IMPROVEMENT IN KRAFT LINERBOARD, BLEACHED KRAFT PAPERBOARD AND THERMOMECHANICAL PAPERBOARD FROM UNBLEACHED KRAFT PULP AND PAPERBOARD FROM SEMICHEMICAL MECHANICAL PULP AND SULFITEPULP

摘要

Both the wet strength and the folding endurance of kraft linerboard are improved by subjecting the board to steps of densification and high temperature treatment during its production.