Highlighting the importance of homogeneous curing / David Ivarsson in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4666 (12/2020)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 210, N° 4666 (12/2020) . - p. 15-17 Titre : Highlighting the importance of homogeneous curing Type de document : texte imprimé Auteurs : David Ivarsson, Auteur Année de publication : 2020 Article en page(s) : p. 15-17 Langues : Anglais (eng) Catégories : Automatisation Diodes électroluminescentes Revêtements -- Séchage sous rayonnement ultraviolet Revêtements organiques Surveillance numérique Index. décimale : 667.9 Revêtements et enduits Résumé : Impact of different intensities on the performance of LED cured coatings. The UV-LED technology provides a number of great advantages, such as energy savings, long lifetime, low heat, no ozone and no mercury. With LED technology, we rely on thousands of small LEDs to sufficiently cure our coating. What if there is a deviation along the width of the lamp? If a segment goes out, if some of the optics gets damaged or dirty, how does this impact the curing and the final properties? See Figures 1 and 2. This study aims to determine what level of deviation causes problems with insufficient cure. To prevent problems with insufficient cure, Efsen has developed a proprietary technology, to continuously monitor the output of an UV lamp during production. Not only does this show us the complete picture of the UV output along the width of the lamp, it is also able to use the extracted information to adjust the power level of any segments that do not conform to the specification. This will provide an assurance, in real time, that all segments perform according to the specifications and also lets you know directly when there is damage, dirt or other issues preventing a segment to perform to standard. Note de contenu : - What is the required illumination to sufficiently cure the reactive material ? - Transitioning to industry 4.0 - accurate curing requirements - The choice of wavelength - Test setup and execution - Dose and peak requirements - The importance of monitoring the full width of an LED array, in order to maintain the cure required for desired coating performance - In-line continuous automated dynamic UV monitoring En ligne : https://drive.google.com/file/d/1yFXxM4hH3QfATQxueyTGiLnsrRFhoRgx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36739 [article]

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