Although screen printing has a history of thousands of years in China and is listed as one of the four major printing methods, it is considered difficult because of its large hand-made, slow speed, low accuracy and stability, and its experience and employing many people. The backward printing technology of Denggeya has not been well developed in China. In recent years, with the increasing demand for printing quality and effects, coupled with the continuous increase in the prices of printing consumables since last year, profits have dropped sharply. Many small and medium-sized printing companies have begun to feel the pressure of survival, and large printing companies have also found investment. More expensive offset printing equipment does not bring corresponding profit growth to the company. In the situation where the printing industry is facing improvement and integration, everyone invariably turns their attention to value-added printing. It is hoped that by highlighting the personality and characteristics of print products, the quality and application of print products will be enhanced with particularity, and printing businesses will be expanded and profits will be increased. At this time, people realized that silk screen printing has long since gotten out of the conventional impression-based manual operation mode and developed into an industrial technology. It can not only print common patterns, but also become the simplest and most value-added service available. Economic way.
In fact, in Europe and the United States and other advanced countries and regions, silk screen printing has become an indispensable basic configuration for many offset printing plants, and users are increasingly expecting high quality screen printing products. This undoubtedly gave domestic printing companies a good Revelation, that is: the screen printing as a surface treatment is an inevitable trend. This is both a favorable opportunity and a big challenge for domestic printing companies. Opportunities arise from the increasing demand for value-added services in domestic and international markets; the challenge arises from whether the printing companies have the means to invest in good equipment in the new round of consolidation of the printing industry and pass through many domestic competitors. Quality comes to the fore rather than being entangled in the price war from the very beginning. At the same time, how to use this indispensable printing process and China's cost structure advantage to expand domestic business while gaining a share in the international market.
Screen printing characteristics and its application in offset printing
Screen printing has unparalleled characteristics of other printing methods, such as: thicker ink layer can be adjusted; color (including UV) effect is rich, strong texture; can be large spot color or dot printing; wide range of substrates; apply a variety of different Ink (solvent, UV, water, etc.). These features make the screen printing application a very wide range of applications, specifically to the offset printing industry, which involves:
★ Commercial Printing ★ Packaging Printing ★ Calendar Greeting Cards ★ Plastic Cards (Credit Cards, Smart Cards, Phone Cards, etc.)
★ Lottery tickets, raffle tickets, banknotes
The areas and effects of screen printing applications are even more varied. The following are the main ones:
★ Partial or window-type UV glazing ★ Special UV or other ink effects (relief, diffusion, three-dimensional, yin and yang, diamond pattern scrub, odor, luminous / thermochromic ink, etc.)
★ Protection, anti-counterfeit printing ★ Braille printing ★ Heavy metals, highlighting of local patterns/fonts ★ Spot color printing
SPS®: Leader in Precision Screen Printing Equipment
To overcome the many defects of traditional screen printing, modern screen printing equipment is required:
★ The accuracy of registration and repeatability must be high, so that it can be put back onto the original printed matter (from the first to the ...), and the image can not be deformed or stretched. ★ The speed and output must be fast. Because the offset printing volume is usually larger ★ The ink layer must be uniform and stable without jumping or wavy appearance. ★ It can be synchronized with the drying or curing function. ★ Regardless of the print size, the quality must be consistent for a long time.
In view of Germany's leading position in the manufacture of printing machinery and equipment, the German SPS® company has naturally taken the lead in producing this demanding screen printing equipment. SPS® was founded in 1953. In 1957, it invented the principle of the original stop-drum technology and became a sample for many subsequent screen printing equipment manufacturers. For more than 50 years, SPS® has always been developing the roller screen printing line as its core business, providing the industry with an original SPS® one-stop solution (paper-printing-drying-sheet collection). As an international multinational company, SPS® components have passed stringent quality control, design and assembly production. Some of the components are derived from well-known brands. In addition, SPS® has established a network with various German offset presses and European consumables manufacturers. Close relationship. For over half a century, SPS® has always been known as Heidelberg in the screen printing industry. This honor has its origin in its unique drum design. SPS® original stand-still 360° roller screen printing technology, the unique flatbed roller design provides virtually zero grid distance, eliminates image distortion, achieves maximum register accuracy, and repeat accuracy is up to ±0.03mm, and is not subject to print and Speed ​​effect; built-in paper holder provides maximum protection and perfect printing quality for squeegee and screen; the drum has built-in suction and blowing function, which can quickly detach from the paper while keeping the paper tight against the drum to improve the printing quality.
Advanced scraping system. SPS® is the only PEH, which is a pneumatic, hydraulic and electric suspension bridge system to ensure that the pressure and ink layer remain stable at any speed and print volume, greatly improving the printing accuracy.
SPS prints at speeds up to 4,000 sheets per hour (including UV drying) when integrated with original feeders, dryers, and stackers in a unified configuration. The optional carbon fiber scraper C105 is able to provide a constant angle to ensure print clarity. At the same time, the SPS® is easy to set up, maintain and maintain, and its scratch-resistant design is more suitable for precision screen printing. Strict demand.
"If a worker wants to do good, he must first sharpen his tools." Drupa 2008 allows us to clearly recognize that: Screen printing will become an important means and inevitable trend of value-added printing, and the exquisite and gentrification of product packaging and printing, as well as the specialization of vision, smell and even touch will also become the next step. The direction of development and profit growth of the printing and packaging industry will be bright, and good screen printing equipment will undoubtedly become a prerequisite for depicting this magnificent blueprint. There is reason to believe that in the near future, SPS® will inject new vitality and vitality into the printing industry just as Heidelberg pioneered the domestic printing industry.