Plastic Production Quiz

What is a disadvantage of producing moulds for injection moulding?

• They allow for design flexibility.

• They can produce large quantities of plastic quickly.

• They are expensive to produce, so a large number of products need to be sold to recover the cost.

• They have low labor costs.

Which of the following is not a material listed for plastic production?

• Polyethylene

• PVC

• Glass

• Nylon

What is an advantage of using the materials listed for plastic production?

• High labor costs

• Maximum scrap

• Little finishing needed

• Inability to process a wide range of materials

What is the primary reason for using injection moulding in mass production?

• It has a very high setup cost.

• It can produce complex shapes with high precision.

• It is only suitable for producing small parts.

• It uses less material than other manufacturing processes.

Which is NOT an identifying feature of injection moulding?

• Injection point

• Ejection Point

• Sprue and Runner Marks

• Split Lines

Reorder the following

• The screw feed pushes the thermoplastic through the injection point. Injection takes place under high pressure.

• The split mould opens and component is ejected.

• Thermoplastic granules are fed from hopper to screw feed.

• Heaters around the screw feed melt the granules into almost a liquid state.