Søren Juhl Hansen,
Product Marketing Manager
Karin Skov, Group Marketing Coordinator
Dear Painting Wood Reader,
Having the right information at the right place at the right time is a major factor for success. That’s why we’ve revamped our Painting Wood newsletter. Our short online version gives you a handy overview – no matter whether you’re at your desk or on the road with your tablet or smart phone. If you want to know more, just click on the PDF link to read, print out or download the complete article. You can also download the entire newsletter in PDF format and print it out if you’d prefer. But just like always, Painting Wood will still feature our latest products, technical subjects, case studies, news and background articles on Teknos.
We hope you have a good time reading it – online or offline alike!
P.S. Pass it on. We always like it when interested colleague sign up for the Painting Wood mailing list! And will be happy to hear any suggestions, requests or criticism you may have! A brief E-mail is all it takes.
The new AQUACOAT 2661 paint we announced in spring is now out on the market. AQUACOAT 2661 is a water borne one pack paint for coating PVC profiles in high-volume production processes. The coating provides hard-wearing, highly durable elastic surfaces, and is available in semi-gloss and a structured matt finish. AQUACOAT 2661 has been tested according to AAMA 615 for Superior Coatings, and all performed tests are 'passed' (some long-time exposure tests are still pending). In addition to the coating itself, there are also the new NMP-free water borne cleaning agents available: TEKNOCLEAN 1952-00 and 1953-00.
Teknos expands its range of water borne TEKNOLUX AQUA UV-curing coatings with new versions in white and colourless. The clear coat TEKNOLUX AQUA 1429 is now available in white as well. The coat is an all-round solution suitable for a wide range of application subjects to a variety of requirements.
TEKNOLUX AQUA 1728 had previously only been available in white, but can now be had as a clear coat as well. The water borne UV-cured coating was primarily designed for applications with strict requirements for the surfaces, such as kitchens, furniture or doors.
TEKNOLUX AQUA coatings are an exceptional solution for switching to modern, low-VOC coatings with short processing times.
LED lamp technology is being used more and more often for UV-curing coatings. This makes it important to keep in mind that LED lamps place special requirements on the coating. “LEDs emit monochromatic light instead of a spectrum. This means the coating has to be specifically formulated for drying at this wavelength,” explains Jørgen Ulrik Hansen, Research & Development Director at Teknos. This means that not every UV-curing coating is suitable for drying with LED lamps. Upon request Teknos is able to supply a number of UV curing coatings for the use of LED technology.
Teknos will be exhibiting at the international woodworking industry trade fair LESDREVMASH 2014 in Moscow from the 21st to 23rd of October. LESDREVMASH is one of the world’s most important trade fairs for the woodworking industry and is the largest trade fair of its -kind in Eastern Europe.
You’ll find Teknos at Stand 8 in Hall 3.
Electronic tickets and further information on the trade fair can be found at:
Teknos has over 40 years of experience with powder coatings and is one of the leading suppliers in many countries. Teknos powder coatings are used for agricultural machines, tools and furniture, as well as for aluminium profiles. Teknos supplies large profile manufacturers such as Nordic Aluminium and Mäkelä Alu Oy, to name but two examples. It provides a wide range of powder coatings for this industry with outstanding mechanical properties, such as INFRALIT PE 8350 and INFRALIT PE 8928. They are approved in accordance with GSB and Qualicoat (P-0412) and can be applied with tribo or corona systems.
Vamdrup is Teknos’ second largest production and distribution facility. An important part of our business in Denmark are wet and powder coatings providing high-performance corrosion protection for metal, as well as decorative coatings.
In the industrial wood segment, the company focuses on the window industry. “We supply more than three quarters of Danish window manufacturers and lead the market in this segment by a large margin,” says Marlene Juul Andersen, Market Manager Industrial Wood. When it comes to interior applications, Teknos primarily supplies manufacturers of panels, mouldings and furniture. Much of Teknos’ business in this field is made up of water borne and 100% UV coatings.
If primers and intermediate coats do not have a proper run off during the flow-coating process, this can lead to runners and colour changes in the case of primers. This is frequently the case when temperatures in the flow zone are too high and air humidity too low. We recommend targeted humidification in order to combat this. This can be achieved by either moistening the element before flow-coating or through targeted humidification of the flash off zone behind the flow coater, which leads to uniformly good climatic conditions. Investing in the necessary technology generally pays off since it significantly reduces costs and effort for sanding and re-priming.
There are two simple tests to determine whether the polymerisation process is complete.
(1) Tape test: Firmly place a strip of tape on the surface being treated and then remove it. If none of the paint sticks, it means the curing process is complete. There are special testing strips for this, but ordinary office tape is often used in practice.
(2) Scratch test: The service is scratched with a sharp object in a criss-cross pattern. This shows whether the coat of paint has cured all the way through.
Gallium lamps generally have a service life of roughly 1,500 hours, while mercury lamps generally last for about 2,000 hours. But environmental conditions (pollution) and the type of use are also major factors that determine how long UV curing lamps will really last. Continuous operation is the most efficient way to use them, as turning them on and off frequently will significantly reduce their service life. The lamp’s radiation intensity should be measured with a radiometer every two to three months to ensure reliable curing. These measurements can also be conducted by Teknos’ technical customer service department.
UV lamp performance can be determined using a radiometer which measures the intensity of the radiation emitted. EIT’s UV Power Puck and UV PowerMap models are two examples of suitable radiometers. They measure the maximum UV radiation intensity (in watts/cm²) and energy density (in joules/cm²) in UV curing applications. The necessary radiation intensity depends on many factors, such as the type of wood, coat thickness, pigmentation (clear or opaque), conveyor belt speed and number of lamps used. In practice, we recommend you to discuss the radiation intensity necessary for your specific case with Teknos’ technical customer service and then conduct measurements to monitor the defined target value.