Photovoltaic heat-weldable thermoplastic roofing membrane
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United States of America Patent
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app pub date -
Apr 10, 2009
filing date -
Apr 11, 2008
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Abandoned
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Abstract
Disclosed herein is the fusing of photovoltaic modules or cells to a heat-weldable thermoplastic roofing membrane, and related methods of manufacturing of the same. The resulting membrane may be used as the back sheet for sealing the back surface of photovoltaic cells/modules. In one embodiment, such a photovoltaic roofing structure may comprise a photovoltaic module with an active layer and electrodes, a transparent superstrate, and a thermoplastic olefin membrane. The transparent superstrate may be positioned on top of the photovoltaic module. Also included may be an underlying membrane comprising heat-weldable thermoplastic material positioned beneath the photovoltaic module. In addition, a frame comprised of the same heat-weldable thermoplastic material as the underlying membrane may be located on a perimeter of the superstrate and the photovoltaic module. The frame is then heat-welded to the underlying membrane around the perimeter of the photovoltaic module. Also disclosed herein are related methods of manufacturing such a photovoltaic roofing structure.
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