Aluminum-plastic composite structure

摘要

An aluminum-plastic composite structure includes an aluminum portion and a plastic portion. The aluminum portion defines a plurality of micro grooves by ultraviolet lithography. The plastic portion is integrally formed on the aluminum portion and substantially filling in the micro grooves. A width of each micro groove is in a range from 0.02 millimeters to 0.05 millimeters. A depth of each micro groove is in a range from 0.2 millimeters to 0.25 millimeters.