Patent References 3181986 3324014 Metal-clad laminates Transfer lamination of vapor deposited foils, method and product Transfer lamination of copper thin sheets and films, method and product Printed circuit material Laminate product of ultra thin copper film on a flexible aluminum carrier Patent #: 4431710 InventorsApplicationNo. 06/946115 filed on 12/23/1986US Classes:216/16, Forming or treating resistive material156/233, Metal foil lamina156/249, And assembly with different lamina174/256, With particular material174/257, Conducting (e.g., ink)174/258, Insulating216/20, Adhesive or autogenous bonding of self-sustaining preforms (e.g., prefabricated base, etc.)216/36, Removing at least one of the self-sustaining preforms or a portion thereof29/846, Manufacturing circuit on or in base428/601, Discontinuous surface component428/632, Oxide-containing component428/674Cu-base componentExaminersPrimary: Powell, William A.Attorney, Agent or FirmInternational ClassesH05K 1/16 (20060101)H05K 3/20 (20060101) H05K 3/38 (20060101) H05K 1/03 (20060101) H05K 1/09 (20060101) Foreign Application Priority Data1983-06-22 DEAbstractThe present invention describes an improved reverse lamination process for reparing printed circuits with resistors, conductor strips and/or contacts integrated in the circuit. A separating layer is applied on a metallic intermediate carrier. The intermediate carrier thus coated is then printed with a conductive paste in a desired. mirror-inverted layout to provide the resistors, conductor strips and/or contacts. This is followed by the lamination which is carried out under temperature effect and under pressure, the thus laminated package comprising the intermediate carrier, an intermediate layer and the final substrate. The intermediate carrier is subsequently removed, and the separating layer is etched off. The separating layer acts as a parting agent to permit easy mechanical separation and reuse of the metallic intermediate carrier. | |