressure. Low temperature plasma treatment of non-polymerizable gas
First, the wool fiber fabric to be treated is housed in the treatment tank, and then the treatment tank is evacuated by a vacuum pump to reduce the pressure to 1 Torr or less, and a non-polymerizable gas such as oxygen, argon, or helium is mixed alone or mixed. Gas is introduced and the pressure is adjusted to 0.1 to 2.0 Torr.
Adjust to. When a voltage is applied between the electrodes installed in the treatment tank to cause glow discharge, a low-temperature plasma state is established, so that the treatment is performed for a predetermined time. The voltage applied at this time may be direct current or alternating current, but normally 1 kHz to 100 MHz is used, and generally 13.56 MHz is used. The applied power is usually 0.1 to 1 W / cm ² (electrode plate unit area), and the treatment time is usually several seconds to 200 seconds, preferably 20 seconds to
90 seconds.

In the method of the present invention, the wool fiber cloth thus treated with the low temperature plasma of the non-polymerizable gas is subjected to the printing treatment. Printing may be appropriately performed by any printing method and conditions as necessary.

The present invention has the above configuration.

[0012]

[Working] Since the epicuticle layer forming the outermost layer of wool fibers is hydrophobic, it has a great effect on the permeability of the printing paste even after sufficient scouring. When such a wool fiber cloth is treated with low temperature plasma, first, the epicuticle layer on the fiber surface is uniformly hydrophilized,
The printing paste comes to adhere evenly, and thus the printing is done evenly.

[0013]

【Example】

Example 1 A 100% wool woven fabric was scoured and dried by a conventional method. This woven fabric was subjected to low temperature plasma treatment of oxygen gas under the following low temperature plasma treatment condition 1. Low-temperature plasma treatment conditions 1 Gas: Oxygen trueness: 1 Torr High frequency output: 0.7 W / cm ² (electrode plate unit area) Treatment time: 30 seconds

A vertical striped pattern was printed on the thus obtained woolen fabric in red by using a printing paste of Formula 1 below, using a flat screen printing machine. Prescription 1 Cibacron Red B 30 g / kg (Ciba Geigy, reactive dye) Snow Algin M (5%) 500 g / kg (Fuji Chemical, sodium alginate) Urine 150 g / kg MS Liquid 10 g / kg (Meisei Chemical) , Anti-reduction agent) Sodium bicarbonate 20g / kg

After printing and drying, a steam heat treatment was carried out at 102 ° C. for 10 minutes, followed by washing with water, soaping, washing with water and drying.

For comparison with the method of the present invention, printing was carried out in the same manner as in the present embodiment except that the low temperature plasma treatment was omitted in this embodiment.

In the woven fabrics obtained in the comparative examples, the fiber fluff on the woven fabric surface of the printed portion was whitish and the uneven dyeing was conspicuous, whereas the woven fabric produced by the method of the present invention was printed very uniformly.
The pattern was also very beautiful as compared with the comparative example.

[0018]

EFFECTS OF THE INVENTION According to the present invention, it is possible to perform uniform printing without significantly changing the physical properties and feel of the wool fiber cloth such as strength. Further, since the method of the present invention is a gas-phase treatment, it has an advantage that there is no problem of wastewater treatment.

Claims (1)

[Claims] 1. A method for uniformly printing a wool fiber cloth, which comprises scouring and drying a wool fiber cloth, treating it with a low-temperature plasma of a non-polymerizable gas, and then printing.