Why Wrapping Matters More Than You Think
Stretch wrapping isn't just about holding boxes on a pallet — it's a critical step in shipment integrity. A poorly wrapped pallet is a liability. Loads shift during transport, products get damaged, pallets arrive leaning or collapsed, and customers file claims. According to industry data, improper load securement is a contributing factor in over 25% of in-transit product damage incidents.
The good news: proper wrapping technique dramatically reduces these failures and costs almost nothing extra when done correctly.
Hand Wrapping vs Machine Wrapping
Hand wrapping uses a hand-held roll of stretch film. Workers walk around the pallet, applying film from bottom to top. It's labor-intensive and results vary depending on the operator's technique, but it requires no capital investment and works well for low-volume operations (fewer than 15–20 pallets per day).
Machine wrapping uses a turntable or rotary arm wrapper. The pallet sits on the turntable (or stands still while the arm rotates around it), and the machine applies film with consistent tension, overlap, and coverage. Machines are faster, more consistent, and use less film per pallet. For operations wrapping 20+ pallets daily, a machine pays for itself within months.
The Proper Technique for Hand Wrapping
- Start at the base: Anchor the film to the pallet itself, not just the load. Wrap the film around the bottom of the pallet (below the bottom deck board if possible) for the first 2–3 rotations. This locks the load to the pallet so they move as one unit.
- Work upward in a spiral: Overlap each layer by 50%. Moving up with less overlap creates gaps where the load can shift. Think of it like wrapping a bandage — consistent, even coverage.
- Maintain tension: The film should be stretched 100–200% during application. Too loose and it provides no containment force. Too tight and it can crush products or warp the load.
- Pay attention to corners: Corners are where film is most likely to tear. Slow down at corners and add extra film where the wrap transitions around edges.
- Top it off: When you reach the top, make 2–3 additional wraps at the top to seal the load. Then work back down 12–18 inches before cutting and tucking the film tail.
- Use a top sheet if needed: For loads that need protection from rain, dust, or UV, add a top cap or sheet of film over the top before the final wraps.
Film Selection
Not all stretch film is created equal. Key specifications include:
- Gauge (thickness): Standard hand film is 70–80 gauge. Machine film runs 60–90+ gauge. Thicker film provides more containment force but costs more per foot.
- Pre-stretched vs standard: Pre-stretched film has been mechanically stretched during manufacturing, making it easier to apply by hand with consistent tension.
- Clarity: Clear film lets scanners read barcodes and labels through the wrap. Opaque or tinted film provides security for high-value loads.
Common Wrapping Mistakes
- Not anchoring to the pallet: If the film only wraps the product and not the pallet itself, the load can slide off the pallet during transport.
- Insufficient layers: Most loads need a minimum of 3–4 complete wrap rotations. Heavy or unstable loads may need 5–6.
- Wrapping a bad stack: No amount of film will save a poorly stacked load. Products should be stacked in a stable, interlocking column pattern before wrapping begins.
- Ignoring the bottom rows: The bottom of the load bears the most weight and stress. Apply extra film to the lower third of the load.
Wrapping Is Part of the System
Stretch wrapping works in concert with your pallet quality, stacking pattern, and transport method. A well-wrapped load on a damaged pallet will still fail. A perfect pallet under a poorly stacked, unwrapped load will still shift. Every element of the system needs to work together for secure shipping. Universal Pallet Supply provides the pallet foundation — make sure you're completing the system with proper wrapping.