Edge coating technologies: all the solutions

Many companies need to carry out edge coating: how many ways are there to coat or seal an edge? Let's review together which technologies can make this process easier and faster, so that manufacturers can achieve the best results.

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Edge coating

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What is an edge coating system?

Edge finishing is carried out with special equipment able to perform several actions:

  • coating 
  • filling
  • sanding
Today, we have a number of edge coating solutions available, depending on products, materials, shapes and edge finishing methods. The technologies for edge coating range from spray coating to roller coating, vacuum coating and even digital printing.



Edge coating: advantages

Edge coating can respond to several needs, on a case by case basis:

  • Improve the appearance of the workpiece.
  • Deliver a personalised finish in terms of colour and texture.
  • Coated edges enhance product quality, increasing product value.
  • Coated edges ensure greater resistance and water tightness, for example if the surface is exposed to steam or water.
Verniciatura bordi

Finishing line for panel stacks

Painting 'stacked edges' is still very much in demand on the market, many high and low-productivity lines need such a solution to complete the painting process.

Usually developed for water- and solvent-based products, the line allows the complete painting process to be handled fully automatically by anthropomorphic robots, thus reducing all manual steps.

The certainty of iGiotto's repeatability allows full control over productivity, the quantity of paint applied and the resulting quality of the final product.

Edge finishing technology applications

The edge finishing techniques involve various materials and sectors, including:


Application fields

Below are some furniture industry-specific application areas and finished products


Edge coating technologies

Depending on the product and the material, different technologies can be used to finish and coat edges. Let's start from the quintessential edge coating technology: by combining exclusive features and patented devices, we have become industry leaders in this field.

The edges of panels can also be coated by a Cartesian spraying robot such as iBotic, equipped with guns with movement about 5 axes, programmed to coat the edge of a panel fed through the spray coating area in "tracking" mode. 
iBotic is a high output solution that guarantees both an excellent finish quality and a superior level of flexibility.

Generally speaking, roller coaters only coat flat surfaces. However, rounded edges can also be effectively processed provided the equipment includes a soft roller. 
Edges (straight or with small radii) can therefore be coated by also using roller coating technologies. Our patented soft vertical roller automatically adapts to the shape of the edge without needing any extra equipment.

Another commonly used technology, vacuum coating is probably the most widespread method, not only to coat but also to seal edges, protecting them from humidity. 
Our vacuum edge coating solutions include Talent, a patented vacuum system to seal parquet floors. The following products are compatible: water-based lacquers, UV curing water-based products, UV-100%, sealants (wax, paraffin, glue).

Specially developed to handle foils with thicknesses ranging from 0.1 to 2 mm and a printing width of up to 500 mm (19.7”), our industrial digital printing solutions also respond to some edge coating needs. 
These are specific and customized solutions that should be evaluated together to identify the best one to meet flexibility, productivity and quality goals. For this reason, we are available to discuss with you how industrial digital printing can help you respond to edge finishing requirements.

We have chosen to combine coating and filling with sanding of flat and raised panel edges to offer a one-stop solution, providing a cost-effective, top-quality alternative to manual processing. Our Smartedge allows the edges of MDF, veneered and solid wood panels to be filled, sanded and coated with a single roller coating system, or using a patented "vacuum" injection technology.
We are well aware that edge processing affects the entire panel coating process and should therefore be considered critically important. Efficiency for large-scale production, flexibility for just-in-time jobs and consistently high quality are three top priorities in the panel finishing process.

Focus On

Roll-to-roll digital printing line

One way of achieving maximum personalisation and minimum waste is with industrial digital printing technologies. Complete lines using reels, with or without a digital white base, that are fed into and through a JP Single-Pass Roll-to-Roll digital printer enhance productivity and allow manufacturers to customise their products with decorated PVC applied to panel edges.

An eco-friendly technique, the digital printing process can be completed with roller coaters and curing ovens. Our machines also include innovative features such as the web-control device, the humpback design, and are easily cleaned and maintained as you will see in the video, which illustrates a typical edge-coating line implementing a digital printer.

Discover our edge coating machines


Case studies

Case study


Do you know how to work around bottlenecks and other edge processing and coating issues?

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Are you looking for the ideal solution for your coating line?

We are ready to make our know-how available to you to explore together the potential of Cefla coating technologies in your industry.

All you have to do is fill out the form and contact us to obtain support from our experts.


Frequently Asked Questions

Frequently Asked Questions

01 What's needed to coat edges?
To coat edges you need a specific machine that coats, putties and sands the product edges. That's why we've designed and developed Smartedge, a machine for coating, puttying and sanding edges. It can be configured to suit the customer's specific needs, edge shape, product type and the required productivity.
02 What are the advantages of edge coating compared to a lining?
Coated edges become an integral part of the panel, ensuring insulation against steam and water after total coating with sprayers. In general, coated panels are of higher quality than lined panels.
03 What technology do I need to coat edges?
To coat edges correctly, vacuum and roller technologies are required. It all depends on the shape of the edge and the product type, which might be MDF, veneered, reconstituted veneered or wood.
04 What's the most suitable edge coating solution?
For quality coating of straight edges with radii and shaped edges, vacuum technology is needed. If, however, edges are straight with small radii, roller technology will be more suitable.
05 I have edges of varying thickness; is there a machine that can work with all of them?
The standard edge coating machine designed by Cefla Finishing can process panels that are between 5 and 60 mm thick.
06 Can coating consumption be controlled during edge coating?
Coating consumption can now be controlled manually.
07 I have a very flexible production set-up. How much time do I lose setting up the machine for production changeovers?
Where there is a specific need for high flexibility, the configuration of the machine (i.e. the number of application and sanding units) determines the machine-set-up time, which can vary from 10 to 30 minutes.
08 Is an edge coating machine very maintenance-intensive?
On a coating machine, routine maintenance involves monthly tasks such as conveyor cleaning, lubrication of ball bearing pads and all metal parts with horizontal and vertical movement.
09 Can I easily manage programming of my workpieces on edge coating machines?
Thanks to a PLC with 100 programs, Smartedge can keep tabs on production data (number of pieces machined, number of metres, number of hours worked) and belt sander/wheel inputs-outputs, tool speed and conveyor systems.