masking tape

Abstract

Masking tape (1) with (a) an adhesive tape (2) having at least one adhesive side for bonding to a work surface and an edge region (7) comprising a carrier layer (3) and an adhesive layer (4), and (b) a cover material (5) laminated in the edge region (7) of the adhesive layer (4), wherein the covering material (5) has a weakening line (6) which runs parallel to the edge region (7), and wherein the masking tape (1) has a protective strip (9) laminated in the same edge region (7) of the adhesive layer (4).

Description

[0001] The invention relates to a masking tape comprising an adhesive tape with at least one adhesive side for adhering to a work surface and an edge region, comprising a carrier layer and an adhesive layer, and a masking material laminated in the edge region of the adhesive layer.

[0002] Cover tapes are known, for example, from the publications EP 3 195 939 A1, US 3 143 208 A, US 2008 / 0 085 366 A1, GB 2 491 618 A and US 2021 / 0 115 307 A1.

[0003] When painting, varnishing, or similar work, large surfaces, as well as more complex and larger geometries such as cabinets, shelves, or desks, are usually covered or masked with so-called Easy Cover products. This applies to professional tradespeople and DIY businesses, as well as to industrial applications, such as automotive painting.

[0004] These Easy Cover products consist of a partially overlapping laminate of adhesive tape strips (also called painter's tape) and a protective mask or covering material, usually made of film or paper. They are usually sold as a tape-like roll of masking material wound on a roll, with the adhesive tape strip applied along one edge. During use, the adhesive tape strip adheres the masking material to the surface to be protected and ensures a precise paint edge when painting over it with paint or varnish, while the masking material or protective mask protects the surface to be protected from paint and varnish splashes, as well as dust and dirt.

[0005] In addition to protective films, which are often made of HDPE, paper masks are also used as such masking materials. Conventional masking tapes are often used as adhesive tapes. However, fabric, film, and other adhesive tapes are also used, especially for outdoor applications. The combination of different masking materials with different adhesive tapes results in products that are specifically suited for a wide variety of applications and substrates.

[0006] Examples of commercially available masking products of this type are the KIP Masker product line (e.g. 232 Fine Crepe Masker, 234 Paper Masker, 233 Fabric Masker, 284 Stucco Masker) from KIP GmbH (Bocholt, Germany), the “tesa Easy Cover ® “ from tesa SE (Norderstedt, Germany) or the product line “klebemeister ® Gold ribbon with foil” from Klebemeister.eu (Reutlingen, Germany).

[0007] Since all of these products are contaminated with paint or varnish after painting or varnishing, disposal is the only option. However, it is desirable that the protective mask be recycled after painting or varnishing (e.g., with the Green Dot recycling system or waste paper), and that the adhesive tape or the area contaminated with paint or varnish be disposed of with the household waste or disposed of properly. This is not possible with the masking products currently available. No recyclable masking products are described in the literature either.

[0008] EP 841 384 A2 relates to a masking tape for painting and varnishing work, which comprises a cover strip applied to the adhesive-free backing of the adhesive tape. The combination of the adhesive tape and cover strip makes it possible to achieve different desired properties regarding the adhesive, the mechanical properties, and the overall thickness of the adhesive tape-cover strip combination.

[0009] EP 999 251 A2, EP 1 149 634 A2, and EP 1 149 883 A2 relate to a masking tape consisting of a temperature-resistant adhesive tape with a paper or flexible film carrier and a self-adhesive composition, and with a laminated release liner (paper, fabric, nonwoven, or adhesive film) and a laminated release liner, the release liner completely covering the side of the release liner paper. The combination of release liner and release liner combines the excellent properties of paper with regard to ink adhesion with the excellent properties of film with regard to resistance to ink penetration.

[0010] WO 2012 / 122623 discloses a masking tape comprising an elongated base substrate with a pressure-sensitive base adhesive layer; and a reinforcing strip adhered to the top surface of the base substrate. The reinforcing strip increases the tear strength of the masking tape, thus preventing the masking tape from tearing when removed from a coated surface.

