The key technology of ceramic atomizer core - thick film printing technology

Ceramic atomizer cores are ceramic atomizer chips with stable atomization and wear resistance. They are widely used in e-cigarettes, automotive nozzles, and the pharmaceutical industry.They consist of ceramic, a thermally conductive layer, a resistor layer, and electrodes. Atomization is achieved through heating resistors. However, unstable and uneven temperature distribution can lead to localized burning and insufficient atomization. To ensure stable atomization, the heating coils require more refined and customized processing. A common method currently involves metallizing ceramics through thick-film printing technology, resulting in porous ceramic atomizer cores that heat quickly and stably.

Jianyu Screen Printing has highly mature process technologies and solutions for thick-film printing on ceramic atomizer cores. As early as 2018, we developed and produced the JY-IC-200DK, a specialized thick-film printer for atomizer cores. Since its launch, over 100 units have been sold. The printer offers stable printing results, with a resistance tolerance of ±5%. It heats up within a second, reaching the preset temperature, enabling rapid atomization. The following is a brief description of the thick-film printing process for atomizer cores (e-cigarettes) for reference only.

Printing process

1.The printed surface of the product must be flat and consistent (three layers of printing are recommended).

2.The screen requirements are as shown below (for reference only).

3. Printing Environment: Cleanroom, room temperature between 22-26°C, relative humidity approximately 65%.
4. Printing Parameters: Screen pitch 1.4mm, printing pressure 1kg, printing speed 60, ink return speed 80.
5. Drying: After printing, dry at 150°C for half an hour.
6. Sintering: Requires a vacuum sintering furnace with a vacuum level below 10 Pa.

Sintering process

Heat to 350℃ in 30 minutes and keep warm for 30 minutes → continue heating to 600℃ for 30 minutes and keep warm for 30 minutes → continue heating to 870℃ for 60 minutes, then keep warm for another 30 minutes and cool naturally to room temperature → vacuum degree is below 10 Pa.

Comparison of sintering temperature curves

来源：建宇网印

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