To be useful, packaging must safely protect and deliver a product from the manufacturer to the consumer. Packaging must meet regulatory requirements—for example, pharmaceutical and drug packaging is tightly regulated; so is any packaging in contact with food. Packaging must protect the contents from damage and leaking. And it must meet expectations regarding aesthetics, merchandising, cost, ease of use, ease of opening and resealing, weight, fuel savings, greenhouse gas emissions, and so on. The right plastic packaging can deliver on these expectations, whether protecting fragile medical equipment or fresh foods.