In industrial production, bonding plays an increasingly important role. Researchers have now succeeded in separating the processes of applying the adhesive and the actual joining, which opens up a new world of applications. Adhesive bonding technology is an effective and inexpensive means of seamlessly joining two parts, even two made of different materials. Especially in lightweight construction, adhesive bonding is the preferred technique because many of the materials used can hardly be joined otherwise. However, since liquid adhesives need time to cure, they cannot be applied in every production step. In hopes of finding a way to eliminate the need for regularly applying liquid adhesive while joining fasteners, the automotive supplier STANLEY Engineered Fastening – Tucker GmbH in Gießen turned to the researchers at the Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM in Bremen. Their solution was a two-step process in which adhesive is initially deposited on one of the parts and then dried to form a non-sticky layer. During a subsequent production step, the adhesive is hardened and the two parts are bonded together. Although two-step bonding techniques aren’t new – early postage stamps were coated with an adhesive that would only stick to envelopes once moistened
The post Adhesive bonding with pre-applied adhesives has been published on Technology Org.
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