VacStar Vacuum Glass

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 vacuumfor decades.
• Consistent thermal performance – Prevents degradation of insulation values over time.
• Maintenance-free operation – No need for re-sealing or re-vacuuming.

• Outstanding thermal insulation– U-values as low as 0.4 W/(m²·K).
• Slim design– 2 to 12.2mm thickness range, enabling easy integration.
• Jumbo size capability –max size 2400x4000mm
• Acoustic comfort– Significant noise reduction for urban environments.
• Durability & reliability– Rigorously tested for long-term performance under varying climates.

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. Certified Platinum Green Product by HK Green Building Council.