Adhesive tape for wrapping elongated goods, especially cable sets

Abstract

The invention relates to an adhesive tape, wherein the adhesive tape has a) a front first end, b) a rear second end, c) a longitudinal direction extending from the first end to the second end, d) a textile carrier with a top and a bottom, e) an adhesive compound applied to the bottom of the carrier, and f) at least one knitting thread and / or at least one sewing thread arranged such that g) it comes into contact with the adhesive compound on the bottom of the carrier and h) forms a plurality of adjacent connecting loops on the top side, wherein each connecting loop passes through at least one adjacent connecting loop in the direction of the second end, and the connecting loops are arranged such that the loop opening of each individual connecting loop points towards the second end and the actual loop of each individual connecting loop points towards the first end.

Description

[0001] The invention relates to an adhesive tape, wherein the adhesive tape has a first end, a second end, a longitudinal direction extending from the first end to the second end, a textile carrier with a top and a bottom, an adhesive compound applied to the bottom of the carrier and at least one knitting thread and / or at least one sewing thread, which is arranged such that it comes into contact with the adhesive compound on the bottom of the carrier and forms a plurality of adjacent connecting loops on the top.

[0002] Rolled adhesive tapes have long been known in the art. The adhesive tape, which can also be called laminate, can be supplied in fixed lengths, for example by the meter, or as continuous rolls. There are also disc-shaped tape rolls, which are referred to in technical terms as "pancakes." In this case, the width of the adhesive tape corresponds to the width of the tape roll, since the tape consists of multiple layers and windings that are positioned as precisely as possible on top of each other.

[0003] Alternatively, the adhesive tape can be wound onto a core, similar to a textile yarn, whose length is significantly greater than the width of the tape. By superimposing a rotational movement of the core and an axial movement of the core or the tape guide element, the tape initially forms a first, radially innermost layer of helical turns. At the end of the first layer and the transition to the second layer, the orientation of the axial movement is inverted while the rotational movement remains unchanged. At the end of the second layer and the transition to the third layer, the orientation of the axial movement is inverted again, thus reverting to the original orientation, while the rotational movement remains unchanged. The pitch angle remains constant between each of these orientation reversal points. In this way, numerous layers of turns can be formed, with each turn intersecting the others (cross-wound coils).

[0004] Regarding the terminology of spooling technology, reference should be made to the electronic textbook entitled "Technical Information on the Principles of Spooling" by the author Neal Rothwell, published on the Internet since July 1, 2001 by the company "Double R Controls LTD, England".

[0005] Tape rolls and spools of this type are widely used. Tapes of this kind are used, for example, to wrap an object, such as an elongated item. The object can be a single item or a composite of several items. For instance, in automotive manufacturing, it is common practice to bundle cable harnesses, i.e., multiple individual cables, by wrapping them together with adhesive tape. The tape's function is not only to join several items into a single unit. By using tape, which typically has a textile backing, it also reduces or completely eliminates rattling noises that can otherwise occur when the item comes into contact with parts of the vehicle body or other components.Therefore, these types of adhesive tapes and the objects wrapped with them can be installed in vehicles without additional encasing, such as foam, thus reducing costs, manufacturing time, and weight. Furthermore, adhesive tapes can also serve as protection against abrasion, among other things.

[0006] To ensure easy and safe handling of adhesive tapes, they are typically wound onto a roll. This is done, for example, on a core, which may or may not later become part of the tape roll. The core is usually made of cardboard or plastic. When winding the tape, it is wound onto the core in several turns. One end of the tape is therefore located radially inside and is referred to as the second end. The opposite end is located radially outside and is referred to as the first end. This terminology is useful because the first end is the first to be unwound from the roll and used. The tape runs lengthwise from the first end to the second end.

[0007] The textile backing in such cable wrapping tapes can be a nonwoven fabric. Adhesive tapes are known in the art that have a nonwoven fabric as a backing, which is reinforced by a multitude of seams, for example, parallel to one another. EP 0 668 336 A1, for example, describes such an adhesive tape. The advantage is that, due to the structure on the top surface of the seamed backing, which has a multitude of adjacent valleys and ridges, the adhesive tape can be wound and unwound even without a separating layer between different layers of the tape.

[0008] From DE 44 42 092 A1 it is known that the adhesive effect is also impaired if the adhesive tape is used to wrap the object to be wrapped in multiple layers or to completely cover it, so that the adhesive tape is at least partially oriented on itself. To increase this adhesive effect, it is proposed to provide the adhesive tape with an additional layer of foam, which is covered by a layer of lacquer.

[0009] Adhesive tapes are used for a wide variety of applications. For example, EP 3 037 493 A1 discloses an adhesive tape with a backing based on a sewn nonwoven fabric, in which special materials are used for the at least one knitted yarn that creates the seams. This allows temperature resistance up to 175 °C to be achieved and / or the mechanical properties and strengths to be increased. Special knitting technologies are also described, such as the "Maliwatt" technology, in which a raw nonwoven fabric, formed as a pre-laid cross-laminated fiber mat or a nonwoven fabric, is sewn together by one or two yarn systems. In this process, the knitted yarn completely penetrates the nonwoven fabric, thus coming into contact with the adhesive layer on the underside of the backing and forming connecting loops on the top side.From EP 4 092 092 A1, various materials are known that can be used for the textile carrier, i.e. the nonwoven fabric.

[0010] In many applications, adhesive tapes are supplied as a roll that is moved around the object to wrap it. The object itself is often not completely free to move, but rather positioned in a confined space where the tape, and therefore the roll, must be maneuvered. This limits the maximum thickness of the roll, i.e., its diameter. Consequently, the maximum length of tape that can be wound onto a roll is also limited. Naturally, it is advantageous to maximize this length to minimize the frequency of roll changes. This is particularly relevant for automated application processes where the product is mechanically wrapped with the tape.

[0011] There are essentially two ways to use adhesive tape for wrapping elongated items, such as cable harnesses. In the first method, the tape is applied to the elongated item in a helical motion. This results in the shape of a helix (also called a screw, helical spiral, cylindrical spiral, or helix; a helix is ​​a curve that winds around the surface of a cylinder with a constant pitch). In the second method, the elongated item is wrapped axially with the tape. The wrapping of a cable harness with the described tape is not helical, but rather such that, during wrapping, a longitudinal axis of the tape is essentially parallel to the direction of travel of the cable harness. In cross-section, the tape lies around the cable harness in the form of an Archimedean spiral. This type of wrapping is also called "wrapping the cable harness."

