Static structures (e.g. – buildings) – Bridger strip hiding juncture of panels – Panels attached to substructure arrangement
Reexamination Certificate
2000-04-07
2001-09-25
Safavi, Michael (Department: 3635)
Static structures (e.g., buildings)
Bridger strip hiding juncture of panels
Panels attached to substructure arrangement
C052S309100, C052S469000, C428S058000, C428S316600
Reexamination Certificate
active
06293069
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a closure system to seal the joints between the abutting side edges of insulating foam panels used in wall and roof construction, especially in metal buildings.
2. Description of the Prior Art
Prefabricated foam panels are widely used to form an insulating envelope for insulating building walls and roofs. The overall insulating efficiency of the array of foam panels of the wall or roof system is influenced by the nature of the closure and seal arrangement used at the junction of the panels.
Currently, there are a variety of joint closures, including tapes, PVC strips, caulks and other sealants. These closures are installed at the job site, where care must be taken to ensure proper performance. The PVC strips are recommended, but they are relatively expensive and accordingly are replaced frequently by the less expensive tapes or sealants. Unfortunately, application of the latter closures is time consuming and difficult.
Furthermore, besides their expensiveness, the PVC strips usually recommended have other serious shortcomings. Their dimensional stability is relatively poor. In service in metal buildings, the PVC strips tend to twist and deform due to roof top temperatures, creating uninsulated areas where condensation can form and drop from the ceiling. It is also necessary to have a separate PVC profile for each insulation board thickness. Additionally, the PVC profiles are only 10′ long, requiring cutting the length to fit the span between wall girts and ceiling purlins, resulting in inefficient, expensive use. More often than not, the PVC profiles do not adequately match-up to the board thickness, resulting in either a very tight, stressed fit or a very loose fit. Also, a sealant that must be field applied is also required to permanently attach the PVC strip and prevent air infiltration through the strip and insulation board interface.
OBJECTS OF THE INVENTION
It is therefore an object of the present invention to provide an improved closure and seal for the joint between the abutting edges of foam panels used in building construction.
It is also an object of the present invention to provide a seal which can be applied easily and inexpensively to the abutting edges of foam panels.
It is another object of the present invention to provide a seal which can be applied to a prefabricated foam panel before its installation at a job site.
SUMMARY OF THE INVENTION
The foregoing and other objects of the invention have been achieved by a closure strip which is adapted for installation over the joint between the adjoining edges of insulating foam panels of a wall or roof assembly. The strip is suitably sized to cover the joint and the neighboring portion of each foam panel forming the joint. An adhesive is provided to bond the strip to the panels. Bonding is readily obtainable by means of a pressure sensitive adhesive placed on the backside of the strip. The strip may be made of a wide variety of materials, including plastics, metals, coated papers, paperboard, and combinations thereof. In a preferred embodiment, the strip comprises a flexible material. Suitable flexible materials include open and closed cell foams.
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Barry Leon F.
Cole William J.
Hagan Joseph R.
Monda Perry F.
Celotex Corporation
Safavi Michael
Vanecek Charles W.
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