Abstract: The invention relates to a flat transponder having an electronic circuit which is arranged in a layer or in a layer composite and which contains at least one chip and conductor tracks or conductor wires, and also to a method for the production thereof. The invention is based on the object of specifying a transponder of the type mentioned at the beginning and a method for the production thereof which is flexible, has the most uniform thickness possible and can be bonded to further elements by means of water-based adhesives, its electronic components largely being protected against damage by bending and against being detected by feel. According to the invention, the object is achieved by a transponder in which the circuit is arranged in or on a circuit carrier (7) made of plastic, on whose two larger opposite outer surfaces a paper layer (6) applied by lamination is in each case applied.

Abstract: A method to test the authenticity of a document (1), such as an ID, a passport or a card, protected against forgery, wherein it comprises at least an inner co-laminated fabric layer (2) forming an optical watermark. This layer presents cuts, and so separated zones with fabric material and other zones without fabric material, forming well recognizable forms or pictures. Co-laminating one or a plurality of such fabric layers inside of the document body allows to create a multiple watermark having both surface relief and opacity effect, without adding any volume to the body of the document.

Abstract: According to the method of stripping a portion of a wire of the invention, the insulated wire including the wire core are first flattened before the insulation is stripped away. The flattening eases the stripping as the insulation is partially cracked and dissociated of the wire core, and the stripping is more efficiently applied on a flat surface. A wire stripping machine and a transponder antenna with stripped portions are also claim as being part of the invention.

Abstract: The invention refers to a functional laminate (1) comprising at least two co-laminated layers (2, 2?, 3, 3?), wherein at least one of the layers (2, 2?, 3, 3?) is a patchwork layer consisting of zones (2.1 to 2.n, 2?.1 to 2?.n, 3.1 to 3.n, 3?.1 to 3?.n) of multiple types distinct from each other, wherein at least one zone (2.1 to 2.n, 2?.1 to 2?.n, 3.1 to 3.n, 3?.1 to 3?.n) of a first type comprises a first material and one zone (2.1 to 2.n, 2?.1 to 2?.n, 3.1 to 3.n, 3?.1 to 3?.n) of a second type comprise a second material, distinct from the first material, and wherein the proximate layer or layers (2, 2?, 3, 3?) adjacent to the patchwork layer (2, 2?, 3, 3?) comprises or comprise at least one zone (2.1 to 2.n, 2?.1 to 2?.n, 3.1 to 3.n, 3?.1 to 3?.n) comprising the first or the second material.