TECHNICAL FIELD 0001 The invention relates to a plant for the continuous production of a printed textile tape, in particular a label tape, according to the preamble of claim 1.

PRIOR ART 0002 Many plants of the type initially mentioned are known, as, for example, from EP-B 0 532 645 and U.S. Pat. No. 5,079,980. Particularly from the latter, it is known to print a textile tape on two sides, the plant sic being supplied to a first printing station for printing the first tape side and to a second printing station for printing the second tape side of the textile tape. By two printing stations being arranged, each with a printing head, the plant is relatively costly, since the printing heads also belong to the costly components of the plant, with the result that the printing of the textile tape is correspondingly costly, this being a disadvantage for mass products, such as label tapes.

PRESENTATION OF THE INVENTION 0003 The object of the invention is to improve a plant of the type initially mentioned, in such a way that a cost-effective production of printed textile tapes, in particular label tapes, is possible. 0004 The set object is achieved by means of the characterizing features of claim 1. 0005 Since the plant is designed in such a way that it can print not only one tape side of the textile tape, but selectively also the second tape side of the textile tape by means of the same printing head, a highly cost-effective plant is obtained, which allows a cost-effective production of printed textile tapes, this being particularly important especially for label tapes. 0006 Advantageous embodiments of the plant are described in claims 2 to 26. 0007 It is particularly advantageous when, according to claim 2, the printing head is assigned a check sensor which checks the print to be produced and, in the event of a fault, transmits a fault signal to the control device in order to stop the plant. Such a faulty print may occur, for example, when, in the case of an ink-jet printer, individual printer nozzles fail and therefore do not print. 0008 The printing of the first and second tapes sides of the textile tape, although taking place in one operation, is preferably phase-shifted according to claim 3, since, after the printing of the first tape side, the textile tape has to be supplied with the second tape side to the printing station again. In this case, according to claim 4, the second tape side of the textile tape can be moved past the printing head in the same running direction as the first tape side or, according to claim 5, in the opposite running direction to the first tape side. In order to implement this renewed supply of the textile tape, the plant according to claim 6 contains a turning station which may be designed in very different ways. Thus, according to claim 7, the turning station may have a device for turning the textile tape about a longitudinal axis of the textile tape. According to claim 8, it is also possible to have a turning station which makes it possible to turn the textile tape about a transverse axis. For this purpose, according to claim 9, the turning station may have a turning member arranged transversely to the running direction. An embodiment of the plant according to claim 10 is particularly preferred, the turning station having deflecting rollers which are arranged crosswise and which allow a particularly exact orientation of the textile tape with respect to the printing station. 0009 There are very varied possibilities for the design of the printing station, depending on which printing method is employed and whether single-color or multicolor printing is carried out. In this context, only printing machines which allow electronic data processing and operate at a correspondingly high speed come under consideration. According to claim 11, an ink-jet printer is particularly preferred, which may be of single-color or multicolor design and in which the individual characters are composed in a mosaic-like manner from very fine jet droplets. This also makes it possible, in particular, to have a relatively small printing head which, according to claim 12, can be designed to move back and forth transversely over the textile web sic. According to claim 13, such an ink-jet printer may be designed for the processing of water-based printing inks. An embodiment according to claim 14 for the processing of printing inks polymerizing by UV light is more advantageous. 0010 It is also particularly advantageous to have an embodiment of the printing station according to claim 15 as a laser printer, in which a laser beam controlled in direction in a programmed manner writes the characters onto an electrostatically precharged semiconductor photo film. The charge image which occurs is transferred with the aid of toner particles from the printing drum covered with the film onto the textile tape. 0011 In the simplest instance, the printing station can print in one color, but an embodiment according to claim 16 as a multicolor printer is also more advantageous. 0012 According to claim 17, the printing station is followed by at least one fixing station for the print. The design of the fixing station depends on the printing principle used. 0013 In this case, it is necessary, in particular, to ensure that fixing takes place as quickly as possible and that the print is as resistant as possible. In particular, a fixing station based on UV light is suitable for polymerizing printing inks. For laser printers operating with toner, it is preferable to have an IR fixing station which delivers the necessary heat for fusing the toner particles on the textile tape. In the latter instance, it is advantageous to have an additional press station according to claim 18, which imprints the print into the textile tape and thus improves the bond. 0014 It is advantageous, further, that the plant according to claim 19 has a tape fixing station for the printed textile tape, in order to free the textile tape of stresses and smooth it. 0015 An embodiment of the plant according to claim 20 is particularly advantageous, whereby the printing station is followed by a coating station, in order to provide the printed textile tape with a protective layer. Such a protective layer protects the print on the textile tape against mechanical and chemical stress. 0016 A design of the plant according to claim 21 is particularly advantageous, making it possible to process a textile web, the width of which is preferably larger by a multiple than the width of the textile tape to be printed. Consequently, the initial material can be an efficiently produced wide textile web, from which printed textile tapes of the desired width can then be produced. Various possibilities are afforded for this purpose. Claim 22 describes a particularly advantageous embodiment of the plant which is suitable particularly for larger batches of printed textile tapes. An embodiment of the plant according to claim 23 is particularly suitable for smaller batches, in which case the textile tape of desired width which is to be printed can be cut off from a stock roll of larger width and printed. The rest of the textile web is then supplied again to a reception device, preferably a reception roll. 0017 The production capacity of a plant can also be further increased in that, according to claim 24, the printing station is designed in such a way that at least two longitudinal strips can be printed on the textile tape, the printing station being followed by a longitudinal-cutting station, in order to cut the textile tape into textile tapes corresponding to the printed longitudinal strips. 0018 To improve the quality of the printed textile tapes produced, the plant may be provided with a folding station according to claim 25, in order to fold the edge regions of the printed textile tape against one another and thereby place an ugly or rough cut edge away from the edge region toward the inside. The fold can be fixed permanently by means of a fixing station following the folding station. 0019 The printed textile tape can either be rolled up or be deposited in a tangled state in a container. It is more advantageous, however, to have a design of the plant according to claim 26, whereby there is a cross-cutting station, in order to subdivide the printed textile tape into portions. This cross-cutting station may advantageously be followed by a stacking device, in order to pick up the textile tape portions in ordered form.

BRIEF DESCRIPTION OF THE DRAWINGS 0020 Exemplary embodiments of the invention are described in more detail below with reference to diagrammatic drawings in which: 0021 FIG. 1 shows a diagrammatic illustration of a first plant for the continuous production of a printed textile tape, in particular a label tape; 0022 FIG. 2 shows a plan view of the plant of FIG. 1; 0023 FIG. 3 shows a side view of the plant of FIG. 1; 0024 FIG. 4 shows the plant according to FIG. 2, in which, however, the textile tape is printed on only one side on one side of the plant; 0025 FIG. 5 shows a side view of a further plant for the continuous production of a printed textile tape, in particular a label tape, from a textile web of larger width; 0026 FIG. 6 shows a plan view of a detail of a printed textile tape; 0027 FIG. 7 shows a diagrammatic illustration of a detail of the plant of FIGS. 1 to 3 with modified turning station.

WAYS OF IMPLEMENTING THE INVENTION 0028 FIGS. 1 to 3 show a first plant for the continuous production of a printed textile tape, in particular a label tape. The plant has a delivery device 2, in which a stock roll 6 of a textile web 8 is arranged on a shaft 4. The textile web 8 is led via a straightening device 10 to a printing station 12. The straightening device 10 contains two rollers 14, 16, over which the textile web 8 is led in a meander-shaped manner. The straightening device 10 serves for holding the textile web 8 constantly in an exact position with respect to the printing station 12. Arranged upstream of the printing station 12 is a first longitudinal-cutting station 18 which subdivides the textile web 8 into two textile tapes 24, 26 by means of a cutting element 20, for example in the form of an electrically heated fuse wire 22. These textile tapes run with a first tape side 27 through a common printing station 12 with a printing head 28 which is moveable back and forth transversely to the textile tapes 24, 26 along a bearer 29. The printing head 28 is designed preferably as an ink-jet printer which prints the textile tapes 24, 26 with a polymerizable ink. The printing station 12 is followed by a fixing station 30 which fixes the print by polymerization by means of UV light. The textile tapes 24, 26 are supplied to turning stations 34A, 34B by means of deflecting rollers 32A, 32B. 0029 The turning stations contain turning members 36, 38, for example bars or rollers, which are arranged crosswise. At the first turning member 36, the textile tapes 24 or 26 are first deflected through 90 toward the second turning member 38 and are led back at the latter, again through 90, parallel to the textile web 8 of the printing station 12, so that the textile tapes 24 or 26 run through the printing station 12 with a second tape side 40 in the opposite direction to the first tape side 27. The second tape side 40 is then printed in one operation at the same printing station 12 by means of the same printing head 28, the print of the second tape side 40 being phase-shifted with respect to the print of the first tape side 27. The second tape side 40 is then likewise supplied to the same fixing station 30 which also serves for fixing the print of the first tape side. 0030 After the printing of the first tape side 27 and second tape side 40 of the textile tapes 24, 26, these can be further processed as desired. In the simplest instance, the textile tapes 24, 26 can be rolled up on stock rolls or be subdivided into portions in a way not illustrated. FIGS. 1 to 3 show further processing possibilities, thus, downstream of the fixing device 30, the textile tape 24 is once again subdivided at a second longitudinal-cutting station 42 into textile tapes 24A, 24B, 24C of smaller width which are subdivided into textile tape portions 46 at a cross-cutting station 44 and stacked in a stacking device 48. The longitudinal-cutting station 42 contains cutting elements 20 designed as fuse wires 22. The cross-cutting station 44 is equipped with a cutting knife 50 moveable transversely to the running direction. 0031 The textile tape 26 on the other side of the plant is likewise supplied to a longitudinal-cutting station 52, at which it is subdivided into two textile tapes 26A, 26B by means of a cutting element 20 in the form of an electrically heated fuse wire 22. The longitudinal-cutting station 52 is followed by a folding station 54, at which the edge regions 56 of the textile tapes 26A, 26B are folded against one another. In a following tape fixing station 58, the form of the folded tapes is fixed. For this purpose, the fixing station has a heating roller 60 and two press rollers 62 which press the folded tapes against the heating roller 60. In a following cross-cutting station 44, the textile tapes 26A, 26B thus folded are cut once more into textile tape portions 64 which are stacked in a stacking device 48. 0032 For controlling the plant, there is an electronic control device 66 which, in particular, controls the printing station 12 together with the printing head 28 and also coordinates the remaining components of the plant with one another. 0033 FIG. 4 shows the plant of FIGS. 1 to 3, but, here, the right part of the plant downstream of the printing station 12 is displaced transversely to the running direction of the textile tape in such a way that the textile tape 26 no longer runs through the turning station 34B, but is supplied directly to the longitudinal-cutting station 52, the following folding station 54, the tape fixing station 58 and the cross-cutting station 44 and stacking device 48. In this case, only the first tape side 27 of the textile tape 26 is printed. 0034 FIG. 5 shows a further exemplary embodiment of a plant for the continuous production of a printed textile tape, in particular a label tape. This plant has a delivery device 68 for a textile web 70 which is wound on a stock roll 72. The width of the textile web 70 amounts to a multiple of the width of the printed textile tape 74. The textile web 70, coming from the stock roll 72, runs through a straightening device 76 and then arrives at the longitudinal-cutting station 78, at which a cutting element 80 in the form of a fuse wire 82 separates a textile tape 74 of the desired width from the textile web 70. The textile tape 74 then arrives at the printing station 84, at which a printing head 86 has printing units 88A, 88B, 88C arranged one behind the other for different colors. In this case, too, this is an ink-jet printer which first prints the first tape side 90 of the textile tape 74. The printing station is followed by a check sensor 92 which monitors the printing image for faults. 0035 The printing station 84 and the check sensor 92 are followed by a fixing station 94 which has a UV region 94A and an IR region 94B. In the UV region 94A, the print is treated by UV light, for example polymerized. Fixing by means of heat treatment takes place in the IR region 94B. The fixing station 94 is followed by a turning station 96 which contains a deflecting roller 98 which is arranged transversely to the longitudinal direction of the textile tape and which leads the textile tape 74 back to the printing station 84. The textile tape 74 passes with its second tape side 100 under the printing head 86 of the printing station 84, travels through the latter in the opposite direction to the first tape side 90 of the textile tape 74 and is thus printed in a phase-shifted manner in the same operation and with the same printing station 84 by means of the same printing head 86. The textile tape 74, then printed on two sides, passes over a further deflecting roller 102 into the fixing station 94 and subsequently arrives at a draw-off device 104 which may be designed at the same time as a further tape fixing station 106. For this purpose, a roller 108 is heated. The tape fixing station 106 is followed by a cross-cutting station 110, at which the printed tape is cut by means of a cutting device 112, transversely to the running direction, into textile tape portions 114, preferably labels, which are stacked in a stacking device 116. 0036 The textile web part 118 not used is supplied via a deflecting roller 120 to a reception device 122 and is preferably wound up into a stock roll 124. 0037 FIG. 6 shows successive printed textile web portions 114 which are separated from one another by a separation region 126. At this separation region 126, all the nozzles of the printing head 86 operate simultaneously in order to clean these. A suction-extraction device 128, indicated by dashes and dots, discharges superfluous printing ink which is released. 0038 The plant of FIG. 5 again contains an electronic control device 130 which controls not only the printing station 84, but all the components of the plant, and coordinates their functions with one another. 0039 FIG. 7 shows a detail of the plant of FIGS. 1 to 3 with modified turning stations 132A, 132B. The textile tapes 24, 26 are led over first deflecting rollers 134A, 134B which are inclined at a small angle to the transverse direction of the textile tapes and thereby deflect the textile tapes 24, 26 from the original oncoming direction until they reach second deflecting rollers 136A, 136B outside the original oncoming direction of the textile tapes. Said second deflecting rollers are arranged in a similar way at an inclination such that the textile tapes 24, 26 are again deflected and oriented parallel to and in the running direction of the original oncoming textile tapes. Between the first deflecting rollers 134A, 134B and the second deflecting rollers 136A, 136B, the textile tapes are twisted about their longitudinal axis, so that, downstream of the second deflecting rollers 136A, 136B, they lie with their second tape side 40 on top. 0040 Instead of or in addition to the straightening device, the plant may be equipped, upstream of the printing station, with a sensor which senses the edge of the textile tape, in order to determine the position of the edge and accordingly determine the lateral print start on the textile tape. The print start in the longitudinal direction of the textile tape may be determined by means of markings in the textile tape, particularly when the textile tape is not neutral, but is already provided with a, for example, woven-in ground pattern. 0041 Numerous further exemplary embodiments may be envisaged, and, in particular, part versions of the exemplary embodiments may also be combined with one another. 1LIST OF REFERENCE SYMBOLS2Delivery device4Shaft6Stock roll8Textile web10Straighteningdevice12Printing station14Roller16Roller18Longitudinal-cutting station20Cutting element22Fuse wire24Textile tape24ATextile tape24BTextile tape24CTextile tape26Textile tape26ATextile tape26BTextile tape27First tape side28Printing head29Bearer30Fixing station32ADeflecting roller32BDeflecting roller34ATurning station34BTurning station36Turning member38Turning member40Second tape side42Longitudinal-cutting station44Cross-cuttingstation46Textile tapeportion48Stacking device50Cutting knife52Longitudinalcutting station54Folding station56Edge region58Tape fixingstation60Heating roller62Press roller64Textile tapeportion66Control device68Delivery device70Textile web72Stock roll74Textile tape76Straighteningdevice78Longitudinalcutting station80Cutting element82Fuse wire84Printing station86Printing head88APrinting unit88BPrinting unit88CPrinting unit90First tape side92Check sensor94Fixing station94AUV region94BIR region96Turning station98Deflecting roller100Second tape side102Deflecting roller104Draw-off device106Tape fixing station108Roller110Cross-cuttingstation112Cutting device114Textile tapeportions116Tacking device118Textile web part120Deflecting roller122Reception device124Stock roll125Print126Separation region128Suction-extractiondevice130Control device132ATurning station132BTurning station134AFirst deflectingroller134BFirst deflectingroller166ASecond deflectingroller136BSecond deflectingroller