Paper Making Industry

Since for the first time illiquid used rosin size together with alum for paper sizing in 1807, papermaking has been one of the largest gum rosin consuming branches in industry. Sizing agent made from gum rosin can prevent ink from dispersion, improve the strength and smoothness and enhance abrasion resistant of the paper. It can also prevent paper from absorbing too much water and avoid hair slip while printing. Crystal rosin is not suitable for making gum rosin size because crystals are difficult for saponification, they might form stains on the paper and jam the pipes in the production of gum rosin size.