# US 2004/0072015 A1 · Composite material with improved binding strength and method for forming the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0072015 A1 - Document ID: US20040072015A1 - Status: Published application - Kind: A1 - Application number: 10/034,775 - Filed: 2001-12-27 - Published: 2004-04-15 - Earliest claimed: 2000-12-27 - Assignees: Shipley Company, L.L.C. - Inventors: Masaru Seita; Hideki Tsuchida; Masaaki Imanari; Masaru Kusaka; Koichi Yomogida; Hidemi Nawafune; Syozo Mizumoto; Shingo Ikeda - Web page: https://patentgrep.com/patent/US20040072015A1 ## CPC - H05K 3/181: {by electroless plating (adhesives therefor H05K3/387)} - C23C 30/00: Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence) - H05K 3/22: Secondary treatment of printed circuits {(H05K3/1283 takes precedence; embedding circuits in grooves by pressure H05K3/107)} - H05K 2203/0278: Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive - H05K 2203/121: Metallo-organic compounds - Y10T 428/12014: having metal particles - Y10T 428/31692: Next to addition polymer from unsaturated monomers - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract This invention offers a composite material with improved binding strength and a method for its manufacture. In particular, the invention offers a composite material having metal at the surface of a resin base, obtained by subjecting the surface of a resin base to an ion exchange group introduction treatment, treating the surface of said resin base with liquid containing metal ions, and then reducing said metal ions, where the aforementioned composite material resin is characterized in that the resin base and metal of said composite material are hot-pressed. Said composite material has superior binding strength between resin base and metal relative to composite materials obtained by electroless plating which have inferior binding strength between resin base and metal. Moreover, said composite material is readily manufactured because hot-press methods can be used in the formation of said composite material. ## Claims ### Claim 1 A composite material having metal at the surface of a resin base, obtained by subjecting the surface of a resin base to an ion exchange group introduction treatment, treating the surface of said resin base with liquid containing metal ions to introduce metal ions, and then reducing said metal ions, said composite material being characterized in that the resin base and metal of said composite material are hot-pressed. ### Claim 2 (depends on 1) The composite material according to claim 1, wherein the ion exchange group introduction treatment is carried out by plasma treatment or ion exchange group introduction agent treatment. ### Claim 3 (depends on 1, 2) The composite material according to claim 1 or 2, wherein the binding strength between the resin base and metal is 5 N/cm or greater. ### Claim 4 (depends on 1, 2, 3) The composite material according to any one of claims 1-3, wherein the metal is a metal selected from V, Cr, Mn, Fe, Co, Ni, Cu, Ga, As, Se, Mo, Ru, Rh, Pd, Ag, Cd, In, Sb, Te, Os, Ir, Pt, Au, Hg, Pb, Bi and alloys thereof. ### Claim 5 (depends on 1, 2, 3, 4) The composite material according to any one of claims 1-4, characterized in that hot-pressing is carried out under conditions of a temperature of 100-300° C., a pressure of 490-2450 N/cm2 and a time of 5-30 min. ### Claim 6 (depends on 1, 2, 3, 4, 5) A composite material, obtained by subjecting the composite material of any of claims 1-5 to an additional plating treatment. ### Claim 7 (depends on 1, 2, 3, 4, 5, 6) The composite material according to any one of claims 1-6, wherein the composite material is subjected to the plating treatment prior to hot-pressing. ### Claim 8 A method for forming a composite material with improved binding strength between resin base and metal, which comprises (1) a process wherein the resin base surface is subjected to an ion exchange group introduction treatment, (2) the surface of said resin base is treated with liquid containing metal ions in order to introduce metal ions, (3) a process wherein said metal ions are reduced and a composite material having metal at the surface of the resin base is formed, and (4) a process wherein the metal and resin base of said composite material are hot-pressed. ### Claim 9 (depends on 8) The method for forming the composite material according to claim 8, characterized in that the composite material is subjected to the plating treatment after process (3) and/or after process (4).