A Beginner’s Guide To Corrugated Cardboard Packaging

Whether you’ve just started a business and are looking for a decent packaging options or need packaging material for the logistics of your goods, corrugated cardboards are perfect for both these scenarios.

Here’s a beginner’s guide on corrugated boxes and its types.

The liner: A flat material typically found on the inside and outside surfaces of the board

The medium: located between the liners. The medium creates a “U” shape which contributes massively to the strength of the board.

These sheets are glued together to create a corrugated box structure that is able to sustain bumps during long journeys. Corrugated boxes display a liner board and a fluted corrugated sheet.

The various types of flutes and sheets affect the strength and durability of a corrugated box.

Single Wall (sheet)

These boxes differ in durability and material strength. An ECT (Edge Crush Test) is used to determine the amount of pressure a box can endure.

Typically, single walled boxes are able to carry 20 ECT–58 ECT weights. Therefore, lighter single-walled boxes can at least carry 20 lbs.

Double Wall

Double and triple walled corrugated boxes are more durable compared to single walled boxes. However, these boxes aren’t as flexible as single walled. These boxes are ideal for storage because of its durable nature. The double-wall corrugated boxes have an ECT between 38 and 80.

Triple Wall

They have three corrugated sheets stacked facing four linerboards. Triple-walled boxes are the strongest. They are capable of carrying 300 lbs, with their ECT between the range 75 and 120.

Fluting

Fluting is responsible for strengthening the corrugated box material which affects the durability during shipping. Fluting can also be used in custom printing. These are the different types of flutes available:

A Flute

This was the first type of flute ever created. The common purpose of these flutes is wrapping and stacking. The A flute is about 5 mm thick.

B Flute

Stronger than it appears, the B Flute unlike its structure, is quite strong. They’re commonly used for die-cut boxes and counter displays. The B flute is about 3.2 mm thick.

C Flute

The C flute is a mixture of A and B flutes. This is the only all purpose flute available today. This flute is commonly used in shopping packages. The C flute is about 4mm thick.

E and F Flute

They are 1.6mm and 0.8mm in thickness respectively. These are the most recent flutes developed, which are often used for retail packaging because they provide better print image clarity.

If you’re in search of customized boxes for your shipping needs, get in touch with us at PremiumVials. We stock high-quality packaging solutions including corrugated boxes, zip lock bags, deep metal tins, concentrate jars and many more.