DuPont™ Tyvek® is a material that features all the best properties of paper, film and fabric, but also provides unique beauty, strength and recyclability.
No wonder it’s seen as an ideal choice for reusable bags by both environmentally conscious retailers and their equally environmentally conscious customers.Tyvek paper bag is a nonwoven paper bag consisting of spun bond olefin fiber. It was first discovered in 1955 by a researcher for the DuPont textile company working in an experimental lab, who noticed a type of white fluff coming out of a pipe. That fluff was a form of polyethylene, which DuPont requested a patent for within a year of the discovery. After technologies improved during the next few years, in 1959 DuPont discovered that when the fluff was spun at high speeds it produced a durable fabric that was able to be cut with a blade. While the product Tyvek was used since 1959, DuPont did not trademark the actual brand until 1965, making it available for commercial purposes in April 1967. As of 1970, Tyvek had reached the mainstream construction industry on both a national and global scale, and is often used for the construction of houses due to its ability to keep out liquid, while allowing vapor through. In 1972, DuPont released Tyvek packaging for sterile instruments that were to be used by surgeons and doctors in the medical field.