Abstract: A supported copper foil is disclosed, comprising: a poly-based film that contains polyimide and polytetrafluoroethylene; a thin copper foil; and an adhesive provided between the poly-based film and the thin copper foil, the adhesive removably coupling the poly-based film to the copper foil.

Abstract: A press pad for use in lamination of multi-layer circuit boards is disclosed. The press pad includes: a planar pad having a first surface and a second surface opposite to the first surface; and a sheet of release film coupled to the first surface, wherein the release film sheet is coupled to the first surface using an acrylic-based adhesive containing thermoplastic polyolefin and methyl acrylate, and wherein the release film sheet comprises polyimide-based film.

Abstract: A supported copper foil is disclosed, comprising: a poly-based film that contains polyimide and polytetrafluoroethylene; a thin copper foil; and an adhesive provided between the poly-based film and the thin copper foil, the adhesive removably coupling the poly-based film to the copper foil.

Abstract: A method of manufacturing a supported copper product is disclosed. The method includes: providing a thin copper foil and a poly-based film containing polyimide and polytetrafluoroethylene, the poly-based film having an adhesive applied to a surface of the poly-based film; thermally treating the thin copper foil and the poly-based film along their respective lengths, the thermal treatment being adjustable to vary an amount of heat applied to the thin copper foil and the poly-based film; and attaching the thermally treated thin copper foil and the thermally treated poly-based film using the adhesive applied at the surface of the poly-based film.

Abstract: A method of manufacturing a press pad is disclosed. The method includes: providing a planar pad having a first surface and a second surface opposite to the first surface and a release film sheet, the release film sheet including a polyimide-based film; cleaning the planar pad, the cleaning including electrostatically removing particulates from surfaces of the planar pad; and attaching a release film sheet to the first surface of the planar pad, the release film sheet being attached to the first surface using an acrylic-based adhesive containing thermoplastic polyolefin and methyl acrylate.

Abstract: A method of manufacturing a press pad is disclosed. The method includes: providing a planar pad having a first surface and a second surface opposite to the first surface and a release film sheet, the release film sheet including a polyimide-based film; cleaning the planar pad, the cleaning including electrostatically removing particulates from surfaces of the planar pad; and attaching a release film sheet to the first surface of the planar pad, the release film sheet being attached to the first surface using an acrylic-based adhesive containing thermoplastic polyolefin and methyl acrylate.

Abstract: A method of manufacturing a press pad is disclosed. The method includes: providing a planar pad having a first surface and a second surface opposite to the first surface; cleaning the planar pad, the cleaning including electrostatically removing particulates from the first and second surfaces of the planar pad; and attaching a first release film sheet to the first surface and a second release film sheet to the second surface, the release film sheets being attached to the first and second surfaces using an acrylic-based adhesive containing thermoplastic polyolefin and methyl acrylate.

Abstract: A method of manufacturing a supported copper product is disclosed. The method includes: providing a thin copper foil and a poly-based film containing polyimide and polytetrafluoroethylene, the poly-based film having an adhesive applied to a surface of the poly-based film; thermally treating the thin copper foil and the poly-based film along their respective lengths, the thermal treatment being adjustable to vary an amount of heat applied to the thin copper foil and the poly-based film; and attaching the thermally treated thin copper foil and the thermally treated poly-based film using the adhesive applied at the surface of the poly-based film.

Abstract: A method for manufacturing a printed circuit board (PCB) comprises firstly constructing a first book which includes first and second supported copper foils located at the bottom and top respectively. Each supported copper foil includes a respective poly-based film, a thin copper foil, and an adhesive provided between the film and the thin foil; the adhesive being permanently attached to the film and removably attached to the thin foil. The first book further comprises a first prepreg adjacent the thin foil of the first foil, copper clad laminates adjacent the first prepreg, and a second prepreg on a side of the copper clad laminates that opposes a side adjacent the first prepreg. Next, applying a lamination cycle to the first book using a laminating press to cure the first and second prepregs. Finally, removing the films from the thin foils associated with each of the first and second supported foil.

Abstract: Supported copper foils and method for making and using supported copper foils are described. In an aspect, a supported copper foil includes: a polyethylene terephthalate (PET) film; a thin copper foil; and an adhesive provided between the PET film and the thin copper foil, the adhesive removably coupling the PET film to the copper foil.