[0012] When winding a cable assembly helically, the adhesive tape can be applied around the elongated component with varying degrees of overlap, from no overlap at all to almost complete overlap. For example, the tape can be applied to the underlying winding layer by 20% or 50% of its width. Preferably, the tape is wound so that there is no overlap with the underlying winding layer, allowing the edges of the tape to touch, ideally forming a continuous tube. A gap can also be provided between the individual windings, preferably a gap that is at least 0.5 times, preferably at least 1 time, and at most 10 times, preferably at most 5 times, the width of the (optionally stretched) adhesive tape applied to the component.

[0013] Particularly when the adhesive tape does not need to completely encircle the object, i.e., wrap around it without overlapping, it is also advantageous if the width of the adhesive tape is as small as possible, for example between 1 mm and 7 mm, preferably 2 mm to 5 mm. However, a disadvantage is that such narrow rolls of adhesive tape are difficult or impossible to handle and are therefore very rarely used.

[0014] The invention is based on the objective of further developing an adhesive tape roll in such a way that it needs to be changed as infrequently as possible and the adhesive tape can be used as efficiently as possible for wrapping an object.

[0015] This problem is solved by an adhesive tape as described in the main claim. The dependent claims relate to advantageous embodiments of the adhesive tape and methods for applying the adhesive tape.

[0016] Accordingly, the invention relates to an adhesive tape, in particular for longitudinal sheathing of elongated goods such as cable sets in an automobile, wherein the adhesive tape comprises a) a front first end, b) a rear second end, c) a longitudinal direction extending from the first end to the second end, d) a textile carrier with a top and a bottom, e) an adhesive compound applied to the underside of the carrier and f) at least one knitting thread and / or at least one sewing thread arranged in such a manner, g) that it comes into contact with the adhesive on the underside of the carrier and h) forms a plurality of adjacent connecting loops on the upper side.

[0017] A loop, as defined in the present invention, is a section of the knitted yarn that exits the top surface of the textile substrate at an exit point and re-enters the top surface of the textile substrate at an entry point. The length of the knitted yarn between the exit point and the entry point is greater than the distance between the two points along the top surface of the textile substrate.

[0018] A plurality of these loops extend through a loop adjacent to the second end. These loops are hereinafter referred to as connecting loops because they connect a loop with at least one adjacent loop. It is essential to the invention that each connecting loop extends through at least one adjacent connecting loop in the direction of the second end and that the connecting loops are arranged such that the loop opening of each individual connecting loop points towards the second end and the actual loop (the noose) of each individual connecting loop points towards the first end. This loop can itself be a connecting loop if it in turn extends through its adjacent loop in the direction of the second end.

[0019] When the tape is wound onto a roll or spool as usual, the front end of the tape is the end that is gripped when pulling the tape off. The rear end of the tape is the end that remains on the roll or spool during the unwinding process.

[0020] Each connecting loop therefore passes through at least one, preferably exactly one, adjacent connecting loop. This design means that the connecting loop can be pulled out of its adjacent connecting loop, which could also be called a neighboring loop, if a sufficient force is applied in the correct direction. This is only possible if the connecting loop is not itself an adjacent loop, i.e., if no other loop passes through it. The connecting loops form at least one chain of loops, with the first connecting loop of this chain, which can also be called the starting loop, being the connecting loop located closest to the first end of the adhesive tape. Consequently, only this starting loop extends through a connecting loop without any other connecting loop extending through it.This initial loop can therefore be pulled out of its adjacent connecting loop. The chain of loops extends in the direction of the longitudinal extent of the adhesive tape, with the loop opening of each individual connecting loop essentially pointing towards the second end and the loop of each individual connecting loop pointing towards the first end. Preferably, the adhesive tape has several chains of loops running parallel to each other. If the chains of loops are arranged in a zigzag pattern, the loop opening of each individual connecting loop is closer to the second end and the loop of each individual connecting loop is closer to the first end.

[0021] According to the invention, knitted fabrics, i.e., textile structures produced by the mesh formation of interwoven yarns in a sheet-like base material, are preferred as textile carriers. Particularly preferred are nonwoven knitted fabrics, i.e., textile structures with a fiber fleece as the base material, which are bonded by the mesh formation of interwoven yarns (also known as Maliwatt).

[0022] Preferably, nonwovens in the form of consolidated staple fiber nonwovens or filament, meltblown or spunbond nonwovens are used as the textile carrier, which are additionally reinforced mechanically by sewing in threads.

[0023] In addition to consolidation, thermal and chemical processes such as adhesive (with binder) or cohesive (binder-free) methods can also be used to achieve fiber-fiber bonds. With suitable formulation and process control, these can be limited exclusively or at least predominantly to fiber nodes, so that a stable, three-dimensional network is formed while maintaining the loose, open structure of the nonwoven fabric.

[0024] The sewing fabrics that can be used as carriers according to the invention also include yarn-layered sewing fabrics, i.e., textile fabrics with one or more superimposed yarn layers as a base material, which are solidified by the formation of loops by interwoven knitting threads, for example, Florofol; pile-threaded sewing fabrics, i.e., textile fabrics in which knitting threads are formed as piles and interwoven into a base material by means of loop formation, for example, Malipol; and weft-pile sewing fabrics, i.e., textile fabrics in which unmesh-formed threads are attached to a base material by means of loop formation by interwoven knitting threads, for example, weft pole.

[0025] According to the invention, nonwoven fabrics are particularly preferred, i.e. textile fabrics which are produced by forming loops of interwoven yarns in a flat base material.

[0026] A non-woven fabric is made from a non-woven material with a large number of parallel seams. These seams are created by sewing or knitting continuous textile threads.

[0027] In the production of nonwoven fabrics, staple fiber nonwovens or filament, meltblown or spunbond nonwovens are additionally mechanically reinforced by sewing in additional threads.

[0028] Staple fiber nonwovens can be oriented nonwovens, meaning nonwovens in which the fibers are strongly oriented in one direction. In longitudinal nonwovens (longitudinally laid nonwovens), the majority of the fibers lie in the longitudinal direction of the produced nonwoven (in the machine direction of the production line, MD). In transverse nonwovens (cross-laid nonwovens), the majority of the fibers lie in the transverse direction (CD). This MD / CD ratio is very often used to characterize nonwovens. In cross-laid nonwovens, the fibers are preferably oriented in two directions by layering individual fiber laminations or nonwovens with longitudinally oriented fibers to form the overall nonwoven using cross-layers.In random lay nonwovens (often also referred to simply as random lay nonwovens or random lay nonwovens), the spun fibers or filaments can take any direction, meaning they are distributed relatively evenly in all directions of the nonwoven.

[0029] Spunbond nonwovens are textile fabrics made from directly extruded or nozzle-spun chemical threads, whose filaments are stretched, opened, entangled and mechanically, thermally or chemically bonded to form a nonwoven in the same operation.

