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- To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name.

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Presentation on theme: "- To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name."— Presentation transcript:

1 - To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name and explain different plastic manufacturing processes Where does plastic come from? What is it’s raw material source? When and why was it developed originally?

2 - To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name and explain different plastic manufacturing processes Where does plastic come from? They comes from the petro-chemical industry as a bi-product after diesel or petrol is made. Because of this most plastics are synthetic. What is its raw material source? It is made from crude oil. When and why was it developed originally? The first plastics where developed during WWII to be used by the military.

3 - To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name and explain different plastic manufacturing processes The are three main groups of synthetic plastic or polymer. Thermoplastics - This are plastics which can be reheated or re-melted to be formed into new products. -This means that they are easy to recycle. -They can be shaped into complex formed because they are then very malleable. -They can also have additives added to them which can change the colour, the rigidness or its UV resistance. -They are good insulaters of heat and electricity. Example Thermoplastics -Acrylic- used as a replacement for glass, used in menu holders -Polypropylene (PP)- used in children’s toys, used in chairs, battery cases -High Density Polythene (HDPE)- used in mobile phone cases, used in plastic bottle tops -Low Density Polythene (LDPE)- used in plastic bags, food packaging and bottles -High Impact Polystyrene (HIPS)- used in blister packaging and remote control car bodies -Polyvinyl Chloride (PVC)- used in modern window frames, barge boards, soffits -Nylon - used in washers, screws, gears, used in clothing

4 - To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name and explain different plastic manufacturing processes The are three main groups of synthetic plastic or polymer. Thermo-setting plastics - This are plastics which can formed or moulded once but if reheated they will burn -They can be shaped into complex formed once. -They can also have additives added to them which can change the colour, the rigidness or its UV resistance. -They are good insulters of heat and electricity. Example Thermo-setting plastics Urea formaldehyde - used in plug and light sockets Melamine formaldehyde)- - used in kitchen utensils & kitchen worktops Elastomers -They can be stretched into different direction but will return to their original form. -They often have a texture to them so can be gripped very well -They can also have additives added to them which can change the colour or its UV resistance. -They are good insulters of heat and electricity. Example Elastomer Thermoplastic Elastomer (TPE) - used in the handle grips of razors, kettles,etc.

5 - To be able to identify different types of plastic and their properties - To be able to select an appropriate plastic for a product. - To be able to name and explain different plastic manufacturing processes Stock form -Plastic is available in a range of different stock forms. -Sheets -Extruded into different profiles (shapes) -Pellets -Powder Processes Plastic products can be formed using a number of different manufacturing processes -Vacuum forming -Injection moulding -Extrusion -Rotational moulding -Blow moulding -Hand lay-up (GRP)


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