Polypropylene, whose abbreviation is PP, is a very versatile thermoplastic type of plastic that unlike polyvinyl chloride, whose abbreviation is PVC, if burnt does not produce a large quantity of smoke, and does not generate dioxin, highly toxic substance. Initially discovered in 1951 by Karl Rehn, who nevertheless did not realise its importance, it was discovered again in 1954 by Giulio Natta who perceived its potentials and proposed its use to industry.
PP melts at the temperature of 160 degrees Celsius, 320 Fahrenheit. It is used either as a mouldable material or as a textile fibre. As mouldable material it is employed to be the basic component of many types of objects like food containers, folders, office dust bins, pipes, packaging items and so on. As a fibre it is largely used for gloves, socks, handbags, rugs, mats, carpet flooring, and other. Unlike Nylon, Polypropylene does not absorb water; this characteristic makes it particularly suitable for the carpeting of outdoor spaces.