[0011] DE 10 2014 000 147 A1 discloses a painter's masking film with adhesive tape and protective film, which is characterized in that the adhesive tape and protective film are perforated at regular horizontal intervals so that they can be easily separated with one hand at a suitable point.

[0012] WO 2021 / 191452 discloses a cover film comprising a cover film stack in which the cover film is folded into a double layer along a fold line running along the length, so that the cover film is easy to unfold.

[0013] Since all of these products are contaminated with paint or varnish after painting or varnishing, disposal is only possible with household waste. However, it is desirable that the protective masks be recycled after painting or varnishing (e.g., with the Green Dot recycling system or waste paper), and that the adhesive tape or the area contaminated with paint or varnish be disposed of with household waste or disposed of. This is not possible with the masking products currently available. No recyclable masking products are described in the literature either.

[0014] In practice, after the masking task or after the painting or varnishing work has been completed, the masking or Easy Cover products used are partially contaminated with paint or varnish. Typically, the entire product, consisting of adhesive tape and masking material, is then disposed of. However, this can only be disposed of with household waste and not recycled, as dissimilar raw materials are firmly bonded together and a paint or varnish-contaminated area can be found, particularly near the edge of the adhesive tape. If the user wishes to recycle the masking material, they must laboriously separate it from the contaminated area using cutting tools.An attempt to tear a masking film, for example, regularly results in the tear edge quickly leaving the parallelism of the adhesive tape and thus entering the area contaminated with paint or varnish, or it breaks out into the area of the protective film (see, for example, . Fig. 5). Due to this additional obstacle and the additional labor involved in using a cutting tool, this is often not done and the entire product is disposed of with household waste.

[0015] Therefore, the object of the present invention was to provide a masking tape that mitigates the aforementioned disadvantages. Above all, the object of the present invention was to create the possibility of partially recycling the masking tape or to improve its recyclability.

[0016] This object is achieved by the cover strip according to the invention, as defined in the claims. Preferred embodiments of the cover strip according to the invention are set out in the subclaims and the following explanations.

[0017] The masking tape (1) according to the invention comprises or in particular consists of an adhesive tape (2) with at least one adhesive side for adhering to a work surface and an edge region (7), comprising a carrier layer (3) and an adhesive layer (4), and a masking material (5) laminated in the edge region (7) of the adhesive layer (4), wherein the masking material (5) has a weakening line (6) that runs essentially parallel to the edge region (7). The masking tape has a protective strip laminated in the same edge region of the adhesive layer.

[0018] The weakening line now enables the separation of the pure (uncontaminated) masking material from the adhesive tape / masking material mixing area, which is contaminated with paint or varnish, by simply tearing it off and without the need for additional cutting tools. This makes it quite easy to remove the masking material after painting or varnishing is completed and send it for recycling. The adhesive tape and the adhesive tape / masking material mixing area are removed and disposed of (e.g., with household waste) in a second step, once the paint or varnish on the object or wall is dry enough. The weakening line runs essentially parallel, preferably plane-parallel, to the edge area or adhesive tape and thus in the running direction of the roll (horizontal).

[0019] The weakening line in the masking material can be caused by embrittlement, heat exposure, perforation by slitting, or perforation by piercing. The weakening line can also be formed in a zigzag or wave shape instead of a straight line. In this case, the entire zigzag shape or wave shape runs essentially parallel, preferably plane-parallel, to the edge area or adhesive tape. This means that an imaginary line through the adjacent reversal points of the zigzag shape or through the adjacent wave troughs / peaks runs essentially parallel, preferably plane-parallel, to the edge area or adhesive tape.

[0020] In a preferred embodiment, the weakening line comprises or is a perforation line. The perforation line can be composed of dots or dashes or slits, or a combination of both; in other words, it can be configured as a dot, dash, or dash-dot line (see Fig. 6a to 6k). In general, perforation lines that have slits are preferred. The dots and slits can have different diameters or sizes as well as different spacings. Furthermore, the perforation line can be single, or several parallel perforation lines (of the same or different types), preferably two perforation lines, can form the weakening line. The perforation line or lines can have a straight, wavy, in particular in the form of a sine curve, sawtooth-like, and / or zigzag shape.

[0021] Another possibility for designing the weakening line is to apply a tear aid (see Fig. 6l). This can be implemented, for example, in the form of a thin, yet dimensionally stable PET or MOPP strip. For simplicity, this will also be referred to below as a "weakening line." Such a tear aid is also a preferred form of the weakening line.

[0022] Within the scope of the masking tape according to the invention, the design of the weakened line is advantageous in that at least minimal, but preferably no, penetration of varnish or paint through the weakened line (paint penetration) occurs. Furthermore, the tear propagation force should be within a range such that the weakened line does not break when the film is pulled over the wall or workpiece to be protected by pulling in a direction orthogonal to the weakened line.

[0023] In the masking tape according to the invention, the weakening line (6) is arranged in the masking material at a distance (A) from the masking material edge (8). The distance (A) is advantageously selected so that, under normal circumstances, the masking material is not contaminated with paint or varnish after use of the masking tape below the weakening line. A distance that is too large leads to less masking material being recycled. A distance that is too small, on the other hand, leads to the possibility of masking material being contaminated with paint or varnish that was actually intended for recycling. In addition, a larger distance can minimize the probability of color change, and this factor must also be taken into account when selecting the optimal distance. Of course, the application technique, such asThe application method (brush, roller, or spray) must be taken into account, as these involve varying degrees of contamination by varnish or paint. The distance (A) is typically between 0.5 cm and 30 cm, and preferably between 2 cm and 15 cm.

[0024] As described in claim 1, the masking tape according to the invention has a weakening line. However, embodiments are also conceivable in which the masking tape according to the invention has a plurality of weakening lines, all of which run essentially parallel to the edge region or the other weakening lines. In this case, the masking tape according to the invention has two, three, four or five weakening lines. Two or three weakening lines are preferred in these alternative embodiments. The two or more weakening lines make it easier to ensure during use that only masking material that is not contaminated with varnish or paint is recycled. In this way, parts of the masking material that have large stains of paint or varnish can be separated off at a different weakening line.Furthermore, the masking tape of this embodiment facilitates the provision of the correct size of masking material when masking a surface or objects. The user does not always need to use the entire surface of the masking material and can simply reduce the area of the masking material by cutting it along one of the weakened lines.

[0025] In a preferred embodiment of the masking tape according to the invention, the weakening line is marked visually and / or haptically. This can be done by color marking or by applying contrast-generating stripes. This makes the weakening line easier for the user to see and facilitates its use. Color marking of the weakening line is preferred.

[0026] The masking tape according to the invention comprises an adhesive tape and a cover material. The adhesive tape comprises a carrier layer and an adhesive layer. The carrier layer can be made of common plastics, such as polyethylene (PE), polypropylene (PP), or other plastics.

[0027] Examples of plastics, but not limited to: polyethylene (PE), polypropylene (PP) - in particular oriented polypropylene (OPP) produced by mono- or biaxial stretching, cyclic olefin copolymers (COC), polyvinyl chloride (PVC), polyester - in particular polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polybutylene terephthalate (PBT), ethylene vinyl alcohol (EVOH), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), polycarbonate (PC), polyamide (PA), polyethersulfone (PES), polyimide (PI), ethylene vinyl acetate (EVA) as well as copolymers, blends, multilayer films or composite films made of the above-mentioned polymers, which are, for example, glued, welded or coextruded.

[0028] The carrier layer can also be made of paper or metal foil (e.g., aluminum foil). A paper carrier layer can be coated, creped, printed, or otherwise pretreated and / or modified. The same applies to metal-based carriers. Furthermore, the carriers can be treated, e.g., by impregnation, coating with a primer or varnish, pretreated by corona and / or etching, printed, or otherwise modified.

