Sappi North America announced Tuesday it had completed a $25 million investment in the Cloquet mill.

"We are pleased that this investment brings an additional 30,000 tons per year of pulp production capability to better serve our dissolving wood pulp customers," Mike Schultz, managing director of the Sappi Cloquet Mill, said in a statement.

Dissolving wood pulp is used as a textile and has pharmaceutical and food applications; South Africa-based Sappi touts the product as a sustainable alternative to other fibers.

The upgrades were made to “debottleneck areas of the pulp manufacturing process,” according to a news release, with much of the work in recovery areas at the mill.