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Old 07-15-2009, 09:19 PM   #9 (permalink)
Bicycle Bob
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Well, "Coroplast Classic' is polypropylene, but there's no reason not to extrude almost any thermoplastic through the same sort of die. I've seen polycarbonate in thick panels for greenhouse use, for instance. Fresh from the factory, the regular signmaker's grade has a "Corona Discharge" treatment to help ink adhesion. I've gotten the very common WEST epoxy to stick, but not very well.
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