High-Temperature and Flame-Resistant Colored Adhesive Tape, Use of a Substate for its Manufacture, and Cable Harness including Such an Adhesive Tape

Abstract

A colored adhesive tape (1), in particular a yellow, orange-colored, or black adhesive tape (1), preferably a cable wrapping tape, with a temperature class of at least T3 (LV 312), including a textile substrate with a polymer plastic substrate (4, 4a, 4b), on which an adhesive material (5, 5a, 5b) is applied. In order to improve the temperature stability of the tape, while maintaining advantageous properties, the color of at least a part of the substrate (4, 4a, 4b) is formed by the inherent color of the polymer plastic material. The tape is preferably substrate formed of a polymer plastic materials which are aromatic, nitrogen-containing polymers from the group of polyoxadiazoles (POD), polybenzobisoxazoles (PBO) or polybenzimidazoles (PBI) (4, 4a, 4b). The adhesive tape (1) may be used as a cable harness (3).

Claims

1. A colored adhesive tape, in the form of a yellow, orange-colored or black adhesive tape, for use as a cable-wrapping tape with a temperature class of at least T3 according to LV 312, comprising, a textile substrate including at least one polymer plastic material, on which an adhesive layer is applied at least on one side of the substrate, wherein the color of at least one part of the textile substrate is formed by the inherent color of the polymer plastic material.

2. An adhesive tape according to claim 1, further comprising in that the polymer plastic material of the textile substrate is composed of an aromatic, nitrogen-containing polymer from the group of polyoxadiazoles (POD).

3. An adhesive tape according to claim 1, wherein the polymer plastic material of the textile substrate comprises an aromatic, nitrogen-containing polymer from the group of polyoxadiazoles (POD), of polybenzobisoxazoles (PBO), or the polybenzimidazoles (PBI).

4. An adhesive tape according to claim 1, wherein the textile substrate is manufactured from a fabric having a yarn that is comprised of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or of a copolymer of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or is formed from a mixture of these polymers.

5. An adhesive tape according to claim 1, wherein the textile substrate is manufactured from a fabric having a yarn that is comprised of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or of a copolymer of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or is formed from a mixture of these polymers, wherein the yarn contains fibers of a further textile or non-textile material or that the fabric of the textile substrate contains yarns of a further textile or non-textile material.

6. An tape according to claim 5, in that the fibers or yarn of the further textile material are comprised of one or more of a synthetic polymer, a natural polymer polyamide (PA), polyester (PES), special polyethylene terephthalate (PET), aramid, such as poly(p-phenylene terephthalamide) (PPTA) or poly(m-phenylene terephthalamide) (PMPI), rayon, polyvinyl alcohol (PVAL), polyvinyl acetate (PVAC), polyether-etherketone) (PEEK), polyphenylene (PPP), polyphenylene oxide (PPO), polyphenylene sulfide (PPS), or polyphenylene ether (PPE).

7. An adhesive tape according to claim 5 further comprising in that the fibers of the further non-textile material are metal fibers, carbon fibers, glass fibers, or basalt fibers.

8. An adhesive tape according to claim 2 further comprising in that the proportion of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or of copolymers of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or of a mixture of the copolymers inside the textile substrate falls in the range from 50 to 100 mass percent.

9. An adhesive tape according to claim 1 further comprising in that the polymer plastic material of the textile substrate has a yellow, orange, or black color.

10. An adhesive tape according to claim 1 further comprising in that the substrate at least sectionally has a color according to RAL corresponding to one of a number code 2000 yellow-orange, 2001 red-orange, 2002 blood-orange, 2003 pastel orange, 2004 pure orange, 2005 light orange, 2007 light-bright orange, 2008 bright-red orange, 2009 traffic orange, 2010 signal orange, 2011 deep orange, 2012 salmon orange, or 2013 pearl orange.

11. An adhesive tape according to claim 1 further comprising in that the polymer plastic material of the textile substrate contains additional stabilizers for increasing the UV resistance.

12. An adhesive tape according to claim 1 further comprising in that the textile substrate is free of colorants.

13. An adhesive tape according to claim 2, further comprising in that the textile substrate contains a colorant composed of a dye, a pigment, or carbon black.

