Highly abrasion-resistant technical adhesive tape with double-layer liner

Abstract

An abrasion-resistant adhesive tape (1), that can be formed into a roll, preferably a cable winding tape (1), with a strip-shaped double-layer substrate (2) with a pressure-sensitive adhesive coating (3) on one side. The substrate (2) having a first textile fabric layer (4) and a second textile fabric layer (5), being permanently connected by an adhesive connection layer (6). For a high abrasion resistance, preferably a class-E abrasion resistance according to LV 312, and enabling easy processing with a minimal thickness, the first and second textile layers (4) each have a basis weight ranging from 80 to 300 g/m.sup.2, the adhesive connection layer (6) having a basis weight ranging from 50 to 300 g/m.sup.2 and a laminate adhesive force, by DIN EN 1939, between the textile layers greater than 10 N/cm.

Claims

1. A highly abrasion-resistant adhesive tape, which can be rolled into an adhesive tape roll, for use as a cable wrapping tape, comprising: a strip-shaped double-layer substrate with a pressure-sensitive adhesive coating on one side, wherein the substrate comprises a first textile layer of a fabric and a second textile layer, the first textile layer and the second textile layer comprising polyester fibers, in the fabric of the first textile layer or in a fabric of the second textile layer warp threads or weft threads respectively have a linear density in the range of 110 dtex to 550 dtex, in the fabric of the first textile layer or in the fabric of the second textile layer the warp threads and/or the weft threads are respectively composed of a number of filaments in the range of 24 to 144, the textile layers being permanently connected to each other over their entire surface by an adhesive connection layer, wherein the fabric of the first textile layer and the fabric of the second textile layer each have a basis weight in the range of 80 g/m.sup.2 to 300 g/m.sup.2, and wherein the adhesive connection layer has a basis weight in the range of 50 g/m.sup.2 to 300 g/m.sup.2, wherein the tape has a thickness of less than 0.5 mm, an abrasion resistance according to LV 312 of at least class E, and a laminate adhesive force determined according to DIN EN 1939 between the first textile layer and the second textile layer of the substrate is greater than 10 N/cm, wherein the adhesive connection layer is comprised of a hot-melt adhesive formed of an ethyl acrylate copolymer or of an ethylene-vinyl acetate copolymer (EVA), wherein the copolymer is modified with UV-crosslinkable acrylic hardeners or polymerized UV-C photoreactive groups.

2. The adhesive tape according to claim 1, wherein the fabric of the second textile layer is the same fabric material as the fabric of the first textile layer.

3. The adhesive tape according to claim 1, wherein the fabric of the first textile layer or the fabric of the second textile layer each have a basis weight in the range of 100 g/m.sup.2 to 170 g/m.sup.2.

4. The adhesive tape according to claim 1, wherein the fabric of the first textile layer or the fabric of the second textile layer each consists of polyethylene terephthalate.

5. The adhesive tape according to claim 1, wherein the adhesive connection layer has a basis weight in the range of 80 g/m.sup.2 to 150 g/m.sup.2.

6. The adhesive tape according to claim 1, wherein the hot-melt adhesive includes an ethylene butyl acrylate or an ethylene-ethyl acrylate, wherein the acrylate is modified with UV-crosslinkable acrylic hardeners or polymerized UV-C photoreactive groups in side chains.

7. The adhesive tape according to claim 1, wherein the adhesive coating is comprised of an acrylate or acetate adhesive and the same hot-melt adhesive as the adhesive connection layer.

8. The adhesive tape according to claim 1, wherein the adhesive coating has a basis weight in the range of from 50 g/m.sup.2 to 300 g/m.sup.2.

9. The adhesive tape according to claim 1, wherein the thickness is in the range of 0.35 mm to 0.48 mm.

10. The adhesive tape according to claim 1, wherein the adhesive force on steel is in the range of 5.0 N/cm to 15.0 N/cm in a test according to DIN EN 1939.

