Five Considerations for Blow-Molded Pallets

1. Match the parison and mold

Review the parison size and distribution against the pallet geometry. The head, mold and forming sequence need to deliver material to the critical parts of the product. Establish the settings in a controlled trial and assess the finished pallet rather than relying on a nominal machine size.

2. Select the material for the application

The original article uses HDPE as an example. Specify material for the required impact, load and environmental conditions. Any use of regrind should be controlled and evaluated on the finished product.

3. Review the plasticizing system

Screw and barrel design affect material preparation and delivery to the die head. Match the plasticizing arrangement to the chosen material and the quantity of material required by the product.

4. Design the mold and reinforcement together

Consider the pallet’s load paths, ribs, forming depth, release angles and mold cooling. The design should support the required performance and allow consistent molding and part removal. More reinforcement is not automatically a substitute for testing the finished design.

5. Control scrap and verify the result

Define a consistent material-handling and regrind procedure. Record the blend and molding conditions used in the trial, then evaluate the pallet against the agreed dimensional, appearance and load requirements.

Discuss the complete pallet project

Share the pallet drawing, intended load and handling conditions, material and output requirement. Explore large panels and pallets for related equipment.