14. An adhesive tape according to claim 1 further comprising in that the polymer plastic material of the substrate contains bathochromic functional groups, as of the chemical formulas OH, NH.sub.2, NHR, NR.sub.2, OR with R as the aliphatic or aromatic remainder.

15. An adhesive tape according to claim 1 further comprising in that the substrate is composed of a plastic polybenxobisoxazole, in the form of poly(p-phenylen-2,6-benzobisoxazole) or poly-1,4-phenylen-1,3,4-oxadiazole.

16. An adhesive tape according to claim 1 further comprising in that the substrate is composed as plastic of a copolymerisate of poly-1,4-phenylen-1,3,4-oxadiazole, as base polymer with poly-4,4-azobenzole-1,3,4-oxadiazole or poly-3,3-azobenzole-1,3,4-oxadiazole, wherein the proportion of the poly-4,4-azobenzole-1,3,4-oxadiazole or of the poly-3,3-azobenzole-1,3,4-oxadiazole based on the base polymer falls in the range from 0.5-5 mass percent.

17. An adhesive tape according to claim 1 further comprising in that the textile substrate comprises a fabric, wherein the warp and weft-thread count of the fabric is each greater than 20 per cm, wherein the upper limit of the warp and weft-thread counts each fall at 80 per cm.

18. An adhesive tape according to claim 1 further comprising in that the textile substrate comprises a fabric wherein the warp and weft yarn weight is less than 600 dtex.

19. An adhesive tape according to claim 1 further comprising in that the textile substrate comprises a fabric wherein the width-related warp yarn weight falls in the range from 6000 dtex/cm to 25000 dtex/cm.

20. An adhesive tape according to claim 1 further comprising in that the textile substrate comprises a fabric wherein the length-related weft yarn weight falls in the range from 4000 dtex/cm to 17000 dtex/cm.

21. An adhesive tape according to claim 1 further comprising in that the adhesive layer comprises a pressure-sensitive self-adhering adhesive, in the form of a silicone adhesive, an acrylate adhesive, or a rubber-based adhesive.

22. An adhesive tape according to claim 1 further comprising in that the adhesive layer has a specific surface mass in the range from 60 g/m.sup.2 to 200 g/m.sup.2.

23. An adhesive tape according to claim 1 further comprising in that the adhesive tape has a thickness in the range from 0.15 mm to 1.50 mm according to the standard EN 1942.

24. An adhesive tape according to claim 1 further comprising in that the adhesive tape has an elongation at break in the range of 20% to 50%, according to the standard EN 14410.

25. An adhesive tape according to claim 1 further comprising in that the adhesive tape has a breaking force in the range of 100 N/cm to 600 N/cm, according to the standard EN 14410.

26. An adhesive tape according to claim 1 further comprising in that the adhesive tape has an adhesive force on steel in the range of 2.0 N/cm to 6.0 N/cm, according to the standard DIN EN 1939.

27. An adhesive tape according to claim 1 further comprising in that the adhesive tape has an adhesive force on a tape back in the range of 1.5 N/cm to 5.0 N/cm according to the standard DIN EN 1939.

28. An adhesive tape according to claim 1 further comprising in that the adhesive tape has a noise damping of at least class B according to the standard LV 312.

29. An adhesive tape according to claim 1 further comprising in that the adhesive tape has an abrasion resistance of at least class B according to the standard LV 312.

30. An adhesive tape according to claim 1 by further comprising a plurality of layers connected to one another of the substrate and/or or of the adhesive layer.

31. An adhesive tape according to claim 1 further comprising by the adhesive tape having a temperature resistance at least of class T4 according to LV 312.

32. An adhesive tape according to claim 1 further comprising the adhesive tape having a flame resistance of at least class B, according to LV 312.

33. Use of a textile substrate, containing at least one polymer plastic material for manufacturing a casing for an adhesive tape according to claim 1, having a temperature class of at least T3 according to LV 312, wherein the polymer plastic material of the textile substrate is an aromatic, nitrogen-containing polymer from the group of polyoxadiazoles (POD), polybenzobisoxazoles (PBO), or polybenzimidazoles (PBI).

34. Use of a substrate according to claim 1, wherein the textile substrate is manufactured from a fabric having a yarn that is comprised exclusively of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or of a copolymer of polyoxadiazole (POD), polybenzobisoxazole (PBO), or polybenzimidazole (PBI) or is formed from a mixture of these polymers.

