In the process of digital printing post-press processing, due to digital printing quality has the characteristics of different from traditional printing printing quality, there are many place need to be aware of. Here are three important experience, for your reference.
Experience 1: a unfavorable effect immediately after printing
Technology introduction: is the plastic mulch in print form a unity of paper-plastic print. In the print surface covering a layer of transparent plastic film, can strengthen the printing surface brightness, wear-resisting, waterproof, heat protection, anti-pollution, etc.
Problem description: after digital printing printing quality on the effect of print will be sparkling phenomenon, this is because digital printing ink layer containing silicone oil, usually glue can't normal penetration ink layer.
Solution: adjust the parts in the process of digital printing production process, as far as possible let print placement after printing effect for a period of time.
Experience 2: die-cutting, indentation emphasizes precise
Process description: the specific use of paper or cardboard according to certain specifications, with a knife cut into certain shape process method for die-cutting; Using steel wire according to certain specifications, in paper or cardboard pressure marks, in order to take advantage of the imprint the paper or paperboard bending, this method is called creasing.
Problem description: at present such as packaging products personalized, small batch, variable demand, part also USES digital printing printing packaging products. Bending of packaging products, combining site need to die-cutting, indentation process implementation. Die-cutting, indentation common wrong size, finished product skewed or overlapping shape is beautiful most of problems related to the size is not accurate.
Solution: typesetting size calculation, etc are strictly according to customer processing requirements, and make samples for measurement, review, in order to avoid because of error affect the use, and cause larger loss.
Experience 3: hot melt adhesive temperature control good
Process description: gum is to put the printed paper, including illustrations, cover, etc., according to the different size specifications book 1, after pressing and gluing, cutting and a series of process, finally make it into a book. Simple process, mature technology, low cost, high binding efficiency.
Problem description: binding quality fit and unfit quality directly related to the quality and appearance of the books and periodicals, the temperature is too high, easy to aging, rubber doesn't work; Temperature is too low, appeared the phenomenon such as glue, paper.
Solution: use hot melt adhesive glue order, before production will hot melt adhesive heated to a certain temperature, general control between 150 ~ 200 ℃, the best temperature in 170 ~ 180 ℃ and to keep the temperature stable.
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