Digitising the wet grinding process / Norbert Kern in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4645 (10/2018)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4645 (10/2018) . - p. 37-38 Titre : Digitising the wet grinding process Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2018 Article en page(s) : p. 37-38 Langues : Anglais (eng) Catégories : Analyse des données Broyage par voie humide Broyeurs à billes Commande de processus Logiciels Procédés de fabrication Technique de la production Index. décimale : 667.9 Revêtements et enduits Résumé : The quality requirements for inks or functional coatings have clearly increased over recent years. In response, many manufacturers are operating their wet grinding systems with increasingly smaller grinding beads and maximum power input within the limits of their capacities. To help them be able to produce sustainably and safely at this level, the author reports from Bühler, on how it is launching digital services over the next few years, which can be used to optimise the production process beyond machinery and site limitations. Note de contenu : - Process data made available from anywhere - Useful statistics open potential for optimisation - Smart algorithms monitor and optimise the process - FIGURES : The future of the wet grinding industry - Cockpit views with mid- and longterm statistics - Easy traceability of production via key performance indicators - Internal machine benchmarking - Production module with MacroMedia TM pre-dispersing unit and MicroMedia+TM bead mill En ligne : https://drive.google.com/file/d/1-fO0kT924VkeN7H9a_t56HtIiywWAHU9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31254 [article]

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Milling tailored to its task / Norbert Kern in EUROPEAN COATINGS JOURNAL (ECJ), N° 9 (09/2017)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9 (09/2017) . - p. 40-44 Titre : Milling tailored to its task : Pre-dispersion improves product quality and reduces costs Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2017 Article en page(s) : p. 40-44 Langues : Anglais (eng) Catégories : Broyage par voie humide Broyeurs à billes Encre Pigments Procédés de fabrication Index. décimale : 667.9 Revêtements et enduits Résumé : In four practical examples it is shown that the use of a pre-dispersion step can increase the efficiency of fine grinding by up to 50%. With effective pre-dispersion it can be possible to use finer grinding beads to improve pigment grinding, quality and energy consumption. Note de contenu : - Higher productivity in manufacturing packaging inks - Removing contaminants improves textile ink milling - Process safety enhanced in agrochemical production - Printing ink quality improved - Why smaller beads give finer results - Bead sizes can be optimised to specific processes - FIGURES : 1. Typical grinding beads : yttrium-stabilised ZrO2 beads with a diameter of 0.8 mm - 2. Solids dosing during recirculation - 3. Example of a compact process solution for pre-dispersion and fine grinding - 4. Agitated bead mill for use with micro-grinding beads En ligne : https://drive.google.com/file/d/13ztcWUgWuwC0Yi8pj3CdN48svAIPI7qA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29036 [article]

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Particle size - old question with new answers / Norbert Kern in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2020)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2020) . - p. 46-52 Titre : Particle size - old question with new answers : So what comes next for grinding technology ? Is the industry ready for digitisation ? Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2020 Article en page(s) : p. 46-52 Langues : Anglais (eng) Catégories : Broyage par voie humide Procédés de fabrication Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : Wet grinding as a process has been around for hundreds of years, with technology constantly refining what's opssible in terms of efficiency and quality. 2020 sees the introduction of a step-change in technology that arguably takes the industry to the limits of the physics of what's possible. But that's not the end of the story ; a new digital horizon could continue to drive progress for the next decade. Note de contenu : - The 5 fundamentals of wet grinding - 1. Uniform particle distribution is the ultimate goal - 2. Different material types require different amounts of energy - 3. Different forces are required to reduce sizes in different materials - 4. Target properties require different approaches - 5. The smaller the beads, the more efficient the process - The history of wet milling - A step change in technology for 2020 - 1. New technology enables even smaller beads - 2. Introduction higher flow rates - Entry-level dashboards to improve decision-making - Next level statistics and insights - The ultimate goal - Smart algorithms to minitor and optimise the process - Fig. 1 : Energy requirement for differents materials - Fig. 2 : The forces at work in wet grinding - Fig. 3 : Using wet grinding to create transparent dispersion - Fig. 4 : the number of beads in a unit volume - Fig. 5 : Number of beads in a given volume as a function bead size - Fig. 6 : Bühler's new design for the 'MicroMedia Invicta'. - Fig. 7 : Process improvements using the new technology - Fig. 8 : A digital dashboard gives operators and managers better control En ligne : https://drive.google.com/file/d/1s_rJ0H2nAwZk3aW3BRCtQ10-rWZI3udB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33898 [article]

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Wet grinding for UV inks / Stephen Jung in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4463 (04/2003)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4463 (04/2003) . - p. 30-31 Titre : Wet grinding for UV inks Type de document : texte imprimé Auteurs : Stephen Jung, Auteur Année de publication : 2003 Article en page(s) : p. 30-31 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Broyage par voie humide Encre d'imprimerie Procédés de fabrication Température -- Contrôle Index. décimale : 667.4 Encres Résumé : Printings inks can be difficult to process because of the need to prevent high temperatures during milling. The author describes how to achieve high speed processing at low temperatures. Processing high viscosity and temperature sensitive products is highly demanding for wet grinding technology. On the one hand, high product qualities are driven by high production capacities, but on the other hand, the temperature sensitivity of several products places high demands on the temperature control and control of the grinding system. High viscosity printing inks or printing inks pastes like UV-offset, sheet fed offset, heat set, screen printing inks and additives for printing inks is an application with a viscosity range of approximately 50 - 400 Pas. When the UV-printing ink market is examined closely, an enormous increase is evident. The sales figures worlwide increased from €175m in 1995 to €367m in 2000. In 2005, sales figures of €513m are predicted. Offset inks interlacing under UV-light have a maximum permissible temperature of 50-60°C and are extremely sensitive to contamination. Because of these characteristics, the process must change from an open contamination delicate grinding system with a three roll mill to an enclosed grinding system with optimised temperature control at the highest grinding efficiency. Note de contenu : - Grinding system - Machine construction - Complete solution - Mobile product tank Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27938 [article]

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Wet grinding process steps determine quality / Norbert Kern in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4622 (07/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4622 (07/2016) . - p. 30-31 Titre : Wet grinding process steps determine quality Type de document : texte imprimé Auteurs : Norbert Kern, Auteur Année de publication : 2016 Article en page(s) : p. 30-31 Langues : Anglais (eng) Catégories : Broyage par voie humide Broyeurs à billes Index. décimale : 660.2 Génie chimique Résumé : Products, such as low viscosity inks and coatings, have increased quality requirements. At the same time manufacturers are looking to reduce energy, production and raw material costs. The wet grinding process as the key for quality development, still has potential to be optimised by adjusting machine, bead and product parameter. Key words, such as smaller beads, higher pigment concentrations, highest flow rate are often used but in the end it requires an alignment of all these process parameters to achieve the best possible results. Note de contenu : - Product flow rate - Grinding beads - Bead material and quality - Pre-mixing and feed particle size En ligne : https://drive.google.com/file/d/1UWtMzJG8UbL-G9r_qZgsm3dpqH0W0hAR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26971 [article]

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