ADHESIVE STRIP FOR WRAPPING MOTOR-VEHICLE CABLES

Abstract

An adhesive strip usable for wrapping motor-vehicle cables has a woven support tape composed of warp yarns and weft yarns made of the same material and having a pair of opposite sides of which at least one has an adhesive coating. A yarn size of the weft yarns is greater than or equal to the yarn size of the respective warp yarns such that the size of the warp yarns measured in the weft direction is less than or equal to the size of the weft yarns measured in the warp direction. The weft yarns are twisted at more than 180 turns per meter of weft yarn. preferably at more than 400 turns per meter of weft yarn.

Claims

1. An adhesive strip usable for wrapping motor-vehicle cables, the strip comprising: a woven support tape composed of warp yarns and weft yarns made of the same material and having a pair of opposite sides, a yarn size of the weft yarns being greater than or equal to the yarn size of the respective warp yarns such that the size of the warp yarns measured in the weft direction is less than or equal to the size of the weft yarns measured in the warp direction, the weft yarns being twisted at more than 180 turns per meter of weft yarn; and an adhesive coating on one of the sides.

2. The adhesive strip defined in claim 1, wherein the weft yarns are each composed of threads twisted with one another about a longitudinal yarn axis, the threads being twisted with one another at more than 400 turns per meter of weft yarn.

3. The adhesive strip defined in claim 1, wherein the weft yarns are each composed of individual threads twisted with one another about a longitudinal yarn axis, the weft yarns being formed from two or more individual threads twisted with one another at more than 400 turns per meter of weft yarn.

4. The adhesive strip defined in claim 1, wherein the yarn size of the twisted weft yarn and the yarn size of the warp yarn is at least 40 dtex.

5. The adhesive strip defined in claim 4, wherein the yarn size of the twisted weft yarn and that of the warp yarn amount to less than 550 dtex.

6. The adhesive strip defined in claim 1, wherein each weft yarn is formed from 2 to 10 threads or 20 to 80 threads.

7. The adhesive strip defined in claim 1, wherein each weft yarn is formed from two or more individual threads that are twisted with one another at more than 450 turns per meter of weft yarn.

8. The adhesive strip defined in claim 1, wherein the yarn size of the warp yarns in the weft direction lies between 2000 dtex/cm and 4000 dtex/cm.

9. The adhesive strip defined in claim 1, wherein the yarn size of the weft yarns in the warp direction is between 8000 dtex/cm and 16000 dtex/cm.

10. The adhesive strip defined in claim 1, wherein the woven fabric support is made of polyester.

11. The adhesive strip defined in claim 11, wherein both the warp yarns and the weft yarns are of polyester.

12. The adhesive strip defined in claims 1 to 10, wherein the warp yarns and the weft yarns or the individual threads that form the weft yarns are each formed from 20 to 80 filaments.

13. The adhesive strip defined in claim 1, wherein the individual threads of the twisted weft yarns each have a yarn size of 100 dtex to 300 dtex.

14. The adhesive strip defined in claim 1, wherein the weft yarns are each formed from two or more individual threads having the same yarn size.

15. The adhesive strip defined in claim 14, wherein the threads are textured.

16. The adhesive strip defined in claim 1, wherein the number of warp yarns is between 40 and 60 per centimeter.

17. The adhesive strip defined in claim 1, wherein the number of weft yarns is between 20 and 30 per centimeter.

18. The adhesive strip defined in claim 1, wherein the warp and weft yarns impart to the adhesive strip such a tear resistance that it can be torn by hand with a transverse tear force of less than 10 N/cm.

19. The adhesive strip defined in claim 1, wherein the adhesive strip meets the requirements of friction-wear class C on a mandrel having a diameter of 5 mm in accordance with LV312.

20. The adhesive strip defined in claim 1, wherein the titer quotient, as the ratio of the yarn size of the weft yarns in the warp direction and the yarn size of the warp yarns in the weft direction lies between 2 and 8.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0026] The above and other objects, features, and advantages will become more readily apparent from the following description, reference being made to the accompanying drawing in which:

[0027] FIG. 1 is a perspective top view of the adhesive strip according to the invention;

[0028] FIGS. 1A and 1B are large-scale views of the details shown at IA and IB in FIG. 1; and

[0029] FIG. 2 is a section through the adhesive strip according to FIG. 1.

SPECIFIC DESCRIPTION OF THE INVENTION

[0030] As seen in FIG. 1, a woven fabric adhesive strip is shown that serves as a wrapping or cable wrapping tape in this embodiment. The adhesive strip or wrapping tape is used for wrapping motor-vehicle cables. For this purpose, the adhesive strip has a woven support tape 1 composed of warp yarns 2 and weft yarns 3 of the same type and material. In this embodiment, both the warp yarns 2 and the weft yarns 3 are made of polyester filaments. Furthermore, an adhesive coating 4 is provided on at least one side.

[0031] As seen in FIG. 2, the adhesive coating 4 is here present on a back face of the woven fabric support 1. The adhesive coating 4 has been applied to the woven fabric support 1 as an adhesive on an acrylate basis by coating as a hot-melt adhesive. Of course, this applies only as an example and is not restrictive.

