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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. The headbox can be adjusted to control what?
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Manifold (distributor) & the actual headbox
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
The solids (dry) fraction of a papermaking slurry or pulp sample

2. Refining (Beating)
Basis weight valve
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
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) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

3. Refining is done via ___________
1) Gravity section 2) Vacuum section 3) Press section
Rolling friction between surfaces
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Manifold (distributor) & the actual headbox

4. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Manifold
Wire
Consistency & flow rate
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

5. 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
Delivers stock onto the wire
The component makeup (recipe) of the sheet
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

6. What are the three main types of paper machine wet ends?
1) Gravity section 2) Vacuum section 3) Press section
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Wire

7. What does the manifold do?
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Gets stock into the headbox
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile

8. The _____ must get the same amount of fiber spread evenly across the headbox
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Basis weight valve
Manifold
Refining

9. Most modern refining is done using _____
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
(Wet tensile x 100 %)/Dry tensile
Disk refiners
Manifold

10. The 6 D's of Papermaking
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

11. Wet strength formula
Disk refiners
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
When refining pulverizes the primary and outer secondary layers of the fiber wall
(Wet tensile x 100 %)/Dry tensile

12. Refining reduces the _______ of the stock
1) Gravity section 2) Vacuum section 3) Press section
When refining pulverizes the primary and outer secondary layers of the fiber wall
Drainage rate (freeness)
1) Blending and furnish control 2) Control of consistency 3) Refining

13. Three basic parts of the stock preparation area are...
Refining
1) Blending and furnish control 2) Control of consistency 3) Refining
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

14. Basis Weight
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

15. What are the three types of headboxes?
1) Open 2) Air- padded 3) Hydraulic
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) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Manifold (distributor) & the actual headbox

16. Other names for the headbox approach system
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Manifold
(Wet tensile x 100 %)/Dry tensile
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

17. What are the types of press rolls?

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18. The 'white water loop'
Disk refiners
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat

19. The headbox is actually made up of the _____ and the ______
Manifold (distributor) & the actual headbox
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) Open 2) Air- padded 3) Hydraulic
1) Blending and furnish control 2) Control of consistency 3) Refining

20. How are papermaking fines produced?
When refining pulverizes the primary and outer secondary layers of the fiber wall
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) 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. Strong - smooth - printable paper CANNOT be made without the use of _____
Drainage rate (freeness)
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
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

22. Consistency
Manifold
Refining
The solids (dry) fraction of a papermaking slurry or pulp sample
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

23. What does the headbox do?
Manifold (distributor) & the actual headbox
Delivers stock onto the wire
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

24. Furnish
The component makeup (recipe) of the sheet
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
Basis weight valve
Refining

25. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
When refining pulverizes the primary and outer secondary layers of the fiber wall
Basis weight valve
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Open 2) Air- padded 3) Hydraulic

26. What are the main forces used to remove water on a paper machine wet end?
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) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
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) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat

27. The headbox must distribute the stock evenly onto the ____
Wire
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) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile

28. What are the key functions of the headbox approach system?
Drainage rate (freeness)
Consistency & flow rate
1) Blending and furnish control 2) Control of consistency 3) Refining
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