Kapton® Polyimide Heaters
When you require a thin, fast response heater solution that provides precise heat distribution, Kapton® (Polyimide) heaters are ideally suited for a multitude of applications. Durex Industries manufactures Kapton® heater elements constructed of a thin, etched-foil circuit laminated between two lightweight polyimide films that provide high dielectric strength, superior chemical resistance and low outgas characteristics.
Kapton® is a Registered Trademark of DuPont
Polyimide Heater Design Advantages
In addition to being lightweight, Kapton flexible heaters also provide the following advantages:
- Precise heat distribution and zoning with intricate etched foil heating elements.
- Ultra-thin profile at a typical 0.007” (0.18mm) value that promotes efficient heat transfer to parts
- Very low outgassing for applications that do not tolerate contamination
- High solvent and chemical resistivity
- Ideal for extreme temperature environments such as vacuum and space applications.
- Semi-Transparent film allows easy visual inspection of parts and internal structures
Considerations when Selecting a Kapton® Polyimide Heater
When choosing a polyimide heater, there are several factors to consider. A Kapton® heater can be an excellent choice when the following are applicable:
- Silicone rubber or other flexible layered materials cannot be used
- High power density (watt density) is required
- Chemical exposure
- Outgassing may cause contamination, fogging or other undesirable issues
- Exposure to radiation such as in satellites
- Use in vacuums
- Precision contours such as holes, notches, cutouts, etc. are required
- Integrated sensors, thermal fuses, connectors, etc. are required
Kapton Heater Assemblies and Heated Parts
Heater assemblies and heated parts are perfect for OEMs looking for a one-stop shop who can provide ready-to-install heater solutions for their equipment. Durex has years of experience working with OEMs to develop creative solutions that meet the complexity of today’s equipment requirements. It can be as simple as designing custom distributed wattage heat profiles on the Kapton heater. Or it can be as complex as adding integrated sensors, fuses, harnesses, connectors, and including factory bonding to the part. Customers then just pull the parts out of the box and install the assembly into their equipment providing a “plug and play” solution.
Contact the Kapton Heater Experts Today
For over 40 years, Durex Industries has been an industry-leader of thermal control solutions. We are dedicated to quality processes and are committed to working with you to ensure we provide solutions that surpass your expectations. Our engineering expertise, in-house capabilities, and innovative product development make us your best choice for Kapton® heating elements.
Kapton Heater Specifications & Options
- Sizes: Custom, consult Durex Industries for your application requirements
- Standard Thickness: .007" in
- Maximum Watt Density: 50 W/in² (depending on application, consult Durex for higher densities)
- Standard Dimensional Tolerances: Less than 12" ± .062, Greater than 12" ± .125
- Maximum Operating Temperature: 450°F (232°C)
- Minimum Operating Temperature: -319˚F (-195˚C)
- Wattage Tolerance: ±10%
- Dielectric Strength: 1000 VAC
Heater Mounting Options
Pressure Sensitive Adhesive
PSA is the most common option for mounting Kapton® heaters. By selecting proper materials, including the release agent, you can promote a strong bond and effective heat transfer.
Kapton® heaters can also be clamped to their heating surface. A pressure plate is then fastened in place. To ensure even distribution of heat, and to protect the Kapton heater, a pressure pad or insulation layer is advised. The work surface should be free of any debris, dirt, chemicals, bumps, or grooves. This will protect the Kapton heater as well as prevent overheating.
When mounting to a smooth cylindrical surface, Kapton® heaters can be mounted with self-fusing tape. This will provide a safe operation and even transfer of heat.
Kapton® (polyimide) Heater Control Options
For temperature control on Kapton® heaters, Durex recommends a resistance temperature detector (RTD) or thermocouple. Temperature sensors are mounted to the surface of the Kapton heater and send a resistance measurement to an external temperature controller that cycles the heater at a set temperature.
Request a quote or contact us for assistance.
Flexible Heaters - Silicone Rubber & Kapton® 08-04-14 1.6MB