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Paper Science

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Answer 28 questions in 15 minutes.
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Match each statement with the correct term.
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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. Basis Weight
1) Open 2) Air- padded 3) Hydraulic
Refining
Manifold (distributor) & the actual headbox
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

2. The _____ must get the same amount of fiber spread evenly across the headbox
Manifold
(Wet tensile x 100 %)/Dry tensile
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

3. What does the headbox do?
Delivers stock onto the wire
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
The solids (dry) fraction of a papermaking slurry or pulp sample

4. Other names for the headbox approach system
Basis weight valve
1) Blending and furnish control 2) Control of consistency 3) Refining
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

5. What are the types of press rolls?

6. Furnish
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
The component makeup (recipe) of the sheet

7. Wet strength formula
Manifold (distributor) & the actual headbox
Refining
Basis weight valve
(Wet tensile x 100 %)/Dry tensile

8. What are the basic categories/types of additives used for papermaking?
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
The solids (dry) fraction of a papermaking slurry or pulp sample
1) Blending and furnish control 2) Control of consistency 3) Refining

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

10. Refining reduces the _______ of the stock
Drainage rate (freeness)
The component makeup (recipe) of the sheet
1) Open 2) Air- padded 3) Hydraulic
Manifold (distributor) & the actual headbox

11. The headbox can be adjusted to control what?
1) Gravity section 2) Vacuum section 3) Press section
Wire
(Wet tensile x 100 %)/Dry tensile
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

12. Most modern refining is done using _____
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
(Wet tensile x 100 %)/Dry tensile
1) Gravity section 2) Vacuum section 3) Press section
Disk refiners

13. What are the main forces used to remove water on a paper machine wet end?
The solids (dry) fraction of a papermaking slurry or pulp sample
When refining pulverizes the primary and outer secondary layers of the fiber wall
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

14. 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
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

15. The headbox must distribute the stock evenly onto the ____
Wire
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
Rolling friction between surfaces

16. The 'white water loop'
All water used to dilute the thick stock is recovered from the wet end and used to dilute more stock
Drainage rate (freeness)
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

17. How are papermaking fines produced?
1) Dose 2) Dilute 3) Disperse 4) Distribute 5) Dewater 6) Dry
When refining pulverizes the primary and outer secondary layers of the fiber wall
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

18. The ____ is the 'gatekeeper' - it sets the basis weight of the sheet
(Wet tensile x 100 %)/Dry tensile
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute
Basis weight valve
Gets stock into the headbox

19. Strong - smooth - printable paper CANNOT be made without the use of _____
Wire
Refining
When refining pulverizes the primary and outer secondary layers of the fiber wall
1) Open 2) Air- padded 3) Hydraulic

20. What are the three main types of paper machine wet ends?
The solids (dry) fraction of a papermaking slurry or pulp sample
Rolling friction between surfaces
1) Gravity section 2) Vacuum section 3) Press section
The component makeup (recipe) of the sheet

21. In order to control the basis weight of the sheet - the ____ and _____ of the streams must be measured and controlled
Gets stock into the headbox
Consistency & flow rate
Disk refiners
Refers to the weight per unit surface area (one side) of a paper sheet and is critical quality attribute

22. What are the key functions of the headbox approach system?
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
Disk refiners
(Wet tensile x 100 %)/Dry tensile

23. 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) Blending and furnish control 2) Control of consistency 3) Refining
Gets stock into the headbox

24. Refining is done via ___________
Rolling friction between surfaces
Manifold (distributor) & the actual headbox
1) Blending and furnish control 2) Control of consistency 3) Refining
When refining pulverizes the primary and outer secondary layers of the fiber wall

25. What does the manifold do?
1) Gravity section 2) Vacuum section 3) Press section
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
Gets stock into the headbox

26. Three basic parts of the stock preparation area are...
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
Refining
1) Overall stock flow 2) Angle of flow 3) Speed of flow 4) Amount of flow at different points across the machine

27. The headbox is actually made up of the _____ and the ______
Rolling friction between surfaces
Manifold (distributor) & the actual headbox
1) The wet end flow loop 2) The white water recirculation loop 3) The basis weight control loop
1) Gravity and light vacuum 2) Heavy vacuum 3) Mechanical pressure 4) Heat

28. 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
(Wet tensile x 100 %)/Dry tensile
Basis weight valve
Drainage rate (freeness)

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Test your basic knowledge |

Paper Science

Search BasicVersity Tests

Browse BasicVersity

3d Computer Modeling

Actionscript

Adobe Flash

Adobe Illustrator

Adobe Illustrator Shortcuts

Adobe Indesign Publishing

Adobe Photoshop CS 2 - CS 3

Adobe Photoshop CS 5

Adobe Photoshop CS 5 Keyboard Shortcuts

Adobe Photoshop Graphic Design

Adobe Photoshop Tools And Commands

Adobe Premiere Keyboard Shortcuts

Adobe Premiere Pro

After Effects Keyboard Shortcuts

Agile Development

Agile Scrum Methodology

Ajax

Android Programming

Animation

Asp.net Programming