What Is Loose Fill Packaging and When Should You Use It?

If you’ve ever opened a parcel to find small foam or starch chips cushioning your order, you’ve already encountered loose fill packaging. It’s one of the most widely used void fill solutions in the UK — and for good reason. But understanding when it’s the right choice (and when it isn’t) can make a real difference to your packaging quality, costs, and environmental footprint.

Here’s everything you need to know.

What Is Loose Fill Packaging?

Loose fill packaging — also known as packing peanuts, void fill chips, or loose fill peanuts — refers to small, lightweight filler pieces poured into a box around a product to prevent it from shifting during transit. The chips occupy the empty space (or “void”) inside the carton, cushioning the item from all angles and absorbing impact from bumps, drops, and vibrations.

Traditionally made from expanded polystyrene (EPS), loose fill packing materials have evolved considerably. Today, the leading choice for UK businesses is biodegradable loose fill made from renewable plant-based starch — most commonly maize (corn) starch. Products like ECOFLO packing peanuts, available from Cloud Packaging, are manufactured from GM-free maize starch, making them 100% biodegradable, compostable, and independently proven to offer better protection than standard polystyrene chips.

How Does Loose Fill Packaging Work?

The science behind loose fill is simple but effective. When you pour the chips into a box and place your product on top (or bury it within), the pieces interlock and settle naturally around the item’s contours. This conforming action creates multi-directional cushioning — meaning the product is protected from impacts coming from any direction.

Unlike bubble wrap or foam inserts that must be custom-cut or folded, loose fill adapts to any shape. Irregularly shaped items, components with protruding parts, and products of varying sizes can all be accommodated without any specialist preparation.

Types of Loose Fill Packaging

1. Biodegradable / Starch-Based Packing Peanuts The modern standard for eco-conscious businesses. Made from maize or corn starch, these chips are:

• Fully compostable (certified to EN13432 standard)
• Water-soluble — simply dissolve them under a tap or in a sink
• Antistatic — up to five times more effective than polystyrene at protecting electronic equipment from static damage
• Lightweight, odour-free, and reusable

Cloud Packaging’s ECOFLO loose fill packing peanuts are available in 5, 7.5, and 15 cubic ft bags, giving flexibility for businesses of all sizes.

2. Polystyrene Loose Fill The traditional option. Effective for cushioning but no longer preferred by most modern shippers due to its environmental impact — polystyrene is not biodegradable and creates significant landfill waste.

When Should You Use Loose Fill Packaging?

Loose fill is particularly well-suited to specific situations. Here’s when it makes the most sense:

Fragile or Breakable Items

If you’re shipping glassware, ceramics, ornaments, or other delicate products, loose fill excels at surrounding the item completely, filling every gap and absorbing shock from all angles. The conforming nature of packing peanuts means there’s no hard surface for your product to collide with.

Irregularly Shaped Products

Custom foam inserts or bubble wrap can be awkward to use with unusually shaped items. Loose fill simply pours in and settles around any form, making it one of the most versatile void fill options available.

Electronics and Antistatic Applications

Starch-based biodegradable peanuts carry natural antistatic properties. This makes them an excellent choice when packing sensitive electronic components, circuit boards, or devices — without the need for separate antistatic packaging materials.

Variable-Size Orders

If your products vary in size from order to order, maintaining stock of pre-formed foam inserts or cut-to-size bubble wrap becomes impractical. Loose fill can be used across different box sizes without any adjustment — simply use more or less depending on void space.

Eco-Conscious Businesses

If your brand values sustainability, biodegradable loose fill ticks the box without compromising on protection. Unlike polystyrene, starch-based peanuts can be composted at home, dissolved in water, or disposed of in green waste — leaving no microplastics or harmful residues.

When Might Loose Fill Not Be the Best Choice?

Loose fill isn’t always the optimal solution. Consider alternatives in these situations:

• Very heavy items: Products with significant weight may compress the chips excessively, reducing cushioning effectiveness. Combination solutions (foam pads plus loose fill) may work better.
• Liquids or hazardous materials: Vermiculite or specialist containment packaging is more appropriate in these cases.
• High-volume automated packing lines: If you’re running a high-speed fulfilment operation, paper void fill dispensers or air pillow machines may be faster to apply consistently.

How Much Loose Fill Do You Need?

A common rule of thumb is to ensure at least 5–7.5 cm (2–3 inches) of loose fill on all sides of the product. Place a layer at the base of the box first, position your item, then fill around and above it until firmly packed. Give the box a gentle shake — if the product moves, add more fill.

Cloud Packaging’s ECOFLO packing peanuts are sold by cubic footage (5, 7.5, and 15 cu ft bags), making it easy to scale your order to your dispatch volume.

Environmental Considerations

With legislation and consumer expectations around packaging sustainability tightening across the UK, choosing a biodegradable loose fill over polystyrene is increasingly important. The ECOFLO product carried by Cloud Packaging is:

• EN13432 certified compostable
• Made from renewable maize starch (not fossil fuels)
• Water-soluble — your end customer can simply dissolve used chips in a sink
• Free from microplastics

This makes it not only a protective packaging solution, but one that supports your sustainability commitments and reduces customer guilt about disposal.

Summary

Loose fill packaging is one of the most versatile, cost-effective, and easy-to-use protective packaging solutions available. Whether you’re dispatching fragile homeware, electronic components, or irregularly shaped products, packing peanuts provide reliable all-round cushioning with minimal effort.

Opting for a biodegradable, starch-based option like ECOFLO means you’re protecting your products and the environment — without any trade-off in performance.

Explore Cloud Packaging’s ECOFLO Biodegradable Loose Fill Packing Peanuts — available in 5, 7.5, and 15 cubic ft bags with free UK delivery.

Frequently Asked Questions