CN211180851U - RFID washing mark - Google Patents

Abstract

The embodiment of the utility model provides an in disclose RFID washing mark relates to linen washing control technical field. This RFID washing mark's layer structure includes in proper order: the antenna comprises a first bending protective layer, a second reinforcing layer, a first adhesive layer, a printed antenna, a first reinforcing layer, a substrate layer, a third reinforcing layer, a second adhesive layer, a fourth reinforcing layer and a second bending protective layer; the minimum curvature radius of the first bending protection layer and the second bending protection layer is larger than the minimum curvature radius of the substrate layer; the printed antenna is formed from a conductive paste containing a liquid metal component. The utility model discloses a set up the bending protection layer that curvature radius is greater than the stratum basale in the outside of stratum basale, can reduce the stratum basale and produce the probability of crease to avoid printed antenna's fracture, simultaneously because the cohesion between the layer structure that the enhancement layer promoted, also further reduced in the printed antenna liquid metal pressurized break through around the phenomenon that the junction appears the migration, thereby guaranteed the structural stability and the reliability of washing mark, satisfied the requirement of industrial washing.

Description

RFID washing mark

Technical Field

The invention belongs to the technical field of linen washing monitoring, and particularly relates to an RFID washing label.

Background

The RFID is a non-contact automatic identification technology, which automatically identifies a target object and obtains related data through a radio frequency signal, does not need manual intervention in identification work, and can work in various severe environments. Nowadays, the RFID technology has realized that high-speed moving objects can be identified and a plurality of tags can be identified simultaneously, thus greatly widening the application of RFID electronic tags in various industry fields. RFID water washing mark (also known as washing electronic tags) is the application product of RFID technique in the linen washing field, and its function is to the monitoring management of hotel's linen carrying out full life cycle to promote hotel's linen's safety in utilization, consequently to an important index of RFID water washing mark just can bear the industrial washing, need it can normally work after the industrial washing.

At present, the overwhelming majority in the vast majority RFID water washes mark on the market can't bear current industry washing equipment (for example wash the dragon), this is mainly because current industry washing equipment not only can produce the highly compressed washing environment of high temperature, and the rotation of big moment of torsion, make RFID water wash mark produce unpredictable distortion in the washing process, and still can exert very big mechanical pressure to RFID water wash mark in the washing process, especially wash mark at RFID water and be bearing this mechanical pressure under the condition that self distorts and warp, then can cause the buckling of RFID water wash mark, thereby produce irreversible crease, lead to the tag antenna fracture or the production crack of performance crease department, thereby direct influence, destroy RFID water wash mark's even.

Disclosure of Invention

In view of the above, an object of the present invention is to provide an RFID water-washed label to solve the problem that the RFID water-washed label in the prior art cannot bear industrial washing and cannot resist bending.

In some illustrative embodiments, the layer structure of the RFID water-washable label sequentially comprises: the antenna comprises a first bending protective layer, a second reinforcing layer, a first adhesive layer, a printed antenna, a first reinforcing layer, a substrate layer, a third reinforcing layer, a second adhesive layer, a fourth reinforcing layer and a second bending protective layer; the minimum curvature radius of the first bending protection layer and the second bending protection layer is larger than that of the substrate layer, and the printed antenna is formed by conductive paste containing liquid metal components.

In some optional embodiments, the RFID water-washable label further comprises: the first anti-compression protective layer is positioned on the outer side of the first bending protective layer, and the second anti-compression protective layer is positioned on the outer side of the second bending protective layer.

In some optional embodiments, a joint surface of the first bending protection layer and the first pressure-resistant protection layer is provided with a fifth reinforcing layer; and a sixth reinforcing layer is arranged on the joint surface of the second bending protective layer and the second anti-pressure protective layer.

In some optional embodiments, the RFID water-washable label further comprises: the first fabric layer is positioned outside the first compression-resistant protective layer, and the second fabric layer is positioned outside the second compression-resistant protective layer.

In some optional embodiments, a fourth glue layer is disposed between the first pressure-resistant protective layer and the first fabric layer, and a fifth glue layer is disposed between the second pressure-resistant protective layer and the second fabric layer.

In some optional embodiments, the RFID water-washable label further comprises: and the label chip is arranged between the first bending protective layer and the first pressure-resistant protective layer/between the second bending protective layer and the second pressure-resistant protective layer.

In some optional embodiments, the first pressure-resistant protective layer and the second pressure-resistant protective layer are made of flexible and stretchable materials.

In some optional embodiments, the substrate layer is a gauze substrate; the first reinforcing layer and the third reinforcing layer are attached to the surface of yarn fibers of the gauze substrate and are of an integral structure; and the conductive paste permeates into the inside of the gauze substrate to form the printed antenna.

In some optional embodiments, the first bending protection layer, the second bending protection layer and the substrate layer are made of flexible and non-stretchable materials.

In some optional embodiments, the conductive paste is a mixed conductive paste of a liquid metal and a conductive silver paste; wherein the weight ratio of the liquid metal to the conductive silver paste is 1: 5-4: 3.

