PKSC 4300 EXAM III
1. roller, knife, curtain: What are the three coating methods when applying liquids?
2. extrusion: What type of coating method applies when the coating is molten?
3. aluminum, silicon oxide: What are two materials that you cannot extrude for coatings?
4. liquids vaporize at lower temperatures under vacuum: What is the main benefit to coating
a substrate under vacuum?
5. vacuum depositing a thin layer of aluminum on the surface of a web: What is
metallization?
6. vacuum metallizer: What is depicted in this image?
7. PET, OPP, Nylon, PE or non-oriented PP: What are the four most common films to be metallized?
8. plasma enhanced chemical vapor deposition: What is PECVD?
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, 9. benefits: cost, less material. Drawbacks: weaker barrier, expensive equip-
ment: What are two benefits, and two drawbacks to using a metalized film as opposed to using a foil laminate?
10. Both improve barrier, and require vacuum chamber for manufacturing. SiOx
is clear, metal detector friendly, but brittle compared to AlOx: What are two similarities
and differences between AlOx and SiOx films?
11. drying: What is the process of evaporating the solvent (or other liquid carrier) from a coating, ink or adhesive
in a controlled way?
12. heat, mass: Drying consists of transfer (warming the coating), and transfer
(removing solvents)
13. laminar flow, limited mixing between layers, unfavorable: What is the flow that moves
in "layers"? What does this lead to when mixing layers? Is this favorable or unfavorable when drying/evaporating
solvents?
14. turbulent flow, improved mixing, favorable: What is a flow that moves in random patterns?
What does this lead to when mixing layers? Is this favorable or unfavorable when drying/evaporating solvents?
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1. roller, knife, curtain: What are the three coating methods when applying liquids?
2. extrusion: What type of coating method applies when the coating is molten?
3. aluminum, silicon oxide: What are two materials that you cannot extrude for coatings?
4. liquids vaporize at lower temperatures under vacuum: What is the main benefit to coating
a substrate under vacuum?
5. vacuum depositing a thin layer of aluminum on the surface of a web: What is
metallization?
6. vacuum metallizer: What is depicted in this image?
7. PET, OPP, Nylon, PE or non-oriented PP: What are the four most common films to be metallized?
8. plasma enhanced chemical vapor deposition: What is PECVD?
1/4
, 9. benefits: cost, less material. Drawbacks: weaker barrier, expensive equip-
ment: What are two benefits, and two drawbacks to using a metalized film as opposed to using a foil laminate?
10. Both improve barrier, and require vacuum chamber for manufacturing. SiOx
is clear, metal detector friendly, but brittle compared to AlOx: What are two similarities
and differences between AlOx and SiOx films?
11. drying: What is the process of evaporating the solvent (or other liquid carrier) from a coating, ink or adhesive
in a controlled way?
12. heat, mass: Drying consists of transfer (warming the coating), and transfer
(removing solvents)
13. laminar flow, limited mixing between layers, unfavorable: What is the flow that moves
in "layers"? What does this lead to when mixing layers? Is this favorable or unfavorable when drying/evaporating
solvents?
14. turbulent flow, improved mixing, favorable: What is a flow that moves in random patterns?
What does this lead to when mixing layers? Is this favorable or unfavorable when drying/evaporating solvents?
2/4