11. The adhesive tape according to claim 1, wherein the adhesive force on the tape back is in the range of 4.0 N/cm to 15.0 N/cm in a test according to DIN EN 1939.

12. The adhesive tape according to claim 1, wherein the tape has an unwinding force in the range of 2 N to 10 N in a test according to DIN EN 1944.

13. The adhesive tape according to claim 1, wherein the tape has a tensile strength in the range of 300 N/cm to 600 N/cm, in a test according to DIN EN 14410.

14. The adhesive tape according to claim 1, wherein the tape has an elongation at break that is greater than 20% in a test according to DIN EN 14410.

15. The adhesive tape according to claim 1, wherein the tape has an abrasion resistance in the range of 7500 to 9200 strokes as determined on a 5 mm mandrel.

16. The adhesive tape according to claim 1, wherein the tape has a noise damping according to LV 312 of at least class B, and a noise damping in the range 2 dB (A) to 5 dB (A) according to LV 312.

17. The adhesive tape according to claim 1, wherein the substrate is calendered and is laminated, so that the air permeability of the fabric is less than 200 I/m.sup.2s, measured according to DIN 53 887 at a test pressure of 500 Pa.

18. The adhesive tape according to claim 1, wherein in the fabric of the first textile layer or in the fabric of the second textile layer the warp threads and the weft threads are respectively designed identically.

19. The adhesive tape according to claim 1, wherein in the fabric of the first textile layer or in the fabric of the second textile layer the warp threads or the weft threads are textured.

20. The adhesive tape according to claim 1, wherein in the fabric of the first textile layer or in the fabric of the second textile layer the warp threads and/or the weft threads are intermingled, wherein there are 82 to 96 intermingling points per meter.

21. The adhesive tape according to claim 1, wherein in the substrate there is one of the color combinations black/black, black/white, and white/white for the textile layers.

22. The adhesive tape according to claim 1, wherein the fabric of the first textile layer or the fabric of the second textile layer each have a basis weight of approximately 130 g/m.sup.2.

23. The adhesive tape according to claim 1, wherein the thickness is in the range of 0.44 mm to 0.46 mm.

24. The adhesive tape according to claim 1, wherein the adhesive force on steel is in the range of 7.5 N/cm to 9.0 N/cm in a test according to DIN EN 1939.

25. The adhesive tape according to claim 1, wherein the adhesive force on the tape back is in the range of 5.5 N/cm to 8.0 N/cm in a test according to DIN EN 1939.

26. The adhesive tape according to claim 1, wherein the tape has an unwinding force in the range of 3 N to 7 N in a test according to DIN EN 1944.

27. The adhesive tape according to claim 1, wherein the tape has a tensile strength in the range of 370 N/cm to 421 N/cm in a test according to DIN EN 14410.

28. The adhesive tape according to claim 1, wherein the tape has an elongation at break that is in the range of 23 percent to 31 percent in a test according to DIN EN 14410.

29. The adhesive tape according to claim 1, wherein the laminate adhesion force determined according to DIN 1939 between the first textile layer and the second textile layer of the substrate falls in the range of 12 N/cm to 15 N/cm.

30. The adhesive tape according to claim 1, wherein the substrate is calendered and is laminated, so that the air permeability of the fabric is in the range of 50 l/m.sup.2/s to 200 l/m.sup.2/s measured according to DIN 53 887 at a test pressure of 500 Pa.

31. The adhesive tape according to claim 1, wherein in the fabric of the first textile layer or in the fabric of the second textile layer the warp threads or weft threads respectively have the linear density of about 167 dtex.

32. The adhesive tape according to claim 1, wherein the number of filaments is about 36 filaments.

33. The adhesive tape according to claim 1, wherein the substrate comprises 45 warp threads and 25 weft threads.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Further advantageous design features of the invention are contained in the following description. The invention is explained in more detail based on the inventive exemplary embodiment illustrated by the accompanying drawing, and two comparative examples.