Compared with the prior art, the method has the following advantages:

in the embodiment of the invention, the reinforcing layer for improving the surface adhesive force is arranged on the surface of the base material, and the bending protective layer with the curvature radius larger than that of the base layer is arranged on the outer side of the base layer, so that the probability of crease generation of the base layer can be reduced, and the fracture of the printed antenna is avoided.

Drawings

FIG. 1 is a first exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 2 is a second exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 3 is a third exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 4 is a fourth exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 5 is a fifth exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 6 shows an exemplary structure of an RFID water label according to an embodiment of the present invention;

FIG. 7 is a seventh exemplary structure of an RFID water-washable label according to an embodiment of the present invention;

FIG. 8 is a first example of a structure of a bend-resistant flexible electronic in an embodiment of the present invention;

FIG. 9 is a cross-sectional side view of a bend-resistant flexible electronic in an embodiment of the present invention;

fig. 10 is a second structural example of the bending-resistant flexible electronic in the embodiment of the present invention.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments of the invention may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed.

It should be noted that, in the present invention, the technical features may be combined with each other without conflict.

The embodiment of the invention discloses an RFID (radio frequency identification) water-washing label (also called a water-washing electronic tag, an RFID water-washing electronic tag and a water-washing label), as shown in figure 1, and figure 1 is a schematic structural diagram of the water-washing electronic tag in the embodiment of the invention. This RFID washing mark includes: a flexible non-stretchable bending protection layer 1 and an antenna layer 2; the bending protection layer 1 includes a first bending protection layer 11 and a second bending protection layer 12, which are respectively located on two sides of the antenna layer 2 to wrap the antenna layer 2 inside the first bending protection layer and the second bending protection layer. The antenna layer 2 comprises a flexible non-stretchable base layer 21 and a printed antenna 22 attached to the base layer 21; wherein, the minimum curvature radius of the first bending protection layer 11 and the second bending protection layer 12 is larger than the minimum curvature radius of the substrate layer 21.

The minimum radius of curvature in this embodiment refers to the radius of curvature of the outer circular arc surface of the base material in the folded state, and for a base material having no amount of elastic deformation, it can be generally considered that the thickness of the base material is approximately equal to the minimum radius of curvature, that is, the thicknesses of the first bending protection layer 11 and the second bending protection layer 12 are greater than the thickness of the base layer 21.

The stratum basale 21 is owing to be located first protection layer 11 and the second of buckling between the protection layer 12 of buckling, when the label is whole to be buckled, attached stratum basale 21 on first protection layer 11 and the second protection layer 12 of buckling then can keep being greater than the arc degree of the arc surface under the first protection layer 11/the second protection layer 12 fifty percent discount condition of buckling, consequently, because the first protection layer 12 of buckling/the second protection layer 12's of buckling restriction, stratum basale 21 self hardly reaches the state of turning over soon, also consequently, the probability that produces the crease on can effectual reduction stratum basale 21, just also can reach the effect that reduces the probability that the printing antenna 22 fracture/the crackle that adheres to on stratum basale 21 appears, thereby promote the washing fastness degree of RFID water mark.

According to the invention, on the basis of the flexible and non-stretchable antenna layer, the flexible and non-stretchable bending protection layers are respectively arranged on the two sides of the antenna layer, and the bending strength and the bending stress borne by the antenna layer when external pressure is applied to the antenna layer are reduced by utilizing the bending protection layers with the curvature radius larger than that of the antenna layer, so that the antenna layer is not easy to generate creases, and further the risk of fracture or crack at the creases is reduced; on the other hand, buckle protective layer and stratum basale and adopt flexible inextensible material, make both difficult emergence flexible deformation at the in-process of pressurized, make its curvature radius be influenced hardly at the in-process of washing to guarantee buckle the protective action to the antenna layer of protective layer, guarantee the resistant industrial washing's of RFID washing mark in this application performance.

Further, the thickness of the first bending protection layer 11 and the second bending protection layer 12 in the embodiment of the present invention is 2 to 5 times of the thickness of the base layer 21. Specifically, the thickness of the base layer 21 may range between 20 μm and 100 μm; the thickness of the first bending protection layer 11 and/or the second bending protection layer 12 may range between 100 μm and 300 μm.

In some embodiments, one or more of the first bending protection layer 11, the second bending protection layer 12 and the substrate layer 21 in the embodiments of the present invention may be made of flexible non-stretchable materials such as PI film, PET film, and other flexible non-stretchable materials in the prior art. In the embodiment of the present invention, the first bending protection layer 11, the second bending protection layer 12 and the substrate layer 21 are all made of insulating materials.

In some embodiments, the first bending protection layer 11 and the second bending protection layer 12 in the embodiments of the present invention may be a split structure, or may be an integrated structure, in which the first bending protection layer and the second bending protection layer may be formed to cover the antenna layer 2 by folding and packaging; the thicknesses of the first bending protection layer 11 and the second bending protection layer 12 in the split structure can be selected within the above range, and the thicknesses may not be uniform.

Specifically, in the embodiment of the present invention, the first bending protection layer 11 and the antenna layer 2 may be bonded by a first adhesive layer 31, and the second bending protection layer 12 and the antenna layer 2 may also be bonded by a second adhesive layer 32, which may be bonded by sewing in addition to the adhesive layer. Preferably, the first bending protection layer 11 and the second bending protection layer 12 in the embodiment of the present invention are respectively bonded to the antenna layer 2 through the first adhesive layer 31 and the second adhesive layer 32, and the adhesive bonding is simple in process and not easy to damage the substrate compared with the sewing, and the thickness influence is much lower than that of the sewing.

The adhesive layer in this embodiment may be a liquid/solid adhesive, such as a two-component hot-pressing adhesive, or a solid adhesive, such as a hot-melt adhesive film, specifically, TPE, TPU, TPV, etc. having the function of this property.

In some embodiments, the substrate layer 21 may be, but is not limited to, a single layer structure, in which case the antenna layer 2 is a double layer structure, i.e., the substrate layer 21 and the printed antenna 22 attached thereon; the antenna layer 2 of the structure is combined with the first bending protective layer 11 and the second bending protective layer 12 through the first adhesive layer 31 and the second adhesive layer 32, namely, the label structure sequentially comprises the first bending protective layer 11, the first adhesive layer 31, the printed antenna 22, the substrate layer 21, the second adhesive layer 32 and the second bending protective layer 12 from top to bottom.

As shown in fig. 2, the base layer 21 may be a multilayer structure encapsulating the printed antenna 22, for example, the base layer 21 may be a first base layer 21 and further include a second base layer 23, the first base layer 21 and the second base layer 23 cooperate to sandwich the printed antenna 22 therein, and the first base layer 21 and the second base layer 23 are bonded to each other by a third adhesive layer 33 to form the antenna layer 2 having a 4-layer structure; it may be formed by first printing the printed antenna 22 on the surface of the first substrate layer 21 and then bonding the first and second substrate layers 21, 23 by means of the third glue layer 33. The first substrate layer 21 and the second substrate layer 23 may be combined in a split manner, or may be combined in an integrated manner, and the first substrate layer and the second substrate layer are bent to form a coating on the printed antenna 22. After the antenna layer 2 is combined with the first bending protection layer 11 and the second bending protection layer 12, the first bending protection layer 11, the first adhesive layer 31, the second substrate layer 23, the third adhesive layer 33, the printed antenna 22, the first substrate layer 21, the second adhesive layer 32 and the second bending protection layer 12 are sequentially formed from top to bottom.

In the case of selecting a double-layer structure for the substrate layers in the above embodiments, the first substrate layer 21 and the second substrate layer 23 can form protection for the printed antenna 22, and therefore the first bending protection layer 11 and the second bending protection layer 22 can also select flexible and non-stretchable fabric materials, such as artificial fibers or synthetic fibers, for example, nylon fibers, which are flexible and not easy to stretch, and have good resilience after bending, and are not easy to form creases thereon, so that the influence of the stress at the creases on the first bending protection layer 11 and/or the second bending protection layer 12 on the antenna layer 2 can be reduced. In this embodiment, the first bending protection layer 11 and/or the second bending protection layer 12 are made of the fabric material, or only one of the first bending protection layer and the second bending protection layer may be made of the fabric material, or the other one may be made of PI film, PET film, or the like, and still achieve a certain effect.

Wherein, the base layer 21 in this application chooses for use the individual layer structure, is the label structure of first protection layer 11, first glue film 31, printed antenna 22, base layer 21, second glue film 32, the second protection layer 12 of buckling from last to down in proper order promptly. Wherein, the optional fabric material of second protection layer 12 of buckling that combines through second glue film 32 with stratum basale 21, because first protection layer 11 and stratum basale 21 of buckling are to the protection of printing antenna, consequently buckle the no waterproof performance requirement of protection layer 12 to the second, consequently the optional fabric material of protection layer 12 is buckled to the second, can reduce the probability that the protection layer of buckling produced the crease to a certain extent, it chooses bilayer structure for use to need not stratum basale 21 in antenna layer 2 simultaneously, both can reduce the whole thickness of washing label, also can reduce label production technology one at least simultaneously, thereby promote label production efficiency and reduce label manufacturing cost.

As shown in fig. 3, further, the RFID water-washable label in the embodiment of the present invention may further include an outer protective layer located on the first bending protective layer 11 and the second bending protective layer 12, such as a first fabric layer 41 and a second fabric layer 42; the first fabric layer 41 and the first bending protection layer 11 can be bonded through the fourth glue layer 34; the second fabric layer 42 and the second bending protection layer 12 can be bonded through the fifth glue layer 35. Through set up the fabric layer outside the label body, can promote RFID washing mark and its uniformity between the linen that will install to promote user's use comfort and experience.

The RFID washing label in the embodiment of the invention can be used as a chipless label, and the corresponding printed antenna adopts the antenna specification of the chipless label, the specific pattern size and the like, and the application does not limit the RFID washing label.

