Roll coaters and roll coating machines
Precision for flat workpieces
At Venjakob, we develop roll coaters and roller application machines for the defined application of coat and adhesive systems to flat workpieces. The technology ensures controlled processes, efficient material utilisation and a particularly smooth, clean surface finish. Our roller systems are suitable for wood, furniture, plastics, glass and metals surfaces and offer reliable results even at high feed speeds.
Roll coating compared to other application methods
In contrast to spraying or pouring processes, roll coating produces clearly defined coating thicknesses without overspray. The direct transfer of media reduces consumption, stabilises film formation and ensures particularly economical processes in lines with flat workpieces.here you can directly compare different coating processes:
Roller coater
Structure and mode of operation
The roll coater forms the heart of every roll coater. The dosing and application rollers work together precisely: The metering roller feeds the medium in a controlled manner, while the application roller transfers it homogeneously onto the workpiece. The roller gap, speed, temperature and viscosity determine the coating thickness. Additional functions such as roller cleaning, material guidance and precise control ensure consistent process quality, even during long production runs.
Process parameters in roll coating
The quality of the roll coating is significantly influenced by precisely coordinated parameters. Line speed, roller gap, speed and viscosity have a direct effect on the transfer quantity and the surface appearance. By precisely controlling these factors, roll coaters and roll coating machines achieve high process reliability, stable film formation and consistent results over long running times.
We think Service 360° - holistically, across the entire life cycle of your system. From the initial consultation to long-term process optimisation, we support you with technical expertise, digital support and reliable worldwide service.
Our goal: Service 360° keeps your system productive, safe and future-proof - right from the start.
- Consultancy & fast response times: Analysis, optimisation and support - individually tailored to your production.
- Spare parts & remote support worldwide: Original parts, digital assistance and fast delivery safeguard your operations.
- Process optimisation & training: Further technical development, increased efficiency and practical training for your team.
What materials can the roll coaters be coated with?
Wood, furniture parts, panel materials, plastics, glass and flat metals surfaces.
What layer thicknesses are suitable for the roll coaters?
From ultra-thin films to higher application quantities - depending on the roller gap, medium and viscosity.
Which media can be processed with the roll coaters?
Coats, water and solvent-based systems, UV media, white glues, hot melts and technical adhesives.
How reproducible are the results with the roll coaters?
Adjustable process parameters ensure that results remain constant over long running times.
For which areas of application are roll coaters and roll coating machines suitable?
For decorative coatings, functional adhesive applications, laminating processes and the coating of flat wood, plastics, glass and metals workpieces.
How do roller hardness and surface structure influence the coating quality?
Roller hardness and surface structure determine how much medium is transferred and how evenly the film is produced. Harder rollers produce thin, very homogeneous layers; softer rollers enable higher application quantities. Smooth rollers are suitable for coats, textured rollers for viscous media or adhesives.
What role does temperature management play in roll coating?
Temperature controls the viscosity and therefore the transfer quantity. Stably tempered media ensure reproducible layer thicknesses and clean flow behaviour. Heated rollers or feed systems keep the process conditions constant.
We are happy to advise you
Would you like to find out more about our systems, processes or solutions - or do you already have a specific project in mind? Our contacts are on hand to provide you with expert advice, technical expertise and many years of experience.
Patrick Ade
Sales Engineer Wood & Building Materials
Telephone: +49 5242 9603 575E-mail: ed.bokajnev@eda.kcirtap
