Injection Moulding (Leaving Cert Engineering): Flashcards
📚Flashcards
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Practise the cards
15 cards from this deck
Most common manufacturing process for plastic products
Most common manufacturing process for plastic products
Injection moulding
Material type that works best with injection moulding
Material type that works best with injection moulding
Thermoplastics
What injection moulding creates using cavity mould
What injection moulding creates using cavity mould
Fixed-shape products
Injection moulding vs extrusion: key difference
Injection moulding vs extrusion: key difference
Injection = fixed shapes; extrusion = continuous shapes
What's loaded into hopper in feeding step
What's loaded into hopper in feeding step
Polymer pellets
Component that mixes & heats material in barrel
Component that mixes & heats material in barrel
Rotating screw
What pushes screw forward during injection
What pushes screw forward during injection
Hydraulic ram
What pushes finished product out of mould
What pushes finished product out of mould
Ejector pins
Key process characteristic requiring minimal supervision
Key process characteristic requiring minimal supervision
Highly automated
What hopper stores
What hopper stores
Plastic granules
Function of check valve in injection system
Function of check valve in injection system
Prevents backflow of molten plastic
Example injection moulding products
Example injection moulding products
Phone covers, keyboards, toys, pens, lunch boxes
Surface finish quality from injection moulding
Surface finish quality from injection moulding
Excellent
System needed for processing thermosets
System needed for processing thermosets
Double barrel setup
Waste level vs other processes
Waste level vs other processes
Minimal waste