Trayless shrink wrapping considerations
Trayless shrink wrapping removes the tray from the finished pack, so the machine must keep the products stable while the film sleeve is formed, sealed and shrunk. This makes product stability, bundle pattern and film performance especially important.
Bottle and can multipacks are common examples where trayless wrapping may be considered, but the right route depends on product shape, weight, line speed and how the pack will be handled after the tunnel.
Lancing can help check whether a trayless route is practical for the product, or whether a tray-supported pack, sleeve wrapper or another shrink wrapping route would be safer for transport and handling.
What to confirm before buying
- Trayless bottle multipacks.
- Can multipacks and grouped products.
- PE shrink film sleeve wrapping.
- Shrink tunnel and conveyor matching.
| Stability | Can the bundle stay aligned before, during and after shrink? |
|---|---|
| Film | Is the film route suitable for holding the pack without a tray? |
| Output | Will the target speed allow controlled collation and tunnel travel? |
| Handling | How will the finished pack be stacked, moved or palletised? |