Extrusion Moulding (Leaving Cert Engineering): Flashcards
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Type of process: extrusion moulding
Type of process: extrusion moulding
Continuous manufacturing process
Cross-section property of extruded products
Cross-section property of extruded products
Uniform along entire length
Initial form of polymer in extrusion
Initial form of polymer in extrusion
Pellets
Component feeding material into barrel
Component feeding material into barrel
Hopper
Two functions of screw mechanism
Two functions of screw mechanism
Mixes polymer and creates pressure
Term for molten plastic in extrusion
Term for molten plastic in extrusion
Melt
Component determining final cross-sectional shape
Component determining final cross-sectional shape
Extrusion die
System solidifying extruded plastic
System solidifying extruded plastic
Coolant system
3 examples of extrusion products
3 examples of extrusion products
Window frames, pipes, garden hoses
Key advantage of extrusion operation
Key advantage of extrusion operation
Continuous - highly efficient
Why are thermoplastics used in moulding?
Why are thermoplastics used in moulding?
Can be heated, shaped & cooled repeatedly
Two heat sources in barrel
Two heat sources in barrel
Heating elements and screw friction
Transport for finished extruded product
Transport for finished extruded product
Conveyor belt