manufacturing methods for polymers Flashcards
vacuum forming / thermos forming process
begin with a sheet of thermoplastic
heated until softened
2 moulds connect and air is sucked out
cut excess / flash
vacuum forming / thermos forming materials
thermoplastic
HIP
PET
vacuum forming / thermos forming products
cycle helmets
packaging
injection moulding process
plastic goes in hopper
goes to screws and turns whilst heating plastic
then pushed into mould
injection moulding products
toothbrush
lego
lids
school chairs
injection moulding materials
HDPE
PP
ABS
PET
LDPE
line bending process
plastic is heated by the bar
mould it to desired shape
line bending materials
acrylic
line bending products
presentation case
calendaring process
plastic enters at the top
compressed to desired thickness
calendaring materials
PP
LDPE
calendaring products
sticky tape
polly pockets crisp packet
