×

Method for the continuous flow make of customized planar electrical circuits

  • US 4,935,093 A
  • Filed: 02/11/1988
  • Issued: 06/19/1990
  • Est. Priority Date: 06/07/1982
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of constructing a planar electrical circuit containing inductive and capacitive components and having the form of a flexible, tag-like strip, said method comprising at least the steps of:

  • a. continuously providing a flexible insulative substrate having a first and a second face;

    b. continuously providing a continuous metal foil having a first and a second face, said first face being blank;

    c. continuously providing an etchant impervious sealing layer having a resealing capability and being depositable at least on one of said first faces of said substrate and said metal foil;

    d. continuously bringing in an at least touching superposition said first faces of said substate and metal foil with said sealing layer spaced therebetween, thereby forming a connectable combination;

    e. continuously connecting said combination, in a manner to form an at least tri-layered one-piece sandwich construction having the sealing layer as its central component, by activating said sealing layer for a first time;

    f. continuously generating on said second face of said metal foil a plurality of planar insulative paths, said plurality of insulative paths, forming repetitive etchant resistive mask patterns, each of which having an outline defining the outline of at least first and second conductor path patterns to be successively generated on said substrate;

    g. continuously etching the patternized sandwich contruction;

    h. continuously drying the etched contruction;

    i. continuously recreating the sealing capability of said sealing layer in all places in which the metal has been removed, by chemically treating the contruction;

    k. about at least one line (running in the direction of advance of said contruction) continuously bringing into an aligned superposition equal faces of the etched and sealably recreated construction such, that said first and second conductor path patterns become mutually aligned in an opposing relationship to each other and spaced from each other by at least the double width of said planar insulative paths of said etchant resistive mask patterns, and so that first and second conductor path patterns are trapped between said flexible, insulative substrate having outwardly disposed its second face;

    l. continuously laminating said superposed construction by activating at least said sealing layer for a second time;

    m. repetitively providing severing cuts in the superposed and sealed construction for facilititaion its division into individual flexible, planar electrical circuits in the form of tag-like strips.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×