1. The range of commonly used materials for flexible packaging are: PP / OPP / BOPP: 18-60μ, PET: 10-30μ, CPA: 20-60μ, BOPA: 12-20V; aluminum foil: 18-40μ, paper: 40-120 g / square M; composite material: generally no more than 120 g / m2. The minimum thickness of the film printed by the flexible packaging gravure printing machine can reach 7-9μ.
2. The width of the printing material is most commonly 1000-1300mm. Foreign countries have recently produced flexible packaging gravure printing machines with a width of 1700mm.
3. In recent years, the most commonly used 8-10 units of flexible packaging gravure printing machines on the international market. As spot colors are becoming more and more common in packaging, the number of color sets in gravure printing machines has increased in recent years. If wire coating and compounding are used, there may be more units.
4. The repetition length of printed graphics (ie the circumference of the plate cylinder) is generally 420-920mm internationally, and even the maximum repetition length of graphics and text may reach 1100mm. Domestic manufacturers often use 408-942mm (ie the diameter of the plate cylinder is Φ130-300mm ).
5. The maximum roll diameter of flexible packaging gravure printing machine is generally 800-1000mm, and 600mm is also commonly used on low and medium speed machines. In the continuous compound gravure printing machine, the winding diameter is correspondingly larger than the unwinding diameter, but generally does not exceed 1270mm (50 "), and the diameter of the material mandrel is generally 76mm (3"), but it may also be in the winding part. Use 152mm (6 ") mandrel.
6. The maximum production speed of the domestic flexible packaging gravure printing machine is currently between 60-200 meters / minute, most of the foreign machines are 150-300 meters / minute, and the highest can reach more than 450 meters / minute.
7. The common width of gravure printing machine, the tension range is mostly within 3-30 kg, such as printing thin paper at the same time can also reach 4-40 kg or 4-50 kg.
8. Edge processing method: the most commonly used inline processing of flexible packaging gravure printing machine is compound (including dry method, wet method and solvent-free compound), coating (including ordinary coating, hot sol, cold sealing), and other methods can also be used. Edge processing method.
9. Overprinting and processing accuracy: "color one color" overprinting accuracy is generally up to ± 0.1mm, but for some stretchable materials it can only reach 0.25mm.
10. Dry heat source: Several common heat sources (steam, electricity, hot oil, natural gas) can be used.
11. Electrical standards, safety standards and maximum noise standards: the same as other gravure printing machines.
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