[0030] Continuous filaments are produced from a polymer melt through a spinneret using a hot air stream and laid down on a conveyor belt. The turbulence of the continuous filaments during deposition forms a nonwoven fabric. For consolidation, the nonwoven fabric is then preferably thermally bonded using a heated calender. Various embossing geometries can be used, such as diamond or rice grain patterns.

[0031] Consolidation after the continuous filaments are laid down can be achieved alternatively or additionally to thermal treatment by air or water jets. Consolidation solely by water jets can produce a much more "textile-like" nonwoven than calendering, since the water jets do not cause the fibers to melt excessively, but rather interlace them, resulting in at least a partially perpendicular alignment of the filament fibers. The resulting textile is called a water jet-bonded spunbond nonwoven.

[0032] In the Fig. Figure 6 shows a nonwoven fabric (31), or nonwoven for short.

[0033] In the first step, a base nonwoven (32) in the form of a staple fiber nonwoven or a filament, meltblown, or spunbond nonwoven is laid down. When the base nonwoven (32) is overstitched with sewing threads (33), an overstitched nonwoven layer is created, with a loop chain (34) forming on the underside of the nonwoven layer and a chain of loops (35) forming on the top side. The loops (36) within the loop chain (34) are arranged such that in the machine direction MD v of the fleece (31), i.e. the direction in which the fleece (31) is conveyed from the knitting machine, the loop opening (37) is located in front of the actual loop (38), i.e. the loop.

[0034] In the Fig. Figure 7 shows how an adhesive tape (41) is produced from the nonwoven sewing fabric (31).

[0035] After overstitching, the resulting nonwoven fabric (31) is first wound into a roll in the form of an Archimedean spiral or into a spool.

[0036] To produce an adhesive tape (41), the nonwoven sewing fabric (31) is fed in the machine direction MD. kb The adhesive tape (41) is unwound and coated with an adhesive layer (42) on the side of the nonwoven fabric (31) on which the chain of mesh bars (35) is located. The adhesive tape (41) is wound up. The left end is thus the front first end, and the right end is the rear second end.

[0037] When unwinding from the roll or spool, the adhesive tape (41) is unwound in the pull-off direction AR.

[0038] In the prior art, as disclosed, for example, in EP 0 668 336 A1, such nonwoven sewing fabrics are coated with an adhesive layer on the smoother side of the nonwoven, i.e., on the side where the loop chains are located. According to the invention, the side of the nonwoven is coated on which the chains of the mesh webs are located.

[0039] Such consolidated nonwovens are produced, for example, on "Malimo" type sewing and knitting machines from the company Karl Mayer, formerly Malimo, and are available from companies such as Tenowo GmbH and are known, for example, as "Maliwatt".

[0040] In a Maliwatt, the base material is preferably a transverse nonwoven (for example, made of wool fibers, polymer fibers, or recycled textile fibers) or a spunbond nonwoven. The mechanical bonding of the base material to form the Maliwatt product is achieved by creating a mesh of numerous parallel, interwoven warp threads. Preferably, the thread count is between 20 and 40 threads per 25 mm of the substrate width, and particularly preferably 30 threads per 25 mm.

[0041] Further preferred are the knitting or sewing threads yarns, twisted yarns, smooth or textured filament threads and / or made of polyester, polypropylene, polyethylene or polyamide.

[0042] The sewing thread can be applied in a fringed weave or a tricot weave.

[0043] The thread thickness is preferably 20 to 70 dtex.

[0044] Staple fibers are individual fibers whose length is limited. The opposite of staple fibers are filaments (continuous fibers). All natural fibers are staple fibers, as they only occur up to a certain length. All synthetic fibers can be cut to create staple fibers. In the following, staple fibers will simply be referred to as fibers.

[0045] Suitable starting materials for the adhesive tape backing include, in particular, (chemical) fibers (staple fibers) made of synthetic polymers, also called synthetic fibers, such as polyester, polyamide, polyimide, aramid, polyolefin, polyacrylonitrile, or glass; (chemical) fibers made of natural polymers such as cellulosic fibers (viscose, modal, lyocell, cupro, acetate, triacetate, cellulon), such as rubber fibers, such as plant protein fibers and / or such animal protein fibers; and / or natural fibers made of cotton, sisal, flax, silk, hemp, linen, coconut, or wool. However, the present invention is not limited to the aforementioned materials; rather, a multitude of other fibers can be used to produce the backing, as is evident to those skilled in the art without requiring any inventive step.

[0046] Preferably, the carrier comprises fibers made of polyester, polypropylene, polyethylene or polyamide.

[0047] The fiber thickness is preferably 1 to 5 dtex (1 tex: 1 gram per 1,000 meters), preferably 1.7 to 3.6 dtex.

[0048] The fiber length is preferably 50 to 100 mm, preferably 60 to 85 mm.

[0049] Preferably, a nonwoven sew-knit carrier can be used as a support, which is made from a pre-bonded pre-fleece (the textile carrier pre-stage) made of staple fibers, wherein the threads running parallel to each other are sewn into the pre-fleece, so that the finished nonwoven sew-knit carrier is created, wherein the maximum tensile force in the longitudinal direction of the pre-bonded, but not yet over-sewn pre-fleece is less than 2 N / cm, preferably less than 1 N / cm, particularly preferably less than 0.5 N / cm.

[0050] According to one variant, the pre-fleece has a maximum tensile strength in the longitudinal direction preferably of 0.2 to 20 N / cm, particularly preferably 0.5 to 15 N / cm, more preferably 1.0 to 10 N / cm.

[0051] The pre-fleece preferably has an elongation at break of 100% or more, particularly preferably 200% or more, and most preferably 300% or more. The maximum tensile strength in the longitudinal direction and the elongation at break are determined according to DIN EN 29073-3 (August 1992).

[0052] The staple fiber fabric can be pre-stiffened by needling before sewing, with a needling density advantageously being 1 needle / cm². 2 Staple fiber fabrics up to 50 needles / cm² 2 staple fiber fabric is.

[0053] The needle density should be less than 50 needles / cm². 2 This is because each pinning point makes the fiber orientation isotropic. If the number of pinning points is too high, the preferred orientation in the transverse direction achieved by the cross-lamination is significantly reduced or even eliminated.

[0054] Furthermore, by pre-consolidating the base nonwoven, the number of overlock threads per 25 mm of backing can be reduced to below 30 threads / 25 mm width of the backing without tearing fibers from the reverse side when the adhesive tape is unwound. Preferably, the thread count is between 10 and 24 threads / 25 mm width of the backing, and particularly preferably 22 threads / 25 mm.

[0055] This nonwoven fabric support can be produced in a two-stage process, whereby the overstitching of the pre-bonded nonwoven fabric takes place in a separate process step.

[0056] The nonwoven fabric backing can also be produced in a single-stage process by overstitching the pre-bonded nonwoven fabric inline.

