Hot Products
VacStar Technology
VacStar has developed 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.
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
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 2400 x 4000mm
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:
🏗️ 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
Frequently Asked Questions
What is VacStar vacuum glass and how does it differ from traditional double glazing?
VacStar vacuum glass features an ultra-thin vacuum layer between two glass panes, sealed with a low-temperature soft metal edge seal. Unlike traditional double glazing that uses an air or gas-filled cavity, the vacuum layer in VacStar eliminates gas conduction, achieving U-values as low as 0.4 W/(m²·K) — significantly outperforming conventional insulated glass units.
Is VacStar vacuum glass safe for use in buildings that require tempered glass?
Yes. VacStar's metal edge seal is processed at a low temperature below 250 °C, which means the tempered glass panes do not require re-annealing during manufacturing. This ensures that the final product retains full tempering strength, making it safe for building façade and structural glazing applications.
How long is the expected service life of VacStar vacuum glass?
VacStar vacuum glass is engineered for a service life of more than 25 years. Its dense metal edge seal structure, needle-shape getter technology, and precision ceramic micro-supporting pillars all work together to maintain vacuum integrity and thermal performance over decades without requiring re-sealing or re-vacuuming.
Can VacStar vacuum glass be used for retrofitting existing windows?
Absolutely. VacStar's slim profile — ranging from just 2mm to 12.2mm in total thickness — makes it ideal for glazing retrofit projects. It can upgrade the thermal and acoustic performance of existing windows without requiring changes to the façade structure or compromising the building's architectural aesthetics.
What makes VacStar's ceramic micro-supporting pillars superior to metal alternatives?
VacStar uses ceramic pillars applied via advanced 3D printing technology and baked onto the glass during tempering. Ceramic offers better thermal and acoustic insulation than metal, reduces the risk of thermal bridging, and ensures precise and stable placement. This integrated process also eliminates common defects such as shifting or missing pillars during production.
Is VacStar vacuum glass certified for green building projects?
Yes. VacStar vacuum glass has been certified as a Platinum Green Product by the Hong Kong Green Building Council. Its exceptional thermal insulation performance, with U-values as low as 0.4 W/(m²·K), makes it an ideal solution for projects seeking to achieve stringent green building certifications and energy efficiency standards.