Metal components and metal-resin assemblies, and methods for manufacturing them.
The metal member with a laser-formed marking pattern and optimized surface roughness enhances bonding strength and airtightness by ensuring uniform resin filling and chemical bonding, addressing the limitations of existing methods.
JP7877658B2Active Publication Date: 2026-06-23NIPPON LIGHT METAL CO LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- NIPPON LIGHT METAL CO LTD
- Filing Date
- 2021-10-15
- Publication Date
- 2026-06-23
Smart Images
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Abstract
To provide a metal resin joined body which has high joint strength and has sufficient airtightness, and a metal member for obtaining the same.SOLUTION: There are provided a metal member which has a metal substrate made of metal, and a marking pattern having an uneven part formed on the surface of the metal substrate, wherein the marking pattern is formed of one continuous straight line or curve, the plurality of marking patterns are formed so as to adjacently run in parallel with each other, and in a direction perpendicular to a travel direction of the plurality of marking patterns, maximum height roughness Rz of unevenness by the uneven part and an average interval Rsm of the unevenness by the uneven part have a relation of 45≤(180 / π)×Arctan(Rz / (Rsm / 2))≤75; and a metal resin joined boy having a resin molding molded on the surface of the metal member.SELECTED DRAWING: Figure 1
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