[article]
| Titre : |
Benefits of UV-curable coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Kevin Bruen, Auteur ; Kurt Davidson, Auteur ; Daniel F. E. Sydes, Auteur ; Peter M. Siemens, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 42-48 |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Typically flexible fluoropolymer PUR coatings are spray applied directly after vulcanisation of the rubber during the continuous extrusion process and then thermally cured in a series of conventional, microwave or infrared ovens. This conventional cure process is costly, inefficient and results in high overhead costs. In the age of continual demands for cost reduction, improved efficiency and reduction in VOC levels, a range of waterborne 1-pack UV curable coatings meeting market and technical requirements have been developed. Realizing the benefits of a UV curable coating system in a continual extrusion process means at least an enormous increase in speed of cure, waste reduction, lower solvent emissions, lower energy costs and huge space savings. In some cases it is even the only way to implement the application of a coating into to the manufacturing process due to limitations in line speed and/or in the mechanical properties of the rubber substrate. |
| Note de contenu : |
Before the curing step the coating has no abrasion or chemical resistance and is often tacky
UV-curable coating systems cure in less than a second
UV-technology for continuous extrusion processes coating systems
Space saving
Easy installation of UV curing equipment
Lower energy costs
Reduced waste
Increased line speed
Coatings are based on different types of waterborne PUR-dispersions
UV-curing equipment with very stable UV output over life time
Parameters tested: solvent resistance, abrasion resistance and flexibility
Water removal stage is essential
Combining UV-output of a V- and a D-bulb respectively of a H and a D-bulb results in superior solvent resistance. |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9445 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 4/2004 (04/2004) . - p. 42-48
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