What was the main engineering challenge Wyeth's work helped solve regarding plastic material science?

Answer

Mastering material science to handle carbonation pressure without deformation

The key material science challenge was creating a plastic container strong enough to manage the internal forces of carbonation without deforming or leaking, while remaining inexpensive to mass-produce.

What was the main engineering challenge Wyeth's work helped solve regarding plastic material science?
inventionsodaplasticbottlepackaging