Technology News: New Technology of Printing Laser Screen
The new technology of printing laser netting is used to make the round screen printing flower net. It is a comprehensive technology integrating computer, laser, automatic control and electromechanical integration. It uses a high-frequency laser generator, the digital information of the printing pattern processed by the computer controls the laser dotting, and the rotation of the rotary screen and the translation of the laser head complete the latitude and longitude scanning movement of the image information, "ablation" of the colloid on the network to realize the printing pattern The dot matrix of digital information is restored on the network base to produce the desired pattern.
The new technology of laser screen making, after the printed patterns are separated by computer, you can "engrave" the patterns directly on the Internet without the need to separate black and white films, and there are no subsequent processes such as exposure, development, processing, etc., no pattern information is lost, and the speed of screen making Fast, high precision and good quality are the most advanced methods for making round nets in the world today. At present, there are defects in printing screen making and printing plate making plays an important role in the entire printing production process. This is because the production quality of the screen pattern is directly related to the appearance quality of the printed fabric.
At present, most printing and dyeing enterprises still use the traditional photoreceptor method. The principle of the photosensitive screen is to apply a thick viscous glue (referred to as "photosensitive adhesive") containing light sensitive substances (such as ammonium dichromate, etc.) to the network blank, and after drying at low temperature, divide the pattern Color black and white film is coated on it, and then exposed, developed, developed, etc., to make the desired pattern on the net. Its core is that the photosensitizer can
The adhesive in the glue solution chemically reacts, crosslinks and solidifies to form a network structure, so that the solid photosensitive colloid is insoluble in water, and the part that has not been irradiated with ultraviolet light can swell and dissolve during tax development, and finally leave the net The blank shows the original mesh. The traditional light-sensitive screen-making method has more than 30 processes from color separation drawing, black and white film production, gluing, exposure, and development to the finished screen. In general, there are many processes, long process routes, and manual operation based on experience. Therefore, there are major problems in fineness, precision, uniformity, reproducibility, speed, and efficiency. In particular, the design style of printing patterns in the world is moving towards fineness and obscurity, and trade orders are developing toward "small batches, multiple designs, fast delivery, and high quality". The traditional photosensitive screen-making method has become to improve printing quality and quick response. Capacity bottleneck.
In fact, they also brought new network defects such as "flying point" and "nozzle clogging". Laser technology advancement promotes future development. Laser screen technology is easy to operate, has few procedures, good quality, and fast speed. It is a latest technology for printing screen. It has high technological content and strong practicality. It is a printing and dyeing enterprise's ability to improve quality and rapid response. The important technical support represents the development direction of printing screen technology. Laser meshing technology currently mainly "engraves" non-metallic materials, that is, colloids on vaporized nets, and "engraves" the desired patterns. According to this idea, it can also be used in a chemical etching industry to make flower rollers, such as roller printing , Transfer printing, and even the engraving of embossing rollers, the application field is very wide.
Laser network technology, reducing resource consumption (such as film), improving operating conditions (such as dark room) is conducive to ecological balance (such as "three wastes"), is a sustainable green processing method. The current problems of laser netting machines are mainly due to the high price, which makes the first phase investment of the enterprise larger and the burden heavier. This is because the laser generator relies on imports. We believe that with the improvement of China's laser technology, the localization of laser generators for grid making will not be too far away, and an era in which laser technology will completely replace the traditional or modern network making with the photosensitive principle will certainly come.
The essence of stamping is transfer, which is the process of transferring the pattern of the stamping paper to the substrate through heat and pressure. Hot stamping, bronzing paper melt adhesive layer, and form adhesion on the surface of substrates, and silicone resin flow of tipping paper mold release agent, carrier and membrane separation, carrier film graphic above will be transferred to substrates. The reason for the transfer is that the heat solution of the heat solution is caused by the adhesion.
Hot stamping is suitable for most printing materials, especially paper, plastic, wood, etc., but it is not completely suitable for non-sprayed metal, ceramic and surface unprocessed glass.Desktop bronzing machines can be placed on the workbench to work, and the area is small and workers can sit down and operate the machine.
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