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 x 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
What makes VacStar's metal edge seal superior to traditional vacuum glazing seals?
VacStar uses a low-temperature soft metal edge seal processed below 250°C, which eliminates the need for re-annealing tempered glass. This results in a fully tempered vacuum glass with a service life exceeding 25 years, superior gas impermeability, and a slim edge profile suited for both new builds and retrofit projects.
What is the benefit of VacStar's one-step process for vacuum sealing?
The one-step process completes both the edge seal and vacuum creation inside a single vacuum chamber, eliminating the need for a vacuum suction hole on the glass surface. This improves production efficiency, mechanical strength, and delivers a cleaner aesthetic with no visible seal marks on the glass.
Why does VacStar use ceramic micro-supporting pillars instead of metal ones?
Ceramic pillars, applied via advanced 3D printing and baked during tempering, provide more precise placement and a seamless bond compared to metal alternatives. They also offer better thermal and acoustic insulation, reducing heat bridges and improving overall energy efficiency in architectural applications.
How does the needle-shape getter technology maintain vacuum performance over time?
The needle-shape getter is a specialized material embedded within the vacuum cavity that continuously absorbs residual gas molecules. This maintains an extra-high vacuum level for decades, preventing insulation value degradation and eliminating the need for any maintenance, re-sealing, or re-vacuuming over the product's lifetime.
What U-value and size range does VacStar vacuum glass achieve?
VacStar vacuum glass achieves U-values as low as 0.4 W/(m²·K), placing it among the best-performing glazing solutions available. It is available in thicknesses ranging from 2mm to 12.2mm and can be manufactured in jumbo sizes up to 2400 x 4000mm to accommodate large-scale façade and curtain wall projects.
Is VacStar vacuum glass suitable for green building certifications?
Yes. VacStar vacuum glass has been certified as a Platinum Green Product by the Hong Kong Green Building Council. Its exceptional thermal insulation, slim profile, and long-term durability make it ideal for projects pursuing LEED, BEAM Plus, and other stringent sustainability certifications across residential, commercial, and heritage building types.