Anti-counterfeiting printing application techniques in packaging and decoration

1. The range of commonly used materials for flexible packaging is: pp/opp/bopp: 18-60μ, pet: 10-30μ, cpa: 20-60μ, bopa: 12-20v; aluminum foil: 18-40μ, paper: 40-120g/sq. Meters; composite materials: generally not more than 120 g/m2. The minimum thickness of the printed film of a flexible package gravure press can reach 7-9μ.

2. The width of printing materials is most commonly 1000-1300mm. Foreign countries have recently produced a flexible packaging gravure printer with a width of 1700mm.

3. In the past few years, the most commonly used 8-10 units for gravure printing machines on the international market. As the use of spot colors in packaging is becoming more and more common, the number of color sets for gravure printers has increased in recent years. If using wire coating and compounding, the unit may be more.

4, printing graphics and text repeat length (printing drum circumference) is generally 420-920mm internationally, and even the maximum length of text and graphics may reach 1100mm, domestic manufacturers often use 408-942mm (ie plate diameter of φ130-300mm ).

5. The maximum roll diameter of a gravure-pack gravure press is generally 800-1000mm, and 600mm is also commonly used on medium and low-speed machines. In a continuous compound gravure press, the diameter of the take-up diameter increases correspondingly to the diameter of the take-off roll, but generally it does not exceed 1270 mm (50"). The diameter of the feed roll spindle is generally 76 mm (3"), but it may also be in the winding section. A 152mm (6") mandrel was used.

6. The highest production speed of domestically produced flexible packaging gravure printing presses is currently between 60-200 m/min. Most foreign machines are 150-300 m/min and the maximum has reached 450 m/min.

7, common width of the gravure printing machine, the tension range is mostly within 3-30 kilograms, such as printing thin paper can also reach 4-40 kg or 4-50 kg and so on.

8. Edge processing method: The most commonly used connection processing of flexible packaging gravure printing machine is compound (including dry method, wet method and solvent-free compounding), coating (including ordinary coating, hot sol and cold sealing), and other methods can also be used. Edge processing method.

9, overprinting and processing accuracy: "color one color" overprint accuracy is generally up to ± 0.1mm, but for some stretchable material can only reach 0.25mm.

10. Dry heat source: Several common heat sources (steam, electricity, hot oil, and natural gas) can be used.

11, electrical standards, safety standards and maximum noise standards: the same as other gravure printing machine.