(2) The drawing shows an embodiment of an inventive adhesive tape in a cross-sectional view.

FURTHER DESCRIPTION OF THE INVENTION

(3) As the drawing illustrates, an inventive highly abrasion-resistant technical adhesive tape 1, in particular a cable wrapping tape 1 for an automobile, windable on itself without interliner, includes a band-shaped, double-layer substrate 2, which is provided on at least one side with a self-adhesive adhesive layer 3, which is formed of a pressure-sensitive adhesive. Known adhesives are usable here as pressure-sensitive adhesives, in particular UV-crosslinkable adhesives (with properties as presented below, for example, in Table 2), whereby these require no further modification.

(4) The support 2 includes a first textile layer 4 made of a fabric and a second textile layer 5, the two layers being permanently connected to each other across their entire surface by an adhesive connection layer 6. It is provided that the second textile layer 5 is also formed of a fabric, wherein the fabric of the first textile layer 4 and the fabric of the second textile layer 5 each have a basis weight in the range of 80 g/m.sup.2 to 145 g/m.sup.2.

(5) Preferably the fabric of the second textile layer 5 can be the same fabric as in the first textile layer 4, in particular a fabric that is formed of polyester fibers composed of up to 100 percent polyethylene terephthalate (PET). Such a fabric forms a rot-proof substrate 2 and can in particular respectively have a basis weight in the range of 90 g/m.sup.2 to 135 g/m.sup.2, preferably of 130 g/m.sup.2.

(6) The inventive adhesive connection layer 6 has a basis weight in the range of 50 to 150 g/m.sup.2, whereby here, values in the range of 70 g/m.sup.2 to 130 g/m.sup.2 are preferred.

(7) The adhesive coating 3 can in particular be formed of an acrylate or acetate adhesive, preferably a hot-melt adhesive as is also used to produce the adhesive connection layer 6. Such a hot-melt adhesive can be manufactured based on an ethyl acrylate copolymer, such as an ethylene butyl acrylate or an ethylene-ethyl acrylate, or predominantly based on an ethylene-vinyl acetate, i.e. predominantly formed of these polymers, wherein the polymers are preferably modified with UV-crosslinkable acrylic hardeners and/or can contain polymerized UV-C photo reactive groups, in particular in the side chain.

(8) Here a typical formulation can, for example, be composed of 60 percent by mass up to 96 percent by mass UV crosslinkable acrylate hardener (e.g. acResin A260 UV from the firm BASF SE, specific information thereof below in Table 2), of 2 percent by mass up to 20 percent by mass EVA (e.g. Evatane from the firm Arkema, specific information thereof in Table 3) or ethyl acrylate (e.g. Lotryl EH, a static copolymer of ethylene and 2-ethylhexyl acrylate, or Lotryl BA, a static copolymer of ethylene and butyl acrylate also of the firm Arkema, specific information for Lotryl below in Table 4) as well as of 2 percent by mass up to 20 percent by mass of a hydrogenated rosin (rosin: 2R,3S,4S,5R,6R)-2-methylol-6-[(E)-3-phenylallyloxy]tetrahydropyrane-3,4,5-triol, e.g. Foral 105-E of the firm Eastmann having specific properties according to Table 5). The latter is a thermoplastic, made from pentaerythritol and from highly stabilized, hydrogenated rosin ester hardener for adhesives and coatings. Its use offers excellent advantages in a function as a tackifier or as a modifier resin in the adhesive. Foral resin here causes an excellent resistance to oxidation and discoloration caused by heat and aging.

