Polyvinyl alcohol is the use of advanced technology and processes, as the raw material of calcium carbide and acetylene production of vinyl acetate, methanol as solvent and AIBN as initiator, made by polymerization, alcoholysis process. Is a water-soluble environmentally friendly polymers, non-toxic non-polluting, has a very good film forming properties, emulsifying properties, bonding properties and spinning performance. It formed the film has excellent adhesion, solvent resistance, abrasion resistance, tensile strength and oxygen denial sexual. Polyvinyl alcohol have both hydrophilic and hydrophobic functional groups, interface-active substances, so polyvinyl alcohol as a polymer emulsion, suspension polymerization, the protective colloid.