palletdesign.ai

Glossary

Block

Also called: pallet block, spacer block

Reviewed

Definition

A block is a rectangular, square or cylindrical spacer between the top and bottom decks of a block pallet, specified as width x height x length. Most block pallets use 9 blocks in a 3 x 3 grid; the EPAL 1 Euro pallet uses 145 x 100 x 78 mm and 145 x 145 x 78 mm blocks.

On this page
  1. How blocks are specified
  2. How many nails go into a block?
  3. Why blocks matter

How blocks are specified

  • Size: width x height x length (PDS draws them as W x L x H since version 5.7)
  • Count and layout: 9 in a 3 x 3 grid is typical; custom layouts are possible
  • Position names: corner, end, edge, inner and center
  • Material: solid lumber, laminated lumber, wood composite (presswood) or plastic
  • Grain orientation: sidegrain or endgrain nailing

How many nails go into a block?

The Uniform Standard (2012) calls for at least 3 fasteners at a corner block and 2 at an interior block, and at least one fastener per 8 sq in of block fastening surface. A typical wood block pallet uses 3 in annular nails through the stringerboard into the block.

Why blocks matter

Blocks leave open space on all four sides, so forks and pallet jacks can enter from any side. That is why block pallets are full four-way entry and why pooled and export pallets are mostly block designs. Composite blocks under the Uniform Standard must meet a density of 36.9 to 42.1 lb/cu ft and pass soak, tine-compression and nail tests.

Questions

How many blocks are on a block pallet?
Nine, in a 3 x 3 grid, on most block pallets including the EPAL Euro pallet and 48x40 pooled pallets.
What are pallet blocks made of?
Solid or laminated lumber, molded wood composite (presswood) or plastic. Composite blocks are common on export block pallets.

Sources