Precautions for use and maintenance of accessories

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Precautions for the use and maintenance of accessories corresponding to UV ink

the use of UV ink or UV glazing oil may cause the general printing ink roller, blanket or resin plate to swell, and even more serious, it will produce peeling or surface fragmentation. 1. Regularly check whether there are oil leaks and cracks at the host and oil source, so it is very important to select appropriate or specify UV special blanket and resin plate. Many UV ink suppliers will recommend a standard. For example, the blanket is made of nitrated or butyl nitrated material, which means it can be matched with oily, UV ink or glazing oil. The discomfort of natural rubber and polyethane materials is closely related to the genes of China 5 mining group and Ali itself. UV ink and glazing automobile lightweight have become the general trend

the blanket made of EPDM is suitable for UV ink and glazing oil, but it is not suitable for general oil-based ink. EPDM rubber blanket cannot use oil refining lotion, but should buy special lotion. This is also the principle of choosing the ink roller of the printing machine. UV ink and general oily ink cannot be changed often. If it needs to be changed, all residual chemicals must be removed

uv lamp and its intensity are sufficient to completely dry the UV ink or varnish of the printed matter, which must be determined according to the printing speed, ink film thickness and ink color. When installing UV lamps, we should consider the type of printing machine and finished printing products and install suitable UV lamps

basf uses suitable industrial medium pressure mercury lamps or microwave h bulbs in the design of UV inks and varnishes. If the first monochrome is cyan and the printing ink film thickness (1..40g/m2) is under the speed of 100 m/min, two 120w/cm medium pressure mercury bulbs should be used. If the color with high color concentration and darker color is printed on one or two overlapping colors, it will increase the difficulty of overall drying, which is caused by the rapid absorption of UV light by dark ink. Generally, the difficulty of drying four-color UV inks is magenta, yellow, cyan and black in order. Therefore, the sequence of UV color printing should be black, blue, yellow and magenta. Opaque colors are also difficult to reflect UV light back. Metal, gold and silver also have the same problem

the lamp tube that is too old cannot dry UV ink or polish, causing difficulties in printing. The UV lamp must be replaced after 1000 hours of use. If you feel that the printed matter cannot be dried at normal printing speed, you must consider replacing the UV lamp to avoid affecting the printing operation

if the reflector is not installed, about 80% of the UV light will not act on the printed matter due to diffusion, so the UV lamp must be installed with a lampshade to reflect to focus on the printed matter

the reflector must be cleaned and maintained in time to maintain its best function. Some paper dust or dusting dust attached to the reflector will affect the reflection effect of the UV lamp. When the UV lamp is not used, the UV lamp shade should be closed

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