What Isovolta does

Isovolta AG is an Austrian private manufacturer of electrical insulation materials, technical laminates, and composite materials, headquartered in Wiener Neudorf and operating 15 production and sales locations across Europe, the Americas, and Asia with approximately 1,270 employees. The company organizes its offering around three primary pillars: Energy (high-voltage and low/medium-voltage insulation systems for generators, motors, transformers, and drives, plus e-mobility battery packaging and the AEV Group's electrical insulating resins and varnishes), Composite Materials (carbon- and glass-fiber laminates, ceramic matrix composites, duroplastics, high-performance thermoplastics, and machined parts), and Aviation & Transportation (FST-validated prepregs, phenolic laminates, and decorative laminates for aircraft and rail interiors). Its technology base spans proprietary mica-based insulation systems, vitrimer-based epoxy prepregs co-developed with PCCL for recyclable composites, and the ITAR-free CERAPREG ceramic matrix composite platform rated to 900°C. The group serves roughly 20 industries including aviation, automotive, energy, e-mobility, electronics, and mechanical engineering, with branded product families (CERAPREG, AIRPREG, AIRVOLT, Thermiga, Isonom, Airdec, Raildec, Calmica, Voltaflex) backed by multi-site certifications (ISO 9001, IATF 16949, EN 9100, AS9100D, TISAX L2). The company is led by Chairman of the Executive Board Peter Höllwarth, and is wholly owned under Austrian private control with no public listing or external venture capital disclosed.

Isovolta monetizes almost exclusively through direct hardware sales of engineered insulation and composite materials to enterprise customers, with pricing handled through dedicated sales contacts rather than public disclosure. Distribution runs through wholly-owned regional sales offices that combine local technical support, qualification assistance, and in some cases fabrication services (e.g., stamping, machining, waterjet cutting). Customer acquisition is event-driven (CAMX, Coiltech Italia, Vietnam ETE & Greenergy Expo) and reinforced by a multi-language corporate website that funnels inquiries into product-category-specific contact forms. The Harrisburg, Oregon facility supplies decorative laminates to approximately 150 airlines worldwide, and the Aviation & Transportation division at Wiener Neudorf serves aircraft designers, OEMs, and airlines directly.

Revenue is not publicly disclosed. The group is a top-five global mica tape producer (the mica tape market is projected to grow from US$556M in 2025 to US$634M by 2032, with the top five holding ~54% of revenue), and the 1,270-employee, 15-site footprint is consistent with a mid-cap specialty industrial materials manufacturer generating an estimated US$250M-$500M annually. Recent strategic emphasis has been on commercializing the vitrimer-based recyclable prepreg platform (recognized with the Styrian Innovation Prize 2026 and presented at JEC World 2026) and on scaling the e-mobility and ceramic matrix composite product lines (Thermiga, CERAPREG) to capture demand from EV battery manufacturers, 800V e-motor platforms, and high-temperature aerospace applications.

Name

Isovolta

Legal name

ISOVOLTA AG

Website

https://isovolta.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Isovolta AG is a privately held Austrian manufacturer of electrical insulation materials, technical laminates, and composite materials, operating 15 production and sales sites across three continents and serving approximately 20 industries including aviation, energy, e-mobility, and electronics.

Ownership category

akta.pro rank

Product category

Electrical Insulation Materials

NAICS

Electrical Equipment Manufacturing (3353), Other Electrical Equipment and Component Manufacturing (3359), Battery Manufacturing (33591)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Electrical Industrial Apparatus (3620), Electronic Components & Accessories (3670)

akta.pro primary industry

Automotive Power Electronics & Inverters/Converters Manufacturing (IMACAJAE)

akta.pro secondary industries

Automotive Batteries & 12V/Low-Voltage Energy Storage Manufacturing (IMACAJAJ), Automotive Charging Hardware Manufacturing (On-board Chargers, Charge Inlets, DC-DC) (IMACAJAK)

Keywords

• Electrical insulation materials
• Technical laminates
• Composite materials
• Prepreg manufacturing
• Ceramic matrix composites

