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Cleanliness in submicrometer and atomic percent range in ADHESION - ADHESIVES + SEALANTS, Vol. 19, N° 2/2022 (2022)
[article]
Titre : Cleanliness in submicrometer and atomic percent range Type de document : texte imprimé Année de publication : 2022 Article en page(s) : p. 10-12 Langues : Multilingue (mul) Catégories : Nettoyage industriel
Nettoyage industriel -- Appareils et matérielsTags : 'Nettoyage ultra-fin' 'Salle blanche' chimique' Plasma 'Rinçage par immersion/aspersion' Pulvérisation Revêtement Collage Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Particulate and filmic component cleanliness must be achieved reliably and efficiently in series production, especially when manufacturing, joining and coating technologies change. In parallel, requirements are growing due to ever stricter regulatory specifications. In addition to cleaning and drying processes designed to meet specific requirements and suitable technology, the software and the cleaning environment must also be adapted accordingly. Note de contenu : - Plant concepts for cleaning
- Cleaning processes and systems for ultra-high cleanliness
- Requirements for the process development
- Fig. 1 : The various treatment stations of this individually designed ultrasonic ultrafine cleaning system can be flexibly accessed
- Fig. 2 : By combining wet chemical and low-pressure plasma cleaning methods for ultrafine degreasing in a single machine, the surface characteristics required for downstream coating or bonding are efficiently achieved
- Fig. 3 : For integration into clean rooms the ultrasonic ultrafine cleaning systems are fitted out in compliance with the applicable clean room class
- Fig. 4 : In the immersion/spray rinse tanks specifically developed for ultrafine cleaning processes, the parts are sprayed off as they exit the bath which enhances the rinsing resultEn ligne : https://drive.google.com/file/d/1vEq8rAf_kDO2Uugjhv6nx5i0FtEUlDYb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37973
in ADHESION - ADHESIVES + SEALANTS > Vol. 19, N° 2/2022 (2022) . - p. 10-12[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23556 - Périodique Bibliothèque principale Documentaires Disponible Effects of injection molding holding pressure on the replication of surface microfeatures / T. R. Tofteberg in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 3 (07/2010)
[article]
Titre : Effects of injection molding holding pressure on the replication of surface microfeatures Type de document : texte imprimé Auteurs : T. R. Tofteberg, Auteur ; H. Amédro, Auteur ; F. Grytten, Auteur ; E. Andreassen, Auteur Année de publication : 2010 Article en page(s) : p. 236-241 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Matières plastiques -- Moulage par injection
Moulage par injection -- Défauts
PolycarbonatesTags : Polycarbonate 'Moulage par injection' 'Interférométrie de lumière blanche' (WLI) à haute résolution verticale' (HDVSI) Recuisson 'Pression possession' 'Lignes flux' 'Défauts d'injection' Index. décimale : 668.9 Polymères Résumé : The injection molding of an optical grating was studied using two different polycarbonates. The grating had period 10 μm and peak-to-valley distance ∼1 μm. Parts were molded using different holding pressures and mold temperatures. After production, the parts were annealed at 100°C. The replication was investigated using white light interferometry (WLI) before and after annealing. WLI was performed using high definition vertical-scanning interferometry (HDVSI) to resolve the details of the molded gratings with a noise level below 2 nm. It was observed that increasing the holding pressure could have either a positive or a negative effect on the replication. When the microfeatures were not fully filled, an increased holding pressure improved the definition of the features. However, for both polymers, it was observed that the replication as a function of holding pressure started to drop when the holding pressure was increased above an optimal value. This could be due to an elastic recoil occurring after releasing the holding pressure. The peak-to-valley distance of the grating was reduced after annealing. This effect was larger for parts molded using a low mold temperature. This is probably due to a higher cooling rate giving higher internal stresses, which will relax during annealing. DOI : 10.3139/217.2340 En ligne : https://drive.google.com/file/d/1Jr8pmzkZ8ZrKvyMacqDsvjly-jPSoUt-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9739
in INTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 3 (07/2010) . - p. 236-241[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012302 - Périodique Bibliothèque principale Documentaires Disponible