The lint conditioning process starts as the batt feeds into the Steamroller from the battery condenser. Unlike moisture-type condensers, the Steamroller is a separate piece of equipment from the battery condenser. This means that the moist air used by the Steamroller isn’t diluted by outside air which reduces efficiency and causes condensation and hairing problems. The batt passes under a rotating drum where moist air enters from underneath. The Steamroller is under slightly negative pressure pulling the moist air completely through the batt for uniform moisture application through the fiber. Excess air is exhausted by a dedicated fan piped into the lint flue. The conditioned batt is compressed by the feed-out roller as it exits the Steamroller and continues down the lint slide into the tramper.