The Automatic Inline Tub Sealer (AITS) can automatically feed the inserts into the machine, or the operator can place the inserts manually. The Inline utilizes a push arm or conveyor system to index the inserts through the process. The inserts are supported from the bottom and the sealing flange for accurate sealing and cutting. The seal head retracts, and the scrap web is wound on a take-up mandrel, automatically advancing a new film section. The film registration sensor system will move to the next eye-mark. Once the insert is sealed machine will advance the insert out of the machine onto the conveyor where (optional) unload system will pick and place tubs into formed boxes.