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The main gate of the factory in Münster
|Patrick Mathieu (CEO)|
|Products||Thermal, low-temperature and cryogenic industrial insulation materials|
|Revenue||399,000,000 EUR (2009)|
Number of employees
Armacell International Holding GmbH is a German manufacturer and supplier of industrial foams and flexible insulating materials, based in Münster. Armacell develops thermal, acoustic and mechanical insulation solutions. With 3,000 employees and 25 production plants in 17 countries, the company operates in two main businesses, Advanced Insulation and Engineered Foams. Armacell focuses on insulation materials for technical equipment, high-performance foams for high-tech and lightweight applications and next generation aerogel blanket technology.
Armacell has 20 distribution offices and factories across thirteen countries. These regional subsidiaries are separate legal entities, and Armacell Personal Services GmbH is also technically a subsidiary which provides personnel services.
Until a management buyout in June 2000 the company that would become Armacell was still was a division within Armstrong World Industries dedicated to producing insulators. This division's history dates back to 1899, when Thomas Armstrong, founder of Armstrong World Industries, started producing insulating corkboard and brick. In 1954 the division experienced considerable success after launching the first flexible technical insulator for pipe connections. This subsequently became a synonym for plastic foam insulation: Armaflex 
In 1959 Armaflex came across Europe. On the 23 May of the following year, Armstrong World Industries laid the foundation stone for Armstrong Kork GmbH, their first factory in Germany, originally purposed to exclusively produce floorings. But the ongoing expansion in Europe led to it opening its first distribution office and the foundation of Armstrong's European headquarters was laid in Düsseldorf. Due to increasing demand it was decided in 1967 to erect a new factory for Armaflex in Münster. Since then, this site has become the company's most productive factory. The 1973 oil crisis nourished further growth and led to new innovations in heating-system insulators. Growth was also propelled by West Germany's "Energieeinsparverordnung", a law obliging building owners to construct edifices in a way which ensures that the consumption of energy required for heating would remain as low as possible.
In the year 1984 the Swiss company Rohtrist and its brand Tubolit were taken-over. Thus insulations based on Polyethylene were added to the range of products. Five years later this brand became the first to eschew the usage of Chlorofluorocarbon.
Since 1991 the Münster site has been equipped as a center for advanced research  in regards to insulation solutions. In June 2000 the insulation producing division became an independent company, during which all rights concerning the brands Armaflex and Tubolit were transferred to the newly formed Armacell International Holding. The company began expanding into Asia the following year, where it acquired a Thai producer of technical insulations and founded a new division for technical foams. In 2004 Armacell acquired the brands Ensolite and Oletex and the associated facilities from the US-American RBX group. In 2005 Armacell took over an American producer of foam slab stock (Monarch Rubber) and a European producer of thermoplastic foams (Fagerdala Benelux S.A.). Additional takeovers were carried out in 2008 when Armacell purchased MDS Leuze (a manufacturer of blank-sheet cable coatings) and PropaCene (previously a division of cellular foams producer Cellect).
- Florian Langenscheidt, Bernd Venohr (Hrsg.): Lexikon der deutschen Weltmarktführer. Die Königsklasse deutscher Unternehmen in Wort und Bild. Deutsche Standards Editionen, Köln 2010, ISBN 978-3-86936-221-2.
- "Armacell is the market and technology leader in flexible technical insulation materials". Retrieved 2011-06-19.
- "To further optimize environmental performance, Armacell has now installed an innovative exhaust air combustion system at the company headquarters in Münster". Retrieved 2011-06-19.
- "Armacell commands a global market share of close to 50%, more than twice the size of its closest competitor". Retrieved 2011-06-19.
- "The company Armacell was founded in May 2000 as a management buy-out". Retrieved 2011-06-19.
- 50 Jahre Armaflex – 50 Jahre technische Innovation
- "We use Armaflex AC for thermal insulation of sanitary hot water and heating pipes, and for condensation protection of cold water pipes". Retrieved 2011-06-19.
- "It is common knowledge that considerable energy savings can be achieved through the optimal insulation of buildings". Retrieved 2011-06-19.
- "The company also provides polyethylene tube insulation for domestic plumbing and commercial hot water applications". Retrieved 2011-06-19.
- "Thanks to innovative technologies, Germany-based foam manufacturer Armacell is now able to manufacture foam cores from the recyclate of PET bottles". Retrieved 2011-06-19.
- "Tubolit SS polyethylene pipe insulation is recommended for use on lines operating from 0°F (-17°C) to 180°F (82°C)". Retrieved 2011-06-19.
- "Armacell LLC, global leader in engineered foams, proudly continues the Monarch tradition". Retrieved 2011-06-19.
- "As of December 31, 2008, MDS Manfred Leuze GmbH operates as a subsidiary of Armacell International GmbH". Retrieved 2011-06-19.
- "Armacell expansion continues: Armacell acquires the PropaCene business from US manufacturer Cellect". Retrieved 2011-06-19.