Abstract: The method for making a decorative sticker includes the steps of (a) providing a polyester (trade name: Tetoron) base film which has a top surface and a bottom surface, (b) applying a metal coating on the polyester base film by electroplating so that the top and bottom surfaces of the polyester base film can sparkle in the presence of bright light, (c) applying a hot-melt adhesive layer on the bottom surface of the polyester base film, (d) attaching a release paper to the hot-melt adhesive layer, (e) applying a binder layer with a predetermined figure on a predetermined part of the top surface of the polyester base film, (f) printing a first desired pattern on the remaining part of the top surface of the polyester base film by pressing the remaining part with ink, (g) printing a second desired pattern on the remaining part of the top surface of the polyester base film by pressing the remaining part with gold foil, (h) die-cutting the polyester base film on the top surface thereof so as to form a predetermined

Abstract: A copper foil for printed circuits having a rust-preventive and heat-discoloration resistant coat, comprising a first layer of zinc or an alloy or a compound or a composition including zinc mainly, and a second layer including a silane coupling agent and phosphorus or a phosphorus compound, said second layer being positioned on the first layer. A method of producing a copper foil for printed circuits comprising the steps of treating the shiny side of a copper foil in a manner of cathode electrolysis in an alkaline solution including zinc ions and chrome ions, or providing the shiny side of a copper foil with a thin plating layer of zinc or a zinc alloy, and thereafter applying onto the treated surface of the copper foil a solution including a silane coupling agent and phosphorus or a phosphorus compound.

Abstract: A copolyester film was laminated onto a steel sheet, this sheet having double layers consisting of a lower layer of metallic chromium and an upper layer of hydrated chromium oxide on a tin plated steel sheet in which 5 to 40% of the surface of the steel sheet is covered with plated tin and the remainder of the steel surface is exposed and the space between plated tin particles is 0.5 to 50 .mu.m, and a method for production of this copolyester resin film laminated steel sheet which comprises: (a) electroplating with tin under restricted conditions, (b) formation of said double layer on the plated tin and exposed steel surface and (c) lamination of the copolyester resin film at a temperature above the melting temperature of tin.

Abstract: A method for forming a fluororesin film on a metallic substrate is described, which method comprising forming a chromium oxide film on at least one side of a metallic substrate and then forming a fluororesin film on the chromium oxide film. By this, good adhesion of the fluororesin film to the substrate is ensured. Further, when the fluororesin film is degraded, the film is readily removed without damaging the substrate and a fresh fluororesin film can be again formed on the substrate through a fresh chromium oxide film so that the substrate keeps it original dimensional precision and may be used semi-permanently.

Abstract: A colorless chromate coating film is formed on a bright aluminum wheel by subjecting the surface of an aluminum wheel to a cathodic electrolytic treatment in an acidic aqueous solution containing not less than 2 g/l of hexavalent chromium ions, 20 to 2,000 ppm of sulfate ions, 10 to 400 ppm of fluorine (F) as fluoride and not less than 20 ppm of zirconium ions at a pH of 0.6 to 1.7 at a current density of 0.5 to 15 A/dm.sup.2 for at least 30 seconds, thereby forming a coating film with a chromium coating amount of 50 to 250 mg/m.sup.2.

Abstract: Disclosed is a method for electroplating a metal sheet adapted for being used in electronic packaging material, such as printed circuit boards. Bismaleimide and its derivative are added into the plated solution so as to form insoluble particles of bismaleimide and its derivatives on the surface of the metal sheet. The resulting metal sheet is particularly adapted for being bonded to a polyimide film for the preparation of, for example, a printed circuit board. Also disclosed is a method of bonding the metal sheet of the present invention to a polyimide substrate. Precursor of polyimide are coated on the surface of the plate metal sheet and then thermal imidizing of the precursors takes place. No additional adhesives are needed for this bonding.

Abstract: A process is provided for metallizing the hole-wall surface of a through-hole provided in a printed circuit board precursor. In an initial step, the hole-wall surface is pre-treated with an oxidizing agent which micro-roughens it. An electro-conductive polymer film is then formed on the micro-roughened surface by oxidatively polymerizing in situ an acidic solution of an organic monomer with an oxidizing agent previously adsorbed on the board. The polymer film includes dopant anions which are acquired from the monomer solution. Finally, a metal layer is electroplated on the electro-conductive polymer film.

Abstract: The gas-sensing electrodes prepared according to this invention are specifically designed for cells which operate in a current-limited mode, i.e. at current densities well below 20 mA/cm.sup.2. Such cells are particularly useful to measure or detect a gaseous component of a gaseous environment or stream, provided the gaseous component can be electrochemically oxidized or reduced. In an alkaline, metal-oxygen cell for example, an electrode of this invention can be used as an oxygen cathode. The electrode is prepared by:(a) bringing an exposed face of a self-supporting, electrically-conducting sheet of fibrous or sintered-particle material having a thickness of at least about 30 .mu.m and a flexural strength of at least 2000 kPa into contact with an electrolyte containing ions of a catalytic metal, the electrolyte also being in contact with a counterelectrode,(b) applying a pulsed-D.C.

Abstract: Composite-coated flat-rolled steel, product, method of manufacture and method of fabrication in which single or double-reduced low-carbon steel, after surface preparation, is flash-coated with tin (about 0.05 #/bb) which is alloyed with the base metal. Dichromate treatment passivates the tin-iron alloy surfaces depositing a chrome oxide layer prior to application of an organic coating (about 3 to 15 mg/in.sup.2 to each surface). Enhanced coating adhesion of the organic coating enables draw-processing of the double-reduced steel base metal substrate into unitary can bodies without damage to coating or substrate.