Method for printing cigarette packet snowflake patterns by using improved intaglio printing press

Abstract

The invention provides a method for printing cigarette packet snowflake patterns by using an improved intaglio printing press and relates to the improvement of a single-color intaglio printing press. A UV (ultraviolet) line forming lamp tube is arranged in front of a tooth row between paper delivery chains of the intaglio printing press, the distance between the UV line forming lamp tube and paper is between 12cm and 15cm, a group of UV optical curing lamp tubes are arranged 1.5-1.8m ahead of the UV line forming lamp tube, an air pump is arranged between a line forming lamp tube and optical curing lamp tubes and a paper guide tray is arranged on paper supporting steel bars between the paper delivery chains. The method comprises the following steps of: making an intaglio by using a '60 line 55u' laser engraving process; performing UV snowflake ink printing; detonating ink under the irradiation of the line forming lamp to form fine and smooth creases; and performing high-power drying and curing by using a group of high-temperature UV optical curing lamp tubes; printing cigarette packet snowflake patterns with an outstanding effect at the speed of 4100-4300 pieces of paper per hour by using the improved intaglio printing press. The method provided by the invention is simple, the cost of the application of the improved intaglio printing press for printing is low and the printing speed is higher than twice that of a screen printing machine.

Description

technical field [0001] The invention relates to a method for printing snowflake patterns on cigarette packs by an improved gravure printing machine. Background technique [0002] With the continuous development of printing technology and consumers' higher and higher aesthetic requirements for packaging, the grade requirements for various promotional printed materials and packaging products are getting higher and higher. Because screen printing can express various special ink effects, the decorative graphics of packaging products have been developed by leaps and bounds in recent years. Among them, the silk screen snowflake (freezing point) effect is a good example. [0003] The snowflake effect of silk screen printing is a kind of fine sandy feeling and hand feeling formed on the surface of the printed product after ink silk screen printing on gold cardboard, silver cardboard, laser cardboard, PVC and other substrates is wrinkled by ultraviolet light and cured by UV light. ...

AI Technical Summary

Problems solved by technology

[0006] 1. The printing quality will be affected by many factors, such as screen mesh, stretching angle, printing pressure, squeegee angle, etc. If these factors are not well controlled, it will inevitably affect the quality of the final product

[0007] 2. The printing efficiency is low, and the screen printing speed is generally 2300-3000 sheets / hour, which is far behind the gravure printing speed

[0008] 3. The screen frame of the screen is easily deformed during the printing process, and there is instability in the overprinting. If the screen is broken or deformed, it will have a great impact on the printing quality and efficiency

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