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Company history of Dipl. Ing. Werner Graf AG |
1939
1945
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Werner Graf founds the “Dipl. Ing. Werner Graf” belt manufacturing company as a sole proprietorship in Zurich, Switzerland.
Anton Graf, brother of Werner Graf, purchases real estate on Buechenstrasse in Staad. The property, a former  bell foundry (1874-1940), housed a paint and dye factory from 1940-1953.
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Trademark
HEVALOID®
| 1952
1953
1962
1963
1972
1977
1978
1979
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| Registration of the trademark HEVALOID®.
Werner Graf purchases the property in Staad from his brother.
Construction of the western annexe, a production area for fabricating rubber coating and SOLUTUS belts.
Construction of the “Durisol” workshop for rubber compounding (later used as a grinding/processing shop).
Construction of the eastern annexe comprising a production hall for weaving mills and offices.
Death of Werner Graf, the company’s founder.
Company reformed as a limited company “Dipl.Ing. Werner Graf AG”,
and acquired by co. Leder & CO. AG (today co. Ammeraal Beltech AG, Jona).
Appointment of Mr. Heinrich Sieber as Managing Director.
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|  Heinrich Sieber | 1988
1992
1994
1999
2000
2005
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| Sale of company to Mr. G. Beckh, Herbrechtingen.
Installation of an environmentally-friendly steam boiler with gas burner.
Installation of the long-desired goods and passenger lift.
Reconstruction of the vulcanisation building.
Heinrich Sieber retires. Edgar Seiz appointed new Managing Director.
Demolition of the “Durisol” workshop and construction of new eastern annexe (two-floors) for grinding/processing and weaving mills.
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Edgar Seiz | 2008
2009
2010
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| Installation of a sophisticated ventilation plant with process heat recovery.
70-year company anniversary.
Construction of new cafeteria and classroom for employees and customers.
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