Discharge printing process improvement _4586 -

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Discharge printing process improvement

Wash dry wash a one of a rolling printing oxidant (in the wrong before the first dye printing paste for the full grind, then add the relevant aids, pre-reduction, after reduction to the basic paste pre-made printing paste) a steamer (6 ~ 8min) a dip in cold water ran over a sodium borate leaching of a soap wash a dry one. 2. High technological requirements, the high cost of dye, water, electricity, steam consumption of high-3. Fabric defects difficult to find a lower rate of first-class products. Discharge in the production of cloth in red on the floor has not gone to the flower type,[link widoczny dla zalogowanych], using the traditional process is not suited to discharge the current production. To simplify the process, reduce costs, and so has not gone red in Montreal fine patterns on the rich and gaudy colors, we will save dyeing to prevent printing process. 1. Mechanism of Anti-insoluble coating insoluble azo dye diazo chromophore coupling loss can be a reducing agent destruction capability, a colorless or no affinity for the water-soluble fiber material be removed by washing, and paint their fixation on the fiber in order to achieve the purpose of anti-Indian. Reduction of the existing paint color paste Jing, cover printed in color on the paint color base diazotization destruction, loss of coupling capacity can not hair color. 2. \Paint additives used in coloring printing 1. Screening test used by the reducing agent stannous chloride reducing agent. It is also good anti-stain (see Table 1), acidic. Reducing agent used in the coating paste of stannous chloride on the stability of coating paste itself has little effect. Wrapped in an amount of chloride pot test \ delete n) 30405060 anti-India effect, \ too red G6g, 1 bad good bad best test we can see from Table 1, reducing agent 30 ~ 40g / t anti-India and poor results, 50g / an anti-India effect can,[link widoczny dla zalogowanych], 6Og / l anti-India and the best, but with excessive loss of cotton fibers are brittle phenomenon, so the amount of pot chloride 45 ~ 5og / 1 is more suitable. 2. Adhesives coatings printing adhesive mechanically by the paint. Stick a stamp on the light in the fiber method. Selection will be by adhesive coating of the fastness and brightness play a decisive role. Adding a reducing agent in the paint, so the choice of adhesive must be resistant to reduction (see Table 2). 2 stick wrapped with Si-contrast test, mm (in former times) mg washed Pán Si column ● ■ Summer Day together, \ win-like ear-color cartridge color l white bar measures thousands of foot and color printing quote co Jing Jiang A 3 ~ 4l422 ~ 3l ~ 2750 adhesion Jing 3 ~ 4l42 ~ 32 ~ 32 homes southerly posts Hui | 4} 42 ~ 332 from Table 2, the screen printing adhesive is not very good fastness, good fastness Dongfeng adhesive, but adhesive is not only expensive I750 fastness, and the price is not high, so it adhesive 750. 3. Crosslinking agent (Table 3) cross-linked Si-wrapped 3 Comparative Test Variable Xuan Ai abandoned IFHEH2D resin adsorption staining with a slight adsorption of the base cars are not known from Table 3, with the crosslinking agent wilt FH dark shade than the EH, while the use of 2D Resin Guangyan bright color, but fastness as B / / March 1993 EH, so the use of EH adhesive is more appropriate. 4. Printing primer: AS1 naphthol Naphthol AS-D0.5% soft water xg direct printing with other additives. Coating paste: reducing resistance coating Yg other additives with the experimental results. Insoluble azo dyes prescription with direct printing. Note; (1) stannous chloride is a strong electrolyte coating slurry should be done long before synthetic rubber for protective colloid paste, then add adhesive, otherwise easy to make emulsion emulsion breaking. (2) that the colors do not use quick blender (3) after the steam treatment is generally not swallow, a large number of medieval printing paste of acid, heat treatment, not easy to create steam to grasp the fabric strength decreased, while the contrary effect of anti-Indian bad. (4) spendthrift when the paint colorant in the former arrangement, diazotization and color-based paste in the post. With a roller printing, the coating paste a reducing agent Cuba, must prevent the paint color paste on the diazotization of the mass base paste color, to add a knife, if necessary,[link widoczny dla zalogowanych], after a lapse of the light board spendthrift. 5. India and the economic benefits of mass production by the test is not only effective, but process is simple, low cost and save a lot of water, electricity,[link widoczny dla zalogowanych], gas. First-class product rate from 69 to 95 above. By comparing it to the main dyes, such as the discharge process by Scholastic Green FFB35O ~ 360 元 / kg, yellow G225 yuan / kg,[link widoczny dla zalogowanych], the improved use of the dye (paint) an average of just 3O yuan / kg or so. After mass production for the plant cost 20.6 million yuan. Fastness also meet eligibility requirements.

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