GATE 2022 PI – Question 16
Manufacturing Processes I · Polymers and Composites · 1 mark · Multiple choice
In injection blow molding of plastic beverage bottles, blowing is accomplished using what medium?
- Hot water
- Hot air
- Hot oil
- Alcohol
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Show answer and explanation
Correct answer: (B) Hot air
Explanation
Pressurized air inflates the heated preform against the mold cavity. Among the supplied media this is **hot air, B**.
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