Published on June 7, 2026
Helped power equipment manufacturer resolve bubble issues in vacuum interrupter silicone encapsulation. Switched from solid silicone compression molding to LSR injection molding, yield rate improved from 70% to 98%.
A manufacturer of vacuum interrupter products faced a critical quality issue. They were using horizontal injection molding and flat plate vulcanizing machines, but both methods produced significant defects.
The main problem: bubbles trapped inside the product. These bubbles caused:
1. Horizontal injection: Air trapped in thick sections
2. Plate vulcanization: Inconsistent heat distribution
3. Material flow: Inadequate venting in mold
4. Process timing: Wrong injection/hold pressure profile
| Parameter | Before | After |
|---|---|---|
| Bubble defects | 15% | 0.5% |
| Electrical test pass | 82% | 99.5% |
Production yield improved from 82% to 99.5%. Customer satisfaction restored. Now producing 200,000 pieces annually with zero field failures.
"Xiangchu diagnosed the root cause that had troubled us for months. Production is now stable and efficient."
Oakley's LSR injection molding technology is excellent, completely solved our bubble issue.
