When you see pallets wrapped in plastic, you probably don’t think twice. But that simple-looking plastic—called stretch film—plays a huge role in protecting goods while they travel across cities or even continents.
So, how does stretch film keep your cargo safe? Recent research has revealed some surprising facts that every warehouse manager, logistics expert, or small business owner should know.
The Real Secret: It’s All About Tension and Force
Researchers discovered that two key forces make stretch film effective:
-
Stiffness: This is how much the film resists being pulled once it’s wrapped. The stiffer it is, the tighter your products stay together.
-
Containment Force: This is the steady pressure the film applies to the load. It keeps boxes from shifting, tipping, or falling during transportation.
Why Traditional Tests Weren’t Enough
For years, companies tested stretch film in labs by simply pulling it apart. But that didn’t reflect how the film works in real life—where machines pre-stretch the film before wrapping it around pallets.
New testing methods simulate this process, providing better data that helps companies:
-
Pick the right film for each type of product.
-
Avoid using too much film (saving money and reducing plastic waste).
-
Adjust wrapping machines for maximum safety.
Why This Matters for Your Business
If you’re in shipping, warehousing, or logistics, understanding these principles can:
-
Lower shipping damage by keeping loads more stable.
-
Cut down on material costs by using just the right amount of film.
-
Improve worker safety by preventing toppling pallets.
Quick Tips for Better Pallet Wrapping
-
Use high-quality stretch film designed for your load type.
-
Adjust your wrapping machine’s pre-stretch setting properly.
-
Don’t overwrap—more plastic isn’t always better.
-
Test different films and monitor load stability after shipping.
Conclusion
Stretch film may seem simple, but choosing and using it correctly can save your business money, protect your products, and even help the environment by reducing waste. Next time you see a wrapped pallet, remember—the real work is happening beneath the surface.