Romaine Heart Packaging Film

Romaine hearts are trimmed at the butt end, and that cut surface starts browning within days. Rib discoloration follows when moisture and gas balance drift inside the sleeve or flow-pack.

StayFresh film is calibrated to this crop's respiration rate. It lets in just enough oxygen, lets CO2 and ethylene out, and holds humidity where the produce needs it. Packers see 30 to 40% longer shelf life in the cold chain, measured on their own line during the two-week test.