What Steinerfilm does

Steinerfilm is a third-generation, family-owned precision manufacturer of high-performance metallized dielectric films, headquartered in Williamstown, Massachusetts, with European operations in Erndtebrück, Germany under its sister company Steiner GmbH & Co. KG. Founded in 1951 by Ernst Steiner in Schameder, Germany, the company produces six dielectric base film types — BOPP, PET, paper, PPS, PEN, and specialty substrates such as PTFE, Kapton, PEI, and PEEK — enhanced by a proprietary capability stack including profile metallization (constant-resistance, heavy-edge, soft-transition patterns), inner-series patterns, masking/segment metallization, acrylate and humidity-protection coatings, and precision wave-cut slitting. Its heritage of building and modifying its own vacuum web metallization equipment enables processing of films as thin as 1.2 microns and metal deposition between 5nm and 500nm, supporting operating temperatures above 200°C and capacitance densities up to 50µF per cm³.

The company's customers span capacitor manufacturers, lithium-ion battery producers (through the Soteria Battery Innovation Group consortium, with SVolt Energy validated production), medical device makers (defibrillators, medical lasers), US military and aerospace programs (electromagnetic railguns, EMALS, directed-energy weapons), automotive electronics suppliers, oil & gas down-hole electronics operators, and renewable energy / wind farm system integrators requiring DC Link capacitors. Steinerfilm operates as a custom B2B manufacturer: each order is application-specific with unique combinations of base film, metallization pattern, coating, and slit width, with pricing determined via quote-based negotiation through direct engineering engagement.

The business model is geographically bifurcated — Steinerfilm, Inc. serves North and South America, Steiner GmbH & Co. KG serves Europe, Asia, and Rest of World — and exclusively direct: there is no e-commerce, standardized tier pricing, or reseller channel. Certifications include ISO 9001 since 1995 (all factories by 2000) and ISO 50001 (German facility since 2021). The company employs 251–500 people across its two principal sites and is led operationally by CEO Anne Dollarton-Feltmate and family-owned by Chairman and Owner Marc Steiner.

Name

Steinerfilm

Legal name

Steinerfilm, Inc.

Website

https://steinerfilm.com

Company type

Private

Founded year

1951

Operating status

Operating

Headcount range

251–500 employees

Short description

Steinerfilm is a third-generation, family-owned manufacturer of high-performance metallized dielectric films (BOPP, PET, PPS, PEN, and specialty substrates) for capacitors, lithium-ion battery current collectors, and pulse-power applications across medical, defense, energy, and automotive markets.

Ownership category

akta.pro rank

Product category

Metallized Dielectric Films

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416), Plastics Packaging Materials and Unlaminated Film and Sheet Manufacturing (32611)

SIC

Unsupported Plastics Film & Sheet (3081), Miscellaneous Plastics Products (3080)

akta.pro primary industry

Capacitors (Ceramic/Film/Electrolytic/Tantalum/Supercapacitors) (HDAHANAB)

akta.pro secondary industries

Electrical & Electronics Film/Sheet Extrusion (Insulating Films, Display/Optical Films) (IMANACAE), Industrial & Protective Film Extrusion (Masking, Surface Protection, Barrier Films) (IMANACAD)

Keywords

• Metallized dielectric films
• Film capacitors
• Precision metallization
• Polymer film coatings
• Battery current collectors

Headquarters

HQ city

Williamstown

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Metallized Dielectric Film Products: Steinerfilm manufactures and sells high-performance metallized dielectric films (BOPP, PET, PEN, PPS, PTFE, Kapton, PEI, PEEK, paper) to capacitor manufacturers and electronics companies. Sales are direct B2B, with products configured to customer specifications including metallization patterns, slit widths, and coating configurations. This is the primary revenue stream.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Steinerfilm manufactures high-performance metallized dielectric films (BOPP, PET, PPS, PEN, paper, PTFE, Kapton, PEI, PEEK) used as the core component in film capacitors and as battery current collectors. Products are configured to customer specifications with proprietary metallization patterns (profile metallization, inner series, masking/segments), acrylate and humidity coatings, and precision wave-cut slitting, sold directly to capacitor manufacturers, lithium-ion battery producers, and electronics companies in medical, defense, energy, automotive, and industrial markets.

Product overview

Steinerfilm is a precision manufacturer of high-performance metallized dielectric films for demanding applications. The product portfolio consists of six dielectric film types (Steinerfilm-P/BOPP, Steinerfilm-T/PET, Steinerfilm-K/Paper, Steinerfilm-I/PPS, Steinerfilm-E/PEN, and Steinerfilm-S/Special films) combined with advanced metallization capabilities including Profile Metallization, Inner Series Patterns, Masking/Segment Metallization, specialized Acrylate and Humidity-Protection Coatings, Precision Slitting with Wave-Cut technology, and Prototype/Custom Manufacturing services. These films serve critical applications in high-temperature environments (200°C+), pulse power (defibrillators, lasers, military systems), battery current collectors, energy/power electronics, flexible electronics/RFID, and specialty applications.

