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DIFFERENT TYPES OF PLASTICS AND THEIR CLASSIFICATION
The Society of the Plastics Industry (SPI) established a classification system in 1988 to allow
consumers and recyclers to identify different types of plastic. Manufacturers place an SPI code, or
number, on each plastic product, usually moulded into the bottom. This guide provides a basic
outline of the different plastic types associated with each code number.
Polyethylene Terephthalate sometimes absorbs odours and
flavours from foods and drinks that are stored in them. Items
made from this plastic are commonly recycled. PET(E) plastic
is used to make many common household items like beverage
bottles, medicine jars, rope, clothing and carpet fibre.
High-Density Polyethylene products are very safe and are not
known to transmit any chemicals into foods or drinks. HDPE
products are commonly recycled. Items made from this plastic
include containers for milk, motor oil, shampoos and
conditioners, soap bottles, detergents, and bleaches. It is
NEVER safe to reuse an HDPE bottle as a food or drink
container if it didn’t originally contain food or drink.
Polyvinyl Chloride is sometimesrecycled. PVC is used for all
kinds of pipes and tiles, but is most commonly found in
plumbing pipes. This kind of plastic should not come in contact
with food items as it can be harmful if ingested.
Low-Density Polyethylene is sometimesrecycled. It is a very
healthy plastic that tends to be both durable and flexible. Items
such as cling-film, sandwich bags, squeezable bottles, and
plastic grocery bags are made from LDPE.
Polypropylene is occasionally recycled. PP is strong and can
usuallywithstand higher temperatures.It is used to make lunch
boxes, margarine containers,yogurt pots,syrup bottles,
prescription bottles.Plastic bottle caps are often made from PP.
Polystyrene is commonly recycled, but is difficult to do. Items
such as disposable coffee cups, plastic food boxes, plastic
cutlery and packing foam are made from PS.
Code 7 is used to designate miscellaneous types of plastic not
defined by the other six codes. Polycarbonate and Polylactide
are included in this category. These types of plastics are difficult
to recycle. Polycarbonate (PC) is used in baby bottles, compact
discs, and medical storage containers.
Plastic Type General Properties Common Household Uses
Good gas & moisture barrier properties Mineral Water, fizzy drink and beer bottles
High heat resistance Pre-prepared food trays and roasting bags
Clear Boil in the bag food pouches
Hard Soft drink and water bottles
Polyethylene
Tough Fibre for clothing and carpets
Microwave transparency Strapping
Terepthalate
Solvent resistant Some shampoo and mouthwash bottles
Excellent moisture barrier properties Detergent, bleach and fabric conditioner bottles
Excellent chemical resistance Snack food boxes and cereal box liners
Hard to semi-flexible and strong Milk and non-carbonated drinks bottles
Soft waxy surface Toys, buckets, rigid pipes, crates, plant pots
Permeable to gas Plastic wood, garden furniture
High
Density HDPE films crinkle to the touch Wheeled refuse bins, compost containers
Polyethylene Pigmented bottles stress resistant
Excellent transparency Credit cards
Hard, rigid (flexible when plasticised) Carpet backing and other floor covering
Good chemical resistance Window and door frames, guttering
Long term stability Pipes and fittings, wire and cable sheathing
Good weathering ability Synthetic leather products
Polyvinyl
Stable electrical properties
Low gas permeability
Chloride
Tough and flexible Films, fertiliser bags, refuse sacks
Waxy surface Packaging films, bubble wrap
Soft – scratches easily Flexible bottles
Good transparency Irrigation pipes
Low melting point Thick shopping bags (clothes and produce)
Low Density
Stable electrical properties Wire and cable applications
Good moisture barrier properties Some bottle tops
Polyethylene
Excellent chemical resistance Most bottle tops
High melting point Ketchup and syrup bottles
Hard, but flexible Yoghurt and some margarine containers
Waxy surface Potato crisp bags, biscuit wrappers
Translucent Crates, plant pots, drinking straws
Polypropylene Strong Hinged lunch boxes, refrigerated containers
Fabric/ carpet fibres, heavy duty bags/tarpaulins
Clear to opaque Yoghurt containers, egg boxes
Glassy surface Fast food trays
Rigid or foamed Video cases
Hard Vending cups and disposable cutlery
Brittle Seed trays
Polystyrene
High clarity Coat hangers
Affected by fats and solvents Low cost brittle toys
There are other polymers that have a Nylon (PA)
wide range of uses, particularly in Acrylonitrile butadiene styrene (ABS)
engineering sectors. They are identified Polycarbonate (PC)
with the number 7 and OTHER (or a Layered or multi-material mixed polymers
triangle with numbers from 7 to 19).

