EP0549757B1 - Process and installation for the manufacture of fabric tapes, in particular figured label tapes - Google Patents

Abstract

In the tape-manufacturing process proposed, a continuous web of textile fabric is first produced which has cutting zones (12a, 12b, 12c, 12d, 12e) containing fusible bonding yarns running along cutting lines (10a, 10b, 10c, 10d, 10e). The yarns in the cutting zone of the web are bonded to each other by compressing the cutting zone and/or by the action of heat on the cutting zone. Located on the outlet side of the compression device is a cutting device (18) which cuts the web (4) along the cutting lines (10a, 10b, 10c, 10d, 10e) in the cutting zones (12a, 12b, 12c, 12d, 12e) by means of cutters (20a, 20b, 20c, 20d, 20e) to produce tapes (2a, 2b, 2c, 2d). This method thus makes it possible to manufacture simply and inexpensively, from either fusible or non-fusible fabric web, tapes with non-fraying cut edges.

Description

The invention relates to a method for producing patterned label tapes and a system for carrying out the method.

State of the art

DE-A-38 15 395 discloses a method and a corresponding installation of the type mentioned at the outset, in which a broad, meltable textile web is produced, cut into strips along cutting lines by means of a hot cutting member and these are then thermally fixed. The enamel mass that occurs at the interface during the cutting process produces a relatively hard and rough bead or brow which impairs the appearance and handling of the cut strips. According to EP-A-0 389 793, attempts are made to avoid these disadvantages by folding the edge regions of the strips provided with fused 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, whereby a melt wire that is carried melts and causes the attachment. This process is relatively complicated and, in particular, there is also a relatively wide edge area which is to be regarded as a loss of textile material. This method and the plant are also unsuitable for the production of tapes which contain non-meltable threads.

From DE-A-36 08 787 it is known to produce a textile web which consists of non-meltable threads and contains additional warp threads along cutting lines provided, the melting point of which lies below the decomposition temperature of the material of the base fabric. Before cutting, the textile web is heated and pressed along the cutting areas, so that the melt warp threads melt and connect the threads of the base fabric to each other in a fray-proof manner. This is followed by mechanical cutting along the cutting lines. The disadvantage is that this method and the system are not suitable for thermal cutting, which is expressly excluded in DE-A-36 08 787.

Presentation of the invention

The object of the invention is to further improve a method and a system of the type mentioned at the outset.

• a) durch das Verfahren gemäss Anspruch 1;
• b) die Anlage gemäss Anspruch 11.

The task is solved:

• a) by the method according to claim 1;
• b) the system according to claim 11.

By heating the thermoplastic threads and / or the additional melt and / or adhesive threads to the melt and / or adhesive temperature and pressing the cut areas, the threads of the textile web are connected to each other before the thermal cutting, so that the thermal cutting only can be limited to the cutting process and does not have to take into account the otherwise usual connection of the threads. As a result, the threads no longer have to be supplied with as much energy during thermal cutting, and the brows that otherwise result from thermal cutting and welding of the threads become at least smaller, if not avoided. Fine and soft cut edges can thus be produced. The pressing of the thermally softened threads preceding the thermal cutting also results in a particularly thin cutting edge. The heat-setting downstream of the cutting process ensures that the label tapes are perfectly smoothed and free of tension even at the cutting areas.

Advantageous embodiments of the method are described in claims 2 to 10 and the system in claims 12 to 17.

The cutting area can be designed according to claim 2 as a single-layer textile, an embodiment according to claim 3 as a hollow area is more advantageous.

With regard to the arrangement of the melt and / or adhesive threads, there are various possibilities, as can be seen from claims 4 to 7.

In particular in the case of patterned textile webs, individual pattern threads are floatingly exposed in some areas, although it is still possible to fix such threads perfectly in the hollow area or cutting area according to the present method. The heat treatment on the one hand and the pressing on the other hand force the melt mass into the capillaries of the textile material of the textile web, so that floating threads are also securely fastened. Claims 8 and 9 describe different possibilities for arranging a weft thread in the hollow area.

The best results are obtained if the textile web is cut in the middle of the cutting area.

If appropriate, it may be expedient to still shape the cutting area according to claim 10 after cutting, in order to give the cutting area a round, wedge-shaped or otherwise shaped appearance, for example.

The device for forming the cutting areas can be designed according to claim 12 for forming hollow areas or insert areas.

The pressing device can be designed according to claim 13, but an embodiment according to claim 14 is more advantageous, whereby a more individual pressing of the cut areas of the textile web is possible. The pressing devices can be heated and configured as single or double rolls. Furthermore, a hammer device or a vibration device according to claim 16 is also possible for pressing the cut areas under the action of heat.