Headquarters

HQ city

Wiener Neudorf

HQ country

Austria

HQ region

Europe

Offices17 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales

Revenue model

1. Electrical Insulation Materials: Sale of mica tapes, flexible laminates, coated materials, and insulation systems for high voltage (generators, motors, wind power), low voltage, and transformer applications. Products are sold as finished materials or semi-finished goods (prepregs) for industrial customers.
2. Composite Materials: Sale of composite materials including CERAPREG ceramic matrix composites, CFK laminates, GFK rings, glass thermosetting laminates, hard paper, and engineering plastics (PEEK, POM, PVDF, PA6 30GF). Includes machined composite parts and custom solutions.
3. Aviation & Transportation Products: Decorative and structural composite products for aircraft interiors (AIRPREG prepregs, AIRVOLT laminates, Airdec/Raildec series), as well as products for rail and ship interiors. Sold directly to aircraft manufacturers, airlines, and interior designers.
4. Electrical Insulating Resins, Varnishes, and Compounds (AEV Group): AEV Group, a member of the ISOVOLTA Group, is an international leading manufacturer of electrical insulating resins, varnishes and compounds used worldwide in the production of electrical and electronic components.

Go-to-market motion3 records

Distribution channels2 records

Marketing channels4 records

Core offering

Isovolta AG manufactures electrical insulation materials (mica tapes, flexible laminates, coated materials, VPI and Resin Rich systems), technical laminates, and composite materials (CFK/GFK laminates, high-performance thermoplastics, ceramic composites). Its products serve high-voltage rotating machines, low-voltage and transformer applications, e-mobility battery systems, and aviation interiors with FST-compliant prepregs and decorative laminates. The company also produces electrical insulating resins, varnishes, and compounds through its AEV Group subsidiary.

Product overview

Isovolta AG is an Austrian international manufacturer of electrical insulation materials, technical laminates, and composite materials. The company operates across three main product categories: Energy (High Voltage, Low Voltage & Transformer, E-Mobility, Liquids), Composite Materials (CFK-Laminate, GFK-Ringe, Glashartgewebe/-matte, Hartgewebe, Hartpapier, Kunstharzpressholz, Sonderlaminate, Hochleistungskunststoffe, CERAPREG ceramic composites), and Aviation & Transportation (AIRPREG prepregs, AIRVOLT laminates, Airdec/Raildec decorative laminates, composites, and engineering services). The portfolio includes branded products like CERAPREG for high-temperature ceramic matrix composites, Thermiga for lithium-ion battery protection, Isonom for e-mobility insulation, and various branded insulation materials and laminates. Products serve approximately 20 industries including electronics, aviation, automotive, energy, and machinery. The company has 15 global locations and approximately 1,270 employees.

Differentiator

Problem solved

Functional benefit

Brands

• CERAPREG: Silicate-ceramic composite material for high-temperature applications in aerospace, space, and e-mobility. Withstands 900°C mechanical load, temperature-resistant, quasi-ductile, up to 40% weight reduction compared to non-ceramic solutions.
• Calmica
• Thermiga
• Isonom
• AIRPREG
• AIRVOLT
• Airdec
• Raildec
• AEV Group
• Haysite

