Packaging Reference Library · Wall Charts
Pallet Wrap Pattern Chart
The basic stretch wrap pattern for a pallet load: base wraps that lock the load to the pallet, overlap up the load, top wraps, and when to add a top sheet.
Draft, open for review. Check every value against the governing standard and the manufacturer’s data before use.
What it is
Stretch wrap holds a pallet load together as one unit. How well it works depends on the pattern: where the film goes, how many times, and how tight. The most important part is the bottom, where the film must lock the load to the pallet. Containment force is the squeeze the film puts on the load. It comes from the film type, the pre-stretch and the number of layers. ASTM D4649 is the guide for selecting and using stretch wrap film.
How to use it
- Attach the film to the pallet, not just the load.
- Make base wraps at the bottom.
- Spiral up the load with even overlap.
- Make top wraps at the top layer.
- Add a top sheet if the load needs dust or water protection.
- Spiral back down if the load needs extra containment.
- Cut and tuck or press the tail so it does not unravel.
Wrap pattern steps
| Step | What to do | Why |
|---|---|---|
| Anchor | Tie or tuck the film to a pallet corner | Keeps the start from pulling free |
| Base wraps | Two or three wraps around the pallet and the bottom layer | Locks the load to the pallet |
| Roping (optional) | Gather the film into a rope at the pallet base | Adds strength where loads shift most |
| Spiral up | Overlap each pass, commonly about 50% | Even containment up the load |
| Top wraps | Two or three wraps at the top layer | Holds the top layer and corners |
| Top sheet (optional) | Lay a sheet on top before the final wraps | Keeps out dust and water |
| Spiral down (optional) | Second pass back down | More containment for heavy or unstable loads |
| Tail | Cut, tuck or press the end | Prevents unraveling |
Key points
- Base wraps are the most important. A load that is wrapped well but not tied to the pallet can slide off as a block.
- Pre-stretch the film to the maker's recommended level. Under-stretched film wastes film and holds less.
- Too much tension can crush box corners or tip light loads.
- Corner boards protect box edges and stiffen the load.
- Containment needs depend on load weight and how the load will travel. Use the film maker's guidance and test loads.
Common mistakes
- Starting the wrap above the pallet so the load is not tied down.
- Too little overlap, leaving bands where boxes can slip out.
- Skipping top wraps so the top layer slides.
- Wrapping too tight and crushing boxes.
- Covering pallet labels with cloudy film.
Governing standards: ASTM D4649 (selection and use of stretch wrap films); film maker's data; customer pallet specifications.
Reference only. Verify against the current governing code or standard, the manufacturer's data and the project documents before use. Apps for Distributors disclaims liability arising from reliance on this reference.
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