Polyvinyl formal is used primarily as an electrical insulating varnish in the electronics industry, offering excellent dielectric properties and resistance to electrical current. It is ideal for coating magnet wires and electronic components to prevent short circuits and ensure reliable performance. Additionally, it finds application in the textile industry to improve fiber strength and abrasion resistance. It also serves as a binder in adhesives and coatings, providing strong adhesion to diverse surfaces and contributing to durability.