3-D image holograms in large print runs / Thomas Fäcke in KUNSTSTOFFE INTERNATIONAL, Vol. 99, N° 6/2009 (06/2009)

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 99, N° 6/2009 (06/2009) . - p. 43-45 Titre : 3-D image holograms in large print runs Type de document : texte imprimé Auteurs : Thomas Fäcke, Auteur Année de publication : 2009 Article en page(s) : p. 43-45 Langues : Anglais (eng) Catégories : Dispositifs de sécurité Films plastiques Holographie Photopolymères -- Applications industrielles Polycarbonates Index. décimale : 668.4 Plastiques, vinyles Résumé : Full-color photopolymer - Until now, materials and processes have been colored holograms in large print runs. This could all change thanks to a new holographic photopolymer. A specially developed polycarbonate film with application-oriented material properties has proved a suitable carrier material for this photopolymer in the high-security holograms sector. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5910 [article]

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New high- throughput screening tool for the evaluation of pigmented UV-A curable coatings- : A case study using low energy lamps / Stephanie Strazisar in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 4 (10/2006)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 4 (10/2006) . - p. 307-312 Titre : New high- throughput screening tool for the evaluation of pigmented UV-A curable coatings- : A case study using low energy lamps Type de document : texte imprimé Auteurs : Stephanie Strazisar, Auteur ; Margaret Kendi, Auteur ; Thomas Fäcke, Auteur ; Leoné Hermans-Blackburn, Auteur ; Xudong Sharon Feng, Auteur Année de publication : 2006 Article en page(s) : p. 307-312 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Marquage  fluorescent'  'Criblage  haut  débit'  Photoamorceur  Cinétique  Copolymérisation  Photochimie  'Copolymère  uréthane  acrylate' Index. décimale : 667.9 Revêtements et enduits Résumé : Pigmented UV radiation-curable coatings have been a challenge to the coatings formulator for a long time. A critical match of pigment and photoinitiator package is crucial for good cure. Another issue facing the coatings chemist is the popularity of low energy lamps, which offer ease of handling, reduced safety concerns, and a low price tag. Obviously, the combination of curing pigmented coatings and using low energy lamps poses a special challenge. To improve the pigmented coating development cycle, a rapid workflow was needed to screen formulations for cure under low energy UV-A radiation. For these types of applications, a high-throughput screening assay for discovering desirable photoinitiator packages was developed. Fluorescent dye-doped coatings cured under UV-A radiation were extracted with solvent. The relative degree-of-cure of the film was determined to be inversely related to a combination of the absorbance and fluorescence of the extractant. When this assay is used in conjunction with automated liquid handling and a spectrophotometer with an x-y scanning stage, the coatings formulator can analyze a large variable set in a short period of time. A primary screening of photoinitiators using this workflow suggests Lucirin® TPO-L, Darocur® 4265, and Irgacure® 2100 as optimum choices. DOI : 10.1007/s11998-006-0024-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-006-0027-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3684 [article]

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