Assembly in Action: Dispenser Puts Panel Manufacturer on the Cutting Edge
Busener started researching adhesives that would offer better heat and cold resistance, and a stronger bond to nonporous substrates than the industry-standard ethylenevinyl acetate. He found that polyurethanes offer heat and cold resistance at 150 to -40 C.
However, the same chemical properties that make polyurethane a good choice for strength and performance also pose challenges during material processing and application. Busener had difficulty finding an adhesive dispenser because of the adhesive's premature curing, charring and maintenance problems. He turned to Nordson Corp. (Westlake, OH), which supplied the company with an adjustable, closed, extrusion slot-nozzle system.