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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. Refining (Beating)
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
Wire
The component makeup (recipe) of the sheet

2. What are the types of press rolls?

3. What are the three main types of paper machine wet ends?
1) Gravity section 2) Vacuum section 3) Press section
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
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

4. The headbox is actually made up of the _____ and the ______
Consistency & flow rate
1) Gravity section 2) Vacuum section 3) Press section
Rolling friction between surfaces
Manifold (distributor) & the actual headbox

5. Three basic parts of the stock preparation area are...
1) Blending and furnish control 2) Control of consistency 3) Refining
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Delivers stock onto the wire
Basis weight valve

6. Strong - smooth - printable paper CANNOT be made without the use of _____
Basis weight valve
Refining
The component makeup (recipe) of the sheet
Consistency & flow rate

7. What does the manifold do?
1) Open 2) Air- padded 3) Hydraulic
Gets stock into the headbox
Basis weight valve
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

8. What are the three types of headboxes?
Manifold
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Open 2) Air- padded 3) Hydraulic
Delivers stock onto the wire

9. Furnish
The component makeup (recipe) of the sheet
Delivers stock onto the wire
1) Gravity section 2) Vacuum section 3) Press section
When refining pulverizes the primary and outer secondary layers of the fiber wall

10. The headbox must distribute the stock evenly onto the ____
Wire
Manifold (distributor) & the actual headbox
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Open 2) Air- padded 3) Hydraulic

11. What are the key functions of the headbox approach system?
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
When refining pulverizes the primary and outer secondary layers of the fiber wall
Drainage rate (freeness)

12. How are papermaking fines produced?
When refining pulverizes the primary and outer secondary layers of the fiber wall
Basis weight valve
Wire
Disk refiners

13. The headbox can be adjusted to control what?
Basis weight valve
1) Open 2) Air- padded 3) Hydraulic
Gets stock into the headbox
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

14. What are the main forces used to remove water on a paper machine wet end?
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
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
The solids (dry) fraction of a papermaking slurry or pulp sample

15. What are the basic categories/types of additives used for papermaking?
Refining
1) Open 2) Air- padded 3) Hydraulic
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

16. Basis Weight
Consistency & flow rate
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

17. Consistency
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Delivers stock onto the wire
The solids (dry) fraction of a papermaking slurry or pulp sample
Manifold

18. The _____ must get the same amount of fiber spread evenly across the headbox
Manifold
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
When refining pulverizes the primary and outer secondary layers of the fiber wall

19. The 'white water loop'
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
Rolling friction between surfaces
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

20. Other names for the headbox approach system
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Delivers stock onto the wire
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Gravity section 2) Vacuum section 3) Press section

21. Most modern refining is done using _____
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile
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
Disk refiners

22. The 6 D's of Papermaking
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Gravity section 2) Vacuum section 3) Press section
Gets stock into the headbox
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

23. Refining is done via ___________
Rolling friction between surfaces
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) 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

24. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
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
Basis weight valve
Rolling friction between surfaces
Manifold

25. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Consistency & flow rate
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Blending and furnish control 2) Control of consistency 3) Refining
Basis weight valve

26. Refining reduces the _______ of the stock
(Wet tensile x 100 %)/Dry tensile
Drainage rate (freeness)
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Wire

27. What does the headbox 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
Delivers stock onto the wire
1) Blending and furnish control 2) Control of consistency 3) Refining

28. Wet strength formula
Delivers stock onto the wire
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
(Wet tensile x 100 %)/Dry tensile
Refining