FLEXOGRAPHIC solutions

Flexo presses deliver a good quality printing on a large number of substrates and at high speeds.The printing forms are cheaper than rotogravure but more expensive than offset plates (especially with HD flexo).

Rotogravure presses allow a greater stability in the printing quality and offset presses achieve better results with lower quality cartonboards. The printing process will therefore be chosen according to multiple parameters.

Using flexo units on an offset line or on a rotogravure line as auxiliary units is a relevant choice for coating applications or reverse printing (for instance couponing). This hybrid configuration grants a great versatility, all the more since the make-ready of the flexo units is made very easily thanks to the sleeve-type cylinders.

Main Applications

Komori-Chambon expertise

Hybrid configurations

The Komori-Chambon know-how is obvious in its ability to integrate various printing processes in one production line.
Take the best profit out of each solution.
Flexibility

The flexo units are configured according to the ink types and related drying devices.
The whole production flow is 100% under control.
Agility

Independent servomotor-driven shafts allow precise and safe operations.
Safety

The system is protected from wrap-arounds by sensors, web break detector, torque control and reversible clutch parts.

personal consultation here

Production flow insights

The design to print is split by color and transfered onto flexible printing plates
The initial printing costs in flexo are low when conventional plates are used (rubber)
HD flexo plates (photopolymers) come at a higher price but deliver a higher printing quality.

Automatic circumferential and lateral registration
Automatic on/off from main desk of anilox roll and impression cylinder
Heater temperature controlled with pre-setting (air temperature).

The inking system includes: Chambered Doctor Blade System, Coating circulation and automated cleaning, Automatic internal functions
The driving and pressure adjustment of the printing cylinder and of the anilox cylinder are motorized as well as the side register setting
Ink circulation is controlled thanks to a viscosity and level regulation.

Depending on the ink type, water-based or solvent-based, the flexo unit in configured either for air drying or for UV or EB drying.
The web path is either vertical or horizontal.

Coating and reverse printing can be performed with the flexo units
Offset and rotogravure units can be combined depending on the job constraints

Job changes are easy to operate thanks to the ink washing sequence, the lightweight sleeve design and the semi-auto bearing parking sequence

Printing unit versions

Vertical web path

Hot air dryers used for water-based or solvent based inks are mounted on top of the flexo units. The web follows a vertical path all along the drying nozzles then comes down before going through the rotary die-cutter or the rewinder.

Backside printing is managed with the vertical type flexo units, as well as water-based coating.

Horizontal web path

UV drying or EB curing is realized horizontally. The web path is straight, from the unwinder to the delivery stacker or the rewinder in a roll-to-roll configuration.

Coating applications right after offset units are dealt with thanks to the horizontal type units before final dryer.