The new technology of printing laser mesh is used to produce circular mesh printing flower mesh, which is a comprehensive technology integrating computer, laser, automatic control, and electromechanical integration
The technique. It uses a high-frequency laser generator to control laser marking based on the digital information of the printed pattern processed by the computer. The scanning motion of the image information in the latitude and longitude directions is completed through the rotation of the circular mesh and the translation of the laser head, "ablating" the colloid on the mesh to achieve the dot matrix restoration of the digital information of the printed pattern on the mesh base, and produce the desired pattern.
The new technology of laser web making allows for direct "carving" of printed patterns on the web after computer color separation, without the need for black and white film, exposure, development, or processing
After the subsequent process, there is no loss of flower shaped information, and the net making speed is fast, the accuracy is high, and the quality is good. It is the most advanced circular net making method in the world today. At present, there are defects in the printing network, and printing plate making plays an important role in the entire printing production process. This is because the quality of screen printing directly affects the appearance quality of printed fabrics.
At present, most printing and dyeing enterprises still use the traditional photosensitive mesh method. The principle of photosensitive mesh production is to apply a specialized viscous adhesive solution (referred to as "photosensitive adhesive") containing photosensitive substances (such as ammonium dichromate, etc.) onto the mesh blank. After low-temperature drying, the pattern color separation black and white film is coated on it, and then exposed, developed, and rinsed to produce the desired pattern on the mesh. Its core is that photosensitizers can interact with ultraviolet radiation
The adhesive in the glue undergoes a chemical reaction, crosslinks and solidifies, forming a network structure that makes the solid photosensitive colloid insoluble in water. The parts that have not been irradiated with ultraviolet light can expand and dissolve during development, and finally leave the mesh blank, revealing the original mesh holes. The traditional photosensitive mesh making method involves more than 30 processes, including color separation and drawing, black and white film production, gluing, exposure, development, and finished flower mesh. Overall, there are significant issues with precision, precision, uniformity, reproducibility, speed, and efficiency due to the large number of processes, long process routes, and manual operations relying mainly on experience. Especially in today's world where the design style of printing patterns is moving towards precision and ambiguity, and trade orders are developing towards "small batches, multiple colors, fast delivery, and high quality", traditional photosensitive screen making methods have become a bottleneck in improving printing quality and rapid response capabilities.
In fact, they also bring new mesh defects such as "flying spots" and "nozzle clogging". The advancement of laser technology promotes the future development of laser screen making technology, which is easy to operate, has fewer processes, good quality, and fast speed. It is the latest technology in printing screen making, with high technological content and strong practicality. It is an important technical support for printing and dyeing enterprises to improve quality and rapid response capabilities, representing the development direction of printing screen making technology. Laser mesh technology is currently mainly used for "carving" non-metallic materials, that is, vaporizing the colloidal material on the mesh, and "carving" the desired pattern. According to this idea, it can also be used in the industry of making flower rollers by chemical corrosion method, such as roller printing, transfer printing, and even engraving of embossing rollers, with a wide range of applications.
Laser mesh technology reduces resource consumption (such as film) and improves operating conditions (such as darkrooms), which is beneficial for ecological balance (such as "three wastes"), and is a sustainable green processing method. The current problem with laser screen making machines is mainly the high price, which results in a large initial investment and heavy burden for enterprises. This is because laser generators rely on imports. We believe that with the improvement of laser technology in our country, the localization of laser generators for wire mesh production will not be too far away, and an era where laser technology will completely replace traditional or modern wire mesh production based on photosensitive principles will definitely come.
Cowint is the largest DTF Film Factory in China
