How to Reduce Shipping Damage: A Packaging Checklist for Corrugated Boxes

Nearly one-quarter of consumers will stop buying from a brand after just one negative experience, and 60% received a damaged item after shopping online in 2024. When you factor in the additional processing costs per return, it’s clear that proper packaging protects both your bottom line and your brand. 

Establishing the right corrugated box specifications, cushioning protocols, sealing standards and labeling requirements helps your business reduce shipping damage and preserve customer satisfaction.

1. Select the Right-Sized, Right-Strength Corrugated Box

To reduce shipping damage, your packaging checklist for corrugated boxes should start with selecting the right size and strength. If this foundation fails, no amount of internal cushioning can protect your products throughout the supply chain. 

Establish Corrugated Box Strength Standards

The strength of a corrugated box depends on the wall construction and certified strength ratings. Understanding these specifications helps your business choose an option that can withstand the conditions your shipments will encounter during transit.

Two primary types of corrugated boxes are:

Single-wall: One layer of fluting sits between two linerboards, providing adequate protection for lighter products traveling shorter distances.
Double-wall: Two layers of fluting and three linerboards provide extra strength. Double-wall construction works well for heavy products, fragile contents and shipments traveling through multiple distribution centers. 

The circular certificate stamp on a corrugated box indicates its tested strength rating. There are two main tests: 

Mullen Test: This test measures the pressure, in pounds per square inch, that the corrugated box walls can withstand before puncturing. It is expressed as a number followed by a pound sign (e.g., 200#). It helps assess the corrugated box’s resistance to direct impacts and rough handling while sorting and loading.
ECT Test: This test measures the load capacity of a corrugated box when stacked, expressed in pounds per inch. It predicts how well a package will survive the supply chain, since a corrugated box spends significant time stacked in warehouses and in delivery vehicles.

This table shows the general guidelines to consider:

Define Corrugated Box Sizing Requirements for Your Operations

Each item’s length, width and height at the widest points will determine the correct size for a corrugated box. This approach helps you select corrugated boxes that provide adequate space for cushioning while minimizing excess interior volume.

Corrugated boxes that closely match the product dimensions help immobilize contents during transit and reduce the risk of crushing during shipping. Proper sizing also helps avoid dimensional-weight penalties, as carriers calculate shipping costs based on the actual weight or the dimensional weight, whichever is greater. 

Following packaging best practices for corrugated box selection supports proper protection of fragile items while helping control freight costs across your distribution network.

Eliminate Box Reuse Across Your Facilities

Used corrugated boxes may appear identical to new ones, but their structural integrity has already been compromised. Each shipment weakens the corrugated material through repeated stress on the flutes and linerboards. Humidity exposure during storage and transit further degrades the paper fibers. Plus, previous tape removal can damage the outer liner. 

A reused corrugated box that fails incurs several expenses, including:

The value of the product 
Return logistics and processing
Replacement shipping costs

It can also impact potential customer lifetime value (CLV), as 67% of customers will avoid buying from a business again after a negative return experience. Using a new, custom-sized corrugated box costs far less than the product and customer relationship it protects. 

2. Establish Cushioning Protocols That Immobilize Products 

Proper cushioning creates a suspension system that prevents items from touching the walls of the box and absorbs impact. It helps keep products completely stationary throughout transit.

Require a Protective Buffer Zone

As a general guideline, there should be at least 2 inches of cushioning material between the product and every corrugated box wall. This space creates a protective buffer zone that helps the item better withstand the impacts, compression and vibration that occur during shipping. 

However, the optimal amount of cushioning can vary based on the product’s fragility, weight and the specific cushioning material used. Highly fragile or heavy items may require more extensive cushioning or specialized packaging solutions. After packing, your team should gently shake the sealed corrugated box. If they hear or feel the product moving, it’s best to add more cushioning material.

Standardize Cushioning Material Selection

Different cushioning materials serve different protective functions. Your procurement decisions should match material properties to the products’ vulnerability points and shipping conditions.

Bubbled wrap: This material provides excellent impact protection for irregular shapes and fragile surfaces. The air-filled bubbles effectively absorb shocks, helping prevent shipping damage. Delicate items should be wrapped completely, and heavier items should be wrapped in large bubbles. 
Packing peanuts: These can conform to irregular shapes and fill void spaces around multiple items shipped in a single corrugated box. They provide cushioning from all angles and settle around products during transit. Because peanuts offer less structural support than corrugated pads and can shift during handling, they are better suited for lighter items that don’t require rigid positioning.
Air pillows: These fill void space efficiently and provide light cushioning for non-fragile items. They work well as top layers or for surrounding pre-wrapped products. Air pillows compress under heavy products, so they’re not suitable as primary cushioning for weighty items.
Kraft paper: Crumpled kraft paper provides moderate cushioning for semi-durable goods. It’s suitable for filling smaller gaps after primary cushioning is in place, but doesn’t provide the same high-impact protection as bubbled wrap.
Corrugated pads: These are excellent when products need rigid separation or reinforced protection. Corrugated pads create strong, flat surfaces, preventing sagging and evenly distributing weight. Pads can be placed between stacked items, along the bottom to reinforce the base or against the corrugated box walls to add rigidity.

Combining materials often prevents shipping damage better than using a single cushioning type. Establish standard packing protocols, starting with corrugated pads to create rigid boundaries, wrapping fragile items in bubbled wrap and filling the remaining voids with air pillows or kraft paper.

