A gaylord box without a liner is like a house without a roof — it works, but only under ideal conditions. Liners extend the functionality of gaylord containers far beyond basic dry storage, enabling their use in food processing, pharmaceutical, agricultural, and electronics applications.
Why Use a Liner?
Liners serve multiple purposes:
Moisture Protection: Corrugated cardboard is porous. Even a small amount of moisture can compromise both the contents and the container's structural integrity. Poly liners create a waterproof barrier.
Contamination Prevention: For food, pharmaceutical, and cleanroom applications, liners prevent direct contact between contents and the corrugated walls.
Containment: Liners prevent small items, liquids, and fine powders from escaping through gaps in the gaylord's construction.
Cleanliness: Liners are much easier to replace than gaylords. Between loads, simply swap the liner — the gaylord stays in service.
Types of Gaylord Liners
Polyethylene (PE) Liners The most common type. Available in multiple thicknesses:
- 1–2 mil: Light-duty protection. Suitable for dust protection and light moisture barrier.
- 3–4 mil: Standard industrial use. Good moisture protection, adequate puncture resistance.
- 6+ mil: Heavy-duty. For sharp or heavy contents, outdoor exposure, or extended storage.
PE liners come in clear (for visibility), black (for UV protection), and colored (for product identification) options.
Food-Grade Liners FDA-compliant liners made from virgin polyethylene (not recycled). Required for any food-contact application. These liners: - Meet FDA 21 CFR 177.1520 requirements - Are manufactured in food-safe facilities - Come with certificates of compliance - Are available in both standard and custom sizes
Anti-Static Liners For electronics, circuit boards, and static-sensitive components. These liners contain conductive additives that dissipate static charges, preventing electrostatic discharge (ESD) damage.
Pink poly (anti-static) and metallic (static-shielding) options are available. Anti-static liners should meet ANSI/ESD S541 standards.
VCI Liners Vapor Corrosion Inhibitor liners release chemical vapors that coat metal surfaces and prevent rust and corrosion. Ideal for: - Metal parts storage - Automotive components - Machine parts in long-term storage - Export shipments with extended transit times
Insulated Liners Multi-layer liners with insulating properties for temperature-sensitive contents. Used in: - Pharmaceutical cold chain - Perishable food distribution - Chemical storage - Temperature-controlled manufacturing
Sizing Your Liner
Gaylord liners should extend approximately 4–6 inches beyond the top of the gaylord on all sides. This provides enough material to fold over the contents for protection.
Standard liner sizes for common gaylords:
| Gaylord Size | Recommended Liner Size |
|---|---|
| 48×40×36 | 55×45×73 (folded flat) |
| 48×40×48 | 55×45×97 |
| 48×40×24 | 55×45×49 |
Most liners are sold flat-folded in cases of 25–100 units.
Installation Tips
- Open the liner fully inside the gaylord before loading contents
- Smooth the liner against the walls and bottom — air pockets can cause shifting
- For heavy or sharp contents, consider double-lining for puncture protection
- Fold excess liner material over the top of the contents before closing the gaylord cap
- Secure the liner fold with tape if the gaylord will be transported
Cost and Sourcing
Standard PE liners cost $1–$5 each depending on size and thickness. Specialty liners (food-grade, anti-static, VCI) run $3–$15 each.
At EcoBoxes NY, we stock standard PE liners in all common gaylord sizes and can source specialty liners within 3–5 business days.