Fibre maker Invista has promoted Kevin Robles to senior vice president of global operations, assuming operational responsibility for the company's 34 nylon, spandex, polyester and specialty chemical manufacturing facilities in 20 countries.

Since joining Invista in January 2011, Robles has served as vice president of operations for the company's Intermediates business. He also played a key role in launching the firm's latest nylon intermediates technology in Texas, which involved a $100m investment.

"Kevin's vision and industry knowledge will help further elevate our operational expertise for our customers and the communities in which we operate," said Jeff Gentry, CEO and chairman of the board.

Robles succeeds David Dotson, who will transfer to Flint Hills Resources, another Koch company, in January.

Invista is one of the world's largest integrated producers of polymers and fibres, primarily for nylon, spandex and polyester applications. Its brands include Lycra, Tactel, Comforel and Coolmax.