A design according to claim 17 is particularly expedient, since the cut edges of the tapes can then be additionally worked on, on the one hand to give them a special appearance or, on the other hand, to improve the performance properties.

Brief description of the drawings

Figur 1

ein Schema zur Herstellung der Bänder aus einer gewebten Textilbahn, in schaubildlicher Darstellung;

Figur 2

einen als Hohlbereich ausgebildeten Schnittbereich einer Textilbahn mit eingelegten Schmelz- und/oder Klebefäden, im Querschnitt;

Figur 3

einen als Hohlbereich ausgebildeten Schnittbereich einer Textilbahn mit eingewebten Schmelz- und/oder Klebefäden; im Querschnitt;

Figur 4

den Schnittbereich der Figur 2 nach dem Pressen unter Wärmeeinwirkung;

Figur 5

den Schnittbereich der Figur 3 nach dem Pressen unter Wärmeeinwirkung und Zerschneiden;

Figur 6

einen als Einlagengewebe ausgebildeten Schnittbereich mit eingewebten Schmelz- und/oder Klebefäden, im Querschnitt;

Figur 7

den Schnittbereich der Figur 6 nach dem Pressen unter Wärmeeinwirkung;

Figur 8

eine Anlage zur Herstellung von Bändern, im Vertikalschnitt;

Figur 9

eine thermische Schneidvorrichtung für die Anlage der Figur 8, im Vertikalschnitt;

Figur 10

eine heizbare Pressvorrichtung für einen Hohlbereich für die Anlage der Figur 8, im Vertikalschnitt und in grösserem Massstab;

Figur 11

eine heizbare Pressvorrichtung für ein Einlagentextil für die Anlage der Figur 8, im Vertikalschnitt und grösserem Massstab;

Figur 12

eine Formgebungsvorrichtung für die Anlage der Figur 8, im Vertikalschnitt und in grösserem Massstab;

Figur 13

die Formgebungsvorrichtung der Figur 12, in grösserem Massstab und in Ansicht auf die Walzen.

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 the tapes from a woven textile web, in a graphical representation;

Figure 2

a sectional area of a textile web formed as a hollow area with inserted melt and / or adhesive threads, in cross section;

Figure 3

a cut area of a textile web formed as a hollow area with woven melt and / or adhesive threads; in cross section;

Figure 4

the cutting area of Figure 2 after pressing under the action of heat;

Figure 5

the cutting area of Figure 3 after pressing under the action of heat and cutting;

Figure 6

a cross-section of a cut area formed as an interlining fabric with woven-in melt and / or adhesive threads;

Figure 7

the section of Figure 6 after pressing under the action of heat;

Figure 8

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

Figure 9

a thermal cutting device for the system of Figure 8, in vertical section;

Figure 10

a heatable pressing device for a hollow area for the system of Figure 8, in vertical section and on a larger scale;

Figure 11

a heatable pressing device for a single-layer textile for the system of Figure 8, in vertical section and on a larger scale;

Figure 12

a shaping device for the system of Figure 8, in vertical section and on a larger scale;

Figure 13

the shaping device of Figure 12, on a larger scale and in view of the rollers.

Ways of Carrying Out the Invention

Figure 1 shows a schematic representation of the production of tapes 2a, 2b, 2c, 2d 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 7. The textile web 4 consists of warp threads 6 and integrated weft threads 8, the manufacture being such that cut regions 12a, 12b, 12c, 12d, 12e are formed along cutting lines 10a, 10b, 10c, 10d, 10e, which are formed with melting and / or adhesive threads 14a, 14b are provided. The textile web produced in this way is fed to a pressing device 16, on which the cutting areas 12a, 12b, 12c, 12d, 12e are pressed together and heated in such a way that the melt and / or adhesive threads 14a, 14b, 14c melt and the melt mass in adjacent areas of the Diffuse the textile web and thereby connect the threads of the textile web with each other. In a further process step, the textile web pretreated in this way is fed to a cutting device 18, which has cutting elements 20a, 20b, 20c, 20d, 20e, which are heated and cuts the pretreated textile web 4 along the cutting lines 10a, 10b, 10c, 10d, 10e, so that the individual strips 2a, 2b, 2c, 2d are separated from one another by cutting lanes 22.

The structure of the textile web can, for example, be designed according to FIG. 2, warp threads 6 being held together by weft threads 8 and forming a base fabric 24. A hollow fabric part 28 with further warp threads 30 is formed by means of further weft threads 26. Melting and / or adhesive threads 14a can be inserted in the hollow region 12 defining the cutting region, which melt during the pressing and under the influence of heat connect the other threads of the textile web to one another, as can be seen from FIG. 4. FIGS. 2 and 4 also show weft threads 32 which are used for patterning and run through the hollow area 12.

