Test your basic knowledge |

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. The _____ must get the same amount of fiber spread evenly across 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
Manifold (distributor) & the actual headbox
1) Open 2) Air- padded 3) Hydraulic
Manifold

2. How are papermaking fines produced?
The component makeup (recipe) of the sheet
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Open 2) Air- padded 3) Hydraulic
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

3. Basis Weight
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
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

4. The 6 D's of Papermaking
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
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
Refining

5. Refining is done via ___________
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Rolling friction between surfaces

6. Three basic parts of the stock preparation area are...
Consistency & flow rate
Rolling friction between surfaces
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

7. The headbox is actually made up of the _____ and the ______
Manifold (distributor) & the actual headbox
Wire
Basis weight valve
Rolling friction between surfaces

8. Furnish
The component makeup (recipe) of the sheet
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Manifold
Wire

9. What are the main forces used to remove water on a paper machine wet end?
Consistency & flow rate
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
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

10. What does the headbox do?
Drainage rate (freeness)
Gets stock into the headbox
Delivers stock onto the wire
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

11. Most modern refining is done using _____
Disk refiners
Gets stock into the headbox
1) Gravity section 2) Vacuum section 3) Press section
Basis weight valve

12. Strong - smooth - printable paper CANNOT be made without the use of _____
Refining
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
Basis weight valve

13. The headbox must distribute the stock evenly onto the ____
The component makeup (recipe) of the sheet
Wire
Drainage rate (freeness)
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

14. Wet strength formula
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) Gravity section 2) Vacuum section 3) Press section
Manifold
(Wet tensile x 100 %)/Dry tensile

15. 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
(Wet tensile x 100 %)/Dry tensile
Manifold
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

16. What does the manifold do?
1) Blending and furnish control 2) Control of consistency 3) Refining
Drainage rate (freeness)
Wire
Gets stock into the headbox

17. Consistency
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 solids (dry) fraction of a papermaking slurry or pulp sample
Consistency & flow rate
The component makeup (recipe) of the sheet

18. Refining reduces the _______ of the stock
Drainage rate (freeness)
Manifold
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

19. The 'white water loop'
The solids (dry) fraction of a papermaking slurry or pulp sample
Rolling friction between surfaces
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry

20. What are the key functions of the headbox approach system?
The component makeup (recipe) of the sheet
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Disk refiners

21. The headbox can be adjusted to control what?
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Drainage rate (freeness)
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

22. What are the three types of headboxes?
Gets stock into the headbox
1) Open 2) Air- padded 3) Hydraulic
Refining
Wire

23. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
Basis weight valve
(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
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

24. What are the three main types of paper machine wet ends?
Manifold
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Gravity section 2) Vacuum section 3) Press section
Refining

25. What are the types of press rolls?

26. Refining (Beating)
Refining
The component makeup (recipe) 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
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

27. What are the basic categories/types of additives used for papermaking?
Rolling friction between surfaces
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
Manifold (distributor) & the actual headbox

28. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Consistency & flow rate
Drainage rate (freeness)
Refining
1) Blending and furnish control 2) Control of consistency 3) Refining