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Dec 5, 2006 12:00 AM
PUR is a hot melt adhesive similar to EVA hot melts, but the adhesive is manufactured with polyurethene reactive material (PUR). As the adhesive product dries a natural chemical reaction occurs after the glue is exposed to moisture in the air. The results of the chemical reaction creates a superior bond within the fibers of the paper giving the product a greater pull and flex strength.