Channel: Ig equipment
Edgetech: IG glass with flexible spacers in architectural applications

2013-06-06 | Ig equipment

In this article, we are presented with some important aspects to be considered when manufacturing IG units. The information comes from one of the leading global companies in the manufacture of spacers – Edgetech – who gives us the main reasons why we need to use flexible spacers, especially with regards to thermally bent glass in architectural applications.

Edgetech's lexible silicone rubber spacers Super Spacer®
Insulating glass with flexible spacer systems in architectural applications is becoming a more popular choice for architects and specifiers. Key benefits of using flexible silicone rubber spacers such as Super Spacer® include the opportunity to assemble larger and heavier glass sizes, offer additional bonding to the barrier or primary seal, and follow glass contours more easily compared with rigid spacer bars. This ability to easily manufacture larger units with higher precision using robotic application is especially popular for triple IGU manufacture. Add to this higher energy efficiency and the ability to produce shaped IGUs, and you can see why there has been such a surge in IGUs manufactured using flexible rubber foam spacers. And I place the emphasis on the words rubber and foam. While thermoplastic extruded spacers are classed as flexible too, rubber foam spacers have a whole host of extra benefits when it comes to automated production.

Traditional insulating glass edge seals
Traditionally constructed IGUs consist of two or more glass panes and one or more rectangular hollow spacer tubes bent to fit the final insulating glass unit, then filled with desiccant and applied with poly-isobutylene sealant (also named primary sealant, PIB) on the sides of the spacer bar. This is then applied to the glass by positioning one sheet of glass on an IG assembly line before being conveyed to the platen press where it is then coupled with the other glass sheet. The glass cavity is ...


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Article taken from Glass-Technology International bi-monthly magazine (6 issues per year)
Year: 2012 number: 6
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