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Plastic.docx

  • 1. DIFFERENT TYPES OF PLASTICS AND THEIR CLASSIFICATION The Society of the Plastics Industry (SPI) established a classification system in 1988 to allow consumers and recyclers to identify different types of plastic. Manufacturers place an SPI code, or number, on each plastic product, usually moulded into the bottom. This guide provides a basic outline of the different plastic types associated with each code number. Polyethylene Terephthalate sometimes absorbs odours and flavours from foods and drinks that are stored in them. Items made from this plastic are commonly recycled. PET(E) plastic is used to make many common household items like beverage bottles, medicine jars, rope, clothing and carpet fibre. High-Density Polyethylene products are very safe and are not known to transmit any chemicals into foods or drinks. HDPE products are commonly recycled. Items made from this plastic include containers for milk, motor oil, shampoos and conditioners, soap bottles, detergents, and bleaches. It is NEVER safe to reuse an HDPE bottle as a food or drink container if it didn’t originally contain food or drink. Polyvinyl Chloride is sometimesrecycled. PVC is used for all kinds of pipes and tiles, but is most commonly found in plumbing pipes. This kind of plastic should not come in contact with food items as it can be harmful if ingested. Low-Density Polyethylene is sometimesrecycled. It is a very healthy plastic that tends to be both durable and flexible. Items such as cling-film, sandwich bags, squeezable bottles, and plastic grocery bags are made from LDPE. Polypropylene is occasionally recycled. PP is strong and can usuallywithstand higher temperatures.It is used to make lunch boxes, margarine containers,yogurt pots,syrup bottles, prescription bottles.Plastic bottle caps are often made from PP. Polystyrene is commonly recycled, but is difficult to do. Items such as disposable coffee cups, plastic food boxes, plastic cutlery and packing foam are made from PS. Code 7 is used to designate miscellaneous types of plastic not defined by the other six codes. Polycarbonate and Polylactide are included in this category. These types of plastics are difficult to recycle. Polycarbonate (PC) is used in baby bottles, compact discs, and medical storage containers.
  • 2. Plastic Type General Properties Common Household Uses Good gas & moisture barrier properties Mineral Water, fizzy drink and beer bottles High heat resistance Pre-prepared food trays and roasting bags Clear Boil in the bag food pouches Hard Soft drink and water bottles Polyethylene Tough Fibre for clothing and carpets Microwave transparency Strapping Terepthalate Solvent resistant Some shampoo and mouthwash bottles Excellent moisture barrier properties Detergent, bleach and fabric conditioner bottles Excellent chemical resistance Snack food boxes and cereal box liners Hard to semi-flexible and strong Milk and non-carbonated drinks bottles Soft waxy surface Toys, buckets, rigid pipes, crates, plant pots Permeable to gas Plastic wood, garden furniture High Density HDPE films crinkle to the touch Wheeled refuse bins, compost containers Polyethylene Pigmented bottles stress resistant Excellent transparency Credit cards Hard, rigid (flexible when plasticised) Carpet backing and other floor covering Good chemical resistance Window and door frames, guttering Long term stability Pipes and fittings, wire and cable sheathing Good weathering ability Synthetic leather products Polyvinyl Stable electrical properties Low gas permeability Chloride Tough and flexible Films, fertiliser bags, refuse sacks Waxy surface Packaging films, bubble wrap Soft – scratches easily Flexible bottles Good transparency Irrigation pipes Low melting point Thick shopping bags (clothes and produce) Low Density Stable electrical properties Wire and cable applications Good moisture barrier properties Some bottle tops Polyethylene Excellent chemical resistance Most bottle tops High melting point Ketchup and syrup bottles Hard, but flexible Yoghurt and some margarine containers Waxy surface Potato crisp bags, biscuit wrappers Translucent Crates, plant pots, drinking straws Polypropylene Strong Hinged lunch boxes, refrigerated containers Fabric/ carpet fibres, heavy duty bags/tarpaulins Clear to opaque Yoghurt containers, egg boxes Glassy surface Fast food trays Rigid or foamed Video cases Hard Vending cups and disposable cutlery Brittle Seed trays Polystyrene High clarity Coat hangers Affected by fats and solvents Low cost brittle toys There are other polymers that have a Nylon (PA) wide range of uses, particularly in Acrylonitrile butadiene styrene (ABS) engineering sectors. They are identified Polycarbonate (PC) with the number 7 and OTHER (or a Layered or multi-material mixed polymers triangle with numbers from 7 to 19).