公开(公告)号：US20250155136A1

公开(公告)日：2025-05-15

申请号：US18836419

申请日：2023-05-17

Applicant: SAINT-GOBAIN PLACO

Inventor： Klaus Schmalbuch ,  Thomas Schilling

IPC: F24D13/02 ,  B28B19/00 ,  B32B13/08

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