Lightbox advertising screen printing technology

Screen printing, there are many people now like it for short screen printing. Screen printing is an indispensable printing method in advertising production, especially playing an active role in outdoor advertising. It is compared with several kinds of pressureless printing such as computer inkjet. The equipment investment is less, the printing production cost is low, and the screen printing is applicable to any advertisement carrier such as nylon cloth, light box cloth, organic board, PVC, etc., and the printed graphic is clear, colorful, firm, and sun-dried. Leakage does not fade. As far as the current overall level of printing in the Mainland is concerned, screen printing is still an important means of lightbox advertising printing.

The screen printing on the light box is different from the screen printing other printing materials, and it is difficult. The former is printed on a transparent or translucent substrate, and the latter is printed on an opaque substrate. Therefore, it must be noted that the production consistency from plate making to printing and the possible adverse effects on the advertising image of the light box The various factors. First of all, it is necessary to regulate and control the ink layer thickness and uniformity of the advertising image of the light box directly in the four-color screen printing.

In the screen production of four-color screen printing light box advertisements, the screen is an important factor. Should use the new special wire mesh, yellow wire mesh for four-color printing, if the recycling of recycled wire mesh, due to the residual marks left on the mesh cloth, no matter how minor, will affect the printing image, before the screen coating photosensitive polymer Deal with oil must be very careful. Tension must be tight and the tension must be at least 20 Newtons per centimeter. Tension tester is required. If the tension is too low and does not meet the standard requirements, printing will result in uneven printing. In addition, there should be enough room in the non-printing area around the printed image area to avoid distortion of the printed image.

When screen printing lightbox advertisements, it is very important to choose the applicable screen printer. The requirements for screen printers must be uniform with squeegee pressure and speed to operate. Because in order to obtain the best effect of printing, consider using a large-format semi-automatic screen printer, that is, using such a screen printer. When printing, it is also necessary to check whether the squeegee moves at a uniform speed without wobbling. The easiest way to check the swing is to print a color block and check if it is parallel to the direction of the squeegee. The ink return plate on the screen printing machine should also have a good uniform plate edge (edge), absolutely no gaps, and consistent speed, angle and pressure throughout the printing process.

As the high-tech content of printing technology continues to increase, it has greatly promoted the development of outdoor advertising printing industry. Outdoor advertising (including light box advertisements) has gradually been established as the fifth largest media in Chinese advertising. With China's accession to the WTO, the development of outdoor advertising printing will become more standardized, standardized, and international. The amount of outdoor advertising in the United States has increased year by year. In 1996, it was 3.76 billion US dollars, which was 7.3% higher than that in 1995. It was 4 billion US dollars in 1997, and it reached US$4.3 billion in 1998. The annual growth rate is about 6%. The US$4.3 billion equivalent of RMB is more than RMB 30 billion. At present, China’s outdoor advertising accounts for only 25%, and its annual turnover is about RMB 7.5 billion. Therefore, China’s future outdoor advertising printing market has great room for expansion.

Gravure applications ── resin surface printing, pad printing machine printing China News Source: Author: Send to a friend Add to Favorites general surfaces such as toys face, such as the calculator keyboard arcuate convex, curved dishes such as depression or Plates, other rounds like golf balls, etc. The best way to print is to use pad printing. However, most printing plates used in the past were copper plates or steel plates. There are many variables in its platemaking process, and quality control is not easy. Platemaking potions are toxic and affect the ecological environment. The steel plate's molecular particles are very rough and cannot represent the detailed part of the image.

BASF exclusively provides you with resin gravure plates. Plates are easy to wash and use for general water. The resolving power is up to 300 lines or more. Special resin components can easily transfer the ink in the grooves. The hard resin surface can be scratch resistant to tens of thousands of brushes.

Resin gravure platemaking process

Cutting board

The size of the cut must be 2 to 4 cm larger than the required size to protect the edge area of ​​the image.

Punching

After punching, punch holes according to the required number of holes.

Exposure

The purpose of the exposure is to harden the resin layer without images and lines due to exposure.

Wash plate

The part of the plate that has not been exposed to light will be dissolved and washed away during the process of washing; the depressed part of the plate will be the image and lines on the plate.

Bake

The wash solution that penetrates into the imprint during the process of washing will be evaporated in the baking process to restore the sufficient hardness of the plate.

After exposure

No need to use film. The post-exposure treatment can increase the hardness and anti-friction force of the plate.

BASF Germany offers several resin gravures to meet your printing needs. For example, there are two types, nyloprint and high-volume nylograv. Nyloprint is suitable for simpler work. There are three thicknesses for you to choose and adjust the amount of ink; such as WT 30, T 30, S 58W, S 73SW, S 73K and so on. Nylograv is suitable for more exquisite work, it only has a thickness of WSA 52, ST 52Q, ST 52K.



Source: Printing Technology