Plastics

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Plastics

• Lesson objective to be able to identify common
  plastics

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What are plastics made from

• Are plastics a new or old material area?
• What are they made from are they made from the
  following?
• Amber the mineral
• Rubber
• Latex
• Tree resins
• Coal
• Gas
• Oils

Lesson objective to be able to identify common
plastics
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Natural plastics are
Rubber is a natural occurring polymer.
The problems associated with plastics - For years
we've filled our landfills with plastics and
storage containers that will, in essence, sit and
not rot. The scientific word for "rotting" is
biodegradation, the process by which organic
materials are broken down by other living things.
Name one positive move that supermarkets and
chains stores have done to reduce the use of
plastics
These applesauce cups are made out of cornstarch,
which means they can biodegrade in soil, compost
or waste-treatment facilities within a few
months.
Lesson objective to be able to identify common
plastics
4
Thermoplastics
The term thermoplastic indicates that these
materials melt on heating and may be processed
by a variety of moulding and extrusion
techniques. It also has a memory so can be
reheated and moulded again
Lesson objective to be able to identify common
plastics
5
Thermosetting plastics
Alternately, thermosetting polymers can not be
melted or remelted.
Lesson objective to be able to identify common
plastics
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The super-material known as Kevlar is a man-made
polymer. Kevlar is used in bullet-proof vests,
strong/lightweight frames, and underwater cables
that are 20 times stronger than steel.
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• Different types of methods used to produce
  plastic products
• Task 1 write down two of these methods and
  learn about them, research on the Internet or use
  the AQA theory books, draw diagrams and label
  them
• Plastic Injection Moulds and Plastic Injection
  moulding include 1. Mould design
• 2. Precision Plastic Mould Making,3. Injection
  Mould Making,4. Casting Mould Making,5. Plastic
  Injection Mould Maker,6. Plastic Injection
  Moulding Companies,7. Two Shot Injection
  Moulding services,8. Plastic Wall Moulding
  services,9. Plastic Blow Moulding services,10.
  vacuum forming

Lesson objective to be able to identify common
plastics
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Injection Mould Making
Precision Plastic Mould
Lesson objective to be able to identify common
plastics
9
Plastic Blow Moulding
Injection Mould Making
Lesson objective to be able to identify common
plastics
10
Two Shot Injection Moulding
Lesson objective to be able to identify common
plastics
11
Two Shot Injection Moulding
www.youtube.com/watch?vyhajk_IDTUo
Plastic Wall Moulding
www.youtube.com/watch?vy2mzjExWXzo
Lesson objective to be able to identify common
plastics
12
Making GRP involves combining a thermoplastic,
such as polyester, with fibres of glass.
Reinforced plastics
Task 2 design a piece of kitchen breakfast
equipment and describe the type of moulding
method you would use. Think about what machines
we have in the DT room
Lesson objective to be able to identify common
plastics
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AfL marks out of 25

• Marks are as follows
• Design idea 3
• Rendering 2
• Different stages of the making 5
• Correct terms for equipment 5
• Correct use of the plastic used 5
• Sketching the different stages of making - 5