Paper mkaking process

The time that required for water to drains through the fiber mat is

• Freeness

• WRV

• Fiber Morphology

• Drainage time

If the fiber in the pulp stock has high coarseness, then the resulting paper quality will likely be...

• High tensile

• High brightness

• High bulk

• Yellowish

If the ratio of softwood in the pulp is higher, the resulting paper quality will likely be...

• High Tensile, Low Bulk

• High tensile, High Bulk

• Low Tensile, Low Bulk

• Low Tensile, High Bulk

Which parts of board production in contains high BCTMP?

• Top

• Middle

• Bottom

• Top and Bottom

High refining intensity will affect to ...

• Low tensile

• High bulk

• Fines generation

• High brightness

What parameters can describe anionic trash on the surface of fibers?

• Zeta potential

• Conductivity

• Turbidity

• Cationic demand

Why should we not refine BCTMP to 300 CSF mL?

• Because BCTMP is long fibers

• Because BCTMP already has fractured fibers

• Because BCTMP has very thin fiber

• Because BCTMP has a thick cell wall
  

The most needed parameters for tissue production:

• High tensile and high drainage

• Low tensile and low porosity

• High porosity and low bulk

• High bulk and high softness

What is the optimum pH range for papermaking process?

• 6 - 8

• 1 - 2

• 3 - 5

• 9 - 10

If you have transparent paper, so the optical parameter will be ...

• High brightness

• Low whiteness

• Low opacity

• Low L degree