The use of polyester as flexible printed circuit board substrates implies that alternative low temperature curing conductive materials are required for assembling electronic circuits. In addition, conductive adhesives are used as a solution which eliminates the environmental problems encountered with solder materials. The combination of polymer thick film (PTF) technology on polyester films and the use of isotropic conductive adhesives as joining material provide a cost effective and environmentally friendly manufacturing method. Polymer materials comply with recycling concepts.
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