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Classification of composite packaging bag printing

According to the classification of printing forms, letterpress printing can be divided into magazines, books, covers, trademarks and packaging materials. Lithography. Plate printing is a printing method that uses PS plate, gravure plate, multi-layer metal plate, protein plate, stone plate, etc., and uses the principle of oil and water immiscibility. gravure. Gravure printing is a printing plate printing method using manual or mechanical engraving gravure, photogravure, electronic engraving, etc. It is direct printing. Orifice plate printing: Orifice plate printing is a method of printing by using a hollow plate screen printing plate. 2. Classification according to the color of printed materials: monochrome printing and multi-color printing 3. Classification according to the purpose of printed materials can be divided into books and periodicals, newspaper printing, advertising printing, banknote printing, banknote printing, map printing, packaging and decoration printing and special printing.

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