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Food Packaging Practice Test: Thermoplastic Polymers Properties & Processing
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Avg score: 71% Most missed: “The temperature of orientation is ______ the flow temperature and _____ the glas…”
Thermoplastic polymers are polymers that can be softened by heating and then cooled and hardened. They can be re-melted and reused several times without changing their chemical properties.  Some properties of thermoplastic polymers: Semi-rigid, Translucent, Tough, Weatherproof, Good chemical resistance, Low water absorption, Low cost,  Easily processed by most methods  Some examples of thermoplastic polymers: Polyethylene, Polypropylene, Polyvinyl chloride, Polystyrene, Polybenzimidazole, Acrylic, Nylon, Teflon.  Some applications of thermoplastic polymers: Squeeze bottles, Toys, Carrier... Show more
Food Packaging Practice Test: Thermoplastic Polymers Properties & Processing
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25 Questions

1. The term OTR related to packaging films stands for ________
2. The term WVTR related to packaging films stands for ________
3. Compression ratios for single screw extrusion should lie between ____ and ____
4. In the process of surface treatment before lamination or coating, the surface energy is ______
5. EBM produces smoother finished parts which are scrap free, when compared to IBM.
6. Which of the following optical properties cannot be measured by spectrophotometer?
7. LDPE is generally irradiated before moulding into film.
8. Which of the following thermoplastics is transparent?
9. Which of the following processes is done to remove surface contaminants?
10. What is the correct order of their tensile strength?
11. Which of the following CVD technique is a flame based technique?
12. Films with glass transition temperature below room temperature have more crystallisation rate.
13. In general, temperatures for melt phase thermoformed Polypropylene is greater than SPPF Polypropylene.
14. Which of the following is not used as a stretch film?
15. Which of the plastics cannot be extrusion blown?
16. For Flame Treatment prior to laminating and coating, the temperature time combination is _____
17. The film after annealing is called ________
18. Which of the following material is not thermoformed?
19. Find the odd one.
20. What is the unit of coefficient of Diffusion coefficient?
21. ASTM stands for _____
22. APET is stable till 230°C.
23. Arrange the following in correct order of OTR
24. The temperature of orientation is ______ the flow temperature and _____ the glass transition temperature.
25. Co-extrusion uses adhesives for binding between two layers.