Maintenance skills of UV light source and accessor

2022-08-24
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Maintenance skills for UV light sources and accessories in UV printing

the use of UV ink or UV varnish may cause the swelling of printing ink roller blanket or tree finger plate. Serious swelling will produce peeling or surface fragmentation, so it is very important to use the designated rubber and tree finger plate

many UV ink suppliers will recommend a scope of application, such as the materials treated by color nitrification or butyl fibrillation nitrification of rubber blanket can be matched with oily UV ink and glazing oil; Natural rubber and polyethylene materials will swell, and are not suitable for UV inks and varnishes; EPDM rubber is especially suitable for UV inks and varnishes, but it is not suitable for general inks. The ink roller of the printing machine is also selected according to this principle. UV ink and general oily ink cannot be often changed. If it needs to be changed, it must be cleaned and all residual chemicals must be removed

generally, the type of printing machine should be considered when installing UV lamps. BASF UV inks and varnishes are suitable for industrial pressure mercury lamps or microwave h bulbs. If the first one is monochrome, two 120w/cm medium pressure mercury bulbs should be used. Generally, the difficulty of drying four-color UV inks is magenta, yellow cyan and black in order. Therefore, the order of UV color printing "Fan said should be black, cyan, yellow and magenta

some colors are very difficult to mix, such as green is made of yellow and cyan; In addition, the blending of opaque colors is also very difficult, because it reflects UV light back. Similarly, metal color, gold and silver also have the same problems

the service life of UV mercury lamp is certain. The lamp tube that is too old cannot dry u.v ink or polish. U. In the specification of V lamp, this paper mainly summarizes the types, structural characteristics and performance of biomedical materials used in Ophthalmology, with emphasis on optical lens column materials and scaffold materials, intraocular lens materials, artificial vitreous materials, artificial eye prosthesis and artificial eye materials, artificial lacrimal passage and tear materials, corneal contact lens materials and ophthalmic drug carrier materials used in artificial cornea, Looking forward to the development direction of biomedical ophthalmic materials, the measurement with a value close to zero is inaccurate, and most of them indicate that the UV lamp must be replaced after about 1000 hours of use. In actual production, if you feel that the printed matter cannot be dried at normal printing speed, you must consider replacing the UV lamp

if the reflector is not installed, about 80% of the u.v light will not act on the printed matter due to diffusion, so the UV lamp must be installed with a lampshade to reflect and focus on the direction of the printed matter. Colleagues, the reflector must also be cleaned and maintained at any time. If the dust of some papers in many lightweight materials or powder spraying dust is attached to the reflector, it will affect the reflection effect of UV lamp; If the UV lamp is not used for a long time, the UV lamp cover should also be closed to prevent dust from entering

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