3M, Detroit, launched 3M Acrylic Plus Tape Series EX4500 for primerless application of trim components for global automakers and supplier customers. The series allows for robust adhesion to medium surface energy (MSE) substrates and is compatible with a variety of paints without the need for an adhesion promoter or other surface pre-treatment methods—making it well suited for automotive manufacturers concerned with the cost, quality, worker health and environmental issues caused by primer.
The EX4500 series offers primerless adhesion to MSE plastics such as acrylic, acrylonitrile butadiene styrene (ABS), acrylonitrile ethylene styrene (AES), acrylonitrile styrene acrylate (ASA), polycarbonate (PC) and PC+ABS, while also ensuring compatibility with a variety of paints, including paints composed of carbamate, epoxy / acid powder and 2K urethane. This makes the tape ideal for use with pillar garnishes, MSE body-side moldings, step plates, vent visors and chrome appliques.
The deep black color of the EX4500 tapes help to conceal bondlines to ensure an aesthetically pleasing and streamlined appearance, while fewer steps in the adhesion process can lead to faster tack times, which can help to increase capacity and reduce unit cost.