Differentiator

Problem solved

Functional benefit

Products and services

• Steinerfilm-P (BOPP)

Quantifiable outcome

• Film thickness as thin as 1.2 µm (BOPP, PPS) — enabling 5 µF per cm³ capacitance density
• +4 more outcomes

Named customers9 records

Segments7 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Soteria Battery Innovation GroupcoreStrategic or Co-development PartnerSteinerfilm is an active member of the Soteria Battery Innovation Group consortium. The consortium develops and validates metallized plastic film current collectors (produced by Steinerfilm) as a safer alternative to conventional metal-foil current collectors in lithium-ion batteries. The film, metallized on both sides with 500nm of metal, prevents thermal runaway by vaporizing and isolating internal short circuits. SVolt Energy (a consortium member) has validated the concept in actual products. The partnership is central to Steinerfilm's 2022 entry into the battery industry.
• Soteria Battery Innovation GroupcoreStrategic or Co-development PartnerSteinerfilm is an active member of the Soteria Battery Innovation Group consortium, which is developing safer lithium-ion battery technology using Steinerfilm's aluminum metallized film current collector. This is explicitly listed as a key partnership under 'Partners and Associations' on the About Us page.
• SVolt EnergyminorStrategic or Co-development PartnerSVolt Energy built NMC 811 cells demonstrating the enhanced safety of the Soteria aluminum metallized film current collector produced by Steinerfilm against control cells with standard aluminum foils. SVolt is a customer of the Soteria consortium and a validating partner for Steinerfilm's battery film technology.
• XprominorOthersListed as a partner under 'Partners and Associations' on the Steinerfilm About Us page. Xpro appears alongside other partner logos on the contact page.

Scale indicators4 records

Recent moves13 records

Expansion highlights4 records

Broad incumbents

• Toray Industries: Toray is one of the world's largest producers of capacitor-grade BOPP and PET films, serving the same metallized film capacitor value chain as Steinerfilm. As a global incumbent, it competes on scale and breadth, whereas Steinerfilm competes on specialty profile patterns, ultra-thin substrates, and custom engineering for demanding applications.
• Mitsubishi Chemical Group (Mitsubishi Polyester Film): Mitsubishi Chemical produces high-grade polyester films used in metallized film capacitors, overlapping directly with Steinerfilm's PET and PEN product lines. It is a broad incumbent with larger scale, while Steinerfilm differentiates on profile metallization and acrylate/humidity-protection coatings.
• Bolloré (Blue Solutions Films division): Bolloré's film division historically produced capacitor-grade films (Bolloré Films / Fleximedia) for metallized film capacitors, comparable to Steinerfilm in product type and customer base. As a broader industrial conglomerate, it has wider portfolio exposure.
• TDK Electronics (EPCOS film capacitors): TDK (via EPCOS) is a major manufacturer of film capacitors for automotive, industrial, and energy applications, and is a significant buyer of metallized dielectric films including types made by Steinerfilm. It is comparable as a customer-side incumbent shaping film specifications and volumes.
• Vishay Intertechnology: Vishay manufactures film capacitors (including metallized film types) for industrial, automotive, and military applications, making it both a potential customer for Steinerfilm-style films and a comparable component supplier. It competes in the same end-markets — defense, medical, renewable energy, and automotive electronics.

Direct peers

• Krempel Group (formerly Kopafilm): Krempel manufactures metallized films and laminates for capacitors and power electronics, making it a direct peer to Steinerfilm in the high-performance metallized dielectric film segment. Both serve European and global capacitor manufacturers with custom-engineered film solutions.
• Tervakoski Film Group: Tervakoski Film produces oriented polypropylene and other technical films used in film capacitors, directly overlapping with Steinerfilm's BOPP-based offerings. It competes in the same dielectric film supply chain for capacitor manufacturers.
• Film capacitors (Sicht-Pack Hagner / Albert Hagner): Albert Hagner / Sicht-Pack Hagner produces metallized films and converted film products for capacitors and packaging, overlapping with Steinerfilm in metallized dielectric films. It is a regional German peer serving similar European capacitor customers.

Others

• Maxwell Technologies (a Tesla company): Maxwell Technologies develops ultracapacitors and battery-related components, intersecting with Steinerfilm's pulse power and emerging battery current collector applications. Comparable in the sense that both serve energy storage customers and rely on advanced film and electrode technology, though Maxwell is a downstream component maker rather than a film supplier.

Emerging players

• Soteria Battery Innovation Group consortium: Soteria is a consortium developing metallized plastic current collectors for safer lithium-ion batteries, of which Steinerfilm is a member and primary film producer. Comparable as an emerging standards-and-supply ecosystem shaping the next-generation battery film opportunity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/steinerfilm

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Steinerfilm