The roots of Sihl date back over 500 years, with the first reference being "the old paper mill on the Island" in Zürich. Founded in 1935 taking it's name from a river in Zürich, the Sihl corporation had the perect site for a mechanical paper factory.
In 1990 Sihl merged with Renkers GmbH, a production plant located in Düren bringing more than 100 years of coating experience with them. Originally formed in 1945 Multitec AG, the production plant in Bern was integrated into the Sihl Group in 1991.
Today Sihl Düren (formerly Renkers) and Sihl Bern (formerly Multitec) form the strong Sihl Group and have been an active part of the Italian Diatec Group since November 2003.