News

Why Air Gaps in Packaging Lead to Damage

Written by Foam Industries | May 6, 2026 6:59:59 PM

You’ve probably had this experience before: You open a package and immediately notice how much empty space is inside. It feels off.

Whether it’s a bag of chips, a container of detergent pods, or a shipped product rattling around in a box, the reaction is the same. It feels wasteful. It feels inefficient. That instinct is usually right.That empty space isn’t just a visual problem: it directly affects how well packaging performs.

Why Is Empty Space in Packaging a Problem?

There’s a reason why companies do leave space in packaging. Air can act as a buffer during transit. Standard box sizes also play a role. It’s not always seen as practical to design a custom package for every produc/

On paper, that can make sense. But in reality, it’s often not enough.

The problem is that real-world shipping conditions aren’t gentle. When there’s open space inside a package, your product can move. And when it moves, it gets hit. Over and over again.

That’s how damage happens.

Most companies try to solve this with void fill. But that approach doesn’t fully control what’s happening inside the box.

In shipping, that problem leads to broken parts, returns, and wasted time.

Why Void Fill Doesn’t Fully Solve the Problem

Void fill materials are designed to take up space, but they don’t actually control movement in a reliable way.

Materials like paper, packing peanuts, and air pillows shift during transit. They can compress unevenly, settle over time, or be applied differently depending on who is packing the box. That means the level of protection changes from shipment to shipment.

There’s also no consistent way to measure how well void fill is performing. Without clear data, it’s difficult to predict outcomes or make improvements.

At that point, protection depends less on the packaging itself and more on how carefully someone packed it. That’s not a reliable process.

Related Content: Void Fill vs. Custom Foam Packaging: Pros and Cons

Why Custom Foam Inserts are the Better Option

Foam removes the guesswork. Instead of just filling space, it’s designed around the product itself. When products are heavy, fragile, expensive, or difficult to fit into standard packaging, the cost of damage goes up.

1. Foam Contains Air, But Uses It Strategically

Foam has air built into its structure. That allows it to compress and absorb impact, then return to shape. In this way, you get the best of both worlds: the advantage of air as a buffer, with protective packaging as a cushion.

2. Products Stay in Place

Custom-cut foam inserts are built to match the exact shape of your product. That means everything has a defined position inside the package. During transit, the product isn’t sliding, shifting, or making contact with other surfaces in the box. Instead of reacting to movement, the packaging prevents it from happening in the first place.

3. Protection Is Repeatable

Once a foam insert is designed, it performs the same way every time it’s used. There’s no variation based on how someone packed the box or how much material was added. That consistency makes it easier to predict outcomes, reduce damage rates, and maintain a stable packaging process as volume increases.

Related Content: Data-Driven Protection: Why Foam is the Science-Backed Choice

Foam becomes more valuable as the risk increases. That’s why foam is often used for things like retail fixtures, medical equipment, industrial components, and other products that are a mixture of heavy, valuable, and fragile.

Empty Space vs. Custom Foam Inserts

Let’s look at these two approaches side-by-side to get a clear picture of how they compare.

Empty Space

Custom Foam Inserts

Uncontrolled movement

Controlled positioning

Visible gaps

Custom fit

Inconsistent results

Repeatable protection

No performance data

Data-backed performance

 

The gap between these two approaches shows up quickly in real-world results. When packaging relies on empty space and loose materials, protection varies from shipment to shipment. When it’s built around the product, performance becomes consistent, predictable, and easier to manage over time.

Get Packaging That Actually Fits Your Product

Empty space creates movement. Movement leads to damage.

Foam replaces that empty space with a controlled solution that’s designed around your product from the start. If your current packaging leaves room for movement, there’s a better way to handle it.

Request a quote to see what a proper fit looks like.

Foam Industries is a custom protective packaging company specializing in foam – with additional wood and plastic fabrication services. Our custom foam fabrication services are ideal for any type of packaging, display, or support service needed – from design to finished product.