Detailed Explanation of the Structure and Application of Flexographic Printing Press

Green packaging policies drive the popularization of water-based printing. The processing of food and medical packaging faces challenges including diversified substrates, time-consuming plate change and unstable overprint registration. Wenzhou Fengming Machinery launches multiple series of Flexographic Printing Machine. Adopting a modular servo structure, the machines adapt to printing of various rolled materials. The following analysis covers equipment definition, structure, models and comprehensive value.

I. Basic Equipment Definition

The Flexographic Printing Machine is a roll-fed continuous printing equipment equipped with flexible printing plates, compatible with water-based / UV inks. It can form an integrated production line matched with auxiliary coating and wax-coating units. Models are divided into six categories: sleeve type, flat push type, petal type, in-line type, stack type and medical frame coating type. It can process substrates such as paper (30–400 gsm), film and non-woven fabrics.

II. Core Modular Structure

Unwinding, Rewinding & Tension Unit: Standard equipped with 1524mm paper roll shaft, closed-loop tension system adjustable within ±0.5kg. Partial models adopt turret non-stop roll change to guarantee stable web tension during acceleration and deceleration.

Servo Printing Unit: Sleeve-type plate cylinders allow easy assembly and disassembly; petal and in-line models support independent addition or removal of color groups. The full series adopts shaftless servo transmission without pitch limitation on printing repeat length, built-in pre-registration function. The overprint error is ≤0.12mm within the speed range of 10–180 m/min.

Drying & Ink Unit: Three drying modes (hot air, infrared, UV) are applicable to two types of inks. Medical models are further equipped with zoned air ducts and automatic glue concentration control components to realize synchronous printing and back coating.

Electric Control & Inspection Unit: The touch panel stores multiple sets of production parameters and is fitted with an online overprint inspection system. Optional linkage modules including dust removal, die-cutting and plastic-free coating are available.

III. Application Scenarios of Different Models

Sleeve type & flat push type: Suitable for multi-specification paper bags and gift packaging with high plate change efficiency;

Wide-width petal type: Maximum speed up to 260 m/min, for mass pre-printing of cartons and milk packaging rolls;

In-line type & stack type: Compact body, applicable to paper cups, small food packaging and pharmaceutical packaging;

Medical frame coating type: Specially designed for medical glove and mask packaging, integrating printing and glue coating.

The complete line can be matched with wax coating and plastic-free coating equipment, covering full categories of food packaging, medical packaging and gift boxes.

IV. Comprehensive Equipment Advantages

The Flexographic Printing Machine adapts to various rolled raw materials, and a single machine can handle diversified orders. Servo pre-registration and quick-change components reduce material consumption during machine setup. Wide-width and compact models fit different factory layouts. The equipment owns more than 20 patents, and the thickened frame ensures long-term continuous production. Drying and back-coating functions can be configured on demand.

V. Conclusion

Demand for eco-friendly packaging keeps growing. Featuring replaceable printing modules, the Flexographic Printing Machine meets both mass production and flexible small-batch orders, providing food and medical packaging manufacturers with complete printing and processing solutions。