Abstract:
There are disclosed (1) an injection-molded thermoplastic resin article having on a surface thereof a copper foil or a copper foil circuit, wherein the thermoplastic resin comprises one of polycarbonate, polyethersulfone, and polyetherimide and an adhesive layer comprising polyvinyl butyral having a degree of polymerization of up to 1000, polyvinyl formal having a degree of polymerization of up to 1000, or a mixture of both polymers is formed either the copper foil or the copper foil circuit and the molded thermoplastic resin and (2) a process for producing such injection-molded thermoplastic resin articles.
Abstract:
A layer of copper foil (14, 16) is etched to a required conductor pattern, coated with a thin layer of uncured fibre-free epoxy polymer, (26, 28) and then another layer of copper foil (22, 24) is placed on top. The sandwich is bonded by heat and pressure which cures the layer of polymer (26, 28). The top foil (22, 24) is etched to form another required conductor pattern which is both electrically insulated from and mechanically adhered to the underlying conductor layer (14, 16) by the layer (26, 28) of cured polymer. These steps are repeated as often as is necessary to build up the required number of layers. Interconnections between different layers are either formed by drilling and plating through holes (30), or by a etching hole in a conductor (222) and then plasma etching through the exposed polymer (226) to the underlying conductor (214) with subsequent metal plating (235) to join the conductors in the different layers. The outermost conductive layer can be formed as physically isolated pads or islands of metal. Connections to and from these pads are through conductors buried in the underlying layer of the polymer.
Abstract:
In Folienschaltungstechnik, bei der auf einem isolierenden Träger aufgebrachte Metallschichten die elektrischen Bauelemente darstellen, werden die Verluste von HF-Spulen, von Kondensatoren und von Widerständen durch die vorliegende Erfindung verringert. Hierzu werden Metallfolien (1, 5) mit möglichst geringer Rauhtiefe z. B. auf eine Kunststoffolie (3) aufkaschiert, indem die Folien durch Schichten (2, 4) aus einem aushärtenden Kleber verklebt werden. Der Kleber wird in gelöstem Zustand auf die Metallfolien gebracht und vom Lösungsmittel befreit; schließlich wird die Kaschierung durch Druck und Wärme hergestellt.
Abstract:
The problem of the invention is to provide a resin composite electrolytic copper foil having further improved heat resistance and improved plate adhesion strength when plated after desmear treatment in the work process of an additive method. The solution is to form a roughened surface having a plurality of minute projections, a surface roughness (Rz) within a range of 1.0 µm to 3.0 µm and a lightness value of not more than 30 on one surface of an electrolytic copper foil (A), and form a layer of a resin composition (B) containing a block copolymerized polyimide resin (a) having a structure that imide oligomers of a first structural unit and a second structural unit are bonded alternately and repeatedly on the roughened surface.
Abstract:
The invention relates to a method for producing at least one connection support, said method having the following steps: A) provision of a sheet metal support (1) comprising a level cover surface (1a), B) application of at least one electrically insulating insulation strip (2) to the cover surface (1a) and bonding of the sheet metal support (1) to the insulation strip (2), C) application of at least one electrically conductive conductor strip (3) to an adhesion surface (2a) of the insulation strip (2) and bonding of the insulation strip (2) to the conductor strip (3), the conductor strip (3) and the sheet metal support (1) being electrically insulated from one another by means of the insulation strip (2).
Abstract:
The present invention relates to a copper-resin composite body and provides the copper-resin composite body which is excellent in adhesive property between copper and resin and is applicable to a continuous production process such as a wire production process. The present invention uses the copper-resin composite body including a metal (3 )made of copper or a copper alloy and resin (7) adhering to the metal (3) via a nanoporous layer (5) formed on a surface of the metal (3). It is preferable that the nanoporous layer (5) contains copper-oxide particles of 5 nm to 500 nm in average particle diameter. Further, a process for producing the copper-resin composite body includes a process for forming a copper-oxide nanoporous layer on the surface of the metal made of copper or the copper alloy by irradiating the surface of the metal with laser and a process for forming resin on the copper-oxide nanoporous layer.
Abstract:
A copper foil composite comprising a copper foil and a resin layer laminated thereon, satisfying an equation 1: (f 3 x t 3 )/(f 2 x t 2 ) => 1 wherein t 2 (mm) is a thickness of the copper foil, f 2 (MPa) is a stress of the copper foil under tensile strain of 4%, t 3 (mm) is a thickness of the resin layer, f 3 (MPa) is a stress of the resin layer under tensile strain of 4%, and an equation 2:1 1 /(F x T) wherein f 1 (N/mm) is 180° peeling strength between the copper foil and the resin layer, F(MPa) is strength of the copper foil composite under tensile strain of 30%, and T (mm) is a thickness of the copper foil composite, wherein a Cr oxide layer is formed at an coating amount of 5 to 100 µg/dm 2 .is formed on a surface of the copper foil on which the resin layer is not laminated.