Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Wood coating trends in Europe and North America
The future prospects for wood coatings in Europe are mainly driven by increasing demand on surface quality and legislation concerning environmental issues. This means that economical and ecologically sound systems will replace old, mostly solventborne coatings. Investigations on eco-efficiency have shown that UV-curable coatings have an edge over the other competing finishes. A major driving factor toward UV as a compliant technology is the reduction of VOCs. Another option to compliance is to follow a definite plan for reduction of solvent consumption. By imposing a new discipline, this legislation will help European wood finishers to transition to compliant technologies. On the other hand, it might accelerate the exodus of furniture markets to countries outside the EU. Radiation-cure wood coatings have already set a high standard of quality. Recent product developments in UV-waterborne und UV-powder technologies have shown that the disadvantages of the corresponding conventional technologies can be overcome by radiation curing. There are already UV-waterborne products like acrylates and aromatic and aliphatic urethane acrylates on the market for use in sprayable coatings, and even for 3D substrates. The market for UV-powder systems is at an early stage, but there are signs that for certain substrates, like high-quality MDF, UV powder is an alternative to liquid UV coatings. Other positive aspects of radiation curing are low emissions and low extractables from coated surfaces. Emissions from coating surfaces, like formaldehyde from acid-curing systems, have become a big issue. Tests have shown that emissions from coatings are partly related to sensitivity to certain raw materials used in formulation. Of major importance are impurities in oligomers and volatility of photoinitiator fragments. State of the art UV-curable materials can be formulated for very low emission rates during and after cure. Although radiation curing has proven its superiority over conventional systems in many cases, there are still limitations that have to be overcome by new developments. So far, UV-curable wood coatings are restricted to indoor use and technical applications. With the development of specially designed products and application methods, the joinery market will soon be explored for radiation curing as well.
Wood coating trends in Europe and North America
The future prospects for wood coatings in Europe are mainly driven by increasing demand on surface quality and legislation concerning environmental issues. This means that economical and ecologically sound systems will replace old, mostly solventborne coatings. Investigations on eco-efficiency have shown that UV-curable coatings have an edge over the other competing finishes. A major driving factor toward UV as a compliant technology is the reduction of VOCs. Another option to compliance is to follow a definite plan for reduction of solvent consumption. By imposing a new discipline, this legislation will help European wood finishers to transition to compliant technologies. On the other hand, it might accelerate the exodus of furniture markets to countries outside the EU. Radiation-cure wood coatings have already set a high standard of quality. Recent product developments in UV-waterborne und UV-powder technologies have shown that the disadvantages of the corresponding conventional technologies can be overcome by radiation curing. There are already UV-waterborne products like acrylates and aromatic and aliphatic urethane acrylates on the market for use in sprayable coatings, and even for 3D substrates. The market for UV-powder systems is at an early stage, but there are signs that for certain substrates, like high-quality MDF, UV powder is an alternative to liquid UV coatings. Other positive aspects of radiation curing are low emissions and low extractables from coated surfaces. Emissions from coating surfaces, like formaldehyde from acid-curing systems, have become a big issue. Tests have shown that emissions from coatings are partly related to sensitivity to certain raw materials used in formulation. Of major importance are impurities in oligomers and volatility of photoinitiator fragments. State of the art UV-curable materials can be formulated for very low emission rates during and after cure. Although radiation curing has proven its superiority over conventional systems in many cases, there are still limitations that have to be overcome by new developments. So far, UV-curable wood coatings are restricted to indoor use and technical applications. With the development of specially designed products and application methods, the joinery market will soon be explored for radiation curing as well.
Wood coating trends in Europe and North America
Bankowsky, H.H. (Autor:in)
Industrial Paint and Powder ; 79 ; 12-19
2003
8 Seiten, 2 Bilder, 7 Tabellen
Aufsatz (Zeitschrift)
Englisch
Anstrich (Überzug) , Emissionsminderung , Entwicklungsstand , flüchtiges Produkt , Gesetzgebung , Holz , Möbelindustrie , Oberflächeneigenschaft , organische Verbindung , Pulverlack , Strahlungstrocknung , Trend (Entwicklung) , Überzug (Beschichtung) , Ultraviolettstrahlung , Ultravioletttrocknung , Umweltpolitik , Umweltschutz
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