Y11 PPE 1 Revision

Question 1

What is ‘Design for disassembly’?

Answer 1

Where a new product is designed so it can be easily taken apart at the end of its lifetime - so it parts and materials can be reused or recycled.

Question 2

What is planned obsolescene?

Answer 2

Where the product is designed to have a short lifespan and become useless quickly.

Question 3

Why can the continuous development of new products be bad?

Answer 3

Because it can encourage consumers to replace existing products with new ones, which causes a carbon footprint.

The new products and packaging being eventually disposed of can result in the increased usage of finite resources and environmental damage.

Question 4

What are the 6R’s?

Answer 4

Repair

Re-use

Recycle

Rethink

Reduce

Refuse

Question 5

What is the weight of paper and board measured in?

Answer 5

gsm - (grams per square metre)

Question 6

What does solid white board have?

Answer 6

A high quality bleached surface, which allows for printing.

Question 7

What is corrugated card made up of?

Answer 7

A fluted inner core that is ideal for printing, and adds strength and rigity.

Question 8

What does duplex board have?

Answer 8

A different colour and texture on each side, where one side is smooth for printing.

Question 9

Where do softwoods grow?

Answer 9

Colder climates and are fast growing - makes them cheap and readily accessible.

Question 10

Where do hardwoods grow?

Answer 10

Warm climates and are slow growing - more expensive than softwood.

Question 11

What do ferrous metals contain?

Answer 11

Iron

Question 12

What is often applied to ferrous metals to prevent rusting?

Answer 12

Protective coatings such as paint.

Question 13

Do non-ferrous metals rust?

Answer 13

No

Question 14

What are the two types of plastics (polymers)?

Answer 14

Thermoforming and thermosetting plastics.

Question 15

What are properties of thermoforming plastics?

Answer 15

-Don’t resist heat well; easily formed into different shapes by heating, melting and remoulding.

-Easy to recycle.

Question 16

What are the properties of acrylic?

Answer 16

-Hard, stiff and shiny.

-Weather resistant

-Used to make signs (Fire exit signs)

Question 17

What are the properties and uses of high density polyethylene?

Answer 17

-Stiff,strong but lightweight.

-Used for baskets, folding chairs.

Question 18

What are properties of thermosetting plastics?

Answer 18

-Resistant to heat and fire

-When moulded, become permanently hard and rigid.

-Non recyclable

Question 19

What do smart materials do?

Answer 19

Change their properties in response to stimuli.

Question 20

What are shape memory alloys?

Answer 20

Alloys that remember their original shape. (Can be returned to original shape when heated above a certain temperature).

Question 21

What do photochromic pigments do?

Answer 21

Change colour reversibly in response to light.

Question 22

What are thermochromic pigments and inks used in?

Answer 22

Colour changing products - They react to temperature. (Baby feeding spoons, mugs - denisdaily)

When the temperature changes the product changes colour, then changes back when the object returns to it’s original temperature.

Question 23

Why should card based food packaging be printable on?

Answer 23

So the customer can see the advertising and nutritional information for what they are buying.

Question 24

Why does corrugated card have to be waterproof and airtight?

Answer 24

To prevent the food inside from going bad.

Question 25

Why is corrugated card used for pizza packaging?

Answer 25

It is strong enough to withstand other boxes being stacked ontop of it, and is thick so is good at retaining heat, keeping the pizza warm.

Question 26

What are standard components?

Answer 26

Parts that come ready-made for use.

Question 27

What do split pins do?

Answer 27

Join pieces of paper and card together as movable joints.

Question 28

What do laser cutting machines use to cut out designs accuratley?

Answer 28

CAD (Computer aided manufacture)

Question 29

What is die cutting used for?

Answer 29

Cutting and creasing nets, to produce nets for packaging .

Question 30

What happens in die cutting?

Answer 30

The die is mounted on a strong plywood base and pressed down onto the card.

Question 31

What is an advantage and a disadvantage of die-cutting?

Answer 31

You can cut though many different materials at a time, so you can make lots of nets very quickly.

It is expensive.

Question 32

What does lithography and offset lithography use?

Answer 32

Oily ink and water, since they don’t mix.

Question 33

How is the image printed on in lithography?

Answer 33

The image is printed from the metal plate onto a series of rollers (cylinders), which is then reversed or corrected as it is printed onto paper.

Question 34

How is the image printed on in offset lithography?

Answer 34

The image is printed onto a rubber ‘blanket’ cylinder which squeezes away the water and transfers the ink to the paper.

Question 35

Why is lithography and offset lithography good?

Answer 35

They are fast ways of printing, gives you a high-quality product and are great for print runs of 1000 copies or more (books, magazines, newspapers).

Question 36

What are the four colours used in layers by digital printers?

Answer 36

Cyan (C), Magenta (M), Yellow (Y), Black (K).

CMYK

Question 37

What is microencapsulation?

Answer 37

Solids, liquids or gasses that are sealed in tiny capsules, and can be released at controlled rates and under controlled conditions.

Question 38

Whats are the active ingredients used in microencapsulation?

Answer 38

Thermochromic dyes, antibacterial material, pesticides, perfumes.

Question 39

What products is microencapsulation used in?

Answer 39

Scratch stickers, fragrances and deoderants.

Question 40

Describe conductive fabrics and threads.

Answer 40

E-textiles allow electricity to travel along special threads which are either woven or sewn into fabrics.

Question 41

What are conductive fabrics used for?

Answer 41

Gloves you can use your phone with, suits in fencing.