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Page 1

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Page 2

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Product Design Revision:
Plastics
There are 3 types of plastic:
· Thermoplastics- can be reheated and reshaped as they have loose monomer chains, can be recycled
and coloured pigments can be added to make it more aesthetically pleasing.
· Thermosets ­ undergo a chemical change so permanently rigid, cannot be…

Page 3

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polyethylene
Good stiffness, good chemical resistance
Crates, bottles, buckets, bowls Injection moulded LDPE 4 Low density
polyethylene
Lightweight, low stiffness and rigidity, good chemical resistance
Detergents bottles, toys, carrier bags Blow moulded
PET 1 Polyethylene
terephthalate
Moderate chemical resistance
Clothing, blow moulded bottles for beer and soft drinks, electrical sockets,…

Page 4

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Page 5

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Joining plastics:
· Plastic weld ­ a multipurpose adhesive that joins most plastics (not foamed plastic)
· Tensol 12 ­ is good for acrylic, it is quick and easy to use, if spilt marks the work, not very strong
· Rivets, nuts, bolts and machine screws can be used to…

Page 6

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Page 7

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Advantages:
· produces very complex 3D shapes
· Large numbers can be produced with consistent quality
· Metal inerts can be included
Disadvantages:
· Initial set up costs are high
· Moulds are expensive
Blow moulding
A tube of softened plastic called a parison is extruded into a mould.
Blow…

Page 8

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Page 9

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1) Mould halves loaded with thermoplastic powder and clamped together
2) The moulds are rotated whilst heated until it melts ensuring it covers all the mould
3) The mould is then cooled
4) The mould halves are separated and the product removed
Vacuum forming
This process uses a wooden mould…

Page 10

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Comments

No

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Oh my god thank you o_o This is perfect! Wish I'd looked here before xD

Junaid

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exactly wat i was looking for. thank you so much. 

Danni Bedster

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Amazing! Thank you.

stuart

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i think i love you
THANK YOU

Prince

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thank you soo much


Mustafa

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i recommend this for anyone doing DT A-Level, its perfect. :D

olive

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Thankyou~

Mayuri

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This has made my revision so much easier... thank u :)


amber

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THANKS!

Tom

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no one's commented for a while but... is this basically all you need for the exam? Regardless, this is a great help! :D

Matthew Nargol

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Missing some vital content such as for the thermosets you havent listed the thermoset used for electrical fittings > Urea Formaldehyde. Its pretty vital that people know this as this is a common question. But very helpful notes apart from that so far, thanks!

Teddy Ng

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Archemidial Screw in page two should be Archimedean screw as in mark scheme. I think

Caroline946

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can you re-upload it or something? i can't see it x

DanT

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A2 notes?

Skygliderjack

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I can't access the file? Can you re-upload it please?

AJ

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This is excellent! Really helps me for my revision.

hannahmoore

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Love this! How would you suggest I revise from these notes? 

chloegauntyy

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i like crutons

chloegauntyy

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they make me feel so much nicer inside

ruthie ainsworth

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Thanks for this 

camila1

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Thank you!!!

Similar Design Technology: Product Design resources:

See all Design Technology: Product Design resources »

Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
Product Design Revision:
Plastics
There are 3 types of plastic:
· Thermoplastics- can be reheated and reshaped as they have loose monomer chains, can be recycled
and coloured pigments can be added to make it more aesthetically pleasing.
· Thermosets ­ undergo a chemical change so permanently rigid, cannot be…

Page 3

Preview of page 3
polyethylene
Good stiffness, good chemical resistance
Crates, bottles, buckets, bowls Injection moulded LDPE 4 Low density
polyethylene
Lightweight, low stiffness and rigidity, good chemical resistance
Detergents bottles, toys, carrier bags Blow moulded
PET 1 Polyethylene
terephthalate
Moderate chemical resistance
Clothing, blow moulded bottles for beer and soft drinks, electrical sockets,…

Page 4

Preview of page 4

Page 5

Preview of page 5
Joining plastics:
· Plastic weld ­ a multipurpose adhesive that joins most plastics (not foamed plastic)
· Tensol 12 ­ is good for acrylic, it is quick and easy to use, if spilt marks the work, not very strong
· Rivets, nuts, bolts and machine screws can be used to…

Page 6

Preview of page 6

Page 7

Preview of page 7
Advantages:
· produces very complex 3D shapes
· Large numbers can be produced with consistent quality
· Metal inerts can be included
Disadvantages:
· Initial set up costs are high
· Moulds are expensive
Blow moulding
A tube of softened plastic called a parison is extruded into a mould.
Blow…

Page 8

Preview of page 8

Page 9

Preview of page 9
1) Mould halves loaded with thermoplastic powder and clamped together
2) The moulds are rotated whilst heated until it melts ensuring it covers all the mould
3) The mould is then cooled
4) The mould halves are separated and the product removed
Vacuum forming
This process uses a wooden mould…

Page 10

Preview of page 10

Comments

No

Report

Oh my god thank you o_o This is perfect! Wish I'd looked here before xD

Junaid

Report

exactly wat i was looking for. thank you so much. 

Danni Bedster

Report

Amazing! Thank you.

stuart

Report

i think i love you
THANK YOU

Prince

Report

thank you soo much


Mustafa

Report

i recommend this for anyone doing DT A-Level, its perfect. :D

olive

Report

Thankyou~

Mayuri

Report

This has made my revision so much easier... thank u :)


amber

Report

THANKS!

Tom

Report

no one's commented for a while but... is this basically all you need for the exam? Regardless, this is a great help! :D

Matthew Nargol

Report

Missing some vital content such as for the thermosets you havent listed the thermoset used for electrical fittings > Urea Formaldehyde. Its pretty vital that people know this as this is a common question. But very helpful notes apart from that so far, thanks!

Teddy Ng

Report

Archemidial Screw in page two should be Archimedean screw as in mark scheme. I think

Caroline946

Report

can you re-upload it or something? i can't see it x

DanT

Report

A2 notes?

Skygliderjack

Report

I can't access the file? Can you re-upload it please?

AJ

Report

This is excellent! Really helps me for my revision.

hannahmoore

Report

Love this! How would you suggest I revise from these notes? 

chloegauntyy

Report

i like crutons

chloegauntyy

Report

they make me feel so much nicer inside

ruthie ainsworth

Report

Thanks for this 

camila1

Report

Thank you!!!