In other embodiments, the RFID water-washed label in the embodiments of the present invention may further include: a tag chip 5; this label chip 5 can be connected with the printing antenna 22 direct contact in the antenna layer 2, also can adopt and pass through the mutual interactive label chip of coupling with printing antenna 22, and this label chip 5 need not to set up and directly links with printing antenna 22, only need set up printing antenna's assigned position can, for example central point puts the department, and wherein, the concrete position of coupled label chip 5 is prior art, and this application is not repeated its. Can buckle protective layer 11/second through selecting for use this label chip 5 and buckle on protective layer 12 lateral surface with it setting first, can avoid establishing it at the protective layer of buckling inside to the resistant buckling and structural stability of printing antenna cause the influence, label chip 5 fixed accessible point on the protective layer of buckling is glued etc. multiple mode.

Preferably, the label chip 5 can be arranged between the bending protection layer and the fabric layer, and the structure formed by the adhesive layer between the bending protection layer and the fabric layer is used for limiting and fixing the label chip 5.

With reference to fig. 4-5, in some embodiments, a flexible and stretchable first pressure-resistant protective layer 61 and a second pressure-resistant protective layer (not shown) may also be disposed between the bending protective layer and the fabric layer, and the label chip 5 is disposed between the first bending protective layer 11 and the first pressure-resistant protective layer 61; can make label chip 5 have certain deformation displacement volume in vertical direction through this structure to offset/alleviate RFID washing mark at the in-process of industry washing, the damage of label chip is avoided to the pressure that the label chip bore. The pressure-resistant protective layer can be of a fluid structure or a sheet structure, and the pressure-resistant protective layer can be made of silica gel, rubber, silicon rubber, polyurethane, epoxy resin and the like.

Preferably, the pressure-resistant protective layer in the embodiment of the present invention may be vulcanized silicone rubber or a silicone film or thermoplastic polyurethane for thermocompression bonding, which may directly replace a glue layer between the bending protective layer and the fabric layer or cooperate with the glue layer to construct a stable layer structure.

The conductive paste for printing the printed antenna 22 in the embodiment of the present invention may include: a polymer carrier, high-melting-point metal particles and low-melting-point metal in a liquid state at normal temperature. Wherein, the macromolecular carrier can comprise resin (water washing/oil), thickening agent, diluting agent and other functional auxiliary agents; the high melting point metal particles may include, but are not limited to, silver powder, copper powder, silver-coated copper powder, and aluminum powder; the low melting point metal may include, but is not limited to, gallium-based alloys such as elemental gallium, gallium-indium alloy, gallium-indium-tin alloy, and gallium-indium-tin-zinc alloy.

In other embodiments, the conductive paste may also be selected from conventional conductive silver paste, conductive aluminum paste, conductive copper paste, liquid metal, and the like; preferably, the conductive paste in this application is direct through the liquid metal mixed conductive paste that forms that mixes liquid metal and electrically conductive silver thick liquid (aluminium thick liquid), through mix this type of low melting point metal back in silver thick liquid, can strengthen the pliability of printing antenna on the one hand, on the other hand is based on the printing antenna of the liquid metal that has mobility, even under its self because under the cracked condition appears in buckling, the liquid metal in the printing antenna also can play the effect of self-resuming to guarantee the stable normal and the dependable performance of printing antenna. Preferably, the conductive silver paste can be commercial screen printing silver paste.

The weight ratio of the liquid metal to the conductive silver paste in the embodiment of the present invention may be 1: 30-30: 1, and exemplarily, the weight ratio of the liquid metal to the conductive silver paste may be 1:30, 1:25, 1:20, 1:15, 1:10, 1:5, 1:3, 1:2, 2:3, 4:5, 1:1, 4:4, 3:2, 2:1, 3:1, 5:1, 10:1, 15:1, 20:1, 25:1, or 30: 1.

Preferably, the weight ratio of the liquid metal to the conductive silver paste is 1: 20-1: 2; if the proportion of liquid metal in whole conductive paste surpasss above-mentioned scope, then the liquid metal content in the unit area is great, receive under the condition of very big pressure at RFID washing mark, flowable liquid metal not only can migrate in the printing antenna circuit, but also can break through the constraint of glue film between basal layer 21 and the protection layer of buckling, thereby outwards migrate from the position of printing antenna originally, cause the structural stability of printing antenna to descend, influence the electric conductive property of printing antenna, cause the problem of local short circuit/fracture of printing antenna even. If the proportion of the liquid metal in the whole conductive paste is lower than the range, the content of the liquid metal in unit area is smaller, the liquidity of the liquid metal is poor, when the RFID water-washed label is bent to break the printed antenna, the liquid metal at the broken part can migrate to the peripheral circuits of the printed antenna, but is easily bound by the frame of the solidified silver paste in the peripheral circuits, and the liquid metal cannot be well recovered from the migrated part after being bent and recovered, so that the self-repairing effect of the liquid metal is influenced. When the printed antenna is in the range, the problem of liquid metal pressure migration is improved, and the printed antenna can be pulled back to the initial position by the solidified silver paste at the bent part under the condition of fracture, so that the self-repairing effect can be guaranteed.

The thickness range of the printed antenna formed by the liquid metal mixed conductive paste in the embodiment of the invention is controlled between 5 mu m and 20 mu m; if the thickness of the printed antenna is lower than the size range, the liquid metal can not be uniformly coated in the sintered silver paste system, and if the thickness of the printed antenna exceeds the size range, the printed antenna is easy to break.

The embodiment of the invention also discloses an RFID washing label, wherein the RFID washing label has a stable layer structure, and the problem that the layers are not easy to separate from each other is solved.

As shown in fig. 6, the RFID water-washed label in this embodiment includes: the base layer 21, the reinforcing layer 71, the printed antenna 22, the first glue layer 31 and the protective layer 8; the enhancement layer 7 is arranged on the surface of the substrate layer 21, the printed antenna is arranged on the surface of the enhancement layer 71, the size of the printed antenna 22 is smaller than that of the enhancement layer 71, and the enhancement layer 71 completely bears the printed antenna 22; the base layer 21 and the protective layer 8 are combined through the enhancement layer 71 and the first adhesive film 31, and the printed antenna 22 is packaged inside the base layer and the protective layer; the first adhesive layer 31 is located above the printed antenna 22 and simultaneously contacts the reinforcement layer 71 below the printed antenna 22.

One of the functions of the protective layer 8 is to cooperate with the substrate layer 21 to package the printed antenna 22, thereby functioning as oxygen isolation, water resistance and corrosion resistance.

The base layer 21 and the protective layer 8 may be flexible and non-stretchable substrates, such as PI films and PET films, among other flexible and non-stretchable substrates in the prior art.

This enhancement layer (adhesive force enhancement layer) 71 has the surface of alligatoring, can promote and the cohesion between the first glued membrane 31, and by the enhancement layer 71 and the first glued membrane 31 under the circumstances of the firm cohesion of enhancement layer 71 with first glued membrane 31, the stable initial shape pattern that has restricted its printing antenna 22, the structural stability of RFID washing mark has been promoted promptly, the liquid metal in the printing antenna 22 has also been promoted simultaneously and has been pressed to the degree of difficulty of near non-antenna regional migration, the performance stability of RFID washing mark has been guaranteed.

The reinforcing layer 71 can select a special adhesion improver for the selected base material, which can show good adhesion on the surface of the corresponding base material, and the surface of the formed reinforcing layer can show good adhesion to the outside, so that an adhesion promoting film layer is formed on the surface of the base material; for example, for the PI film, polyimide paint or the like can be selected; the same is true for PET films; preferably, the reinforcing layer 71 in the embodiment of the present invention may be a polydopamine film layer; the substrate can be formed by coating a polydopamine solvent on the surface of the substrate and curing the polydopamine solvent, or can be formed by immersing the substrate in the polydopamine solvent and taking out the polydopamine solvent and curing the polydopamine solvent. Polydopamine is suitable for the surface modification of most substrates compared to other specialty coatings.

In some embodiments, the enhancement layer 71 is a first enhancement layer, and further includes: the second reinforcing layer 72 is arranged on the surface of the protective layer 8, so that the first reinforcing layer 71 on the substrate layer 21 passes through the first adhesive layer 31 and the second reinforcing layer 72 on the protective layer 8, and the adhesive force modification is carried out on the surfaces of the substrate layer 21 and the protective layer 8 to form the reinforcing layers, so that the adhesive strength of the first adhesive film 31 and the second adhesive film is high under the adhesion of the two layers, and the stability of the overall structure of the label and the binding force of the label on the printed antenna are further enhanced.

Specifically, the substrate layer 21 and the protective layer 8 in the embodiment of the present invention may be made of other materials such as PI film, PET film, and the like.

According to the RFID water washing label, the reinforcing layer capable of improving the adhesive force of the base layer is arranged on the surface of the base layer, so that the combination stability between the base layer and the protective layer is improved, the structural stability of the RFID water washing label is improved, and the washing resistance of the RFID water washing label is ensured.

As shown in fig. 7, the embodiment through strengthening the stability of combining between the RFID washing mark layer structure in this embodiment can combine with the anti embodiment of buckling of above-mentioned promotion RFID washing mark, and protective layer 8 can include the above-mentioned protective layer of buckling, RFID washing mark promptly, and the structure from top to bottom includes: the first bending protection layer 11, the second reinforcement layer 72, the first adhesive layer 31, the printed antenna 22, the first reinforcement layer 71, the substrate layer 21, the second adhesive layer 32, and the second bending protection layer 12.

In some embodiments, a third reinforcing layer 73 and/or a fourth reinforcing layer 74 may also be disposed between the base layer 21 and the second bending protection layer 12.

Referring to fig. 3-5, further, the protective layer of the RFID water-washable label in the embodiment of the present invention may further include an outer protective layer located on the first bending protective layer 11 and the second bending protective layer 12, such as a first fabric layer 41 and a second fabric layer 42; the first fabric layer 41 and the first bending protection layer 11 can be bonded through the fourth glue layer 34; the second fabric layer 42 and the second bending protection layer 12 can be bonded through the fifth glue layer 35. Through set up the fabric layer outside the label body, can promote RFID washing mark and its uniformity between the linen that will install to promote user's use comfort and experience.

