Shipping might seem easy: pick a container, tape it, and ship it. The situation, however, is much more complicated for a business owner. The structural integrity of your product packaging will determine how safe its contents are and the image of your brand. The wrong corrugated boxes can squash items, lead to expensive returns, and leave customers dissatisfied.
Knowledge in box-strength science is not just trivia, but it is business knowledge. Whether shipping lightweight apparel or heavy industrial parts, having the correct grade ensures you deliver goods in good condition. This guide explains the terms so you can make informed choices in the supply chain.
What Are Corrugated Boxes?
Cardboard and corrugated are often confused; however, they are not the same. Cardboard is a heavy paper (e.g., a cereal box). Boxes made of corrugated material are designed to be strong and durable.
A corrugated sheet consists of three distinct layers that work together:
- Inside Liner: The flat paper on the interior.
- Outside Liner: The flat paper on the exterior.
- Fluting: The wavy, arch-shaped paper sandwiched in the middle.
The importance of box strength in shipping. Shipping is rough. A package may be thrown into a truck, loaded over heavy freight, or dropped in the last delivery. When your packaging is not up to par, the product inside is damaged.
Why Box Strength Matters in Shipping
Shipping is a rough process. A package can be thrown into a truck, be placed under heavy loads in a warehouse, or dropped during the final delivery. When your packaging fails, you can take a blow to the product inside.
The selection of the strength is a balancing thing.
- Under-specifying: Leads to damaged goods and replacement costs.
- Over-specifying: Wastes money on unnecessary materials and higher shipping weights.
You save on wastage and save on weight by choosing the appropriate strength, which will offer maximum protection. This makes sure that the act of unboxing is good for your customer rather than a letdown.
The Anatomy of Strength
To select the appropriate box, examine its construction on the wall. The degree of abuse a box can withstand is determined by its fluting layers.
Single Wall: Fluted between two liners. Most of the e-commerce packages follow this industry standard, which works with lightweight to medium-weight goods.
Double Wall: Two walls of fluting put on top of each other. Such corrugated boxes provide high-duty support and are suitable for heavier objects or for stacking.
Triple Wall: There are three layers of fluting. These boxes are very robust, may take industrial components, and can sometimes be substitutes for wooden crates.
How to Choose the Right Strength for Shipping
To understand whether a box is solid enough, it must have its test ratings on the box labels, also known as the Box Maker Certificate.
1. Know Your Tests: ECT vs. Mullen
Edge Crush Test (ECT): Measures stacking strength. A rating of “32 ECT” is the standard for general shipping.
Mullen Test (Bursting): Measures puncture resistance. A “200# Test” is roughly equivalent to 32 ECT but better for loose handling.
2. Read the Certificate
The bottom flap has a circular stamp that’s your cheat sheet. These labels give the necessary information, including the manufacturer, wall building, and strength rating.
Check the Limits
On the stamp, the largest gross weight and size capacity of the box are usually indicated.
Verify Compliance
The carriers can reject the insurance claim if the loaded items are damaged in a box that is not certified to support the load.
It is important to always check the box labels before packing a heavy shipment, just to make sure the carton used is rated for that weight.
ConclusionÂ
The last point of contact between you and your customer is shipping. That interaction remains positive as long as you understand your packaging’s capabilities. Do not take chances on product safety; check your load with the Certificate on the box labels to check compliance with the Box Maker.
Supply Bliss is there to assist you in choosing the right package in case you are willing to upgrade your shipping strategy with high-quality and reliable packaging solutions. We will give you the knowledge required to ship and ensure that all your packages are delivered precisely as intended.
