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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 reduces the _______ of the stock
Drainage rate (freeness)
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

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

3. The headbox is actually made up of the _____ and the ______
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Gravity section 2) Vacuum section 3) Press section
Manifold (distributor) & the actual headbox
Rolling friction between surfaces

4. What are the three types of headboxes?
1) Open 2) Air- padded 3) Hydraulic
Manifold
Refining
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

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

6. Furnish
The component makeup (recipe) of the sheet
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
Disk refiners

7. What are the three main types of paper machine wet ends?
Wire
1) Gravity section 2) Vacuum section 3) Press section
Disk refiners
Manifold

8. Refining (Beating)
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
Gets stock into the headbox
When refining pulverizes the primary and outer secondary layers of the fiber wall
Delivers stock onto the wire

9. Wet strength formula
Disk refiners
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
(Wet tensile x 100 %)/Dry tensile

10. Other names for the headbox approach system
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control 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

11. What are the basic categories/types of additives used for papermaking?
Drainage rate (freeness)
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
When refining pulverizes the primary and outer secondary layers of the fiber wall

12. Basis Weight
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Rolling friction between surfaces
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
The solids (dry) fraction of a papermaking slurry or pulp sample

13. Most modern refining is done using _____
Basis weight valve
Manifold (distributor) & the actual headbox
Disk refiners
Delivers stock onto the wire

14. The headbox must distribute the stock evenly onto the ____
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
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

15. The headbox can be adjusted to control what?
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Gravity section 2) Vacuum section 3) Press section
Refining
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

16. Refining is done via ___________
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) Blending and furnish control 2) Control of consistency 3) Refining
(Wet tensile x 100 %)/Dry tensile
Rolling friction between surfaces

17. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
Consistency & flow rate
Gets stock into the headbox
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

18. Strong - smooth - printable paper CANNOT be made without the use of _____
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
(Wet tensile x 100 %)/Dry tensile
Refining

19. What does the manifold do?
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
Delivers stock onto the wire
Gets stock into the headbox

20. Consistency
The solids (dry) fraction of a papermaking slurry or pulp sample
Consistency & flow rate
Refining
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

21. What are the key functions of the headbox approach system?
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
Delivers stock 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

22. The 'white water loop'
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
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

23. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Rolling friction between surfaces
Drainage rate (freeness)
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Consistency & flow rate

24. What does the headbox do?
Refining
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Delivers stock onto the wire

25. What are the types of press rolls?

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26. Three basic parts of the stock preparation area are...
Refining
Manifold
1) Blending and furnish control 2) Control of consistency 3) Refining
Wire

27. How are papermaking fines produced?
When refining pulverizes the primary and outer secondary layers of the fiber wall
Consistency & flow rate
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

28. The _____ must get the same amount of fiber spread evenly across the headbox
Wire
Manifold
Refining
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry