Method for producing a panel-shaped area heating element and an area heating element produced according to this method, and wall portion or ceiling portion or floor portion comprising the area heating element

Abstract

The invention relates to a method for producing a panel-shaped area heating element (1) comprising the steps: a) providing at least one first paper/cardboard layer (2); b) applying a gypsum slurry layer (3) on a free side of the first paper/cardboard layer (2); c) molding the gypsum slurry layer (3) to a gypsum slurry layer (3) with a uniform layer thickness (t); d) applying at least one second paper/cardboard layer (5) on a free surface of the gypsum slurry layer (4); e) curing the gypsum slurry layer (3) to a gypsum layer (30); f) cutting into individual panels and drying the individual panels; g) wherein a paper/cardboard structure (12) which is electroconductive at least after curing the gypsum slurry layer (3) is used for forming the at least one first and/or second paper/cardboard layer (2; 5). It also relates to an area heating element produced according to the method and a wall portion or ceiling portion or floor

Dependencies are inferred from the claim text.