Rfid system for fabrics
AssigneeME Innovation SRL
InventorDavide ZANESI
Life of this patent
Estimating the term…
Abstract
The present invention refers to the field of electronic devices, with reference to the sector of data transmission and reception operating in radio frequency and even more particularly to the sector of TAGs operating in RFID technology. In particular, the present invention deals with devices for RFID communication preferably applied or made on flexible or semi-flexible supports, with particular reference to textile supports.
Claims9
RFID system (1, 10,100) for flexible supports such as fabrics, said RFID system comprising at least one device (D), said device (D) comprising at least:
- a dielectric element base layer (11);
- a secondary antenna (2) made of textile conductive material;
- at least one die (3) rigid electronic module;
- characterized in that it is also included
- a further primary antenna (4) made of laminated or wire conductive material;
- at least one dielectric closure layer (5);
- said device (D) being fixed to at least one flexible or ultra-flexible support layer (0), said RFID system being a UHF, HF and/ or NFC RFID system, said secondary antenna (2) in conductive textile material being adapted to reinforce said primary antenna (4) made of laminated or wire conductive materials, one or both antennas (2,4) being adapted to refract the magnetic field emitted by an RFID/NFC reader and said secondary antenna (2) being centred and superimposed with respect to the primary antenna (4), allowing the distribution of electrical conduction even in the event of breaks in the primary antenna (4), the magnetic field crossing the two conductive antennas (2,4), activating the electronic module (3), amplifying the signal emitted by said module (3), the dielectric element (11) and the dielectric layer (5) being coupled by bonding or fusion between them and with the support layer (0), the module (3) and the primary antenna (4) and the secondary antenna in conductive textile material (2) remaining between said layers (1) and (5).
RFID system (10) for flexible supports such as the fabrics according to the previous claims, wherein said device (D) provides a base dielectric layer (80) which is made to increase the adhesion of the device (D) to the support (0) and the moisture resistance of the system (1,10) said layer (80) can be both adhesive and thermo-adhesive being suitable to act as a supporting support for the system (10), said base support (0) having any degree of elasticity.
RFID system (100) for flexible supports such as the fabrics according to the preceding claims, wherein the device (D) comprising part or all of the secondary antenna in conductive fabric (2), the primary antenna in laminated or wire conductive material (4), the rigid electronic module (3) and also the base dielectric layer (11) or upper layer (5), is protected with a layer of rigid, semi-rigid or a combination of materials (600).
RFID system (101) for flexible supports such as the fabrics according to the preceding claims, wherein said system (101) comprises instead of the rigid or semi-rigid layer (600) a layer of lyner or film (102) coupled to the primary antenna in laminated or wire material (4), to the rigid electronic module die (3), to the antenna in textile conductive material (2), and to the base layer of dielectric (11) to confer structural support to the system (101).
RFID system (110) for flexible supports such as the fabrics according to the preceding claims, wherein said system (110) is made as semi-processed comprising at least a dielectric layer (510) and the primary antenna in the form of a shaped aluminium sheet (410), this simplifying the welding of the die rigid electronic module (3) and the electrical coupling with said secondary antenna in conductive fabric (2), in this case the secondary antenna (2) amplifying the signal.
Production method according to the RFID system (1,10,100) for flexible supports such as the fabrics according to the preceding claims, wherein said method or process comprises at least the steps of:
- sizing of the base dielectric (11) or roll processing of the base dielectric (11);
- pre-forming of the textile conductive layer or secondary antenna (2) (model with a “gluing” side described above) with die-cutting, or laser cutting or mechanical cutting etc., realization with defined shape (textile Sdie)=(laminated or wire conductive Sdie);
- hot or cold application of the basic dielectric (11) with roller or flat press or hot heat press (15 seconds at 55° C. for example) or with ultrasonic system or other types of technologies suitable for coupling two layers.
- alternatively:
- lamination of the secondary antenna conductive textile material (2) on the adhesive/thermo-adhesive dielectric (11) through traditional lamination processes;
- semi die-cutting of the layer of conductive textile secondary antenna (2) without carving the adhesive/thermo-adhesive dielectric (11) through die-cutting, laser cutting, mechanical cutting, ultrasonic cutting etc.;
- scrap of conductive material for secondary antenna (2) in excess and subsequent sizing of the adhesive/thermo-adhesive dielectric (11);
- pre-forming of the sheet of conductive material or laminated or wire antenna (4) through for example die-cutting, laser cutting or mechanical cutting.
- positioning the antenna (4) by centring it on the dielectric layer (5) with a control system such as pick&place;
- (A variant includes the passage with heat pressure at 150° C. for 1-2 seconds to make the foil adhere well with any thermo-adhesive dielectric).
- gluing phase:
- a glue point is given with the machine;
- positioning of the rigid electronic module (3) by means of a control system;
- coupling of the assembly composed of the layers (11,2) with the assembly composed of the layers (3,4,5) through a control system. possible heat sealing of the closing device (D) at 155° C., for example 1/2 seconds.
Production method according to the RFID system for flexible supports such as fabrics (1,10,100) according to the preceding claims, wherein said basic dielectric layers (11) can be coupled to a layer or film or already sized, to move the various semi-finished products during processing;
- for the processing steps starting from the roll, said processing includes at least the steps of:
- pre-forming of the textile conductive layer or secondary antenna (2) (model with a “gluing” side described above) with die-cutting, or laser cutting or mechanical cutting etc., realization with defined shape (textile Sdie)=(laminated or wire conductive Sdie);
- pre-forming the sheet of laminated or wire conductive material first antenna (410) through, for example, die-cutting, laser cutting or mechanical cutting.
- positioning the antenna (410) by centring it on the dielectric layer (510) with a control system such as pick&place;
- (A variant includes passing with heat pressure at 150° C. for 1-2 seconds to make the sheet adhere well with any thermo-adhesive dieletric).
- gluing phase:
- a glue point is given with the machine;
- positioning of the rigid electronic module (3) by means of a control system;
- coupling assembly formed by (410,510,3) with the secondary antenna in conductive fabric (2);
- creation of the stiffened area (620,621) through resin coating, liquid stiffening, application of rigid dielectric layers etc. through control machines, positioners and others suitable for the purpose;
- in the case of resin coating or liquid stiffening, air, UV, chemical, oven, laser polymerization treatment, etc.
- dielectric sizing or rolling of the dielectric (11);
- application of the dielectric (11) with the assembly formed by (410,510,3,2,620,621)
- through roller application, thermo-pressing, continuous application, sheeting, etc.
- possible layer of adhesive or thermo-adhesive polymeric closure material (80) obtained as per the models present.
RFID system (120) for flexible supports such as the fabrics according to the preceding claims, wherein said system (120) is made as semi-finished product comprising at least one PCB formed by a dielectric layer (510) and a shaped aluminium sheet primary antenna (410) for welding the die rigid electronic module (3).
Dependencies are inferred from the claim text.