The Indorama PET factory in Workington is closing with the loss of 73 jobs.
Vice President of Corporate Communications Richard Jones told ITV Border that the facility would be mothballed.
No time scale has been agreed.
The company says an influx of cheaper materials from Asia is to blame for the decision.
More top news
A Cumbrian farmer is calling on ministers in London today to give his action group permission to fix flooding problems across Cumbria.
Cold winds bring a taste of winter.
Cumbria Fire and Rescue Service is reminding people to clear clutter that may be blocking escape routes in the event of a fire.