https://www.sciencedaily.com/releases/2019/04/190401121817.htm > In a new research paper entitled "Glass-like transparent high strength polyethylene films by tuning drawing temperature." Published online today -- 1st April 2019 -- in the Journal Polymer, the authors show that after carefully selecting the type polythene and by tuning the temperature during the creation of oriented polythene films a balance can be created that produces a highly useful and lightweight transparent material with a significant strength and resilience approaching, and in some ways, exceeding that of metals. > Previously anyone looking to replace heavy and often brittle glasses with a transparent plastic have looked at conventional transparent plastics like polycarbonate (PC) and poly(methylmethacrylate) (PMMA) both of which possess relatively unsatisfactory mechanical performance compared to an engineering material like aluminium.