Flexible and rigid-flex boards use polyimide films and adhesives that handle differently from rigid FR-4, affecting lamination, imaging and profiling.
Overview
Understanding flex and rigid-flex pcb manufacturing means understanding both the process chemistry/mechanics and the machines that control it. Here is what matters. Thin flexible cores require careful handling through lamination and imaging, coverlay application instead of solder mask in flex areas, and laser or die profiling rather than routing in delicate zones.
Where It Fits in the Process
Material handling and lamination dominate flex processing; profiling must avoid delamination.
Equipment Categories Involved
- Lamination and Multilayer PCB Equipment
- Imaging and Photo Process Equipment
- PCB Profiling and Routing Equipment
Key Considerations
Dimensional stability of the film and bond between rigid and flex sections are the main yield risks.
Standards and Compliance
Designs and processes in this area commonly reference:
- IPC-6013 (flex)
- IPC-2223 (flex design)
- IPC-A-600
Selection and Comparison
Key trade-offs when specifying for flex and rigid-flex pcb manufacturing:
- Coverlay vs. solder mask
- Laser vs. die-cut profiling
- Adhesive vs. adhesiveless laminate
Recommended Equipment from acfindustry.com
The following machines from our catalog support the processes discussed above:
Automatic Dry Film Laminator
- Model: ACF-IM-02
- Sub-process: Dry Film Lamination
- Automation: Automatic (PC/CNC controlled)
Board Flattening (Anti-Warp) Machine
- Model: ACF-PR-06
- Sub-process: Mechanical Separation
- Automation: Semi-automatic
CNC Forming Machine
- Model: ACF-PR-02
- Sub-process: Routing
- Automation: Automatic (PC/CNC controlled)
CNC Routing Machine (Single Spindle)
- Model: ACF-PR-01
- Sub-process: Routing
- Automation: Automatic (PC/CNC controlled)
Dry Film Preheating Machine
- Model: ACF-IM-01
- Sub-process: Dry Film Lamination
- Automation: Semi-automatic
Film Stripping Machine
- Model: ACF-IM-03
- Sub-process: Dry Film Lamination
- Automation: Semi-automatic
Related Topics
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