[0029] In a preferred embodiment, the carrier layer is made of paper or PVC (soft or hard PVC). Furthermore, the carrier layer of the masking tape according to the invention can be creped or stretchable, allowing curved bonding. For example, paper is advantageous as a carrier layer because it is cost-effective and temperature-stable. Soft PVC is often used as a carrier layer when curved bonding is necessary, which also requires a very precise paint edge. Adhesive tapes with hard PVC as the carrier layer are typically used for long, straight lines in a painting process.

[0030] The adhesive layer consists of a pressure-sensitive adhesive that exhibits good bonding properties on a wide variety of substrates, yet can be removed residue-free after bonding, such as acrylics, natural and synthetic rubber compounds, silicones, etc. The adhesive layer is preferably applied over the entire surface of one side of the carrier layer. However, it can also be applied along a strip on the carrier layer next to the release liner.

[0031] The choice of adhesive influences, among other things, the substrate-specific bond strength, temperature resistance, and weathering resistance, i.e., whether the final masking tape is or can be used indoors or outdoors. In a preferred embodiment, the adhesive tape is temperature-resistant, allowing it to be used in paint ovens, such as those used by car painters. In this case, temperature-resistant means that it can withstand oven drying and thus temperatures of up to 130°C (for 1 hour).

[0032] The covering material is preferably, by way of example but not by way of limitation, the following material: Paper, metal (e.g. aluminum), polyethylene (PE), polypropylene (PP) - especially oriented polypropylene (OPP) produced by mono- or biaxial stretching, cyclic olefin copolymers (COC), polyvinyl chloride (PVC), polyester - especially polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polybutylene terephthalate (PBT), ethylene vinyl alcohol (EVOH), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), polycarbonate (PC), polyamide (PA), polyethersulfone (PES), polyimide (PI), ethylene vinyl acetate (EVA) as well as copolymers, blends, multilayer films or composite films made of the above-mentioned polymers, which are, for example, glued, welded or coextruded. The cover material can be treated, e.g. by coating with a primer or varnish, pretreated by corona and / or etching, printed or otherwise modified.Paper can also be impregnated, coated, creped, printed, or otherwise pretreated and / or modified. The same applies to metal-based materials. Another advantageous approach to the task at hand is the structuring of the surface of the covering material (so-called "embossing"), which, according to the state of the art, prevents paint and varnish splashes from running off.

[0033] In a preferred embodiment, the cover material is formed as a PE, PP, PA, PBT, or PET film, but it can also be paper or a metal foil (e.g., aluminum foil). Furthermore, composite films made of the above films or film materials are advantageous, such as a composite film made of PA and PE or PP and PE. More preferred materials are PE, PP, PA, PET, and coated or uncoated paper. It is particularly preferred that the cover material be a PE film or paper, in particular kraft paper.

[0034] The adhesive tape can advantageously be designed as a masking tape. Paper- or PVC-based adhesive tapes are advantageous in this case.

[0035] A tape is generally understood here to be an embodiment with a length (L), a width (B), and a thickness (D), where the length is a multiple of the width and the width is a multiple of the thickness. The masking tape can have a constant width over its entire longitudinal extent and a thickness that varies along the width. However, the thickness can also be constant along the width. The adhesive tape of the masking tape according to the invention preferably has a constant width and thickness over its entire length. The masking material of the masking tape according to the invention likewise preferably has a constant thickness over its length and width.

[0036] The cover material has a width and a length and is preferably also strip-shaped. The cover material comprises a cover material edge that is laminated to an edge region of the adhesive tape. The cover material can be fixed to the side of the adhesive tape facing away from the adhesive side, but it can also be laminated to the adhesive side. Fixing preferably means laminating, but the cover material can also be welded, fixed via a heat-sealing layer, glued, or otherwise attached.