35. A cable harness, comprising an adhesive tape according to claim 1 and a line set comprised of a plurality of strands which line set is wound by the adhesive tape or the substrate, wherein the strands include a casing comprised of a plastic.

36. A cable harness according to claim 35, in that the casing of the strands is comprised of a halogen-containing plastic, or of a halogen-free plastic.

37. A cable harness according to claim 35 further comprising the cable harness having a temperature resistance at least of class T4, according to LV 312.

38. A cable harness according to claim 35 characterized by the cable harness having a flame resistance at least of class B, according to LV 312.

39. A cable harness according to claim 35 further comprising in that the adhesive tape or the substrate forms a cuff or a clip with an interior around the line set comprised of a plurality of strands.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The invention shall be explained in more detail based on the exemplary embodiments depicted in the drawings.

[0050] FIG. 1 shows a depiction of a cable harness wrapped with an inventive technical adhesive tape,

[0051] FIG. 2 shows a structural formula that exemplarily stands for a first group of plastics usable in the context of the invention as material of the substrate,

[0052] FIG. 3 shows a structural formula of an embodiment of plastic preferably usable in the context of the invention as yellow material of the substrate,

[0053] FIG. 4 shows a chemical equation of the manufacturing of a plastic group preferably usable in the context of the invention as material of the substrate,

[0054] FIG. 5 shows a structural formula that exemplarily stands for a further embodiment of a plastic group preferably usable in the context of the invention as material of the substrate,

[0055] FIG. 6 shows a structural formula of an embodiment of a plastic preferably usable in the context of the invention as yellow material of the substrate,

[0056] FIG. 7 shows a structural formula of an embodiment of a plastic preferably usable in the context of the invention as orange-colored material of the substrate,

[0057] FIG. 8 shows in cross-section a depiction of a further embodiment of an inventive technical adhesive tape,

[0058] FIG. 9 shows a perspective depiction of a third embodiment of an inventive technical adhesive tape,

[0059] FIG. 10 shows a perspective depiction of a wire harness jacketable using a third embodiment of an inventive technical adhesive tape,

[0060] FIG. 11 shows a perspective depiction of a fourth embodiment of an inventive technical adhesive tape, and

[0061] FIG. 12 shows a perspective depiction of a wire harness jacketed with the fourth embodiment of an inventive technical adhesive tape.

[0062] In the various Figures of the drawings identical parts are always provided with the same reference numbers, so that they are each generally described only once.

DETAILED DESCRIPTION

[0063] For the subsequent description it is emphasized that the invention is not limited to the exemplary embodiment and not to one or more features here of described feature combinations, rather each individual feature of the exemplary embodiment, even detached from all others in the context of partial features described therewith, is in itself of meaning for the object of the invention. Thus, for example, the features of the adhesive-tape properties listed in Tables 4 and 5 below are not necessarily associated with one another.

[0064] In particular the use of an inventive textile substrate whose polymer plastic material is an aromatic, nitrogen-containing polymer preferably from the group of polyoxadiaxoles (POD) or also from the group of polybenzobisoxazoles (PBO) or of polybenzimidazoles (PBI), in particular of the inventive adhesive tape, is also attributed an independent inventive meaning.

[0065] As FIG. 1 first of all illustrates, which shows a preferred application case of an inventive adhesive tape 1 for jacketing of cable sets, i.e., a cable-wrapping tape, an inventive adhesive tape is advantageously suitable for jacketing strands 2 of electrical lines whereby; in the depicted case by a helical wrapping; a cable harness 3 can be produced, in particular for the automobile industry.

[0066] The inventive adhesive tape 1 here comprises a band-shaped textile colored substrate 4 and an adhesive layer 5 applied one-side on the substrate 4, preferably comprised of a pressure-sensitive adhesive. The textile substrate 4 comprises at least one polymer plastic material, wherein the color of the substrate 4 is formed preferably completely, but at least but portions thereof, by the inherent color of the polymer plastic material.

[0067] The inventive adhesive tape 1 combines a high abrasion resistance, such as is known from cable winding tapes manufactured on the basis of polyester fabrics, with an increased temperature and flame resistance, wherein the adhesive tape 1 is preferably embodied in the colors yellow, orange, or black, and the polymer plastic material of the substrate 4 is a textile, in particular a fabric based on an aromatic, nitrogen-containing polymer from the group of polybenzobisoxazoles (PBO), the polybenzimidazoles (PBI), or the polyoxadiaxoles (POD).

