Method for partially plating on a base
AssigneeSumitomo Shoji Plastics Co., Ltd.
InventorRyoh Itoh
Life of this patent
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Abstract
A base of synthetic resins or other materials is partially plated. The base includes not only a single base but an assembly with a number of chip bases for producing electronic and electric parts such as printed circuit board, lead frame insert molded circuit parts, etc. A method for partially plating a base by the use of a plating catalyst includes a coating process to coat a surface to be plated or not to be plated by means of a coating material selected from a water soluble polymer or hydrolyzable polymer either before or after a catalyst applying process to soak a container containing the base in a plating catalyst bath.
Claims6
A method for partially plating on a base, comprising:
- a roughing process to rough a base surface of the base,
- a coating process to partially coat a coating material selected from the group consisting of a water soluble polymer and hydrolyzable polymer on a predetermined coating area in a roughed surface of the base,
- a catalyst applying and coated material removing process to apply a plating catalyst on the base surface except a coated portion with the coating material and to remove the coating material applied on the base, simultaneously,
- a plating process to plate on a catalyst applied surface.
A method for partially plating on a base, comprising:
- a coating process to partially coat a coating material selected from the group consisting of a water soluble polymer and hydrolyzable polymer on a predetermined coating area of the base,
- a roughing process to rough a surface of the base except a coated portion with the coating material,
- a catalyst applying and coated material removing process to apply a plating catalyst on a roughed surface and to remove the coating material applied on the base, simultaneously, and
- a plating process to plate on a catalyst applied surface.
Dependencies are inferred from the claim text.