Patent ID: 6955740

Claim:
A method for producing laminates for printed wiring boards using protective-carrier sheeting, the method comprising the steps of: (a) sandwiching a layer of protective-carrier sheeting between two layers of conductive foil extended from one or more conductive-foil sources, wherein a layer of the conductive foil and the protective-carrier sheeting are unwound from a common roll, and wherein the conductive foil comprises copper, and the protective-carrier sheeting comprises aluminum and has a thickness in the range from about 0.08 mm to about 0.5 mm; (b) covering one of the conductive-foil layers with a dielectric layer to sandwich the covered conductive-foil layer between the dielectric layer and the layer of protective-carrier sheeting; and (c) repeating steps (a) and (b) and stacking the layers to form a book without the conductive-foil layers being bonded to the protective-carrier sheeting or to the dielectric layer.