Advanced PCB Via Hole Plugging Techniques for Global Electronics Manufacturers
As a leading PCB manufacturer in China, we specialize in solving complex via hole blockage challenges for international electronics exporters. Our technical expertise ensures reliable solutions for high-density interconnect PCBs used in global supply chains.
2.2 Screen Printing Method for Aluminum Sheet Via Hole Plugging
Our optimized screen printing plug hole technique utilizes CNC-drilled aluminum sheets to create precision screen plates. This cost-effective PCB manufacturing solution delivers:
- Complete via hole oil coverage
- Flat plug hole surfaces
- Consistent wet film coloration
Critical process parameters include strict 30-minute work limits post-plugging and specialized thermal curing profiles to prevent solderability issues on pads.
Common challenges like foam residue at hole edges after hot air leveling (HAL) are addressed through our proprietary process controls, making this method ideal for budget-conscious PCB buyers.
2.3 Soldering Method Post Aluminum Plugging
This PCB via hole treatment combines mechanical and chemical processes:
- CNC aluminum sheet drilling
- Precision screen plate fabrication
- Dual-sided protrusion filling
- Controlled thermal curing
While effective for oil retention during HAL, our quality team notes potential tin bead formation that may not meet stringent international PCB standards. We recommend this for applications where minor cosmetic imperfections are acceptable.
2.4 Integrated Solder Mask and Via Hole Plugging Solution
Our most advanced PCB manufacturing technique combines:
- 36T/43T screen mesh implementation
- Specialized backing plate systems
- Single-process completion
This time-efficient PCB production method solves key industry pain points:
“Through extensive R&D, we’ve optimized ink viscosity and screen pressure to eliminate air voids and hidden tin defects that plague conventional methods.” – Our Technical Director
Now implemented in mass production, this solution delivers:
- 100% oil retention in vias
- Zero HAL tin contamination
- 30% faster cycle times
As your trusted PCB supplier in China, we continuously refine these techniques to meet global export quality requirements while maintaining competitive PCB manufacturing costs.