[0068] As an example for polybenzobisoxazoles (PBO) a general structural formula of poly (2,6-benzobisoxazole) is depicted in FIG. 2, which represents a plastic preferably usable in the context of the invention as material of the substrate 4. Polybenzobisoxazoles (PBO), which contain aliphatic or alicyclic groups between the individual benzobisoxazole groups, are largely colorless. In contrast, such a large chromophoric system arises with the use of a fabric made from the poly(p-phenylene-2,6-benzobisoxazole) depicted in FIG. 3, trade name Zylon (R), due to the many conjugated double bonds, that without addition of further pigments or dyes a yellow color is achieved as a temperature-stable, immanent property. A further color shift into the longer wavelength range is possible here, as mentioned above, by the manufacture of suitable copolymerizates.

[0069] FIG. 4 shows a general chemical equation for a polycondensation reaction tetraaminobiphenyl (left) and isophthalic acid (right) under dehydration for manufacture of polybenzimidazole (PBI), which also represents a plastic preferably usable in the context of the invention as material of the substrate 4. Due to its extensive chromophoric system Polybenzimidazole (PBI) already has a yellow-brown color desired for many applications in the automobile sector.

[0070] Finally FIG. 5 shows, as a further example for a material of the substrate 4, which represents a preferably usable plastic, a general structural formula of polyoxadiazole (POD). Polyoxadiazoles (POD), which contain aliphatic or alicyclic groups between the individual oxadiazole groups, are largely colorless. With the use of a fabric made from poly-1,4-phenylen-1,3,4-oxadiazole, as depicted in FIG. 6, trade name Arselon (R), such a large chromophoric system arises in contrast due to the many conjugated double bonds that the fabric already has a yellow color without the addition of further pigments or dyes. If during the manufacture of the base polymers copolymerization occurs with 0.5-5 mass percent (based on the base polymer), preferably with 1-3 mass percent (based on the base polymer), poly-4,4-azobenzole-1,3,4-oxadiazole, shown in the structural formula in FIG. 7, trade name Arselon (R) S- or poly-3,3-azobenzole-1,3,4-oxadiazole, then due to the azo groups a bathochromic shift is achieved up to a preferably desired orange hue RAL 2003. In all of these cases the desired yellow or orange color is an inherent, temperature-stable material property so that no additional coloring with temperature sensitive-dyes or pigments is required.

[0071] However, in the context of the inventive use of in particular colorless or also colored polyoxadiazoles (POD) it can optionally be provided that a coloring or color change using dyes or pigments occurs. Thus, for example, colorless or also orange colored POD fibers or POD fabrics can be colored as needed with black dyes or pigments, such as, for example, carbon black, without the advantageous high temperature stability, flame resistance, and abrasion resistance thereby being lost. A dispersion or spinning-jet-coloring with color pigments can occur. If dye is used as colorant then depending on the solubility properties of the dye the coloring can take place in an aqueous solvent or in an organic solvent, such as an alcohol, ketone, or oil, or in suitable mixtures. Basic or acidic solutions can be used. Furthermore, coloring accelerants, so-called carriers, can optionally be used together with surfactants, which carriers cause a swelling of the fiber material and can thereby facilitate the diffusion of the dyes. Aromatic compounds, such as, for example, phenol, phenylphenol, salicylic acid, including their derivatives or xylols, come into consideration as such coloring accelerants. However, it is to be noted that the aromatic, nitrogen containing polymers from the group of the polyxoadiazoles (POD), the polybenzobisoxazoles (PBO) or the polybenzimidazoles (PBI) represent material groups that are difficult to dye. However a carrier can advantageously be used here that contains N-cyclohexyl-2-pyrrolidone. Here a mixture of N-cyclohexyl-2-pyrrolidone with an alkyl- or aryl-benzoate, in particular with methyl benzoate, is preferred, wherein the mixture can be used as a solution or suspension. A preferred mass ratio of N-cyclohexyl-2-pyrrolidone to the alkyl- or aryl-benzoate here can fall in the range from 2:3 to 8:1.

[0072] Table 4 gives an overview of the fabrics usable as polymer plastic materials of the substrate 4 for the manufacture of inventive adhesive tapes 1 and the properties of these fabrics.

[0073] It can be seen from table 4 that the thread counts of the warp of a preferred fabric for the substrate 4 can vary in the range from 8 per cm to 42 per cm. The thread counts of the weft can vary in the range from 6 per cm to 30 per cm. The yarn strength of the warp as well as of the weft can preferably each fall in the range from 250 dtex to 2800 dtex.

TABLE-US-00004 TABLE 4 Fabric structure and fiber description Fabric 1 Fabric 2 Fabric 3 Fabric 3 Fabric 4 Fabric 5 Fabric PBO POD POD POD POD POD (Zylon) (Arselon (Arselon (Arselon (Arselon (Arselon S) S) S) S) Color honey orange orange orange yellow orange yellow Weave plain plain plain plain twill 2/1 twill 2/1 weave weave weave weave Yarn type filament filament filament filament staple filament fiber Warp- 1/cm 8 8 22 39 26 42 thread count Weft-thread 1/cm 6 15 16 22 24 30 count Yarn weight dtex 2800 2000 294 294 385 294 warp Yarn weight dtex 2800 1000 294 294 385 294 weft Filament count 1800 1000 200 200 200 200 count warp Filament count 1800 1000 200 200 200 200 count weft Width- dtex/cm 22400 16000 6488 11466 10010 12348 realted warp thread weight Length- dtex/cm 16800 15000 4704 6468 9240 8820 related warp thread weight Surface EN g/m.sup.2 430 310 166 200 212 225 weight 2288 Thickness EN mm 0.45-0.48 0.62 0.25 0.28-0.29 0.29-0.30 0.29-0.30 1942 Elongation EN % 15-30 11-18 19-20 22-23 22-23 24-27 at break 14410 Breaking EN N/cm 1000-2000 570-640 400-480 350-500 235-238 400-500 force 14410 Air ISO l/m.sup.2s 16-17 95-100 35-40 8-11 230-280 220-290 permeability 9237 Abrasion LV 312 B B B B/C B/C D class with adhesive Use known fabrics Example Example 1 2 + 3 *deviating from ISO 9237 a differential pressure of 500 Pa was used

[0074] In the yarns of the substrate 4 the fibers are preferably predominantly processed into filament yarns in an advantageous manner. Such fabrics made from filament yarns have a higher abrasion resistance than fabrics with yarns made from staple fiber yarns. The dense weave with a twill weave or plain weave is advantageous here.

[0075] As table 4 also shows the filament counts of a filament yarn can also preferably fall in the range from 200 to 1800 per cm. The fiber fineness of the filaments here can preferably fall in a range from 2 dtex to 3 dtex. This applies; independent from each other, both for the warp and for the weft.

[0076] The width-related warp-yarn strength can advantageously fall in the range from 6000 dtex/cm to 25000 dtex/cm. The length-related weft-yarn strength can advantageously fall in the range from 4000 dtex/cm to 17000 dtex/cm. The specific surface-based mass (grammage) can fall in the range from 200 g/m.sup.2 to 450 g/m.sup.2. The thickness can fall in the range from 0.20 mm to 0.65 mm, preferably in the range from 0.25 mm to 0.30 mm.

[0077] Silicone adhesive, as already mentioned, is particularly suited as temperature-resistant pressure-sensitive adhesive for the adhesive layer 5. Surprisingly, however, it is also possible to achieve good results with adhesives based on polyacrylates or synthetic rubber. To be sure with extreme temperature load a hardening of the adhesive mass results; however, the helical protective wrapping applied with overlap around the strands 2 of the cable set 3 endures due to the good adhesion on the tape pack in the bending test prescribed according to the aging test according to LV 312. In principle the use of solvent acrylates or even the use of acrylate-monomer mixtures or acrylate-prepolymers is also possible. After the coating these are optionally polymerized and cross linked either thermally or using UV radiation.

[0078] The adhesive layer 5 can have an application weight (specific surface mass) in the range from 60 g/m.sup.2 to 200 g/m.sup.2, preferably an application weight in the range from 90 g/m.sup.2 to 150 g/m.sup.2, particularly preferably to 100 g/m.sup.2.

