Showa Denko has developed an innovative technology to directly join/bond aluminum alloys and polycarbonate resin—a commodity amorphous engineering plastic—without using an adhesive.In recent years, much attention is focused on new technologies that directly join/bond resin materials—at the time of injection molding—to metallic materials.SDK has enabled such direct joining/bonding based on its expertise in aluminum alloys and polymer chemistry gained over many years. Specifically, SDK has developed an innovative joining/bonding technology based on special surface treatment and primer treatment for aluminum alloys, realizing chemical bonding power Note 1 in addition to the anchor effect.As this technology enables direct joining/bonding of commodity polycarbonate resin and lightweight aluminum, it is applicable to the housing of smartphones. SDK will continue development work to optimize its aluminum-surface-treatment technology and primer-coating conditions, thereby increasing bond strength and durability. In the future, SDK will aim to use the technology in the area of super-engineering plastics with higher heat resistance for automotive parts applications.In its medium-term business plan “The TOP 2021,” SDK is promoting cooperation among various business segments and strengthening marketing functions.
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