EPP (Expanded Polypropylene Foam)
Sitting snugly in the negative space between the cardboard box and the product lies a low-density and solid material that, though often used for packaging, has a much more valuable range of uses outside the short life of packaging.
The unique quality that expanded polypropylene has to offer the world of materials is its aerated structure, which can be controlled to a range of densities to achieve lightweight but thick, solid blocks. Its big disadvantage is that, like expanded polystyrene (EPS), its main application, and the one that is most visible, is in cheap, transient packaging materials. Although polystyrene and polypropylene are not the only materials that can be foamed, they deserve special attention because ...
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