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The Development History of UV Vacuum Plating
Release time:
2026-05-20 17:25
UV vacuum plating is a composite surface‑treatment process that combines ultraviolet‑curing technology with conventional vacuum coating. Its development rests on the long‑term evolution of vacuum‑coating techniques and has also benefited from the continuous advancement of UV‑curable materials. From the early stages of vacuum‑coating technology, through the maturation of UV‑curing processes, to the integrated application of both, UV vacuum plating has undergone a complete journey—from laboratory research to large‑scale industrial production.
I. The Foundations of Vacuum Coating Technology Have Been Laid
Research on vacuum coating technology began in the early 20th century. Researchers first explored the fundamental methods of evaporating metallic materials under vacuum conditions and depositing them onto substrate surfaces to form thin films. With advances in vacuum‑generation technologies, vacuum coating was gradually adopted in industrial production, marking the start of its industrialization.
In subsequent stages of development, the emergence of physical vapor deposition marked a significant turning point. Researchers combined vacuum evaporation with glow discharge, laying the theoretical groundwork for the advancement of ion plating technology. The advent of ion plating ushered vacuum coating from simple evaporative deposition into the era of plasma‑assisted deposition.
Subsequently, magnetron sputtering technology advanced rapidly. In sputter coating, ions generated by a glow discharge bombard the target material, causing its atoms to be ejected and deposited onto the substrate, thereby forming a dense thin film. This technique has been widely adopted due to the compactness and strong adhesion of the deposited layers. By this point, vacuum coating had evolved into three major technological platforms—evaporation coating, sputter coating, and ion plating—laying the process foundation for the later emergence of UV vacuum electroplating.
II. The Maturity of UV Curing Technology
Research on UV-curing technology has advanced almost in parallel with vacuum coating. At the heart of UV-curable coatings is the photoinitiator, which decomposes under ultraviolet irradiation to generate free radicals, initiating the polymerization of resins and monomers and enabling the coating to transition from a liquid to a solid state within seconds.
Early UV-curing technology was primarily used for surface coating of substrates such as wood and paper. As photoinitiators and resin systems have been continuously optimized, the performance of UV coatings has steadily improved, and their range of applicable substrates has gradually expanded. Compared with conventional thermally cured coatings, UV curing offers advantages such as rapid curing, low energy consumption, and the absence of solvent emissions—characteristics that make it an ideal choice when combined with vacuum deposition.
III. Formation of UV Vacuum Plating
The emergence of UV‑cured vacuum plating is the result of both market demand and technological advancement. Conventional vacuum coating typically relies on thermal curing during the film‑hardening stage, which suffers from high energy consumption and low efficiency. Meanwhile, traditional electroplating processes involve heavy‑metal pollutants, leading to mounting environmental pressures.
Introducing UV‑curable coatings into the vacuum coating process has proven to be an effective solution to these challenges. UV‑cured vacuum plating employs a three‑layer structure—primer, coating, and topcoat: the primer seals surface defects in the substrate and enhances adhesion; the coating layer achieves a metallic luster through vacuum deposition; and the topcoat protects the metal coating while delivering decorative effects. This process retains the metallic aesthetic of vacuum plating while leveraging the efficiency and environmental benefits of UV curing.
IV. Expansion of Industrial Applications
As the technology has matured, UV vacuum plating has been scaled up for industrial production, with its applications steadily expanding. In the cosmetics packaging sector, products such as perfume caps, lipstick tubes, and compact cases achieve a metallic finish through UV vacuum plating. In the automotive components industry, this process is employed for headlight reflectors and interior trim parts, meeting both high‑temperature resistance and aesthetic requirements. In the consumer electronics field, mobile phone housings and keypads gain a metallic appearance and enhanced wear resistance via UV vacuum plating.
The advent of non-conductive vacuum coating technology has further expanded the application scope of UV vacuum plating. This process enables the deposition of metal‑like, non‑conductive thin films on plastic‑based components without compromising RF signal transmission, leading to widespread adoption in areas such as smartphones and wearable devices.
V. Current Development Trends
Currently, UV vacuum plating technology is evolving along several key directions. In terms of low-temperature processing, to meet the demands of high-tech industries such as semiconductors and displays, operating temperatures continue to be reduced. From an environmental perspective, as a clean production process, UV vacuum plating is accelerating its replacement of conventional electroplating in response to increasingly stringent environmental regulations. Functionally, UV vacuum plating is expanding beyond purely decorative applications to encompass optical, electronic, and other functional uses.
VI. Conclusion
The evolution of UV vacuum plating exemplifies the fundamental pathway by which technological convergence drives process innovation. Vacuum coating technology lays the groundwork for achieving metallic‑like surface effects, while UV curing provides an efficient and environmentally friendly means of applying protective coatings. The synergy between these two technologies has given rise to UV vacuum plating, a pivotal manufacturing process. From early laboratory research through the maturation of industrial production to the ongoing expansion of its application domains, UV vacuum plating has become one of the key technologies in the surface‑treatment industry. As new materials and processes continue to emerge, UV vacuum plating will keep advancing, offering high‑efficiency, eco‑friendly surface‑treatment solutions to an ever‑broader range of industries.
