Metallic ink is widely applied in the metal decoration, stationery, because of its high added value and cause the attention of people.As the screen printing workers should have characteristics of the metallic ink.
Screen printing workers pay most attention to the durability of the metal ink.The ink is divided into solvent-based inks and UV type of ink.Metallic ink printing substrates including steel, aluminum plate, nameplate, metal appliances, etc.Understanding of metallic ink at the same time, to know more about the characteristics of metal material itself, so you can print on metal substrates gives the design that meets the requirements.
Metal printing and divided into two major categories of thermoplastic and thermosetting.Thermoplastic metal printing in the printing ink, printing substrates when dry, not cause ink chemical reaction, ink on metal melting fixation.Thermosetting metal printing called polymerization or crosslinking way, because the ink through the chemical reaction and curing.Need long time high temperature curing, after drying pattern has the advantages of good resistance to solvents and score.
Metallic ink materials used for resin, vinyl resin, polyester and acrylic resin.Vinyl resin has the properties of the thermoplastic, ink easily with substrates or attached, but less friction resistance.Therefore, vinyl resin as the main component of metal printing ink is not suitable for screen printing.
Metal type can be divided into solvent and UV ink, solvent ink, easy to use, UV ink in almost all metal material all can use.
Metal solvent ink has hot air drying method and drying curing way.The dry air way, the ink does not produce chemical reaction, design easy to score after drying of printing ink;If you don't completely dry, pattern is easy to generate the fuzzy phenomenon.Heat curing need long time high temperature drying method, dry ink layer after hardening, good resistance to score.
Type UV metallic ink to UV light, after drying pattern has good chemical resistance and resistance to score, qualitative hard, ink layer pattern is clear.
No matter choose which kinds of metallic ink, want to meet the requirements of screen printing characteristics. For example: ink, ink layer thickness, characterization of resistance, solvent resistance, fastness and so on.According to the product end-use, choosing the appropriate metal ink.For example: indoor adornment with metal printing, can choose metal type thermosetting ink;Product does not require the solvent resistance, can choose to air dry ink solvent metal.
Use metallic ink is the best way to control the ink in the printing process, including: 1, and comply with the requirement of the factory printing ink manufacturers to determine the metal ink standard (or parameters);2, before the formal printing test for metal printing ink;3, sampling inspection in the process of printing;4, after the printing design standard for inspection.
(note: the Wright printing machinery technology, only supplies the reference!)