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© Boardworks Ltd of 16 Food Packaging These icons indicate that detailed teacher’s notes or useful web addresses are available in the Notes Page. For more detailed instructions, see the Getting Started presentation. This icon indicates the slide contains activities created in Flash. These activities are not editable.
© Boardworks Ltd of 16 You’ve bought it, but how are you going to get it home from the shops? Why does food need packaging?
© Boardworks Ltd of 16 Reasons for packaging Packaging makes foods easy to store, handle and identify. It also helps protect them from spilling and from being damaged. Special packaging materials and methods protect food from air, bacteria, chemicals, insects, light, moisture and odours – all of which might spoil the food. Sometimes foods need short-term protection, like eggs. Sometimes they need long-term storage, like coffee and jam.
© Boardworks Ltd of 16 Aseptic packaging Cartons like these are used for liquid foods. The food is sterilized by being pasteurized and then sealed in sterile containers. No preservatives are needed. The food keeps for up to a year without being kept in a fridge.
© Boardworks Ltd of 16 Steel cans
© Boardworks Ltd of 16 Aluminium Aluminium cans with ring pulls are often used for fizzy drinks. Aluminium is strong but expensive, though it can be recycled. Aluminium cans do not need coating to stop them reacting to food like tin cans do. Aluminium foil is also used as a wrapping and to make containers for food.
© Boardworks Ltd of 16 Plastic bags and film Plastic bags are used to package bread, cakes and other products for short-term storage. They are also used to store frozen foods for longer periods of time. The bags can be printed with designs and information. Some bags have zip closures that let you reseal them. Cling film is useful for wrapping foods.
© Boardworks Ltd of 16 Jars and bottles Glass bottles and jars preserve food in a similar way to cans. You can see the food through the glass. Glass jars and bottles can be reused and recycled, but they are quite easy to break. Bottles can also be made of plastic, but these are more difficult to recycle.
© Boardworks Ltd of 16 Boxes Cardboard is used for folded boxes to hold products. Cardboard is not airtight, so another layer is often needed inside. Large cardboard cartons are often used to hold individual food packages. These Jaffa cakes have been packaged in sealed plastic, and then inside a branded cardboard box.
© Boardworks Ltd of 16 Vacuum formed packaging Shapes produced by vacuum forming can be used to support and protect food, sometimes inside other packaging, such as boxes. Film lids can be added to protect against bacteria. Plastic boxes can be used for transporting salads and sandwiches, or for storing food.
© Boardworks Ltd of 16 Tamper-evident packaging We all need to be sure that our food packaging has not been opened before we are ready to use it. There have been scares when people have deliberately opened food and damaged it in some way, perhaps by adding broken glass to it. This is called tampering. It might also be possible for someone to open a food packet, eat some of it and then put it back on the shelf. Tamper-evident packaging cannot be opened without it being obvious.
© Boardworks Ltd of 16 Recycling Recycling is a real issue for food packaging, as huge amounts of packaging is thrown away and buried in landfill sites every day. Government legislation is trying to make sure that more packaging gets recycled. don’t use any more packaging than we really need to use packaging that can be reused, like glass milk bottles recycle packaging wherever possible to be made into new material use biodegradable packaging, like paper, that rots naturally, rather than plastic that doesn’t. We need to make sure that we:
© Boardworks Ltd of 16 Material properties
© Boardworks Ltd of 16 What’s it made of?
© Boardworks Ltd of 16 Labelling
© Boardworks Ltd of 16 Summary Packaging is used to protect food and keep it hygienic. It is used to advertise the product and give information. Too much packaging is wasteful and bad for the environment. We should try to recycle packaging when we can. Plastic which breaks down when it is buried is called biodegradable. Packaging can be made of glass, plastic, card, steel or aluminium.
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