INSERT METAL MEMBER FOR METAL-RESIN COMPOSITE MOLDED BODY, AND METAL-RESIN COMPOSITE MOLDED BODY

摘要

[Objective] The present invention provides a technology whereby a rough surface is formed on the surface of an insert metal member to increase the airtightness on an interface between the insert metal member and a resin member. [Means to solve] The insert metal member (1) for a metal resin composite molded body (5) having a function of blocking gas or liquid includes a rough surface area (3) having a plurality of rough surfaces on the surface thereof. The rough surface area (3) is formed at least on the insert metal member (1) and a portion or the whole part of a surface to be welded with the resin member (6), which is inserted and molded on the insert metal member (1). On the surface to be welded, the rough surface area (3) does not have a rough surface, which penetrates from an edge of a blocking side with which the gas or the liquid contacts to an edge of an open part with which the gas or the liquid does not contact.