What type of packaging is made from two or more different material types that are fused together into a single unit?

Composite packaging is a type of packaging that combines two or more different material types, which are fused together to form a single unit. This design takes advantage of the unique properties of each material to enhance functionality. For example, a composite package may combine layers of plastic for moisture resistance and aluminum for barrier protection against light and air, creating an effective solution for preserving food quality.

The use of composite materials is especially beneficial in food packaging, as it can improve durability, shelf life, and resistance to physical damage while also being lightweight. This type of packaging also often reflects a balance between performance and sustainability, as many composite materials can be engineered to meet specific recycling or environmental standards.

In contrast, recyclable packaging specifically refers to materials that can be reclaimed and processed for reuse, while biodegradable packaging is designed to break down into natural elements over time. Flexible packaging denotes materials that can bend or fold, which may or may not be composite in nature. Thus, the defining characteristic of being made from multiple fused materials makes composite packaging the correct answer in this context.