Liquid Film Coating

In spite of all the activity in coating process wide range of available methods or to invent a research, there is no preceding comprehensive new one. Then, of course, the details of the text that summarizes results obtained in various coatingequipmentmustbespecifiedanddesigned, placesaroundtheworldandpublishedindifferent and feasibility of the process selected must be technicaljournals. Inparticular,thereisnosingle demonstrated for a desired range of operating textthatsystematicallyinterpretsallthe physical conditions. For anexistingproduct,on theother mechanisms that control coating processes, and hand, the most pressing issues are often to that explains implications ofscientific principles expand the range of successful operation, for on industrial coating applications. This is not to instance to higher coating speeds, thinner wet saythatnobooksorreviewsoncoatingtechnology layers, or more layers coated simultaneously; to have been written in the past. However, they all eliminate coating imperfections or defects that focus oneithercoatingequipment(Higgins 1965; degrade product quality; and to increase the Booth 1970; Weiss 1977; Satas 1984); on just a yield, or the fraction ofsalable material from an fewparticularcoatingmethods(Middleman 1977; entire lot coated. Coating engineers, together Ruschak 1985);oronparticularaspectsofcoating with formulation chemists, also respond to technology such as numerical methods (Kistler never-endingquests to improve the performance and Scriven 1983), process control (Frost and ofthe final products which, in some instances in Gutoff 1991), or wettability (Blake 1984; Berg very subtle ways and in others to a significant 1993). The recent volumes edited by Cohen and extent, depend on careful control of the micro Gutoff(1992)and Benkreira(1993)emergedfrom structure or surface properties imparted on the shortcourseson coating technology. They cover coatedlayersbythecoatingflowprocessupstream.

Klappentext

This multi-authored volume provides a comprehensive and in-depth account of the highly interdisciplinary science and technology of liquid film coating. The book covers fundamental principles from a wide range of scientific disciplines, including fluid mechanics aand transport phenomena, capillary hydrodynamics, surface and colloid science. The authors, all acknowledged eperts in their fields, represent a balance between industrial and academic points of view. Throughout the text, many case studies illustrate how scientific principles together with advanced experimental and theoretical methods are applied to develop and optimize manufacturing processes of eve increasing sophiatication and efficiency. In the first part of the book, the authors systematically recount the underlying physical principles and important material properties. The second part of the book gives a comprehensive overview of the most advanced experimental, mathematical and computational methods available today to investigate coating processes. The third part provides an overview and critical literature review for all major classes of liquid film coating processes of industrial importance.

Inhalt

1. Coating science and technology: an overview.- One: Physics and material interactions of coating processes.- 2. Capillary hydrodynamics and interfacial phenomena.- 3. Wetting: static and dynamic contact lines.- 4. Surfactants: static and dynamic surface tension.- 5. Coating rheology: component influence on the rheological response and performance of water-borne coatings in roll applications.- 6. The fate of thin liquid films after coating.- Two: Methods of investigating coating processes.- 7. Experimental methods.- 8. Asymptotic methods for the mathematical analysis of coating flows.- 9. Advances in computational methods for free-surface flows.- Three: Theory and practice of coating processes.- 10. Analysis and design of internal coating die cavities.- 11: Premetered coating processes.- 11a Slot coating.- 11b Slide coating.- 11c Curtain coating.- 11d Surfactant effects in coating processes.- 12: Self-metered coating processes.- 12a Knife and roll coating.- 12b Meniscus roll coating.- 12c Elastohydrodynamic coating systems.- 12d High-speed blade coating.- 13. Free-meniscus coating processes.- 14. Spin coating.- 15. Control and optimization of coating processes.