초록 ▼

The invention provides a novel process for the mass production of thin, flexible electrical low-cost circuits. More particularly, the invention concerns the super mass production of flexible planar LC circuits, as are commercially desired as marker means in electronic article surveillance systems. T

The invention provides a novel process for the mass production of thin, flexible electrical low-cost circuits. More particularly, the invention concerns the super mass production of flexible planar LC circuits, as are commercially desired as marker means in electronic article surveillance systems. The novel method provides the computerized nonstop super-mass production of such circuits and breaks down prior art barriers in view of limits for custom designs of shape, face, and resonant properties of such circuits. Custom designs of circuits are easily layouted onscreen of a modern personal computer. The data obtained thereof are downloaded to the process line. Hopping custom circuit designs with ease is unprecedentedly introduced. Forming tools have been abandoned. As an exclusive longlife production tool electromagnetic wave energy is extensively used. The circuits obtained may be washed and sewn and nicely go one way with a pretty commercial face.

대표청구항 ▼

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. continuo

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.