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TAPPI TIP 0404-54 Headbox Approach Piping Guidelines
standard by Technical Association of the Pulp and Paper Industry, 2017
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Full Description
TAPPI TIP 0404-54 provides guidelines for design of paper machine headbox approach pipingbetween the machine chest discharge and the headbox. The approach system has a significant influence onuniformity of the final sheet of paper. The goal of this TIP was to compile information on current approach piping guidelines from machine builders, other equipment suppliers, design engineers, and paper company representatives.The purpose is to provide design guidelines that paper companies can use to minimize residual machine direction basis weight variation on paper machines. The guidelines were developed for paper machines operating conventional headboxes. Changes may be required for application on machines operating at low ( < 0.2%) or high ( > 2.0%) headbox consistency.