classification

Major Class	Parent	Descriptor	Acronym	Synonym	Chinese Descriptor	Spanish Descriptor	Reference	Definition
Product	Fiber	Polypropylene Fiber		Polypropylene Fibre		de fibra de polipropileno	INDA Nonwovens Glossary	A manufactured, olefin fiber made from polymers or copolymers of polypropylene. One attractive physical characteristic of polypropylene is its specific gravity of less than one, which results in a larger area volume yield per kilogram or pound of resin or staple fiber compared to competitive fibers. Polypropylene has a relatively low melt temperature which restrict its uses in many nonwoven markets, but it has good strength properties, softness, and chemical resistance to strong acids and alkalis. Major nonwoven markets for staple and spunlaid polypropylene include cover stock, medical apparel and related, geotextiles, carpeting, blankets, automotive and various other durable markets.