Patent ID: 8628865

Claim:
A method of producing sheets from renewable raw materials, comprising: making a mixture of renewable raw material with a binding agent, the binding agent comprising magnesium carbonate, magnesium oxide, water and glass beads; applying a layer of said mixture upon a conveyor belt and forming the applied mixture into an endless sheet on the conveyor belt; cutting the endless sheet into sections; removing marginal zones of said sections, the marginal zones each having a rough edge due to the cutting; processing said removed marginal zones into subdivided material and placing the subdivided material into said mixture, wherein protrusions or unevenness on surfaces of the layer after applying said mixture upon said conveyor belt are removed with a doctor blade, then a first air drying process of said mixture on said conveyor belt is carried out to form a partially dried endless sheet upon which said cutting into said sections is performed, then the partially dried sections are removed from the conveyor belt, each of said sections being a discrete partially dried sheet, and then air drying of the discrete sheets is completed.