TAPPI UM 240 2015

A TAPPI Useful Method for determining the harmful shive content of mechanical pulp using a laboratory flat screen.

TAPPI UM 240 2015 provides a laboratory procedure for separating and measuring harmful shives in mechanical pulp by flat-screen screening. The method covers scope, apparatus requirements, test specimen preparation, screening and drying procedures, reporting, precision, and additional technical information. Results are reported as shive content by percentage or weight per oven-dry ton of pulp, supporting assessments of newsprint runnability and pulp screening efficiency. This three-page PDF is intended for pulp and paper laboratories, quality-control personnel, process engineers, and technical professionals working with mechanical pulps.

Application Scope: Laboratory evaluation and quality control of mechanical pulp shive content in pulp and paper manufacturing.