Pallet Shrink Hoods: PE Shrink Cover Buyer’s Guide

Meta description: Pallet shrink hoods protect loads outdoors and in transit. Gusset sizing, micron, venting and UV grade decide whether a cover survives the trip.

Table of Contents

• What Is a Pallet Shrink Hood?
• How Are PE Shrink Hoods Made?
• Gusseted, Tube and Perforated Formats
• Shrink Hood vs Stretch Wrap vs Shrink Bag
• Specifications Buyers Must Confirm
• Where Shrink Hoods Pay Off
• Common Buying Mistakes
• How to Evaluate a Hood Supplier
• Frequently Asked Questions
• Source Pallet Shrink Hoods from Pefilmpack

What Is a Pallet Shrink Hood?

A pallet shrink hood is a seamless PE cover, also sold as a shrink cover or pallet cap, that is dropped over a stacked load and shrunk with heat until it grips the pallet like a second skin. Unlike stretch film, which is wound around the load, the hood is applied in one piece, so the top face is covered as well.

That difference is commercial rather than cosmetic. A wrapped pallet has an open top; a hooded pallet is closed on five sides. For cargo that sits in a yard, travels on a flatbed, or waits weeks at a transshipment port, the closed top is what keeps rain, dust and roof condensation out of the cartons.

Buyers tend to compare hoods with stretch wrap on film cost per pallet. The more useful comparison is damage claims avoided, because a hood is a weather barrier while stretch film is a containment device. Both belong to the PE shrink film range that covers tube, sheet and hood formats.

How Are PE Shrink Hoods Made?

Hood production is tubular blown film production with two extra constraints: heavy gauge and controlled shrink tension. Each step below maps to a specification buyers later inspect.

1. Resin selection. LDPE and LLDPE blends set the balance between shrink force and tear resistance. More LDPE shrinks harder; more LLDPE tolerates rough handling. A supplier should be able to state the resin system in writing.
2. Additive package. UV stabilizer for outdoor service, slip agent so the hood opens easily, and antistatic where dust attraction matters. The UV package defines the months of sun exposure the hood is designed for.
3. Blown film extrusion. Resin is melted and inflated into a bubble; bubble size sets layflat width and haul-off speed sets gauge. Thickness variation here becomes uneven shrink and thin corners later.
4. Online thickness monitoring. Continuous gauge scanning holds the target micron across the full width, which is the parameter buyers check first with a micrometer.
5. Gusseting and cutting. The tube is gusseted into a rectangular footprint and cut to the ordered hood length.
6. Perforation, winding and inspection. Vent holes are punched where specified, hoods are stacked or rolled, then checked for gauge, gusset symmetry and seal integrity.

Gusseted, Tube and Perforated Formats

Three formats cover most orders, and choosing the wrong one is the most frequent specification error.

• Gusseted hoods. A tube with two side folds that open into a rectangle. This is the standard pallet format, because the footprint follows the pallet instead of a circle. Gusset depth and layflat width both have to be quoted.
• Plain tube or cap. No gusset, used for round or irregular loads and for open-ended shrink bags. Cheaper per meter, but it stretches diagonally over a square load and leaves slack at the corners.
• Perforated hoods. Vent holes release trapped air so the film seats instead of ballooning. Essential on tall loads, dense stacks, and any pallet handled soon after shrinking.

Color follows function: clear for load identification, white or black for light blocking, tinted grades to separate outbound routes. Heat behavior is covered in the PE shrink film buyer’s guide.

Shrink Hood vs Stretch Wrap vs Shrink Bag

Factor	PE shrink hood	Stretch wrap	Shrink bag
Coverage	Five sides, closed top	Sides only	Full enclosure
Weather resistance	High when UV-stabilized	Low; water pools on top	High, sealed
Typical thickness	80–200 micron	12–35 micron	60–150 micron
Application	Manual or automatic, plus heat	Hand or machine wrapping	Bagging plus heat tunnel
Relative film cost per pallet	Higher	Lower	Highest
Best fit	Yard storage, flatbed, export	Unitizing, dust control	Moisture-critical goods

Choose a hood when the top face is exposed and the load must survive rain or long dwell time. Stay with stretch wrap when the job is containment indoors and film cost per pallet dominates. Use a shrink bag when the requirement is a sealed barrier rather than a cover. Requirements may vary by application, market and applicable standard.

Specifications Buyers Must Confirm

Six numbers decide whether a hood fits, and all six are normally agreed between buyer and supplier rather than fixed by a single standard.