(9) TABLE-US-00002 TABLE 2 Specific data of a butyl-acrylate-based UV-crosslinkable acrylate with polymerized photoinitiator Unit Range Nonvolatile components % 99%-100% K-value 48-52 Color number 0-100 Viscosity Pas 40-60

(10) TABLE-US-00003 TABLE 3 Specific data of an ethylene-vinyl acetate Unit Range MFI g/10 min 2.5-1000 Melting point C. 55-90 Shore-A hardness 40-100

(11) TABLE-US-00004 TABLE 4 Specific data for ethylene-butyl acrylate or ethylene- ethyl-hexyl acrylate (Lotryl EH or BA) Unit Range MFI g/10 min 100-1000 Melting point C. 65-75 Shore-A hardness 45-75

(12) TABLE-US-00005 TABLE 5 Specific data for Foral 105-E Unit Range Melt viscosity mPas 120 C. 20,000 140 C. 2000 160 C. 410 Melting point C. 85-120 Density at 25 C. kg/dm.sup.3 1.06

(13) The parameters in the above tables were determined as follows: Non-volatile percentages according to DIN EN ISO 3251, K-value according to DIN EN ISO 1628-1, by 1% (m/v) in THF, Color number according to DIN EN 6271-2 (Hazen) Viscosity according to Viscosity Physica MC101 (oscillation) 100 1/s 130 C., Carreau-Gahleitner, Melt flow index MFI (Tables 3 and 4) according to ISO 1133 or ASTM D 1238, Melting point by differential scanning calorimetry (DSC), Shore A hardness according to ASTM D 2240, Melt viscosity according to ASTM D 3835, Density according to ASTM D 1505.

(14) Here the following should be noted: the K-value determination is a generally accepted test method for determining intrinsic viscosity, whereby the determined value is an indirect measure of the molecular weight. The color number according to DIN EN 6271 part 2 is a measure of the contamination of the butyl acrylate, which can arise during the polymerization. This parameter has only a subordinate significance with respect to the invention. The determination of the viscosity according to Physica MC 101 is an internal test method of BASF, the results of which differ in only insignificant ways from those of other comparable test methodssuch as with cone-plate systems or plate-plate systems.

(15) The adhesive coating 3 and/or the adhesive connection layer 6 can each have a basis weight in the range of approximately 50 g/m.sup.2 to 150 g/m.sup.2, preferably of 80 g/m.sup.2 to 100 g/m.sup.2. The application on the substrate can occur in a technologically advantageous manner by using the above-mentioned curtain-coating method.

(16) The determination of the basis weights of the adhesive coating 3 and/or of the adhesive connection layer 6, as well as of the two textile layers 4, 5 formed of fabric, occurs here in the usual manner according to the standard DIN EN ISO 2286-2 Rubber- or plastics-coated fabricsDetermination of roll characteristicsPart 2: Methods for determination of total mass per unit area, mass per unit area of coating and mass per unit area of substrate.

(17) With an optimally small thickness of less than 0.5 mm, preferably with a thickness in the range of 0.35 to 0.48 mm, especially preferably in the range of 0.44 mm to 0.46 mm, the inventive adhesive tape 1 here achieves an abrasion resistance according to LV 312 of at least class E, in particular an abrasion resistance in the range from 7500 to 9200 strokes, determined on a 5 mm mandrel.

(18) Here the inventive adhesive tape is manually and mechanically processable, and according to LV 312 advantageously has a temperature stability of 125 C. or more.

(19) With a high pliability and flexibility of the inventive adhesive tape 1 a bond strength between the first textile layer 4 and the second textile layer 5 of the substrate 2 can be adjusted that is sufficient so that during processing, in particular during a pulling-off from an adhesive tape roll, or even optionally during redetachment from an unwound state, such as on a cable harness, a delamination of the layers 4, 5 does not result.