[0057] Furthermore, calendering the nonwoven backing can compact the nonwoven fabric, which can positively affect its uniformity and the required adhesive application. Calendering refers to the compression of the nonwoven fabric between two rollers under pressure and possibly elevated temperature.

[0058] Advantageously, and at least in certain areas, the carrier can have a surface that is ground smooth on one or both sides, preferably a fully ground smooth surface on each side. The ground smooth surface may be chintzed, as is explained in detail, for example, in EP 1 448 744 A1.

[0059] Furthermore, the beam can be calendered in a rolling mill for compaction. Preferably, the two rolls rotate in opposite directions and at the same circumferential speed, so that the beam is pressed and compacted.

[0060] If the peripheral speed of the rollers differs, then the carrier is additionally ground smooth.

[0061] According to a preferred embodiment of the invention, the basis weight of the textile carrier, preferably the nonwoven knit carrier, is between 30 g / m². 2 and 300 g / m² 2 , particularly preferably between 70 and 200 g / m² 2 .

[0062] To produce an adhesive tape from the backing material, all known adhesive systems can be used. In addition to natural or synthetic rubber-based adhesives, silicone adhesives and polyacrylate adhesives, preferably a low-molecular-weight acrylate hot melt adhesive, are particularly suitable.

[0063] Preferably, the adhesive is a pressure-sensitive adhesive, meaning an adhesive that allows a permanent bond to almost all substrates even under relatively light pressure and can be removed from the substrate essentially without leaving any residue after use. A pressure-sensitive adhesive remains permanently tacky at room temperature, exhibiting a sufficiently low viscosity and high initial tackiness so that it wets the surface of the respective substrate even with minimal pressure. The adhesive's bonding ability is based on its adhesive properties, and its removability on its cohesive properties.

[0064] Pressure-sensitive adhesives can be considered extremely viscous liquids with an elastic component. Consequently, they possess special, characteristic viscoelastic properties that result in their permanent tackiness and bonding ability.

[0065] A characteristic feature of these adhesives is that, when mechanically deformed, both viscous flow processes and the development of elastic restoring forces occur. The respective proportions of these two processes are in a specific ratio to each other, depending on the precise composition, structure, and degree of cross-linking of the respective pressure-sensitive adhesive, as well as the speed and duration of the deformation and the temperature.

[0066] The proportion of viscous flow is necessary to achieve adhesion. Only the viscous components, caused by macromolecules with relatively high mobility, enable good wetting and flow onto the substrate to be bonded. A high proportion of viscous flow leads to high tack (also known as surface tack) and thus often also to high adhesive strength. Highly cross-linked systems, crystalline or glassy polymers, are generally not tacky or at least only slightly tacky due to a lack of flowable components.

[0067] The elastic restoring forces are necessary to achieve cohesion. They are generated, for example, by very long-chain and highly entangled macromolecules, as well as by physically or chemically cross-linked macromolecules, and enable the transmission of forces acting on an adhesive bond. This allows an adhesive bond to withstand a sustained load, such as continuous shear stress, to a sufficient degree over an extended period.

[0068] A particularly preferred pressure-sensitive adhesive is in the form of a dried polymer dispersion, wherein the polymer is composed of: (a) 95.0 to 100.0 wt% n-butyl acrylate and / or 2-ethylhexyl acrylate (b) 0.0 to 5.0 wt.% of an ethylene unsaturated monomer with an acid or acid anhydride function

[0069] Preferably, the polymer consists of 95.0 to 99.5 wt.% n-butyl acrylate and / or 2-ethylhexyl acrylate and 0.5 to 5 wt.% of an ethylene unsaturated monomer with an acid or acid anhydride function, further preferably of 97.0 or 98.0 wt.% to 99.0 wt.% n-butyl acrylate and / or 2-ethylhexyl acrylate and 1.0 to 2.0 wt.% or 3 wt.% of an ethylene unsaturated monomer with an acid or acid anhydride function.

[0070] In addition to the listed acrylate polymers, the pressure-sensitive adhesive may contain tackifiers and / or additives such as light stabilizers or antioxidants, as well as any residual monomers that may be present. In particular, no other polymers such as elastomers are contained in the pressure-sensitive adhesive; that is, the polymers of the pressure-sensitive adhesive consist only of monomers (a) and (b) in the specified proportions.

[0071] n-Butyl acrylate preferentially forms the monomer (a).

[0072] Advantageously suitable monomers (b) include, for example, acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid and / or maleic anhydride.

[0073] (Meth-)acrylic acid of formula I is preferred, where R 3 = H or CH3, preferably a mixture of acrylic acid or methacrylic acid is used. Acrylic acid is particularly preferred.

[0074] According to a particularly preferred variant, the polymer has the following composition: (a) 95.0 to 100.0 wt.%, preferably 95.0 to 99.5 wt.%, further preferably 98.0 to 99.0 wt.% n-butyl acrylate and (b) 0.0 to 5.0 wt.%, preferably 0.5 to 5.0 wt.%, further preferably 1.0 to 2.0 wt.% acrylic acid

[0075] The polymer dispersion is produced by the emulsion polymerization process of the aforementioned components. Descriptions of this process can be found, for example, in "Emulsion Polymerization and Emulsion Polymers" by Peter A. Lovell and Mohamed S. El-Aasser - Wiley-VCH 1997 - ISBN 0-471-96746-7 or in EP 1 378 527 B1.

[0076] During polymerization, it is possible that not all monomers will be converted into polymers. Therefore, it is advisable to keep the residual monomer content as low as possible.

[0077] Preferably, adhesive compositions comprising the polymer dispersion with a residual monomer content of less than or equal to 1 wt.%, in particular less than or equal to 0.5 wt.% (based on the mass of the dried polymer dispersion) are provided.

[0078] According to general professional understanding, an "adhesive resin" is understood to be an oligomeric or polymeric resin that increases the self-adhesion (the tack, the inherent stickiness) of the pressure-sensitive adhesive compared to a pressure-sensitive adhesive that does not contain an adhesive resin but is otherwise identical.

[0079] The use of tackifiers to increase the adhesive strength of pressure-sensitive adhesives is generally known. This effect also occurs when up to 15 parts by weight (corresponding to < 15 parts by weight) or 5 to 15 parts by weight of tackifier (based on the mass of the dried polymer dispersion) are added to the adhesive. Preferably, 5 to 12, and more preferably 6 to 10 parts by weight of tackifier (based on the mass of the dried polymer dispersion) are added.