TABLE-US-00005 TABLE 5 Adhesive tape overview Example Example Example Example Example Comparison Comparison Unit Standard 1 2 3 4 5 1 2 Fabric POD POD POD PBO POD PET Glass material Substrate 1/cm 26 42 42 8 8 45 47 construction warp thread count Substrate 1/cm 24 30 30 6 15 25 21 construction weft thread count Yarn type staple filament filament filament filament filament E glass warp/weft fiber yarn yarn yarn yarn yarn yarn Substrate g/m.sup.2 EN ISO 212 225 225 430 310 130 130 weight 2286-2 Adhesive acrylate silicone acrylate acrylate acrylate acrylate silicone Adhesive g/m.sup.2 EN ISO 100 100 100 150 150 90 150 application 2286-2 Thickness mm DIN EN 0.30-0.31 0.30-0.32 0.30-0.32 0.50-0.52 0.60-0.65 0.24-0.25 0.15-0.16 1942 Elongation % DIN EN 25-30 30-35 28-35 20-40 10-20 36-44 7.5-8.0 at break 14410 Breaking N/cm DIN EN 250-270 450-500 450-480 1500-2500 570-640 241-285 280-330 force 14410 Adhesive N/cm DIN EN 2.0-2.5 2.0-3.5 2.5-3.5 2.5-4.0 2.4-3.8 4.0-6.5 2.3-3.5 strength on 1939 steel Adhesive N/cm DIN EN 2.0-2.5 2.5-3.0 2.0-3.0 2.0-3.0 3.0-3.5 7.0-9.5 2.0-3.5 strength on 1939 tape backs Unrolling N DIN EN 2-9 2-9 2-9 2-9 2-9 3-7 2-8 force 1944 Fire LV 312 A A A A A B A resistance Noise LV 312 B B B B B A A damping class Abrasion LV 312 B/C D D B B D A/B class Temperature LV 312 E E E E E D E class

[0079] Table 5 lists various inventive adhesive tapes 1 including their properties in comparison to existing adhesive tapes. The inventive adhesive tapes 1 embodied in this table are the following:

Example 1

[0080] Substrate 4 made from staple fiber fabric made from a copolymer made from poly-1,4-phenylene-1,3,4-oxadiazole and poly-4,4-azobenzole-1,3,4-oxadiazole (orange-colored) according to FIG. 7 with a UV acrylate adhesive in the adhesive layer 5.

Example 2

[0081] Substrate 4 made from filament fiber fabric made from a copolymer made from poly-1,4-phenylene-1,3,4-oxadiazole and poly-4,4-azobenzole-1,3,4-oxadiazole (orange-colored) according to FIG. 7 with a UV acrylate adhesive in the adhesive layer 5.

Example 3

[0082] Substrate 4 made from filament fiber fabric made from a copolymer made from poly-1,4-phenylene-1,3,4-oxadiazole and poly-4,4-azobenzole-1,3,4-oxadiazole (orange-colored) according to FIG. 7 with silicone adhesive in the adhesive layer 5.

[0083] The two further examples 4 and 5 of the table relate to inventive adhesive tapes 1 including substrates 4 made from typical known orange-colored fabrics Zylon (R) (Example 4) and Arselon (R) S (Example 5). These examples 4 and 5 show which values can be achieved with the use of common PBO/POD fabrics having coarse weave.

Comparison Example 1

[0084] substrate 4 made from filament fiber fabric made from polyethylene terephthalate (PET) with UV acrylate adhesive in the adhesive layer 5.

Comparison Example 2

[0085] substrate 4 made from filament fiber fabric made from glass fibers with silicone adhesive in the adhesive layer 5.

[0086] Inventive adhesive tapes 1 can thus advantageously combine the following properties:

[0087] High temperature resistance: >175 C. (class T5 or E according to LV 312), Best flame resistance: class A according to LV 312/ISO 3795.

[0088] Good abrasion resistance, in particular class C or D according to LV 312/ISO 6722.

[0089] With respect to a comparison with the temperature classes achieved according to the prior art it is noteworthy in particular here that the temperature class T5, not just T3 as according to EP 2 546 317 B1, could advantageously be inventively achieved, and in fact while avoiding the use of health-hazardous anthraquinone. Here the limitation to the continuous use temperature of 175 C. is due to the fact that the relevant standard LV 312 currently lists this as the highest temperature class. In an analogous text with high-temperature-resistant silicone-jacketed lines, resistances with a continuous use temperature of 225 C. could also be seen with example 2.

