Polietileno de alta densidade (HDPE) ou polietileno de alta densidade (PEHD) é um termoplástico de polietileno. A densidade de massa de polietileno de alta densidade pode variar de 0,93-0,97 g / cm ³. A diferença na força excede a diferença de densidade, dando uma maior força de HDPE específicos. [3] É também mais difícil e mais opaco e pode resistir a temperaturas um pouco mais alto (120 ° C / 248 ° F por períodos curtos, de 110 ° C / 230 ° F continuamente).

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications including packaging, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes. An addition polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases and acids.

Acrylonitrile butadiene styrene, whose acronym is derived from the ABS acrylonitrile butadiene styrene English form, is made by combining a copolymer of acrylonitrile, butadiene and styrene. Its chemical formula is (C8H8 • • C4H6 C3H3N) n, and the exact proportion of each component in the copolymer composition depends on the end use intended for this. The physical result of this copolymer is a thermoplastic material and lightweight, with some flexibility and resilience in absorbing impact, very common in the manufacture of molded products for various uses.

Low-density polyethylene (LDPE) is a thermoplastic. LDPE is defined by a density range of 0.910–0.940 g/cm³. It is not reactive at room temperatures, except by strong oxidizing agents, and some solvents cause swelling. It can withstand temperatures of 80 °C continuously and 95 °C for a short time. Made in translucent or opaque variations, it is quite flexible, and tough but breakable.