[0032] FIG. 1 shows that the yarn size of the weft yarns 3 is greater than the yarn size of the respective warp yarns 2. Furthermore, the width-related yarn size of the warp yarns 2 is designed to be less than the length-related yarn size of the weft yarns 3. This holds true, in any case, for this embodiment shown. Fundamentally, the weft yarns 3 and the warp yarns 2 can, however, be configured the same, in each instance, in terms of their yarn size. However, this is not shown. In this case, the yarn size of the warp yarns measured in the weft direction also corresponds to the yarn size of the weft yarns measured in the warp direction. In both cases, 46 warp yarns 2 per centimeter width of the woven fabric support 1 are used according to this embodiment. The number of weft yarns 3 per centimeter length of the woven fabric support 1 amounts to 27/cm. This is shown only in part in the figure.

[0033] The yarn size or filament gauge of the respective warp yarns 2 amounts to 48 dtex. In connection with the thread count indicated above of 46/cm, this results in the width-related yarn size of the warp yarns 2 at 46 cm.Math.48 dtex=2208 dtex/cm.

[0034] In contrast, the weft yarns 3 have a yarn size or thread gauge of approximately 500 dtex. The weft yarns 3, in this embodiment and according to the invention, are twisted weft yarns 3 that in the present case are twisted at more than 400 turns per meter of each weft yarn 3. In fact, two variants are pursued in the present case. Thus, FIG. 1B shows weft yarns 3 that are composed of two individual threads 3a, 3b twisted together about a longitudinal axis L. This is shown in FIG. 1B. In this embodiment, the individual threads 3a, 3b each have a yarn size of 250 dtex. In general, the individual threads each have a yarn size from 100 dtex to 300 dtex.

[0035] In FIG. 1A, a variant is shown in which each weft yarn 3 is composed of threads 5 twisted together about a longitudinal axis L. The weft yarn 3 is an single-strand yarn. The threads 5 of this individual yarn are once again twisted together at more than 400 turns per meter of weft yarn 3. At this point, a total of 20 to 80 threads 5 per weft yarn 3 can be used. This is shown simplified and schematically in FIG. 1. In both variants of FIG. 1, the yarn size of the weft yarn amounts to about 500 dtex or less.

[0036] Furthermore, the design is such that the two individual threads 3a, 3b, in FIG. 1B, have the same and corresponding yarn size of 250 dtex in the example shown. Fundamentally, of course, it is also possible to work with individual threads 3a, 3b having a different yarn size when twisting and producing the weft yarn 3. Something comparable applies to the case that weft yarns 3 having a different number of threads 5 corresponding to the variant in FIG. 1A, are used. When twisted together, the threads 5, just like the individual threads 3a, 3b wind about the respective longitudinal axis L at more than 400 turns per meter of weft yarn 3.

[0037] This means that the twisted weft yarn 3 in FIG. 1B is composed of the individual threads 3a, 3b, that have been twisted together around the longitudinal axis L at more than 400 turns per meter of length of the twisted weft yarn 3. In the variant shown in the FIG. 1A, the twisted weft yarn 3 is composed of the threads 5 that in turn have been twisted together about the related longitudinal axis L at more than 400 turns. In this manner, the yarn size of the twisted weft yarn 3, in both cases, amounts to less than 550 dtex and at least 450 dtex, approximately 500 dtex in this embodiment.

[0038] Instead of the two individual threads 3a, 3b for producing the twisted weft yarn 3 according to the variant in FIG. 1B, at most ten individual threads 3a, 3b can be used for production, but this is not shown. Furthermore, work is generally carried out at 500 to 600 turns of the threads 5 or the individual threads 3a, 3b per meter of the twisted weft yarn 3. The weft yarns 3 have a right twist or left twist of the threads 5 or of the individual threads 3a, 3b throughout, as already described above.

[0039] Because the weft yarns 3, in the present case, each have a thread gauge or yarn size of approximately 500 dtex and, in this embodiment, a total of 27 weft yarns/cm are used, the yarn size of the weft yarns measured in the warp direction amounts to 27 cm.Math.500 dtex=13500 dtex/cm, in total.

[0040] From this, what is called the titer quotient can be determined, in other words the ratio of the size of the weft yarns 3 measured in the warp direction to the size of the warp yarns 2 measured in the weft direction. This ratio amounts, in the present case, to approximately 6.1, namely 13500:2208. In general, the invention works with titer quotients of 2 to 8. This is because the yarn size of the warp yarns 2 measured in the weft direction lies between 2000 to 4000 dtex/cm, in total. In contrast, the yarn size of the weft yarns 3 in the warp direction lies in the range from 8000 dtex/cm to 16,000 dtex/cm.

[0041] The individual yarns 2, 3, in other words the warp yarns 2 and/or the weft yarns 3, can be textured. This consequently also holds true for the threads 5 or for the individual threads 3a, 3b. Furthermore, the adhesive strip or woven fabric adhesive strip shown is configured so that it can be torn by hand. This means that to start a tear in the transverse direction, i.e. in the direction of the weft yarns 3, a transverse tear force of less than 10 N/cm of width of the woven fabric support 1 is required.