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Polyvinyl Formal (PVF)
Innovative Insoform® and Insothane® Products for Wire Coatings.
Overview
Insoform®, chemically known as polyvinyl formal (PVF), is a key material used in the production of magnet wire or wire enamel coatings. When combined with phenolic or other resins, Insoform® creates enamel coatings that offer exceptional adhesion, thermal stability, and mechanical strength. These coatings are essential for providing electrical insulation, preventing shorting in transformer coils, and supporting coil life expectancies of up to 40 years, even in high-temperature environments.
In addition to primary coatings, Insoform® is utilized for secondary coatings, offering excellent moisture resistance, as well as in applications such as binders for magnetic tapes, surface coatings for improved durability, and adhesives for structural applications.
Insothane®, a blocked poly-isocyanate product line, is used as an additive to create solderable wire enamels. Insothane CT polyurethane enamel-coated wires exhibit remarkable thermal and mechanical properties. Its compatibility with a wide range of resins—including alkyds, polyesters, polyethers, and polyacetals—makes Insothane® a versatile choice for producing varnishes with excellent mechanical, electrical, and hermetic properties.
Overview
Insoform®, chemically known as polyvinyl formal (PVF), is a key material used in the production of magnet wire or wire enamel coatings. When combined with phenolic or other resins, Insoform® creates enamel coatings that offer exceptional adhesion, thermal stability, and mechanical strength. These coatings are essential for providing electrical insulation, preventing shorting in transformer coils, and supporting coil life expectancies of up to 40 years, even in high-temperature environments.
In addition to primary coatings, Insoform® is utilized for secondary coatings, offering excellent moisture resistance, as well as in applications such as binders for magnetic tapes, surface coatings for improved durability, and adhesives for structural applications.
Insothane®, a blocked poly-isocyanate product line, is used as an additive to create solderable wire enamels. Insothane CT polyurethane enamel-coated wires exhibit remarkable thermal and mechanical properties. Its compatibility with a wide range of resins—including alkyds, polyesters, polyethers, and polyacetals—makes Insothane® a versatile choice for producing varnishes with excellent mechanical, electrical, and hermetic properties.
Application
Our Insoform® and Insothane® product lines offer superior performance across a range of wire coating and insulation applications.
Insoform®
- Primary enamel coatings for magnet wire
- Secondary coatings and moisture-resistant insulation
- Magnetic tape binders and structural adhesives
Insothane®
- Solderable wire enamels
- Varnishes with polyesters, alkyds, and polyethers
These advanced coatings ensure the reliability and longevity of electrical systems and components, making them indispensable in applications such as transformers and magnetic tapes.
Global Reach
Our Insoform® and Insothane® product lines are trusted by manufacturers around the world for their exceptional performance and reliability in critical electrical and structural applications. Whether providing insulation for magnet wire or creating durable coatings for high-performance electrical components, our products support a wide range of industries globally. Our solutions meet the highest quality standards and ensure lasting performance across diverse operating environments.
