Flexible Circuit (FPC) Materials
The most widely used Flexible Circuits & flex printed circuits (FPC) material today is manufactured by Dupont Corporation and is called "Kapton". This polyimide film based material is resistant to heat, has dimensional stability and a low dielectric constant of 3.6. The follows are basic Kapton materials:
Kapton FPC Materials:
Dupont Coverlay
Dupont Copper Clad
Dupont Sheet Adhensive
There're also other companies whom make good Flexible Circuits & flex printed circuits board (FPCB) material, such as Rogers Corporation and is called "Rogers"
Roger FPC Materials
Rogers-Liquid-PhotoImageable-Coverlay
Rogers-RFlex1000
Rogers-RFlex2005UL