FIGS. 3 and 5 show a textile web 4a, the base fabric of which is again formed from warp threads 6 and weft threads 8. A cutting area 34 is again formed by a hollow fabric part 38 lying on the back of the base fabric 36. In this example, melt and / or adhesive threads 14b are woven into the fabric instead of individual normal warp threads 6 on both sides of the hollow area 34. While in the example of FIG. 2 the melt threads can be fed independently of the warp threads, the melt threads 14b are guided in warp thread fashion in the case of the fabric of FIG. In the example of FIG. 3, a weft thread 40 serving for patterning is also visible, which is guided over the hollow area 34. After pressing under the influence of heat, the melting and / or adhesive threads 14b melt and form melting regions 42 which connect the other threads to one another.

FIGS. 6 and 7 show a textile web 4b, the cutting areas 41 of which are designed as a single-layer woven fabric part. Warp threads 6 and weft threads 8 in turn form a base fabric 43, in which weft threads 40 serving for patterning are incorporated. Instead of normal warp threads 6, melt and / or adhesive threads 14c are integrated in the cutting area 41, which melt by pressing under the action of heat and form melting areas 42 which securely connect the adjacent threads with one another, so that the cutting area 41 can be cut along the cutting line 10 and which threads influenced by the cut are secured.

FIG. 8 shows a system for carrying out the manufacturing process for tapes indicated in FIG. 1. The attachment contains a weaving area 44 with warp threads 6 and melt and / or adhesive threads guided on strands 46, as a result of which they form a shed 48 into which a weft thread 8 is inserted and struck on a selvedge 52 by means of a reed 50. The control of the weaving machine is selected in a known manner so that hollow areas are created in the textile web along the intended cutting lines. A fabric hold-down device 54 is used to guide the woven textile web 4 to a goods take-off device 56. This contains a first deflecting roller 58, a take-off roller 60 and further deflecting rollers 62, 64, which guide the cut strips 2 to a goods tree (not shown) on which they are wound . The goods take-off device also contains a heat setting device 66 with a heated shoe 68 which can be pressed against the belts.

A press device 16, which has a lower roller 70 and an upper roller 72, is arranged between the goods hold-down device 54 and the goods take-off device 56. The latter is mounted on extension arms 74, which are pivotally articulated on a holder 76, which in turn is fastened to a carrier 78 which crosses the textile web. A spring 80 serves to bias the upper roller 72 against the lower roller 70. The upper roller 72 is heated by means of a heater 82.

Instead of the pressing device shown in FIGS. 1 and 8 with rolls 70, 72 that extend over the entire width, the pressing device can also be designed according to FIGS. 10 and 11 and have two separate rolls 88, 90 for each cutting line or cutting area, of which for example the Upper roller 88 is provided with a heater 92 which is arranged in the form of a heating cartridge in the shaft 94 of the roller 88.

In the example of Figure 10, the pressing device processes a textile web according to Figures 2 and 4, i.e. with a cutting area designed as a hollow area. In FIG. 11, a textile web 4b according to FIGS. 6 and 7 is pressed, i.e. with a cutting area 41 designed as an interlining textile.

FIG. 9 shows in a separate representation a cutting device 18 arranged between the pressing device 16 and the goods take-off device 56, which according to the example of FIG. 1 has a cutting member 20 for each cutting line. The cutting device of FIG. 9 contains a holder 98 which is adjustably arranged on a carrier 96 reaching over the textile web and to which two arms 100, 102 are fastened, each of which carries a cutting member 20 at its end pointing counter to the running direction of the textile web. Lines 104 for supplying current to the cutting element 20 are arranged on the arms 100, 102 in order to heat the latter.

FIGS. 12 and 13 finally show a shaping device 106, which on the one hand is connected downstream of the cutting device 18 and on the other hand is connected upstream of the goods take-off device 56 and the heat setting device. This shaping device 106 is constructed analogously to the pressing device and in turn contains a holder 110 fastened to a carrier 108, so that the shaping device 106 can in each case be assigned to a cutting line 10 or a cutting alley 22. The holder 110 contains pivotable cantilever arms 112, on which press rollers 114 are arranged, which interact with a counter roller 115. A spring 116 serves to pretension the cantilever arm 112 and thus the pressing roller 114 against the counter roller 115 and thus presses the cutting areas 118 of the belts 2a, 2b guided on the counter roller 115. A heater 120 heats the press rolls 114 to support the shaping of the cutting area 118.

