What is Corrugated Board and why is it used heavily in Packaging

1 February 2024 

Corrugated board, commonly known as corrugated cardboard, is a material widely used in the packaging industry for creating sturdy and durable boxes and containers. It consists of three layers: a wavy inner layer known as corrugate or fluting, which is situated between two flat outer layers called liners. The combination of these layers provides strength, rigidity, and insulation, making corrugated board an ideal material for packaging and shipping.

Here's a breakdown of the layers:

  1. Liners:

    • The outer layers of corrugated board are called liners. These are flat sheets that sandwich the corrugated or fluted inner layer.
    • Liners are typically made from paperboard, which is a thick type of paper known for its strength and durability.
    • There are different grades and types of liners, and they can be crafted from recycled materials or virgin fibers, depending on the desired characteristics of the corrugated board.
       

  2. Corrugate or Fluting:

    • The corrugated or fluted layer is the wavy inner section between the liners.
    • This layer provides strength and rigidity to the corrugated board, making it resistant to bending and folding.
    • The shape of the flutes also adds cushioning and insulation, which is advantageous for protecting contents during transportation.

The process of manufacturing corrugated board involves gluing the fluted layer between the flat liners, creating a composite material that combines the strength of the liners with the structural integrity of the fluting. The result is a versatile and lightweight material that is commonly used for shipping boxes, retail packaging, and various other applications.

Corrugated board is known for its recyclability and eco-friendly nature, making it a popular choice for sustainable packaging solutions. Its versatility, cost-effectiveness, and protective qualities have contributed to its widespread use across various industries.