Process for producing composite of aluminum material and synthetic resin molding

A process producing a composite of an aluminum material and a synthetic resin molding characterized in that it comprises (a) an aluminum raw material in an electrolytic bath of phosphoric acid or sodium hydroxide is soaked, and then surface(s) thereof is/are subjected to an anodic oxidization treatment by a direct current electrolysis to form an anodic oxidation coating comprising innumerable pores having a diameter of 25 nm or more made open innumerably in the surface(s) thereof and (b) a portion or whole of the aluminum material with the anodic oxidation coating is then placed in a cavity in a predetermined shape in a metal mold, and molten synthetic resin is injected toward the partially or wholly exposed surface of the anodic oxidation coating in the cavity so that the molten synthetic resin may be invaded into the innumerable pores having a diameter of 25 nm or more innumerably made open in the surface and also may be filled in the cavity under pressure to be molded.

(canceled)

(canceled)

A process for producing a composite comprising the steps:

• (a) applying anodic oxidization treatment to both side surfaces of a plate-shaped aluminum raw material by a phosphoric acid or sodium hydroxide bath to form an anodic oxidation coatings each comprising innumerable pores having a diameter of 25 nm or more innumerably made open in the each surface, (b) then forming a print coating on one side surface of both the anodic oxidation coatings of the anodic oxidization treated aluminum material, (c) then bending the same into second dimensions or third dimensions by press working, and (d) then placing the a portion or whole of the worked aluminum material with the anodic oxidation coatings in a cavity having a predetermined shape made in a metal mold, and injecting molten synthetic resin toward the exposed part or whole surface of the anodic oxidation coating in the cavity, so that part of the molten synthetic resin is invaded into the innumerable pores open in the surface of the anodic oxidation coating and also is filled in the cavity under pressure to be molded.

A process for producing a composite comprising the steps:

• (a) forming a printed surface on one side surface of a plate-shaped aluminum raw material, (b) then bending the same into two dimensions or three dimensions by press working, (c) then applying an anodic oxidization treatment to the unprinted other side surface of the worked aluminum raw material by an electrolysis by a phosphoric acid or sodium hydroxide bath, so that an anodic oxidation coating composed of innumerable pores having a diameter of 25 nm or more made open in the surface is formed, and (d) then placing the part or whole of the worked aluminum material with the anodic oxidation coatings in a predetermined shaped cavity of a metal mold, and injecting molten synthetic resin toward the exposed part or whole surface of the anodic oxidation coating in the cavity, so that part of the molten synthetic resin is invaded into the innumerable pores open in the surface of the anodic oxidation coating and also is filled in the cavity under pressure to be molded.

A process for producing a composite comprising the steps:

• (a) forming a printed surface one side surface of a plate-shaped aluminum raw material, (b) then applying an anodic oxidization treatment to the unprinted other side surface of the worked aluminum raw material by an electrolysis by a phosphoric acid or sodium hydroxide bath, so that an anodic oxidation coating composed of innumerable pores having 25 nm or more in diameter made open in the surface is formed, (c) then bending the same into two dimensions or three dimensions by press working, (d) then placing the part or whole of the worked aluminum material with the anodic oxidation coatings in a predetermined shaped cavity of a metal mold, and injecting molten synthetic resin toward the exposed part or whole of the anodic oxidation coating in the cavity, so that part of the molten synthetic resin is invaded into the innumerable pores open in the surface of the anodic oxidation coating and also is filled in the cavity under pressure to be molded.

A process for producing a composite characterized by using a metal mold for injection molding provided with a heating apparatus surrounding a vertical passage connecting to a sprue in the metal mold for injection molding and a gate connecting to the lower end of the vertical.

(canceled)

A process for producing a composite comprising the steps:

• (a) forming an aluminum raw material into a tubular one by an extruder, (b) then applying an anodizing treatment to the tubular aluminum raw material so that innumerable pores having a diameter of 25 nm or more made open in the surface thereof may be formed, and (c) then jointing a tubular-formed synthetic resin molding having a desired thickness under pressure with the circumferential surface and along the length direction of the anodic oxidation coating of the tubular aluminum material by a co-extruding molding machine, so that a composite in which the tubular aluminum material and the tubular synthetic resin molding are laminated integrally.

(canceled)