Featured ink types and characteristics
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UV ink
The principle that the UV ink is dried by ultraviolet irradiation to form the film, and after the chemical reaction in the light, the photosensitive material (monomer) in the ink receives the energy of the ultraviolet light, excites and bonds with the pigment.
UV ink is used for the outer packaging of high-end goods and the overall or partial glazing of fine prints. It can display the visual effects of bulging, wrinkles, foaming, frosting, gemstones, refraction, varnish, etc., giving people a gorgeous, solemn and elegant Sensory impression.
UV inks dries quickly, and typically dry in more than 10 seconds at standard UV energy. UV ink also has excellent wear resistance, which can reach 15 million times, which is 5-6 times higher than that of general ink.
In use, you should pay attention to: use special ink roller and blanket; keep the printing workshop at 22±3 degrees Celsius; always mix the UV ink frequently in the printing, always pay attention to the water and ink balance; can not be mixed with other inks; Install a reflector; protect it from light below 25 degrees Celsius, not for long-term storage; harm to the printer, pay attention to the exhaust in the workshop, the operator should wear overalls, wear gloves, wear sunglasses; limit the use of UV in the inner packaging of the food ink.
There are creases when the substrate using UV ink is folded, and the price is currently higher.
Thermochromic ink
Appearance color change form: color at low temperature, colorless at high temperature. Available colors are red, rose, peach, vermilion, orange, yellow, yellow-green, grass green, sky blue, turkey blue, blue, dark blue, black, and so on.
Temperature range setting: from -15 degrees Celsius to 75 degrees Celsius. Different temperature ranges can be set according to different product requirements. Generally, the color change temperature is set from 2 degrees Celsius to 10 degrees Celsius, and the color density gradually decreases from low temperature to high temperature until it is nearly transparent.
Photochromic ink
Appearance color change form: The product printed by the photochromic ink is subjected to sunlight (ultraviolet light), and the ink absorbs sunlight (ultraviolet) energy to produce a color change; when it is exposed to sunlight (ultraviolet light), it returns to the original color.
Basic four colors: colorless - red colorless - purple colorless - blue colorless - yellow
Luminous ink
Luminous luminescent pigments must absorb a variety of visible light to store light energy before they can automatically illuminate in the dark and can be recycled indefinitely.
Should pay attention to the use:
Neutral or weakly basic transparent resin should be used and mixed;
It is necessary to stir the raw materials at high speed, preferably in glass or ceramic containers;
The length of storage depends on the amount of moisture and should be protected against moisture. The moisture is too large, it is easy to turn black or form a hard block;
To reduce the precipitation of luminescent powder, use a high viscosity resin, or add an anti-settling agent, and mix well before use. The viscosity can be adjusted with a diluent, and heavy metal compounds cannot be used as an additive;
In order to improve the brightness and illumination time of the printed image, the printed background should be dominated by white or reflective colors;
Screen printing, in order to achieve better lighting effect, the mesh is 80-120 mesh best;
The thickness of the coating and ink is preferably not less than 100um, such as 130-150 um, the best effect (this thickness can be achieved by printing with 80 mesh screen twice);
The recommended amount of luminous powder is 10%-60% of the total weight. The more the dosage, the better the luminous effect;
According to different printing materials, different types of transparent inks are selected. For example, metal-specific inks should be selected for printing metal materials, and PVC-specific inks should be selected for printing PVC materials, and the higher the transparency, the better the effect;
If water-based paints and inks are required, the luminescent powder must be treated with special microcapsules for durability.
Liquid crystal ink
The liquid crystal ink utilizes a temperature difference and the color exhibits a seven-color conversion.
Scented ink
The scented ink encapsulates the fragrance with microcapsule technology and slowly releases the scent in an open space. There are a variety of scent, such as rose, jasmine, strawberry, lemon, sandalwood, lavender, mint, camphor, etc., can be selected according to needs.