Fecha de publicación: 08/12/2022 Fuente: WIPO "hemp" The invention relates to a laminated building material comprising a) a first layer of a suitable material, such as solid wood, metal, or engineered wood, and with a thickness of at least 20 mm, b) a second layer of a suitable material, such as solid wood, metal, or engineered wood, and with a thickness of at least 20 mm, and c) a third layer with a thickness of at least 20 mm, interlaid between and fastened to said first and second layers, being diffusion-open to water vapor, and made from an organic fiber material, such as hemp fibers, wood fibers, and/or flax fibers, said material having a density within the range of 20-300 kg per cubicmeter.