Physical Protection
One of the main purposes for packaging is to keep items safe. Many of the materials used to make packaging can help to keep moisture or air away from items that might decay. Some packaging is also made very durable so it can protect fragile items from damage.
Organization
Packaging helps us separate things into categories and keep them organized. If you fill a box with one type of item, it helps you keep that item separate from other items, and that makes things easier to find.
Advertising
When they go through the grocery store, nearly everyone has noticed all the bright colors and flashy labels used to attract attention to items, and this is a great example of how packaging is used as advertising. The companies have to package their items anyway, so it is important to make sure that packaging helps sell the product.
Security
Sometimes packaging serves to keep others away from an item or a group of items. One example of that would be the wrapping and boxing of birthday presents. The idea is to maintain secrecy about what the person is receiving. Another, more serious example would be the metallic safe, which can be seen on an abstract level as a kind of packaging designed to keep thieves from stealing items.
Different types of products require different types of packaging. The choices depending on who will consume the product and what kind of protection it needs.
Blister Pack
Tablets, pills and action figures are typical products that reach consumers by way of a blister pack. Blister packs provide individual protection for the product, while providing the manufacturer with marketing opportunities on the packing itself.
Tamper-evident packaging
Medications are the mostly common found products using tamper-proof packaging. Tamper-evident sealing measures are also used on shipping containers, especially in the wholesale trade of goods. Shrink-wrap is also a very common type of tamper-evidence material