FLEXIBLE HEATING ELEMENT Russian patent published in 1999 - IPC

FIELD: electrothermics, manufacture of flexible polymer electric heaters of domestic and industrial assignment. SUBSTANCE: warp of current-conducting fabric in given flexible heating element is made from mass of insulation filaments placed between electrodes and weft is manufactured from complex current-conducting filaments arranged perpendicular to electrodes. Description gives mathematical relationships ensuring electric safety of resistive layer that are employed to calculate number n of current-conducting filaments per unit of length of resistive layer, number K of electrodes and number m of metallized filaments making them. Multicomponent filament of " sheath-core " structure is used in the capacity of complex current-conducting heat-liberating filament. "Sheath" of structure includes fluoride-carrying polyolefin based on carbon black-filled copolymer of tetrafluorideethylene with vinylidenfluoride and "core" has polykaproamode or glass fibers. EFFECT: increased electric safety and reliability of flexible heating element and of article with its usage as whole. 3 cl, 3 dwg, 1 tbl