(20) Here a laminate adhesive force, determined according to DIN EN 1939, between the first textile layer 4 and the second textile layer 5 of the substrate 2 is greater than 10 N/cm and preferably falls within the range of 12 N/cm to 15 N/cm, while an adhesive force determined according to DIN EN 1939 on the tape back is less than the laminate adhesive force between the layers 4, 5 and in particular can fall within the range of 4.0 N/cm to 15.0 N/cm, preferably 5.5 N/cm to 8.0 N/cm. Here an unwinding force determined according to DIN EN 1944 can, in particular, fall within the range of 2 N to 10 N, preferably 3 N to 7 N.

(21) Here, advantageously high adhesive forces are achievable using the inventive adhesive tape 1. Thus, with a test according to DIN EN 1939, the adhesive force on steel can assume values within the range of 5.0 N/cm to 15.0 N/cm, preferably 7.5 N/cm to 9.0 N/cm.

(22) Typical preferred values for two preferred embodiments a) and b) of the fabric structure and the characteristics of the fiber material of an inventive adhesive tape 1 can be seen in Table 6 below.

(23) TABLE-US-00006 TABLE 6 Fabric structures Feature Unit Property/Value Substrate material Polyester fabric Basis weight g/m.sup.2 130 Fiber type 100% polyester Warp Thread count 1/cm 45 Yarn type Filament, intermingled, textured, spin-dyed Filament count 36 Yarn strength dtex 167 Width-based thread dtex/cm >7000 strength Weft Thread count 1/cm a) 25 - b) 22 Yarn type Filament, intermingled, textured, spin-dyed Filament count 36 Yarn strength dtex 167 Width-based thread dtex/cm a) >3800 strength b) >3000

(24) With the kind of fabrics used for both the first textile layer 4 and the second textile layer 5 in an inventive adhesive tape 1, the technical properties reproduced in Table 7 below can be achieved.

(25) TABLE-US-00007 TABLE 7 Comparison of technical data of an inventive PET fabric-composite adhesive tape Test Unit Finding Comparison Thickness mm 0.44-0.45 1.0-1.1 Elongation at break % 23-31 25-28 Tensile strength N/cm 371-421 250-290 Adhesive force - steel N/cm 7.5-9.5 4.3-8.1 tape backs N/cm 5.5-8.0 3.0-6.9 Unwinding force N/19 mm 3-7 3-7 Flagging - 30 min mm 0-1 0-1 24 h mm 0-1 0-1 Abrasion 5 mm mandrel strokes 7500-9200 5300-6200 Laminate adhesive force N/cm 12-15 6-8 Noise damping Class B E Substrate color black and/or white black Substrate weight first layer g/m.sup.2 130 120 second layer g/m.sup.2 130 230 Basis weight Adhesive coating g/m.sup.2 100 130 (pressure-sensitive adhesive) Adhesive connection g/m.sup.2 100 100 layer (Laminate pressure- sensitive adhesive)

(26) The corresponding parameter values are compared to those of a conventional adhesive tape having a two-layer substrate made from a PET fabric layer and a fleece layer.

(27) The noise damping according to LV 312 specified in Table 7 of class B means that there is a noise damping in the range of 2 dB (A) to 5 dB (A) according to LV 312.

(28) In addition to the above-mentioned high abrasion resistance, the inventive adhesive tape 1 also has high tensile strength, as expressed in values that fall within the range of 300 N/cm to 600 N/cm, preferably 370 N/cm to 421 N/cm, in a test according to DIN EN 14410. The elongation at break, as indicated in Table 7, fell within the range of 23 percent to 31 percent. It should preferably be greater than 20 percent.

(29) Comparing the parameters listed in Table 7 of the inventive adhesive tape 1 to an additional known conventional adhesive tape (not listed in the table with respect to its properties), which is formed of the same substrate material but has only one-layer, wherein it is provided with an adhesive coating having a grammage in the range of approximately 80 g/m.sup.2 to 85 g/m.sup.2, the following surprising synergistic facts appear in the inventive tape.

