Plastics By Luuuccciiiaaa Period: 1845 to 1845 Nitrocellulose Period: 1860 to 1860 Celluloid Period: 1907 to 1907 Bakelite Period: 1908 to 1908 Rayon Period: 1920 to 1920 Cellophane Period: 1926 to 1926 Polyvinyl chloride Period: 1931 to 1931 Neoprene Period: 1935 to 1935 Nylon Period: 1936 to 1936 Polyethylene Period: 1938 to 1938 Teflon Period: 1949 to 1949 Tupperware Period: 1966 to 1966 Kevlar Period: 1979 to 1979 Polyester amides