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Visualization study of liquid surface stability for full reverse 3-roll coater with rigid gravure roll / Hirokazu Kobayashi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 1 (01/2014)
[article]
Titre : Visualization study of liquid surface stability for full reverse 3-roll coater with rigid gravure roll Type de document : texte imprimé Auteurs : Hirokazu Kobayashi, Auteur ; Masato Sasaki, Auteur Année de publication : 2014 Article en page(s) : p. 39-46 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Rouleau de gravure' inverse' Nervures visualisation Revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : Roll coating systems are widely used to coat a thin liquid layer on a moving substrate, and many publications discussing forward roll coating systems and reverse gap control coating systems are available. Recently, thinner and more uniform layers are required for use with the high-performance solutions involved. Moreover, high line speed coating is also required in order to reduce manufacturing costs. A reverse gravure roll system can coat a thin layer film at high line speed more easily than a flat roll coating system because only the liquid that enters the gravure cell is transferred to the next roll or substrate. However, the existence of the gravure cell complicates the flow between the rolls. To our knowledge, no systematic study in the literature has explored this condition in depth. In the present study, the flow between a reverse deformable roll and a solid stainless steel gravure roll is visualized in order to determine how the uniformity of coating in the high roll speed region is affected by operating parameters, that is, the speed ratio between the rolls and the properties of the coating liquid. The range for coating uniformity is compared with the case of a gap control system. The results show that the stable region can be extended by using the reverse gravure roll system. DOI : 10.1007/s11998-013-9500-8 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9500-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20614
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 1 (01/2014) . - p. 39-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16023 - Périodique Bibliothèque principale Documentaires Disponible Dynamic interferometric imaging of the thickness distribution of evaporating thin liquid films / Jacqueline Stamm in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)
[article]
Titre : Dynamic interferometric imaging of the thickness distribution of evaporating thin liquid films Type de document : texte imprimé Auteurs : Jacqueline Stamm, Auteur ; Dominik Daume, Auteur ; Tobias Hartwig, Auteur ; Maximilian Oschmann, Auteur ; Julian Schäfer, Auteur ; Hans Martin Sauer, Auteur ; Edgar Dörsam, Auteur Année de publication : 2019 Article en page(s) : p. 1663-1671 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Couches minces
Epaisseur -- Mesure
Gravure
Imagerie (technique)
Matériaux -- Epaisseur
Revêtement en phase solvantTags : 'Interférence en couches minces' 'Impression de gravure' fonctionnelle' 'Films séchage' 'Carte d'épaisseur' 'Evolution l'épaisseur' Index. décimale : 667.9 Revêtements et enduits Résumé : In functional printing, film homogeneity is a key criterion, but there are several phenomena leading to inhomogeneities. We shall focus on the solvent evaporation process of gravure-printed thin films. The best aspects of different published approaches are combined to create a new algorithm for optically determining the film thickness development. In this way, small structures as well as the overall thickness of large-area thin films can be tracked while drying. It becomes clear that the biggest challenge is balancing the camera resolution and frame rate to receive plausible and accurate results. Note de contenu : - Introduction : Challenges - State of the art - Developed model
- EXPERIMENTAL SETUP, MATERIALS, AND IMAGE PROCESSING
- RESULTS AND DISCUSSION : Thickness evolution of one pixel - Film thickness mapsDOI : 10.1007/s11998-019-00236-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00236-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33419
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Code-barres Cote Support Localisation Section Disponibilité 21321 - Périodique Bibliothèque principale Documentaires Disponible