Adhesives are finding their way into automotive repair shops - slowly but surely. Lord Chemical Products Pty. Ltd. Weld-bonding has been crash-tested as this photo from Lord Corp. shows, and proven to be an effective alternative to MIG welding for some body panel repairs. Structural adhesives from Lord Corp. are being applied at the body-in-white stage to this metal panel. These adhesives can also be applied to plastic panels. Metal and plastic bonding with adhesives, as shown in this photo from Lord Corp., is on the rise for automotive and truck repair. The unfamiliar and seemingly unpredictable behavior of adhesives has kept many of them out of automotive design, manufacturing, and repair. It's far easier for engineers to design joints using welds or mechanical fasteners that offer more exact, more predictable, and better understood performance. However, new vehicle designs using lighter gauge metals, coated steels, plastics, and nonferrous metals, are creating a need for new assembly methods. New aerodynamic structures have, in some cases, made it hard to use traditional spot-welding techniques. As a result, more and more adhesives are being recruited to do the joining. Until recently, the needs of the repair industry seemed to be an afterthought for automotive companies. They provided minimal information to the aftermarket on methods of repairing new vehicles. Part of the problem is that most adhesives used by OEMs have no place in the body shop. For instance, structural, or load-bearing, adhesives are usually applied at the body-in-white stage when metal panels are fresh from the presses and covered in forming oil, and plastic panels are still covered in mold-release chemicals. To cure, they require temperatures as high as 130°C. Not only do aftermarket paint-bake ovens fall short of that mark, few car interiors would survive such high-temperature bake cycles. For OEM designers, structural
Products & Services
Adhesive tapes are used to assemble materials or parts together using a sticky chemical bond.
Rubber Adhesives and Sealants
Rubber adhesives and sealants are highly flexible, natural or synthetic materials that are used to join components or fill gaps between seams or on surfaces.
Foam Bonding Tapes
Foam bonding tapes are specialized tapes designed for adhesive joining of foam materials.
Double Sided and Transfer Tapes
Double sided tapes are coated with adhesive on both sides of the backing or carrier. Transfer tapes consist of a thin adhesive film without a carrier or backing.
Polymer and Plastic Composites
Polymer and plastic composites are strengthened with fibers, fillers, particulates, powders and other matrix reinforcements to provide improved strength and/or stiffness. Examples include fiber reinforced plastics (FRPs), sheet molding compounds (SMCs), bulk molding compounds (BMCs), pre-preg materials, and fabricated composite parts.
Topics of Interest
Companies with roots and expertise in traditional welding operations are increasingly ready to give "glue" a try. Industrial Assembly and Components Lord Corp. Scelzi Enterprises Inc.,...
Recent advances in adhesive chemistries bring new possibilities for automotive structural joints. Comparison of the Betamate toughened epoxy (bottom) to a brittle adhesive (top) and to spot welds...
An adhesive can be defined as a substance that is capable of holding materials together by surface attachment. Surfaces on which an adhesive is applied are known as adherends, while the process of...
The latest structural adhesives replace rivets, bolts, welding, and other traditional fastening methods. Edited by Jean M. Hoffman You will probably never live to see the day when cars and trucks are...
Bernd R. Burchardt Peter W. Merz
Bernd Burchardt completed his graduation in chemistry as Dr. rer. nat. in 1979 at the Albert-Ludwigs University of Freiburg. From 1979 to 1994, he...