5 Top Trends in the Packaging Industry | Goodline Box

The corrugated material is considered the best among box packaging around the world. Corrugated boxes have more strength and durability than regular cardboard boxes. Hence, they are a preferred packaging option for shipping retail, commercial, and industrial goods.

Let’s understand how corrugated boxes get their strength and durability.

Composition of Corrugated Boxes

A corrugated box is made from paper sheets which have two key components:

Liner board

This is a flat cover that forms the outer layer of both sides of the sheets.


This is a wavy layer, also called a flute in the centre of both liners.

The flute is attached to the linerboards with a starch-based adhesive. It is the foundation of the box. This gives it a sturdy structure that can easily withstand pressure from all directions. This structure gives strength and durability to the box, making it popular for transporting products.

Type of Paper

The types of paper used to make corrugated cardboard boxes in Canada also determine their strength and durability. The most commonly used paper types are:

Kraft Paper

This paper is used to make the outer liner of the box. Though it is pricey, its superior quality and strength make it worth the cost. It has better water, rip, and burst resistance. Virgin pulp fibre makes up 70-80% of its composition. This fibre is harvested from pine, fir, spruce, and other such softwood trees. It has a smooth texture which makes it suitable to print any text or graphic on it.

Kraft paper comes in several textures and colours, making it easier for customization. For example, food and beverage companies prefer Kraft paper-made die cut packaging to deliver their products. These companies can print their brand name, logo, and other information on these die cut corrugated boxes.

Test Paper

The test paper doesn’t match Kraft paper in properties. However, it has double layers which are suitable for the inside liner.

Flutes are a C-shaped wavy pattern that makes conventional cardboard boxes ‘corrugated’. Flutes have different thicknesses and they come in five shapes and heights – A, B, C, E, and F.

A flute is the thickest while an F flute is the thinnest. B flute is used for custom die cut packaging while the C flute is used for regular slotted container boxes. E flute makes it easy to print on.


The wall thickness of corrugated cardboard boxes also ascertains their strength and durability. There are three main types of walls:
Single Wall
It is the most basic form of a corrugated box. A sheet of corrugated medium is anchored between two sheets of a liner board.

Double Wall
It has an extra liner board and flute which gives it more toughness than a single wall. However, it is less flexible than a single wall.

Triple Wall
It is made from four liner boards with three stacked sheets which makes it more robust than the single wall and double wall.

In a nutshell, the more walls a corrugated box has, the more resistance it has and the more protection it will offer.

Testing of Corrugated Cardboard Boxes Canada

Corrugated boxes undergo testing to ensure their durability and strength. Here are some common methods:

  • Box Compression Test
  • Paper Grammage and Thickness
  • Water Resistance of the Gluing
  • Bursting Strength Test
  • Edge Crush Test 2 Single
  • Cobb Sizing Tester
  • Puncture Resistance
  • Scuff Resistance Test
  • Chemical Analysis in Corrugated Box Testing

We at Goodline Box ensure that our corrugated cardboard boxes meet strength and durability parameters to give maximum protection to your goods. We can customise these boxes as per your business needs. We are a small family owned business based in Surrey, BC – serving customers across Metro Vancouver, Interior BC Regions, Kamloops, Kelowna and many cities in Alberta. Understanding our customers’ business requirements is our priority and we customise packaging solutions as per their requirements.

Get in touch with us to know more.

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