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Pksc 4300 Exam 3 Questions And Correct Detailed Answers With Complete Solutions | Graded A+

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Exam of 14 pages for the course PKSC 4300 at PKSC 4300 (PKSC 4300 Exam 3)

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PKSC 4300 Exam 3


1. Why coat for flexible packaging?: Surface decoration


Surface protection

Barrier
Primer for adhesion (other films & coatings/extrudates)
Sealants
Modify surface properites

2. Coating types: Liquid


Extrusion

Vacuum

3. Coatings that require drying: Solution (dissolving)


Emuslion (held in solution)

Suspension (dispersed0

4. Coatings requiring no drying: 100% solids


5. Coating Draw Down:



1/6

, 6. Applied weight is determined by & & : % solids, density, volume applied


7. & control wet weight applied: Volume & density


8. % solids in wet weight reults in : dry weight applied


9. The or meters the coating: knife or rod


10. Non-roller metering options: Knife over roller


Air knife
Mayer Rod

11. Knife over roll coating: Casting of films on carrier substrates


Coating of emulsions, solutions, plastisols, etc




12. Air knife: Aqueus emulsions or encapsulated coatings


Highly depending on control of coating properties

Low shear requirements and specific viscosity ranges


2/6

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