PI 加热膜和 PTC 加热膜

Heating Membrane General Membrane Structure #

PI heating film (Polyimide heating film) and PTC heating film (Positive Temperature Coefficient thermistor heating film) each have their own advantages and disadvantages and are suitable for different application scenarios. However, in general, they all have a similar membrane structure.

Heating Membrane Structure and Advantages #

Functional layers: metallized oxides (e.g. ITO), silver-nickel conductive layer, etc. to ensure good electrical heat exchange efficiency;
Structural layer: High strength PI to ensure mechanical strength and heat resistance;
Fast warming: the surface temperature can rise to 60℃ within 15s after energized;
Lightweight: 40% volume reduction compared to first generation resistive wire;

Difference between PI heating film and PTC heating film #

PTC Heater #

New energy vehicles in addition to the three electric, PTC heater is also an important device on the new energy vehicles. It has the advantages of small thermal resistance, high heat transfer efficiency, is a kind of automatic constant temperature, power saving electric heater. It is a kind of automatic constant temperature, electricity saving electric heater. Its outstanding feature lies in the safety performance, any application will not produce such as electric heaters such as the surface of the heater “red” phenomenon caused by scalding, fire and other potential safety hazards.
In the PTC heater for electric vehicles, IGBT is a relatively large heat generating element, which needs thermal conductive insulating material to enhance heat dissipation. PI heating film is also a key material used in PTC heaters, which has good dielectric properties, excellent insulation strength, electrical strength, heat conduction efficiency and resistance stability. This enables it to be widely used in the heating field and can obtain a fairly high temperature control accuracy.PI heating film is also a uniform film that provides thermal conductivity and mechanical toughness for electronics and automotive in applications.

Heating Film Application Areas #

• New energy industry: automotive PTC heaters and battery systems in the application, to ensure temperature uniformity, lightweight;
• Wearable Devices: In the medical device field, PI heating film is used to make wearable devices, such as smart bracelets and smartwatches, which can generate heat through the PI heating film to provide warmth or physical therapy for the user;
• Home furnishings home: windows, wall construction materials, etc. to ensure a constant indoor temperature;
• Outdoor accessories: skiing glasses and car mirrors for good visibility and snow removal.户外配件：滑雪眼镜和汽车后视镜中应用，保证良好的可见度及除雪性能

Imported PI heating film flexible coating equipment #

Naxau Roll-to-Roll Flexible Coating Series → → Model R650（2024型）