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28 - 30 September 2021 // Nuremberg, Germany

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Exhibitors & Products FACHPACK 2019
Zoom Image LOGO_FLEXO PRINTING DECK

FLEXO PRINTING DECK

LOGO_FLEXO PRINTING DECK

FLEXO PRINTING DECK

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8C – 8 color

8-color robust cast iron framework with 8 printing decks.

The massive cast iron framework ensures that vibration is minimized and as a closed unit it guarantees stability and protection for the 8 built-in flexographic printing decks. In addition, robust spacers join the two sides.

CI – Central Impression Cylinder

The central impression cylinder is the prerequisite for top quality printing.

Double-wall, tempered, 1800 mm diameter stainless steel cylinder with 0,005 mm accuracy ensures that the substrate will not stretch (deform) during the printing process. Precise cylinder rotation is ensured by self-setting bearing with cylindrical roller. The bearing does not require maintenance. The tempering unit is part of the basic configuration.

GS – Gearless servo

Gearless and servo driven printing form and anilox sleeves.

The built-in air cylinders of the form and anilox sleeves are servo driven, thus any print length can be set without the 5 or 10 mm limitation. The girth of the plate mounted onto the form sleeve is saved in the system and the servo inverters automatically set into the required position due to high-accuracy feedback. Resonance of the traditional cog wheel machines are eliminated, thus streaks in the print, caused by resonance, are diminished.

SC – Sleeve system

Side shift mechanism anilox and form sleeves.

Specifically required sleeves are placed on the fixed built-in air-cylinders in the Flexographic press and their exchange can be done from the operator’s side of the printing deck after the quick release of the bearing block assembly. Therefore, changeover time is greatly reduced. The total print length range is most economically attainable by two adapter sleeves. The exchange of the form and anilox sleeve is aided by two specifically designed carts which are standard equipment. They reduce the likelihood of damage and ensure safe storage of the form and anilox sleeves. Plastic protective cover is an optional accessory for the anilox sleeve, which should be used during sleeve exchange in order to protect the anilox sleeve mantle from damages. The compact easy-to-use sleeve rack also safeguards the sleeves of the printing press.

CNC – Motorized printing deck actuation

PLC controlled, servo driven actuation of the printing decks and of the length register.

Each printing deck is actuated by 4 servo engines moving precision screws and carriages. Accuracy of the positioning is to 0,001 mm, with zero backlash. Machine operators can set the compressive force and the servo driven cross and the 360° length registers on two portable and two color touch screen terminals. These values along with many other important parameters are saved with the recipe program, which ensures that work data for recurring jobs is stored.

DB – Doctor Blade Chamber

Doctor blade chamber and paint application.

The blade chamber is one of the most important units of the paint application technology. It is precision-machined cast aluminum with Teflon surface. We fixed blades on the top and bottom of the cast and standard size felt end-seals on the sides. The equipped Doctor Chamber is simultaneously pressed against the anilox sleeve by adjustable pneumatic pressure, resulting in a closed chamber. The inlet and outlet hoses are fastened to the backside of the pump and the ink box by quick connectors. Ink is circulated via burst proof pump to the chamber from a stainless steel toner box, situated on two support carts, which are included in the base price. The blade pressed against the anilox sleeve ensures that excess ink is removed, thus the quantity of the applied ink can be controlled by the size of the cells on the anilox cylinders. In order to increase or decrease the quantity of the ink, the anilox sleeve needs to be changed to another size. Ink recirculated through the stainless steel ink box is filtered for metal particles by a magnet. Easy cleaning, low weight, fast and simple maintenance was the primary objective during the design phase. Assembly and storage of the Doctor Blade Chamber, and Doctor Blade cutting, is aided by a specifically designed cart which is standard equipment. Viscosity control, automatic inking system washer, stainless steel anilox sleeve, and the Doctor Blade Chamber washer cart are available options.

APS – Automatic Print Setting

Automatic print setting within 20 m.

The automatic print setting system is a software solution that sets compressive force and length registers on all 8 printing decks simultaneously within 20 meters. As a result, we will receive a print which the machine operator needs to only fine-tune to achieve a perfect print. Human factor will always play a vital role in precision settings on any system, therefore, the machine operator’s role will always remain vital. The amount of rejective print and changeover time is greatly reduced by this system. The system is included in the basic accessories.

VDS – Vibration damping system

Vibration damping system in each printing deck.

Plate engagement and disengagement during print cycle causes vibration which needs to be absorbed in order to neutralize resonance streaks, so all printing decks are equipped with an anti-vibration system.

For detailed information: https://vargaflexo.hu/en/flexo-press

FACHPACK offers concrete solutions for packaging-intensive industries. Industry guide



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