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 vacuum suction holes 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:
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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.
🏨
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
1
What makes VacStar vacuum glass different from traditional double-glazed units?
Unlike traditional double-glazed units that rely on air or gas-filled gaps, VacStar uses an ultra-thin vacuum layer combined with high-precision ceramic micro-supporting pillars and a low-temperature metal edge seal. This results in significantly better thermal insulation (U-values as low as 0.4 W/m²·K), a much slimmer profile (as thin as 2 mm), and superior acoustic performance — all without compromising structural integrity or safety.
2
Is VacStar vacuum glass safe? Does it use tempered glass?
Yes. VacStar's proprietary metal edge seal process operates at temperatures below 250 °C, which means no re-annealing of the tempered glass panes is required during manufacturing. As a result, VacStar delivers fully tempered vacuum glass that meets the highest safety standards for building facades and glazing applications.
3
How long does VacStar vacuum glass last, and does it require maintenance?
VacStar vacuum glass is engineered for a service life of more than 25 years. The built-in needle-shape getter technology continuously absorbs residual gas molecules inside the vacuum cavity, maintaining a stable vacuum environment over decades. This means the product is entirely maintenance-free — no re-sealing or re-vacuuming is ever required.
4
Can VacStar vacuum glass be used in retrofit window projects?
Absolutely. One of VacStar's key strengths is its slim profile (starting from just 2 mm thick), which allows it to be installed into existing window frames without requiring structural modifications or changes to the building's architectural aesthetics. It is an ideal upgrade solution for residential, commercial, and heritage buildings looking to improve energy efficiency without a full window replacement.
5
What certifications does VacStar vacuum glass hold?
VacStar has been recognized as a Certified Platinum Green Product by the Hong Kong Green Building Council, making it suitable for projects targeting top-tier green building certifications. The product is rigorously tested for long-term performance under varying climate conditions, supporting compliance with international energy efficiency and sustainability standards.
6
What is the maximum available size for VacStar vacuum glass panels?
VacStar supports jumbo-size glass panels up to 2400 × 4000 mm, making it suitable for large-scale commercial façades, curtain wall systems, and architectural glazing projects. The thickness range spans from 2 mm to 12.2 mm, offering flexibility for both standard and high-specification applications.