Blow Moulding (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What type of plastics are used exclusively in blow moulding?
What type of plastics are used exclusively in blow moulding?
Thermoplastics
What is the key characteristic of products made by blow moulding?
What is the key characteristic of products made by blow moulding?
They are hollow
What is a parison in the blow moulding process?
What is a parison in the blow moulding process?
A hollow tube of heated thermoplastic
Why are thermoplastics essential for blow moulding?
Why are thermoplastics essential for blow moulding?
They can be reheated and reshaped
What happens when the split mould closes around the parison?
What happens when the split mould closes around the parison?
The bottom end is pinched to seal it
What forces the soft plastic to expand in blow moulding?
What forces the soft plastic to expand in blow moulding?
Compressed air pressure
Which thermoplastic is used for soft drink bottles?
Which thermoplastic is used for soft drink bottles?
PET
What key advantage does blow moulding provide for container walls?
What key advantage does blow moulding provide for container walls?
Consistent wall thickness
Which of these is a common blow moulding application?
Which of these is a common blow moulding application?
Detergent bottles
Why can't thermosetting plastics be used in blow moulding?
Why can't thermosetting plastics be used in blow moulding?
They cannot be reheated and reshaped
What happens in the final step of blow moulding?
What happens in the final step of blow moulding?
Plastic cools, mould opens, product removed
What is the blow moulding process compared to?
What is the blow moulding process compared to?
Blowing up a balloon