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:
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 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.
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 – HK Green Building Council
🏅 Certified Platinum Green Product – HK Green Building Council
Frequently Asked Questions
Q
What makes VacStar's metal edge seal different from traditional vacuum glazing?
VacStar uses a low-temperature soft metal edge seal processed below 250 °C, which eliminates the need for re-annealing tempered glass. This preserves the full tempering of the glass for maximum safety, while also delivering superior durability with a service life exceeding 25 years and a slim aesthetic profile ideal for retrofits.
Q
How does the one-step process benefit vacuum glass production?
The one-step process completes both edge sealing and vacuuming inside the vacuum chamber simultaneously, eliminating the need for a separate vacuum suction hole on the glass surface. This improves production efficiency, eliminates stress points prone to cracking, retains the glass's mechanical strength, and results in a cleaner frameless appearance.
Q
Why does VacStar use ceramic micro-supporting pillars instead of metal ones?
Ceramic pillars offer superior thermal and acoustic insulation compared to metal alternatives. Applied via advanced 3D printing technology and baked onto the glass during tempering, they ensure precise placement, a stable vacuum gap, and eliminate production defects such as shifting or missing pillars — enhancing both performance and manufacturing reliability.
Q
What is the U-value of VacStar vacuum glass, and how does it compare to standard double glazing?
VacStar vacuum glass achieves U-values as low as 0.4 W/(m²·K), which is significantly better than standard double-glazed units typically ranging from 1.1 to 2.8 W/(m²·K). This outstanding thermal insulation dramatically reduces heat transfer, lowering energy consumption and improving indoor comfort.
Q
Is VacStar vacuum glass suitable for retrofit projects?
Yes. With a thickness range of just 2 to 12.2mm and a slim edge profile, VacStar is specifically designed for glazing retrofits. It can replace existing glass units without requiring changes to the existing window frames or façade structure, making it ideal for upgrading older buildings while maintaining their original architectural aesthetics.
Q
How does the needle-shape getter technology maintain long-term vacuum performance?
The needle-shape getter is a specialized material embedded within the vacuum cavity that continuously absorbs residual gas molecules over the product's lifetime. This maintains an extra-high vacuum level for decades, prevents degradation of insulation values, and ensures the product operates maintenance-free without any need for re-sealing or re-vacuuming.