Products and services

• CERAPREG A high-performance silicate-ceramic mixture composite material that withstands mechanical loads up to 900°C, is temperature-change resistant, and quasi-ductile. Provides up to 40% weight reduction compared to non-ceramic solutions, available as roll goods (prepreg) or custom fabrication. ITAR-free, drapable for 3D forming without property loss. Used in aerospace, space, and e-mobility applications.
• AIRPREG FST (Fire, Smoke, Toxicity) prepregs for aircraft cabin interiors with excellent surface quality and high mechanical strength. Also available for primary and secondary structural niche applications providing powerful mechanical properties, low weight, and high surface quality. Suitable for aircraft, railway, and ship cabin applications.
• AIRVOLT LAMINATES High Performance Composites based on a phenolic resin system with excellent fire properties for passenger cabin or cargo lining applications in aviation. Offers high mechanical resistance, minimal moisture absorption, and retention of mechanical properties even when in contact with water.
• Airdec F Series Very lightweight vacuum-formable decorative laminates meeting stringent flammability, smoke, and toxic gas emission requirements for passenger aircraft cabins. Available in continuous roll or sheet format with variants F1, F2, and RF for refurbishment.
• Airdec FL Series Aircraft flooring laminates including Airdec FL Flexibles for flat and contoured surfaces, Airdec FL Formable for lavatory floor pans, and Airdec FL Rigid for flat surfaces.
• Airdec G Series Glass fibre reinforced thermoplastic decorative laminates designed for mechanically stressed areas meeting heat release, smoke emission, and toxicity requirements. Variants include GE for high-stress areas, GL for defect hiding properties, and GS for maximum wear resistance.
• Airdec SF Series Decorated thermoplastic sheet laminates that can be thermoformed into various aircraft interior parts. LHR variants meet FAA heat release and smoke emission requirements. LHR+ variant also meets Airbus 95% toxic gas emission requirements.
• Airdec Shade Series Window shade decorative laminates for aircraft including Airdec 1E for window shade application, Airdec RS lightweight fiberglass reinforced roller shade laminate, and Airdec WS thermoplastic window shade decorated on both sides meeting FAA heat release and smoke requirements.
• Raildec Series Decorative laminates for rail vehicle interiors meeting stringent flammability and smoke and toxic gas emission requirements. Raildec TE is vacuum-formable and available in continuous roll or sheet format. Raildec TG is integrally colored glass fibre reinforced, dimensionally stable, and extremely durable.
• Thermiga Lithium-ion battery packaging materials combining mica paper with organic and/or inorganic films and V0 foams. Provides thermal insulation, UL94 V0 fire protection, electrical insulation, compressibility, technical cleanliness, and ballistic resistance for thermal runaway protection in EV battery systems.
• Isonom (E-Mobility Portfolio) E-Mobility portfolio for slot and phase insulation in electric motors based on Nomex aramid paper for thermal, mechanical, and chemical protection, and high-temperature resistant polyimide films like Kapton offering exceptional dielectric strength. Supports 800V system platforms with high partial discharge resistance and CTI values.
• Voltaflex DM (2-layer) and DMD (3-layer) composites made from PET film and PET fleece. Used for slot, layer, and phase insulation in electric motors, generators, and transformers.
• Isonom (Laminate) NM and NMN composites made from Nomex and PET films. Insulation class 155°C - 180°C. For slot, layer, and phase insulation in electric motors, generators, and transformers.
• Calmica Thermosetting insulation systems of insulation class 155°C for producing main insulations based on resin-rich mica paper with high-temperature resistant epoxy resin on film carriers. Includes Calmica, Calmicafab, and Calmicaglas products.
• Poroband / Porofab / Porofol Porous fine mica tapes with low resin content and glass fabric carriers (Poroband), ultrathin glass carrier technology (Porofab), and porous fine mica tapes with film carriers (Porofol) for main insulation in high voltage machines.
• Votastat Low-viscosity impregnating resins for vacuum pressure impregnation (VPI) of coils and bars as well as full impregnation of high voltage machines.
• CFK-Laminate Carbon fiber reinforced laminates originally developed for aerospace, now used in medical technology and machinery. Offers high stiffness and strength at low density, with high corrosion and vibration resistance and low thermal expansion.
• GFK-Ringe GFRP high-performance rings made from epoxy or polyester resins with glass roving, glass mats, and glass fabrics. Used for insulation rings, stiffening rings, pressure rings, and support rings in transportation technology, generator construction, and high-performance machinery.
• Glashartgewebe / Glashartmatte Laminates based on glass fiber fabric or glass filament mat from alkali-free E-glass with high-quality epoxy, polyester, melamine, silicone, and phenolic resins. Offers excellent mechanical values up to 200°C, high creep resistance, chemical resistance, and ecological neutrality.
• VOLTIS Hgw Series Phenol-cotton canvas laminates (VOLTIS Hgw 2082, 2082.5 CE, 2083) for mechanical engineering applications including gears, plain bearings, and sliding elements. Types PF CC 201/202/203 per IEC 60893.
• AEV Group (Electrical Insulating Resins) International leading manufacturer of electrical insulating resins, varnishes, and compounds used worldwide in the production of electrical and electronic components. Part of ISOVOLTA Group with operations in Europe and Asia.
• Kapton and Nomex Distribution Authorized DuPont distribution partner for Kapton polyimide film (Europe and Mexico) and Nomex aramid paper (Africa, Andean states, China, Europe, Hong Kong, Middle East, North and Central America, Russia, Brazil). Offers high-temperature resistant films and aramid paper for slot and phase insulation in electric motors.
• Hartpapier (Hard Paper) Classic insulation material made from high-quality paper with thermosetting phenolic-formaldehyde resin binder. Used as electrical insulation for simple base plates to complex electronic components with IC-standard types, including special types for increased strength and self-extinguishing properties. Over 20,000 switchgear panels equipped with Inbord melamine-laminated hard paper since 1996.
• Kunstharzpressholz Resin-bonded compressed wood made from beech veneers bonded with curable synthetic resins under pressure and heat. Features low specific gravity, high mechanical load capacity, and abrasion and cold resistance. Used for power transformers, oil transformers, galvanizers, and mechanical applications in ballistics.
• Vitrimer-based Prepreg for Recyclable Composites Recyclable fiber-reinforced composite materials using vitrimer-based epoxy technology, developed in collaboration with PCCL. Combines the strength of thermosets with the recyclability of thermoplastics. Successfully scaled from laboratory to industrial production for the aviation industry.