• Layflat width and gusset. Layflat should exceed the pallet’s longest side plus film allowance, and gusset depth should clear the pallet width so the hood drops over the corners without tearing.
• Hood length. Load height plus a skirt that reaches the pallet deck, commonly 100–150 mm, so the film can be shrunk under the top deck boards.
• Thickness. Heavier gauge resists puncture and wind but needs more heat. Lighter gauge shrinks faster and costs less per hood.
• Shrink performance. Free shrink in machine and transverse direction is measured under ASTM D2732; uneven MD/TD shrink pulls hoods off square.
• Mechanical strength. Tensile properties under ASTM D882 and dart impact under ASTM D1709 indicate how a hood behaves against a rough pallet corner.
• UV package and color. Outdoor service life depends on the stabilizer system, not on gauge alone.

Dimensioning follows the same logic used for wrapped loads in stretch film thickness and width selection: measure the load first, then choose the film.

Where Shrink Hoods Pay Off

• Open-yard storage. Building materials, bagged goods and machinery stored for weeks shed rain and block UV before the film itself degrades.
• Flatbed and breakbulk transport. Loads without a container roof face wind-driven rain; a shrunk hood stays put where a tarp flaps loose.
• Export container stuffing. Hoods limit condensation drip from container roofs during temperature swings on long sea legs.
• Cold and frozen storage. A hood keeps frost and ice off cartons during door openings, provided the film stays flexible at low temperature.
• Dust and hygiene-sensitive goods. Food ingredients, paper and electronics gain most from a closed top face.

Common Buying Mistakes

1. Ordering tube instead of gusseted hoods. The film will not sit square, and corners tear first.
2. Sizing to load height without deck overlap. No skirt means the hood lifts in wind and water runs underneath.
3. Skipping perforation on tall loads. Trapped air balloons the film, and the operator over-heats one side trying to make it seat.
4. Using indoor film outdoors. Without a UV package, the film embrittles and splits within weeks of sun exposure.
5. Buying on micron alone. A lighter hood with proper shrink tension and stabilization can outperform a heavier unstabilized one.
6. Ignoring the heat source. A hand torch and a shrink tunnel need different temperature windows and dwell times, as covered in shrink tunnel settings for PE and POF film.

How to Evaluate a Hood Supplier

Hood failures appear only after shipping, so verify process capability rather than promises.

• Gauge consistency. Ask for thickness across the width, not one center reading; thin corners cause splits.
• Gusset symmetry and seal quality. A skewed gusset shifts the whole hood on the pallet.
• Stated resin and stabilizer system. A supplier who cannot describe the UV package cannot support an outdoor claim.
• Shrink data. MD/TD free shrink values and the recommended shrink temperature window.
• Sample trial. Shrink one hood over a loaded pallet at your own site before committing to a container.
• Export packing. Hoods are bulky; confirm bale or carton compression, pallet height and container loading plan.
• Batch traceability. Lot marking lets you tie a field failure back to a production run.

Frequently Asked Questions

What thickness of shrink hood do I need for outdoor storage?

Most outdoor pallet hoods fall in the 100–200 micron range with a UV-stabilized resin. Heavier gauge buys puncture resistance, not UV life; the stabilizer package controls that. Confirm both with your supplier.

Can a shrink hood replace stretch wrap entirely?

Usually not. A hood covers the load but does not unitize it the way tensioned stretch film does. Many export operations wrap first for containment, then apply a hood for weather protection.

How much overlap should the hood have below the top deck?

A skirt of roughly 100–150 mm past the load base is common, so the film can be shrunk around the pallet deck. More wastes film; less lets water track underneath.

Do I need perforated hoods?

For loads taller than about 1.5 m, dense stacks, or pallets handled immediately after shrinking, yes. Vents let air escape so the film seats against the cartons instead of forming a balloon.

Can hoods be printed with our brand?

Printing is possible on PE hoods, typically one or two colors on the flat panel. Registration limits on heavy-gauge film differ from tape or light film, so approve a printed sample before production.

How should hoods be stored before use?

Keep them in a dry, shaded place away from heat sources and direct sunlight. Stacked hoods compress over time, so rotate stock and avoid storing more than a few months of consumption in warm conditions.

Source Pallet Shrink Hoods from Pefilmpack

Weishan Litong Packing Material Co., Ltd. produces PE shrink film and pallet shrink covers as a factory-direct supplier for importers, distributors and export packers. Layflat width, gusset depth, hood length, thickness, color and core format are made to order, with UV-stabilized and perforated options quoted on request. Hoods can ship together with PE shrink film and other packaging lines for consolidated container loading, and OEM brand printing is supported.

Send us: pallet length × width × load height, target micron, indoor or outdoor use, expected dwell time, hood quantity and destination port. Request a quote from Pefilmpack.