Classify printing methods according to the purpose of printed matter

Classified according to the purpose of printed matter, such as book printing, newspaper printing, advertisement printing, banknote printing, map printing, stationery printing, packaging printing, special printing, etc. (1) Books and magazines printing, using letterpress printing in the past. Gradually switch to lithography. (2) News printing, in the past, used letterpress wheel to transfer printing, because …

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How important is the easy-tear of packaging bag ?

The application of plastic bags in food packaging has been very popular, it is not only light, waterproof and moistureproof, and the price is also reasonable, especially the laminated plastic flexible packaging process production is environmentally friendly, so the plastic bag is one of the most commonly used packaging materials. But in daily life, when …

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