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Glass Electroplating/Painting Technology and Process
Glass itself is an electrical insulator and cannot be electroplated directly using conventional plating methods. To enable metal deposition, the glass surface must first undergo a conductive pretreatment process, followed by the application of metallic coatings. The most commonly used technologies include vacuum coating (the industry standard), electroless plating, and electroplating. These processes are widely applied for decorative finishes, reflective surfaces, electrical conductivity, thermal insulation, and anti-glare performance.
Dust-free glass screen printing - precision 0.2mm
- The minimum line thickness and blank gap should not be less than 0.2mm
- Screen printing is the most basic processing technology, and the electroplating process also requires the use of screen printing technology, but precision or color overprinting requires the skill of a master
- Color grading, please provide Pantone color code or sample, we can produce pure colors
- Screen printing should be carried out under dust-free conditions, and dust/lint should not be sealed under ink
- Do not leave fingerprints on the glass during QC inspection and screen printing by the master operator
- Conductive silk screen printing
- Semi transparent silk screen printing
- Medical grade silk screen printing
Glass Electroplating
Glass itself is non-conductive and cannot be directly electroplated. It needs to undergo conductive pre-treatment before depositing a metal coating. Common processes include vacuum electroplating (mainstream), chemical plating, and electroplating, mainly used for decoration, reflection, conductivity, insulation, and anti glare.
Core principle
Glass is an insulator, which first forms a conductive bottom layer (nickel, copper, silver, etc.) on the surface, and then electroplated with metals/alloys such as gold, chromium, titanium, aluminum, indium tin oxide, etc., to achieve mirror like, colored, conductive, and hydrophobic effects.
Comparison of Main Glass Plating Technologies
1. Vacuum electroplating (most commonly used, preferred for glass)
Method: Magnetron sputtering, vapor deposition, ion plating
Coating: Aluminum, Titanium, Chromium, Silver ITO、 Titanium nitride, etc
Advantages: Strong adhesion, uniform, environmentally friendly, no wastewater, can be used as a colored/transparent conductive film
Usage: Mobile phone cover, car rearview mirror, architectural coated glass, decorative glass, AR/AF anti fingerprint film
2. Chemical plating (electroless plating, wet method)
Glass surface sensitization → activation → chemical silver/copper/nickel plating, without the need for electricity, forms a conductive layer, which can be further thickened by electroplating.
Usage: Mirrors, conductive glass, low reflective glass, handicrafts
3. Water electroplating (rarely used directly)
Chemical plating must be applied first, followed by hanging plating/rolling plating. There is a lot of wastewater and poor adhesion, and glass parts are rarely used.
Glass electroplating complete process (standard wet method)
- Pre treatment: degreasing → water washing → roughening (hydrofluoric acid micro etching to improve adhesion) → neutralization
- Sensitization: Soaking in stannous chloride, adsorbing tin ions
- Activation: Silver/palladium nitrate salt, forming metal crystal nuclei
- Chemical plating: silver/copper/nickel to form a conductive layer
- Electroplating thickening: chrome plating, gold, nickel, titanium, etc
- Closed protection: clear varnish/silica sealing layer, anti-oxidation and wear-resistant
