What is a Flexible PCB？

Flexible PCBs (FPC) are PCBs that can be bent or twisted without damaging the circuits,
which means the boards can bend freely to conform to the desired shape in the applications.

The material of the substrate is flexible, such as Polyamide, PEEK, or a conductive polyester film.

DuPont manufactures  substrates and materials for rigid and flexible circuits, including:

Polyimide films

Laminates

• Acrylic-based adhesive solutions
• All-polyimide solutions
• Epoxy adhesive solutions
• Fluoropolymer adhesive solutions
• Thin copper clad polyimide laminate

Circuit imaging materials

• Dry film photoresist
• Screen printed inks

DuPont offers several types of flexible circuit materials for use in the manufacture of flexible printed circuit boards (PCBs).

Some of the most popular DuPont flex PCB materials include:

1. Pyralux: Pyralux is a family of flexible circuit materials that includes copper-clad laminates, coverlays, and adhesive systems.
These materials are designed for use in high-reliability applications where flexibility, thermal stability,

and resistance to chemicals and moisture are critical.

2. Kapton: Kapton is a polyimide film that is used as a substrate for flexible circuits. It is highly resistant to heat,
chemicals, and radiation, making it ideal for use in harsh environments.

Kapton is also highly flexible, which makes it well-suited for use in applications where the circuit must be able to bend or flex.

3. Teflon: Teflon is a fluoropolymer film that is used as a substrate for flexible circuits.
It is highly resistant to chemicals and has excellent electrical properties, making it well-suited for use in high-frequency applications.

Teflon is also highly flexible, which makes it ideal for use in applications where the circuit must be able to bend or flex.

4. Adhesives: DuPont also offers a range of adhesives that are used to bond the various layers of a flexible circuit together.
These adhesives are designed to provide strong, reliable bonds that can withstand the stresses of flexing and bending.

Overall, DuPont flex PCB materials are known for their high quality, reliability, and performance.
They are widely used in a variety of industries, including aerospace, automotive, medical, and telecommunications.