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:
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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.
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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.
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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.
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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.
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Frequently Asked Questions
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What makes VacStar vacuum glass different from traditional double-glazed units?
VacStar vacuum glass replaces the air or gas gap in conventional double glazing with an ultra-thin vacuum layer. This delivers far superior thermal insulation — with U-values as low as 0.4 W/(m²·K) — while maintaining a much slimmer profile (from just 2mm thick), making it ideal for both new builds and retrofit projects.
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Is VacStar vacuum glass safe? Does the metal edge seal affect the temper of the glass?
Yes. VacStar uses a low-temperature soft metal edge seal processed below 250°C, which means the glass does not need to be re-annealed after tempering. The result is fully tempered vacuum glass that meets the highest safety standards for building façades and curtain walls.
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How long does VacStar vacuum glass last?
VacStar is engineered for a service life of more than 25 years. Its dense metal edge seal minimizes gas permeability, and the integrated needle-shape getter technology continuously maintains the vacuum environment — ensuring consistent thermal and acoustic performance throughout its lifetime with no maintenance required.
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Can VacStar vacuum glass be used to upgrade existing windows without changing the window frame?
Absolutely. One of VacStar's key advantages is its slim profile — available from 2mm to 12.2mm in thickness — which makes it an excellent solution for glazing retrofits. It can replace existing glass panes without altering the façade structure or architectural appearance, minimizing disruption and cost.
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What is the maximum size available for VacStar vacuum glass panels?
VacStar supports jumbo-size production up to 2400 x 4000mm, making it suitable for large-scale commercial façades, curtain wall systems, and architectural glazing projects that require oversized glass panels.
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Is VacStar vacuum glass certified for green building projects?
Yes. VacStar has been certified as a Platinum Green Product by the HK Green Building Council, recognizing its outstanding contribution to energy efficiency and sustainability. It is well suited for projects targeting green building certifications such as LEED, BEAM Plus, and other sustainability standards.