Instant pre-fixation of adhesive bonded insert parts which is preferably made of plastic with the help of chemical screws

Abstract

The present application is directed at a an assembly comprising a substrate 1, a substrate 2 and heat curable adhesive, which is positioned between the substrates 1 and 2, wherein the heat curable adhesive is cured only in a portion of less than 50% of the entire surface covered by the heat curable adhesive. In this manner, the cured parts of the adhesive serve as 'chemical screws' which sufficiently fix the substrates together during further processing steps, but do not involve complete curing of the adhesive. Thus, it is possible to use heating steps in the downstream processing of the Substrate 1/adhesive/substrate 2 assembly to fully cure the adhesive, while the substrate 2 is sufficiently fixed to the substrate 1, so that dislocation of the substrate 2 during the downstream processingis prevented. The present application also provides processes for the preparation of such an assembly as well as the use of the processes in the manufacture of vehicles.

Description

technical field [0001] The present application relates to an assembly comprising a substrate 1, a substrate 2 and a heat curable adhesive disposed between the substrates 1 and 2, wherein the heat curable adhesive is only present on less than 50% of the entire surface covered by the heat curable adhesive. % part of the curing. Partial curing of the adhesive ensures that the substrate is securely held in place during further processing steps following this fixation, while the adhesive can be finally cured or fully cured at a later stage. The present application further relates to several methods for producing corresponding assemblies and the use of these methods in vehicle construction. Background technique [0002] In the field of automobile or vehicle construction, it is conventional that many parts, such as profiles, have cavities which are filled with plastic components to provide reinforcement. These plastic components are usually fixed on the metal profile via adhesive...

AI Technical Summary

Problems solved by technology

However, this technique has the same disadvantages as discussed above because the welds on materials such as ultra-high-strength steel or boron steel used due to their good behavior in crash events locally alter the structure of the steel and produce the local weakness in

In addition, this solution has the disadvantage of requiring additional components, which must be produced and assembled on plastic parts

Finally, the bracket itself represents additional production costs, making the process less commercially viable

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