As flexible and variable as our silicone heating mats, kapton (polyimide) heating foils and polyester heating elements are, so fixed is their maximum temperature application limit of 200°C. Above this threshold, surface heating elements are insulated either with mica insulating material (mikanite and phlogopit) or with ceramics. In order to give these naturally brittle materials a certain degree of dimensional flexibility, they are framed in metal if required or manufactured as segment radiators. Standardized heating bands can also be used for cylindrical components such as pipes, plasticizing units or injection moulding nozzles.
Alternatively, heating plates and hot surfaces can also be equipped close to the contour with
- (square) heating cartridges,
- (square) pipe radiators or
- the particularly bendable HotMicroCoil heating elements.
With correspondingly tight-meshed assembly or laying, quite homogeneous temperature profiles can also be achieved in the surface, and this for operating temperatures up to 750°C.
The following selection table gives you an initial overview of which basic surface heating types are eligible for your application.
|Flat Heating Elements
(up to 200°C)
|Wire Wound||Etched Foil|
|* higher surface loads can be achieved, depending on the application, with very good heat consumption and fast control
(No warranty claims can be derived from this table)
|Continuous temperature resistance||350 °C||450 °C||-60 °C - 200 °C||-60 °C - 200 °C||-269 °C - 200 °C||-30 °C - 90 °C|
|Continuous temperature resistance with self adhesive foil||-||-||-60 °C - 180 °C||-60 °C - 180 °C||-60 °C - 180 °C||-30 °C - 90 °C|
|Short term temperature resistance||700 °C||900 °C||250 °C||200 °C||200 °C||100 °C|
|Recommended max. watt density*||4,0 W/cm²||5,0 W/cm²||0,8 W/cm²||0,8 W/cm²||0,8 W/cm²||0,2 W/cm²|
|Power tolerance||+5 / -10%||+5 / -10%||+5 / -10%||+5 / -10%||+5 / -10%||+/-10%|
|max. dimension||2000 x 1000 mm||2000 x 1000 mm||940 x 3000 mm||595 x 2500 mm||285 x 550 mm||1000 x 600 mm|
|min. dimension||30 x 30 mm||30 x 30 mm||30 x 30 mm||20 x 20 mm||25 x 25 mm||25 x 25 mm|
|min. height||2,0 mm
|1,1 - 3,0 mm||0,8 - 1,5 mm||0,2 mm||0,2 mm|
|Dimension tolerance||+/- 1 mm||+/- 1 mm||+/- 1 mm||+/- 1 mm||+/- 1 mm||+/- 1 mm|
|Quantities||from 1 piece||from 1 piece||from 1 piece||from 1 piece||from 1 piece||from 25 pieces|
|min. bend radius||-||-||5 mm||5 mm||2 mm||5 mm|
|Adhesive foil possible||no||no||yes||yes||yes||yes|
MICANITE is a kind of insulation paper which is impregnated with a heat resistant binder and afterwards pressed in several shifts under heat and high pressure to plates. This material is heat resistant up to 350 °C, as special construction (Phlogopit) up to 450 °C, and is used for the wire wound formers as well as for the encapsulating cover plates...learn more
Chapter Flat Heating Elements
Multifunctional use, uniform heating: Contact heating of flat surfaces. We manufacture flat heating elements in several materials, customised to your application.