The choice of gravure ink stick stir - gravure printing, ink stick stir - Printing Industry
In the gravure Print Production, because of the volatile solvent ink tank, ink uniformity lower surfaces to form a skin and ink ink blocks, cylinder wear, the blade difficult to shave, to produce printed materials paste version, knife lines and other defects. To address this problem, as long as ink "flow" together, constantly mixed, naturally, to avoid this situation.
Mobilized to ink means there are two, one using the ink circulating pump, so that ink circulation up; second place in the ink tank mixing ink stick, ink in the ink tank to produce flow. The former is the outer loop ink, high cost, and increased failure factors, generally with added solvent, viscosity control system compatible, the list is not in this paper. Let ink evenly from the point of view, which is the most economic and effective measures.
Mixing ink stick is usually made of aluminum alloy rod material, the surface of a spiral of continuous processes, the so-called "ripple" or start line, both ends of a magnetic material, can be adsorbed on the version of roller. Printing ink mixing ink stick floating in the surface version of roller rotates in the opposite direction by the adsorption of rotation. Rotation, the corrugated surface drive ink, ink movement up to the surface, which beat even the ink, printing materials to avoid the appropriate quality.
Decided to mix ink stick mass mainly in the following two points: 1. Effect. Gravure printing ink process why the crust is mainly because the printing plate cylinder is round, running a center. Printing process is one-way operation. Bubbles produced during operation on the floating plate cylinder front surface of the formation of the so-called ink ink crust. As the plate cylinder and it is caused by the intense operation of bubble surface junction, leading to ink high in volatile organic solvents.
Mixing ink stick and ink tube only version of the crust of the interval owner, its real role is to function properly, that play a role in mixing ink and isolation, but also reduce the organic solvents play. And stirred with a magnetic ink stick on the ink material to suck the metal residue. They play a filter role.
2. Life. Mixing ink stick floating in the ink surface because of the need, generally hollow, and if sealing leaks, solvent ink stick into the mix inside, will sink, loss of stirring, so both ends of the seal shall be corrosion resistant. In addition, the surface wear resistance is better. The market is the most durable all-aluminum ink stick. That is, two-side seal is aluminum or other metal products.
Currently, commercial mix ink stick generally the following: 1. Plastic Mixing ink stick, commonly found in imported products, the surface is made by the abrasion of plastic sheets, internal use of paper core, the quality is quite good, the price is relatively high, generally about a thousand dollars per meter. Some people have said that domestic counterfeit it, but because there is no better abrasion of plastic materials, life is rather poor, In addition, the effect of mixing ink is not very good. In fact, this paper effect of the ink stick is the best. Because the paper do not easily deformed round bar, because he has got to toughness. Metal deformation is not so easy.
2. Inker stir around the rope. GM tube for general use made of the surface winding a cord do begin line, these products have two defects: as with cord wrapping, start line angle is relatively small; cord will dip ink, ink color change is not easy cleaning . Winding rope disadvantage is not easy to clean. But the advantage is about 3,4 can not be compared, that is, it does not hurt plate cylinder, operating friction by plastic rope and plate cylinder friction.
3. Singlet mixing ink stick corrugated aluminum. Stir around the rope structure with ink stick, but the cord into aluminum spiral processes, because only a start line, the angle is small, relatively poor mixing ink effect. This should be better than 4 more than the following. Because the ink stick and a small plate cylinder friction surface. Small section protruding pattern. This product has application in 2003, the national product patents respectively
4. Eight lines aluminum corrugated mix ink stick. Aluminum extrusion profile rotation, the surface 8 to start line, angle, is the best product mix ink. In addition, these products are more corrosion-resistant sealed at both ends, and wear resistance is better, if the timely liquidation of iron absorption mixing ink sticks and other debris, life expectancy is generally 2 to 3 years, did much to save the factory uniform ink cost.
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