The method of printing cellulose-containing textile material

 

(57) Abstract:

Use: dyeing and finishing textile industry for printing fabrics made of cellulose fibers to increase the degree of fixation of the dye on the fabric. Essence: at the stage of drying, the fabric is passed between the rotating surfaces under constant voltage. Rotating surface are under constant voltage of 3 to 15 C. 1 C. p. F.-ly, 1 Il.

The invention relates to dyeing and finishing production of the textile industry, and in particular to methods of printing fabrics made of cellulose fibers.

Known methods of printing fabrics of cellulose fibers, which consists in applying printing ink to the fabric, followed by drying and fixation of superheated steam or hot air [1]

Known methods of printing fabrics have the disadvantages associated with low degree of fixation of the dye, resulting in increased consumption of dyes and other chemicals, increased pollution of waste water. In addition, the stages of drying and fixing flow with low velocity.

The closest technical solution to predlojeno the ke, treatment with saturated steam at 102-105aboutC for 5-10 min for active dyes and 8-10 minutes for distillation, washing regulated mode [2]

The disadvantages of this method are the low degree of fixation of the dye on the fabric and low, though conforming to the standards of GOST, resistance to washing and friction. One reason for these shortcomings is incomplete penetration of the dye from the surface into the fiber during the commit.

The invention is directed to increasing the degree of fixation of the dye.

The technical result from the use of the invention is to achieve deep penetration of the dye into the fiber, contributing to the increase in the number of fixed dye in deep micropores. This eliminates phase commit as technological operations.

The invention consists in that in the method of printing cellulose-containing textile material by applying to it printing inks, drying and washing, at the stage of drying, the material is passed between the rotating surfaces under constant voltage. Pressure rotating surface are under pastime surfaces, under constant voltage, applying a printed pattern purposefully accelerates the diffusion of the dye into the fiber without additional heat and, therefore, without additional considerable amount of energy.

DC provides the transfer of the dye into the fiber, making it necessary to move the particles of dye and ions of the electrolyte of the same charge (the electrolyte is always present in the printing ink) in one-way deep into the fibers, which corresponds to the increase in the number of fixed dye in deep micropores, i.e., increasing the degree of fixation of the dye. This leads to an increase color fastness to rubbing, wet treatments, etc.

Processing an electric current can be performed using the device shown in the drawing.

The fabric 1 is coated on its surface printed paint flow between rotating clamping surfaces 2, which with the help of graphite brushes, direct voltage. Pressure rotating surface is installed in the drying chamber 3. When passing the parcel fabric with a printed pattern closes the electrical circuit. The direction of the electric current must be tnote depends on the electrical properties of the dye (cationic, anionic).

Handling a constant electric current is conducted in the drying process at the stage when the humidity of the fabric, depending on the type of the printing picture is 2-20%

P R I m e R 1. Cotton cloth (calico art. 142) applied printing ink of the following composition, g/kg: VAT dye pink P 130, glycerin 80, soda ash with water (1:1) 300, rongalit with zagustai (1:1) 240, sagasti starch 250. Printed fabric with moisture content of 10% in the drying process is passed within 0.8 seconds between the rotating clamping surfaces, which are down DC voltage 3 C. After drying, the fabric is washed and dried on a regulated regime for this class of dyes. The result is equal to the color pink, corresponding on strength performance standards of GOST. The degree of fixation 83% Degree of fixation of the dye on the fabric printed with the same printing ink composition according to the classical method is 70% color fastness to washing, evaluated according to GOST 9733.4-83 is for samples printed in this way, 5/4/5; classic 5/4/4; resistance to perspiration and dry friction, respectively 4-5, 5-4 and 4, 4-5.

P R I m m e R 2. Cotton fabric Nirvana with water (1:1) 300, rongalit with zagustai (1:1) 240, sagasti starch 250. Printed fabric with moisture content of 8% during the drying process within 0.3 to pass between the rotating clamping surfaces, which are down DC voltage 5 C. Then the fabric is washed and dried on a regulated regime for this class of dyes. The result is a smooth color pink, corresponding on strength performance standards of GOST. The degree of fixation of the dye on the fabrics printed by this method, 87% Degree of fixation of the dye on the fabric printed in the classical way, is 70% with the same composition of the printing ink. Color fastness to washing, evaluated according to GOST 9733.4-83 is 5/4/5; in the classical way 5/3/4.

P R I m e R 3. Cotton fabric is applied printing ink composition, g/kg: dye VAT green ha 130, glycerin 80, soda ash with water (1:1) 300, rongalit with zagustai (1:1) 240, sagasti starch 250. Printed fabric with 20% humidity during drying for 0.5 to pass between the rotating clamping surfaces, which are down DC voltage 6 C. Next, the fabric is washed and dried on a regulated regimein fixation of the dye on the fabric 94% Degree of fixation of the dye on the fabric, printed in the classical way, is 75%

P R I m e R 4. On khlopkopryadilnaya fabric art. 82192 applied printing ink composition, g/kg: sinten blue RL 20, procion blue 3P 30, urea 200, sodium bicarbonate 15, alginate sagasti 6% 590. Printed fabric with 15% moisture during drying within 0.3 to pass between the rotating clamping surfaces, which are down DC voltage 5 C. Then the fabric is washed and dried under a regulated regime. The degree of fixation of dyes on fabrics amounted to disperse 85% 89% classic mode dispersion 78% active 80%

The use of a constant electric current allows one to increase the degree of fixation of the dye on the fabric at 7-14% and eliminate fixation as a technological stage.

1. The METHOD of PRINTING cellulose-containing TEXTILE MATERIAL by applying to it printing inks, drying and washing, characterized in that at the stage of drying, the material is passed between the rotating surfaces under constant voltage.

2. The method according to p. 1, characterized in that the material is passed between the rotating surfaces under constant is

 

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