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The strong growth of the printing industry has led to an increase in the demand for printing plates. As the PS version that dominates printing plates, its indicators such as production, consumption, and export have reached the highest levels in history. This growth is undoubtedly a good thing for the majority of printing plate manufacturers. However, the contradiction between the large demand for aluminum plate base and energy shortages in the PS version industry and the increasingly prominent contradiction between the large aluminum production volume and low quality Therefore, PS manufacturers have encountered difficulties and challenges in the procurement of raw materials and funds.
As the consumption of the PS version increases, the number of prints decreases, the degree of damage of the plate material decreases, and the recycling of the plate material creates very favorable conditions. The recycled PS version is used as a model for the recycling economy of the printing equipment industry. The advantages in terms of resource reuse, cost, etc. are increasingly drawing attention.
In China, the development of the recycled PS version has been in the past for more than 10 years. Beijing Pritech Electronics Co., Ltd. has sold recycled PS plate processing equipment to hundreds of enterprises across the country, including a single continuous PS version of the automatic production line. There are more than 120 companies. In the past five years, these companies have produced an average of more than 20 million square meters of recycled PS every year. The average annual savings are 15,000 tons of aluminum plates, which has blocked nearly RMB 400 million of aluminum. Imports save more than 200 million yuan in printing materials costs per year for printing companies.
At present, the recycled PS version has occupied a considerable market share in the field of color proofing, book printing, and packaging printing.
In color proofing, about 90% use a regenerated PS plate. In the high-end four-color printing field, many companies use recycled PS, but they have not yet reached scale.
For PS version aluminum base, it is not yet clear what the situation of aluminum mineral energy is, and the large amount of electricity consumed by electrolytic aluminum only aggravates the contradiction between energy supply and demand, which forces the country to restrict it through industrial policy guidance, or use price leverage to limit production. Therefore, the development of the PS version of the aluminum base will be adversely affected. In addition, the rolling capacity and technical level of the domestic PS version aluminum base will be insufficient, the rolling capacity can only meet one-third of the demand, and the domestic aluminum version The quality of the base and the quality of imported aluminum bases are greatly different. This gives foreign aluminum base manufacturers the opportunity to monopolize the prices of imported plates, and it also causes China’s PS version of the aluminum base to form a seller’s market, and the PS version of the production companies to buy. Aluminum plate base is very difficult, resulting in a serious inversion of supply and demand, and the price remains high. PS manufacturers have high costs and low profit levels. It can be said that the cost of aluminum-based materials “eats†a large part of the profits of the plate production companies.
From the aspects of energy conservation and cost reduction, we should vigorously develop the renewable PS version as the chief unit of the Professional Board for Recycling PS of the China Printing and Equipment Equipment Industry Association. We are involved in the technology, market, and manufacturing of many recycled PS manufacturers across the country. There are more exchanges in management and other aspects, and we have a lot of information. According to our statistics, at present, there are more than 200 individual PS plate production enterprises in the country. There are still dozens of companies that use manual trough equipment. Most of the companies have achieved technological upgrading through technological transformation and equipment replacement. The use of single-sheet continuous automatic method for plate production, these companies produced a new 10 million square meters in 2004, and a renewable PS version of 30 million square meters, which is an effective supplement to the PS industry, and has also eased the pressure of energy shortages in China.
Second, the status of renewable PS version technology
Flatness defect elimination
The vast majority of recycled PS editions currently circulated on the Chinese market are processed by single-sheet continuous production methods. Since 1997, Prairie has sold more than 200 reclaimed PS version levelers on the national market. This leveler can effectively eliminate horseshoe prints, creases, corrugated edges, snare packs, and concaves on recycled PS plates. Defects such as pits have effectively resolved the problems that have plagued the layout industry for many years. Previously, the issue of layout flatness was a “bottleneck†that affected the quality of recycled PS plates because the defects of the reprinted horseshoe prints, creases, and bulges had a greater impact on the quality of the printed matter, resulting in lost images and poor resolution. Ink and so on. The new generation of recycled PS version levelers has brought the level of reproduction PS version to be comparable to the new version, and the recycled PS version will no longer be rejected due to the flatness defect of the layout.
Automatic production improves plate quality
As mentioned above, the vast majority of the current recycled PS versions are processed using a single sheet continuous automatic production equipment. Compared with the previous manual trough method, the automatic production method has a strong controllability for the processing of the plates. , Process stability, high quality. The “sand remediation theory†that we promoted in the renewable PS industry is electrolyzed by continuous injection. The original sand of the regenerated version is repaired, the peaks and valleys are clear, the distribution is smooth and smooth, the water retention is strong, and the resistance to force and resolution are improved. Now. The continuity of the anodizing process makes the oxide film more fine and uniform. The electrochemical reaction produced by the original trough suspension method was poor in fluidity, uneven discharge of reaction gas, and the elimination of uneven spot and uneven oxide film defects. This kind of recycled PS version is no less inferior to the conventional PS version in terms of print water retention, ink receptivity, and resolution.
First, renewable PS version and energy