Printing fault and ruled out

Self-adhesive materials usually linkage on the label printing and processing, the most common for letterpress printing form, other printing methods also have application.Common faults are attached at the printing stage:
Failure 1 label after printing ink layer surface, drying is slow or ink layer will rub off
Reason: printing ink layer too thick, too much of ink and printing ink additives used by inappropriate, ink degeneration ink types such as inappropriate or use will cause the label after printing ink layer not stem, dry slow or a brush and ink layer;In addition, the machine speed fast, drying equipment drying dry, curing power is too low or the drying time is too short, also can make the ink is not fully dry;And the production workshop temperature is too low, it will affect the ink drying rate, will also lead to the failure.
The solution is:
1, adopt the method of deep thin printing ink to reduce ink layer thickness;
2, use the special ink of quick drying;
3, the use of form a complete set to add liu, and form a complete set of desiccant;
4, take measures to extend the print of drying or curing time;
5, improve the room temperature, a moderate amount of exhaust, speed up the ink dry.
Fault 2 thin film surface printing ink layer adhesion fastness is poor, easy off the ink
If the film surface without the corona treatment, or below the surface tension of the film, the surface tension of the ink printing ink easy adhesion;No use of ink and thin film material properties do not match or use is not a special ink, also can produce this kind of failure;While the use of outdated or failure ink also inevitably appear this kind of failure.In addition, the drying device (UV or infrared hot air drying) power is low, the ink is not fully dry or printing ink layer too thick too large, the ink viscosity, ink quantity after the long time to dry ink embrittlement, will also lead to membrane surface printing ink layer adherent cell difference is poor, easy off the ink.
The solution is:
1, improve the surface tension of substrates, the required surface tension value will reach more than 38 dyne/cm;
2, the rotary label making machine should be installed by corona device, through random corona is industry to improve the surface tension of the film;
3, can use first transparent solvent ink booking base to improve the surface tension of substrates,
4, selection and matching of special ink printability and form a complete set of additives;
5, improve drying or curing power, or reduce the machine speed, increase the drying time;
6, printing ink layer to thin, ink amount to as little as possible, monochrome repeatedly dieyin when necessary;
7, recommended for UV glazing after printing, in order to protect the printing ink layer, layer increase the ink adhesion fastness.
Fault 3 printing ink adhesion fastness on FASCLEAR and PRIMAX is poor
Reason: FASCLEAR and PRIMAX materials are soft matte surfaces, surface strength is poor, delimit gently with his nails appear scratches, regardless of its surface tension is high and low, will appear problem of poor ink adhesion fastness, and even will not appear on other substrates, ink adhesion fastness problems, on FASCLEAR and PRIMAX material also can appear problem of poor ink adhesion fastness.The so-called ink, here is actually the substrate surface is damaged, has nothing to do with the ink at all.

The difference between reactive printing and pigment printing

Printing reactive printing and pigment printing;Pigment printing including water slurry seal and mucilage printing again.Water slurry printing printed product generally feel is slightly worse than reactive printing, finished product and mucilage printing printed feels very stiff, generally used for the local ornament on the clothing, such as brooches, sleeve, etc. This article from the textile resources, each netizen directly in the browser, please direct input textile resource view.
1. The water slurry printing.Is the early application of printing technology.Material is water-based slurry, which is used to print pattern is similar to the pigment or dye with the painting.Through the study of the technology of screen printing process, so as to make a design of slurry can through to the fabric, and no pattern cannot penetrate, this figure can be printed on the fabric.Water slurry printing process is one of the most basic of silk screen printing industry printing process, it can be in cotton, polyester, hemp and so on, almost all of the light color printing on fabrics, can be widely applied.How it works Similar to dyeing, the difference is they have the fabric of an area "dyeing" as needed to take a color.So, this process of stainless steel wire mesh cannot be applied in deep color fabrics.Water slurry printing process the biggest advantage is widely used, spend a fastness is very good, can use relatively low price printed better effect.The limitations of water slurry printing process is cannot be applied on all dark fabrics.
2. Rubber paste printing.Mucilage printing is widely used in clothing, its advantage is that can produce a kind of special texture effect, elastic, feel is good, can in a deep impression on overprinting light color.Mucilage printing technology application of special chemical gel height seamless blend with dye. The dye through the gel medium. Strong adhesion on the fabric. Rubber paste printing process to overcome the limitations of the water slurry printing. Its characteristic is to adapt to all kinds of color depth and material printing,screen printing mesh can be in cotton, linen, viscose, polyester, polyamide, polypropylene and chlorofibre and all kinds of fiber blended fabric printing., can also be used in leather,. On the material such as leather printing, fluorescent printing, inkjet printing, can be with it rings printing. Electrostatic flocking printing. Printing process.Rubber paste printing process the biggest advantage is widely used, color bright, reductive degree is high, but its printing process relative water slurry printing process more complicated, cost is relatively high.