Question: how pva glue is made?
Answer: Polyvinyl acetate and polyvinyl alcohol PVA is used as an emulsion adhesive for bag, sack and carton making. PVOH is produced by hydrolysis of PVA and the strong hydrogen bonding imparted by the –OH groups means that pure PVOH is water soluble. The degree of water solubility is controlled by the amount of hydrolysis.