Flat heaters are made in different shapes and power ratings
We are talking about thin heating elements, used for targeted heating and accurate temperature distribution, produced in a variety of shapes and power ratings that have an ability to optimally solve any heating problem.
Flat Heating Elements are used in cases when a flat side has to be heated symmetrically and effectively. They are constructed of winded heating wire and two shifts of insulation, and have a possibility of custom-made adaption to nearly any surface dimension with a simultaneous achievement of optimal heat allocation over the heated flat side. At the optimal heat transition their working temperatures rise up to 450 °C and surface load up to 7 W/cm².
Thanks to their superior exchange surface with the heated material, lower power density with equal length and power that optimizes the element s lifetime, shorter heater with equal power, which can be formed upon request according to requirements etc., they can have many advantages over the round section heating elements. They can be used in various applications such as heat conduction (for tools, plates, moulds, hoppers), liquid heating (in the oil industry some applications require many kilowatts), air heating (exchanger with plates) and more.
Micanite flat heaters
These heaters provide heat by conduction to flat surfaces. They are an example of versatility of the models with mica insulation for heating applications on any surface including pressure plates to improve uniformity.
Flat strip heaters of mica, also called flat mica heaters, are the heaters that contain micanite insulation. In the middle of the heater, there is a resistance wire, wound on one mica sheet and insulated on both sides by another one. The flat strip heater is protected by a heat resistant stainless steel sheath and provided with custom connections.
Flat mica heaters are suitable for many ways and types of contact heating and can be employed in several applications. They are best suited to heat by conduction and can be used for heating of flat surfaces, or inserted in appropriate slots, to heat metallic masses. We can also place them into injection molding machines, extruders, extusion dies, moulds for plastic materials, press moulding plates, vacuum plastic moulding machines, blow film dies, dies and molds, plates for presses, thermoforming, ovens, food service equipment, tanks and trays, process packaging equipment, packing installations and many other applications. They can be custom designed to fit various forms like machines with holes, slots, fasteners and built in sensors, or thermocouples for accurate heat control. They are appropriate for applications up to 260ºC and surface load up to 7 W/cm².
Flat ceramic heater
Ceramic elements are thicker in construction (12mm) but offer a watt density up to 7 W/cm² and operating temperature up to 600°C.
Generally ceramic elements are more durable than mica elements, thus offsetting the higher price with a longer life expectancy.
Ceramic flat heaters are also suitable for the applications where heat storage is needed.