Flexible Technologies

Etched Foil and PTF flexible heaters technologies

Alper PTF flexible heaters technologies

Alper PTF flexible heaters technologies

Thanks to the use of inks or electrically conductive pastes printed on a polymer film, Alper creates flexible heaters in various shapes and thicknesses, typically very thin around 0.2 mm, appropriate to the type of product where they must be applied.
Special inks formulated by Alper, in some cases, can be prepared in order to give a behaviour known as "PTC” - Positive Temperature Coefficient-: once a certain level of temperature is reached these inks limit the production of heat without the need of an applied thermostat avoiding in such way the danger of overheating.

The peculiarity of this type of heaters makes them so versatile that they can be used in various fields satisfying the needs both of industry market and consumer goods.

Advantages compared to traditional heaters

  • The heating element is printed on a very thin and flexible polyester support and can therefore be placed in very narrow spaces, adapting to curved surfaces.
  • There are available various forms which can produced upon request also with holes or slits for applications that might request it.
  • The desired temperature is reached in a short time and low consumption.
  • You may have different temperatures over the heating surface, simply by printing the heating elements in various forms depending on where and how you want to heat.
  • The back side can be made self-adhesive, so as to adhere to various surfaces.
  • Different types of electrical insulation are available, depending on where the heater needs to operate.
  • The heaters are available in all voltage supplies, including the low voltage.

PTC - Positive Temperature Coefficient - inks

These are inks that allow production of heaters which resistance is not constant during changes of temperature, but increases when the temperature raises.
For practical purposes, this means that the produced heat reduces as high as the temperature is reached.
This feature is very important from various aspects, including the safety one: heaters of this type are inherently self-limited.
Power decrease factor

Power decrease factor (P(T°)/P(20°)

PTC factor

PTC factor ((R(T°)-R(20°))/R(20°)