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Manufacturing processes of Plastic (Compression moulding (Materials…
Manufacturing processes of Plastic
Compression moulding
Materials
Melamine Formaldehyde
Epoxy Resin
Polyester Resin
Identifying Features
Ejector Pin Marks
Split Lines
Shrinkage Marks
Examples of Products
Electrical housings
Plastic bowls
Pan Handles
Injection Moulding
Identifyable Features
Sprue Marl
Ejector Pin Markd
Split line
High detail
Materials
Polyethylene
High/Low density polyethylene
Polyproelene
Examples of Products
Bottle caps
Lego Bricks
Plastic Gears
Rotational Moulding
Identifying features
Smooth on the inside
Follows pattern on the outside
Hollow
Materials
Chocolate
High density polyethylene
Linear Low Density Polyethylene
Example of Product
Balls
Playground Equipment
kayacks
Blow Moulding
Identifying Features
Hollow
Split line
Plastic is thinner at the corners
Examples Of Products
Polyethylene Terephthalate
Low Density Polyethylene
High Density Polyethylene
Materials
Polypropelene
Polyethylene Terephthalate
Polyethylene
Extrusion Moulding
Materials
Polyethylene
Polypropelene
Polystyrene
Identifying Features
Identical cross section
Good surface finish
Lines across the length
Examples Of Product
Pipes
Tubes
Plastic Fencese
Vacuum Forming
Examples
Food Packaging
Toy car bodyshells
Protective covers
Materials
Polyethylene
High Impact Polystyrene
Acrylonitrile Butadiene Styrene
Identifyable Features
at least a 5 degree taper
There wil e no overhangs
Plastic will be the same thickness across the whole product