Low to medium rolling base sound reactive "phase two" printing - dye, printing - silk screen printing industry, especially

Low to medium rolling base sound reactive "phase two" printing - dye

, printing - silk screen printing industry, especially

Now widely used reactive dyeing Printing Steam fixing process. "One phase" Printing Paste printing process by adding a certain amount of domestic demand, alkali, urea and other additives, printing immediately after the steam drying fixation. Adopting the "one phase" printing process has a variety of patterns for flower type, pattern outline clear, color and so easy to take advantage of.

Be added as printing paste of alkali, not only would the resulting hydrolyzed reactive dyes, and the viscosity of sodium alginate slurry also declined sharply, leading to instability in printing quality, it should be used against established low reactive dyes, and to strengthen the order of steaming, fixation, and soaping. Also, because printing paste in the addition of alkaline agents, textile printing needs immediately after the fixation with post-treatment process, otherwise the process will hold the wind in India, etc. Defects generated.

As "one phase" Printing of those drawbacks, reactive "phase two" printing process is now being renewed understanding of it.

"Phase two" reactive dyes

A "two phase" printing process, printing paste is not necessary to join the alkali agent, and the use of printing and then rolling alkali treatment. As the alkali agent is not printing color paste, printing immediately after fixation and without post-processing, shelving process in India would not be so streaky wind generated. Colorants can also be configured to place a more stable period of time they would not dye hydrolysis. Reactive "phase two" printing process, short fixation with steam, the steam savings, soaping Lase less, finished bright color, high color yield, and good reproducibility.

"Phase two" printing process despite these advantages, however, Joseph is still not widely used, the most important reason is that padding alkali plant by the technical constraints. For general rolling cart rolling fluid rate of 70 ~ 80% is considered quite low, and if the use of such rolling cart to complete the "two phase" printing process of the leaching of alkali fixation, not only requires a lot of additives, and After the need to re-roll impregnated fabric. As the fabric is not fixing the dye in the impregnating alkali when peeling off in large numbers in the dip solution collapse, resulting in colors and patterns take the vague outline of the production printing flaw we can see, we should adopt the "two phase" printing process , rolling, rolling alkaline liquid vehicle must have particularly low rolling conditions, so as to ensure that when the rolling base fabric dye is not dissolved off.

With low to medium rolling cart to solve the "two-phase Law" printed in the rolling alkali production problems

Germany GOLLER company we use low to medium rolling cart to carry out reactive "phase two" of the rolled printing production of alkali treatment, and achieved satisfactory results.

Figure 1 Schematic diagram of low to medium rolling car

Figure 1 GOLLER company's low-to medium rolling car diagram. Because it uses a special mechanical device - a small amount of fluid machine (MINI-FLUID), so with liquid rate to 30%. Small liquid volume machine mechanical principle structure shown in Figure 2.

Figure 2, the work of a small amount of fluid machine diagram

1 - cover stains roll; 2 - to the liquid Scraper ; 3 - magnets; 4 - granted contingent worse; 5 - for possession devices; 6 - stacking roller; 7 - fabric layer; 8 - measured to the liquid layer; 9 - do not measure to the liquid layer; 10 - expander roll

Can be seen from Figure 2, the fabric into the fabric through a high office, into the low to medium unit "small amount of fluid machines." In order to ensure smoothness of the fabric, be equipped with stainless actinides and a cloth roller expander roll. Put unit includes a stainless steel oar, the storage medium is very limited, there is a layer of impregnated rubber coated roller.

Roll forward in the dipping direction of rotation of the surface above, there is a circle with a liquid core Scraper , Using a bar magnet, so that the surface of roller blade impregnated pressing.

Behind the scraper, the liquid is evenly divided into a thin layer of very thin film, distribution of impregnated roller in the surface liquid thickness is based on the surface of the groove surface scraper decision. Superimposed using a pressure control roller, the liquid pressure to the fabric into.

Change the distance between the blade and the magnetic bar can be adjusted to the liquid scraper round extrusion pressure. Under normal circumstances, to keep the space distance 2 ~ 6mm. Adjust with the level of liquid when the device can adjust the worm, or replaced with different surface of the blade.

GOLLER company as a low to medium rolling, rolling vehicle with less than 3O% performance liquid padding rate, access to printed fabrics will not lye dissolved fabric dyes, and it could be better applied to reactive "two phase" printing process. Compared with normal rolling cart, you can save 50% dipping solution, and the use of hair color cape even more thin, it will not result in infiltration of. As the fabric with less liquid and therefore the burden of post-processing printing smaller, easy washing.

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