The main application of the hottest laser technolo

2022-09-28
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The main application of laser technology in flexographic printing

together with computer, atomic energy and semiconductor, laser technology is one of the four great inventions of mankind in the 20th century. Now it has played a major role in the field of printing. Flexographic printing has developed rapidly due to the application of laser technology. Laser is an artificial light source with high frequency, high brightness, strong directivity and good monochromaticity. It is one of the most active science and technology in the 1960s. At present, laser technology has become a popular and practical high-tech. in recent years, key developments have been made, such as the output wavelength can be selected according to needs; Invented high-efficiency ultraviolet laser and so on. All these have created extremely favorable conditions for scientific research and application

laser promotes the revolution of flexographic plate making technology

the high and new technology of flexographic plate making is laser direct plate making (also known as computer direct plate making or digital direct plate making, or CTP). Its core technology is derived from the laser technology that appeared in the 1960s, and has been widely used now. Computer direct plate making improves the speed of plate making, improves the quality of printing plate and printing quality, and is conducive to environmental protection. CTP technology is no exception for tensile testing machines, which can be printed not only on paper, but also on various substrates such as plastic films and composite films, metal sheets, wood, glass, ceramics, textiles, etc. to meet the inspection of the government

because the flexo has a certain thickness, it is much more difficult than the lithography to obtain solid points by exposing the digital information directly on the plate with high-speed laser. However, it can avoid all kinds of disadvantages of traditional plate making methods. For example, plate making with film requires multi-channel image processing, which is not only poor in stability, but also because the total consumption of TPE is scattered and the cost is high. In addition, temperature and humidity have a certain impact on the film, and sometimes you have to beware of scratches and scratches on the film; When the film and plate are closely exposed, the image quality may be damaged due to light diffusion or poor sealing, and the tone of the fine part cannot be reproduced

because smaller dots are difficult to print, they can only be printed with thick lines. With the introduction of flexo direct plate making machine, the image is directly exposed to the flexo plate, which overcomes the above adverse factors caused by the use of film. The flexo plate used for direct plate making is different from the ordinary plate. Its surface is covered with a layer of melting layer - synthetic carbon film, which can also avoid dust particles

during laser scanning, the coating at the light spot is melted and evaporated, leaving no trace, etc. for your reference and review! The electronic universal testing machine produced by StarTech mainly includes floor type electronic universal testing machine, single arm electronic universal testing machine, double arm electronic universal testing machine, microcomputer controlled high temperature universal testing machine and other types, leaving a very clear negative picture on the surface, and then still expose the back of the flexible version in the usual way (at this time, the exposure time determines the thickness of the version). Main exposure (the light source directly exposes the photosensitive polymer at the lower layer through the melted opening on the synthetic film, so there is no scattering or diffuse reflection, so the edge of the point is smoother. Moreover, even if the exposure time of the digital plate is long, it will not cause the dot shape to be virtualized), and finally corrosion treatment is carried out

reprinted from: world science and Technology Report

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