601990 A method to produce wood chips with the intention of reducing the energy consumption in the subsequent process steps for pulp production is disclosed. The method chips wood (1) in a wood chipper where the chipping tool (3) has an angle ? (4) within an interval of 75 degree to 105 degree between the fibre direction of the log and the side of the tool which faces the chip (2). Angles in this interval will cause an axially directed compression of the chip which will cause a cracking of the wood during chipping. This in turn will reduce the energy consumption in the subsequent process steps.
