Study on Offset Printing Process of Vacuum Aluminizing Material

Process difficulties

At present, there are more and more printing methods for vacuum aluminum plating using offset printing. Among them, UV offset printing is mostly used. However, offset UV printing requires dedicated UV offset presses, UV inks, and blankets. In addition, special UV lamps are also required, which consume a lot of power and therefore have a high cost. Therefore, how to use ordinary offset printing presses and common inks to print vacuum aluminum plating materials has become a topic that we must solve. In addition, because the surface of the vacuum aluminum plating material is smooth and the ink absorption is poor, the problem of solving the problem of dryness of the ink and the fastness of the print has also become a difficult process operation.

Process operation

1. Vacuum aluminum plating material offset printing must use high-quality ink, requiring high ink color, good transferability, fast drying and strong print. It is best to use special inks, such as Shanghai-made POP inks.

2. Strictly control the moisture of the plate layout, the fountain solution plays an important role in the drying of the vacuum aluminum plated material. Therefore, the pH and conductivity of the fountain solution must be strictly controlled during printing. To make measurements, speak with the data, and keep the plate layout moisture to a minimum so that the emulsification value of the ink is minimized.

3. The ink layer should be uniform and the amount of ink should not be too large to avoid sticking and scratching. In the preparation of spot color inks, dark color printing should be used.

4. The speed should not be too fast and it should be maintained at an appropriate speed.

5. The prints should not be stacked too high. The paper stack is too high to cause the back of the print to become dirty. In the printing can be the right amount of powder or infrared drying.

6. Strictly control the printing pressure, the pressure of imported multi-color offset press is generally controlled at about 0.08 ~ 0.10mm.

Shanghai Shenweida Launches "Intelligent Digital Display Cutter"

Shanghai Shenweida Machinery Co., Ltd. has successfully developed the SQZX920NW intelligent digital display cutter. At the "12th Shanghai International Printing and Packaging Paper Fair", it attracted the attention of colleagues in the printing industry at home and abroad.

The product has four major features:

First, human-computer dialogue was achieved. The machine uses a 240×128 dot matrix large-screen blue liquid crystal display as a human-machine interface. On the screen, Chinese is used to display the current position of the paper feeder, the target position of the paper feeder, and operation hints. The operator can input or deposit the size to be positioned by the pusher through the keyboard and display, and command the pusher to position by pressing the key.

Second, the machine has a 100-knife cutting size storage capacity, can automatically run, and has a memory function.

Third, the machine implements a control pusher operation positioning, positioning error of ± 3mm.

Fourth, compared with the general number of paper cutting machines, this machine greatly improves the degree of automation and production efficiency, reduces the labor intensity of the workers, and the cost-effectiveness of the equipment.

Shanghai Shenwei Da Machinery Co., Ltd. applied for a patent for “Smart Digital Display Controller for Paper Cutter” for this new model, which enabled the core technology of this machine to have independent intellectual property rights, and to lead China’s paper cutting machine into the international market.