Corona International Corporation

Kabushiki Kaisha Sebun Shiizu

Takashi Yamaguchi

Masao Yamaguchi

Minobu Yamaguchi

Yasuo Yamaguchi

Akiko Uematsu

The present invention is to provide a process for producing a composite of an aluminum material and a synthetic resin molding that can be produced at a high efficiency and to provide a stable and fast composite that is large in a peel strength and a mechanical strength. The process for producing a composite according to the present invention is characterized in that an aluminum raw material is oxidized in an electrolytic bath of phosphoric acid or sodium hydride, thereby an anodic oxidation coating provided with innumerable poreshaving a diameter of 25 nm or more made open in the surface thereof is formed thereon, and a synthetic resin moldis coupled with the anodic oxidation coatingin such a condition that the partthereof is intruded in the innumerable pores.

Process for producing composite of aluminum material and synthetic resin molding

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 () is anodized in electrolytic bath of phosphoric acid or sodium hydroxide to thereby form anodic oxidation coating () provided with innumerable pores () having a diameter of 25 nm or more made open in the surface thereof is formed thereon, and a synthetic resin mold () is coupled with the anodic oxidation coating () in such a condition that the portion () of the synthetic resin molding () is intruded or anchored in the innumerable pores () of the anodic oxidation coating (). By this process, composite (P) with the above properties can be easily obtained.

Composite of aluminum material and synthetic resin molding and process for producing the same

A hard enclosing container which is transparent at least at its front wall, has a metallic plate bearing indicia contained therein. An enclosing layer of a viscous adhesive agent is stuck to all surfaces of the plate and fills the container. The layer includes at least a front covering layer which is transparent. To form the article, the plate is adhered to a bottom wall of the container by a lower covering layer of the adhesive agent or by a pressure sensitive adhesive double coated sheet. Viscous adhesive agent is charged to the container. The container is then sealed by a transparent hard top cover. Alternatively, the container with the plate stuck therein can be closed by the transparent hard top cover and the adhesive agent is then charged into the sealed container expelling any air trapped therein. The sealed container can be evacuated prior to charging.

Growing community of inventors

Fujisawa, Japan

Takashi Yamaguchi