Loading patent…
AssigneeCorona International Corporation
InventorsTakashi Yamaguchi, Minobu Yamaguchi, Akiko Uematsu, Masao Yamaguchi, Yasuo Yamaguchi
Estimating the term…
A process for producing a composite of aluminum material and synthetic resin molding with high efficiency; and a stable fast composite exhibiting high peeling resistance and large mechanical strength. The process is characterized in that aluminum material (1) is anodized in electrolytic bath of phosphoric acid or sodium hydroxide to thereby form anodic oxidation coating (2) provided with innumerable pores (3) having a diameter of 25 nm or more made open in the surface thereof is formed thereon, and a synthetic resin mold (6) is coupled with the anodic oxidation coating (2) in such a condition that the portion (6a) of the synthetic resin molding (6) is intruded or anchored in the innumerable pores (3) of the anodic oxidation coating (2). By this process, composite (P) with the above properties can be easily obtained.
A composite of a worked aluminum material and a synthetic resin molding, selected from the group consisting of polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), ABS and PPS and polyacetal (POM), so constructed that the synthetic resin molding is coupled with an anodic oxidation coating comprising innumerable pores having a diameter of from between 25 nm to about 90 nm and a depth from between about 1 μm to about 1.5 μm on the surface of the worked aluminum material, such that the synthetic resin molding is intruded in the innumerable pores thereof and bonded together over a part or the whole surfaces thereof as to have a vertical tensile strength from between 20 Kgf/cm^2 to 45 Kgf/cm^2.
A composite produced by a process for producing a composite wherein a phosphoric acid or sodium hydroxide anodic treated anodic oxidation coating formed on at least one surface of a worked aluminum material in a shape of a plate or bent into two dimensions or three dimensions by press working, is placed in a jig containing a heating apparatus in such a manner that the anodic oxidation coating may be directed upwards, and a synthetic resin molding, selected from the group consisting of polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), ABS, PPS and polyacetal (POM), in a desired shape is placed on the anodic oxidation coating and is pressed from above, and a contact portion of the synthetic resin mold with the anodic oxidation coating surface is molten by the heating apparatus under a condition that it is being contacted with the surface of the anodic oxidation coating under pressure, so that the molten resin is invaded into the innumerable pores having a diameter of from between 25 nm to about 90 nm and a depth from between about 1 μm to about 1.5 μ, and in this state, an a vertical tensile strength from between 20 Kgf/cm^2 to 45 Kgf/cm^2.
A composite produced by a process comprising the steps:
Dependencies are inferred from the claim text.