Donaldson Co. acquired a majority stake in a small Missouri company that makes pleated dust-collection bags for grain, metal and mining factories, officials announced Tuesday.

Purchasing IFIL USA LLC expands Donaldson's product line and will add about $6 million to $8 million in annual revenues to Donaldson's $2.4 billion bulk. Terms were not disclosed.

Officials at Bloomington-based Donaldson praised IFIL's filter bags for having a longer life, easier filter changes and lower air emissions than traditional bags across the industry.