An emulsified form of hydrogenated rosin that can be used as a size for paper with only minimal use of alum as a flocculating agent. Bewoid size was developed by B. Wieger in Germany. It can be added directly to the pulp mixture and requires only small amounts of alum for precipitation on the cellulose fibers. Since bewoid size minimizes the amount of alum, the possibility of excess alum forming sulfuric acid is also minimized.
- E.J.LaBarre, Dictionary and Encyclopedia of Paper and Paper-making, Swets & Zeitlinger, Amsterdam, 1969