Moulding Techniques Quiz for Students

What is the primary function of the injection moulding process?

• To create hollow plastic parts

• To produce solid plastic parts with complex shapes

• To form plastic sheets

• To recycle plastic waste

Which of the following is a key advantage of extrusion techniques?

• Ability to produce complex 3D shapes

• High production speed for continuous profiles

• Low initial setup cost

• Minimal material waste

In transfer moulding, what is the primary purpose of the transfer pot?

• To cool the moulded part

• To preheat the material

• To transfer the material into the mould cavity

• To eject the finished product

Which material is commonly used in blow moulding for making bottles?

• Polyethylene terephthalate (PET)

• Polyvinyl chloride (PVC)

• Polystyrene (PS)

• Polypropylene (PP)

What is the typical temperature range for the injection moulding process?

• 50-100°C

• 150-300°C

• 300-450°C

• 450-600°C

Which of the following is a common product made using extrusion techniques?

• Plastic bottles

• Plastic pipes

• Plastic toys

• Plastic bags

What is a significant disadvantage of transfer moulding?

• High material waste

• Limited to simple shapes

• High tooling costs

• Slow production rate

Which of the following is a characteristic of blow moulding?

• Produces solid parts

• Uses a preform or parison

• Requires high pressure

• Limited to thermosetting plastics

What is the role of the screw in an extrusion machine?

• To cool the material

• To mix and melt the material

• To cut the material

• To eject the finished product

In injection moulding, what is the purpose of the clamping unit?

• To inject the material into the mould

• To hold the mould closed during injection

• To cool the moulded part

• To eject the finished product