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Paper Science

Instructions:

Answer 28 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. How are papermaking fines produced?
When refining pulverizes the primary and outer secondary layers of the fiber wall
Basis weight valve
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Rolling friction between surfaces

2. What are the types of press rolls?

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3. Furnish
1) Open 2) Air- padded 3) Hydraulic
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
The component makeup (recipe) of the sheet
1) Gravity section 2) Vacuum section 3) Press section

4. What are the main forces used to remove water on a paper machine wet end?
Drainage rate (freeness)
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
The component makeup (recipe) of the sheet
Refining

5. Most modern refining is done using _____
The component makeup (recipe) of the sheet
1) Metering of THICK STOCK for basis weight control 2) Dispersion and dilution of the THICK STOCK into THIN STOCK 3) Uniform distribution of the THIN STOCK across the width of the machine
Manifold
Disk refiners

6. What are the three main types of paper machine wet ends?
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Gravity section 2) Vacuum section 3) Press section
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Disk refiners

7. The headbox can be adjusted to control what?
A harsh mechanical action carried out on fibers to: 1) Collapse them into flat papermaking ribbons and 2) Fibrillate the outer surface of the fiber to increase bonding area and sheet strength
Refining
Consistency & flow rate
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

8. Consistency
Refining
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Gravity section 2) Vacuum section 3) Press section
Disk refiners

9. What does the manifold do?
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
1) Gravity section 2) Vacuum section 3) Press section
Wire
Gets stock into the headbox

10. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Consistency & flow rate
Manifold (distributor) & the actual headbox
1) Blending and furnish control 2) Control of consistency 3) Refining
Rolling friction between surfaces

11. Strong - smooth - printable paper CANNOT be made without the use of _____
Refining
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Disk refiners
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

12. The _____ must get the same amount of fiber spread evenly across the headbox
Basis weight valve
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Drainage rate (freeness)
Manifold

13. The 6 D's of Papermaking
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
(Wet tensile x 100 %)/Dry tensile
1) Open 2) Air- padded 3) Hydraulic
Refining

14. The headbox is actually made up of the _____ and the ______
A harsh mechanical action carried out on fibers to: 1) Collapse them into flat papermaking ribbons and 2) Fibrillate the outer surface of the fiber to increase bonding area and sheet strength
Manifold (distributor) & the actual headbox
(Wet tensile x 100 %)/Dry tensile
Refining

15. What does the headbox do?
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Rolling friction between surfaces
Delivers stock onto the wire

16. Refining is done via ___________
1) Blending and furnish control 2) Control of consistency 3) Refining
Rolling friction between surfaces
(Wet tensile x 100 %)/Dry tensile
When refining pulverizes the primary and outer secondary layers of the fiber wall

17. Refining reduces the _______ of the stock
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Consistency & flow rate
Drainage rate (freeness)
1) Retention aids 2) Sizing agents 3) Fillers 4) Strength additives 5) Dyes & pigments 6) pH control additives 7) Specialty additives 8) Operational improvement additives

18. The headbox must distribute the stock evenly onto the ____
Disk refiners
Wire
1) Open 2) Air- padded 3) Hydraulic
Gets stock into the headbox

19. What are the three types of headboxes?
1) Open 2) Air- padded 3) Hydraulic
Disk refiners
1) Blending and furnish control 2) Control of consistency 3) Refining
Rolling friction between surfaces

20. What are the key functions of the headbox approach system?
1) Open 2) Air- padded 3) Hydraulic
1) Metering of THICK STOCK for basis weight control 2) Dispersion and dilution of the THICK STOCK into THIN STOCK 3) Uniform distribution of the THIN STOCK across the width of the machine
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

21. Wet strength formula
1) Metering of THICK STOCK for basis weight control 2) Dispersion and dilution of the THICK STOCK into THIN STOCK 3) Uniform distribution of the THIN STOCK across the width of the machine
(Wet tensile x 100 %)/Dry tensile
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Blending and furnish control 2) Control of consistency 3) Refining

22. Other names for the headbox approach system
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Retention aids 2) Sizing agents 3) Fillers 4) Strength additives 5) Dyes & pigments 6) pH control additives 7) Specialty additives 8) Operational improvement additives
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

23. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
1) Open 2) Air- padded 3) Hydraulic
Basis weight valve
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Gets stock into the headbox

24. The 'white water loop'
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
1) Gravity section 2) Vacuum section 3) Press section
Refining
(Wet tensile x 100 %)/Dry tensile

25. What are the basic categories/types of additives used for papermaking?
1) Retention aids 2) Sizing agents 3) Fillers 4) Strength additives 5) Dyes & pigments 6) pH control additives 7) Specialty additives 8) Operational improvement additives
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Drainage rate (freeness)

26. Refining (Beating)
Basis weight valve
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
A harsh mechanical action carried out on fibers to: 1) Collapse them into flat papermaking ribbons and 2) Fibrillate the outer surface of the fiber to increase bonding area and sheet strength
1) Open 2) Air- padded 3) Hydraulic

27. Three basic parts of the stock preparation area are...
1) Blending and furnish control 2) Control of consistency 3) Refining
Manifold (distributor) & the actual headbox
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
(Wet tensile x 100 %)/Dry tensile

28. Basis Weight
1) Gravity section 2) Vacuum section 3) Press section
A harsh mechanical action carried out on fibers to: 1) Collapse them into flat papermaking ribbons and 2) Fibrillate the outer surface of the fiber to increase bonding area and sheet strength
Rolling friction between surfaces
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute