| Feature | Tray Overwrapper | Shrink Wrapper (with tunnel) | Flow Wrapper | |---------|----------------|------------------------------|--------------| | | Flat, pre-cut sheet | Centerfold or tube | Tube (vertical/horizontal) | | Heat source | Seal bars only | Seal + shrink tunnel | Seal bars only | | Energy use | Lower (no tunnel) | Higher | Lower | | Tamper evidence | Excellent (tight lap seal) | Good | Moderate | | Tray compatibility | Any rigid tray | Mostly rigid trays | Typically no tray | | Changeover time | 5–15 min | 10–20 min | 10–30 min |
This machinery isn't just for massive industrial meat-packing plants. Their versatility makes them ideal for: tray overwrapper