NatureWorks LLC is a U.S. company that manufactures bioplastics—polymers derived entirely from plant resources—as an alternative to conventional plastic, which is made from petroleum. The commercial quality polymer is made from the carbon found in simple plant sugars such as corn starch to create a proprietary polylactic acid polymer (PLA) which is marketed under the brand name Ingeo. Headquartered in Minnetonka, Minnesota, NatureWorks is jointly owned by Cargill and PTT Global Chemical, a Thai state-owned company. In 2001, NatureWorks opened its manufacturing facility in Blair, Nebraska—the worlds first and largest PLA facility and it supplies NatureWorks' Ingeo biopolymer. The Blair facility slated to increase its Ingeo nameplate capacity to 150,000 metric tons in the first quarter of 2013. In 2007 Cargill, the parent company, entered into a joint venture with Japans Teijin, which acquired a 50% stake in NatureWorks. The partnership was dissolved in July 2009 when Teijin faced corporate restructuring in the wake of the Great Recession.