Functional
If the packaging has more than one function, ensure that it performs all of its functions. For example the packaging for Muller's corner range of yogurts is divided into two sections; one section contains the yogurt and the other contains the topping. The packaging enables consumers to decide how to mix their yogurt and is therefore interactive.
Packaging for food products must preserve the product for a period of time. Whilst packaging for fragile products should protect the product during storage and transit. If the packaging contains product instructions, make sure the instructions are clear and will not be accidentally torn when the consumer is removing the product.