IFJ_112019_kelheim3jpg Ken Norberg January 15, 2020 131 Views Figure 3. Transparency of a sheet of pulp/viscose (left) compared with a sheet made from Leonardo fibers (right). Courtesy of Kelheim Fibres/Ingo Bernt Figure 3. Transparency of a sheet of pulp/viscose (left) compared with a sheet made from Leonardo fibers (right). Courtesy of Kelheim Fibres/Ingo Bernt