[0090] The line set comprised of a plurality of strands 2 is wrapped with the inventive adhesive tape 1, wherein the strands 2 can include a casing comprised of polyvinyl chloride (PVC), which in FIG. 2 is indicated by the reference number 2a. A high compatibility with the lines is however in particular not only given by PVC and other halogen-containing casing materials, such as, for example, perfluorethylenepropylene (FEP) or ethylene tetrafluoroethylene (ETFE) but also if strands 2 are used in the cable set 2 whose casing 2a is comprised of halogen-free plastics, such as radiation cross linked polyethylene (XPE), polypropylene (PP), or silicone (VMQ).

[0091] The invention is not limited to the depicted and described exemplary embodiments, but rather also includes all functionally identical embodiments in the sense of the invention. This applies, for example, to the application weight of the adhesive layer 7, which can vary in wide ranges, but also for other parameters that are adaptable in wide ranges to the respective application case; independent of the color of the inventive adhesive tape 1 and the type of the fabric of its substrate 4.

[0092] In addition to those already mentioned, in particular for the substrate 4, the following parameter ranges appear as particularly advantageous for the widest application range of an inventive adhesive tape 1:

[0093] a thickness in the range from 0.15 mm to 1.50 mm, preferably from 0.20 mm to 0.60 mm, according to the standard EN 1942,

[0094] an elongation at break in the range of 20% to 50%, preferably from 25% to 35%, according to the standard EN 14410,

[0095] a breaking force in the range from 100 N/cm to 600 N/cm, preferably in the range from 250 N/cm to 500 N/cm, according to the standard EN 14410,

[0096] an adhesive force on steel in the range from 2.0 N/cm to 6.0 N/cm, preferably in the range from 2.5 N/cm to 3.5 N/cm, according to the standard DIN EN 1939,

[0097] an adhesive force on a tape back in the range from 1.5 N/cm to 5.0 N/cm, preferably in the range from 2.0 N/cm to 3.0 N/cm, according to the standard DIN EN 1939,

[0098] a noise damping of at least class B according to the standard LV 312,

[0099] an abrasion resistance at least of class B, preferably of class C or D, according to the standard LV 312.

[0100] In the depiction shown in FIG. 8 of a further embodiment of an inventive technical adhesive tape 1 it is provided that on a first tape layer 1a a second tape layer 1b is laminated-on, which second tape layer 1b in the case depicted has the same width B2 as the width B1 of the first tape layer 1a. On both sides adhesive overhangs 1, 2 are provided, wherein the adhesive overhang 1 on the one longitudinal side of the adhesive tape 1 is exactly as large as the overhang 2 on the other longitudinal side of the adhesive tape 2, however the adhesive layers 5a, 5b face in opposite directions (in FIG. 8 one upward and one downward). The total width B of the adhesive tape 1 results from the sum of the widths of the adhesive overhangs 1, 2 and the width of the overlapping region. The respective substrates 4a, 4b of the tape layers 1a, 1b can be comprised of different materials, wherein, for example, the substrate 4a of the first tape layer 1a can be comprised of a fleece and the substrate 4b of the other tape layer 1b of a fabric. Due to the special construction a contact of the adhesive surfaces to the object to be wrapped is substantially avoided. If the object to be wrapped is, for example, a cable set comprised of a plurality of individual lines 2, these individual lines can thereby move relative to one another and a lower bending stiffness of the wrapped cable set is achieved. In the context of the invention at least one of the two substrate layers 4a, 4b here must be colored.

