Mitsui Chemicals, Inc.

Goro Inoue

Hiroshi Okumura

Masaki Misumi

Kazuki Kimura

Takeharu Isaki

Yuki Kondo

Kiminori Uchida

Shunsaku Kubota

Haruka Takamatsu

A metal/resin composite structure () of the invention is formed by bonding a metal member () and a resin member () to each other. A concavo-convex shape satisfying the following characteristics (i) and (ii) is formed on a bonding surface () of the metal member () to be bonded to the resin member ().

Metal/resin composite structure

A metal-resin composite structure () is obtained by bonding a metal member () and a resin member () formed of a thermoplastic resin composition (P) to each other. Regarding six linear portions in total on a surface () of the metal member () including three arbitrary linear portions which are parallel to each other and another three arbitrary linear portions which are perpendicular to the former three linear portions, a surface roughness measured according to JIS B0601 (corresponding international standard: ISO4287) satisfies the following requirements (1) and (2) at the same time:

Metal-resin composite structure and metal member

In a complex of the invention, a resin member made of a resin material including a polyolefin and a metal member are joined together through a primer layer. In addition, the resin member is obtained by molding the resin material by injection, a coexistence layer in which a primer resin material configuring the primer layer and the resin material coexist is formed between the primer layer and the resin member, and a thickness of the coexistence layer is in a range of more than or equal to 5 nm and less than or equal to 50 nm.

Complex and method for manufacturing complex

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Sodegaura, Japan

Goro Inoue