Hot Products
VacStar Technology
VacStar has developed the VacStar series, its flagship vacuum glass solution, engineered to meet building façade structural requirements and diverse market needs. VacStar combines an 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 a one step process where the edge seal is completed in a vacuum chamber, avoiding a vacuum suction hole on the 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
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Outstanding Thermal Insulation
U-values as low as 0.4 W/(m²·K)
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Slim Design
2 to 12.2mm thickness range, enabling easy integration
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Jumbo Size Capability
Max size 2400 × 4000mm
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Acoustic Comfort
Significant noise reduction for urban environments
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Durability & Reliability
Rigorously tested for long-term performance under varying climates
Applications of Vacuum Glass
VacStar is versatile across residential, commercial, and heritage projects. It is particularly valuable for:
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New Builds
High-performance façades and curtain walls.
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Glazing Retrofits
Upgrading existing windows without altering façade structure or architectural aesthetics.
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Luxury Retail & Hospitality
Enhancing comfort while preserving design transparency.
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Green Buildings
Meeting stringent sustainability certifications. Certified Platinum Green Product by HK Green Building Council.
Frequently Asked Questions
Q
What is VacStar vacuum glass and how does it differ from ordinary double glazing?
VacStar vacuum glass consists of two glass panes separated by a near-perfect vacuum layer instead of a gas-filled gap used in conventional double or triple glazing. This vacuum eliminates convective and conductive heat transfer, achieving U-values as low as 0.4 W/(m²·K) — far superior to standard insulated glass units — while maintaining a much slimmer profile of just 2 to 12.2mm.
Q
Is VacStar vacuum glass safe? Is it fully tempered?
Yes. VacStar uses a low-temperature soft metal edge seal processed below 250 °C, which means the glass panes do not need to be re-annealed after tempering. As a result, VacStar can be produced using fully tempered glass, meeting the highest safety standards for building façades and structural glazing applications.
Q
How long does VacStar vacuum glass last?
VacStar is engineered for a service life of more than 25 years. The dense metal edge seal provides low gas permeability, while the built-in needle-shape getter continuously absorbs residual gas molecules to maintain a stable vacuum environment throughout the product's lifetime — with no maintenance, re-sealing, or re-vacuuming required.
Q
Can VacStar vacuum glass be used in retrofit projects?
Absolutely. VacStar's slim profile (as thin as 2mm) and narrow edge design make it an ideal solution for glazing retrofits. It can replace existing window panes without requiring changes to the façade structure or frame dimensions, making it especially suitable for heritage buildings and luxury commercial properties where aesthetics must be preserved.
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What are the acoustic benefits of VacStar vacuum glass?
VacStar provides significant noise reduction compared to conventional glazing, making it highly effective in urban environments. The vacuum layer eliminates airborne sound transmission pathways, while the ceramic micro-supporting pillars — which have superior acoustic insulation properties over metal alternatives — further reduce noise transfer between the glass panes.
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Is VacStar vacuum glass certified for green building standards?
Yes. VacStar has been certified as a Platinum Green Product by the Hong Kong Green Building Council. Its outstanding thermal insulation performance (U-values as low as 0.4 W/(m²·K)) significantly reduces building energy consumption, helping projects meet stringent sustainability certifications across residential, commercial, and public building sectors.