ELS Rotogravure Printing Machine
Electronically Synchronized Rotogravure Printing for Precise Multi-Colour Production
Our ELS Rotogravure Printing Machine is specifically designed to enable precision and consistency in multi-color printing of flexible packaging. The Electronic Line Shaft (ELS) technology electronically synchronizes the printing units, and thus the cylinder motion is electronically controlled without the aid of the traditional mechanical line shaft system.
Individually driven control system, automatic color registration system and web tension control are some of the ways in which stability in the process of printing is ensured. The machine may be customized for materials such as BOPP, PET, PE, CPP, PVC, laminated films, aluminum foil and other appropriate papers.
The ELS system is ideal for flexible packaging converters.
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Engineered with Electronic Line Shaft Technology
In traditional mechanically interconnected printing machines, synchronization of the printing stations is achieved using the mechanical transfer devices. In case of the ELS machine, electronic drive mechanisms control the printing stations in order to maintain the desired interaction between each printing cylinder and the running web.
The electronic synchronization ensures accurate control during acceleration, steady-state printing and deceleration. Together with automatic registration and web tension control, it allows for maintaining colour-to-colour registration during printing.
Independent electronic control makes it possible to achieve greater flexibility in the setup of different print jobs.
Precise Web Handling for Flexible Packaging Films
Film printing demands proper tension management due to the flexible nature of the film used. Too much or varying tension may cause stretching of the material.
The ELS Rotogravure Printing Machine integrates the processes of unwinding, guiding of the web, tension control, printing, drying and rewinding to ensure that there is proper handling of the substrate throughout the process.
This machine can be tailored to suit the following types of materials: BOPP, PET/polyester, PE, CPP, PVC, laminate, aluminium and paper.
Built for Accurate Multi-Colour Registration
Every colour in rotogravure printing is applied at a separate printing station. Accurate synchronization between these stations is therefore essential for reproducing detailed graphics, fine text and multi-colour packaging designs.
The ELS drive system works together with automatic registration controls to correct and maintain the relative position of successive colours. Individual printing stations can be electronically coordinated, helping maintain consistent registration during continuous operation.
Controlled impression, ink circulation, doctor blade operation and inter-station drying further contribute to repeatable print reproduction.
Efficient Inter-Station Drying
After each colour is printed, the web passes through a drying section before reaching the next printing unit. Controlled hot-air circulation helps remove the required solvent or moisture from the printed surface.
Drying temperature and airflow can be controlled according to substrate, ink and operating conditions. Effective inter-colour drying helps prevent smearing and supports cleaner printing at subsequent stations.
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Technical Specifications
|
Category |
Specification |
|---|---|
|
Machine Type |
ELS Rotogravure Printing Machine |
|
Printing Technology |
Rotogravure Printing |
|
Colour Configuration |
8 / 10 / 12 Colours |
|
Maximum Printing Speed |
Up to 250 M/Min |
|
Web Width |
800 / 1000 / 1200 / 1300 mm |
|
Printing Cylinder System |
Interchangeable Gravure Printing Cylinders |
|
Printing Cylinder Diameter |
120 – 300 mm |
|
Drive System |
Synchronized / Individual Drive Configuration |
|
Registration Accuracy |
Up to ±0.1 mm |
|
Registration Control |
Automatic Colour Registration Control |
|
Unwinding System |
Automatic / Controlled Roll Unwinding |
|
Rewinding System |
Automatic Controlled Rewinding |
|
Core Diameter |
76 mm (3 Inch) |
|
Web Guide System |
Automatic Edge / Web Guiding |
|
Doctor Blade System |
Pneumatic Doctor Blade System |
|
Drying System |
Individual Hot-Air Drying System for Each Printing Station |
|
Corona Treatment |
Corona Treatment Unit |
|
Web Inspection |
Online Video Web Inspection |
Packaging Applications
- Foil & Paper Applications: Appropriate machine configurations can also process compatible aluminium foil and paper substrates.
- Household Product Packaging: Supports printed flexible packaging for detergents, cleaners and related consumer products.
- Personal Care Packaging: Suitable for selected cosmetic, hygiene and personal-care flexible packaging.
- Pouch Packaging: Printed web can be converted into centre-seal, three-side-seal, stand-up and other compatible pouch formats.
- Laminated Packaging: Suitable for printing films that subsequently undergo lamination to produce multilayer packaging structures.
- Food Packaging: Used for printed packaging material for snacks, confectionery, biscuits, spices, dry foods and other packaged products.
- Flexible Packaging Films: Suitable for printing flexible films used for pouches, bags, wrappers and roll-stock packaging.
Key Features
- Continuous Ink Circulation: Maintains continuous ink supply and circulation at individual printing stations.
- Pneumatic Doctor Blade System: Removes excess ink from the gravure cylinder surface for controlled and consistent ink transfer.
- Multi-Colour Printing Configuration: Available with multiple printing stations according to the required packaging design and production application.
- Automatic Web Tension Control: Maintains controlled tension as the substrate moves from unwinding through printing to rewinding.
- Automatic Colour Registration: Registration controls continuously help maintain correct alignment between successive printed colours.
- Individual Drive Control: Printing units can be electronically driven and synchronized rather than relying solely on a common mechanical transmission.
- Electronic Line Shaft (ELS) Technology: Electronic synchronization coordinates individual printing stations for precise multi-colour operation.
Frequently Asked Questions
After the final printing and drying station, the material is rewound into a finished roll. It can then proceed to lamination, slitting, pouch making or other converting processes.
Yes. It is designed for roll-to-roll printing applications used in flexible packaging, including printed films for pouches, wrappers, laminates and other packaging structures.
Electronic synchronization works together with automatic registration and web tension controls to maintain the required relationship between the moving substrate and individual printing cylinders.
Yes. ELS rotogravure machines can be configured with multiple printing stations, including 8, 10 and 12-colour configurations, depending on production requirements.
Depending on the machine configuration, suitable materials include BOPP, PET, PE, CPP, PVC, laminated films, aluminium foil and paper.
The electronic drive arrangement provides precise synchronization between printing stations and allows individual units to be controlled electronically. This supports accurate registration, flexible machine control and consistent multi-colour production.
ELS stands for Electronic Line Shaft. Instead of depending only on a conventional mechanical line shaft to synchronize printing units, electronic drive controls coordinate the movement of individual stations.
An ELS Rotogravure Printing Machine uses an Electronic Line Shaft system to electronically synchronize the printing stations. The system coordinates individual drives to maintain accurate cylinder movement and colour registration during multi-colour printing.
