The invention relates to an insulation material board composed of a wood materialbinder fiber mixture and to a method for producing an insulation material board, in which an additive with a thermally resistant core and with a thermally activatable coating is added to the mixture, and the thermally activatable coating is activated by the supply of heat. The suction duct acts as a shutter-valve, i. An annealing process is then performed. A payment source selector is set upon receiving a payment source selection to indicate a selected one of the payment sources.