Six categories of ink


1 Fluorescent ink:

Fluorescent ink is made of fluorescent material dissolved in the corresponding resin. The particles of fluorescent pigments are generally thicker, the types of bonding materials are more, different bonding materials will produce different fluorescence, in the use of fluorescent ink should ensure that it has sufficient concentration, the ink layer on the printing product is thicker, so as to ensure satisfactory fluorescence effect. Fluorescent ink after screen printing printing bright color, decoration effect is very good, under the action of visible light and ultraviolet light, can emit sparkling fluorescence.

2 Photochromic ink:

UV ink photoinitiator is a compound that is easily excited by light, excited into free radicals after absorbing light, and the energy is transferred to photosensitive molecules or photocrosslinking agents, so that UV ink photocuring reaction occurs. UV ink has become a more mature ink technology, and its pollutant emissions are almost zero. In addition to solvent free, UV ink also has such advantages as not easy to paste, clear dot, bright ink color, excellent chemical resistance, consumption and so on.

3 Light storage and phosphorescent ink:

Light storage pigment is the use of inorganic fluorescent material with phosphorescent effect of some zinc sulfide. Copper fluorescence, calcium sulfide. Prepared from bismuth fluorescence, etc. Inorganic fluorescent matter is by crystal light, if the pressure will make the crystal rupture, resulting in reduced luminosity, so the general use of screen printing is more suitable, ink carrier and fluorescent matter in use mixed. The characteristic of phosphorescent ink is to absorb light and then emit light at a certain wavelength within a certain time. The pigment of this ink is zinc sulfide containing a small amount of impurity (such as zinc cadmium sulfide), it is afraid of acid, afraid of alkali, so it requires the use of neutral resins such as cyclohexanone resin, fiber ester and ether. In addition, heavy metals, desiccant and drying oil should not be added to the ink to avoid damaging the pigment substance. The binding material used should be transparent and be able to penetrate ultraviolet light. This ink is mainly used for printing advertising and signs, but if phosphorescent ink and fluorescent ink are mixed for anti-counterfeiting packaging printing, you can receive good packaging decoration and anti-counterfeiting effect.

4 Special printing ink:

Printing ink is mainly composed of colors, fillers, linking materials, etc., of which the composition of the color is an important part of determining the color and brightness of the printing, many manufacturers and ink factories customize the special ink for each product printing, and the formula is kept secret by the ink factory.

5 Compound ink:

After two or more kinds of anti-counterfeiting inks are mixed according to a certain proportion, composite inks with new properties can be developed, and it will be difficult to imitate if the ink formula is not fully mastered.

6 Other anti-counterfeiting screen printing inks:

Plastic anti-counterfeiting ink. Suitable for printing on PP, PVC, PE, PS, ABS, PC and other plastic products, with 150-200 mesh polyester net, each kilogram of ink can be printed 20-30m. Dry naturally or at 130℃ for 3min.

Metal, glass, ceramic anti-counterfeiting ink. Suitable for printing on metal temperature indicators, color-changing glass water utensils, color-changing milk cups and ceramic tea sets and other gifts, with 70-100 mesh polyester mesh, per kg of ink can be printed 10-20m2, drying conditions of 25℃, 48h or 120℃, 45min.

Waterborne security ink and printing paste. Suitable for printing on paper, cotton, woven fabrics, T-shirts, sportswear, etc., with 80-150 mesh polyester net, each kilogram of ink can be printed about 20m2(cotton will be less than this number), drying conditions of 130℃, 3min.

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