Application of UV light source in printing industry
In the printing process, UV light sources can be used for UV curing of exterior coatings such as blueprints, color printing, paper packaging, decorative materials, printed tin cans, etc .; can also be used for non-silver film, diazo salt film, film, resin plate, PS Edition, exposure, etc. There are many special light source products, which are applied to different printing links according to their respective parameter characteristics. Here we introduce three kinds of special light sources such as plate making, photo printing, and light curing. Now let's enjoy their style together.
Plate-making light sources
Common plate-making light sources are mainly divided into five categories. The first category is incandescent, infrared, and tungsten halogen lamps; the second category is mercury lamps; the third category is metal halide lamps; the fourth category is xenon lamps; the fifth category is lasers for plate making. Sources for plate-making and common plate-making sources: carbon lamp, high-pressure mercury lamp, hernia lamp, fluorescent lamp (cold light lamp), metal halide lamp .
UV curing light source There are two types of light sources used for UV hardening materials: electrode-type UV light sources (ArcUVLamp), and electrodeless UV light sources (Electrode-lessUVLamp). The electrode-type UV light source is a quartz tube. After evacuating, a certain amount of mercury is injected or some special information is filled. An electrode is placed at each end and then sealed. The power supply is connected. The electrodeless UV light source is made of a quartz tube. After evacuating, a certain amount of mercury is injected or some special materials are filled and sealed. There are no electrodes in the tube. UV light is generated by microwaves that stimulate mercury or special materials in the lamp.
Industrial UV curingIs a very large application market, such as micro speakers / telephones, mobile phone cameras, magnetic heads HDD, coils, sensors, micro motors, CD / DVD heads, mobile phone keyboards, digital cameras, small LCD screen LCDs, touch screens, LEDs, displays, lenses UV glue curing for assembly, crystal bonding, light engine, optical device potting / bonding / sealing, etc .; polymer medical device bonding (catheters, needles, pumps, etc.); automotive parts / aircraft coatings / mobile phones / digital products UV curing of shell coatings / packaging coatings; curing of wood flooring / laminated flooring / furniture coatings; inkjet printing / offset printing / flexible printing / letter printing / screen printing and ink drying; automated dispensing curing equipment / coating curing / ink Curing, etc .; desktop / conveyor curing equipment; spot curing equipment; DVD / CD production equipment; LCD production equipment; coating spray curing production line; semiconductor process equipment; small printing equipment; coating / ink R & D; equipment integration; glue / coating / ink R & D; conductive adhesive for semiconductor technology; UV adhesive coating; mobile phone camera lens technology; touch panel bonding technology.
Traditionally, the curing process equipment uses a UV mercury lamp , that is, a UV-curable mercury lamp. The life of this lamp is only 500 to 1,000 hours, plus preheating before each use, so the actual effective use time is much lower. In 500 hours. Moreover, the traditional mercury lamp will generate a lot of heat and infrared rays, which will damage the coating. Therefore, it is necessary to use a longer working distance, which will further reduce the use efficiency. Moreover, a large amount of heat and infrared rays cause the system to have high heat. Coupled with the huge equipment volume, large energy consumption, short life, mercury, and ozone generation, these are the disadvantages of traditional ultraviolet curing mercury lamps.