Cartonboard is made from different types of pulp or from a combination of different types of pulp. The most commonly used types of pulp are as follows:
Chemical Pulp – In the production of chemical pulp, cellulose fibres are extracted from wood by cooking the wood chips in chemical solutions
Mechanical Pulp – In the production of mechanical pulp, cellulose fibres are extracted from wood by a grinding and refining process.
Recycled Fibre Pulp – Recycled fibre pulp is produced by using previously manufactured material based on cellulose fibres. For cartonboard, suitable sources of recycled fibre are waste from paper and board production and collected paper and packaging.