Definition
The base material from which a pallet or pallet component is manufactured. Common pallet substrates include solid wood, plywood, oriented strand board (OSB), plastic, metal, and corrugated fiberboard. The substrate selection affects a pallet's weight, strength, cost, durability, environmental profile, and regulatory requirements. Each substrate offers a distinct set of advantages and limitations for different supply chain applications.
Related Terms
Engineered Wood
Manufactured wood products created by binding strands, fibers, or veneers of wood together with adhesives to form composite materials. Examples relevant to the pallet industry include oriented strand board (OSB), plywood, and laminated veneer lumber (LVL). Engineered wood products can offer consistent properties, efficient use of raw materials, and in some cases exemption from ISPM-15 if sufficiently processed. They are increasingly used in specialty pallet applications.
Oriented Strand Board
A type of engineered wood panel made from compressed layers of wood strands bonded with resin. OSB is used in pallet construction as a deck material, providing a smooth, solid load-bearing surface at lower cost than solid hardwood. OSB deck panels offer consistent thickness and are free of knots and voids. Since OSB is a processed wood product, pallets made entirely from OSB may be exempt from ISPM-15 requirements depending on the adhesive and manufacturing process.
High-Density Polyethylene
A thermoplastic polymer (HDPE) commonly used to manufacture plastic pallets. HDPE pallets are lightweight, moisture-resistant, impervious to insects and mold, and exempt from ISPM-15 phytosanitary requirements. They are commonly used in pharmaceutical, food processing, and clean-room environments where hygiene is paramount. HDPE pallets can be injection-molded or structurally formed and are fully recyclable at end of life.
Corrugated Pallet
A pallet constructed primarily from heavy-duty corrugated fiberboard rather than wood or plastic. Corrugated pallets are lightweight, recyclable, and exempt from ISPM-15 phytosanitary requirements since they are not solid wood. They are suitable for lighter loads and one-way shipping applications, especially in export markets where avoiding wood treatment costs is advantageous. However, they have lower load capacity and moisture resistance than wood pallets.
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