Weidmann Holding

What Weidmann Holding does

Weidmann Holding AG is a Swiss, family-owned industrial manufacturer headquartered in Rapperswil, Switzerland, founded in 1877 and still controlled by the Tschudi family after more than a century. The company operates three business areas from eighteen facilities in ten countries, employing roughly 3,663 people and generating CHF 573 million in net sales in 2025 across customers in more than 80 countries.

Weidmann Electrical Technology is the dominant business, contributing CHF 504 million (88 percent) of 2025 net sales. It produces Transformerboard, the hot press-dried cellulose insulation board invented at the company in 1937 that remains the global standard for high-voltage power transformer insulation, alongside Maplex board and paper products, specialty crepe and diamond-dotted papers, and ultra-high voltage insulation components manufactured in China, Mexico, Brazil, the USA, the UK, Croatia, Türkiye, and Ukraine. Weidmann Medical Technology (CHF 69 million, 12 percent of 2025 sales) supplies high-precision injection-molded plastic components, including nano-structured lab-on-a-chip surfaces, to medical device and pharmaceutical customers from cleanroom facilities in Switzerland, Mexico, Germany, and the USA under ISO 13485. Weidmann Fiber Technology, the newest business area launched in 2016, produces microfibrillated cellulose (MFC) at a dedicated Rapperswil plant and is commercializing the Celova line of biodegradable alternatives to microplastics for packaging and personal care.

Revenue is generated almost entirely through direct B2B sales of customized industrial components priced on a quote basis under multi-year contracts, with no public list pricing. The go-to-market combines an enterprise field sales force embedded near major transformer and medical OEMs, regional manufacturing for proximity-based supply, license partnerships (e.g., Govik Electricals in India), and participation in industry events (Cigre, Middle East Energy, ADLM). The company is privately held, family-financed, and currently executing a CHF 200 million investment program to expand Electrical Technology capacity in the Americas.

Name

Weidmann Holding

Legal name

Weidmann Holding AG

Website

https://weidmann-group.com

Company type

Private

Founded year

1877

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Weidmann Holding AG is a Swiss family-owned industrial manufacturer founded in 1877, producing transformer insulation materials, high-precision medical components, and cellulose-based sustainable materials through three business areas serving customers in more than 80 countries.

Ownership category

akta.pro rank

Product category

Industrial Electrical Insulation Materials

NAICS

Converted Paper Product Manufacturing (3222)

SIC

Paper Mills (2621), Plastic Material, Synth Resin/Rubber, Cellulos (No Glass) (2820)

akta.pro primary industry

Cellulose-Based Biodegradable Materials (cellulose films, fibers, derivatives) (IMAEAOAE)

akta.pro secondary industries

Nanocellulose & Cellulose Derivatives (CNC/CNF, MCC, ethers/esters) (IMAMALAD), Compostable & Bio-Based Packaging (PLA/PHA, Starch Blends, Cellulose Films) (IMALAMAB), Specialty Pulp (Microfibrillated/Nanocellulose, Filter/Technical Grades) (IMAMADAE)

Keywords

• Transformer insulation materials
• Electrical insulation components
• Medical injection molding
• Cellulose fiber technology
• Biodegradable materials manufacturing

Headquarters

HQ city

Rapperswil

HQ country

Switzerland

HQ region

Europe

Offices13 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 Technology Products: Sale of transformer insulation materials including Transformerboard, electrical papers, insulation components, and related products. This is the largest business area contributing CHF 504 million in 2025 (88% of net sales).
2. Medical Technology Components: Manufacturing and sale of high-precision injection-molded components for medical and pharmaceutical applications. Contributed CHF 69 million in 2025 (12% of net sales).
3. Fiber Technology Solutions: Sale of microfibrillated cellulose (MFC) and sustainable fiber-based products including Celova biodegradable materials. Part of the Fiber Technology division under Electrical segment.
4. Engineering and Technical Services: Technical services related to transformer diagnostics, oil analysis, and monitoring services (though InsuLogix monitoring product line was sold to Megger in 2023).