(30) While the known tape including a one-layer substrate has a thickness (measured according to DIN 1942) in kicked the range of 0.24 mm to 0.25 mm, the inventive adhesive tape 1 has a thickness D that is less than double the thickness of the one-layer tape. Here the above-mentioned tensile strength values according to Table 3 are also less than double the tensile strength of the known tape. The latter fallwith an elongation at break in the range of 35 percent to 40 percentwithin the range of 270 N/cm to 315 N/cm in a test according to DIN EN 14410.

(31) However, at the same time, the abrasion resistance values of the inventive adhesive tape 1 advantageously amount to those mentioned in Table 3, but are disproportionately higher than those of the one-layer tape, which, with an achieved stroke count according to LV 312 of 1050 to 1200i.e. less than a seventh or eighth of the inventive adhesive tape 1has to be assigned to abrasion class D.

(32) Here the variation in the adhesive strength of the known tape is, with values of 4.0 N/cm to 14.1 N/cm on steel (difference of range limits: 10.1 N/cm) and 6.0 N/cm to 12.8 N/cm (difference of range limits: 6.8 N/cm), much greater than in the inventive adhesive tape 1, where the range boundaries of the adhesive strength corresponding to Table 3 are only spaced by 2.0 N/cmmeasured on steeland only by 2.5 N/cmmeasured on the tape back. The adhesive force is consequently advantageously much more subtly adjustable with the inventive adhesive tape 1, i.e. within narrower limits. Here the unwinding force of the known one-layer tape falls within the same range as that of the inventive tape.

(33) In view of the basis weights of the adhesive coating 3 and the adhesive connection layer 6 listed in Table 7, it can be noted that in the depicted exemplary embodiment these both lie at a consistent 100 g/m.sup.2. Nevertheless, the laminate adhesive forcedetermined according to DIN 1939of the inventive adhesive tape 1 between the first textile layer 4 and the second textile layer 5 of the substrate 2 is greater than the adhesive force on the tape back determined according to the same standard. This is necessary so that a pulling-off of the adhesive tape 1 from the roll does not result in a delamination of the layers 4, 5. Here the comparatively greater laminate adhesive force can be achieved by a stronger crosslinking of the adhesive in the adhesive connection layer 6, for example due to a higher radiation power of a UV source used for this purpose, by a temperature elevated by 50 C. to 140 C. with respect to room temperature, or by a pressure increased by 0.05 bar to 6.0 bar with respect to atmospheric pressure during the laminating process of the textile layers 4, 5, or by a formula of the adhesive in the adhesive connection layer 6 deviating from the adhesive formula in the adhesive coating 3.

(34) As mentioned above, adhesives for UV crosslinking are available from the firm BASF SE under the trademark acResin. The polymer chains of the acrylates contained in these adhesives are manufactured from the same acrylate monomers as are found in dispersion- and solvent-based acrylate pressure-sensitive adhesive systems. With irradiation with UV-C light (250-260 nm), however, polymerized UV-C reactive groups are excited to crosslinking reactions with adjacent acrylate chains. Such crosslinking here occurs very quickly but in a precisely controllable manner and takes place only as long as the UV light is applied. The polymerized photoreactive groups of the polymer, in particular those located in the side chains of the acResin, react here with any CH group of a neighboring chain. The crosslinking rate thereby lies typically in the range between 20 mJ/cm.sup.2 and 85 mJ/cm.sup.2, wherein the irradiation and crosslinking performance, depending on the UV lamp is in general in a range between 50 W/cm.sup.2 and 900 W/cm.sup.2. In this way, the crosslinking structure characteristic of pressure-sensitive adhesives is produced. A typical magnitude of the adhesive strength of an adhesive coating 3 that can be adjusted in this manner is approximately 6 N/cm according to DIN 1939. By modifying such an acResin adhesive with resin and/or sealable elastomers, particularly with those mentioned above having the properties listed in Tables 3 to 5, relatively higher laminate adhesive forces can be adjustedparticularly in the inventively provided adhesive connection layer 6in particular adhesive forces that are greater than 10 N/cm according to DIN 1939.

