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The PFI mill is a beater featuring a high reproducibility, used for studying the relationship between beating degree of pulp and physical properties. This machine is basically an experimental beater widely used in the preparation stage of paper making. Beating mechanism: a constant load is given to the pulp circulating in between stainless steel roll and cylindrical mill house, which are rotating with a constant difference in circumferential velocity, applying mechanical effects such as shear and compression, thereby performing beating by frictional forces between fibers.
The number of rotations is read on the counter. The beating degree is evaluated by the freeness tester.

参考規格 :

• [JIS]P-8221-2-2018
• [TAPPI]T248sp-21
• [ISO]5264-2-2011