The most popular screen printing technology is ful

2022-07-28
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Silk printing technology is full of vitality

silk printing, a powerful printing method, continues to maintain strong vitality in the field of narrow width rotary printing industry

silk printing is an ancient printing method. About a thousand years ago, silk printing was born in China as an art medium and soon spread to Japan and other Asian countries. Academic circles believe that this printing method was introduced into Western Europe in the late 18th century

silk is widely used in industry, decoration and art markets all over the world. Textiles, especially clothing, from the simplest to the most complex decoration process, largely rely on silk printing to achieve. The packaging market also has a place for silk printing. Today, we see that the application of silk printing in the emerging market of electronic products is expanding

The only advantage of silk printing is that the ink layer is thick enough. The ink layer thickness of UV relief printing is 5 microns, UV offset 1 5 μ m, gravure printing is μ m, UV flexo printing is μ M. In silk printing, the thickness of ink layer is micron, and even greatly exceeds this range

today's screen printing plates are made of nickel and steel, which are filled with various grids to store different amounts of ink. The screen printing plate is coated with photosensitive emulsion (each supplier has its own proprietary formula) for imaging printing. The traditional silk printing imaging process is as follows: during plate making, a certain thickness of photosensitive adhesive is coated on the silk and dried, a photosensitive film is formed on the silk, and then the positive image plate making negative is pasted with the coated silk and put into the plate printer for exposure. In this way, the image and text parts on the silk are not cured because they are not exposed to light, and the non image and text parts are cured by light. After development and washing, the uncured photosensitive materials of the image and text parts are washed away, so that the silk hole is a through hole. The non graphic part of the photosensitive material solidifies and blocks the hole. When printing, ink is leaked from the silk hole of the graphic part, but not from the graphic part, so as to obtain the printing ink

for the label printing business, the most widely used is to use silk printing to print white opaque ink to form a thick ink base, so that other colors can be printed on it through flexo printing or other printing methods. For example, in the field of cosmetics labels, transparent film materials are now more popular. This material can be made into high-quality and exquisite labels through combined printing process. Generally, before printing other colors, the first color group uses the rotary transfer unit to print white ink, which is primed on the transparent film. The primed label is more colorful. If the customer wants to get a thick ink layer metal package, he can change the thickness of the ink layer by adjusting the mesh number and hole opening rate of the version. The rotary wire printing unit has been used as a separate printing unit to meet this application purpose for many years. It can be wired and installed anywhere on the rotary printing production line

with the growing maturity of the brand and the gradual intensification of competition, the use of white opaque ink to print the bottom ink of the label is no longer the main means of differentiation. Many labels require more than one color to be printed with silk printing, because silk printing can bring better tactile feeling. In addition, silk printing can create a very expressive and complex overall aesthetic feeling on the flat substrate

The application growth of

silk printing is also reflected in the field of anti-counterfeiting products. The micro tracer is fused with the coating and printed onto labels or other packaged products via silk printing. Such tracking agents, when scanned, will display information about the product brand. This application is intended to prevent counterfeiting of products

eight years ago, a product manager of the narrow width rotary printing manufacturer Gerais company pointed out in a report that almost all the printing production lines sold by the company included at least one rotary silk printing unit. Today, that has changed. Now, most of the printing lines we sell are equipped with several silk printing units. Jim

flynn, printing technology manager of Gerais Philadelphia branch, USA, said that these technologies ensure the continuous and stable production of high-quality parts in key utilization. On average, we sell 4 units of silk printing materials in each printing line. The working conditions are very complex, most of which are used to process anti-counterfeiting products. Some are used to polish wine label products to replace the indentation process. Today, end users can obtain many special effects through silk glazing. The silk printing market has not shrunk. We see that it is still growing. Rdquo

use silk printing for local glazing. Compared with the surrounding printing effect, the glazing pattern appears bright, bright and three-dimensional. Because the screen printing ink layer is thick, it will bulge after curing and look like an indentation. Silk printing is superior to offset printing in terms of height, smoothness and thickness, so it has always been favored by users and manufacturers

the embossing effect requires a very thick ink layer thickness. Flynn said that it generally requires 45 microns or more. We can provide different screen plates to meet this demand. Screeny printing plate is one of the silk manufacturing product brands of Swiss Gerais company. This printing plate is characterized by a kind of microstructure, which ensures the best fluidity of the ink. The stable structure of the silk and the balance structure provided by the photosensitive resin can ensure the high-quality and consistent printing effect. To get clear lines, field, relief and relief effects, users can choose the appropriate plate from a variety of screen plates. A year ago, we developed a new line technology s line, which can ensure higher stability of printing. The ink thickness of screen printing plate processed by S-line will be twice that of ordinary screen printing plate. We have applied this technology to develop a new eye plate to polish and achieve the embossing effect. In addition to the 45 micron mesh to achieve the polishing and embossing effect, we also provide 250 micron mesh to meet the requirements of braille printing. With continuous efforts and technological innovation, we now have 20 different types of screeny printing plates

with the emergence of new materials and the improvement of process technology, silk printing will certainly be adopted by more and more printing enterprises, and its application range will also expand the resolution of 300000 yards

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