The bonding surfaces of the first bending protection layer 11 and the second bending protection layer 12, the fourth adhesive layer 34 and the fifth adhesive layer 35 can also be respectively provided with a fifth reinforcing layer and a sixth reinforcing layer, so that the bonding force between the first bending protection layer and the adhesive layer is improved.

The RFID washing label in the embodiment of the invention can be used as a chipless label, and the corresponding printed antenna adopts the antenna specification of the chipless label, the specific pattern size and the like, and the application does not limit the RFID washing label.

In other embodiments, the RFID water-washed label in the embodiments of the present invention may further include: a tag chip 5; this label chip 5 can directly link with the printing antenna 22 in the antenna layer 2, also can adopt and pass through the mutual interactive label chip of coupling with printing antenna 22, and this label chip 5 need not to set up and directly links with printing antenna 22, only need set up the assigned position of printing antenna can, for example central point puts the department, and wherein, the concrete position of coupled type label chip 5 is prior art, and this application is not repeated its. Can buckle protective layer 11/second through selecting for use this label chip 5 and buckle on protective layer 12 lateral surface with it setting first, can avoid establishing it at the protective layer of buckling inside to the resistant buckling and structural stability of printing antenna cause the influence, label chip 5 fixed accessible point on the protective layer of buckling is glued etc. multiple mode.

Preferably, the label chip 5 can be arranged between the bending protection layer and the fabric layer, and the structure formed by the adhesive layer between the bending protection layer and the fabric layer is used for limiting and fixing the label chip 5.

In some embodiments, the protective layer may further include a flexible and stretchable first pressure-resistant protective layer 61 and a second pressure-resistant protective layer 62 between the bending protective layer and the fabric layer, and the label chip 5 is disposed between the first bending protective layer 11 and the first pressure-resistant protective layer 61; can make label chip 5 have certain deformation displacement volume in vertical direction through this structure to offset/alleviate RFID washing mark at the in-process of industry washing, the damage of label chip is avoided to the pressure that the label chip bore. The pressure-resistant protective layer can be in a fluid structure or a sheet structure, and the pressure-resistant protective layer can be made of silica gel, rubber, polyester and the like.

Preferably, the pressure-resistant protective layer in the embodiment of the present invention may be vulcanized silica gel or a silica gel sheet for hot pressing, which may directly replace a glue layer between the bending protective layer and the fabric layer or cooperate with the glue layer to construct a stable layer structure.

In some embodiments, the fabric layer has a plain weave face and a twill weave face; the twill woven face is opposite to the adhesive layer, and the adhesive layer can be combined with the fabric layer through the twill woven face immersed in the fabric layer. And the burr on the twill weaving face then can carry out stable combination with the glue film, promotes the combination stability of the two.

The conductive paste for printing the printed antenna 22 in the embodiment of the present invention may include: a polymer carrier, high-melting-point metal particles and low-melting-point metal in a liquid state at normal temperature. Wherein, the macromolecular carrier can comprise resin (water washing/oil), thickening agent, diluting agent and other functional auxiliary agents; the high-melting metal may be a metal having a melting point of 300 ℃ or higher, and the low-melting metal may be a metal having a melting point of 30 ℃ or lower. Specifically, the high melting point metal particles may include, but are not limited to, silver powder, copper powder, silver-coated copper powder, and aluminum powder; the low melting point metal may include, but is not limited to, gallium-based alloys such as elemental gallium, gallium-indium alloy, gallium-indium-tin alloy, and gallium-indium-tin-zinc alloy.

In other embodiments, the conductive paste may also be selected from conventional conductive silver paste, conductive aluminum paste, conductive copper paste, liquid metal, and the like; preferably, the conductive paste in this application is direct through the liquid metal mixed conductive paste that forms that mixes liquid metal and electrically conductive silver thick liquid (aluminium thick liquid), through mix this type of low melting point metal back in silver thick liquid, can strengthen the pliability of printing antenna on the one hand, on the other hand is based on the printing antenna of the liquid metal that has mobility, even under its self because under the cracked condition appears in buckling, the liquid metal in the printing antenna also can play the effect of self-resuming to guarantee the stable normal and the dependable performance of printing antenna. Preferably, the conductive silver paste can be commercial screen printing silver paste.

The weight ratio of the liquid metal to the conductive silver paste in the embodiment of the present invention may be 1: 30-30: 1, and exemplarily, the weight ratio of the liquid metal to the conductive silver paste may be 1:30, 1:25, 1:20, 1:15, 1:10, 1:5, 1:3, 1:2, 2:3, 4:5, 1:1, 4:4, 3:2, 2:1, 3:1, 5:1, 10:1, 15:1, 20:1, 25:1, or 30: 1.

