Manufacturing Methods For Polymers Flashcards
1
Q
Vacuum forming / thermos forming process
A
- begin with a sheet of thermoplastic
- Heated until softened
- Two moulds connect and air is sucked out
- cut excess / flash
2
Q
Vacuum forming / thermos forming materials
A
- thermoplastic
- HIP - high impact
- PET
3
Q
Vacuum forming / thermos forming products
A
- Cycle helmets
- packaging
4
Q
Injection moulding
A
- plastic goes in hopper
- goes to screw and turns whilst heating the plastic
- then pushed into the mould
5
Q
Injections moulding materials
A
- HDPE
- PP
-ABS
-PET
-LDPE
6
Q
Injection moulding products
A
- toothbrush
- lego
- mouse and keyboard
- lids
- school chairs
7
Q
Line bending
A
- plastic is heated by the bar
- mould it to desired shape
8
Q
Line bending materials
A
- acrylic (PMMA)
9
Q
Line bending products
A
- presentation case
10
Q
Calendaring
A
- plastic enters at the top
- compressed to desired thickness
11
Q
Calendaring materials
A
- PP
- LDPE
12
Q
Calendaring products
A
- sticky tape
- Polly pockets
- plastic bags
- crisp packets
