Customer Success Story: Electronics OEM Eliminates EMI Shielding Failures with JunSheng HR-BL848
Customer Profile
A fast-growing electronics OEM in South Asia, producing data cables, USB assemblies, and HDMI connectors for major consumer electronics brands. The company exports to North American and European markets where stringent EMI (Electromagnetic Interference) compliance standards (FCC, CE) are non-negotiable requirements for market access.
The Challenge
The customer's existing heat shrink process used basic hot air guns operated manually, creating several critical problems:
- Uneven Shrink Quality: Single-direction heating caused inconsistent shrinkage - one side fully shrunk while the opposite side remained loose, compromising EMI shielding integrity
- Temperature Drift: No closed-loop temperature control meant operators frequently overheated or underheated the tubing, leading to 15-20% rejection rates in final QA testing
- Production Bottleneck: Manual operation limited throughput to approximately 300 pieces per hour, creating backlogs during peak order seasons
- Operator Fatigue: Repetitive manual handling and heat exposure caused high turnover among production staff
After a batch rejection from a European client citing inconsistent EMI shielding, the company urgently sought an automated, precision-controlled solution.
The Solution: JunSheng HR-BL848
The JunSheng HR-BL848 Automatic Wire EMI Shielding Heat Shrink Tubing Machine was selected for its unique dual-side heating architecture and intelligent temperature management system.
Machine configuration:
| Feature |
Specification |
Advantage |
| Heating Method |
Dual-side heating with 2 independent temperature zones |
Uniform 360-degree shrinkage, eliminating one-sided defects |
| Temperature Range |
0 - 260°C, intelligent PID control |
Precise temperature for different tubing materials (PVC, polyolefin, PTFE) |
| Heating Element |
Far Infrared Heating Tubes |
Even heat distribution, energy efficient |
| Conveyor Belt |
High-temperature Teflon mesh belt |
Non-stick surface, rated for continuous 260°C operation |
| Conveyor Speed |
0 - 6 m/min, adjustable |
Flexible dwell time for different tubing wall thicknesses |
| Heating Chamber |
800 x 480 x 280 mm |
Accommodates multiple cables simultaneously |
| Hot Air Fan |
Integrated circulation fan |
Ensures uniform chamber temperature distribution |
| Machine Type |
Enclosed benchtop |
Compact footprint, safe operation, minimal heat loss |
Implementation & Results
The HR-BL848 was integrated into the customer's cable assembly line within one week. JunSheng provided remote video commissioning support and comprehensive operation training.
Measurable outcomes after 2 months:
| Metric |
Before HR-BL848 |
After HR-BL848 |
| EMI Shielding Pass Rate |
80-85% |
100% (zero shielding defects) |
| Throughput (per hour) |
~300 pcs |
~1,200 pcs |
| Operators Required |
2 per shift |
1 (loading/unloading only) |
| Energy Consumption |
3 hot air guns (4.5kW total) |
Single machine (2.2kW) |
| Customer Returns (EMI-related) |
3-5 per quarter |
0 |
Customer Testimonial
The QA director shared: "Since installing the HR-BL848, we haven't had a single EMI shielding rejection. The dual-side heating is the game-changer - every cable comes out with perfectly uniform shrinkage. Our European client actually increased their order volume after re-auditing our line. The machine's simplicity also means we can train new operators in under an hour."
Conclusion
The JunSheng HR-BL848 proved to be the definitive solution for precision EMI shielding heat shrink applications. By replacing inconsistent manual processes with intelligent dual-side heating and automated conveyor control, the customer achieved zero-defect quality, quadrupled throughput, and strengthened their position as a trusted supplier to global electronics brands.
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