Jacquard woven label with 2d code

Abstract

A Jacquard woven label (1) includes a two-dimensional code, called the 2D code, encoding an identifier, where the warp yarn density of the label (1) is between 38 and 70 yarns per cm, the warp yarns of the label (1) have a fineness between 50 and 110 dtex, the weft yarn density of the label (1) is between 65 and 125 yarns per cm, and the weft yarns of the label (1) have a fineness between 20 and 65 dtex.

Description

TECHNICAL FIELD

[0001] The invention relates to the technical field of Jacquard weaving, and more particularly to the field of Jacquard weaving of labels such as for ready-to-wear or textile accessories such as bracelets.PRIOR ART

[0002] Jacquard woven labels having two-dimensional codes such as QR codes are known in the art.

[0003] A woven QR code of this type can be used on garments, to provide information to the user. It can be used in traceability (logistics or anti-counterfeiting). It can also be adapted for the manufacture of identification bracelets for access to campsites or festivals, for example.

[0004] The document JP 3132067 describes such a woven label. However, the ranges given for the selection of the yarns and the contexture of the label are neither sufficiently precise nor suitable for being capable of producing Jacquard woven labels in a reliable and repeatable manner. As an example, one difficulty with weaving a label with a two-dimensional code resides in the fact that a fabric is flexible, and the deformation of a two-dimensional code impairs reading thereof. In addition, the interlacing of the yarns made during weaving can distort the code and also impair reading.

[0005] The document WO 2013 / 001380 also describes a Jacquard woven label with a QR code. The teachings of this document have the same shortcomings.

[0006] Furthermore, the document JP 2009161884 describes a Jacquard woven label comprising a QR code. In this document as well, the proposed ranges are not sufficiently precise to reach a satisfactory compromise between the various constraints which are encountered. The document cites a more precise example of a label, but its performance in terms of code legibility, reliability and repeatability of the weave is not optimal.

[0007] In addition, a 2D code presents a data number (square modules, or pixels) which correlates with the quantity of coded information. If the code encoded by the 2D code is too large (by data volume) because it comprises too many characters, then the 2D code will comprise many pixels.

[0008] When weave patterning this 2D code, a choice must then be made between:

[0009] good legibility of the 2D code, by imposing a minimum dimension for the pixels, and hence the minimum dimension for the woven 2D code; and

[0010] the maximum size which it is desired to give to this 2D code, in particular in the case of a label the width of which rarely exceeds 4 cm or 5 cm.

[0011] The smaller the woven 2D code, the more regularly the yarns defining the pixels must be interlaced in order to form said pixels. Too many yarn interlacing points will cause the fabric (and therefore the 2D code) to deform, which will impair its legibility. In cases of too great a density of information, this excessive number of interlacing points could even generate jams on the weaving loom.

[0012] Thus, weaving 2D codes in a reliable and repeatable manner presents difficulties.

[0013] Weaving of Jacquard labels with variable data is also known. That is to say, for a label manufacturing batch:

[0014] they share fixed data such as a brand logo, and

[0015] they have variable data which are specific to one or more labels, such as garment sizes or a serial number.

[0016] The variable data can be unique (serialization) or repeated (several labels have the same garment size, for example). A variable label manufacturing batch may comprise at least 50 different combinations of fixed data and variable data, or at least 100, 500 or even 1000 different combinations. In certain traceability applications where the variable data are unique, a manufacturing batch may comprise at least 10000 or even 100000 different combinations, because each label is unique.

[0017] When it is desired to manufacture labels with variable data, one difficulty resides in the weave patterning of the labels to be woven: from an industrial point of view, it is not possible to carry out this weave patterning manually, because the operating times would be multiplied by the number of variable data. Automated weave patterning software is used.

[0018] Automated weave patterning has the advantage of speeding up the weave patterning of a large number of labels, however it suffers from the disadvantage of not being as qualitative and optimized as manual weave patterning. As an example, automatic weave patterning can lead to an insufficient number of weft yarn interlacings or, in contrast, too many. This results in defects during weaving (yarn loops which are too loose, deformation of the woven pattern). These defects could make a woven 2D code illegible. However, the difficulty with reading is not consistent and depends on the reading and weaving of each item of variable data: there is a risk that while the majority of labels will be legible, a significant and unacceptable portion of the labels will be illegible.

[0019] The difficulties with weaving 2D codes are therefore exacerbated in the case of the Jacquard weaving of 2D codes with variable data, and even more so if the codes are unique.

[0020] In cases of traceability applications, all delivered labels must be legible. In addition, the operation of the proposed traceability solution, based on woven labels, must be guaranteed for at least the entire lifetime of the products concerned: it could be about ten years for an accessory such as a handbag.

[0021] A fortiori, the operation of the proposed traceability solution must be guaranteed for at least the entire lifetime of the traceability application per se (thus, from the release date of the first traced item, until the end of the life of the last traced item put on the market). This period may therefore be about fifteen, or even twenty years.

[0022] The weave of woven labels with a 2D code must therefore be stable and repeatable over a long period of time, even in the case of automated reading; this has not been possible with the solutions of the prior art.SUMMARY OF THE INVENTION

[0023] The invention aims to overcome the problems of the prior art by proposing a label which is compatible with the Jacquard weaving of two-dimensional codes (“2D codes”), in a reliable and repeatable manner, and preferably with variable data.

[0024] To this end, a Jacquard woven label comprising a two-dimensional code encoding an identifier has been developed.

[0025] In accordance with a first embodiment of the invention:

[0026] the warp yarn density of the label is comprised between 38 and 70 yarns per cm;

[0027] the warp yarns of the label have a fineness comprised between 50 and 110 dtex;

[0028] the weft yarn density of the label is comprised between 65 and 125 yarns per cm;

[0029] the weft yarns of the label have a fineness comprised between 20 and 65 dtex.

[0030] In accordance with a second embodiment of the invention:

[0031] the warp yarn density of the label is comprised between 75 and 140 yarns per cm;

[0032] the warp yarns of the label have a fineness comprised between 40 and 72 dtex;

[0033] the weft yarn density of the label is comprised between 64 and 96 yarns per cm;

[0034] the weft yarns of the label have a fineness comprised between 20 and 100 dtex.

[0035] This multiple choice for yarn density and warp and weft fineness makes it possible to obtain a label:

[0036] of sufficient density for it to be rigid enough (and prevent the deformation of the QR code, which would destroy its legibility);

[0037] of sufficient definition and resolution to enable the code to be legible,

[0038] while guaranteeing a reliable and repeatable weave.

[0039] In particular, the use of finer yarns for the warp as well as for the weft makes it possible to have more flexible yarns, deforming the weave at the level of the QR code less (where the interlacing points are particularly numerous).

[0040] So that the density of information of the code is not too high, the code comprises an alphanumeric string comprising between 30 and 45 characters, for example 35 characters. In one embodiment, the identifier is a unique identifier. This embodiment makes it possible to obtain labels which are suitable for traceability or even authentication applications.

[0041] Advantageously, the unique identifier comprises an alphanumeric string, preferably composed of 9 to 12 characters. This number of characters is more than enough to obtain a large number of unique identifiers (more than 28×1011 identifiers).

[0042] In one embodiment, the alphanumeric string simultaneously comprises numbers and letters, preferably selected from a predetermined list. The mixture of alphabetic and numeric characters within the identifier means that an average quantity of data to be encoded can be obtained. In fact, the numbers are encoded in fewer bytes than certain alphabetic characters. Systematically mixing numbers and letters avoids having:

[0043] codes composed only of numbers (corresponding to few bytes, therefore easy to code, and QR codes which are easy to weave); and

[0044] codes composed only of letters (corresponding to more bytes, therefore less easy to code, and QR codes which are less easy to weave).

[0045] Preferably, the characters are selected from a predetermined list, which makes it possible to avoid the easiest characters to encode (little data) and the most difficult characters to encode (more data).

[0046] In order to be compatible with the most widespread labels on the ready-to-wear market, the 2D code has dimensions comprised between 9 and 25 mm, or between 15 and 20 mm, or between 10 and 12 mm.

[0047] Advantageously, the weft yarns comprise ground yarns and stitch yarns, and floats of the stitch yarns located on the back of the label are interlaced at the level of floats of weft yarns located on the front of the label in accordance with a rhythm equal to or a divider of the rhythm of the weave of the weft yarns, in order to increase the rigidity of the label. Thus, the 2D code deforms less and is easier to read.

[0048] The 2D code optimized in accordance with the aforementioned characteristics enables a batch of labels to be manufactured which have variable data within the batch, such as variations of an article according to its size or colour. Preferably, the identifier of each label is unique, which enables individual item traceability applications to be implemented.

[0049] The invention also concerns a method for manufacturing a batch of labels, comprising the steps consisting of:

[0050] obtaining a first list of identifiers, defining a manufacturing batch;

[0051] producing a weave pattern for the batch of labels to be woven;

[0052] weaving the labels;

[0053] cutting the woven labels by means of an automatic cutting machine;

[0054] packaging the cut labels.

[0055] This method enables woven labels to be obtained which have a variable 2D code (obtained from the first list), with the aforementioned advantages.

[0056] Advantageously, the identifiers are unique and the method comprises, between the cutting step and the packaging step, a step for automatically and individually checking the unique identifier, in order to verify the legibility of the unique identifier of each of the labels, and:

[0057] in the event of compliance of the check, the label is automatically transferred in order to be packaged; or

[0058] in the event of non-compliance of the check, the label is discarded so that it is not packaged.

[0059] In this manner, manufacturing defects which may have occurred and which impair the legibility of the label will be detected, and only legible labels will be delivered to customers.BRIEF DESCRIPTION OF THE DRAWINGS

[0060] FIG. 1 is a photograph of labels, with one corresponding to the invention.

[0061] FIG. 2 is an illustration of a weave pattern for a Jacquard weave.

[0062] FIG. 3 is an illustration of a two-dimensional code encoding a first identifier, and of the first identifier.

[0063] FIG. 4 is an illustration of a two-dimensional code encoding a second identifier, and of the second identifier.

[0064] FIG. 5 is an illustration of a two-dimensional code encoding a third identifier, and of the third identifier.

[0065] FIG. 6 is an illustration of a two-dimensional code encoding a fourth identifier, and of the fourth identifier.

[0066] FIG. 7 is a diagram illustrating interlacing points of a brocade weave of a label according to the invention.

[0067] FIG. 8 is a diagram illustrating additional interlacing points of this brocade weave.

[0068] FIG. 9 is a diagram illustrating other additional interlacing points of this brocade weave.DETAILED DESCRIPTION OF THE INVENTION

[0069] With reference to FIG. 1, the invention principally concerns a Jacquard woven label (1) having a two-dimensional code (2). In the remainder of the document, reference will be made to a QR code (2), without this being limiting.

[0070] The woven labels (1) are mainly intended for the apparel, ready-to-wear, textile and clothing market. In this field, the label dimension (1) rarely exceeds 8 cm per side. Most often, the width of the labels (1) is between 10 and 50 millimetres, and their visible length is comprised between 4 and 8 cm.

[0071] A QR code (2) for the aforementioned markets thus has a width which is typically between 9 mm and 25 mm, or between 10 mm and 20 mm or even between 10 mm and 15 mm for labels (1) with smaller dimensions.

[0072] In a particular embodiment, the width of the QR code (2) is between 12 and 16 mm, without counting a possible silent zone bordering the QR code (2) and making it easier to read by a device such as a smartphone. This value is a satisfactory compromise between the legibility of the QR code (2), the quantity of information it can encode, and the most common label widths (1). This dimension therefore constitutes a standard adapted to the markets concerned.

[0073] When a label (1) of this type has a QR code (2), the dimensions of the code are therefore limited by the dimensions of the label. On the other hand, the content of the QR code (2) depends on the encoded information.

[0074] In this case, the more information a QR code (2) must encode, the more square modules (or pixels) it must include. It follows that for a QR code (2) with imposed dimensions, the larger the quantity of information to be encoded, the smaller the dimension of the pixels of the QR code (2).

[0075] There may therefore be an incompatibility between the necessary resolution of the QR code (2) (based on its maximum dimension and on the quantity of information to be encoded) compared with the resolution of the Jacquard weave (which is defined by the contexture and by the fineness of the yarns used):

[0076] Using yarns which are too big means that the resolution needed to weave the code (2) cannot be obtained.

[0077] Using a contexture which is too loose produces a flexible fabric on which the QR code (2) can be deformed and is therefore not very legible.

[0078] Weaving pixels which are too small causes too many intersections, which are too dense, so that the fabric can be deformed during weaving, which complicates the legibility of the code. Or in fact it might not be possible to weave the label (1) because there are jams on the weaving loom.

[0079] The invention essentially resides in the fit found between the fineness of the yarns and the contexture of the label.

[0080] In the first embodiment:

[0081] the warp yarn density of the label (1) is comprised between 38 and 70 yarns per cm;

[0082] the warp yarns of the label (1) have a fineness comprised between 55 and 105 dtex;

[0083] the weft yarn density of the label (1) is comprised between 65 and 120 yarns per cm;

[0084] the weft yarns of the label (1) have a fineness comprised between 20 and 65 dtex. In particular, the weft yarns may comprise ground yarns and stitch yarns with different finenesses, selected from:

[0085] first yarns, with a fineness comprised between 20 and 40 dtex; and

[0086] second yarns, with a fineness comprised between 35 and 65 dtex.

[0087] In the second embodiment:

[0088] the warp yarn density of the label (1) is comprised between 75 and 140 yarns per cm;

[0089] the warp yarns of the label (1) have a fineness comprised between 40 and 72 dtex;

[0090] the weft yarn density of the label (1) is comprised between 64 and 96 yarns per cm;

[0091] the weft yarns of the label (1) have a fineness comprised between 20 and 100 dtex. In particular, the weft yarns may comprise ground yarns and stitch yarns with different finenesses, selected from:

[0092] first yarns, with a fineness comprised between 20 and 40 dtex; and

[0093] second yarns, with a fineness comprised between 35 and 65 dtex; and

[0094] third yarns, with a fineness comprised between 55 and 100 dtex.

[0095] The choice of one embodiment or the other is principally based on the desired warp yarn density range, which requires a particular construction of the weaving loom (size and arrangement of the Jacquard mechanics, position of the harnesses, tooth density of the reed, preparation of the beam).

[0096] The selection of the range of warp yarn densities means that weave contextures which have a greater or lesser tightness can be obtained. The selection of the other parameters (warp and weft fineness, weft density) is then carried out.

[0097] Such choices of contexture and fineness provide a fabric which is rigid enough to ensure the legibility of the code, and has a resolution which is suitable for a QR code weave.

[0098] Advantageously, the first embodiment is implemented in accordance with the following preferred selections:

[0099] the warp yarn density of the label (1) is comprised between 45 and 65 yarns per cm, or between 50 and 60 yarns per cm, or between 52 and 57 yarns per cm, and is equal, for example, to 54 yarns / cm;

[0100] the warp yarns of the label (1) have a fineness comprised between 65 and 95 dtex, or between 72 and 88 dtex, or between 76 and 84 dtex and is equal, for example, to 80 dtex;

[0101] the weft yarn density of the label (1) is comprised between 75 and 110 yarns per cm or between 83 and 100 yarns per cm, or between 87 and 97 yarns per cm, and is equal, for example, to 92 yarns / cm;

[0102] the weft yarns of the label (1) have a fineness comprised between 25 and 60 dtex, or between 27 and 55 dtex, or between 29 and 53 dtex, and are equal, for example, to 50 dtex. In particular, the weft yarns may comprise ground yarns and stitch yarns of different finenesses, selected from:

[0103] first yarns, with a fineness comprised between 24 and 36 dtex, or between 27 and 33 dtex, or between 29 and 32 dtex, and equal, for example, to 30 dtex; and

[0104] second yarns, with a fineness comprised between 40 and 60 dtex, or between 45 and 55 dtex, or between 48 and 53 dtex, and equal, for example, to 50 dtex.

[0105] Advantageously, the second embodiment is implemented in accordance with the following preferred selections:

[0106] the warp yarn density of the label (1) is comprised between 86 and 130 yarns per cm, or between 97 and 120 yarns per cm, or between 103 and 113 yarns per cm, and is equal, for example, to 108 yarns / cm;

[0107] the warp yarns of the label (1) have a fineness comprised between 44 and 66 dtex, or between 50 and 60 dtex, or between 52 and 58 dtex and is equal, for example, to 55 dtex;

[0108] the weft yarn density of the label (1) is comprised between 64 and 96 yarns per cm or between 72 and 88 yarns per cm, or between 76 and 84 yarns per cm, and is equal, for example, to 80 yarns / cm;

[0109] the weft yarns of the label (1) have a fineness comprised between 24 and 90 dtex, or between 27 and 84 dtex, or between 29 and 80 dtex, and is equal, for example, to 50 dtex. In particular, the weft yarns may comprise ground yarns and stitch yarns with different finenesses, selected from:

[0110] first yarns, with a fineness comprised between 24 and 36 dtex, or between 27 and 33 dtex, or between 29 and 32 dtex, and equal, for example, to 30 dtex; and

[0111] second yarns, with a fineness comprised between 40 and 60 dtex, or between 45 and 55 dtex, or between 48 and 53 dtex, and equal, for example, to 50 dtex; and optionally

[0112] third yarns, with a fineness comprised between 60 and 90 dtex, or between 68 and 84 dtex, or between 72 and 80 dtex, and equal, for example, to 76 dtex.

[0113] In one particular embodiment, the label (1) has variable data. This means that within the same manufacturing batch of labels, not all have the same code. This is employed in several situations:

[0114] serialization of label (1) with a unique code (2), so that it can be used in traceability or authentication applications;

[0115] traceability of manufacturing batches, in which several labels (1) have an identical code (2) corresponding to a family of articles, for example the same garment model (model, colour, size).

[0116] Examples of variable data label manufacturing batches are given below.

[0117] Table 1 illustrates the principle for a manufacturing batch in which each label (1) has a unique identifier (composed here of eight alphanumeric characters).TABLE 1IncrementIdentifier1BMPRPQBY24AT3ZYZM3JD7PFAQ74YEQDN7F35NBDEE39B65RZBCP5B71PFQE6E68Z51W0Z0A9YDU73UUG10543FND1D

[0118] Table 2 illustrates the principle for a manufacturing batch in which each label (1) has an internet address (“URL”, as in the English “Uniform Resource Locator”). In particular, each URL is unique.TABLE 2IncrementURL1https: / / sklbl.fr / BMPRPQBY2https: / / sklbl.fr / 4AT3ZYZM3https: / / sklbl.fr / JD7PFAQ74https: / / sklbl.fr / YEQDN7F35https: / / sklbl.fr / NBDEE39B6https: / / sklbl.fr / 5RZBCP5B7https: / / sklbl.fr / 1PFQE6E68https: / / sklbl.fr / Z51W0Z0A9https: / / sklbl.fr / YDU73UUG10https: / / sklbl.fr / 543FND1D

[0119] Table 3 illustrates the principle for a manufacturing batch in which 13 garment labels (1) must be manufactured, several labels (1) possibly having the same identifier.TABLE 3ModelColourSizeIdentifierQtyPullover NTI1823BLUE42BMPRPQBY2Pullover NTI1823BLUE444AT3ZYZM4Pullover NTI1823WHITE42JD7PFAQ73Pullover NTI1823WHITE44YEQDN7F31Pullover NTI1823RED42NBDEE39B2Pullover NTI1823RED445RZBCP5B1

[0120] In each case, the identifiers and URLs are encoded by a QR code.

[0121] From an industrial point of view, it is not possible to individually pattern each of these variable data labels manually, even with the use of dedicated software. In the case of variable data, weave patterning of the fixed data, i.e., the bottom of the label, and any brand logo is carried out manually. In contrast, the variable data of the label (1) are processed by automated weave patterning software.

[0122] FIG. 2 illustrates an extract from a weave pattern. It shows a representation of the interlacing points of the warp and weft yarns constituting the label. The higher the density of warp and / or weft yarns, the more yarn interlacing points there are. The same applies to the resolution of the QR code (2): the greater the quantity of information to be encoded, the greater the resolution, as explained above.

[0123] When a batch of labels (1) with variable data is put into production, there is therefore a risk that certain variable data might correspond to too great a volume of data, which could result in labels (1) which cannot be manufactured or read. Because the weave patterning is automated, these labels (1) would not be detected.

[0124] To overcome this disadvantage, the identifier encoded by the QR code (2) comprises a restricted number of characters. In a preferred embodiment, the identifier is encoded on eight alphanumeric characters. This number of characters provides several billion possibilities, which is more than enough in the technical field in question. However, this restricted number of characters ensures that the resolution of the QR code (2) will not exceed what is acceptable from the weaving point of view.

[0125] The different alphanumeric characters are not encoded with the same quantity of data; it depends on their coding format:

[0126] as an example, in the “ASCII” coding table, as in the English acronym for “American Standard Code for Information Interchange”, a character is encoded on 1 byte;

[0127] in the “UTF-8” coding table, as in the English acronym “Universal Character Set Transformation Format-8 bits”, a character can be coded on 4 bytes.

[0128] Thus, the character A is encoded on a single byte in ASCII; whereas it is encoded on 4 bytes in UTF-8.

[0129] In order to limit the quantity of data needed to encode the code, it only includes characters from the ASCII table. The ASCII table comprises fewer characters than other tables, however the number of available characters is sufficient to obtain, for example, several thousand billion unique identifiers with 8 characters.

[0130] The woven label generally presents the identifier in alphanumeric form, in order to overcome difficulties in reading the QR code (2), or simply to allow it to be read with the eye.

[0131] In order to prevent misreading or reading errors, characters which are visually too close are avoided. As an example, the number 0 and the letter O, or the number 1 and the letter I are easily confused.

[0132] Preferably, the alphanumeric characters are therefore selected from a reduced list, comprising the following characters: A, B, C, D, G, H, J, N, P, S, T, W, Z, a, b, d, e, f, h, k, m, r, t, x, y, 2, 3, 4, 5, 7, 8, 9.

[0133] Selecting the characters from a predetermined list therefore enables:

[0134] the volume of data needed to encode the code to be limited, as characters can be encoded in accordance with a more character-light coding standard;

[0135] misreading or difficulties with reading to be avoided when a user attempts to read the woven identifier in alphanumeric form.

[0136] Although the number of available characters is more limited, this list makes it possible to generate more than 100 billion unique 8-character identifiers.

[0137] In one embodiment, the QR codes (2) encode an alphanumeric string which comprises a unique identifier in accordance with the aforementioned characteristics. As an example, it may be a URL.

[0138] Even if the alphanumeric string is longer, it is still possible to control the density of the QR code (2) within the manufacturing batch, because the variability of the quantity of information to be encoded is controlled in the same way as explained above.

[0139] Advantageously, the encoded URLs may be shortened URLs (fewer characters, therefore less data to be encoded), pointing to URL redirections, which are longer (more characters, therefore more data to be encoded).

[0140] With reference to FIGS. 3 and 4, two QR codes (2) are shown, each encoding an eight-character alphanumeric code. It should be noted that the quantities of data necessary to encode these two identifiers are close enough for the QR codes (2) to have the same resolution. In this case, they each comprise 21 pixels per side.

[0141] With reference to FIGS. 5 and 6, two identifiers are shown in the form of URLs, each comprising eight characters. It should be noted that because the quantity of encoded information is greater than for the identifiers of FIGS. 3 and 4, the resolution of the QR codes (2) has also increased: each of these QR codes (2) now comprises 25 pixels per side. In the case of QR codes (2) with a fixed size (for example 12 mm), the QR codes (2) of FIGS. 5 and 6 have smaller pixels than the QR codes (2) of FIGS. 3 and 4.

[0142] However, the two URLs encoded in FIGS. 5 and 6 comprise a similar quantity of information, in a manner such that the two QR codes (2) have the same resolution.

[0143] FIG. 7 illustrates a Jacquard weave with two weft yarns: a ground yarn (F) and a stitch yarn (B):

[0144] the ground yarn (F) is woven according to a 3-thread twill type weave: it passes over three warp yarns (C1, C2, C3), then passes under a warp yarn (C4), then again passes over three warp yarns (C5, C6, C7) and so on.

[0145] the stitch yarn (B) is not intended to be visible at this level of the label (1), and is therefore on the back (V) of the label.

[0146] In theory, the stitch yarn (B) could be allowed to float over the entire width of the label (1), but the floats would then constitute long loops of yarn which could interfere with the manufacture of the labels. In practice, the stitch yarns (B) on the back (V) are therefore interlaced regularly, for example approximately every 10 to 20 warp yarns.

[0147] In order not to impact the ground weave, the stitch yarn (B) is interlaced in accordance with a rhythm which is a multiple, equal to, or a divider of the rhythm of the ground weave (F). In the case of the 3-thread twill (4 warp yarn rhythm), the stitch yarn (B):

[0148] is interlaced on a warp yarn (C2); then

[0149] is passed over 7 warp yarns (C3-C9); then

[0150] is interlaced on the warp yarn (C10), and so on.

[0151] The rhythm of the stitch yarn (B) is therefore 8 warp threads, which is a multiple of the rhythm of the ground weave (4 threads).

[0152] With reference to FIG. 8, it may be necessary to increase the rigidity of the label (1) without, however, departing from the aforementioned ranges of yarn density and yarn fineness. To do this, it is possible to modify the pattern of the weave in order to increase the number of thread interlacing points.

[0153] So that these additional interlacing points do not change the appearance of the label (1) from the front (R), interlacing points are only added at the level of the floats of the stitch yarns (B), on the front (R).

[0154] In the example given, the rhythm of the stitch (B) is now 4:

[0155] it interlaces with a yarn (C2),

[0156] passes over three yarns (C3-C5),

[0157] interlaces with a yarn (C6), and so on.

[0158] The rhythm of the stitch yarn (B) is then 4 threads, which is equal to the rhythm of the ground yarn (F): from the front (R), the interlacing points of the stitch (B) remain hidden by the floats of the ground yarn (F) and the appearance of the label (1) is preserved. However, the number of interlacing points has been doubled, and so has the rigidity of the label (1).

[0159] If it is necessary to increase the rigidity of the label (1) further, it is possible to make the interlacing points of the stitch yarn (B) in accordance with a rhythm which is a divider of the rhythm of the ground yarn (F).

[0160] With reference to FIG. 9, the rhythm of the stitch yarn (B) is now 2 threads. The rigidity of the label (1) is increased further.

[0161] The examples given illustrate the interlacing points at the level of floats of the ground yarn (F), but it may be any weft yarn: ground yarn (F) or stitch yarn (B).

[0162] It should be noted that it is therefore possible, by implementing the aforementioned characteristics, to weave batches of labels (1) having QR codes (2) encoding unique identifiers, in a reliable and repeatable manner, because such a large number of identifiers can be encoded (several billion possibilities), while ensuring that the quantity of information to be encoded is controlled (limited disparity in the quantity of data, which guarantees the stability of the resolution of the QR code).

[0163] The invention also concerns a method for Jacquard weaving labels with a 2D code. This method comprises the following steps:

[0164] obtaining a first list of identifiers, defining a manufacturing batch;

[0165] weave patterning the batch of labels (1) to be woven;

[0166] weaving the labels (1);

[0167] cutting the woven labels (1) by means of an automatic cutting machine;

[0168] packaging the cut labels (1).

[0169] The aforementioned technical features of the label (1) guarantee the reliability of the weave, this method making it possible to obtain batches of Jacquard woven labels (1), with a QR code (2), even when the woven data are variable.

[0170] In particular, this method is suitable for weaving a single QR code (2). In order to improve the reliability of the method, it is possible to add, between the cutting step and the packaging step, a step for automatically and individually checking the unique identifier, in order to verify the legibility of the unique identifier of each of the labels, and:

[0171] in the event of compliance of the check, the label (1) is automatically transferred in order to be packaged; or

[0172] in the event of non-compliance of the check, the label (1) is discarded so that it is not packaged.

[0173] In this manner, it is possible to deliver a batch of labels (1) the legibility of which is guaranteed for all of the labels.

[0174] Moreover, the label (1) and the method may have a different conformation from the examples given without departing from the scope of the invention, which is defined by the claims.

[0175] In particular, the two-dimensional code may have a different conformation from a QR code (2), and may be of any type suitable for the present application.

[0176] Furthermore, the technical features of the various embodiments and variations mentioned above may be combined in their entirety or only in part. Thus, the label (1) and the method may be adapted in terms of costs, functional features and performance.

Claims

1. A Jacquard woven label comprising a two-dimensional code, termed a 2D code, encoding an identifier, wherein:the warp yarn density of the label is comprised between 38 and 70 yarns per cm;the warp yarns of the label have a fineness comprised between 50 and 110 dtex;the weft yarn density of the label is comprised between 65 and 125 yarns per cm;the weft yarns of the label have a fineness comprised between 20 and 65 dtex.

2. A Jacquard woven label comprising a two-dimensional code, termed a 2D code, encoding an identifier, wherein:the warp yarn density of the label is comprised between 75 and 140 yarns per cm;the warp yarns of the label have a fineness comprised between 40 and 72 dtex;the weft yarn density of the label is comprised between 64 and 96 yarns per cm;the weft yarns of the label have a fineness comprised between 20 and 100 dtex.

3. The Jacquard woven label as claimed in claim 1, wherein the code comprises an alphanumeric string comprising between 30 and 45 characters.

4. The Jacquard woven label as claimed in claim 1, wherein the identifier is a unique identifier.

5. The Jacquard woven label as claimed in claim 1, wherein the identifier comprises an alphanumeric string, preferably composed of eight characters.

6. The Jacquard woven label as claimed in claim 5, wherein the alphanumeric string simultaneously comprises numbers and letters, preferably selected from within a predetermined list.

7. The Jacquard woven label as claimed in claim 1, wherein the 2D code has dimensions comprised between 9 and 25 mm.

8. The Jacquard woven label as claimed in claim 1, wherein the weft yarns comprise ground yarns and stitch yarns, and floats of the stitch yarns located on the back of the label are interlaced at the level of floats of weft yarns located on the front of the label in accordance with a rhythm equal to or a divider of the rhythm of the weave of the weft yarns, in order to increase the rigidity of the label.

9. A batch of Jacquard woven labels as claimed in claim 1, wherein the labels have variable data among the labels of the batch.

10. A method for manufacturing a batch of Jacquard woven labels as claimed in claim 1, wherein said method comprises the steps of:obtaining a first list of identifiers, defining a manufacturing batch;producing a weave pattern for the batch of labels to be woven;weaving the labels;cutting the woven labels by means of an automatic cutting machine; andpackaging the cut labels.

11. The method as claimed in claim 10, wherein the identifiers are unique and the method comprises, between the cutting step and the packaging step, a step for automatically and individually checking the unique identifier in order to verify the legibility of the unique identifier of each of the labels, and:in the event of compliance of the check, the label is automatically transferred in order to be packaged; orin the event of non-compliance of the check, the label is discarded so that it is not packaged.

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