What Pucaro Elektro-Isolierstoffe does

PUCARO Elektro-Isolierstoffe GmbH is a German manufacturer of electrical insulation materials and systems headquartered in Roigheim, Baden-Württemberg, operating as a wholly-owned subsidiary of Hitachi Energy (formerly ABB's power-grids business). Founded in 1854 and tracing its papermill roots to 1667, the company has been part of the ABB/Hitachi Energy group since 1989 and now operates under the Hitachi Energy management system, Code of Conduct and certification umbrella.

The company's core technology is cellulose-based presspaper and pressboard, combined into engineered products: flexible multi-layer laminates (Triflexil®, Ecoflexil®) for insulation classes 130°C–200°C, rigid duroplastic laminates, machined composite components (CNC water-jet, milling, turning), and the proprietary HaPusystem high-voltage lead exit family spanning 400–1,200 kV for AC and DC transformer applications. Raw material is sourced exclusively from slow-growing Scandinavian coniferous trees to guarantee high-grade cellulose, processed without additional binding agents. PUCARO also delivers pre-assembled insulation KITs for oil-filled transformer winding benches on a just-in-time basis.

PUCARO generates revenue through direct B2B sales and an international network of kit centres, distributors and sales representatives, serving transformer manufacturers (power, distribution, dry-type, traction) and electric motor/generator producers globally. Pricing is quote-based on engineered specifications under multi-year contracts; no public pricing or revenue is disclosed. Distribution is supported by trade-show presence (Coiltech, CWIEME), an extensive technical-datasheet library, and memberships in ZVEI, VDE and VDP industry associations. Certifications include IATF 16949, ISO 9001/14001/45001/50001/37001, ISO/IEC 27001, UL listings and DuPont Nomex® Qualified Laminator status (since 2003).

Name

Pucaro Elektro-Isolierstoffe

Legal name

PUCARO ELEKTRO-ISOLIERSTOFFE GMBH

Website

https://pucaro.com

Company type

Private

Founded year

1854

Operating status

Operating

Headcount range

251–500 employees

Short description

Pucaro Elektro-Isolierstoffe is a German manufacturer of cellulose-based electrical insulation materials, laminates and lead exit systems (Triflexil®, Ecoflexil®, HaPusystem 400–1,200 kV) serving global transformer and electric motor OEMs as a wholly-owned Hitachi Energy subsidiary.

Ownership category

akta.pro rank

Headquarters

HQ city

Roigheim

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Electrical Insulation Materials and Systems: Manufacture and sale of electrical insulation materials and systems including presspaper, pressboard, flexible laminates (Triflexil®, Ecoflexil®), duroplastic laminates, machined composite components, lead exit systems (HaPusystem up to 1,200 kV), insulation KIT systems, and custom components. Revenue is generated through direct sales and channel partners to transformer manufacturers and electric motor/generator producers globally.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

Pucaro Elektro-Isolierstoffe manufactures electrical insulation materials and laminates for transformers, electric motors and generators. The product portfolio covers presspaper and pressboard made from pure cellulose, flexible multi-layer laminates (Triflexil®, Ecoflexil®), duroplastic rigid laminates, machined composite components, pre-assembled insulation KITs, and proprietary AC high-voltage lead exit systems (HaPusystem, 400–1,200 kV). Output serves transformer OEMs and motor/generator manufacturers with insulation classes from 105°C to 200°C.

Product overview

PUCARO Elektro-Isolierstoffe is a manufacturer of electrical insulation materials and laminates for transformers, electric motors, and generators. The product portfolio is organized around several core product lines: (1) Flexible Laminates comprising Triflexil® and Ecoflexil® brands offering multi-layer insulation materials in insulation classes from 130°C to 200°C for motors/generators and dry-type transformers; (2) Press Paper and Pressboard products including rolled and sheet pressboard in various grades (Edelpressspan, Transformer Presspaper, Hot-pressed, Laminated, and Calendered variants) for oil-filled transformers; (3) Components including spacers, angle rings, cylinders, duct spacing, static rings/cylinders, and other machined parts; (4) Insulation KITs bundling pre-assembled component sets for transformer winding; (5) HaPusystem Lead Exit Systems covering 400-1,200 kV AC/DC solutions; (6) Rigid Laminates and Machined Composite Components for high-performance applications. The company also offers custom coating, laminating, and converting services (contract work) with widths from 600-2,000 mm and bond thicknesses from 0.07-1.00 mm.

Differentiator

Problem solved

Functional benefit

Brands

• Triflexil®: Flexible insulation laminates for electrical machines and transformers, available in various thermal classes from 130°C to 200°C
• Ecoflexil®
• HaPuflex®
• HaPuSystem

