As the use of multi-materials, which combine materials with different properties in the right places, progresses, dissimilar material joining, which firmly attaches two different materials without using fastening elements such as screws or adhesives, has been attracting attention in recent years.　In particular, technology that joins resin and metal (resin-metal joining technology) can not only make products smaller and lighter, but also contribute to reducing the number of parts, reducing environmental impact, and shortening the manufacturing process. Various research and developments have been carried out.
Filler-reinforced crystalline resins are generally used as resins for resin-metal joining, and amorphous resins such as polycarbonate resins have been considered disadvantageous for joining.
We have successfully developed a metal-resin joining member with strong bonding properties by combining Daicel Miraizu Ltd.'s dissimilar metal material joining technology "DLAMP^®" with Teijin's developed metal joining polycarbonate resin. This resin exhibits strong bondability despite being non-reinforced.