DTAQA

Why is bio-batch often added to a polymer used in the manufacture of single-use carrier bags?

• Allows for the bag to be re-used

• Allows for the bag to be re-cycled

• Aids accelerate the breakdown of the bag after its disposal

• Makes the bag food safe.

State TWO reasons why Danish Oil is used as a surface finish for timber.

More than one correct answer.

• It is water and moisture resistant

• Doesn't need regular maintenance

• Penetrates surface of timber, creating a hard wearing and durable finish.

• Smoothens the wood grain

Why is concrete a suitable material for manufacture of a table tennis table?

More than one correct answer.

• Has a very high tensile strength

• Hard material that can be polished to provide smooth & hardwearing surface.

• It is affordable compared to other materials.

• Can be molded on site, removing the need for transport

What is the purpose of risk assessment?

• To ensure that an employee doesn't cause the firm trouble.

• To identify activities, or actions that are deemed too risky or where severity of injury is high.

• So that the firm doesn't have to deal with insurance.

• To identify actions that only seem threatening.

Why would a phosphorescent pigment be used in indoor emergency signage?

More than one correct answer.

• To make the signage look more aesthetically pleasing.

• Signage can be relocated without damage to structures or wiring.

• To improve the visibility of the signage in low light environment e.g fire or power-cut

• No need to permanently light the sign with electricity, thus saving on utility costs.

Why would silicone be a suitable material for an oven mitt?

More than one correct answer

• Has high tear strength

• Flexible and elastic material. Allow users to easily grip trays etc.

• Has non-slip surface texture which will prevent accidental dropping.

• Very affordable.

How can the data gained from EPOS be used?

More than one correct answer.

• Data gain may influence timing of product launch based on spending/demand patterns.

• EPOS data can ensure that satisfactory level of stock is maintained.

• EPOS systems can be linked to customer addresses in order to reduce the need for printed bills.

• Product sales can be monitored and patterns or decline in sales countered by re-development of product or promotions.

What are the advantages of Injection Molding?

More than one correct answer.

• Low cost per unit.

• High productive efficiency. Once you have developed the molds, the process is extremely fast with cycle times as short as 10 seconds

• Cheap design change costs.

• Low start up costs. Good fit for low-volume production.

What are the disadvantages of Blow Molding?

More than one correct answer.

• The process is limited to hollow parts only.

• Limited to thermoplastics (rotational molding can utilize thermosets)

• Very high tooling costs.

• Slow production rates.

Define Malleability.

• Material's ability to be permanently deformed or shaped by impact, pressing or rolling without cracking.

• Material's ability to be deformed and upon release of force return to original shape.

• Material's ability to withstand high levels of heat.

• Material's ability to absorb impact without shattering or breaking apart.