In collaboration with Changjiang Chemical Fibers, CAS Chagnchun Institute of Applied

Chemistry has developed a one-step spinning process to produce poly-lactic-acid fibers.

Researchers have landed breakthroughs in developing the key technologies for producing

poly-lactic-acid fibers since 2006. They successfully produced poly-lactic-acid fibers from a

model unit in November 2006. Based on the development, they rolled out a proprietary

continuous spinning process working mainly on the film reactor, with an annual capacity of

50 tons, after addressing numerous technical difficulties, including material feeding,

mixing, temperature control, and transition from constant pressure, to vacuum, and

further to high pressure. On November 2007, they successfully rolled out poly-lactic-acid

fibers at a speed of 2800～5000m per minute.