Application of Electromagnetic Induction Heating Roller in Film Covering Machine
作者：管理员 时间：2020-06-04 08:51 来源：未知
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Application of Electromagnetic Induction Heating Roller in Film Covering Machine--Energy Saving, Environmental Protection, High Uniformity
Film coating process is widely used in all kinds of packaging and decoration printing products in China. Books, books, calendars and maps in various binding forms are popular surface processing technology for printing products. The wear resistance, flexural resistance, tensile resistance and moisture resistance of the coated printed materials have been greatly enhanced. The technology of coating is divided into coating and pre-coating, and the application of pre-coating without glue and solvent is the development trend of safe and environmentally friendly packaging products. The pre-coating machine is mainly composed of printing input part, hot-pressing compound part, transmission system and computer control system. The traditional hot-pressing summer-closing rolls of Film-covering machines are heated by heat conducting oil, which has many disadvantages: after long working hours, the heat conducting oil will produce carbon deposit structure in contact with air and adhere to the roll body, resulting in fluctuating temperature difference of roll surface due to different wall thickness, which greatly affects the uniformity of film-covering; the heat dissipation is large, the heat conversion efficiency is low, and therefore the energy consumption is high; Oil spill and other problems cause potential safety hazards.
The electromagnetic heating roll is a heating roll based on the principle of electromagnetic induction heating metal. Compared with traditional heat conducting oil heating roll and electric heating roll, electromagnetic heating roll has the advantages of high temperature, good temperature uniformity, easy maintenance, low energy consumption and no pollution. Electromagnetic heating roller can be used in calendering and setting of various kinds of tabula, surface calendering of textiles, foaming materials, hot pressing composite of film and various substrates, drying and stretching of special paper and hot embossing of anti-counterfeiting laser materials. It has good effects on improving product quality, reducing energy consumption and improving production environment.
Japan's electromagnetic heating roll manufacturing technology began to develop in the 1960s, and by 2012, its research and development, manufacturing technology has been relatively mature, and is in the leading position in the world. Because the manufacturing of electromagnetic heating rollers involves the professional knowledge of materials, chemical industry, machinery, automatic control, electronics and other disciplines, it is very difficult to manufacture, so after decades of development, this technology is still only mastered by a few enterprises. The application of electromagnetic heating rollers in domestic high-end industries used to be mainly Japanese products, which were expensive and inconvenient to maintain, resulting in high production costs. At the beginning of the 21st century, some domestic enterprises began to develop electromagnetic heating roll technology. After ten years of development, some enterprises in Zhuzhou have successfully mastered the core technology of electromagnetic heating roll independently developed and successfully applied in the commercial field.
