E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
154/72.2
E04F 15/16 (2006.01) B29D 99/00 (2010.01) B32B 3/10 (2006.01) B32B 25/04 (2006.01)
Patent
CA 1213503
ABSTRACT A Process for the Production of a Light-coloured, Elastic, Electrically Conductive Floor Covering A process for the production of a light-coloured, elastic, and electrically conductive floor covering, in particular for use in operating theatres and areas in which there is an explosion hazard. An under layer containing 3 to 80% by wt. carbon black and/or graphite and of unvulcanized rubber, is pressed and vul- canized to a bindable upper layer that contains a maximum of 0.5% by wt. carbon black and/or graphite and is of a material that, under the conditions of the pressing and the vulcanization process, displays a higher flow viscosity than the under layer. The upper layer is provided with regularly and/or randomly distributed perforations, these being of a minimum diameter of 1 mm and so disposed that the smallest distance between them is no less than 2 mm and the largest no more than 40 mm. The pressing process is such that the material of the under layer fills the cutouts made in the upper layer right up to the surface of the upper layer. The floor covering so produced is economical and aesthetically pleasing by comparison with prior art coverings, has good wear-resistance properties and is effective in reducing the risk of explosion in high-risk areas.
438649
Graab Gerhard
Heckel Klaus
Kuhl Hans-Michael
Borden Ladner Gervais Llp
Carl Freudenberg Kg
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