All there is to know about vacuum coating solutions

Vacuum coating is an application technique that boasts extremely high transfer efficiency, almost 100%. This means perfect control over lacquer consumption, little or no waste, excellent quality at relatively low costs. Once used exclusively on edges, vacuum coating solutions now exist for flat panels such as cabinet doors or bathroom furniture.

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How does vacuum coating work?

Vacuum coating is a sustainable alternative to other coating techniques because it employs a 100% solid UV product, which is also more stable than polyurethane o polyester-based lacquers over time. It avoids contact between the application head and the substrate for clean, single-pass processing of 100% UV acrylic paint. Depositing up to 140 g/sqm this technique also helps reduce the number of coating stages when applying a basecoat, thereby saving workshop floorspace and improving lead times as well as limiting the number of handling operations needed.


The benefits of vacuum coating technologies

Further to the superior transfer efficiency offered by this technology, there are more specific advantages according to what the goal is. For example, panels with rounded edges can be coated using vacuum coating equipment, both for the surface and the edge. Moreover, the sanding process can be fully integrated into the edge coating machine or the line as a whole.
We have pioneered vacuum coating as an application technique because it ensures a significant number of benefits:

Using a solid UV lacquer, vacuum coating delivers a ec-friendly, longer-lasting, high-quality finish.

Superb transfer efficiency reduces costs, shortens lead times and boosts production output.

Same technique for both leads to a perfect match and the absence of an ugly junction seam.

Depositing large lacquer quantities in a single pass and integrating sanding capabilities reduces coating stages and handling operations.

Where can vacuum coating technologies be used?

Vacuum coating is a valid alternative in the following industries and for the following substrate materials:



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Some specific application areas and products finished with vacuum coating


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The vacuum coating process

Vacuum coating applies lacquer or a sealing agent in a single pass without the application head having any contact with the substrate (flat surface or edge). Transfer efficiency is almost 100%. Until recently, this technology was used for edges, coating, sealing or even waterproofing. Today, vacuum application solutions are a valid alternative for flat panels as well as edges.

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Frequently Asked Questions

Frequently Asked Questions

01 Which substrate materials are suitable for vacuum coating?
Vacuum coating is suitable for wood and its derivatives, metal, plasterboard, composite materials and PVC profiles.
02 This technology is perfect for the coating of…?
This technology is ideal when coating lineal profiles in high volumes, achieving high levels of production efficiency.
03 What are the advantages of vacuum coating?
This technology has many benefits. To start with, transfer efficiency reaches an astonishing 99%. Vacuum coaters have a limited footprint, so they occupy little factory space. Production efficiency is optimised because by using a vacuum coater, 360° sanding, coating and curing of a profile is dealt with in a single pass. Overspray is absent and the process is environmentally friendly. Coating thicknesses are high and, for example, can reach 700 µm on glass wool panels.
04 How can I measure coating quality?
This is an aspect that can primarily be evaluated subjectively. However, where rigidity is a required characteristic of the coated object, this technology enables high coating layer thicknesses (e.g. 700 g/m2 in the case of ceiling tiles) by using paints with 80% solids, leading to further benefits in terms of reduced drying costs. Constant coating thickness is also a key quality achieved with vacuum coating techniques, even in the case of complex profiles.
05 What are the size limitations for pieces that will be vacuum coated?
The minimum length is 915 mm (36”) and the maximum width is 305 mm (12”). Any size between these two limits is possible.
06 How long does it take to clean a vacuum machine?

Cleaning times vary according to the size of the machine and the type of paint being used. Water-based paints require less time than viscous UV lacquers. On average, when changing profiles, it will take between 10 and 15 minutes. If you are also required to change colour, this will take up to 30 minutes.

07 Can coating consumption be controlled?
Yes. By adjusting the template opening, vacuum pressure and speed of the coating line, you can control the coating thickness, thereby affecting coating consumption. Paint viscosity is temperature-controlled in the case of UV lacquers and according to the formulation of water-based paints. This also affects overall consumption.
08 What do I need apart from the vacuum coating machine to complete the process?
To make the process smoother, you can add infeed and outfeed conveyors. In any case, our solution is a fully integrated one comprising material preparation, application and drying. Edge-coating units are often installed in existing double-end tenoners for more precise workpiece guidance and consequent absence of overspray.
09 How flexible is the machine?
As vacuum coating is suited for large volumes of the same or similar type of profile, flexibility is not a key feature of machine or process. When the profile changes, the user simply has to change the template or painting head.
10 Can we say that vacuum coating is a sustainable process?
Yes. As the system handling the vacuum coating process is fully encapsulated, zero coating waste is possible, making this one highly sustainable aspect. Furthermore, you can use solvent-free coatings and the design of vacuum coating systems today enables users to minimise energy consumption. Machines have a 1.2 kW power output.