A pallet that arrives leaning, shifted, or collapsed doesn't just look bad on the receiving dock — it means damaged goods, chargebacks, and a customer who now has a reason to question your packaging. Most load failures aren't a materials problem. They're a wrap force problem: the film wasn't stretched or applied in a way that actually holds the load together under real transport stress.
What Actually Holds a Load Together
Stretch film doesn't secure a pallet by being strong the way a strap is strong. It secures a pallet by elongating — stretching around the load and then trying to return to its original length. That constant inward pull is called containment force, and it's the single biggest factor in whether a load survives transit.
Two loads wrapped in the same film can perform completely differently depending on how much the film was stretched during application, how many wraps were applied, and where on the load those wraps were placed.
The Three Most Common Causes of Load Failure
1. Under-stretched film
If the film isn't pulled tight enough during application — whether by hand or machine — it never generates enough containment force to resist the load settling and shifting during transport. This is the most common cause of failure with hand-wrapped pallets, since manual tension is inconsistent by nature.
2. Wrong gauge for the load
Heavier, denser, or irregularly shaped loads need either more wraps or a film gauge engineered for higher load retention. Using a lighter gauge than the load calls for is a common way operations try to save on material cost — and it's the fastest way to see that "savings" show up later as damaged freight claims.
3. Inconsistent application
Gaps in coverage, especially at the top and bottom of the load, let a pallet shift exactly where it's most vulnerable. This is where machine grade film with consistent, pre-stretched application tends to outperform hand wrapping at scale — see our hand wrap vs. machine wrap guide for how to decide which fits your operation.
How to Choose Gauge for Load Stability
WPS stretch film is available from 8 to 30 microns. As a general starting point:
- Lighter, uniform loads (cartons, light case goods) can often be secured with film on the lower end of the range, applied with adequate wraps.
- Heavier or irregular loads (mixed pallets, uneven stacking, higher-value freight) generally call for a heavier gauge or additional wraps concentrated at load-bearing points.
- High-volume, consistent SKUs are often better served by machine-grade, pre-stretched film, which can hit a higher containment force at a lower gauge than hand wrapping achieves.
These are starting points, not a substitute for testing against your actual loads — every operation's mix of load weight, shape, and transit distance is different.
Not sure what gauge your loads need?
Tell us about your loads and equipment, and we'll recommend a grade and gauge — with a sample available before you commit to volume.
Talk to a Packaging Specialist →The Takeaway
Load failure is rarely about buying "stronger" film — it's about matching wrap force, gauge, and application method to the actual load. Get those three right and the film does the job it's engineered to do.