Disclaimer: The above content has been compiled from publicly available sources and is provided for reference only. If any infringement occurs, please contact us, and we will address it promptly.
| Bosheng’s Recommended Products – Vacuum Plating |
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| Primer |
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| Product Model/English Abbreviation |
Product Name/Product Type |
Product Features |
| B-113 |
Bisphenol A epoxy acrylate |
High hardness, high gloss, high fullness, containing 20% TPGDA. |
| B-151 |
Modified epoxy acrylate |
Low halogen, yellowing-resistant, excellent plating performance, and strong adhesion. |
| B-160D |
Modified epoxy acrylate |
Good flexibility, yellowing resistance, and excellent adhesion. |
| B-163 |
Modified epoxy acrylate |
Good flexibility, excellent pigment wetting, and strong adhesion. |
| B-165 |
Modified epoxy acrylate |
Good flexibility and strong adhesion |
| B-212A |
Aromatic polyurethane acrylate |
High cost-performance, excellent plating adhesion, good toughness, and resistant to boiling water. |
| B-221 |
Aliphatic polyurethane acrylate |
Fast curing, resistant to boiling water |
| B-268M |
Aliphatic polyurethane acrylate |
Good flexibility, excellent adhesion, superior plating performance, and strong hiding power. |
| B-574C |
Polyester acrylate |
Low viscosity, low odor, excellent wettability, suitable for LED UV. |
| B-619W |
Aliphatic polyurethane acrylate |
Fast curing, high hardness, excellent toughness, wear resistance, and chemical resistance. |
| Intermediate coat |
||
| Product Model/English Abbreviation |
Product Name/Product Type |
Product Features |
| B-374 |
Aliphatic polyurethane acrylate |
Excellent flexibility, good leveling, resistant to abrasion and chemicals, and resistant to yellowing. |
| B-601 |
Aromatic polyurethane acrylate |
High hardness, scratch resistance, chemical resistance, and excellent cost-effectiveness. |
| B-6020 |
Special functional group acrylate |
Resistant to boiling water, excellent color development, and strong interlayer adhesion. |
| Topcoat |
||
| Product Model/English Abbreviation |
Product Name/Product Type |
Product Features |
| B-221 |
Aliphatic polyurethane acrylate |
Fast curing, resistant to boiling water |
| B-301 |
Aromatic polyurethane acrylate |
Fast curing, excellent toughness, and good sandability. |
| B-302 |
Aromatic polyurethane acrylate |
Fast curing, high strength, excellent toughness, and good grindability. |
| B-368 |
Aliphatic polyurethane acrylate |
Good toughness, excellent leveling, excellent bend resistance, and excellent heat resistance. |
| B-374 |
Aliphatic polyurethane acrylate |
Excellent flexibility, good leveling, resistant to abrasion and chemicals, and resistant to yellowing. |
| B-574C |
Polyester acrylate |
Low viscosity, low odor, excellent wettability, suitable for LED UV. |
| B-601 |
Aromatic polyurethane acrylate |
High hardness, scratch resistance, chemical resistance, and excellent cost-effectiveness. |
| B-6016C |
Special functional group acrylate |
Easy to apply, resistant to yellowing and boiling water, and improves the appearance of the paint film. |
| B-6019 |
Special functional group acrylate |
Good leveling, excellent wetting, resistant to boiling water, and superior color dispersion. |
| B-609 |
Aliphatic polyurethane acrylate |
Fast curing, high hardness, scratch resistance, and chemical resistance. |
| B-615A |
Aliphatic polyurethane acrylate |
Fast curing, excellent toughness, wear resistance, and chemical resistance. |
| B-619W |
Aliphatic polyurethane acrylate |
Fast curing, high hardness, excellent toughness, wear resistance, and chemical resistance. |
| B-6210 |
Aliphatic polyurethane acrylate |
Low viscosity, chemical resistance, environmental resistance, and dual photothermal curing. |
| B-6211 |
Aliphatic polyurethane acrylate |
Fast curing, high hardness, scratch-resistant, and free of organotin. |
| B-919B |
Aliphatic polyurethane acrylate |
Fast curing, high hardness, excellent toughness, and superior chemical and wear resistance. |
| Monomer Recommendation |
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| Product Model/English Abbreviation |
Product Name/Product Type |
Product Features |
| BM2223 (TPGDA) |
Di(propylene glycol) diacrylate |
Good flexibility and low volatility |
| BM3231 (TMPTA) |
Trimethylolpropane triacrylate |
High crosslink density, high hardness, high gloss, and excellent wear resistance. |
| BM3235 (PET3A) |
Pentaerythritol triacrylate |
Fast curing, high crosslink density, high hardness, and chemical resistance. |
| BM3380 (3EO-TMPTA) |
Pentaerythritol triacrylate |
More flexible and less irritating than TMPTA. |
| BM6261 (DPHA-80) |
Dipentaerythritol hexaacrylate |
High crosslink density, high hardness, chemical and wear resistance, and water resistance. |
| BM6263 (DPHA-90) |
Dipentaerythritol hexaacrylate |
High crosslink density, high hardness, chemical and wear resistance, and water resistance. |
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