As we walk around the streets, we will find that in the vast number of outdoor media ads, huge screen printing advertisements are playing an increasingly important role, ranging from advertisements for advertising light boxes to banner paintings, which can be said to be abound.
In the past two years, a large number of huge screen printing factories have been quietly rising across the country, and they have shown rapid development.
Huge screen printing, with its strong competitive advantage in the market, is directed at the computer inkjet industry. Because of its low cost, fast speed, strong UV resistance, and good reproduction of simulation effects, it is favored by the majority of users.
Synthetic paper, light box cloth, self-adhesive materials are mainly used for shelters, light boxes advertising, shopping mall window advertising, promotional paintings, body advertising, etc., all of which form a special scenery of the city.
Although the banner advertisements will bring certain negative effects to the city, the vitality of this advertising media is indisputable. Due to its low price and various cloth layouts, it has already evolved from banners to banners and paintings of different specifications. , boarded the counters, windows, buildings, telephone poles, roof, boarded a variety of elegance, becoming the new favorite of the current advertising media.
In recent years, with the increasing maturity of computer-to-plate system (CTS) technology in the field of silk screen printing, the entire screen printing industry will undergo revolutionary changes, and digital technology will enable us no longer to use filmmaking.
The Italian company Lmmagine Pubblicita is one of the first companies in the world to use this technology. With advanced automatic degreasing machines, large coating machines, computer-to-plate makers and extraordinary technological level, the single sheet can print large-format posters of up to 3mX8m in size, and can be connected to a size of 22m×14m with almost no color difference, and due to Eliminating the cost of the filmmaking process allows it to be printed with five sheets, which is far cheaper than inkjet printing. Numerous positive factors make it occupy the entire Italian market and even Europe.
Domestic industry insiders are also paying close attention to the development of CTS technology. Beijing has already introduced the system and has already put it into use. South China is still adopting the method of film copying to make the screen version. It is believed that some companies will soon introduce CTS systems. Used in huge screen printing industry.
The production process starts from Zhangnet. The mesh number is 55 to 62 mesh/cm and the frame is an aluminum frame. However, the widest width of the mesh fabric in the market is only 360cm and the width of the aluminum frame used by them is 380cm. Firstly, on both sides of the net cloth, a widening cloth strip is added. When the nets are opened by the machines designed by themselves, the seams on both sides are just stuck on the edge of the aluminum frame. The screen panel of the Zhanghao net will be sent with a special pallet truck. The degreasing process is done in the screen printing department. This automatic degreasing machine was built by the company Buisine according to the drawings designed by Immagine. Each of its compartments is dual-functional and can be used for both degreasing and switching to stripping. Membrane function.
The coating is applied in three stages using a G-420 semi-automatic coater manufactured by Grunig Interscreen (more than 9 meters is too large) because there is only about 1 mm overlap at each seam. In addition, the four-color screen dot lines for drying are all 3 to 6 bar/cm (7.5 to 15 lines/inch), so the joints cannot be seen at all after making a good version.
Each screen dot screen is made of silk screen screens using a Proka direct plate maker specifically designed by Proditec for Immagine.
In the difficult problem of making four-time accurate printing of extremely unstable materials, they also skillfully solved it. The aluminum plate of the screen aluminum frame is 100×40×4mm. After the aluminum frame is opened, it will be due to the network. There are obvious changes in the relationship. However, when the screen is clamped to the frame of the Proka plate-making machine through the air pressure clamp frame, the entire plate is flat. Similarly, under the folder of the mechanical type plate clamp, the screen printing machine online version is also The whole is flattened, which solves the problem of the frame modification.
But what can we do to accurately transport and align the PVC tape, which measures up to 850 x 450 cm in size, onto a screen printing station and align it four times?
After this many years of experience, they have developed a unique set of specialized skills.
PVC cloth cannot pass softly through the screen printing machine, and it must be firmly fixed on the support frame. They fix the PVC tape on the frame like a web. The difference is that they do not use viscose to stick the mesh. The PVC cloth is clamped by a full row of clip saws. After printing PVC, together with the framework will be layered on a specially designed drying rack, and each layer of PVC also reserved a certain space to facilitate the drying of the ink.
Machine printing is the same as the four-color printing process for any single color screen printing line. But Immagine's screen printer is not available on the market. It is a semi-automatic screen printer designed and developed by the company. During the printing, the PVC cloth and the frame will be introduced into the screen printer. The printing table (the size is slightly smaller than the PVC frame) will automatically rise to flatten and hold the PVC cloth. Then the mesh frame will come down to print the ink on the PVC. Before the second color, the third color and the fourth color are officially printed, they will adjust the tension of the frame jig so that the frame can be aligned with the previous color. The actual situation. This seems simple and primitive, but we are extremely surprised because they can adjust such a large print to such a precision.
They print very smoothly, and they print indefinitely. The squeegee action on the screen printer is controlled by the control box. The squeegee is guided by the guide rails on the screen plate to make it smooth and smooth. The design of the blade like the ink-jet knife is a pneumatic type. The scraper can be converted from a 90 degree vertical state to a horizontal state when it is to be cleaned or replaced.
The version adjustment of the net version and the debugging of the net printer are printed. The harmonization of the entire team work by the workers seems to us to be really wonderful. If it is you, how do you control the quality of a huge 3m wide print?
The screen layout is too large, even if it is bent over the screen printer and checked on the screen. On Immagine's screen printing machine, if necessary, you can climb to the frame to check the middle part of the screen. If you wear clean and soft shoes, you can even climb to the center of the screen to check. Although this phenomenon does not happen every day, it will definitely impress you once you see it.
The actual printing operation and the rest of the processes are controlled by the control box. Screen loading and unloading can be performed manually or automatically, as long as three workers can effectively operate the entire printing line, which can produce 80 brushes per hour.
The printed screen needs four talents to get it, because in addition to the weight of the aluminum frame itself, a heavy ink is added. For the first time, we also saw their amazing scene of recovering ink from the screen. There is a hole at one end of the screen. The hole is affixed during printing. However, once the ink is printed and the hole is opened, the ink will automatically flow into the ink tank under the screen printer. The design is very simple. , but it is very effective.
Finally, the screen will be sent to the automatic cleaning machine of the Busisine to perform the process of stripping and degreasing. The water flow control of the machine is completely closed, not only because of the importance of cleanliness of the screen cleaning. More for the concept of environmental protection.
Shanghai Liuyuan Trading Co. , Ltd. , https://www.ly-weighing.com