APPLETON — Specialty papermaker Thilmany LLC of Kaukauna has filed a lawsuit against papermaker Appleton alleging Thilmany suffered more than $20 million in damages because of a breach of contract by Appleton.

Appleton has 20 days to respond to the complaint.

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Thilmany, which supplied Appleton with thermal coating basestock for its West Carrollton, Ohio, facility, is asking for a jury trial.

The case was assigned to Outagamie County Branch 7 Judge John Des Jardins.