Printed foil elements

Economical and precisely manufactured

DESCRIPTION

BACKER: FOIL AND FLEXIBLE ELEMENTS: Flexible elements, or foil elements, offer many advantages, besides the material being flexible. For instance, the option of multiple circuits or multiple voltages in the same element, or the ease of positioning sensors. The elements are suitable for various applications in a wide range of areas, including communications, vehicle accessories, monitoring, medicine, individual comfort heat, domestic heating, etc.

GENERAL INFORMATION: "Flexible elements, or foil elements, offer many advantages. The material is flexible and allows multiple circuits or multiple voltages in the same element or the possibility to locate a sensor. The elements are suitable for different applications in a wide range of business such as communication, vehicles, monitoring, medicine, individual comfort heat, domestic heating etc. We can produce elements within a high range of technical specifications, for example power from 0 to 10 Watt/cm² and insulation material from –270°C to +400°C."

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Flexible foil elements in a wide range of materials such as silicone, polyimide, polyester, aluminum etc.

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POLYIMIDE: Polyimide is a thin, semitransparent material with excellent dielectric strength. It is also resistant to most chemicals, acid and basis. The temperature range is between as low as -271°C (liquid helium) and as high as 200°C. If requested we have the possibility to add components such as thermistors, sensors and IC circuits, by soldering them to the element. (One side of the foil element is furnished with an adhesive substance.)

POLYESTER: The etched heating element has superior heat transfer and exceptionally uniform heat output, which results in a faster warm-up cycle and longer life. Use this heater to cover large
areas with even heat, for flat or gently curved surfaces. Etched foil polyester heaters can be designed and fabricated in many types of configurations to fit the size and shape required in your application.

PEN is a heater similar to PET but with much better properties. PEN is a little more expensive than PET, but have higher chemical, thermal, mechanical and electrical properties. The material is common used in electronic devices.

PVC heaters are commonly used for applications in
environments with high humidity or wet conditions. It has features as protection class IP 67 and skin contact approved silicone, medical grade. The heater is also very flexible and can in advantage be used where flexibility is needed.

Heating element integrated in FRTP (Fibre Reinforced Therm plastic), a unique product patented by Calesco (part of Backer BHV). The heating circuit is well protected in an extremely durable enclosure with superior impact and abrasion resistance properties. The material is also moisture resistant and therefore well suited for harsh environments. The stiffness makes it s uitable for both stand alone applications as well as integration in other equipment. Many different surface finish are possible, from soft thermoplastic rubber to stiff shiny surfaces with integrated text or even pictures. The heater can also be laminated together with heat-insulation as well as metal parts. The unique manufacturing technique enables a large freedom of design.

Aluminium foil with heating cable extruded in silicon and supported between two self-adhesives aluminum foils. One of the aluminium foils are also adhesive on the bottom side, in order to be sticked onto the surface of the Appliance. PVC cables can be used if low wattages and temperature up to 20
W/m, and 105°C. In that case the cables are fixed directly onto one aluminium foil. We can also offer a solution with a safety fuse in some part of the
product and even a thermostat.

APPLICATIONS

  • Rearview mirror heaters
  • Underfloor heating
  • Bathroom mirror heaters
  • Preventing ice and condensation
  • Refrigeration, evaporation systems
  • Medical and laboratory instruments
  • Hand grip heaters, handles on chainsaws
  • Water bed heaters
  • Heating cabinets for food
  • Diesel filter heaters
  • Wind screen wiper heaters
  • Photographic equipment, lens heaters
  • Keyboard heaters, LCD displays

Technical data

Type of heating

Air heating
Liquid heating
Defrosting
Contact heating

Material

Polyimide (-60°C / 200°C)
Polyester (-60°C / 105°C)
PET and PEN (-60°C / 160°C)
PVC (-40°C / 70°C)
FRTP - Fibre reinforced therm plastic (-40°C / 100°C)

Dimension

Acc. to customer specification
Almost without limits
Maximum width app. 600 mm

Assembly

Adhesive
Clamping
Attached on sheet metal

Connection

Cables, tab terminals

Design

Many types of configurations to fit the size and shape required
Multiple circuits or voltages in the same element
Possibility to add thermistors, sensors and IC cicuits, by soldering

Others

Voltage: Single or three phase
Surface load: From 0 to 10W/cm²

Benefits

  • High and low temperature range
  • Good chemical resistance
  • Very thin and flexible, space saver
  • Soldered components possible
  • Low weight, possible small sizes
  • Long duration product
  • Easy assembly, self adhesive film
  • Precizely distributed wattage
  • Economical, cost efficient

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