[0080] In principle, all known classes of substances are suitable as tackifiers, also known as adhesive resins. Tackifiers include, for example, hydrocarbon resins (e.g., polymers based on unsaturated C5 or C9 monomers), terpene phenolic resins, polyterpene resins based on raw materials such as α- or β-pinene, aromatic resins such as coumaron-indene resins, or resins based on styrene or α-methylstyrene such as rosin and its derivatives, for example, disproportionated, dimerized, or esterified rosin, for example, reaction products with glycol, glycerol, or pentaerythritol, to name just a few. Resins without easily oxidizable double bonds are preferred, such as terpene phenol resins, aromatic resins, and especially resins produced by hydrogenation, such as hydrogenated aromatic resins, hydrogenated polycyclopentadiene resins, hydrogenated rosin derivatives, or hydrogenated polyterpene resins.

[0081] Preferred resins are those based on terpene phenols and rosin esters. Also preferred are adhesive resins with a softening point above 80 °C according to ASTM E28-99 (2009). Particularly preferred are resins based on terpene phenols and rosin esters with a softening point above 90 °C according to ASTM E28-99 (2009). The resins are advantageously used in dispersion form. This allows them to be easily and finely dispersed in the polymer dispersion.

[0082] The variant in which no adhesive resins are added to the pressure-sensitive adhesive is particularly preferred.

[0083] The following substances, in particular, shall not be added to the adhesive compound: • Hydrocarbon resins (for example, polymers based on unsaturated C5 or C9 monomers) • Terpene phenol resins • Polyterpene resins based on raw materials such as α- or β-pinene • Aromatic resins such as coumaron-indene resins or resins based on styrene or α-methylstyrene such as rosin and its derivatives, for example disproportionated, dimerized or esterified rosin, for example reaction products with glycol, glycerol or pentaerythritol

[0084] Due to their particular suitability as adhesives for wrapping tapes of automotive cable sets with regard to their fogging resistance and excellent compatibility with PVC and PVC-free conductor insulations, solvent-free acrylate hot melt compounds are preferable, as described in more detail in DE 198 07 752 A1 and in DE 100 11 788 A1.

[0085] Fogging (see DIN 75201 A) refers to the effect that, under unfavorable conditions, low-molecular-weight compounds can outgas from adhesive tapes and condense on cold surfaces. This can, for example, impair visibility through the windshield.

[0086] A suitable adhesive compound is one based on acrylate hot melt, which has a K-value of at least 20, in particular greater than 30 (measured in 1 wt% solution in toluene, 25°C), obtainable by concentrating a solution of such a compound to a system that can be processed as a hot melt.

[0087] The K-value (according to Fikentscher) is a measure of the average molecular size of high-polymer substances. The determination of the viscosity of polymers using a capillary viscometer is carried out according to DIN EN ISO 1628-1:2012-010.

[0088] For measurement, one percent (1 g / 100 ml) toluene polymer solutions are prepared at 25 °C and measured using the corresponding DIN Ubbelohde viscometer according to ISO 3105:1994, Table B.9.

[0089] Concentration can take place in appropriately equipped boilers or extruders; a degassing extruder is preferred, especially for the associated degassing.

[0090] Such an adhesive compound is described in DE 43 13 008 C2. In an intermediate step, the solvent is completely removed from these acrylate compounds produced in this way.

[0091] In addition, further volatile components are removed. After coating from the melt, these masses contain only small amounts of volatile components. Thus, all monomers / formulations claimed in the patent mentioned above can be used.

[0092] The solution of the mass can contain 5 to 80 wt.%, in particular 30 to 70 wt.% solvent.

[0093] Preferably, commercially available solvents are used, in particular low boiling hydrocarbons, ketones, alcohols and / or esters.

[0094] Preferably, single-screw, twin-screw or multi-screw extruders with one or, in particular, two or more degassing units are used.

[0095] The acrylate hot melt-based adhesive may contain incorporated benzoin derivatives, such as benzoin acrylate or benzoin methacrylate, acrylic acid esters, or methacrylic acid esters. Such benzoin derivatives are described in EP 0 578 151 A. The acrylate hot melt-based adhesive can be UV-cured. Other curing methods are also possible, for example, electron beam curing.

[0096] In a further preferred embodiment, copolymers of (meth)acrylic acid and its esters with 1 to 25 C atoms, maleic, fumaric and / or itaconic acid and / or their esters, substituted (meth)acrylamides, maleic anhydride and other vinyl compounds, such as vinyl esters, in particular vinyl acetate, vinyl alcohols and / or vinyl ethers, are used as self-adhesive materials.

[0097] The residual solvent content should be less than 1% by weight.

[0098] One adhesive that has proven particularly suitable is a low-molecular-weight acrylate hot melt adhesive, such as that marketed by BASF under the names acResin UV or Acronal®, especially acResin A 260UV. This adhesive with a low K-value achieves its application-specific properties through a final radiation-induced crosslinking process.

[0099] Other highly suitable adhesives are described in EP 3 540 024 A1, EP 2 520 627 A1, EP 2 522 705 A1, EP 2 520 628 A1, EP 2 695 926 A1 and EP 2 520 629 A1.

[0100] Preferably, the adhesive coating consists of a synthetic rubber-based adhesive, specifically an adhesive composed of at least one vinyl aromatic block copolymer and at least one adhesive resin. Typical concentrations of the block copolymer are in the range of 30 wt% to 70 wt%, particularly between 35 wt% and 55 wt%.

[0101] Other polymers that may be present include those based on pure hydrocarbons, such as unsaturated polydienes like natural or synthetically produced polyisoprene or polybutadiene; chemically essentially saturated elastomers, such as saturated ethylene-propylene copolymers, α-olefin copolymers, polyisobutylene, butyl rubber, ethylene-propylene rubber; and chemically functionalized hydrocarbons, such as halogen-containing, acrylate-containing, or vinyl ether-containing polyolefins, which can replace up to half of the vinylaromatic-containing block copolymers.

[0102] The adhesives used are resins that are compatible with the elastomer block of the styrene block copolymers.

[0103] Plasticizing agents such as liquid resins, plasticizing oils or low molecular weight liquid polymers such as low molecular weight polyisobutylenes with molar masses < 1500 g / mol (number averages) or liquid EPDM types are typically used.

[0104] Further additives that can be added to all the aforementioned types of adhesives include light stabilizers such as UV absorbers, sterically hindered amines, antiozonants, metal deactivators, processing aids, and end-block reinforcing resins.

[0105] Fillers such as silicon dioxide, glass (ground or in the form of solid or hollow spheres), microballoons, aluminum oxides, zinc oxides, calcium carbonates, titanium dioxides, carbon blacks, silicates and chalk, to name just a few, as well as color pigments and dyes and optical brighteners can also be used.

[0106] Adhesive compounds typically contain primary and secondary antioxidants to improve their aging stability. Primary antioxidants react with oxy- and peroxyradicals, which can form in the presence of oxygen, and convert them to less reactive compounds. Secondary antioxidants, for example, reduce hydroperoxides to alcohols. A synergistic effect exists between primary and secondary antioxidants, so the protective effect of a mixture is often greater than the sum of the two individual effects.

