Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
Priority to ES0242261ApriorityCriticalpatent/ES242261A1/en
Publication of ES242261A1publicationCriticalpatent/ES242261A1/en
Insulated Metal Substrates For Printed Circuits
(AREA)
Abstract
Method of manufacturing an electrically insulating panel having an electrically conductive pattern on at least one side, in which an insulating layer containing a heat-settable synthetic resin hardened only in part is provided on each side with a metal layer, parts of which in the form of the desired conductive pattern are covered with a protective layer, the uncovered parts being removed using a liquid that dissolves or eliminates them by metal biting, characterized by the fact that the insulating layer consisting of a small number of leaves, but at least two, of paper impregnated with a thermosetting resin not fully cured, after the removal of the uncovered parts of the metal layers, it is divided parallel to its surface into two metallic layers, it is divided in parallel to its surface in two separate insulating layers each having a conductor path on one side, after which at least one layer is attached to an insulating substrate in a heated press and, during this process, the conductor pattern is pressed into the insulating layer and the thermosetting resin is fully cured. (Machine-translation by Google Translate, not legally binding)
ES0242261A1958-06-041958-06-04Method of manufacturing an electrically insulating panel. (Machine-translation by Google Translate, not legally binding)
ExpiredES242261A1
(en)
Method of manufacturing printed circuit elements for attaching conductive metal bushings in a blank to holes covered with conductive metal coatings and for attaching metal wire conductors to the metal bushings.
An electrical device of the type that has a layer or conductive film on a non-conductive base (Machine-translation by Google Translate, not legally binding)
Procedure for the production of an adhesive metal protective layer on a surface of an oximethylene polymer (Machine-translation by Google Translate, not legally binding)