Claims (17)

1. Process for the production of patterned label tapes, by

   - the pattern-related weaving of a cloth run (4,4a,4b) which at least partially contains threads (6,8) of thermoplastic material, with cutting regions (12,12a,12b,12c,12d,12e,34,41,118) arranged along cutting lines (10,10a,10b,10c,10d,10e),

   - the thermal cutting of the cloth run (4,4a,4b) along the cutting lines (10,10a,10b,10c,10d,10e) into label tapes; and

   - the thermosetting of the label tapes (2,2a,2b,2c,2d) within a fabric draw-off device,

   characterized in that,
   prior to the thermal cutting, the threads of the cloth run (4,4a,4b) in the cutting regions (12,12a,12b,12c,12d, 12e,34,41,118) are brought to melting and/or adhesion temperature as a result of the heating of the thermoplastic threads (6,8) and of additional meltable and/or adhesive threads (14a,14b,14c) in the cutting regions and are joined to one another in a unravel-proof manner as a result of the pressing of the cutting regions (12,12a, 12b,12c,12d,12e,34,41,118).
2. Process according to Claim 1, characterized in that the cutting regions (41,118) are designed as a one-ply textile and are intermixed with meltable and/or adhesive threads (14c).
3. Process according to Claim 1, characterized in that the cutting regions (12,12a,12b,12c,12d,34) are designed as hollow regions (28,38).
4. Process according to Claim 3, characterized in that the meltable and/or adhesive threads (14a) are arranged loosely in the hollow region (28) of the cloth run (4).
5. Process according to Claim 3, characterized in that the meltable and/or adhesive threads (14b) are joined at least partially to the upper part (38) and/or the lower part (36) of the hollow region (34) of the cloth run (4a).
6. Process according to Claim 3, characterized in that the meltable and/or adhesive threads (14b) are contained in at least part of the hollow region (34) in the cloth run (4a).
7. Process according to one of Claims 1 to 6, characterized in that the cloth run (4,4a,4b) consists at least partially of threads (6,8) of thermoplastic material, the melting temperature of which is higher than that of the meltable and/or adhesive threads.
8. Process according to one of Claims 3 to 7, characterized in that at least one weft thread (32) passes through the hollow region (12) of the cloth run (4) on the inside, without being tied in.
9. Process according to one of Claims 3 to 8, characterized in that, at least one weft thread (40) passes across the hollow region (34) of the cloth run (4a) on the outside, without being tied in.
10. Process according to one of Claims 1 to 9, characterized in that the cutting region (118) is formed after the cutting and before the thermosetting.
11. Apparatus for carrying out the process according to one of Claims 1 to 10, characterized by the succession of at least the following components:

    a) a device (44) for the pattern-related weaving of a cloth run (4,4a,4b) with a means for forming cutting regions (12,12a,12b,12c,12d,34,41,118) along cutting lines (10,10a,10b,10c,10d,10e) and for arranging meltable and/or adhesive threads (14a,14b,14c) in the cutting regions;

    b) a device (16,16a) for heating and pressing the cutting regions (12a,12b,12c,12d,34,41,118), for joining the threads of the cutting region of the cloth run (4,4a,4b) as a result of the melting of the meltable and/or adhesive threads (14a,14b);

    c) a thermal cutting device (18) for cutting the cloth run (4,4a,4b) along the cutting lines (12a,12b, 12c,12d,34,41,118); and

    d) a thermosetting device (66) for the tapes (2,2a,2b, 2c,2d) within a fabric draw-off device (56).
12. Apparatus according to Claim 11, characterized in that the means for forming the cutting regions (12,12a, 12b,12c,12d,12e,34,41,118) is designed for the formation of hollow regions (28,38) or one-ply regions (41).
13. Apparatus according to Claim 11 or 12, characterized in that it has a pressing device (16) extending continuously over the entire width of the textile web (4,4a,4b).
14. Apparatus according to Claim 11 or 12, characterized in that it has pressing devices (16a) which can be assigned to each cutting region (12,12a,12b,12c,12d,12e, 34,41,118).
15. Apparatus according to Claim 13 or 14, characterized in that the pressing device (16) is made heatable.
16. Apparatus according to Claim 34 or 14, characterized in that the pressing device (16) can be actuated by an ultrasonic device having, for example, microvibrations in the range of 20 to 40 kHz.
17. Apparatus according to one of Claims 11 to 16, characterized in that, for each cutting line (10,10a,10b, 10c,10d,10e), it has a shaping device (106) for the cutting regions (118) of the tapes (2a,2b,2c,2e), the said shaping device (106) being located downstream of the cutting device (118) and, if appropriate, being combined with the latter.

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