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Aluminum Spacer for Insulating Glass
Many people focus on windows and doors, only concerned with glass thickness, frame style, and sealant quality, but few pay attention to the thin frame hidden between the two panes of glass in insulated glass – the aluminum alloy spacer. It may not seem like a large, conspicuous component, but it truly determines the lifespan of the insulated glass and is a crucial foundation for sound insulation, fogging prevention, and thermal insulation.
Features
Renqiu City Xinjian Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of aluminum spacer for insulating glass in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale customized aluminum spacer for insulating glass from our factory. Also, free sample is available.
Many people focus on windows and doors, only concerned with glass thickness, frame style, and sealant quality, but few pay attention to the thin frame hidden between the two panes of glass in insulated glass – the aluminum alloy spacer. It may not seem like a large, conspicuous component, but it truly determines the lifespan of the insulated glass and is a crucial foundation for sound insulation, fogging prevention, and thermal insulation. It can be said that the stable performance of most residential and commercial windows and doors relies heavily on this unassuming core component.
Currently, the mainstream spacer on the market is primarily made of 6063 aluminum alloy, offering excellent versatility. The biggest advantage of this material is its stability, corrosion resistance, and resistance to deformation, making it suitable for most home and commercial applications.
Aluminum spacers for insulated glass are available in various thicknesses from 0.20mm to 0.35mm, with the 0.25mm option offering the best value and being the most widely used specification. It is also available in bendable and straight-strip splicing versions. The bendable version offers better overall sealing, while the splicing version provides greater construction flexibility, meeting diverse processing needs.
Key Performance and Functions
Excellent Physical Support:
As the "skeleton" of the insulated glass, the aluminum spacer can withstand changes in atmospheric pressure, ensuring the two panes of glass maintain a uniform distance, preventing inward collapse and guaranteeing the long-term stability of the insulated glass.
Highly Effective Moisture-Proof Sealing:
The aluminum spacer is hollow and filled with molecular sieves (desiccant). Its surface has uniform openings and good straightness, ensuring the hygroscopic activity of the molecular sieves and effectively absorbing residual moisture within the insulating layer, preventing fogging and condensation on the inside of the glass.
Good Chemical Compatibility:
The specially surface-treated aluminum spacer has excellent adhesion to various sealants such as butyl rubber and polysulfide sealant, creating a robust sealing barrier. Simultaneously, it has no negative impact on the internal desiccant.
Precise Dimensions:
To ensure compressive strength, the single-sided wall thickness of high-quality aluminum spacers is typically strictly controlled between 0.25mm and 0.4mm. A wide variety of widths are available on the market (ranging from 4mm to 27mm), and customization is possible to meet the specific needs of different national markets for window and door profiles.
While pure aluminum conducts heat relatively quickly, a qualified aluminum spacer, combined with a hollow layer, can still effectively block direct heat exchange. Simultaneously, it can stabilize the vibration frequency of the glass, effectively attenuating noise when used with glass of varying thicknesses. It's worth noting that to address the issue of metal thermal conductivity, the industry is continuously upgrading, introducing "warm-edge spacers" (such as stainless steel composites and thermoplastic materials), further reducing heat conduction at the edges, making windows less prone to condensation in cold weather, and further enhancing insulation performance.
As a new type of environmentally friendly building material, aluminum alloy spacers are widely used in building doors and windows, glass curtain walls, automobiles, and aircraft. In exported products, the quality of the spacer directly affects the thermal insulation performance (K-value/U-value performance) of the entire glass pane and its safety during long-distance international transport.
With the increasing global demands for building energy efficiency, in addition to traditional aluminum alloy spacers, the industry has also developed "warm-edge spacers" (such as stainless steel composite or thermoplastic materials) with lower thermal conductivity. However, aluminum alloy spacers, due to their extremely high hardness, strong support capacity, and excellent cost-effectiveness, remain the most widely used and technologically mature support material for insulated glass in the global market.
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