Innovation In Heating Technology: Revealing The Flexible Polyimide Heater Production Process


In the ever-evolving field of heating technology, flexible etched polyimide heaters are becoming a revolutionary solution, offering countless advantages to various industries. This technology is redefining the way we approach heating applications, providing individual heating flexibility and efficiency. In this article, we will explore the process of flexibly etching heating plates and delve into the complex production process of flexible polyimide heaters.


Flexible heaters are a product family of thin, flexible heating elements that can be attached to various objects to provide frost protection, constant temperature and temperature control from -40°C to +250°C and beyond. The flexible etched heating plate is a heating element based on polyimide. Polyimide is a versatile and durable polymer known for its excellent thermal and electrical properties. Etching refers to complex patterns or circuits on the surface of a polyimide heater that allow precise control of the distribution of heat.

These types of heaters are typically 0.13-0.4mm thick and are used in many industries for fixed pipes, portable rollers, food heating equipment, and many applications. Since silicone rubber has excellent water resistance, it can be used in many outdoor uses. Utilizing etched foil technology, the manufacturing process provides tight spacing control and prevents conductive components from coming into contact with adjacent components.


Thermal control and thermal accuracy of etched foil heaters are also due to the large surface area of the etched element. Compared to wires that transfer heat through the tangent or arcuate areas of a round element, the flat surface area of an etched element provides a uniform and significantly more surface for heat to be transferred effectively and efficiently to the mating heat sink. Line heaters typically need to run at higher temperatures to make up for this difference.

Production process of flexible polyimide heating sheet

The first step is to prepare the base material. The main base material is polyimide substrate, also called PI insulation film, which is thin, light, fast in thermal conductivity, and flexible. Then there is the circuit design. Our engineers make reasonable settings for the layout of the heater circuit according to the customer's product needs. There is also the application of insulation layer. The etched circuit will be insulated, and the solder joints will be used. Glue is dispensed and a layer of silicone is added to cover the solder joints to process the circuit.

After production, the polyimide heaters will be quality controlled and tested, and strict quality control measures will be implemented, including testing the flexibility, resistance and overall performance of the heaters. After testing, the heaters that pass the production must go through final packaging. Foam is used to separate the heating sheets and then packaged.

In short, Danyu has rich production and research experience in producing heater types. Flexible etched polyimide heaters represent a breakthrough advancement in heating technology, providing unparalleled flexibility, efficiency and customization. As industries continue to seek innovative solutions, these heaters will play a key role in shaping the future of heating applications.