The History and Uses of Kraft Cardboard

What Is Kraft Cardboard?

Kraft cardboard and kraft paper are widely used in packaging because they offer significantly greater strength than standard paper materials. This strength comes from the specific pulping method used during production, known as the kraft process.

Manufacturers rely on softwood fibres, which are longer and more resilient than those found in many other wood types. During the kraft pulping process, wood chips are treated with a heated solution of water, sodium hydroxide (NaOH) and sodium sulphide (Na₂S). This method preserves fibre length, resulting in a tougher and more durable finished material.

Kraft paper is easily recognisable by its natural brown appearance, which is darker than conventional white paper. While this colour is a result of the process, kraft paper can also be bleached to produce a white finish when required.

The term “kraft” originates from the German word meaning “strength”, reflecting the material’s ability to support heavier loads compared to standard paper-based products.

A Brief History of Kraft Paper

Early forms of chemical pulping were already in use in the UK during the early 1800s. However, the modern kraft process was developed in 1879 by German chemist Carl F. Dahl. Over the course of the 20th century, improvements in manufacturing technology helped the kraft method become the dominant approach to paper and cardboard production.

While kraft paper has long been valued for its durability, it has gained renewed attention in recent years for its recyclability. As awareness grows around environmental impact and the responsible use of natural resources, recyclable packaging—particularly in the food and takeaway sector—has become an increasingly important consideration.

Common Uses of Kraft Cardboard

Kraft cardboard is used to produce a wide range of food packaging solutions. It provides the strength needed to protect food during transport while remaining lightweight and practical. Crucially, it is also widely recyclable, making it a popular choice for businesses focused on sustainability.

Applications range from small food cones for items such as chips or churros, to large carry packs designed to hold multiple meals. Kraft packaging adapts easily to different food types and serving formats.

Some of the most common examples include kraft burger boxes, which help keep food secure and presentable until it reaches the customer. Kraft pizza boxes are also widely used, offering insulation to maintain heat while safely transporting freshly baked pizzas.

Kraft Cardboard Packaging for Your Business

If you are looking to incorporate recyclable kraft cardboard food packaging into your business, ECCO Food Packaging offers a wide range of solutions to suit different needs. Browse our selection or get in touch with our team if you require guidance or further information.