Question

The addition of aluminium to the packaging materials for better conduction in microwave is known as __________

• A. Susceptors
• B. Docking
• C. Coating
• D. Lamination

Hint:

Remember that susceptors are designed to create a "conventional oven" effect (browning and crisping) for foods like popcorn, pizza, and french fries when cooked in a microwave. The keyword is converting microwave energy to thermal energy.

Answer 1

The Correct Option is A

Step 1: Concept Overview:
Microwave ovens heat food by exciting water molecules with microwave radiation.
This efficient heating method doesn't typically brown or crisp surfaces like conventional ovens that use conduction and convection.
Special packaging materials address this limitation.
Step 3: In-Depth Explanation:
A susceptor, used in microwave packaging, absorbs microwave energy and transforms it into thermal energy (heat).
It's usually a thin metal layer (e.g., aluminum particles) vacuum-deposited onto plastic film (e.g., PET).
This film is then laminated to paper or paperboard.
In a microwave, the metal layer rapidly heats up, cooking the food via conduction and radiation, creating browning and crisping similar to conventional ovens.
Docking prevents dough blistering. While Coating and Lamination are packaging processes, the relevant technology here is the susceptor.
Step 4: Conclusion:
Using aluminum in packaging to improve heat conduction in a microwave is called a susceptor. Therefore, option (A) is correct.