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
🌡️ Outstanding Thermal Insulation
U-values as low as 0.4 W/(m²·K).
📐 Slim Design
2 to 12.2 mm thickness range, enabling easy integration.
📏 Jumbo Size Capability
Max size 2400 × 4000 mm.
🔇 Acoustic Comfort
Significant noise reduction for urban environments.
🛡️ 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:
🏗️ New Builds
High-performance façades and curtain walls.
🪟 Glazing Retrofits
Upgrading existing windows without altering façade structure or architectural aesthetics.
🏨 Luxury Retail & Hospitality
Enhancing comfort while preserving design transparency.
🌿 Green Buildings
Meeting stringent sustainability certifications. Platinum Green Product by HK Green Building Council.
Frequently Asked Questions
1 What makes VacStar vacuum glass different from traditional double-glazed units?
VacStar uses an ultra-thin vacuum layer instead of a gas-filled cavity, which eliminates convective and conductive heat transfer. Combined with its low-temperature metal edge seal and ceramic micro-supporting pillars, VacStar achieves U-values as low as 0.4 W/(m²·K) — far superior to standard double or triple glazing.
2 Does VacStar vacuum glass require any special maintenance?
No. VacStar is designed for maintenance-free operation. The needle-shape getter technology continuously absorbs residual gas molecules inside the vacuum cavity, ensuring stable long-term performance without the need for re-sealing or re-vacuuming throughout its 25+ year service life.
3 Can VacStar vacuum glass be used for retrofit projects?
Yes. VacStar's slim profile (as thin as 2 mm) and narrow edge seal make it ideal for glazing retrofits. It can replace existing window units without requiring alterations to the façade structure or affecting the building's architectural appearance.
4 Is VacStar vacuum glass safe? Is tempered glass retained after the manufacturing process?
Absolutely. VacStar's low-temperature metal edge seal process operates below 250 °C, which means no re-annealing of the tempered glass panes is required. The glass retains its full temper, ensuring maximum structural safety and impact resistance.
5 What 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 expansive window systems.
6 Is VacStar vacuum glass certified for green building standards?
Yes. VacStar has been awarded the Platinum Green Product certification by the Hong Kong Green Building Council, confirming its suitability for projects targeting stringent sustainability certifications such as BEAM Plus, LEED, and other international green building standards.