Technoform Advances Thermal Barrier Bonding
Technoform Adhesion Prime improves thermal barrier bonding for high-performance fenestration

Technoform has introduced Adhesion Prime, a technology designed to improve adhesion between silicone sealants and polyamide (PA) thermal barriers used in aluminum-framed windows, doors, curtain walls and other fenestration and façade systems.
By modifying the surface of the PA thermal barrier, Adhesion Prime enhances adhesive performance while maintaining the thermal efficiency of the assembly. Improved thermal performance can also contribute to better condensation resistance, enhanced acoustics and greater occupant comfort near the building envelope.
Designed to save fenestration manufacturers time, labor and costs, Adhesion Prime allows glass or metal to be bonded directly to PA without the need for chemical primers or additional processing steps. The simplified assembly process can reduce the number of frame components, lower material costs and decrease the overall weight of the finished system.
"Adhesion Prime ensures a secure base for bonding virtually any type of material with glue or silicone," said Bill Blazek of Technoform. "It allows manufacturers to bond glass or metal directly to PA without the use of fasteners, which can be difficult to handle and often reduce thermal performance."
The technology supports high-performance building envelopes by creating a durable bond between silicone adhesive and the PA thermal barrier surface. According to Technoform, the bond meets the structural requirements of ASTM C1401, Standard Guide for Structural Glazing Sealants. Structural sealant glazing (SSG) systems provide structural support and attachment for glazing and other components in windows, curtain walls and similar framing systems.
Adhesion Prime works by creating a layer of aluminum oxide (alumina) particles embedded within the PA surface. This forms a durable alumina interlayer between the polymer and the sealant, creating what Technoform describes as a "micro-aluminum profile" bonded to the PA surface. Because the aluminum oxide layer is non-continuous, it does not compromise the thermal performance of the polymer barrier, allowing the PA to remain fully recyclable.
For more information, visit Technoform's Adhesion Prime webpage. Attendees of GlassBuild America, Sept. 23-25 at the Las Vegas Convention Center, can also learn more by visiting Technoform in Booth #2215.
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