History

From the first developments in plastics processing to the founding of the Infinex Group: the history of Interplast is shaped by technical development, investment and continuous growth.

1968

Founding of DUROtherm Kunststoffverarbeitung GmbH by Werner Saathoff and Hermann Hartl

1989

Product development of the first dimpled sheets and design of production lines, initial prototype fabrication

1990

Founding of Interplast Kunststoffe GmbH, start of series production with the first 2 m production line

2000

Move to the new production facility, investment in additional lines, start-up of the first 4 m production line

2004

Spin-off of Interplast and TRIPLEX from the DUROtherm Group, construction of the new administrative building

2007

Construction of the new 5,000 m² production building in Haiterbach

2008

Start of production in the Czech Republic

2009

Founding of the Infinex Group

Status: 05-2026