| abstract |
<Task> In electronic devices, home appliances, etc., it is important to make the good of a metal case compatible with the good of a synthetic resin structure, to have high productivity, mass productivity, and to freely design a shape and a structure. In addition, the present invention is not limited to electronic devices and home appliances, but is required to help increase the light weight and strength of various parts and structures. [Solution] The aluminum alloy-based material is immersed in an erosive aqueous solution to form a surface covered with an ultrafine recess, or anodized to form a metal oxide layer covered with an opening of an ultrafine hole. The resin side is prepared by using a polyamide resin compounded with an impact modifier, a mixture of aliphatic polyamides and aromatic polyamides, or a mixture of aromatic polyamides. An aluminum alloy-based article is inserted into an injection molding die, and a polyamide-based resin composition is injected into the surface thereof to form an integrated composite. |