Polyethylene is a thermoplastic resin. It is a transparent solid (shapeless form) or white (crystalline form) with excellent insulating qualities and has excellent chemical stability. It is a very versatile material, and is one of the most economical types of plastic; it is used most commonly as an insulator for electrical cables, agricultural wrapping, shopping bags and plastic bags, various types of containers, tubing, the internal layer of sterile containers for drinks, and it has many other uses.

Polypropylene (PP) is a plastic compound that can show different types of tacticity. Its most interesting product, from a commercial point of view, is its isotactic form, which is characterized by a high breakage charge (the limit above which a material cannot be used definitively), low-density, good resistance to heat and abrasion.

Heat shrinking insures perfect stability even in the most taxing conditions, and total sealing of the package itself to guarantee its conservation and visibility.