Are you Creating a Perfect Environment for Pallet Mold Growth?

Pallet Mold is a Major Issue

Stretch wrap is a great tool for unitizing pallet loads, but it can introduce mold problems. Worse, stretch wrap can even cause the mold to transfer onto your product. No one wants that.

Here are some things to know if you are running into issues with pallet mold:

• Mold is Everywhere
  Mold spores are found everywhere. They’re just waiting around for the right conditions to grow. Pallet users need to make sure they are practicing proper storage and handling processes to avoid mold. These actions include maximizing air flow through pallets. Proper airflow allows pallet surfaces to dry, making them less favorable to mold growth.

• Stretch Wrap on Wood Pallets Facilitates Mold Growth
  One of the best (worst) ways to help mold grow is to wrap wood pallets with stretch wrap. Stretch wrap is an impermeable plastic cover that both restricts air flow and traps moisture. Even if the surface of the wood is dry to the touch, there is likely moisture locked deeper in the wood. As this moisture comes to the surface it can get trapped by stretch wrap. And just like that, you have created an ideal surface for mold growth.

• Hot and Humid Environments Contribute to Mold Growth
  Even if you store pallets in a covered and well-ventilated area, elevated temperatures and an increase in humidity (especially during summer months) can introduce mold growth. Mold thrives between 77 F and 86 F. Many locations across the US have average summer temperatures and sweltering conditions on par for mold growth.

How to Stop Mold Growth on Pallets

Now you know that wrapping your wooden pallets with stretch wrap can create the perfect storm for mold growth. Under some conditions, the moisture trapped within a stretch-wrapped load can spread mold on all packaging materials. Worse, there is the possibility that your product can get damaged by mold too. This can create cost issues.

The stretch wrap practices that worked during the winter may need to be modified for the summer. While it is possible to use stretch wrap in warmer temperatures, your unit load practices should be carefully monitored. This will help ensure your pallets and your products remain mold free.

Got Mold on your Pallets or Products?

You might need to reconsider your unit load methods, especially if conditions are ripe for mold growth. Need help? Let’s connect. Tell us about your pallet mold issue or ask questions below.