Smart Film Installation: Technical Guidelines for Voltage Connection and Surface Preparation
Proper electrical connection and surface preparation are critical for the long-term reliability and visual uniformity of your smart film. To assist professional installers, we have standardized the smart film wiring process. These procedures must be strictly followed to prevent contamination, uneven adhesion, or material corrosion during the installation phase.
Surface Preparation & Precautions
Before applying any conductive materials, the film must be precisely prepared and cleaned. This ensures the conductive components sit flush and securely.
- Port Cutting: An electrode blade is used to directly cut a wiring port on each side of the smart film where wiring is required. It is suggested that when cutting the wiring port, you first tear off a little of the protective film on both sides and fix it in place to expose the wiring port for easy cutting.
- PDLC Layer Cleaning: Use a scouring pad to wipe off the PDLC coating with water until it becomes transparent, and then use a warm air blower to dry the water.
- Solvent Warning: Be careful not to wipe with alcohol to avoid corroding the smart film.
- Contamination Prevention: Use adhesive tape to horizontally stick the edge of the tangent port. This will prevent subsequent application of the silver paste conductive layer beyond the wiring port, which may contaminate the smart film.
Standard Smart Film Wiring Process
The entire sequence involves 7 precise technical processes. Follow this protocol exactly for every panel installed.
| Process Step | Action Required | Critical Installation Notes |
|---|---|---|
| 1: Port Cutting | An electrode blade is used to directly cut a wiring port on each side of the smart film where wiring is required. | The smart film is not divided into positive and negative electrodes. First tear off a little of the protective film on both sides to expose the wiring port for easy cutting. |
| 2: Clean PDLC Layer | Use a scouring pad to wipe off the PDLC coating with water until it becomes transparent, and then use a warm air blower to dry the water. | Be careful not to wipe with alcohol to avoid corroding the smart film. |
| 3: Masking | Use adhesive tape to horizontally stick the edge of the tangent port. | Prevent subsequent application of silver paste conductive layer beyond the wiring port, which may contaminate the smart film. |
| 4: Silver Paste Application | Using a small cotton swab or other material, lightly touch the conductive silver paste and evenly apply it to the two cut wiring ports. | After drying with a warm air blower, remove the adhesive tape. |
| 5: Apply Copper Foil | Apply copper foil and stick a suitable length of copper foil according to the length of the wiring port. | The copper foil has two widths of 4MM and 9MM. Select 9MM for the self-adhesive surface and 4MM for the exposed surface to avoid uneven sticking. |
| 6: Weld Electrode Wire | After the copper foil is pasted, melt the welding wire with electric chromium iron, leave the solder solution, and then solder the wire. | Two wiring ports can be soldered onto the same port to avoid situations such as detachment or wire breakage during installation. |
| 7: Final Testing | Run system test on the installed configuration. | Test to ensure that the smart film can operate normally. |
Frequently Asked Questions
Can I use alcohol to clean the PDLC layer prior to wiring?
No, you must be careful not to wipe with alcohol to avoid corroding the smart film. Instead, use a scouring pad to wipe off the PDLC coating with water until it becomes transparent, and then use a warm air blower to dry the water.
How do I determine which is the positive and negative electrode?
The smart film is not divided into positive and negative electrodes. You can use an electrode blade to directly cut a wiring port on each side of the smart film where wiring is required.
Which copper foil width goes on which side?
The copper foil has two widths of 4MM and 9MM. The self-adhesive surface of the smart film is selected as 9MM, and the exposed surface is selected as 4MM to avoid subsequent welding points on the self-adhesive surface causing uneven adhesion.
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