Specify Edge, Corner and Surface Protection Requirements

Impact damage concentrates at edges and corners because these points make first contact during drops and collisions. Products with defined corners, such as framed items, electronics or corrugated boxes containing other boxes, need reinforced protection at these vulnerable points. 

Options include: 

Corner and edge protectors: Corner protectors made from corrugated material slide over product corners to distribute impact forces across a larger surface area. Edge protectors run along the edges of the item to help prevent crushing damage during handling and stacking.
Glass and screen surfaces: Corrugated pads placed directly against glass or screen surfaces reduce the risk of compression caused by contact between the item and box walls. This rigid barrier maintains protection integrity throughout transit.
Protruding elements: Products with handles, knobs or antennae require individual wrapping to prevent internal punctures. Your packing protocols should position these elements toward the center of the corrugated box rather than toward the walls, where impact forces concentrate during carrier handling.

3. Implement the H-Taping Method for Secure Sealing

Proper sealing helps maintain the corrugated box’s structural integrity throughout its journey. The H-taping method provides seal strength to prevent shipping damage.

Specify Tape Requirements for Seal Strength

Pressure-sensitive plastic tape provides the adhesive strength and tear resistance needed for shipping. It firmly adheres to corrugated surfaces and resists temperature changes and humidity that packages encounter during transit.

Several common tape types typically fail under shipping conditions and should be avoided:

Masking tape loses adhesive strength when exposed to temperature variations. 
Cellophane tape lacks sufficient width and adhesive power for corrugated box sealing. 
Duct tape seems strong but doesn’t adhere well to corrugated surfaces and leaves residue. 
Water-activated paper tape creates strong seals but often requires specialized application equipment.

The tape width matters too. Narrow tapes concentrate stress along a narrower bond line, increasing the likelihood of seal failure when corrugated boxes are subjected to rough handling.

Make the H-Taping Method Standard

The H-taping method reinforces all critical stress points where flaps meet. It prevents flaps from separating under the weight of stacked corrugated boxes or the pressure of shifting contents. 

Three strips of tape should be applied to both the top and bottom of each box. One strip runs down the center seam where flaps meet, while the two other strips cross the edge seams where side flaps join the top flaps. The center strip helps prevent the main seam from opening, while the cross strips lock flaps together and reinforce corners where stress concentrates.

Heavy packages or shipments traveling long distances benefit from additional reinforcement. A perimeter tape band applied completely around the corrugated box at the seam line acts as a structural belt, holding the package together even if individual strips begin to fail.

4. Ensure Clear and Accurate Labeling

Clear, properly placed shipping labels enable carriers to route packages efficiently through logistics management systems, supporting on-time delivery and customer satisfaction.

Set Label Placement Standards for Scanning Accuracy

Shipping labels belong on the largest, flattest surface of the corrugated box. This placement provides maximum visibility for both automated scanning systems and human handlers. The top surface of the corrugated box typically offers the best location. If this isn’t possible, use the longest side panel.

Establish labeling protocols that avoid these common placement issues:

Over seams or tape: Labels placed where tape meets cardboard create reading errors for barcode scanners. These uneven surfaces prevent proper adhesion and scanning. Mis-scanned packages may be sent to manual sortation, delaying delivery and increasing handling costs.
Near edges: Box edges are most prone to handling damage during transit. Labels placed near edges are more likely to tear or become obscured and may require manual processing or re-labeling at carrier facilities. This can add days to delivery timelines.
On curved or flexing surfaces: Curves and flex points distort barcodes and prevent scanners from reading them accurately. Establish protocols requiring labels only on rigid, stable areas.
With bubbles or wrinkles: Labels must lie completely flat with no bubbles, wrinkles or lifted corners. These imperfections interfere with barcode scanning. Labels should be smoothed from the center outward during application and replaced if they don’t adhere properly.
Over old labels: Multiple visible barcodes confuse automated sorting systems and can send your shipment to the wrong destination. Make sure old shipping labels and barcodes are completely removed or covered before applying new ones.

Require the Duplicate Label Protocol for All Shipments

Corrugated boxes scraping against conveyor belts, packages sliding against each other in trucks, and exposure to the elements during loading can all render exterior labels unreadable. When carriers can’t identify a package’s destination, it enters exception processing. This can delay delivery by days or weeks.

A simple backup system helps prevent this problem. A duplicate shipping label should be placed inside the package before each box is sealed, affixed to the interior of the top flap or to the product’s outer packaging. If the exterior label becomes damaged or detached, carriers can open the package, locate the duplicate label and continue delivery. 

Your packaging protocols should also include placing a return address inside each package. If both labels become damaged and the carrier must return the package, this interior information ensures it reaches your facility rather than entering the lost package processing system. For high-value shipments, a printed packing slip with full address details for both the sender and recipient can help minimize handling delays.  

Partner With Custom Boxes Now to Protect Your Shipments

The right-sized, right-strength corrugated box is the first step to reducing shipping damage. Every other protective measure depends on the structural integrity of the primary container.

Custom Boxes Now has been engineering corrugated boxes tailored to product dimensions and shipping requirements for more than 60 years. Our facility can assist with structural design and choosing between printing methods. We proudly maintain an over 99% on-time delivery rate and hold International Organization for Standardization (ISO) 9001:2015 certification for quality management.

Use our online box builder tool to start exploring options, or contact our team today. We’ll guide you through selecting the specifications that best protect your products during shipping.