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Title: Lubrication Analysis of Some Non-Newtonian Materials in Roll Coating Industrial Processes
Authors: Zafar, Muhammad
Keywords: Sciences
Issue Date: 2020
Publisher: Riphah International University, Islamabad
Abstract: In this thesis, a theoretical investigation has been offered of the roll coating procedure for nonNewtonian incompressible materials when they pass through the small gap between two rotating rolls. In industries, this procedure is very common to yield a web of anticipated thickness through variations of certain fluid parameters. The objective of the industrial procedure is to ensure the beautification and protection of the web against environment. This important method is commonly used to manufacture web of ultimate appearance and desired thickness in the plastics, paper, steel and rubber industries. Particularly, the coating is a process for the manufacture of continuous sheet or film by squeezing the melt between 2 heated counter-rotating rolls. Flow equations are simplified using LAT and then its calculation for viscoelastic and viscoplastic materials. Measurements of velocity, pressure profiles, film thickness, roll power to the fluid and separating force of roll / sheet are evaluated. Control of these engineering parameters is of considerable significance during the manufacture process. The aim of study is the development of various flow models to examine the impact of numerous material parameters in the coating process.
Gov't Doc #: 19880
Appears in Collections:PhD Thesis of All Public / Private Sector Universities / DAIs.

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