Food packaging

Attempt the following questions to check your understanding of the subject:

PART 1

1. Explain the following terms related to food packaging (3 mks)
   1. Hermetic seal
   2. Shatter Resistance
   3. Metallized films
2. How do packaging material enhance Traceability of foods? (2 mks)
3. State and explain three different environments (6 mks)
4. Explain the 3 categories of packaging materials (6 mks)
5. Briefly discuss the process of making 2 piece cans (3 mks)
6. Explain the difference between the following:
   1. Thermoplastics and thermoset plastics (2 mks)
   2. Condensation polymerization and Addition polymerization (2 mks)
7. Differentiate between tin plate and Electrolytic Chromium coated steel (6 mks)

PART 2

8. Explain the differences between high-density polyethylene (HDPE) and low-density polyethylene (LDPE) (10 mks)
9. State the advantageous properties of glass that make it ideal for packaging food (6 marks)
10. Differentiate between polyethelene and polyethylene terephthalate as packaging materials (4 mks)
11. Explain the following (4 mks)
    1. Modified atmospheric packaging
    2. Intelligent packaging
12. How do you manage wastes from food packaging materials in the food industry (6 mks)