Method of producing labels each having a circuit forming an oscillating circuit
First Claim
1. A method of producing a plurality of oscillatory circuits located consecutively on a web, each circuit including a respective inductive element and at least one capacitive element having at least two surfaces, thus forming the oscillatory circuit, and including further an insulating support web having two faces, on a first face of which said inductive element formed of flat electrical conductors and one surface of said capacitive element connected thereto are located according to a predetermined pattern, while a second surface of said capacitive element is located on a second face of said insulating support and is electrically connected to the circuit at the first face, comprising the following steps:
- providing a web of electrically conductive material;
depositing a heat-sealing adhesive onto a first face of the web of electrically conductive material;
punching at a center area of said conductive web including said adhesive one portion of a first circuit part to be located thereat, including one surface of a capacitive element;
thereafter depositing continuously a substantially electrically non-conductive web of an electrically insulating material onto the side of the punched center area provided with said adhesive and bonding said substantially electrically non-conductive web to an electrically conductive part of said center area of the electrically conductive web;
punching at an outer area of the conductive web adjacent to the center area another portion of the first circuit part to be located on the conductive web;
covering the entire conductive web at the face opposite from the substantially electrically non-conductive web with a covering foil of substantially electrically non-conductive material and bonding the conductive web to said foil after punching the first circuit part located on the conductive web; and
placing a second circuit part to be located at an outwardly facing side of said substantially electrically non-conductive web, said second circuit part including a counter surface of the capacitive element of electrically conducting material for each circuit, and connecting said second circuit part electrically to the first circuit part located at the first face of the electrically conductive web.
2 Assignments
0 Petitions
Accused Products
Abstract
In order to produce labels incorporating electrical oscillating circuits, certain parts of the circuits are initially punched out of a center area of a metal web covered by an adhesive. Thereafter the center area is covered by an insulating material web for handling stability in order to thereafter punch out the part of the circuit to be located at the outer web area. A covering foil is laminated onto the metal web and the parts of the circuits to be located at the reverse side are applied onto the insulating material web and connected electrically to the remainder of the circuit. This allows an economical and yet precise mass production of labels, for instance for a use in article safeguarding and controlling systems.
102 Citations
13 Claims
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1. A method of producing a plurality of oscillatory circuits located consecutively on a web, each circuit including a respective inductive element and at least one capacitive element having at least two surfaces, thus forming the oscillatory circuit, and including further an insulating support web having two faces, on a first face of which said inductive element formed of flat electrical conductors and one surface of said capacitive element connected thereto are located according to a predetermined pattern, while a second surface of said capacitive element is located on a second face of said insulating support and is electrically connected to the circuit at the first face, comprising the following steps:
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providing a web of electrically conductive material; depositing a heat-sealing adhesive onto a first face of the web of electrically conductive material; punching at a center area of said conductive web including said adhesive one portion of a first circuit part to be located thereat, including one surface of a capacitive element; thereafter depositing continuously a substantially electrically non-conductive web of an electrically insulating material onto the side of the punched center area provided with said adhesive and bonding said substantially electrically non-conductive web to an electrically conductive part of said center area of the electrically conductive web; punching at an outer area of the conductive web adjacent to the center area another portion of the first circuit part to be located on the conductive web; covering the entire conductive web at the face opposite from the substantially electrically non-conductive web with a covering foil of substantially electrically non-conductive material and bonding the conductive web to said foil after punching the first circuit part located on the conductive web; and placing a second circuit part to be located at an outwardly facing side of said substantially electrically non-conductive web, said second circuit part including a counter surface of the capacitive element of electrically conducting material for each circuit, and connecting said second circuit part electrically to the first circuit part located at the first face of the electrically conductive web. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for producing electrical circuits in the form of flat sheets having capacitive and inductive circuit elements, said method comprising:
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a. providing a web of electrically conductive material, said web having a first face and a second face; b. applying an adhesive layer to the first face of said conductive web; c. punching a first circuit portion by removing part of the material defining a center portion of said conductive web; d. applying a web of substantially electrically non-conductive material over the formed first circuit portion and in contact with the adhesive layer; e. punching a second circuit portion in the conductive web in an area laterally outwardly of and adjacent to the first circuit portion to form a circuit element; f. applying a layer of insulating material to the second face of the web of electrically conductive material. - View Dependent Claims (11, 12, 13)
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Specification