Liquid packaging board is a multi-ply paperboard with high stiffness, strong wet sizing and a high barrier coating, e.g. plastic. Only virgin paper fibers are used. The barrier coating must hold the liquid and prevent migration of air and flavors through the paperboard.[1]
- ^ Paulapuro, Hannu (2000). "2". Paper and Board Grades. Papermaking Science and Technology. Vol. 18. Finland: Fapet OY. pp. 62–64. ISBN 952-5216-18-7.