Coated Polyester Film For Lamination to Ethylene-Vinyl Acetate Layers
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
May 21, 2010
filing date -
May 22, 2009
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Abandoned
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Abstract
A bonding material is described that is well suited to bonding polymer films, such as polyester films, to other substrates. In one embodiment, for instance, the bonding material can be used to bond a polyester film to a layer containing an ethylene-vinyl acetate copolymer to form a backing material for a photovoltaic device. The bonding material generally comprises a block copolymer combined with a coupling agent. The block copolymer generally contains a polyester segment in combination with a different polymer segment. The different polymer segment may comprise, for instance, polyethylene glycol polymer blocks. The coupling agent, on the other hand, can comprise a functional silane. The polyester segments on the block copolymer attach to the polyester film, while the silane coupling agent reacts with the second polymer blocks and reacts with a constitutent in an adjacent layer.
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