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels5 records

Core offering

Weidmann manufactures and sells engineered cellulose-based products across three business areas: transformer insulation materials (Transformerboard, electrical papers, and insulation components for high-voltage power transformers); high-precision injection-molded plastic components for medical and pharmaceutical devices; and cellulose-based sustainable materials such as microfibrillated cellulose (MFC) and Celova biodegradable alternatives to microplastics. Customers are primarily industrial enterprises including transformer manufacturers, medical device companies, and consumer/packaging firms in more than 80 countries.

Product overview

Weidmann Holding operates three distinct business areas: Electrical Technology (transformer insulation solutions including Transformerboard, insulation components, Maplex Board/Paper), Medical Technology (high-precision injection-molded medical components), and Fiber Technology (cellulose-based solutions including microfibrillated cellulose and Celova biodegradable materials). The company is a family-owned enterprise founded in 1877, serving customers in over 80 countries with products shipped annually exceeding 5 million units.

Differentiator

Problem solved

Functional benefit

Brands

• Transformerboard: Hot press-dried insulation board for high-voltage power transformers, invented by Weidmann in 1937 and still the global standard
• Maplex Board
• Maplex Paper
• Celova
• InsuLogix

Products and services

• Transformerboard Hot press-dried cellulose-based insulation board used as the global standard for insulating high-voltage power transformers; produced in large-format machines and supplied to transformer manufacturers worldwide.
• Insulation Components

Quantifiable outcome

• Trusted partner to customers in more than 80 countries around the world
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Govik Electricals Pvt. Ltd.regionalTechnology or Integration · 1 January 1999License partnership established in 1999 with Govik Electricals in Mumbai, India, to support local fabrication of insulation components and strengthen market access in the region.

Scale indicators9 records

Recent moves28 records

Expansion highlights6 records

Broad incumbents

• Hitachi Energy: Global leader in power transformers and grid technologies. As a major transformer OEM, it is both a customer and adjacent supplier of insulation solutions, providing direct market context for Weidmann's insulation materials in utility and industrial applications.
• ABB: Swiss-headquartered global leader in electrification and motion, including major power transformer manufacturing. Represents a key transformer OEM customer relationship for Weidmann while also being a benchmark for grid-side demand growth.
• Mitsubishi Electric Corporation: Japanese manufacturer of power transformers, transmission systems, and related electrical equipment. Major transformer OEM that purchases insulation materials comparable to Weidmann's Electrical Technology offerings, especially in Asia-Pacific markets.
• Gerresheimer AG: German manufacturer of high-precision glass and plastic products for the pharmaceutical and medical device industries. Closely comparable to Weidmann Medical Technology's high-precision injection-molded components business in target customer base and regulatory requirements.
• Stora Enso Oyj: Finnish-Swedish forest products company producing specialty pulp, biocomposites, and renewable packaging solutions. Comparable in cellulose/biomaterials capability and Fiber Technology / Celova market overlap as Weidmann expands sustainable materials.
• 3M Company: US diversified industrial conglomerate with historical electrical insulation materials products serving transformer and electronics applications. Provides competitive context as a much larger diversified peer with overlapping electrical insulation capabilities.

Direct peers

• Von Roll Holding AG: Swiss-based competitor in transformer insulation systems, producing insulation materials, mica products, and casting resins for the transformer industry. Directly competes with Weidmann's Electrical Technology Business Area for transformer OEM customers globally.
• West Pharmaceutical Services: US-headquartered global manufacturer of high-precision components and delivery systems for pharmaceutical and medical device applications. Closely comparable in medical technology customer base, regulatory positioning (ISO 13485), and precision manufacturing capabilities.
• Borregaard ASA: Norwegian specialty biorefining company producing microfibrillated cellulose (MFC) and lignin-based biopolymers. Direct peer in Weidmann Fiber Technology's MFC business and a benchmark for commercializing cellulose-based specialty materials.
• Krempel GmbH: German manufacturer of electrical insulation materials including Transformerboard equivalent products, crepe papers, and laminated insulation boards. Direct competitor to Weidmann's core Transformerboard and Maplex Board product lines for transformer OEMs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/weidmann-group

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries10 records

Funding overview

Funding rounds1 record

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 Weidmann Holding