(35) Table 8 below illustrates the influence of the modification of an acResin adhesive with resin and/or sealable elastomers on the formation of the laminate adhesive force and the abrasion resistance. In both cases fabric structures were used as shown in Table 6 (fabric in weft according to a)). Adhesive application weight and degree of crosslinking were also equal in both cases.

(36) TABLE-US-00008 TABLE 8 Comparison of laminate adhesive force and abrasion resistance with the use of a modified and an unmodified acrylate adhesive Modified Unmodified Unit acrylate adhesive acrylate adhesive Adhesive application g/m.sup.2 100 100 weight Degree of mJ/cm.sup.2 35 35 crosslinking Laminate adhesive N/cm 11.0-13.0 1.5-3.0 force Abrasion resistance Strokes 5200-6700 2500-3500

(37) As can be seen in Table 8, the modified acrylate adhesive has significant advantages with respect to the laminate adhesive force since a higher substrate-material bond is effected. With the use of the modified acrylate adhesive a higher abrasion resistance is also achieved. If an unmodified acrylate adhesive is used, then under the same conditions there is only a very slight laminate adhesion force. In the present exemplary embodiment this is, in particular, up to 70 percent less, which results in the bond produced also showing a significantly lower abrasion resistance in the abrasion test.

(38) Deviating from the data for the exemplary embodiment depicted in Table 7 different adhesive forceswith the same, or also with different adhesive formulascan of course also be adjusted in the adhesive coating 3 and in the adhesive connection layer 6 by means of correspondingly differently selected adhesive grammages. Thus the application of adhesive in the adhesive layers 3, 6 can be correspondingly freely combined within the indicated ranges and preferred ranges, whereby in each case it can be ensured that the mentioned laminate adhesive force of more than 10 N/cm according to DIN 1939 is present in the adhesive connection layer 6.

(39) As is already apparent from the above, the invention is not limited to the exemplary embodiments shown and described, but rather also includes all embodiments that work the same way in the sense of the invention.

(40) Thus, for example, in the exemplary embodiments in the fabrics of the first textile layer 4 and/or in the fabrics of the second textile layer 5, the warp threads and the weft threads respectively are designed as identical, which has a positive effect concerning a high abrasion resistance, which however is not required in every case.

(41) Furthermore it is preferably possibleas indicated in Table 2to both manufacture the substrate 2 from a spin-dyed yarn or thread material and subject the substrate 2 to dispersion dyeing. Here, preferred color combinations produced by the use of suitable pigmentspreferably in polyester materialin the textile layers 4, 5 of an inventive adhesive tape 1 are black/black, black/white, and white/white. Such coloring corresponds to the term black and/or white in Table 3. The textile fabric layers 4, 5 respectively can also have the same or different colors.

(42) If necessary, the titer of the threads and thus also of the width-related thread thickness of the warp threads and/or the length-related thread thickness of the weft threadsrespectively determined by multiplication of the respective thread count per length unit by the respective titer of the threadcan deviate from the values given in Table 6.

(43) The person skilled in the art can also supplement the invention with additional advantageous technical measures without leaving the context of the invention. Thus, for example, a calendering of the substrate 2 or the first textile layer 4 and/or the second textile layer 5 prior to its lamination promotes a reduction in the permeability of the fabric to the adhesive in the adhesive layer 3 and/or in the adhesive connection layer 6. This is seen in the way the air-permeability of the fabric, measured according to DIN 53 887 at a test pressure of 500 Pa can preferably be smaller than 200 l/m.sup.2s and specifically amount to approximately 50 l/m.sup.2/s. Even with a potentially lower viscosity of the adhesive during the application of the adhesive, there is no penetration of the adhesive through the substrate 2.

(44) While the above description constitutes the preferred embodiment of the present invention, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope and fair meaning of the accompanying claims.