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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. Strong - smooth - printable paper CANNOT be made without the use of _____
Refining
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
Gets stock into the headbox

2. How are papermaking fines produced?
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Rolling friction between surfaces
1) Gravity section 2) Vacuum section 3) Press section

3. What are the key functions of the headbox approach system?
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
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
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
Rolling friction between surfaces

4. The _____ must get the same amount of fiber spread evenly across the headbox
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Manifold
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Refining

5. Furnish
The component makeup (recipe) of the sheet
Refining
Drainage rate (freeness)
Delivers stock onto the wire

6. The headbox can be adjusted to control what?
Basis weight valve
The solids (dry) fraction of a papermaking slurry or pulp sample
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) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

7. Refining is done via ___________
When refining pulverizes the primary and outer secondary layers of the fiber wall
Rolling friction between surfaces
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

8. Wet strength formula
Manifold
(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
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

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

10. The headbox is actually made up of the _____ and the ______
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

11. The headbox must distribute the stock evenly onto the ____
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Wire
The component makeup (recipe) of the sheet
Basis weight valve

12. What are the types of press rolls?

13. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
Drainage rate (freeness)
Basis weight valve
1) Gravity section 2) Vacuum section 3) Press section
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

14. Three basic parts of the stock preparation area are...
1) Gravity section 2) Vacuum section 3) Press section
(Wet tensile x 100 %)/Dry tensile
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) Blending and furnish control 2) Control of consistency 3) Refining

15. Most modern refining is done using _____
(Wet tensile x 100 %)/Dry tensile
The component makeup (recipe) of the sheet
Delivers stock onto the wire
Disk refiners

16. 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
Delivers stock onto the wire
Manifold (distributor) & the actual headbox
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat

17. What are the three types of headboxes?
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
1) Open 2) Air- padded 3) Hydraulic

18. What does the headbox do?
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Wire
Delivers stock onto the wire
1) Gravity section 2) Vacuum section 3) Press section

19. What are the basic categories/types of additives used for papermaking?
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
Disk refiners
1) Blending and furnish control 2) Control of consistency 3) Refining

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

21. Refining reduces the _______ of the stock
Drainage rate (freeness)
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
When refining pulverizes the primary and outer secondary layers of the fiber wall

22. 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
Gets stock into the headbox
1) Open 2) Air- padded 3) Hydraulic
Manifold (distributor) & the actual headbox

23. 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) 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
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

24. The 6 D's of Papermaking
1) Blending and furnish control 2) Control of consistency 3) Refining
Manifold (distributor) & the actual headbox
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Basis weight valve

25. Basis Weight
(Wet tensile x 100 %)/Dry tensile
Disk refiners
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
When refining pulverizes the primary and outer secondary layers of the fiber wall

26. 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
Manifold
Refining
Manifold (distributor) & the actual headbox

27. What are the three main types of paper machine wet ends?
Disk refiners
1) Gravity section 2) Vacuum section 3) Press section
Rolling friction between surfaces
1) Blending and furnish control 2) Control of consistency 3) Refining

28. The 'white water loop'
Refining
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine