Hot Products
VacStar Technology
VacStar has developed VacStar series, its flagship vacuum glass solution, engineered to meet building façade structural requirement and diverse market needs. VacStar combines ultra-thin vacuum layer with high precision micro-supporting pillars and advanced edge-sealing technology. Key technologies include:
Metal Edge Seal
Unlike traditional vacuum glazing that relies on glass‑to‑glass sealing, VacStar employs a low‑temperature soft metal edge seal. This ensures:
- Low processing temperature (< 250 °C) – No re‑annealing of tempered glass panes is required, ensuring fully tempered vacuum glass for maximum safety.
- Superior durability – Dense structure with lower gas permeability, delivering a service life of more than 25 years.
- Resilient strength – High shear, tensile, and compressive resistance, enabling the structure to withstand even the most extreme climate conditions.
- Enhanced reliability – Prevents micro‑leaks that can compromise vacuum performance.
- Slim aesthetics – Allows for a narrow edge profile, ideal for retrofit projects where appearance matters.
One Step Process Eliminates Vacuum Seal on Glass Surface
VacStar adopts one step process where the edge seal is completed in vacuum chamber that avoids vacuum suction hole on glass surface. Benefits include:
- High Production efficiency – Skip time consuming vacuum suction process by completing edge seal and vacuum in one process.
- Higher Durability – Eliminating stress points that often lead to cracks or seal failure.
- Improved mechanical strength – Glass panes retain their natural resilience.
- Cleaner design – Seamless integration into frames without visible seal marks.
High Precision Micro-Supporting Pillars
VacStar leverages advanced ceramic pillar technology to deliver superior performance in vacuum glass applications.
- Precision & Stability – Ceramic supporting pillars are applied using advanced 3D printing technology and baked onto the glass during tempering, ensuring exact placement, a seamless bond, and a consistently stable vacuum gap.
- Efficiency & Reliability – The integrated process streamlines production, eliminates defects such as shifting or missing pillars, and enhances overall manufacturing efficiency compared to metal alternatives.
- Superior Insulation – Ceramic pillars provide better thermal and acoustic insulation than metal pillars, ensuring best energy efficiency and comfort in architectural applications.
Needle-Shape Getter Technology
VacStar incorporates a needle-shape getter, a specialized material that continuously absorbs residual gas molecules inside the vacuum cavity. This innovation delivers:
- Stable vacuum environment – Maintains extra-high vacuum for decades.
- Consistent thermal performance – Prevents degradation of insulation values over time.
- Maintenance-free operation – No need for re-sealing or re-vacuuming.
Excellent Performance
Outstanding Thermal Insulation
U-values as low as 0.4 W/(m²·K), delivering exceptional energy efficiency.
Slim Design
2 to 12.2 mm thickness range, enabling easy integration into existing systems.
Jumbo Size Capability
Maximum size 2400 × 4000 mm for large-scale architectural applications.
Acoustic Comfort
Significant noise reduction for urban environments, enhancing occupant well-being.
Durability & Reliability
Rigorously tested for long-term performance under varying climates worldwide.
Applications of Vacuum Glass
VacStar is versatile across residential, commercial, and heritage projects. It is particularly valuable for:
🏗️ New Builds
High-performance façades and curtain walls for modern construction projects.
🔄 Glazing Retrofits
Upgrading existing windows without altering façade structure or architectural aesthetics.
🏨 Luxury Retail & Hospitality
Enhancing comfort while preserving design transparency in premium spaces.
🌿 Green Buildings
Meeting stringent sustainability certifications. Certified Platinum Green Product by HK Green Building Council.
Frequently Asked Questions
QWhat makes VacStar vacuum glass different from traditional double-glazed units?
VacStar vacuum glass replaces the air or gas-filled cavity of traditional IGUs with an ultra-high vacuum layer, achieving U-values as low as 0.4 W/(m²·K) — far superior to standard double or even triple glazing. Its slim 2–12.2 mm profile also makes it ideal for retrofit projects where space is limited.
QIs VacStar vacuum glass safe? Can it be fully tempered?
Yes. VacStar uses a low-temperature metal edge seal process (<250°C), which means tempered glass panes do not require re-annealing during production. This ensures the final product is fully tempered, meeting the highest safety standards for building façade and glazing applications.
QHow long is the service life of VacStar vacuum glass?
VacStar is engineered for a service life of more than 25 years. The dense metal edge seal, combined with needle-shape getter technology that continuously absorbs residual gas molecules, ensures the vacuum integrity is maintained for decades without any need for re-sealing or maintenance.
QCan VacStar vacuum glass be used for window retrofits in existing buildings?
Absolutely. VacStar's slim profile (as thin as 2 mm) and narrow edge seal allow it to fit directly into most existing window frames without any structural modifications. This makes it an ideal upgrade solution for improving energy efficiency and acoustic comfort in heritage, residential, and commercial properties.
QWhat is the maximum size available for VacStar vacuum glass panels?
VacStar supports jumbo-size panels up to 2400 × 4000 mm, making it suitable for large-scale architectural applications including high-rise curtain walls, commercial façades, and oversized window installations.
QIs VacStar vacuum glass certified for green building projects?
Yes. VacStar has been certified as a Platinum Green Product by the Hong Kong Green Building Council, confirming its compliance with the most stringent sustainability and environmental performance standards. It is well-suited for projects targeting LEED, BEAM Plus, and other leading green building certifications.