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 Coated parts with film having powder-skeleton structure, and method for forming coating

Details
Inventors: Sagawa, Masato; Watanabe, Hiroshi; Shirai, Hiroo;
Assignee: Intermetallics Co., Ltd. (Kyoto, JP)
Primary Examiner: Beck; Shrive
Assistant Examiner: Maiorana; David M.
Attorney, Agent or Firm: Fish & Richardson

Powder-content of a powder-coating is enhauced. Powder material forms a skeleton structure. The clearances are filled with resin. The coating comprises a resin layer which bonds the power-compacted layer to the parts or any underlying powder-compacted layer. The work pieces on which a resin film may be preliminarily formed, is subjected to vibration or stirring together with the powder material and means for mediating the formation of the coating, which eans is of substantially smaller size than said work pieces and greater size than said powder material, as well as with or without the resin, to vibration or stirring in a container.

DETAILED DESCRIPTION We claim: 1.
A method for forming a coating on parts, comprising vibrating or stirring in a container said parts, a liquid or semi-liquid curable first resin which is at least partially uncured at least in an initial period of the coat-firming, a powder material and means for mediating the formation of the coating, thereby forming the coating on said parts containing the powder material, wherein the means for mediating is of substantially smaller size than said parts and of a greater size than said powder material.
2.
A method according to claim 1, wherein said first resin contains solvent.
3.
A method according to claim 1, wherein said parts, said powder material and said first resin are successively or simultaneously loaded into the container and said mediating means is loaded prior to the loading of said parts, said resin and said powder material and are subjected to said vibration or stirring.
4.
A method according to claims 1, wherein said parts are further subjected to removal of the powder material remaining unfixed thereon.
5.
A method according to claim 1, wherein said coating on said parts is subjected to heat treatment.
6.
A method according to claim 1, wherein said parts, on which said coating is formed, are subjected to formation of a coating of a second resin thereon.
7.
A method according to claim 6, wherein said coating of said second resin is formed by subjecting said parts to vibration or stirring in a container which contains said second resin and mediating means for forming the coating, which means is substantially smaller than said parts.
8.
A method according to claim 6, wherein the coating of said second resin is carried out by painting.
9.
A method according to claim 1, wherein said powder material is electro-conductive, and, after formation of said coating, a layer of metal or alloy is formed on said coating.
10.
A method according to claim 9, wherein the formation of said layer of metal or alloy is carried out by an electro- or electroless plating



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