Investigation of Thin Fibre Mats Formed at High Velocity, 1997 Papermakers Conference Proceedings

This paper describes an experimental method, based on a closed flow loop, for the estimation of wire and mat resistance. While most test devices use low approach velocities that are more representative of drainage over vacuum elements, this investigation focused on approach velocities that are found at the initial impingement of the jet. Design of the experimental setup and test methods including results from machine measurements are shown in detail. The results indicate that the closed flow loop method results in a realistic prediction of the flow resistance through the wire and fibre mat. These predictions can be used for the development of an analytical flow model in the jet impingement region on paper machines.

Author: Herzig, R., Johnson, D. B.
Investigation of Thin Fibre Mats Formed at High Velocity, 19
Investigation of Thin Fibre Mats Formed at High Velocity, 1997 Papermakers Conference Proceedings
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