Tailored foam tapes are fabricated and formulated to suit specific applications. Take the window manufacturing industry as a key example of this approach. The glass is tough to hold because it’s polished and glossy. The panel is also expected to hold back the elements, including the strongest winds and coldest rain. That tacky foam tape, inserted between the window and its supporting frame, must perform in a like manner.
Packing an Insulating Punch
Building on the strength exhibited by the window pane, the adhesive foam tape perimeter provides a substantial insulating feature. The glazing tape acts as a threshold, one that’s present on the window outside and the room interior, so it’s obviously designed to keep the cold air out and the warm air inside. Then, thanks to a closed cell structure and that viscoelastic build, the material elastically conforms to every irregular surface.
The All-Material Solution
On thinking about this application for a moment, those irregular surfaces aren’t likely to be found on the glossy glazing panel. No, it’s the window sash that features an occasional bulge or surface depression. The surface defects are invisible to the naked eye, and they can barely be felt by a sensitive finger, but they’re there, creating thin gaps. Again, the viscoelastic material adapts. It compresses and expands ever so slightly when these surface irregularities produce a gapping effect. Furthermore, the tacky substance on the foam tape quickly adheres to any and all popular window sash types, including wood, aluminium, and vinyl.
Dealing with Environmental Stresses
It’s not only the penetration of rainwater that troubles a window seal, it’s also the dynamic loading effects that accompany the running water. A window bulges and expands, then it contracts. The temperature outside is dropping, but it’s rising inside as the room occupants experience an early chill. Flexible by design, the foam adjusts to accommodate the thermal action. Finally, even the sun is a hazard for window foam tapes. Ultraviolet radiation prematurely ages lesser products until they crack. Superior polymer bases are immune to UV attacks.
From an installation point of view, glazing foam tape adheres via a pressure sensitive activation system. If the tacky strip is pulled off, then no sticky residue is left behind. The fitting phase concludes when the conformable plastic base fills every corner and every uneven surface, with the material eliminating all potential air and water gaps. Now, with the window manufacturing work concluded, the foamy ribbon handles weather and temperature extremes while maintaining its structural features, even when the harshest UV rays beat down.