[0107] If flame retardancy of the described adhesive tape is desired, this can be achieved by adding flame retardants to the backing and / or the adhesive compound. These can be organobrominated compounds, if necessary with synergists such as antimony trioxide; however, with regard to the halogen-free nature of the adhesive tape, red phosphorus, organophosphorus, mineral or intumescent compounds such as ammonium polyphosphate, alone or in combination with synergists, are preferred.

[0108] The production and processing of pressure-sensitive adhesives can be carried out from solution, dispersion, or molten state. Preferential production and processing methods involve molten material. For the latter case, suitable production processes include both batch and continuous processes.

[0109] The adhesive application rate, based on the adhesive tape surface area, is preferably between 40 and 160 g / m². 2, preferably between 60 and 130 g / m² 2 , preferably between 80 and 100 g / m² 2 lies (corresponding to a thickness of approximately 40 to 160 µm, preferably 60 to 130 µm, more preferably 80 to 100 µm).

[0110] The adhesive can be applied longitudinally along the adhesive tape in the form of a strip that is narrower than the tape's backing. In an advantageous embodiment, the coated strip has a width of 10 to 80% of the backing material's width. Strips with a coating width of 20 to 50% of the backing material's width are particularly preferred. Depending on the application, several parallel strips of adhesive can also be coated on the backing material. The strip's position on the backing is freely selectable, with an arrangement directly at one of the backing material's edges being preferred.

[0111] The adhesives can be manufactured and processed from solution, dispersion, or melt. Preferred manufacturing and processing methods involve both solution and melt production. Melt production is particularly preferred, especially using batch or continuous processes. Continuous production of the pressure-sensitive adhesives using an extruder is especially advantageous.

[0112] The adhesives produced in this way can then be applied to the substrate using generally known methods. When processed from the melt, these can be application methods via a nozzle or a calender.

[0113] Solution-based processes include coatings using squeegees, knives, or nozzles, to name just a few.

[0114] It is also possible to transfer the adhesive mass from an anti-adhesive backing sheet or release liner to the substrate.

[0115] Finally, the adhesive tape can have a backing material that covers one or two layers of adhesive until use. All the materials listed in detail above are also suitable as backing materials.

[0116] However, a non-linting material such as a plastic film or a well-glued, long-fiber paper is preferred.

[0117] If flame retardancy of the described adhesive tape is desired, this can be achieved by adding flame retardants to the backing and / or the adhesive compound. These can be organobrominated compounds, if necessary with synergists such as antimony trioxide; however, with regard to the halogen-free nature of the adhesive tape, red phosphorus, organophosphorus, mineral or intumescent compounds such as ammonium polyphosphate, alone or in combination with synergists, are preferred.

[0118] A backing lacquer may be applied to the reverse side of the adhesive tape to improve its unwinding properties when wound into an Archimedean spiral. This backing lacquer may contain silicone or fluorosilicone compounds, as well as polyvinylstearyl carbamate, polyethyleneiminestearyl carbamate, or organofluoro compounds as adhesive agents. Optionally, a foam coating may be applied to the back of the adhesive tape beneath the backing lacquer or, alternatively, instead.

[0119] For the purposes of this invention, the general term "adhesive tape" encompasses all planar structures whose dimensions in two spatial directions (x-direction and y-direction; length and width) are significantly greater than in the third spatial direction (z-direction; thickness), such as tapes with extended length and limited width, tape sections, and the like. The adhesive tape is particularly available in roll form. A roll is understood to be an object whose length is many times greater than its width.

[0120] The adhesive tape thus has a longitudinal and a lateral extent. The tape also has a thickness perpendicular to both of these extents, with the lateral and longitudinal extents being many times greater than the thickness. The thickness of the backing is as uniform as possible, preferably exactly uniform, across the entire surface area of ​​the adhesive tape, defined by its length and width. Only in the area of ​​the reinforcing elements does the adhesive tape have a greater thickness.

[0121] According to the invention, the variant of the adhesive tape equipped with adhesive on one side is preferred.

[0122] Preferably, the adhesive tape is used for wrapping elongated goods such as cable sets, in particular by applying the adhesive tape in a helical spiral around the elongated goods.

[0123] Preferably, the adhesive tape is wound so that there is no overlap with the layer of tape underneath, so that the edges of the tape touch, ideally forming a closed tube. Further preferably, the adhesive tape is wound so that a gap is provided between the individual windings, preferably with a gap that is at least 0.5 times, particularly preferably at least 1 time and at most 10 times, most preferably at most 5 times, the width of the (optionally stretched) adhesive tape applied to the product.

[0124] The adhesive tape can be used particularly advantageously for the automated wrapping of cable harnesses.

[0125] The cable harnesses to be wound are selected according to production requirements. The harnesses are inserted into the winding machine manually or via a feeding system and secured. The adhesive tape is then clamped into the machine and adjusted to the correct tension.

[0126] The machine is programmed to meet the specific requirements of the winding process, such as winding density, number of turns, and tape positioning. These settings can be saved for different cable harness types and recalled as needed.

[0127] The machine begins the wrapping process by wrapping the tape around the wiring harness. The harness or the wrapping device rotates to ensure the tape is applied evenly and tightly. The harness is continuously fed through the machine while the tape is applied in a uniform spiral.

[0128] Sensors monitor the winding process to ensure the tape is correctly positioned and tensioned. The machine can automatically make adjustments to correct deviations and guarantee even winding.

[0129] Once the winding process is complete, the adhesive tape is automatically cut. The finished cable harness is then removed from the machine, either manually or via an automated removal system.

[0130] In summary, automated cable harness winding offers high precision and efficiency, reduces labor costs and minimizes errors compared to manual methods.

[0131] Finally, the inventive concept also includes an elongated product encased in an adhesive tape according to the invention. Preferably, the elongated product is a cable set.

[0132] According to the state of the art, sewing fabrics such as nonwoven sewing fabrics are coated in such a way that the initial loop of a loop chain, which can be pulled out of its adjacent connecting loop, is always located at the rear second end of the adhesive tape. Each connecting loop thus runs through a connecting loop adjacent to the first end. This ensures that a tensile force or tension applied, for example, when unwinding the adhesive tape, cannot damage the loop chain. The machine direction MD v The nonwoven fabric runs in such a way that MD runs in the machine direction. v When considering the nonwoven fabric, the loop opening is always located behind the loop, while the machine direction MD kb the adhesive tape runs in such a way that MD runs in the machine direction kb Looking at the adhesive tape, the loops lie behind the loop opening.

