As electronic assemblies become denser and more complex, particularly in automotive electronics, new energy, and telecommunications, the demand for dual-sided surface protection has skyrocketed. However, struggling with limited floor space or managing the logistical nightmare of complex double-sided coating processes is a common pain point for modern manufacturers. To address this, Sanco has engineered an advanced inline conformal coating line that delivers maximum flexibility, total traceability, and high efficiency within a highly compact footprint.
The Challenge of Traditional Double-Sided Coating
Historically, achieving a double-sided conformal coating meant one of two things: either investing in an extraordinarily long production line with two separate coating machines and two massive curing ovens, or relying on labor-intensive manual flipping between batches. The first option consumes valuable factory real estate and doubles capital expenditure, while the second introduces human error, contamination risks, and breaks the continuous flow required for modern MES (Manufacturing Execution System) tracking.
Core Highlights: The Sanco Compact Architecture
Our solution redefines factory layouts by utilizing vertical space and intelligent routing:
- True Versatility: Effortlessly handles both Single-Sided & Double-Sided PCBA coating without requiring mechanical reconfigurations between standard batches.
- Space-Saving Design: Our innovative “Single-Machine, Single-Oven” layout drastically reduces your production line length. By routing the PCB back through the same curing tunnel via a lower conveyor return, it maintains exceptional throughput while saving up to 40% in floor space.
- Zero Manual Handling: Eliminates operator touch-points with fully automated lifting and 180° flipping mechanisms, drastically reducing defect rates caused by ESD or contamination.
Intelligent Automated Workflow in Detail
The efficiency of this system relies on the seamless integration of our core coating equipment and smart peripherals. Here is how the automated double-sided process flows:
Side A Processing:
The cycle begins with a Magazine Loader automatically feeding the boards onto the Transportband.
After Barcode Scanning logs the entry into the MES, the board enters the Three-Axial Coating Machine (or Four-Axial for complex 3D components).
Using high-precision applicators like the Filmspuitventiel, the first side is coated.
It then travels through an inline UV-uithardende oven or IR droogoven.
Upon exiting, an Lift lowers the board to the bottom return conveyor.
Side B Processing:
The bottom conveyor routes the board back to the start of the line.
Here, a PCB Flipper smoothly rotates the board 180°.
The barcode is scanned again to confirm Side B orientation. The board passes through the coating machine and curing oven for the second time.
Finally, the completed dual-sided board is safely stacked by the Losinstallatie.
Equipment Configuration Guide
To build a highly efficient inline system, selecting the right mix of machines, valves, and peripherals is crucial. Below is a reference configuration for our automated lines:
| Categorie | Recommended Sanco Equipment | Role in the Production Line |
|---|---|---|
| Core Coating |
• Three-Axial Coating Machine • Four-Axial Coating Machine |
Provides precise, selective conformal coating. 4-Axis is ideal for deep, multi-angled component clusters. |
| Precision Valves |
• Filmspuitventiel • Precisie slagklep |
Ensures sharp edge definitions, high-speed application, and prevents overspray onto keep-out zones. |
| Curing Systems |
• UV LED droogoven • IR droogoven |
Rapidly cures the coating material. Selected based on whether you utilize UV-curable or solvent/moisture-cure chemistries. |
| Board Handling |
• PCB Flipper & Lift • Magazine Loader / Losinstallatie |
The backbone of the compact design; automatically manages board flow, flipping, and safe accumulation without manual intervention. |
On-Site Installation Case: Success in India
We recently partnered with a leading electronics manufacturer in India to upgrade their surface protection capabilities. Facing increasing product demand but constrained by their existing factory layout, they needed a solution that could handle complex double-sided PCBA curing without expanding their floor plan.
By implementing our “Single-Machine, Single-Oven” automated line equipped with dual barcode scanning stages, the client achieved full traceability for their MES integration. The automated lifting and 180° flipping mechanisms ensured zero manual handling, drastically reducing their defect rates. We successfully completed the installation and commissioning on-site, providing comprehensive training to their engineering team. The result was a highly cost-effective leap in their production capabilities.
Explore Our Full Range of Automation Solutions
Beyond conformal coating, Sanco provides a comprehensive ecosystem of fluid dispensing and automation technology to build your smart factory:
