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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. Strong - smooth - printable paper CANNOT be made without the use of _____
The solids (dry) fraction of a papermaking slurry or pulp sample
Basis weight valve
1) Open 2) Air- padded 3) Hydraulic
Refining

2. What are the key functions of the headbox approach system?
Drainage rate (freeness)
Manifold
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

3. Other names for the headbox approach system
Delivers stock onto the wire
1) Blending and furnish control 2) Control of consistency 3) Refining
The solids (dry) fraction of a papermaking slurry or pulp sample
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

4. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Open 2) Air- padded 3) Hydraulic
Consistency & flow rate
Gets stock into the headbox

5. What are the three types of headboxes?
1) Open 2) Air- padded 3) Hydraulic
1) Gravity section 2) Vacuum section 3) Press section
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

6. The headbox can be adjusted to control what?
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) 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) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

7. 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
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

8. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Basis weight valve

9. What are the types of press rolls?

10. What are the main forces used to remove water on a paper machine wet end?
Manifold
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Manifold (distributor) & the actual headbox
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat

11. What does the manifold do?
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Open 2) Air- padded 3) Hydraulic
Manifold
Gets stock into the headbox

12. Consistency
The solids (dry) fraction of a papermaking slurry or pulp sample
Rolling friction between surfaces
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
Wire

13. Refining reduces the _______ of the stock
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Basis weight valve
Manifold
Drainage rate (freeness)

14. Furnish
(Wet tensile x 100 %)/Dry tensile
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
The component makeup (recipe) of the sheet

15. 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) Blending and furnish control 2) Control of consistency 3) Refining
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
Consistency & flow rate

16. Refining (Beating)
The solids (dry) fraction of a papermaking slurry or pulp sample
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
(Wet tensile x 100 %)/Dry tensile
Drainage rate (freeness)

17. The headbox must distribute the stock evenly onto the ____
Wire
The component makeup (recipe) of the sheet
Rolling friction between surfaces
Manifold (distributor) & the actual headbox

18. Wet strength formula
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Refining
Consistency & flow rate
(Wet tensile x 100 %)/Dry tensile

19. The 6 D's of Papermaking
Delivers stock onto the wire
Basis weight valve
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
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

20. What does the headbox do?
When refining pulverizes the primary and outer secondary layers of the fiber wall
(Wet tensile x 100 %)/Dry tensile
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

21. Most modern refining is done using _____
Basis weight valve
Disk refiners
(Wet tensile x 100 %)/Dry tensile
The component makeup (recipe) of the sheet

22. How are papermaking fines produced?
Disk refiners
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 section 2) Vacuum section 3) Press section
When refining pulverizes the primary and outer secondary layers of the fiber wall

23. The headbox is actually made up of the _____ and the ______
Manifold
Manifold (distributor) & the actual headbox
The solids (dry) fraction of a papermaking slurry or pulp sample
Wire

24. What are the three main types of paper machine wet ends?
1) Gravity section 2) Vacuum section 3) Press section
When refining pulverizes the primary and outer secondary layers of the fiber wall
Refining
Drainage rate (freeness)

25. Refining is done via ___________
Gets stock into the headbox
Rolling friction between surfaces
Manifold
Refining

26. Basis Weight
Manifold (distributor) & the actual headbox
Basis weight valve
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Wire

27. The _____ must get the same amount of fiber spread evenly across the headbox
1) Gravity section 2) Vacuum section 3) Press section
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
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
Manifold

28. Three basic parts of the stock preparation area are...
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Blending and furnish control 2) Control of consistency 3) Refining
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile