EP0549746B1 - Process and installation for the manufacture of fabric tapes, in particular figured label tapes - Google Patents

Abstract

In the tape-manufacturing process proposed, a web of textile fabric is first produced which includes hollow zones (12) running along the cutting lines. Using a cutting device (16), the web is cut into tapes (2, 2a) along the cutting lines, by means of cutters (18), in such a way that the front-facing (36) and rear-facing (38) parts of the hollow zone (12) are not joined to each other. This method thus gives tapes with a particularly fine, clean cut edge.

Description

The invention relates to a method for producing tapes, in particular patterned label tapes, as well as a system for carrying out the method, according to the preamble of claim 15.

Processes and plants of the type mentioned at the outset are known several times, for example from EP-OS 0 389 793. In these known processes and the corresponding plant, the meltable textile web is thermally cut by means of a heated cutting element designed as a cutting wire. The enamel mass that occurs at the interface during the cutting process produces a relatively hard and rough bead or brow, which affects the appearance and handling of the cut strips. According to EP-OS 0 389 793 an attempt is made to avoid these disadvantages by folding the edge regions of the strips provided with the melting edges along fold lines parallel to the edges, which lie in a hollow region of the strips, and thereby forming folding legs, as a result of which the folding legs the adjacent surface zones of the associated strip are glued on. For this purpose, the parts lying one above the other are hot-pressed, causing a melt thread that is carried along to melt and effect the fastening. The disadvantage here is that the edge region is relatively thick, since it is formed by a folded hollow region of the textile web, ie four textile web parts lie one above the other in the edge region.

The object of the invention is to design a method and a system for producing tapes, in particular patterned label tapes, in such a way that the disadvantages mentioned are avoided.

• a) bei dem eingangs genannten Verfahren durch die kennzeichnenden Merkmale des Anspruches 1;
• b) bei der eingangs genannten Anlage durch die kennzeichnenden Merkmale des Anspruches 15.

The task is solved:

• a) in the aforementioned method by the characterizing features of claim 1;
• b) in the system mentioned at the outset by the characterizing features of claim 15.

Characterized in that the hollow areas of the textile web are arranged along the cutting lines and the cutting of the textile web takes place along the cutting lines and thus the hollow areas in such a way that the front parts e.g. Basic fabric parts and the rear parts e.g. Figure fabric parts of the hollow areas are not connected to each other, there is a soft thin cutting area at the band edges. In the case of patterned woven textile webs, the figure fabric part can be arranged backwards in the hollow area, so that the basic fabric lying in front is not affected by the cut. The cut base fabric part is characterized by a homogeneity in the colors of the base fabric, i.e. without mixing with the colors of the figure shot. The result is a band of high quality and quality.

Advantageous embodiments of the method are described in claims 2 to 14 and the system in claims 16 to 23.

The cutting areas can be improved by an embodiment according to claim 2. By shortening the rear part of the cut hollow area, the cut edge becomes softer on the back of the tape, making it practically invisible from the front, ie from the good side of the tape. The tape looks homogeneous and beautiful. The shortening of a part of the hollow area can be done most easily according to claim 3. In an embodiment variant according to claim 4, a stronger shortening is possible than in the variant according to claim 3.

The quality, in particular the fineness of the cutting areas of the strips can be further improved by an embodiment according to claim 5. The gluing can be done by applying an adhesive to the part of the hollow area to be fastened. An embodiment according to claim 6 is more advantageous, in particular by subsequently applying an adhesive or by producing the textile web with weft threads arranged at least in the hollow area, which melt as a whole when heat and / or pressure are used, and / or adhesive threads in which a Base material is provided with an adhesive layer that is activated when heat and / or pressure is applied, it is possible to process textile webs made of non-thermoplastic material. The adhesive and / or the melt and / or adhesive threads serve to solidify the cut edges and / or to fasten a folded part of the hollow area to the band part underneath. In the case of textile webs made of non-thermoplastic materials, mechanical strengthening of the edge areas after cutting is also possible.

An embodiment according to claim 7 is particularly advantageous, wherein the thermoplastic threads of the textile web enable the cutting areas to be solidified even by thermal cutting. Because the cut is made in the hollow area, the individual parts of the textile web are thinner and the resulting cutting brows are smaller and finer, so that they hardly have a disturbing effect. In particular, even in the case of a patterned band, the colors of the basic textile web practically do not impaired, since no or only extremely small mixed color areas arise that are practically imperceptible visually. This creates a smooth cutting area on the tapes. Such tapes are characterized by high quality and are practically equivalent to tapes whose edges are woven or knitted. The quality of the tapes in textile webs made of thermoplastic threads can be further improved by the measures already discussed above.

The cutting of the textile web can be carried out according to claim 8 by means of a mechanical cutting device which is used both for textile materials made of non-synthetic and synthetic, i.e. thermoplastic threads can be used. In the latter case, however, cutting according to claim 9 is more advantageous, since the cutting already provides a first or permanent solidification of the cut threads against fraying.

A further development of the method according to claim 10 is also advantageous.

The strips can also be subjected to a shaping of the cutting areas and / or a final heat setting in order to make the strips free of tension.

• Herstellung der Textilbahn
• Zerschneiden der Textilbahn in Bänder und Fixierung der Schnittbereiche
• Formgebung der Schnittbereiche
• Thermofixierung der Bänder

können einzeln räumlich und zeitlich voneinander getrennt durchgeführt werden. Besonders vorteilhaft ist jedoch, wenn die einzelnen Verfahrensschritte gemäss Anspruch 12 in einem Arbeitsgang kontinuierlich erfolgen.The individual process steps such as:

• Production of the textile web
• Cutting the textile web into ribbons and fixing the cutting areas
• Shape of the cutting areas
• Thermal fixing of the tapes

can be carried out separately, spatially and temporally. However, it is particularly advantageous if the individual method steps according to claim 12 in one operation done continuously.

In principle, it is possible to produce and use different types of textile webs, for example a textile web made from a non-woven fabric. However, the production of a knitted and in particular woven textile web according to claim 13 is particularly advantageous. Such a textile web can be patterned according to claim 14.

With regard to the system for carrying out the method, there are a wide variety of design options, some of which are specified in claims 16 to 23 or are also specified by the above method measures.

Figur 1

ein Schema zur Herstellung von Bändern aus einer gewebten Textilbahn, in schaubildlicher Darstellung;

Figur 2

einen Hohlbereich einer Textilbahn, im Querschnitt;

Figur 3

den Hohlbereich der Figur 2 beim thermischen Schneiden, im Querschnitt;

Figur 4

den geschnittenen Hohlbereich der Figur 3 beim Umlegen des rückwärtigen Teiles des Hohlbereiches, im Quer schnitt;

Figur 5

den fertigen Schnittbereich eines Bandes, im Querschnitt;

Figur 6

eine Anlage zur Herstellung von Bändern, im Vertikalschnitt;

Figur 7

eine mechanische Schneidvorrichtung, in Seitenansicht;

Figur 8

eine weitere thermische Schneidvor richtung, in Seitenansicht;

Figur 9

eine Textilbahn beim Schneiden mittels eines V-förmigen Schneidgliedes, im Querschnitt;

Figur 10

eine geschnittene Textilbahn beim Kürzen der rückwärtigen Teile eines Hohlbereiches, im Ausschnitt und im Querschnitt;

Figur 11

eine geschnittene Textilbahn im Ausschnitt und im Querschnitt.

Exemplary embodiments of the subject matter of the invention are described in more detail below with the aid of schematic drawings, in which:

Figure 1

a diagram for the production of tapes from a woven textile web, in a graphical representation;

Figure 2

a hollow area of a textile web, in cross section;

Figure 3

the hollow area of Figure 2 in thermal cutting, in cross section;

Figure 4

the cut hollow area of Figure 3 when folding the rear part of the hollow area, in cross section;

Figure 5

the finished cutting area of a tape, in cross section;

Figure 6

a plant for the production of tapes, in vertical section;

Figure 7

a mechanical cutting device, in side view;

Figure 8

another thermal Schneidvor direction, in side view;

Figure 9

a textile web when cutting by means of a V-shaped cutting member, in cross section;

Figure 10

a cut textile web when shortening the rear parts of a hollow area, in the cutout and in cross section;

Figure 11

a cut textile web in the cutout and in cross section.

Figure 1 shows a schematic representation of the production of tapes 2,2a, 2b, 2c from a textile web 4. In the present example, it is a woven textile web, the structure of which is shown in more detail in Figures 2 to 5. The textile web 4 consists of warp threads 6 and integrated weft threads 8, the manufacture being such that hollow regions 12, 12a, 12b, 12c, 12d are formed along cutting lines 10, 10a, 10b, 10c, 10d, which are provided with melt threads 14 are. The textile web thus produced is fed to a cutting device 16 which has cutting members 18, 18a, 18b, 18c, 18d, which consist for example of heated cutting wires and cut the textile web 4 along the cutting lines 10, 10a, 10b, 10c, 10d, so that the individual bands 2,2a, 2b, 2c are separated from one another by cutting lanes 20. The structure of the woven textile web 4 can, for example, be designed according to FIG. 2, warp threads 6 being held together by weft threads 8 and forming a base fabric 22. A hollow region 12 is formed by means of weft threads 24 and warp threads 26 running on the rear side of the base fabric 22. The hollow area can be mixed with additional melt threads 14. Furthermore, the textile web 4 shown in the detail contains floating weft threads 28, 30 on the back of the textile web, some of which run freely through the hollow area 12 and some of which run over the hollow area 12.

FIG. 3 shows the thermal cutting of the textile web by means of a cutting member 18 which is clamped in support arms 32, 34. The fusion cutting is carried out in such a way that the front part 36 of the carbon fabric, which is assigned to the base fabric 22, is not connected to the rear part 38 by the fusion cutting. Melt cutting results in narrow cut surfaces 40 with equally narrow brow 42 formed from the melt. After cutting, the rear parts 38 of the cut hollow areas are folded over against the center of the band of the associated band 2,2a and with the band part underneath, i.e. the base fabric is connected by hot pressing, as can be seen from FIG. 5. The hot threads melt the melt threads 14 and form a melt 44 which diffuses into the adjacent threads and connects them to one another.

FIG. 6 shows an installation for carrying out the production process for the strips 2, 2a, 2b, 2c indicated in FIG. The system contains a weaving area 46 with warp threads 6 and melt threads guided on strands 48, as a result of which they form a weaving shed 50 into which a weft thread 8 is inserted and struck on a selvedge 54 by means of a reed 52. The control of the loom is selected in a known manner so that hollow areas in the Textile web arise. A fabric hold-down device 56 is used to guide the woven textile web 4 to a thermal cutting device 16, on which the textile web 4 is cut into strips 2, which are pulled off by a goods take-off device 58 and fed to a goods tree (not shown in more detail). The goods take-off device 58 contains a first deflection roller 60, a removal roller 62 and further deflection rollers 64, 66. It is also equipped with a heat-fixing device 68. The latter contains a shoe 72 heated by means of a heater 70.

The cutting device 16 has a holder 76, which is arranged on a carrier 74 which overlaps the textile web 4 and which each contain support arms 32, 34, which carry the cutting member 18 at their front end region which points against the running direction of the textile web. The cutting device 16 is followed by a folding device 78, which folds the rear part 38 of the cut textile web against the belt center of the respective belt in accordance with the method step in FIG. The individual deflecting members 80 of the folding device 78 are connected to the holder 76 of the cutting device 16 by means of brackets 82.

The cut strips pretreated in this way are now fed to a hot press device 84 which has press rolls 88 heated for each cut area by means of a heater 86. The pressing rollers 88 which cooperate with the deflection roller 60 of the goods take-off device 58 are mounted on swivel arms 90 which are connected in an articulated manner to a holder 92 which in turn is fastened in an adjustable manner to a carrier 94 which engages over the cut strips. A spring 96 serves to pretension the pressing rollers 88 against the deflecting roller 60. By means of this hot pressing device 84, the rear parts 38 of the hollow areas 12 can be connected to the respective other belt parts, as can be seen from FIG.

FIG. 7 shows a mechanical cutting device 98 with a shear blade 102 fixed to a holder 100 and a moving shear blade 104. The latter is movably mounted on an axis 106 and is driven by a driven eccentric 108 and a coupling member 110. For each cutting line, the mechanical cutting device 98 has such a cutting tool 112 consisting of the shear blades 102, 104. The individual cutting tools are adjustably arranged on a carrier 114 which crosses the strips.

FIG. 8 shows a further thermal cutting device 116, which has a nozzle 118 for each cutting line, which receives a hot medium via a line 120, which is blown through the textile web 4 against a receiving funnel 122, as a result of which the thermoplastic textile web 4 is cut into strips 2 .

Figure 9 shows the cutting of the textile web 4 by means of a V-shaped cutting member 124. This results in a V-shaped cut, which causes the rear parts 126 of the hollow area 12 to shorten compared to the front part 128 formed by the base fabric, i.e. is set back against the middle of the band.

FIG. 10 shows a further exemplary embodiment for shortening the rear part 130 of the cut hollow region 12 of a textile web 4. For this purpose, the cutting device 132 initially contains a device 134 for erecting the rear parts 130 of the hollow region 12. For this purpose, this erecting device 134 has suction nozzles 136, which are assigned to the rear parts 130 of the cut hollow region. The cutting device 132 further includes a cutting member 140 guided on supports 138, which is designed in the form of a resistance heating wire. The rear parts 130 of the Hollow area 12 can be shortened accordingly by means of the cutting device.

FIG. 11 shows a textile web cut into bands 2, 2a, 2b, the rear parts 126 of the hollow regions 12 being cut, for example according to FIG. 9, and the rear parts 130 being shortened according to the device according to FIG. As a result, the rear parts 126, 130 are reset by the amount a 1 or a 2 from the cut surface 142 of the base fabric. FIG. 11 further shows that the individual bands 2, 2a, 2b on the good side 144 have a usable width b that is reduced by the width d of the cutting lane 146 with respect to the cutting pitch t.

Numerous further exemplary embodiments of the invention are still possible. In particular, it is possible to process textile webs made of non-synthetic material, in which case, for example, the folding device shown in FIG. 6 is expediently supplemented by means of a device for applying an adhesive between the rear part of the band and the base fabric of a band. The adhesive can then be further distributed or cured on the hot press device 84. This means that non-synthetic textile materials can also be cut and provided with fray-resistant cutting areas.

REFERENCE SIGN LIST

2nd

tape

2a

tape

2 B

tape

2c

tape

4th

Textile web

6

Warp thread

8th

Weft

10th

Cutting line

10a

Cutting line

10b

Cutting line

10c

Cutting line

10d

Cutting line

12th

Hollow area

12a

Hollow area

12b

Hollow area

12c

Hollow area

12d

Hollow area

14

Melting thread

16

Cutting device

18th

Cutting link

18a

Cutting link

18b

Cutting link

18c

Cutting link

18d

Cutting link

20th

Cutting alley

22

Base fabric

24th

Weft

26

Warp thread

28

Pattern weft

30th

Pattern weft

32

Beam

34

Beam

36

front part

38

rear part

40

Cutting surface

42

brow

44

melt

46

Weaving area

48

Strand

50

Shed

52

Reed

54

Selvedge

56

Goods retainer

58

Goods take-off device

60

Deflection roller

62

Take-off roller

64

Deflection roller

66

Deflection roller

68

Heat setting device

70

heater

72

shoe

74

carrier

76

holder

78

Folding device

80

Deflector

82

boom

84

Hot pressing device

86

heater

88

Press roll

90

Swivel arm

92

holder

94

carrier

96

feather

98

Cutting device

100

holder

102

Blade, firm

104

Blade, moved

106

axis

108

eccentric

110

Coupling link

112

Cutting tool

114

carrier

116

Cutting device

118

jet

120

management

122

Collecting funnel

124

Cutting link

126

Part, backwards

128

Base fabric

130

Part, backwards

132

Cutting device

134

Raising device

136

Suction nozzle

138

carrier

140

Cutting link

142

Cutting surface

144

Good side

146

Cutting alley

Claims (23)

1. A process for producing tapes, particularly patterned label tapes, wherein individual tapes (2, 2a, 2b, 2c, 2d) are cut along predetermined cut lines (10, 10a, 10b, 10c, 10d) from a wide textile strip (4) containing hollow regions (12, 12a, 12b, 12c, 12d) and the cut edges are protected from fraying, characterised by:

   a) producing the textile strip (4), wherein the hollow regions (12, 12a, 12b, 12c, 12d) are disposed along the cut lines (10, 10a, 10b, 10c, 10d);

   b) cutting the textile strip (4) along the cut line (10, 10a, 10b, 10c, 10d) in such a way that the front parts (36, 22, 128) and the back parts (38, 126, 130) of the hollow regions (12) are not joined to each other.
2. A process according to claim 1, characterised in that one of the two parts, preferably the back part (126, 130) of the cut hollow region (12) is laterally shortened in relation to the other part (128).
3. A process according to claim 2, characterised in that the shortening is effected by means of a cutting tool (124) placed at a slant angle transverse to the cut line (10).
4. A process according to claim 2, characterised in that the part (130) to be shortened is erected transverse to the plane of the strip after cutting and is shortened by means of a further cutting tool (132).
5. A process according to any one of claims 1 to 4, characterised in that one of the two parts (36, 38), preferably the back part (38), of the cut hollow region (12) is folded down towards the tape middle of the associated tape (2) and is joined, preferably by adhesive bonding, to the tape part below it.
6. A process according to any one of claims 1 to 5, characterised in that a textile strip (4) is produced which contains fusible and/or adhesive fibres (14), at least in the hollow region (12).
7. A process according to any one of claims 1 to 6, characterised in that a textile strip (4) is produced from thermoplastic fibres, which optionally contains fusible and/or adhesive fibres (14) in addition in the hollow region (12), the melting temperature of which fibres is less than that of the other fibres.
8. A process according to any one of claims 1 to 7, characterised in that the textile strip (4) is processed by means of a mechanical cutting device (98).
9. A process according to any one of claims 1 to 7, characterised in that the textile strip (4) is processed by means of a thermal cutting device (16, 116, 132), preferably by means of a hot cutting element (18, 18a, 18b, 18c, 18d).
10. A process according to any one of claims 1 to 9, characterised in that the fixation of the cut regions (40, 142) and/or the joining of cut parts (22, 36, 38, 126, 128, 130) of the hollow regions (12, 12, 12b, 12c, 12d) is effected by the heating and pressing of strip parts containing thermoplastic fibres (14).
11. A process according to any one of claims 1 to 10, characterised in that the tapes (2, 2a, 2b, 2c, 2d) are finally thermofixed.
12. A process according to any one of claims 1 to 11, characterised in that the individual process steps are carried out continuously in one operation.
13. A process according to any one of claims 1 to 12, characterised in that a knitted, preferably a woven, textile strip (4) is produced.
14. A process according to any one of claims 1 to 13, characterised in that a patterned knitted or woven textile strip (4) is produced, in which pattern weft threads (28, 30) floating on the back of the textile strip run freely through and/or over the hollow regions (12, 12a, 12b, 12c, 12d).
15. An installation for carrying out the process according to any one of claims 1 to 14, having an apparatus (46) for producing a textile strip (4) and having an apparatus (16, 98, 116) for cutting up the textile strip (4) along cut lines (10, 10a, 10b, 10c, 10d) into individual tapes (2, 2a, 2b, 2c, 2d), characterised in that

    a) the apparatus (46) for producing a textile strip (4) comprises a device for forming hollow regions (12, 12a, 12b, 12c, 12d) along the cut lines (10, 10a, 10b, 10c, 10d);

    b) the cutting apparatus (16, 98, 116) is constructed so that the parts (22, 36, 38, 126, 128, 130) of the hollow regions (12a, 12b, 12c, 12d) are not joined to each other on cutting.
16. An installation according to claim 15, characterised in that it comprises a mechanical cutting apparatus (98) with cutting tools (102, 104) which can be assigned to the cut lines (10).
17. An installation according to claim 15, characterised in that it comprises a thermal cutting apparatus (16) with cutting elements (18, 18a, 18b, 18c, 18d, 124) which can be assigned to the cut lines (10, 10a, 10b, 10c, 10d).
18. An installation according to any one of claims 15 to 17, characterised in that it comprises an apparatus (134) for raising cut parts (130) of the hollow regions (12) transverse to the plane of the tape and comprises a further cutting apparatus (132) for shortening the raised parts (130) of the hollow regions (12).
19. An installation according to any one of claims 15 to 18, characterised in that it comprises an apparatus (78) for folding down cut parts (38) of the hollow regions (12) towards the tape middle.
20. An installation according to any one of claims 15 to 19, characterised in that it comprises a hot pressing apparatus (84) which can be assigned to one of the cut hollow regions (12).
21. An installation according to any one of claims 15 to 20, characterised in that it comprises a shaping apparatus which can be assigned to the cut edges of the tapes.
22. An installation according to any one of claims 15 to 21, characterised in that it comprises a thermofixing apparatus (68) for the tapes (2).
23. An installation according to any one of claims 15 to 22, characterised in that it is constructed as a power weaving loom.

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