Quantifiable outcome

• 40% weight reduction with CERAPREG compared to common non-ceramic solutions
• +4 more outcomes

Named customers3 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered flagship and core.

• Polymer Competence Center Leoben (PCCL)flagshipStrategic or Co-development Partner · 6 May 2026PCCL and Isovolta collaboration won the Styrian Innovation Prize 2026 in the sustainability R&D category for developing recyclable fiber-reinforced composite materials using vitrimer-based epoxy technology. The collaboration achieved the first economical production of these recyclable composites for the aviation industry, combining the strength of thermosets with the recyclability of thermoplastics. The technology was successfully scaled from laboratory to industrial production and is being advanced toward commercialization in multiple markets.
• AEV GroupcoreOthersAEV Group is a member of the ISOVOLTA Group and is an internationally leading manufacturer of electrical insulating resins, varnishes, and compounds used worldwide in the production of electrical and electronic components. The AEV Group operates as an integral part of Isovolta's product portfolio, particularly in the Energy division, with locations including AEV Asia in Malaysia, AEV Ltd. in UK, and the headquarters group.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Von Roll Holding AG: Swiss-based specialist manufacturer of electrical insulation materials (mica products, resins, composites) serving motors, generators, and transformers. Most direct comparable to Isovolta's Energy division and overall product mix.
• Elantas (Altana Group): Global leader in electrical insulating resins, varnishes, and potting compounds (part of ALTANA). Closely comparable to Isovolta's AEV Group resins portfolio and the wider energy/insulation product range.
• Hexcel Corporation: US-listed advanced composites manufacturer (carbon fiber prepregs) for aerospace, defense, and industrial markets. Comparable to Isovolta's AIRPREG, AIRVOLT, and vitrimer-based aviation composite offerings.
• Toray Advanced Composites: Manufacturer of thermoset and thermoplastic prepregs for aerospace, automotive, and industrial applications. Directly comparable to Isovolta's prepreg business for aviation and e-mobility.

Broad incumbents

• DuPont: Diversified specialty materials giant and Isovolta's supplier/distribution partner for Kapton polyimide films and Nomex aramid papers. Comparable as both a strategic supplier and a competing upstream producer of high-performance insulation substrates.
• 3M: Diversified industrial conglomerate with electrical materials, tapes, and adhesives divisions that overlap with Isovolta's flexible laminates, insulation tapes, and converter product lines.
• Solvay / Syensqo: Specialty chemicals group with a strong composites and advanced materials portfolio (including former Cytec aerospace composites). Comparable in aviation composites, specialty resins, and high-performance polymer chemistries overlapping with Isovolta's composite materials business.
• Hitachi Energy: Global leader in power grids, transformers, and high-voltage equipment. As a major buyer of electrical insulation materials, it shapes the demand environment in which Isovolta's mica tapes and high-voltage insulation systems compete.
• Tesa SE (Beiersdorf): Industrial tapes and adhesive systems manufacturer serving automotive, electronics, and industrial markets. Comparable to Isovolta's industrial tape and coated materials portfolio for low-voltage and consumer applications.

Emerging players

• TDK Corporation: Japanese electronics and electronic components group with growing exposure to EV power electronics, battery materials, and energy devices. Adjacent competitor in the EV insulation and power-electronics materials value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries16 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Isovolta