Packaging protects the product from the inside, makes it fit for transport, and fulfils additional functions. They are intelligently constructed, functionally designed and adequately printed. In addition, it should contain information about the product, make products sortable and be environmentally friendly.
Packaging is a complex service which involves science, art & marketing ideas. When I say Service, packaging itself cannot exist, it needs a product, so it is a service for some other goods.
Packaging needs a sound technical knowledge only then a product can be contained, preserved, transported, stored and can be used. Packaging has evolved as per the needs of the society and brand owners.