COARSENESS OF PULP FIBERS

• Coarseness of fibers has an important effect on many properties of paper.
• Coarseness expressed in decigrex decreases as the fibers are split with beating.
• Used as measure of the splitting effect of beating or refining equipment.
• Coarseness (weight per unit length) of the fibers in a pulp may be ascertained by counting the crossings of a known weight of fibers per unit area on a prepared slide over lines of known length.
• Crossings are counted with a microscope and mechanical stage, by traversing the slide over a series of 5cm.
• The “weight factors” of various fibers as described in TAPPI T401 “Fiber Analysis of Paper and Paperboard” should be proportional.

It Provides information on:

• Scope.
• Content.
• Keywords.
• Sampling.
• Procedure.
• Test specimens.
• Apparatus.
• Reagents.

It Benefit:

• Production Manager.
• Technical Manager.
• Researchers.
• Laboratory Personal.