[0133] This differs in the present invention. According to the invention, each connecting loop passes through at least one, preferably exactly one, adjacent connecting loop in the direction of the second end. This ensures that the initial loop, i.e., the loop of the chain of loops that is located closest to the first end of the adhesive tape, can be removed from the adjacent connecting loop.

[0134] The machine direction MD v The nonwoven fabric continues to run in such a way that MD runs in the machine direction. v When considering the nonwoven fabric, the loop opening is always located behind the loop, while the machine direction MD KB the adhesive tape is rotated by 180° and runs in such a way that MD is in the machine direction kb When considering the adhesive tape, the loops lie in front of the loop opening.

[0135] This preferably results in the removal of the initial loop of the adjacent connecting loop by applying a longitudinal tensile stress to the section of tape containing the initial loop. This can be achieved, for example, by applying a tensile force to the first end of the tape and holding the remaining part of the tape roll in place so that the tape cannot be unwound further.

[0136] The portion of the at least one knitting thread or at least one sewing thread that comes into contact with the adhesive on the underside of the carrier preferably extends in a straight line along the underside of the carrier, this straight line preferably extending longitudinally along the adhesive tape. On the opposite upper side of the carrier, the at least one knitting thread or at least one sewing thread forms the connecting loops. Once one of the connecting loops has been removed or pulled out of its adjacent connecting loop, the adhesive tape can be extended in this area if sufficient tensile stress is applied longitudinally along the adhesive tape. The respective knitting thread or sewing thread exits the textile carrier at an exit point and re-enters the textile carrier at another point, which is referred to as the entry point.The length of the knitted thread between the exit point and the entry point is greater than the distance between the two points, which is why the knitted or sewing thread forms the connecting loop. If a sufficiently large tensile stress is now applied longitudinally to this area of ​​the adhesive tape, the tape, and in particular the textile backing with the adhesive compound applied to its underside, is stretched. The distance between the exit point and the entry point increases until it equals the length of the knitted or sewing thread between these two points. Only then is further stretching and elongation of the adhesive tape strip in this area no longer possible.

[0137] Once the initial loop has been removed from its adjacent connecting loop, this adjacent connecting loop becomes the new initial loop and can, in turn, be removed from its connecting loop adjacent to the second end. Therefore, if sufficient longitudinal tension is maintained while unwinding the adhesive tape from the roll, the free portion already unwound from the roll can be irreversibly stretched in this way. This not only increases the length of the free portion but also reduces its width; the adhesive tape becomes narrower. The width of the narrowed adhesive tape, compared to the original width, can decrease to up to 90%, preferably up to 75%, and more preferably to up to 50% (i.e., half the original width).

[0138] In this state, the adhesive tape is then put to its actual use, for example, wrapping an object.

[0139] In the Fig. 8 and Fig. Figure 9 shows two variants for the helical wrapping of a cable harness (consisting of two cables (51, 52) for the sake of simplicity) with the narrowed adhesive tape (41) according to the invention.

[0140] In the Fig. 8 the adhesive tape (41) according to the invention is guided in a simple wrapping around the cables (51, 52).

[0141] In the case of the double, counter-rotating winding in the Fig. 9, however, intersection points (44) with the adhesive tape (41) result, in which two layers of adhesive tape (41) stick together and thus guarantee a particularly secure connection of the cables (51, 52).

[0142] The invention thus makes it possible to increase the length of the wound adhesive tape before actual use while simultaneously reducing its width. This results in a significantly greater length in the stretched state than the actual running length of the adhesive tape roll in the unstretched state, without affecting the diameter of the adhesive tape roll.

[0143] The elongation caused by tensile stress is not completely elastic, so that the adhesive tape does not return to its original length after the stress is removed, i.e., when the tape is removed from the material. The elongation may have an elastic component, but is preferably not completely elastic. Therefore, it cannot be completely reversed by the removal of the stress.

[0144] Preferably, the wound adhesive tape forms an adhesive tape roll or a spool. Preferably, the plurality of adjacent connecting loops forms at least one, preferably several, for example two, three or four, chains of loops extending longitudinally along the adhesive tape.

[0145] Both possible forms of wound adhesive tape, i.e., tape rolls and tape spools, are possible embodiments of the present invention. The adhesive tapes according to the present invention are preferably used in widths of 9 to 50 mm, particularly 19 to 25 mm. The widths of the rolls are typically chosen to be 9, 10, 12, 15, 19, 25, and 30 mm.

[0146] In a preferred embodiment, at least one, preferably several, free loops are located between the starting loop and the first end of the adhesive tape. These free loops are formed by the at least one knitting thread and / or the at least one sewing thread and do not pass through a connecting loop or any other free loop. As already explained, a tensile stress must be exerted in the longitudinal direction on the area of ​​the adhesive tape where the starting loop, i.e., the first connecting loop that passes through an adjacent connecting loop, is located. Therefore, if this starting loop is located directly at the first end of the adhesive tape, for example, within the first few millimeters, such as the first 5 mm or the first 3 mm, the tensile stress must be applied in this area.However, a tensile stress in the longitudinal direction means that a tensile force is exerted towards the first end and an opposing tensile force towards the second end. These tensile forces must be able to act on the adhesive tape.

[0147] If a tensile stress is to be applied to the area of ​​the initial loop of the adhesive tape, the tensile force must act in the direction of the first end between this area and the first end. Therefore, it is advantageous for this section of the adhesive tape, extending between the area of ​​the initial loop and the first end, to be large enough to allow the tensile force to be applied. The initial loop is therefore preferably arranged at a distance of, for example, at least 5 mm, preferably at least 10 mm, and particularly preferably at least 15 mm from the first end of the adhesive tape. Between the initial loop and the first end, there are then preferably at least one, and preferably several, free loops to ensure the elasticity of the adhesive tape.Furthermore, this ensures that at least one knitting thread and / or at least one sewing thread extends to the first end of the adhesive tape, thus simplifying the manufacturing process.

[0148] In a preferred embodiment, the connecting loops form at least one chain of loops extending along the longitudinal direction of the adhesive tape; particularly preferably, this chain of loops begins at the second end of the adhesive tape.

[0149] Preferably, the adhesive tape is wound such that the adhesive is arranged radially inwards. Alternatively, the adhesive tape is wound such that the adhesive is located radially outwards. Preferably, the adhesive tape is wound onto a backing roll, which is preferably made of plastic or cardboard. Particularly if no such backing roll is available, it is advantageous to unwind the adhesive tape so that the adhesive is located radially outwards.

[0150] With the aid of the accompanying figures, an embodiment of the present invention will be explained in more detail below. They show Fig. 1. A schematic representation of a roll of adhesive tape, Fig. 2, Fig. 3, Fig. 4 to Fig. 5 schematic representations of different states during stretching.