Preferably, the weight ratio of the liquid metal to the conductive silver paste is 1: 20-1: 2; if the proportion of liquid metal in whole conductive paste surpasss above-mentioned scope, then the liquid metal content in the unit area is great, receive under the condition of very big pressure at RFID washing mark, flowable liquid metal not only can migrate in the printing antenna circuit, but also can break through the constraint of glue film between basal layer 21 and the protection layer of buckling, thereby outwards migrate from the position of printing antenna originally, cause the structural stability of printing antenna to descend, influence the electric conductive property of printing antenna, cause the problem of local short circuit/fracture of printing antenna even. If the proportion of the liquid metal in the whole conductive paste is lower than the range, the content of the liquid metal in unit area is smaller, the liquidity of the liquid metal is poor, when the RFID water-washed label is bent to break the printed antenna, the liquid metal at the broken part can migrate to the peripheral circuits of the printed antenna, but is easily bound by the frame of the solidified silver paste in the peripheral circuits, and the liquid metal cannot be well recovered from the migrated part after being bent and recovered, so that the self-repairing effect of the liquid metal is influenced. When the printed antenna is in the range, the problem of liquid metal pressure migration is improved, and the printed antenna can be pulled back to the initial position by the solidified silver paste at the bent part under the condition of fracture, so that the self-repairing effect can be guaranteed.

The thickness range of the printed antenna formed by the liquid metal mixed conductive paste in the embodiment of the invention is controlled between 5 mu m and 20 mu m; if the thickness of the printed antenna is lower than the size range, the liquid metal can not be uniformly coated in the sintered silver paste system, and if the thickness of the printed antenna exceeds the size range, the printed antenna is easy to break.

Referring to fig. 8-10, another objective of the present invention is to provide a bending-resistant flexible electronic device, which is not easily creased and can be used as the antenna layer 2, so as to improve the bending resistance of the RFID washable label, and the printed antenna 22 is not easily broken. Specifically, this bending-resistant flexible electron includes: a gauze base 91, and a conductive line 92 attached to a target position of the gauze base 91; the conductive traces 92 are formed by penetrating conductive paste into the gauze substrate and adhering to the surface of the yarns at the target position to form conductive traces penetrating through both sides of the gauze substrate.

In the embodiment of the invention, the conductive circuit is attached to the surface of the gauze by taking the gauze as the substrate of the conductive circuit, and the gauze fabric has good bending resistance and is not easy to generate creases, so that the bending resistance of the conductive circuit can be improved, and the problem of fracture is not easy to occur.

The conductive paste in this embodiment may include: a polymer carrier, high-melting-point metal particles and low-melting-point metal in a liquid state at normal temperature. Reference may be made to the above embodiments, which are not described herein again.

The bending resistance of the flexible electron can be further improved by combining the bending resistance flexible electron with the liquid metal mixed conductive paste in the embodiment of the invention.

In some embodiments, it may further include: and an encapsulation protective layer 93 covering the gauze substrate 91. The package protection layer 93 may include a first flexible and non-stretchable package protection layer (e.g., the above-mentioned bending protection layer) stacked; and/or a flexible stretchable second encapsulation protective layer (e.g., the compression resistant protective layer described above).

In some embodiments, it may further include: a fabric layer (such as the fabric layer described above) disposed outside the protective layer 93.

In some embodiments, it may further include: the electronic components (such as resistors, inductors, capacitors, and other conventional components, and electronic chips) directly connected or coupled to the conductive traces 92 may be positioned according to the actual requirements of the conductive traces 92, and refer to the above-mentioned contents or the prior art in this application.

The bending-resistant flexible electronic tag can be used as an RFID electronic tag, an RFID washing label and the like, when the bending-resistant flexible electronic tag is used as the tag, the conductive circuit 92 of the bending-resistant flexible electronic tag is used as a tag antenna, and the electronic chip is a tag chip. Besides the RFID tag, the bending-resistant flexible electronic circuit in the present application can also be applied to a flexible electronic circuit and a rigid electronic circuit, which is not limited herein.

The embodiment of the invention also discloses a multilayer flexible electronic, which comprises: at least 2 single-layer flexible electrons connected by a shingle; wherein each of the single layers of flexible electrons comprises: the screen comprises a screen base body and a conductive circuit attached to a target position of the screen base body; the conductive line is permeated into the gauze substrate by conductive slurry and is attached to the surface of the yarn on a target position to form a conductive line penetrating through two sides of the gauze substrate; the conductive circuit comprises a connection point; the single-layer flexible electrons are connected with each other through the lapping of the connection points of the respective conductive circuits.

Further, the multilayer flexible electronic device may further include: a protective layer covering the at least 2 single-layer flexible electrons connected by a lap joint.

Further, an insulating layer is arranged between the single-layer flexible electrons and between the areas which are not the connection points.

