Low-Temperature Non-Metallic PET Heating Film
Low-temperature non-metallic PET heating film is a high-performance, planar flexible heating element specially engineered for low and medium constant-temperature thermal management scenarios. Unlike conventional etched metal circuit heating films that rely on metallic foil as heat-generating medium, this series of heaters adopts premium non-metallic conductive materials including high-purity carbon paste, uniform carbon fiber distribution and graphene conductive layers as the core heating medium. The entire functional heating layer is securely hot-pressed and fully encapsulated between double-layer PET polyester insulating films under high temperature and high-pressure lamination technology, forming an integrated, sealed, insulated and durable flexible heating structure with zero exposed conductive circuits.
With an ultra-thin overall thickness ranging from 0.18mm to 0.28mm, the heating film features extremely lightweight texture, superior softness and outstanding bending performance. It supports diversified customized contour processing, including regular geometric shapes such as square, rectangle, full circle and ring, as well as complex irregular profiling, hollow cutouts, position avoidance openings and customized electrode lead layouts. The highly adaptable structural design enables perfect fitting installation on flat surfaces, slight curved surfaces and irregular enclosed cavities, making it highly compatible with compact assembly space of precision medical equipment, analytical instruments and portable electronic devices.
Adopting uniform planar heat radiation principle, the non-metallic heating layer delivers extremely low thermal inertia and ultra-fast temperature response speed. The heat distribution across the entire heating surface is highly consistent and balanced, with overall surface temperature difference strictly controlled within 3℃. It completely eliminates local overheating, hot spots and uneven heat concentration problems commonly found in traditional resistance wire heaters, ensuring stable, gentle and uniform low-temperature heating effect throughout long-duration operation.
The imported PET polyester insulating substrate provides exceptional electrical insulation strength, excellent dielectric stability and reliable voltage resistance performance. The finished heater can withstand 1500V AC high voltage withstand test for 1 minute without breakdown or leakage current, with insulation resistance exceeding 5MΩ. The whole heating structure operates in completely flame-free, safe and isolated status, fully complying with medical equipment safety standards and household appliance insulation regulations.
Featured with ultra-low moisture absorption rate, excellent anti-oxidation performance and stable physical and chemical characteristics, the non-metallic heating film maintains consistent resistance value and stable heating output under long-term continuous power-on conditions. It can withstand frequent slight bending, repeated folding and daily mechanical vibration without circuit disconnection, resistance drift or functional failure, achieving ultra-long service life and stable cyclic working capability.
Designed specifically for low-temperature constant-temperature maintenance, the standard continuous working temperature range is from room temperature up to 85℃, providing mild, safe and non-scald heating output, which perfectly matches the constant-temperature warming, thermal insulation and anti-condensation demands of precision equipment and human-contact heating products.
To achieve intelligent and accurate temperature control, the heating film reserves standardized mounting positions for NTC thermistors and temperature sensors, which can cooperate with external intelligent temperature control modules to form a complete closed-loop constant-temperature control system, realizing real-time temperature monitoring, precise temperature adjustment and over-temperature protection functions. Optional PSA pressure-sensitive adhesive backing is available for one-piece pasting installation, greatly simplifying assembly procedures and improving fitting flatness and structural stability.
All core technical parameters including working voltage, surface power density, heating area, external outline shape and installation structure can be fully customized according to customer’s drawings, dimensional requirements and actual application environments.
Widely applicable for medical physiotherapy heating components, clinical portable warming equipment, laboratory precision constant-temperature modules, wearable thermal preservation devices, intelligent pet constant-temperature mats, testing equipment low-temperature working stations, electronic instrument anti-condensation heating and various civil and industrial low-temperature constant-temperature heating fields.
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