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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. 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
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
Delivers stock onto the wire

2. How are papermaking fines produced?
Manifold (distributor) & the actual headbox
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
Manifold

3. What does the headbox do?
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Delivers stock onto the wire
(Wet tensile x 100 %)/Dry tensile
Disk refiners

4. Wet strength formula
Rolling friction between surfaces
(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
Wire

5. 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
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
Manifold

6. The headbox is actually made up of the _____ and the ______
1) Blending and furnish control 2) Control of consistency 3) Refining
Disk refiners
Manifold (distributor) & the actual 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

7. Furnish
Rolling friction between surfaces
The component makeup (recipe) of the sheet
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Open 2) Air- padded 3) Hydraulic

8. Refining is done via ___________
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
Rolling friction between surfaces

9. Consistency
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
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
Consistency & flow rate

10. 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
Consistency & flow rate
Refining
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

11. The headbox must distribute the stock evenly onto the ____
Delivers stock onto the wire
Wire
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

12. The _____ must get the same amount of fiber spread evenly across the headbox
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
1) Gravity section 2) Vacuum section 3) Press section
Manifold
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

13. What are the main forces used to remove water on a paper machine wet end?
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Rolling friction between surfaces
Wire
1) Open 2) Air- padded 3) Hydraulic

14. What are the types of press rolls?

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15. What are the three main types of paper machine wet ends?
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Rolling friction between surfaces
1) Gravity section 2) Vacuum section 3) Press section
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

16. 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
Disk refiners
Manifold
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

17. 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
Consistency & flow rate
Gets stock into the headbox
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

18. What are the three types of headboxes?
(Wet tensile x 100 %)/Dry tensile
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
1) Open 2) Air- padded 3) Hydraulic

19. What are the basic categories/types of additives used for papermaking?
Manifold (distributor) & the actual headbox
Manifold
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

20. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
Basis weight valve
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
Gets stock into the headbox

21. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Consistency & flow rate
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Gets stock into the headbox

22. Most modern refining is done using _____
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Manifold (distributor) & the actual headbox
Disk refiners
1) Gravity section 2) Vacuum section 3) Press section

23. The 'white water loop'
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Manifold
Rolling friction between surfaces
The component makeup (recipe) of the sheet

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

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

26. Basis Weight
Gets stock into the headbox
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
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

27. Refining reduces the _______ of the stock
Gets stock into the headbox
Delivers stock onto the wire
Rolling friction between surfaces
Drainage rate (freeness)

28. The 6 D's of Papermaking
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Basis weight valve
Rolling friction between surfaces
Wire