[0037] The covering material usually has a rectangular outer circumference with a length (I) that is many times greater than a width (b), and a width that is many times greater than a thickness (d) of the covering material. The length of the covering material can in principle be infinite, at least several meters, and is usually determined by the outer diameter of the wound covering tape that can be handled by the user. The width of a covering material can be between a few centimeters, decimeters, and even a few meters. Widths of 15 cm to 300 cm are preferred, in particular 18 cm, 30 cm, 55 cm, 110 cm, 140 cm, 180 cm, 260 cm, and 270 cm. The covering tape is often made available for sale and storage with a folded covering material, especially in the case of very wide covering materials. The cover material is folded into a double or multiple layer along a folding line running along the length (I) and forms a stack.When the masking material is folded, the masking tape can be easily rolled up. The stack has a width that is significantly less than the width of the masking material. The stack can be formed by, for example, 2, 5, 7, 9, 12, 16 or even more folds of the masking material. The masking tape, with the possibly folded masking material, is wound into a coil or roll, typically on a cardboard or plastic core. The number of folds and the overlap width of the individual folds define the final height of the roll. Depending on the application, the desired roll height can vary, and thus also the number and overlap width of the folds.

[0038] The masking tape has the protective strip laminated in the same edge region as the adhesive layer. The protective strip can be arranged such that the weakening line is concealed. In a particularly advantageous embodiment, the protective strip is arranged between the adhesive tape and the masking material. The protective strip can be made of the same material as the masking material, but can also be different from it. The material from which the protective strip is made can be selected from the materials for the masking material mentioned above. The protective strip is advantageously made of an absorbent material so that a larger application of paint in the edge region is absorbed, preventing paint or varnish from running or falling onto the masking material and simultaneously preventing paint from bleeding through the masking material. This is particularly the case with paper (e.g. kraft paper).In a particularly preferred embodiment, the protective strip is arranged in such a way that the weakening line is concealed. This prevents ink penetration not only through the cover material, but also through the weakening line.

[0039] The protective strip, like the cover material, has a rectangular outer circumference with a length that is many times greater than its width and a width that is many times greater than the thickness of the protective strip. The length of the protective strip corresponds to the length of the cover material. The width of the protective strip can correspond to the width of the cover material, but is usually less; for example, between 10 cm and 30 cm wide. However, it can also be between a few centimeters, decimetres or even a few meters. The cover tape is often made available for sale and storage with a folded cover material, especially in the case of very wide cover materials. The cover material must be subjected to a fold line running along the length (I).

[0040] The invention is described using an exemplary embodiment in seven figures. These show: Fig.1: Schematic plan view of a cover strip according to the invention Fig. 2: Side view of a cover strip according to the invention Fig. 3: Schematic plan view of a masking tape according to the invention after separation of the recyclable part of the masking material from the contaminated area of the masking tape Fig. 4: Schematic representation of the separation process of the recyclable part of the cover material from the contaminated area of a cover tape according to the invention in plan view Fig. 5: Top view of a conventional prior art masking tape without a weakening line after attempted separation of the masking material Fig. 6a to 6k: exemplary embodiments (AB1 to AB11)) of the weakening line 6 as a perforation line Fig. 6l: exemplary embodiment of the weakening line 6 as a tear aid (AB12) Fig.7: Example of a preferred embodiment of the cover tape according to the invention with protective strip in side view

[0041] Fig. Figure 1 shows a top view of the masking tape 1 according to the invention, comprising an adhesive tape 2 extending in a longitudinal direction and whose length (L) is many times greater than an extension along a width (B). The masking material 5 extends from the longitudinal side of the adhesive tape 2, the edge region 7. The masking material 5 has a rectangular outer periphery with a length (I) that is many times greater than the width (b), and the masking material 5 has a weakening line 6 that runs essentially parallel to the edge region 7.

[0042] Fig.Figure 2 shows a side view of the masking tape 1 according to the invention, comprising an adhesive tape 2 with a carrier layer 3 and an adhesive layer 4. The adhesive tape 2 has a width (B) and a thickness (D). The masking material 5 also has a width (B) and is laminated along its longitudinal direction, and thus along the masking material edge 8, to the edge region 7 of the adhesive tape 2. The masking material 5 has a weakening line 6 at a distance A from the masking material edge 8.