Specifically, each embodiment in this application can the intercombination, for example an RFID washing mark, its structure from top to bottom includes: the first bending protective layer 11, the second reinforcing layer 72, the first adhesive layer 31, the printed antenna 22, the first reinforcing layer 71, the base layer 21, the third reinforcing layer 73, the second adhesive layer 32, the fourth reinforcing layer 74 and the second bending protective layer 12. The first bending protective layer 11, the second bending protective layer 12 and the substrate layer 21 are made of flexible non-stretchable materials, and the minimum curvature radius of the first bending protective layer 11 and/or the second bending protective layer 12 is larger than that of the substrate layer 11; the printed antenna adopts liquid metal mixed conductive paste, and preferably, the weight ratio of the liquid metal to the conductive silver paste in the conductive paste is 1: 20-1: 2.

The substrate layer 21 of the RFID water-washed label in the embodiment is protected by the first bending protective layer 11 and the second bending protective layer 12, so that the risk of crease generation on the substrate layer 21 can be effectively reduced, and the probability of fracture of the printed antenna 22 attached to the substrate layer 21 is reduced; and through liquid metal conductive paste, and through at stratum basale 21, first buckle protective layer 11, the second buckles the surface of protective layer 12 and forms the enhancement layer in order to strengthen RFID washing mark interlaminar combination stability, can reduce the preparation degree of difficulty of the printing antenna of RFID washing mark, ripe printing technique realizes among the accessible prior art, the promotion of the cohesion between the RFID washing mark intermediate level structure has further restricted the migration of liquid metal in the printing antenna again, when reduction printing antenna that can be very big is pressed, wherein liquid metal breaks through the gluing region around it. Moreover, the liquid metal mixed conductive paste with the weight ratio of the liquid metal in the conductive paste to the conductive silver paste being 1: 20-1: 2 can be selected, so that unexpected migration of the liquid metal generated when the printed antenna is pressed is further reduced, and the self-repairing capability of the liquid metal in the printed antenna is ensured. Promptly, the RFID washing mark that above-mentioned combination formed, the resistant industry washing performance of promotion RFID washing mark that can be very big guarantees the structural stability and the functional reliability of RFID washing mark.

The embodiment can also comprise a fifth reinforcing layer and a sixth reinforcing layer which are positioned outside the first bending protective layer and the second bending protective layer; the printed antenna can also comprise a first pressure-resistant protective layer, a second bending protective layer, a first fabric layer, a second fabric layer, a fourth adhesive layer and a fifth adhesive layer which are positioned on the outer side, and a coupling label chip which is matched with the printed antenna to work, and the specific material selection and the position setting can refer to the above embodiment, and are not repeated herein.

The RFID water-washed label in another combined embodiment can replace the substrate layer with a gauze substrate on the basis of the embodiment of the RFID water-washed label, and the liquid metal mixed conductive slurry permeates into the gauze substrate to form a printed antenna; the first reinforcing layer 71 and the third reinforcing layer 73 are attached to the surface fibers of the gauze substrate and penetrate into the meshes of the gauze substrate, so that the conductive paste can be stably attached to the meshes of the gauze substrate.

The rest of the structure can be found on the basis, and the above embodiments are referred to, and are not described herein again.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Claims (9)

1. The utility model provides a RFID water washes mark, its characterized in that, this RFID water washes the layer structure of mark includes in proper order: the antenna comprises a first bending protective layer, a second reinforcing layer, a first adhesive layer, a printed antenna, a first reinforcing layer, a substrate layer, a third reinforcing layer, a second adhesive layer, a fourth reinforcing layer and a second bending protective layer; the minimum curvature radius of the first bending protection layer and the second bending protection layer is larger than the minimum curvature radius of the substrate layer; the printed antenna is formed from a conductive paste containing a liquid metal component.

2. The RFID water-washed label according to claim 1, further comprising: the first anti-compression protective layer is positioned on the outer side of the first bending protective layer, and the second anti-compression protective layer is positioned on the outer side of the second bending protective layer.

3. The RFID water washable label of claim 2, wherein a fifth reinforcing layer is arranged on a combined surface of the first bending protective layer and the first pressure-resistant protective layer; and a sixth reinforcing layer is arranged on the joint surface of the second bending protective layer and the second anti-pressure protective layer.

4. The RFID water-washed label according to claim 2, further comprising: the first fabric layer is positioned outside the first compression-resistant protective layer, and the second fabric layer is positioned outside the second compression-resistant protective layer.

5. The RFID water washable label of claim 4, wherein a fourth glue layer is disposed between said first pressure-resistant protective layer and said first fabric layer, and a fifth glue layer is disposed between said second pressure-resistant protective layer and said second fabric layer.

6. The RFID water-washed label according to claim 2, further comprising: and the label chip is arranged between the first bending protective layer and the first pressure-resistant protective layer/between the second bending protective layer and the second pressure-resistant protective layer.

7. The RFID water washable label of claim 2, wherein said first and second compression-resistant protective layers are flexible and stretchable materials.

8. The RFID water washable label of claim 1, wherein said substrate layer is a gauze substrate; the first reinforcing layer and the third reinforcing layer are attached to the surface of yarn fibers of the gauze substrate and are of an integral structure; and the conductive paste permeates into the inside of the gauze substrate to form the printed antenna.

9. The RFID water washable label of claim 1, wherein the first and second flexible protective layers and the substrate layer are flexible and non-stretchable.

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