The kraft process is a method used to produce pulp from wood chips, primarily for making paper. In this process, wood chips are cooked in a mixture of sodium hydroxide and sodium sulfide, which breaks down the lignin that binds the cellulose fibers together. This results in a stronger and more durable pulp. After cooking, the pulp is washed to remove the chemicals and any remaining lignin. The resulting product is then bleached if necessary, and can be further processed into various types of paper products. The kraft process is known for its efficiency and ability to recycle chemicals.