[0151] Fig. Figure 1 shows a roll of adhesive tape 2, which has a first end 4 and a second end 6. The first end 4 is at the front and the second end 6 at the back. In the illustration according to Fig. 1. The first end 4 has already been unwound from the rest of the adhesive tape roll. The adhesive tape has at least one knitted thread that forms a plurality of connecting loops 8. Each of the connecting loops 8, which are in Fig. 1, shown schematically, extends through the connecting loop 8 in the direction of the second end 6 adjacent to the other end.

[0152] The Fig. 2, Fig. 3, Fig. 4 to Fig. The five images show different stages or states during the stretching of the adhesive tape. One can see in Fig. 2, that the adhesive tape 2 has a textile carrier 10. An adhesive compound 12 is arranged on its underside. The at least one knitted thread forms the connecting loops 8, which are shown in the illustration of the Fig. 2 two parallel loop chains are formed. In the two loop chains, each of the connecting loops 8 extends through its adjacent connecting loop 8. The exception is the connecting loop 8 shown at the right edge of the support 10, which has no adjacent connecting loop 8 further to the right. The connecting loop 8 shown at the left edge of the support 10 forms the initial loop 14, which is characterized in that no connecting loop 8 extends through the initial loop 14. In the illustrated embodiment, the first end 4 is located in Fig. 2 left and the second end 6 in Fig. 2 on the right.

[0153] If a tensile stress is now applied in the longitudinal direction, in the Fig. 2, Fig. 3, Fig. 4 to Fig. 5, i.e., when pressure is applied to the adhesive tape on the left side, the initial loops 14 of the loop chains first straighten up. This is in Fig. 3 shown. As soon as the initial loops 14 extend further than in Fig. Once the connecting loops 3 shown have erected, the following connecting loops 8 can also erect and thus detach themselves from the initial loops 14. The initial loop 14 is thereby pulled out of the following connecting loop 8. The situation is schematically represented as follows: Fig.4. The individual loops, now free loops 16, are no longer connected to each other and do not extend through other loops. Each of the free loops 16 shown is formed by a portion of the respective knitting yarn that exits the top surface of the textile carrier 10 at an exit point 18 and re-enters the top surface of the textile carrier 10 at an entry point 20. The length of the knitting yarn between the exit point 18 and the entry point 20 is significantly greater than the distance between the exit point 18 and the entry point 20. This is why the loops 16 are formed.

[0154] If the tensile stress on the adhesive tape is maintained along its longitudinal direction, the tape, and in particular its textile backing 10 and the adhesive compound 12, are stretched. This increases the distance between the exit point 18 and the entry point 20 of each free loop 16. As a result, the length of the adhesive tape increases while its width decreases. The resulting elongation is limited by the length of the knitted yarn between the exit point 18 and the entry point 20, i.e., the length of the free loops 16. Reference symbol list 2 adhesive tapes 4 first end 6 second end 8 connecting loops 10 textile carriers 12 Adhesive compound 14 Starting loop 16 free loop 18 Exit point 20 Entry Point 31 Non-woven sewing fabric 32 Base fleece 33 sewing threads 34 loop chain 35 chain of mesh bridges 36 loops 37 loop opening 38 loop 41 adhesive tape 42 Adhesive layer 44 Intersection point 51, 52 cables QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] EP 0 668 336 A1 [0007, 0038] DE 44 42 092 A1

[0008] EP 3 037 493 A1

[0009] EP 4 092 092 A1

[0009] EP 1 448 744 A1

[0058] EP 1 378 527 B1

[0075] DE 198 07 752 A1

[0084] DE 100 11 788 A1

[0084] DE 43 13 008 C2

[0090] EP 0 578 151 A

[0095] EP 3 540 024 A1

[0099] EP 2 520 627 A1

[0099] EP 2 522 705 A1

[0099] EP 2 520 628 A1

[0099] EP 2 695 926 A1

[0099] EP 2 520 629 A1

[0099] Cited non-patent literature

[0000] Electronic textbook by the company “Double R Controls LTD, England” by author Neal Rothwell entitled “Technical Information on the Principles of Spooling”

[0004] , deposited on the Internet on July 1, 2001 DIN EN 29073-3

[0051] Emulsion Polymerization and Emulsion Polymers” by Peter A. Lovell and Mohamed S. El-Aasser - Wiley-VCH 1997 - ISBN 0-471-96746-7

[0075] DIN EN ISO 1628-1:2012-010

[0087]

Claims

[1] adhesive tape, wherein the adhesive tape a) a front first end, b) a rear second end, c) a longitudinal direction extending from the first end to the second end, d) a textile carrier with a top and a bottom, e) an adhesive compound applied to the underside of the carrier and f) has at least one knitting thread and / or at least one sewing thread arranged in such a manner, g) that it comes into contact with the adhesive on the underside of the carrier and h) forms a plurality of adjacent connecting loops on the upper side, characterized bythat each connecting loop passes through at least one connecting loop adjacent in the direction of the second end and that the connecting loops are arranged such that the loop opening of each individual connecting loop points towards the second end and the actual loop of each individual connecting loop points towards the first end. [2] Adhesive tape according to claim 1, characterized by that the textile carrier is a nonwoven fabric. [3] Adhesive tape according to claim 1 or 2, characterized by that the textile carrier precursor without sewing or knitting thread has a maximum tensile force in the longitudinal direction of less than 2 N / cm or a maximum tensile force in the longitudinal direction of 0.2 to 20 N / cm, preferably 0.5 to 15 N / cm, more preferably 1.0 to 10 N / cm. [4] Adhesive tape according to any one of claims 1 to 3, characterized bythat the textile carrier precursor has an elongation at break of 100% or more, particularly preferably 200% or more, most preferably 300% or more. [5] Adhesive tape according to any of the preceding claims, characterized by that the adhesive tape is wound up in the form of an adhesive tape roll or a spool. [6] Adhesive tape according to any of the preceding claims characterized by that the majority of adjacent connecting loops form at least one longitudinally extending chain of loops. [7] Adhesive tape according to any of the preceding claims, characterized by , that the connecting loop closest to the first end is a starting loop, wherein the starting loop can be removed from the adjacent connecting loop by applying a tensile stress in the longitudinal direction of the tape to the section of tape in which the starting loop is located. [8] Adhesive tape according to any of the preceding claims, characterized by , that a sewing fabric, preferably a non-woven sewing fabric, is used as the textile carrier. [9] Use of an adhesive tape according to at least one of the preceding claims for wrapping elongated goods, wherein the adhesive tape is guided in a helical line around the elongated goods, preferably in an automated winding process. [10] Elongated goods, such as in particular a cable set, sheathed with an adhesive tape according to claim 9. [11] Vehicle containing encased elongated goods according to claim 10.

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