Saint-gobain Ecophon Ab

St. Jude Medical Ab

Torbjörn Persson

Rolf Hill

Andreas Blomqvist

Thomas Nilsson

Jan Wilkens

Ola Karlsson

Mikael Möller

An acoustical geopolymer panel element includes a layer including a fibre component and a geopolymer binder made from a mixture including ground mineral wool, and an additional layer including mineral wool. The layer including a fibre component and a geopolymer binder has a density in the range of 20-400 kg/m, a porosity in the range of 0.75-0.99 and a thickness in the range of 5-75 mm. The ground mineral wool may be ground glass or stone wool and the fibre component may be a wood fibre component, a polymer fibre component and/or a mineral wool component. Further, a geopolymer mixture is provided upon recycling mineral wool which is ground to powder and mixed with an alkali activator component. Additionally, a method for producing acoustical geopolymer panel elements includes grinding elements including mineral wool for provision of a powder component.

Method for recycling mineral wool, a method for production of acoustical panel elements and such an acoustical panel element

A device for suspension of a suspended ceiling, comprising an elongated suspension member () having a first end () and an opposing second end (), an anchoring head () being arranged at the first end (); a housing () having an open top side () and an opposed, closed bottom side (), the () housing defining a housing cavity () adapted to be filled with an adhesive (); and a suspension member holder (). A passage () is provided extending through the closed bottom side () of the housing (), wherein the elongated suspension member () in an assembled state of the device extends through the passage () with the first end () positioned inside the housing cavity () and the second end () positioned outside the housing cavity () and wherein the suspension member holder () in the assembled state of the device positions the first end () and the thereto arranged anchoring head () of the suspension member () at a distance Hfrom the closed bottom side (). The invention also relates to a suspended ceiling system comprising such a device as well as a method for suspending a suspended ceiling in a structural ceiling.

Device and method for suspension of a suspended ceiling and a suspended ceiling

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Helsingborg, Sweden

Torbjörn Persson