WorksheetsInjection Moulding of Plastics Quiz
Total questions: 15
Worksheet time: 8mins
What materials can be used in the injection moulding process?
Cotton, wool, silk, and leather
Wood, metal, glass, and ceramic
Paper, cardboard, rubber, and foam
Polystyrene, nylon, polypropylene, and polythene
What type of plastics are used in injection moulding?
Thermoplastics
Thermosetting plastics
Biodegradable plastics
Elastomers
What happens to the plastic granules in the hopper?
They are mixed with other materials
They are cooled down
They are immediately melted
They are stored until needed
What is the role of the heater in the injection moulding process?
To cool the mould
To shape the plastic into a sheet
To mix the plastic with additives
To heat the tube and melt the plastic granules
What does the screw thread do in the injection moulding process?
It cuts the plastic into pieces
It pushes the granules along the heater section
It cools the plastic
It colors the plastic
What happens to the plastic once it is melted in the injection moulding process?
It is cooled immediately
It is discarded
It is mixed with other plastics
It is forced into a mould
What is the final step in the injection moulding process?
The mould is discarded
The plastic is painted
The plastic is reheated
The mould opens and the unit is removed
What is an example of a product made using injection moulding?
Metal spoon
Glass bottle
Wooden chair
DVD/CD storage unit
What is the state of the plastic when it is forced into the mould?
Powder
Gas
Liquid
Solid
What happens to the plastic in the mould?
It evaporates
It expands and breaks the mould
It cools into the shape of the mould
It changes color
Which of the following is NOT a thermoplastic?
Nylon
Polystyrene
Polypropylene
Wood
What is the purpose of the motor in the injection moulding process?
To paint the product
To heat the plastic
To cool the mould
To turn the screw thread
What is the initial form of the plastic used in injection moulding?
Granules of plastic powder
Plastic sheets
Liquid plastic
Solid blocks
What is the main characteristic of thermoplastics?
They can be reshaped when heated
They are always rigid
They cannot be recycled
They are biodegradable
What is the function of the mould in the injection moulding process?
To heat the plastic
To store the plastic
To shape the melted plastic
To mix the plastic with additives
