Method for washing of cotton fabrics after mercerization process

FIELD: textile industry, in particular, cotton fabric washing after mercerization process in production of dyed textile materials.

SUBSTANCE: method involves dividing bath adapted for washing of cotton fabrics and supplied with running water into two chambers by means of partition featuring the properties of fine filter for water; introducing electrodes into both of said chambers; supplying voltage to electrodes for creating electric field having intensity E=20-200 V/m; changing voltage polarity on electrodes with periodicity of 1-5 min; washing cotton fabric within chamber of larger size during 5-20 min. Method allows electric field intensity and, correspondingly, voltage supplied to electrodes to be reduced and safety of washing process to be enhanced.

EFFECT: increased efficiency, reduced process time, decreased consumption of power and costs for washing of cotton fabrics after mercerization process, and improved safety of process.

1 dwg

 

The invention relates to textile manufacturing, and in particular to methods of washing cotton fabric after mercerization in the production of dyeing textile materials.

Usually cotton fabric after mercerization is washed with hot and cold running tap water for 0.5-1 hour (washing time depends on the density, the thickness of the fibers and the fabric itself, and other physico-chemical properties of fibres and fabrics) [see Davidson M.I. electromagnetic treatment of water systems in the textile industry. - M.: Legprombytizdat, 1988. - s].

A disadvantage of the known methods of washing cotton fabric after mercerization is the high energy intensity of one of the processes of textile production: wash consumes 15-20% of heat and up to 40% of the electrical energy consumed finishing production.

The closest technical solution to the same destination to the claimed method according to the essential features and therefore chosen for the prototype is a method for washing cotton fabrics, including the processing of flowing water electric eld of strength 6500-7000/m and subsequent washing of the fabric by passing tap water through it (at first the water is treated by an electric field, then this activated water washed TC is ery) [see Davidson M.I. electromagnetic treatment of water systems in the textile industry. M: Legprombytizdat, 1988. - s-126]. This method is 10-15% intensifies the process of washing cotton fabric after mercerization and reduces washing time by 25 to 50 minutes

The disadvantages of the prototype method are not sufficiently high efficiency washing cotton fabrics, high energy consumption, high cost of this process of textile production, the long duration of the washing process, a large value of electric field intensity in water treatment and as a consequence of this heightened danger for the operating personnel in the implementation of the prototype method.

The technical result of the invention to increase efficiency, reduce time, reduce energy consumption, reduce the cost of washing cotton fabric after mercerization, a decrease in the electric field intensity in water treatment and, accordingly, applied to the electrodes of an electrical voltage and therefore increase the degree of safety of application of the method of washing fabric after mercerization.

This technical result in the implementation of the invention is achieved in that tub with running water for washing cotton fabrics razgovarivaut two to the measures by a partition, have properties filter, water purification, both cameras are immersed electrodes, the electrodes serves voltage creating an electric field of strength E=20-200 In/m, the change in the polarity of the voltage on the electrodes with a period of 1-5 min, washed cotton fabric in the chamber, larger, within 5-20 minutes

The invention is illustrated in the drawing.

Bath 1 with running water for washing cotton fabrics partitioned by a partition 2, with the properties of the fine filter water, the electrodes 3 are contained in both chambers 4 and 5, the electrodes serves voltage creating an electric field of strength E=20-200 In/m, the change in the polarity of the voltage on the electrodes of the switch 6 with a period of 1-5 min in the chamber 4, larger, washed cotton fabric in for 5-20 minutes

Specified in the formula limits the values of the processing parameters selected for the following reasons. The lower limit value of the generated electric field intensity E=20 V/m is applied when washing for 20 min with a period of the polarity of the voltage on the electrodes 5 min, the upper limit E=200 V/m is applied when washing for 5 min with a period of the polarity of the electrodes 1 min

Example. The tub 1 is a plastic with flowing water for a length of 1 m razgovarivaut vertical wall 2 of the plate is ATA thickness 0.005 m having through holes with a diameter of 0.0005 m with a step of 0.005 m into two chambers in the ratio of their volumes is 1:10, along the opposite vertical wall parallel to the wall of the compound set graphite electrodes 3 in both chambers 4 and 5, the distance between the electrodes is equal to 1 m, in the chamber of larger volume 4 download cotton fabric from severe fiber to the electrodes serves a direct current voltage of 75 V, which corresponds to the magnitude of the electric field strength E=75/m, change the switch 6, the polarity of the voltage on the electrodes with a period of 2 min, washed cotton fabric in these processing options within 10 minutes

The time of leaching on the prototype method is the same cotton fabric after mercerization three times more, respectively, three times more energy and overall cost wash cloth.

Thus, in this example, the proposed method is three times more efficient than the prototype method. The electric field strength decreases with 7000/m the method prototype to 75 V/m, in the application example of the present technical solution, i.e. in 93%, which is a factor of improvement of conditions of safety and energy saving.

The use of the proposed method can significantly increase the overall efficiency is wash the cotton fabric after mercerization, dramatically reduce the time, energy, and the overall cost of this one of the most costly processes of textile production.

Method wash the cotton fabric after mercerization, including water treatment electric field by submitting a difference of electric potentials on the two electrodes, immersed in water, passing water through a cotton cloth in the tub, wherein the tub with running water razgovarivaut into two chambers by a partition having properties filter, water purification, both cameras are immersed electrodes, the electrodes serves voltage creating an electric field of strength E=20-200 In/m, the change in the polarity of the voltage on the electrodes with a period of 1-5 min, washed cotton fabric in the chamber, larger, data processing modes within 5-20 minutes



 

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31 cl, 1 tbl, 1 ex

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