KapStone Paper and Packaging Corp., which bought MeadWestvaco Corp.'s North Charleston paper mill last year, said Friday is shutting down one of its linerboard-making machines for another two weeks.

The move is in response to falling demand for cardboard products. The roughly 100 employees who work on the idled line will have to take unpaid time off or use vacation days, the company said.

This is the second time this year that the Northbrook, Ill-based manufacturer has shut down machines at the Cooper River paper mill for a two-week period.