The "Rosel" holding (part of Rostec) has presented a new technology for high-precision production of flexible polyamide printed circuit boards, which are used in the production of smartphones, tablets, medical equipment, robots, and specialized equipment. This was reported in the holding's press service.
Flexible printed circuit boards are made of special polymers — polyamides. They have a number of advantages compared to traditional fiberglass boards — lightness, elasticity, and heat resistance.
The technology of fixing a flexible blank using auxiliary materials was used for the development.
With this approach, the polyamide blank is located between two sheets. The bottom one is made of high-density fiberboard with a special coating, which forms a flat surface under the polyamide. Additional pressing of the polyimide is provided by the upper overlay aluminum sheet, which is placed above the blank. This approach guarantees drilling accuracy within 20-25 microns.
However, the high flexibility of the material creates certain difficulties in processing and high-precision drilling. This problem was solved at the "Electropribor" production association of the "Avtomatika" concern. Alexey Troshin, General Director of JSC "PO "Electropribor", noted that the company has successfully completed the development of technological processes that allow producing products ranging in size from 24x30 mm to 345x313 mm.
Such boards remain operational in the temperature range from -60°С to +120°С. Today we produce double-sided polyamide boards of the 5th accuracy class, and in some technically justified cases — even with elements of the 6th accuracy class.
Earlier www1.ru reported that a mini-factory for the production of printed circuit boards was created at RTU MIREA.
Read materials on the topic:
One story high: the largest military printed circuit board in Russia was manufactured in Yoshkar-Ola