UV inkjet printer effectively solves the problem of plastic film coding

Plastic film is a kind of film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. It is widely used in product packaging in food, medicine, chemical, agricultural and other industries. Among them, food packaging accounts for the largest proportion, such as beverage packaging, quick-frozen food packaging, steamed food packaging, fast food packaging, etc. Plastic film has brought great convenience to people's lives. With the advancement of the anti-counterfeiting traceability system, the demand for printing on plastic films has gradually increased. Because the material is not absorbent and the ink adhesion is very small, the plastic film coding has always been a major problem in the marking industry. The film UV inkjet printer is a piezoelectric high-resolution inkjet printer that uses UV ink to print on the surface of the film. It combines the advantages of inkjet printing technology and ultraviolet curing technology, so that the ink has a fast-drying property. , Good adhesion, no plugging of nozzles, easy maintenance, etc. The working principle of the film UV inkjet printer is the same as that of the piezoelectric inkjet printer. It has hundreds or more piezoelectric crystals to control multiple nozzle holes on the nozzle plate, processed by the CPU, and output through the driver board. A series of electrical signals give each piezoelectric crystal, the piezoelectric crystal deforms, the volume of the liquid storage device in the structure changes suddenly, and the ink is ejected from the nozzle and falls on the surface of the moving object to form a dot matrix, thereby forming text , Numbers or graphics. UV ink is generally composed of 30-40% main resin, 20-30% active monomer, and a small amount of photoinitiator and auxiliary agents such as leveling agent and defoamer. The curing principle is a complex photoreaction. Curing process: After the UV ink absorbs the corresponding violet light by the photoinitiator, it generates free radicals or cationic monomers, polymerizes and crosslinks, and instantly changes from liquid to solid. UV ink will not evaporate, and it can be quickly dried after being irradiated with a certain range of ultraviolet light at a certain frequency. When printing on materials such as plastic, film or metal, the ink adhesion is greatly improved after processing by a plasma surface processor (commonly known as an ionizer), so as to achieve the best printing effect. Film UV inkjet printers can print high-precision content, such as high-quality two-dimensional codes, barcodes, traceability codes, UDI codes, anti-counterfeiting codes, etc., which are widely used in food, medicine, daily chemicals, label printing, card printing, and packaging Printing, medical, electronics, hardware and other industries. The UV film inkjet printer is matched with a rewinder, which can be combined into a roll-to-roll UV variable data printing system to realize variable two-dimensional code printing on plastic film packaging and product anti-counterfeiting traceability.