ADHESIVE CABLE-WRAPPING TAPE

Abstract

The subject matter of the invention is an adhesive tape, in particular a wrapping tape for sheathing cables in automobiles. The tape has a fabric backing (1, 3, 2, 4) in the form of a monoweave and an adhesive coating (7) on at least one side of the backing (1, 3, 2, 4). According to the invention, the monoweave is at least three-ply, and abrasion-resistant, non-connected warp threads (1, 3) form an outer layer and an inner layer. An intermediate layer made of weft threads (2, 4) is provided, the bonding points (5) of said layer coinciding with those of the outer layer and not with the bonding points (6) of the inner layer.

Claims

1. In an adhesive tape for wrapping motor-vehicle cables and having: a textile backing formed by a monoweave, and an adhesive coating on at least one face of the backing, the improvements wherein: the monoweave is at least three-ply and formed by non-connected abrasion-resistant warp yarns forming both an outer layer and an inner layer, and weft filaments forming an intermediate layer whose binding points with the outer layer do not coincide with binding points with the inner layer.

2. The adhesive tape according to claim 1, wherein the abrasion-resistant warp yarns are made from PE, PA or PET.

3. The adhesive tape according to claim 1, wherein the abrasion-resistant warp yarns are also cut-resistant.

4. The adhesive tape according to claim 1, wherein the abrasion-resistant warp yarns are bicomponent yarns.

5. The adhesive tape according to claim 1, wherein the weft yarns are made entirely or partially from an elastomer.

6. The adhesive tape according to claim 1, wherein the weft yarns are connected with the warp yarns in a twill weave.

7. The adhesive tape according to claim 1, wherein the warp and weft yarns of the monoweave have a fineness of at least 100 dtex, in particular a fineness of at least 150 dtex.

8. The adhesive tape according to claim 1, wherein the weight per unit area of the backing is between 50 g/m.sup.2 and 300 g/m.sup.2.

9. The adhesive tape according to claim 1, wherein the adhesive coating is formed by a contact adhesive based on acrylate.

Description

[0023] The invention will be discussed in greater detail below with reference to drawings that illustrate merely one embodiment in which:

[0024] FIG. 1 schematically shows the adhesive tape according to the invention, and

[0025] FIG. 2 is a section through the object of FIG. 1.

[0026] The drawing shows an adhesive tape composed of an abrasion-resistant textile backing 1, 3, 2, 4 formed by a monoweave. The textile backing 1, 3, 2, 4 has an adhesive coating 7. The adhesive coating 7 as a rule is on the inner face of the textile backing 1, 3, 2, 4 when wound for example around one or more cables.

[0027] The abrasion-resistant textile backing 1, 3, 2, 4 is formed overall as a monoweave. In turn, this monoweave has three layers traversed by abrasion-resistant warp yarns 1 and 3. The warp yarns 1 and 3 are not connected directly to one another. In fact, FIG. 1 shows that first warp yarns 1 define an outer layer. Furthermore, the warp yarns 3 form an inner layer of the monoweave or of the textile backing 1, 3, 2, 4.

[0028] The warp yarns 1 and 3 are retained in the monoweave or the textile backing 1, 3, 2, 4 by weft yarns 2 and 4. To this end, in the context of the embodiment and non-restrictively, the weft yarns 2 and 4 are connected with the warp yarns 1 and 3 in a twill weave. Such a twill weave is distinguished in that each weft yarn 2, 4 passes under a single warp yarn 1 or 3 and thereafter over at least two warp yarns 1 or 3.

[0029] If for example the middle weft yarn 2 of FIG. 1 is considered, it initially passes through under the warp yarn 1 of the outer layer that can be recognized on the right in FIG. 1. Thereafter, the weft yarn 2 passes over at least two inner warp yarns 3, in the present case over three inner warp yarns 3. Thereafter, the weft yarn 2 again passes under the next outer warp yarn 1. Thus the middle weft yarn 2 and the adjacent weft yarns 2 are offset from one another. At any rate, in this manner binding points 5 with the outer layer or the outer warp yarns 1 are formed for the weft yarns 2.

[0030] The weft yarns 4 additionally provided in contrast lead to further binding points 6 with the inner layer or the inner warp yarns 3. The binding points 5 and 6 do not coincide, or are offset from one another. That is to say, the binding points 5, 6 are oriented such that one binding point 5, 6 of the intermediate layer or of the weft yarns 2 and 4 with the outer layer or the outer warp yarns 1 that is to say in the present case the binding points 5, never coincide with the position of the binding point 6 of the intermediate layer or of the weft yarns 2 and 4 with the inner layer or the inner warp yarns 3. As a result, separation of the warp yarns 1 and 3 from each other occurs, because namely the outer warp yarns 1 can be distinguished from the inner warp yarns 3. In conjunction with the additional elasticity of the weft yarns 2 and 4, as a result to a certain extent of elastic movement of the warp yarns 1 or 3 relative to each other are possible.

[0031] In fact, in the present case the warp yarns 1 and 3 are manufactured from for example PE, PA, PET, as has already been described above. Furthermore, the warp yarns 1 and 3, just like the weft yarns 2 and 4, may be bicomponent yarns, as was discussed above. In this manner, as a rule both the outer layer and the inner layer are made abrasion-resistant, and namely achieve at least abrasion class C according to LV 312-1 (2009). In particular, the outer layer and/or inner layer even comply with class D according to 312-1. Furthermore, both layers are, or at least the outer layer is, impact-resistant corresponding to the standard LV 312-3 already mentioned previously.

[0032] The weft yarns 2 and 4 are made entirely or partially from an elastomer. Furthermore, the above-described twill weave is seen between the weft yarns 2 and 4 and the warp yarns 1 and 3 in the illustrated embodiment. The yarns 1, 3, 2, 4 of the monoweave in general have a fineness of at least 100 dtex. Furthermore, the weight per unit area of the backing 1, 3, 2, 4 realized in this manner is in the range from 50 g/m.sup.2 to 300 g/m.sup.2.

[0033] The number of warp yarns 1 and 3 may be between 8/cm and 50/cm. The number of weft yarns 2 and 4 may be designed to be from 8/cm up to 70/cm, so that overall the yarn density per cm.sup.2 in the textile backing 1, 3, 2, 4 according to the invention is considerably higher than with the monoweave according to EP 2 322 385 that forms the point of departure.

[0034] Finally, the adhesive coating 7 is advantageously a contact adhesive for example also of acrylate basis that can be applied to the backing 1, 3, 2, 4 in question by hot-melt coating. This of course applies only for example and is in no way limiting.