[0101] The two further embodiments of the invention shown in FIGS. 9 to 12 are respectively wrapping means 1 for an elongated object, which, however, according to the application is also subsumed under the term adhesive tape 1, even if it only has a comparatively small length L. The embodiments depicted can be, for example, sections of a longer tape. In particular in turn in FIGS. 10 and 12 an electrical cable set including strands 2 is depicted as elongated object. The adhesive tape 1 with the width B here is formed by a second substrate layer 4b being laminated-on onto a first tape layer 1a that comprises a first substrate layer 4a with an adhesive layer 5a. The second substrate layer 4b forms a central non-adhesive region of the adhesive tape 1 over a width Be, which central non-adhesive region serves, in particular exclusively, for abutment of the to-be-wrapped object 2 and is respectively delimited on both sides by an edge region R1, R2. If this is comprised of fleece, for example, in this manner a high noise damping and a high abrasion resistance of the inventive adhesive tape 1 can simultaneously be achieved. In the installed state the two edge regions R1, R2 can, as FIG. 7 shows, respectively together form an attachment flag F lying laterally near the centrally disposed second substrate layer 4b. In each edge region R1, R2 there is at least one hole, in the depicted case two holes L1, L2, L1, L2. Here a hole L1, L2 in the one edge region R1 is respectively axially symmetrically associated with a hole L1, L2 in the other edge region such that the holes L1, L2, L1, L2 can be brought together for covering by a folding of the adhesive tape 1 along a main axis X-X (FIG. 9) extending through the central region 4b or by a bending about an axis Y-Y spaced from the adhesive tape 1 (FIG. 10) extending parallel to this main axis X-X, as shown in FIG. 10. The axis Y-Y spaced from the adhesive tape 1 here is identical to the longitudinal axis of the elongated object 2. In terms of manufacturing technology the holes L1, L2, L1, L2 can more simply and therefore preferably be stamped holes. Due to the prefabricated holes L1, L2, L1, L2, through which; as shown in FIG. 10 but then also in FIG. 12; attachment means 8, such as attachment clips, can be plugged, with the inventive adhesive tape 1 a cuff M, also called a sleeve, can be provided for the elongated object, which due to a special design already contains the possibility of a simple attachment to the attachment means 8 such as a fastener on another component, e.g., on a vehicle chassis. The necessity of a later attachment of attachment means 8 on the longitudinal wrapping M by additional adhesive tapes or the like is thereby omitted. The size and shape of the holes L1, L2, L1, L2 can preferably be matched to the size and shape of the attachment means 8 such that the attachment means 8 is held in the holes L1, L2, L1, L2 by interference, and friction-fit. Here also the respective substrates 4a, 4b of the adhesive tapes 1a, 1b can be comprised of different materials, wherein, for example, the substrate 4b can be comprised of a fleece and the substrate 4a of the first (single) adhesive tape 1a of a fabric in order to combine a high noise damping and a high abrasion resistance with each other. In this embodiment at least the outer-lying first substrate layer 4a in the installed state should be colored in the context of the invention.

[0102] In the embodiment depicted in FIGS. 11 and 12, in contrast to the embodiment in FIGS. 9 and 10, a length L of the wrapping means, which length L extends in the direction of the main axis X-X, is not larger than a width B of the wrapping means, which width B extends transverse to the direction of the main axis X-X, whereby the wrapping means 1 can form an attachment clip S for the elongated object. This is expressed in FIG. 9, which exemplarily shows an installed state of the corresponding embodiment, by a reference number S placed in brackets behind the reference number 1 in the drawing. Furthermore it is characteristic for this embodiment that only one hole L1, L1 lies in each edge region R1, R2. The embodiment is equipped with adhesive over its entire surface by the adhesive layer 5. However, the adhesive layer 5 could also be omitted and only the substrate 4 used. A feature of this embodiment also consists in that one of the holes L1 is configured as a slot. Due to the slot it is advantageously possible to design the field of use of the inventive wrapping means to be universal by being usable for different diameters of the to-be-wrapped object.

[0103] it is expressly noted that the exemplary embodiments are not limited to all features in combination, rather each individual feature can also have an inventive meaning in itself separate from all other partial features.

[0104] Thus a similar depiction of an adhesive tape 1 as in FIG. 8 is also found in the description of EP 1 315 781 B1, wherein in this context it is mentioned that the other different adhesive tape embodiments described there can also be inventively designed.

[0105] For example, in the embodiment according to FIG. 9, in particular if the second substrate layer 4b is comprised of a fleece; a further adhesive layer can be applied to the second substrate layer 4b.

[0106] Furthermore the invention is also thus far not limited to the feature combinations in claim 1 and in the other independent claims, but can also be defined by any other desired combination of specific features of all individual features disclosed overall. This means that in principle practically any individual feature of claim 1 and of the other independent claims can be omitted or replaced by at least one individual feature disposed at another point in the application.

[0107] 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.