Our Philosophy

Due to decades of experience and presence on the foundry market, e-form is constantly familiar with new techniques. It is our task to constantly solve new problems and use innovations professionally and profitably.

Highest quality and precision must be maintained, as the products are exposed to continuous thermal and mechanical stress for up to 24 hours a day. Our market presence covers the entire foundry industry worldwide. From small simple flasks for handmoulding up to complex equipment assemblies, we offer our experience in the design and manufacture of welded and cast iron boxes, cooling cars and hardened guide parts.

We always strive to produce our products with the highest quality and accuracy in the time frame yout set. Our complete deliveries include, if necessary, the preparation of engineering drawings, procurement of all raw materials, mechanical processing of the raw parts and assembly of all accessories. With state-of-the-art CNC processing machines, we can achieve a precise reproducible of our products in only 2 clamping operations. Herewith, we produce casting results even in the largest flasks, which are unsurpassed so far.

The history of E-Form

The businessman Hermann Rosendahl and the technician Willi Bosselmann founded the company on April 1, 1920 under the name Bosselmann & Co. in Ennepetal-Rahlenbecke. First, the production included the manufacture of forged flask parts, whereby – as usual at that time – most flasks were manufactured as clamping frames.

Shortly after start of production, the plant was moved to Altenvoerde-Walkmühle and remained there until 1957, where it survived the economic crises of the Weimar Republic, albeit with great difficulty. Willi Bosselmann retired at the end of the 1920s from the company. His partner Hermann Rosendahl continued the company as sole owner; shortly afterwards he was supported by his son Werner Rosendahl, who managed the branch factory founded in Gevelsberg in the mid-30s. Only clamping frames were produced in this plant, while the Altenvoerde plant produced flasks of a larger and more complicated type.

Like many other companies at that time, Bosselmann & Co. had to work for armaments production during the World War II. After the end of the war, however, the warehouse was full: numerous completed and prefabricated flasks – mainly deliveries for Sudetenland – could no longer be delivered. Since the individual foundries resumed their production relatively quickly after 1945, Bosselmann & Co. sold its inventories well. Slowly, the new production started again, although the producement was associated with difficulties.

After the currency cut in 1948, things went quickly; there was a lot of catching up to do and new workers were hired. Werner Rosendahl did not experience the new upswing: he died in 1949; the company grew constantly. In 1957 it was moved to its present location in Ennepetal-Altenvoerde, Loher Straße, and at the same time renamed “Ennepetaler Formkastenwerk”. The move to the new and more spacious factory halls and office buildings made it possible to rationalise production to a large extent and to use modern machinery to meet the increased requirements of the foundry industry. In 1960 Hermann Rosendahl died, who had tirelessly made the plant into a leading manufacturer of flaskes.

After his death the company was transformed into a limited partnership, and Marianne Bühren-Rosendahl – daughter of the company founder – took over as the director and sole owner the management  of the company, together with her husband Erwin Bühren and the authorised signatory Günter Hochwahr. The company logo “e-form”, which has become a household name in the global foundry industry to this day, also became famous at this time. In the 1960s, the production of flasks in welded constructions for semi-automatic and fully automatic vibratory press moulding plants was started. These flasks became an essential part of the production programme and the clientele grew constantly. Already at this time the clientele was not limited to Europe. Foundries from North and South America as well as some African and Asian countries bought flasks from e-form.

On April 1, 1970, the company’s 50th anniversary was celebrated with many guests from home and abroad. In the mid-1970s, NC technology also found its way into the machining of flasks and cooling cars. However, the investment volume of the foundries decreased very much in the following years. Of course, this situation also affected the flask. Many foundries had to close their doors due to the economic situation. In 1983 Erwin Bühren died suddenly and too early. Marianne Bühren-Rosendahl retired from active business at the end of 1984 and son Werner Bühren became sole owner and managing director. At his side is his wife Carola Bühren. She regulates the financial interests of the company. Günter Hochwahr, authorized signatory, retired at the end of 1984.