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Book printing technology

Book printing technology
Book printing technology

EVA hot melt adhesive for book printing is a solid fusible polymer that does not require solvent or moisture. The hot melt adhesive is solid at normal temperature. When the hot melt adhesive is heated and melted to about 170 ° C, it becomes a liquid with good viscosity. When the temperature in the rubber pot rises above 250 ° C, the hot melt adhesive liquid begins to age. The glue that is discolored, deteriorated, has a reduced viscosity, and the film becomes brittle cannot be used.

China has not yet issued standards for hot melt adhesives for books and periodicals. The factory producing hot melt adhesives does not have a unified quality control system, and each factory has production standards for each plant. There are many types of hot melt adhesives, and the bonding properties are also different. According to the speed of different perfect binding machines, different objects of binding, opening time, curing time, etc., the adhesive and side glue are selected and selected.

From the book printing industry using EVA hot melt adhesive glue book, the time has been more than 10 years of history. The book has a short cycle, stable quality, low error rate and low labor intensity. Welcomed by the publishing industry and the printing industry. In particular, the popularization of PUR hot melt adhesives in foreign countries, PUR hot melt adhesives instead of the common EVA hot melt adhesives, the drawbacks of EVA hot melt adhesives are compensated by PUR hot melt adhesives. PUR hot melt adhesives are perfect. Binding method. However, in the printing industry, EVA hot melt adhesives are used in adhesive books, and 80% of the problems in the quality of printed matter are caused by improper use of EVA adhesive.

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