Polyvinyl butyral (PVB) is a kind of synthetic resin made from polyvinyl alcohol and butyral aldehyde by condensation reaction.It can be Soluble in methanol, ethanol, and ketones, aromatic solvent.The PVB has high transparency, good cold resistance, water resistance, film forming properties and impact resistance. widely used in middle film of glass, ceramic flower paper, metal protective paint, tipping paper, aluminum foil, insulation paint, fiber treatment agent,finished parts, printing ink, dyes and so on.

China is a big consumer of PVB resin, which accounts for about 25% of the world consumption. Wanwei group as the largest PVA manufacturers, with an annual output of 250000 tons of PVA has the comparative advantage of brand, scale, technology, varieties and environmental protection ,the formation of market dominance. In order to further extend the industrial chain,expand industry surface, exert core competitive power of company,wanwei group in 2011 and 2013 invested respectively production with an annual output of 2000 tons of adhesive grade PVB resin production line and an annual output of 20000 tons film grade resin production line.

With strong support by reliable quality of PVA raw materials produced by our group company and technology professionals, since the PVB on the market , the response is good, strong growth in demand and market share increases steadily. It has very broad prospects for development.

Film Grade PVB Resin

Polyvinyl Butyral(PVB)is a kind of polymers, under condensation reaction and using Hydrochloric Acid as Catalyst, made from Polyvinyl Alcohol and Butyral Aldehyde. The chemical name is Polyvinyl Butyral Resin, abbreviations as PVB Resin. PVB resin is with high transparency, good light resistance, good cold resistance, water resistance, film forming properties and impact resistance etc. The laminated safety glass is widely used in automobiles, high-rise building, bank counter and all types of bullet proof glass. While with safety properties, PVB film interlayer are also with excellent acoustics, light control, warm keeping ,thermal insulation, and shockproof performance, which is the ideal composite materials for laminated safety glass.

project Technical indicators
Exterior White uniform powder
Volatile powder ≤2.5%
Hydroxyl content 17%-21%
Melt Index 0.5-3.0g/10min
Viscosity 180-320mpa.s
Haze ≤0.6%
Transmittance ≥88
Bulk density 0.12-0.25g/ml

Note: The above indicators can be customized according to customer requirements.