Products and services

• Triflexil® Flexible Laminates Multi-layer flexible insulation laminates combining pressboard, polyester and polyamide films, polyester non-woven materials, and aramid papers (Nomex®). Used for layer insulation, slot insulation, and slot closure in electric motors and generators. Available in insulation classes B (130°C), F (155°C), H (180°C) and C/N (200°C).
• Ecoflexil® Flexible Laminates Flexible insulation laminates positioned as an environmentally focused alternative line, used for insulation in electric motors and generators across various thermal class options.
• Press Paper in Rolls Specialty cellulose-based insulation paper produced from slow-growing Scandinavian coniferous trees, formed into non-woven material and pressed. Classified as insulation class A (105°C) per IEC standard. Used in electrical machines, capacitors, and oil-filled transformers.
• Pressboard (Sheets, Hot-Pressed, Laminated, Calendered) High-purity cellulose-based insulation board manufactured from long-fibered coniferous trees without additional binding agents. Includes hot-pressed (IEC 641-1 Type B 3.1), precompressed laminated, and calendered variants (PUCARO Elboard LD, N, ZF). Insulation class A (105°C). Used for oil-filled power and distribution transformers.
• Machined Insulation Components (Formteile) Machined insulation components from pressboard including spacers, angle rings, cylinders, duct spacing, corner collars, L-profiles, frames, static rings, static cylinders, supporting cylinders, U-channels, corrugated board (Wellspan), wet parts, and couched high-voltage terminal leads. Used for electrical insulation, mechanical support, and cooling channel construction in oil-cooled power distribution transformers.
• Insulation KITs Pre-assembled insulation kits for oil-filled transformers that bundle multiple components (spacers, angle rings, cylinders, duct spacing) for winding manufacturing. Delivered as separately or pre-mounted insulation parts for winding benches and assembly, with just-in-time delivery service through dedicated kit centres.
• HaPusystem Lead Exit Systems Proprietary AC high-voltage lead exit system ranging from 400 to 1,200 kV, including HaPuflex 550, HaPuflex 800, and HaPuflex 1200 products. Manufactured as multi-layer insulation or barrier construction per customer specifications. Includes AC and DC lead exit systems.
• Rigid Laminates (Duroplastic Laminates) Technical composite laminates combining reinforcement, polymers, and additives. Offer corrosion/chemical resistance, high temperature resistance, fire retardance, and tracking/high PD resistance. Standard dimensions: thickness 2–130 mm, max sheet size 1,200 x 2,000 mm. Includes phenolic paper laminates, phenolic paper tubes, polyester laminates, and Nomex-based laminates.
• Machined Composite Components Precision-machined insulation components from rigid laminates using CNC water jet cutting, milling, and turning. Components include dotted tubes, pultruded profiles and rods, threaded rods, and stud bolts with tight tolerances. Manufactured just-in-time in varying quantities.

Quantifiable outcome

• Licence for 800 kV / UHGÜ transformers (2007)
• +1 more outcomes

Named customers1 record

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Four partnerships are on record, tiered minor and core.

• ZVEI (Zentralverband Elektrotechnik- und Elektronikindustrie e.V.)minorOthersPUCARO is a member of ZVEI, one of Germany's most important industrial associations, subdivided into 26 specialist associations representing the economic, technological and environmental-political interests of the German electronics industry at national, European and international levels.
• VDE (Verband der Elektrotechnik, Elektronik und Informationstechnik)minorOthersPUCARO is a member of VDE, an international experts platform for science, standardisation and product inspections. Core topics cover: 1. Science. Technologies. Innovations; 2. Norms. Standards. Fundamentals; 3. Testing. Safety. Consumer protection.
• VDP (Verband Deutscher Papierfabriken e.V.)minorOthersPUCARO is a member of VDP, the industrial top association of the German cellulose and paper industry, comprising 104 member companies producing paper, cardboard, paperboard, mechanical pulp and cellulose.
• Hitachi Energy Supplier NetworkcoreChannel Partner/ Reseller/ DistributorPUCARO supplies insulation materials and systems to Hitachi Energy as part of the global power grids supply chain. The purchasing page explicitly links to Hitachi Energy's 'Supplying' portal, indicating PUCARO is a preferred/approved supplier to Hitachi Energy's global transformer manufacturing operations.

Scale indicators3 records

Recent moves13 records

Expansion highlights5 records

Direct peers

• ELANTAS (Altana Group): ELANTAS, part of Altana, produces wire enamel, impregnating resins, and flexible electrical insulation materials for motors and transformers — comparable to PUCARO's electrical insulation portfolio for rotating machines and transformer applications.
• Isovolta AG: Isovolta is an Austrian manufacturer of electrical insulation laminates and composite materials used in transformers, motors, and generators — directly comparable to PUCARO's duroplastic and flexible laminate offerings.
• Weidmann Electrical Technology (Coats): Weidmann, now part of Coats Group, is the historically dominant global manufacturer of electrical insulation papers and pressboard for transformers — the most direct competitor to PUCARO in cellulose-based transformer insulation.
• Von Roll Holding AG: Von Roll manufactures electrical insulation materials (resins, laminates, mica-based products) for transformers, motors, and generators — overlapping PUCARO's duroplastic laminates and motor insulation product lines.
• Krempel GmbH: Krempel is a German manufacturer of electrical insulation materials including flexible laminates (DMD/NMN/NKN equivalent), pressboard, and conductive composites — directly competing with PUCARO's Triflexil® and Ecoflexil® offerings.

Emerging players

• Ahlstrom: Ahlstrom produces specialty pulp and electrical insulation papers (post Ahlstrom-Munksjö restructuring), competing in the cellulose-based presspaper segment that underpins PUCARO's transformer insulation products.
• Tesa SE (Beiersdorf): Tesa manufactures electrical insulation tapes and adhesive solutions used in transformer and motor manufacturing, addressing overlapping end-customers with complementary (rather than identical) insulation formats.

Broad incumbents

• Hitachi Energy: PUCARO's parent company Hitachi Energy is one of the world's largest transformer OEMs and grid integrators; it both consumes PUCARO's insulation internally and competes in adjacent high-voltage equipment categories.
• 3M: 3M is a diversified industrial manufacturer with an electrical construction and insulation product portfolio (tapes, resins, insulation systems) serving overlapping transformer and motor OEM customers.
• DuPont de Nemours (Nomex®): DuPont supplies Nomex® aramid paper that PUCARO laminates into Triflexil® products; DuPont is also a broader incumbent in high-temperature insulation materials and qualified-laminator programmes serving the same transformer/motor OEMs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Pucaro Elektro-Isolierstoffe