The innovation concerns a sizing additive that SCA has developed to improve the production of water resistant, hydrophobic, paper. The additive can be produced in a green sustainable manner. The development work is still ongoing and no decisions have not been taken regarding commercialization.

With the new sizing additive it could be possible to replace the addition of commercial sizing agents in the paper production. The resulting paper exhibit improved water resistance and UV-light stability.

Since the depolymerized lignin can be produced from byproducts from a pulp mill the resulting sizing additive is sustainable and cost effective.

More about the new product
The product comprises a blend of depolymerized lignin and cationic polysaccharide which is added to a lignocellulosic pulp suspension containing aluminum salt at the wet end of the paper manufacturing process. The development work has been a collaboration between SCA R&D Centre and the Kraftliner business.