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

2. Consistency
Gets stock into the headbox
When refining pulverizes the primary and outer secondary layers of the fiber wall
The solids (dry) fraction of a papermaking slurry or pulp sample
Drainage rate (freeness)

3. Three basic parts of the stock preparation area are...
Wire
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
(Wet tensile x 100 %)/Dry tensile
1) Blending and furnish control 2) Control of consistency 3) Refining

4. The 'white water loop'
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

5. 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
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
Manifold
Consistency & flow rate

6. Wet strength formula
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
Disk refiners
(Wet tensile x 100 %)/Dry tensile

7. Most modern refining is done using _____
1) Blending and furnish control 2) Control of consistency 3) Refining
Disk refiners
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
Delivers stock onto the wire

8. Basis Weight
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Wire
Delivers stock onto the wire

9. The _____ must get the same amount of fiber spread evenly across the headbox
Gets stock into the headbox
(Wet tensile x 100 %)/Dry tensile
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Manifold

10. 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
Basis weight valve
Gets stock into the headbox
Consistency & flow rate

11. What does the headbox do?
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
The solids (dry) fraction of a papermaking slurry or pulp sample
Consistency & flow rate

12. What are the three types of headboxes?
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Open 2) Air- padded 3) Hydraulic
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
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

13. How are papermaking fines produced?
1) Blending and furnish control 2) Control of consistency 3) Refining
Disk refiners
When refining pulverizes the primary and outer secondary layers of the fiber wall
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

14. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
Basis weight valve
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

15. 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
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
The solids (dry) fraction of a papermaking slurry or pulp sample

16. What are the types of press rolls?

17. The headbox can be adjusted to control what?
Manifold
1) Blending and furnish control 2) Control of consistency 3) Refining
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

18. Furnish
The component makeup (recipe) of the sheet
Refining
Gets stock into the headbox
When refining pulverizes the primary and outer secondary layers of the fiber wall

19. What does the manifold do?
1) Open 2) Air- padded 3) Hydraulic
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
Rolling friction between surfaces

20. Refining is done via ___________
Rolling friction between surfaces
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
(Wet tensile x 100 %)/Dry tensile
The component makeup (recipe) of the sheet

21. What are the key functions of the headbox approach system?
Rolling friction between surfaces
(Wet tensile x 100 %)/Dry tensile
Refining
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

22. Other names for the headbox approach system
1) Blending and furnish control 2) Control of consistency 3) Refining
1) Plain 2) Blind drilled 3) Grooved ('vented') 4) Vacuum (suction) press
1) Open 2) Air- padded 3) Hydraulic
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop

23. The headbox must distribute the stock evenly onto the ____
Wire
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
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock

24. The 6 D's of Papermaking
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
(Wet tensile x 100 %)/Dry tensile
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

25. Refining reduces the _______ of the stock
The component makeup (recipe) of the sheet
Refining
Drainage rate (freeness)
When refining pulverizes the primary and outer secondary layers of the fiber wall

26. The headbox is actually made up of the _____ and the ______
Manifold (distributor) & the actual headbox
Delivers stock onto the wire
Consistency & flow rate
The component makeup (recipe) of the sheet

27. Strong - smooth - printable paper CANNOT be made without the use of _____
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Manifold
Refining
Consistency & flow rate

28. What are the main forces used to remove water on a paper machine wet end?
Disk refiners
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
(Wet tensile x 100 %)/Dry tensile
Manifold