Which packaging innovation was originally developed in 1952 but only gained widespread commercial adoption in the 1990s after environmental concerns became more prominent?

The packaging industry has seen remarkable innovations aimed at sustainability and functionality. One particular breakthrough has dramatically changed how certain products are preserved and delivered to consumers, creating a significant environmental impact while maintaining or improving product quality. This innovation demonstrates how creative thinking can solve multiple problems simultaneously in product delivery systems.

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Water-soluble packaging film
Aseptic carton packaging (Tetra Pak)
Biodegradable peanut foam
Edible food wrapping