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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. Furnish
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) Retention aids 2) Sizing agents 3) Fillers 4) Strength additives 5) Dyes & pigments 6) pH control additives 7) Specialty additives 8) Operational improvement additives
The component makeup (recipe) of the sheet
Wire

2. Strong - smooth - printable paper CANNOT be made without the use of _____
Refining
Manifold
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
The solids (dry) fraction of a papermaking slurry or pulp sample

3. Wet strength formula
The component makeup (recipe) of the sheet
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
(Wet tensile x 100 %)/Dry tensile

4. The _____ must get the same amount of fiber spread evenly across the headbox
The component makeup (recipe) of the sheet
Wire
Disk refiners
Manifold

5. Refining is done via ___________
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) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Rolling friction between surfaces

6. Three basic parts of the stock preparation area are...
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Blending and furnish control 2) Control of consistency 3) Refining
(Wet tensile x 100 %)/Dry tensile
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

7. What does the headbox do?
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) Blending and furnish control 2) Control of consistency 3) Refining
Delivers stock onto the wire
1) Open 2) Air- padded 3) Hydraulic

8. Consistency
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile
Manifold

9. The headbox must distribute the stock evenly onto the ____
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Disk refiners
Wire

10. Refining (Beating)
Manifold
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
The component makeup (recipe) of the sheet
1) Gravity section 2) Vacuum section 3) Press section

11. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
The component makeup (recipe) of the sheet
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Gravity section 2) Vacuum section 3) Press section
Basis weight valve

12. How are papermaking fines produced?
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) Retention aids 2) Sizing agents 3) Fillers 4) Strength additives 5) Dyes & pigments 6) pH control additives 7) Specialty additives 8) Operational improvement additives
Drainage rate (freeness)

13. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Manifold (distributor) & the actual headbox
Consistency & flow rate
1) Open 2) Air- padded 3) Hydraulic
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

14. The headbox can be adjusted to control what?
1) Open 2) Air- padded 3) Hydraulic
The solids (dry) fraction of a papermaking slurry or pulp sample
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

15. The 6 D's of Papermaking
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Refining
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Consistency & flow rate

16. What does the manifold do?
Manifold (distributor) & the actual headbox
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Gets stock into the headbox
Rolling friction between surfaces

17. Most modern refining is done using _____
Disk refiners
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
The component makeup (recipe) of the sheet
1) Blending and furnish control 2) Control of consistency 3) Refining

18. What are the key functions of the headbox approach system?
Wire
Consistency & flow rate
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

19. What are the main forces used to remove water on a paper machine wet end?
Manifold (distributor) & the actual headbox
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Gets stock into the headbox

20. The headbox is actually made up of the _____ and the ______
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
The component makeup (recipe) of the sheet
Manifold (distributor) & the actual headbox
1) Blending and furnish control 2) Control of consistency 3) Refining

21. Other names for the headbox approach system
1) Open 2) Air- padded 3) Hydraulic
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) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Delivers stock onto the wire

22. What are the three types of headboxes?
1) Open 2) Air- padded 3) Hydraulic
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
(Wet tensile x 100 %)/Dry tensile
Manifold (distributor) & the actual headbox

23. What are the types of press rolls?

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24. What are the basic categories/types of additives used for papermaking?
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
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

25. 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) 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) 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

26. Refining reduces the _______ of the stock
Drainage rate (freeness)
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
The component makeup (recipe) of the sheet

27. Basis Weight
Basis weight valve
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Blending and furnish control 2) Control of consistency 3) Refining
The solids (dry) fraction of a papermaking slurry or pulp sample

28. What are the three main types of paper machine wet ends?
Basis weight valve
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