INSULATING GLASS COMPONENTS: Air Spacer Systems
Aluminum and Corner Key Choices
Warm Edge
Reasons for Preferring Induction Back Welding on IG Spacer Bar
- Preferred for use world wide (only notable exception is the US the result of domestic suppliers have highly promoted Laser weld).
- Specifically designed for use on automated production lines such as Forel, Lendardt, Lisec and SIMEC and with all manner of spacer benders.
- Used on more automated lines world wide because of better bend-ability and product consistency.
- Aesthetically cleaner visible surface with uniform double perforations and decorative lines to brake up the uniform visible surface
- Continuous solid weld that is stronger than laser weld, as a result of the weld penetrating the full thickness of the spacer wall.
- The induction weld can be verified as solid by “eddy current” testing to assure completeness of the weld.
- Eddy current testing is the same test used to test the weld seam on aircraft skins.
- No unsightly or rough aluminum buildup on weld line.
- More secure key fit with double perforation and since key teeth are on the inside it is easier on hand assembly operators’ fingers.
- Assured and consistent perforations for breath-ability and moisture pick up by the desiccant.
- Less chance of desiccant leakage, especially small bead.
- Better for muntin hole punching – less deformation or splitting.
- Typically more roll former passes for a better-defined shape.
- Adhesion testing on all commercially available sealants verified.
- Mill finish spacer cleaned for excellent adhesion properties (used through out the world as the standard for IG production).
- Available in either Mill, Anodized or Painted finish.
- Available in 6.5 (1/4”), 7 (11/32”) or 8 (5/16”) MM heights and all popular widths.
- Straight connectors (from Krönenberg) pre-inserted when requested.
- Either ink jet or etched imprint available and more clearly visible on the spacer.