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. What are the three types of headboxes?
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
1) Open 2) Air- padded 3) Hydraulic
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

2. The _____ must get the same amount of fiber spread evenly across the headbox
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Basis weight valve
Manifold
Drainage rate (freeness)

3. Most modern refining is done using _____
Disk refiners
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Blending and furnish control 2) Control of consistency 3) Refining
Refining

4. Refining (Beating)
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
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press

5. Furnish
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
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
Disk refiners

6. Consistency
Disk refiners
The solids (dry) fraction of a papermaking slurry or pulp sample
Refining
1) Gravity section 2) Vacuum section 3) Press section

7. What are the types of press rolls?

8. Refining is done via ___________
The component makeup (recipe) of the sheet
Gets stock into the headbox
1) Open 2) Air- padded 3) Hydraulic
Rolling friction between surfaces

9. Refining reduces the _______ of the stock
Drainage rate (freeness)
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
Delivers stock onto the wire
The component makeup (recipe) of the sheet

10. The headbox can be adjusted to control what?
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
The solids (dry) fraction of a papermaking slurry or pulp sample
Drainage rate (freeness)

11. What does the headbox do?
Refining
Delivers stock onto the wire
The component makeup (recipe) of the sheet
When refining pulverizes the primary and outer secondary layers of the fiber wall

12. What are the three main types of paper machine wet ends?
Consistency & flow rate
Gets stock into the headbox
1) Gravity section 2) Vacuum section 3) Press section
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. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
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
Basis weight valve

14. Other names for the headbox approach system
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Refining
Basis weight valve

15. What are the basic categories/types of additives used for papermaking?
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
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
1) Gravity section 2) Vacuum section 3) Press section

16. The headbox is actually made up of the _____ and the ______
The component makeup (recipe) of the sheet
Disk refiners
The solids (dry) fraction of a papermaking slurry or pulp sample
Manifold (distributor) & the actual headbox

17. The 'white water loop'
Manifold (distributor) & the actual headbox
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
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

18. What are the key functions of the headbox approach system?
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 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) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

19. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
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
Consistency & flow rate

20. How are papermaking fines produced?
Refining
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
When refining pulverizes the primary and outer secondary layers of the fiber wall
(Wet tensile x 100 %)/Dry tensile

21. The headbox must distribute the stock evenly onto the ____
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Wire
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Basis weight valve

22. Strong - smooth - printable paper CANNOT be made without the use of _____
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Basis weight valve
Manifold
Refining

23. Wet strength formula
(Wet tensile x 100 %)/Dry tensile
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
1) Open 2) Air- padded 3) Hydraulic

24. What does the manifold do?
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
Gets stock into the headbox
1) Open 2) Air- padded 3) Hydraulic

25. 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
Disk refiners
1) Blending and furnish control 2) Control of consistency 3) Refining
The component makeup (recipe) of the sheet

26. The 6 D's of Papermaking
1) Gravity section 2) Vacuum section 3) Press section
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
Consistency & flow rate

27. Basis Weight
(Wet tensile x 100 %)/Dry tensile
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
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

28. Three basic parts of the stock preparation area are...
Wire
Refining
1) Blending and furnish control 2) Control of consistency 3) Refining
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry