multilayered fibrous sheet, a method for making a multilayered fibrous sheet, and use of mechanical pulp

摘要

According to an example aspect of the present invention, there is provided a multilayered fibrous sheet, such as paperboard, having a first layer comprising a first fibrous material, a second layer, spaced apart from the first layer, comprising a second fibrous material, and a third layer between the first and the second layers, comprising a third fibrous material, wherein at least one of the first and the second fibrous materials comprises or consists of a mixture of chemical pulp and mechanical pulp; and the third fibrous material comprises or consists of mechanical pulp.