[0043] Fig. 3 shows a schematic plan view of a masking tape 1 according to the invention after separation of the recyclable part of the masking material 5a from the contaminated area 10 of the masking tape (with varnish or paint) along the weakening line 6.

[0044] Fig.4 shows a schematic representation of the advantage of the masking tape 1 according to the invention in separating the recyclable part of the masking material 5a from the contaminated area 10 of the masking tape (with varnish or paint) along the weakening line 6.

[0045] Fig. 5 shows in contrast to Fig. 3 and Fig. 5 a conventional masking tape 1 of the prior art with adhesive tape 2 and masking material 5, but without a weakening line, after attempted separation of the masking material 5. Separating the masking material 5 is difficult without a cutting tool and results in a tear edge that is not parallel to the adhesive tape 2. This would make it difficult to separate the non-contaminated (with varnish or paint) or recyclable part of the masking material from the contaminated area of the masking tape.

[0046] The Fig.6a to 6k show exemplary embodiments or configurations (see also AB1 to AB11 of the comparative tests) of the weakening line 6 as a perforation line.

[0047] Fig. Figure 6a shows an example of the design of the weakening line 6 as a single perforation line configured as dotted lines or composed of dots. This form corresponds to design AB1 in the comparative tests.

[0048] Fig. Figure 6b shows an example of the design of the weakening line 6 using two parallel dotted lines. This shape corresponds to design AB2 in the comparative tests.

[0049] Fig. Figure 6c shows an example of the design of the weakening line 6 as a single perforation line, designed as a dotted line, or composed of dots. This form corresponds to design AB3 in the comparative tests.

[0050] Fig.Figure 6d shows an example of the design of the weakening line 6 as a single perforation line configured as a dashed line or composed of lines / slits. This form corresponds to design AB4 in the comparative tests.

[0051] Fig. Figure 6e shows an example of the design of the weakening line 6 as a single perforation line configured as a dot-dash line or composed of alternating dots and dashes / slits. This form corresponds to design AB5 in the comparative tests.

[0052] Fig. Figure 6f shows an example of the design of the weakening line 6 as a single perforation line in a zigzag shape and as a dotted line or composed of dots. This shape corresponds to design AB6 in the comparative tests.

[0053] Fig.Figure 6g shows an example of the design of the weakening line 6 as a single perforation line configured as dotted lines or composed of dots. This form corresponds to design AB7 in the comparative tests.

[0054] Fig. Figure 6h shows an example of the design of the weakening line 6 as a single perforation line configured as dotted lines or composed of dots. This form corresponds to the AB8 design in the comparative tests.

[0055] Fig. Figure 6i shows an example of the design of the weakening line 6 as a single perforation line configured as a dashed line or composed of lines / slits. This form corresponds to the AB9 design in the comparative tests.

[0056] Fig.Figure 6j shows an exemplary representation of the design of the weakening line 6 using two parallel dashed lines. This shape corresponds to the AB10 design in the comparative tests.

[0057] Fig. Figure 6k shows an example of the design of the weakening line 6 as a single perforation line configured as a dashed line or composed of lines / slits. This form corresponds to the AB11 design in the comparative tests.

[0058] Fig. Figure 6l shows an example of the design of the weakening line 6 as a tear aid (see AB12 of the comparative tests).

[0059] Fig.7 shows a side view of a preferred embodiment of the masking tape 1 according to the invention, comprising an adhesive tape 2 with a carrier layer 3 and an adhesive layer 4. The adhesive tape 2 has a width (B) and a thickness (D). In the edge region 7 of the adhesive tape 2, a protective strip 9 and the masking material 5 are laminated onto the edge region 7 of the adhesive tape 2 at the masking material edge 8, such that the protective strip 9 is arranged between the adhesive tape 2 and the masking material 5. The masking material 5 has a weakening line 6 at a distance (A) from the masking material edge 8, and the protective strip 9 is arranged such that the weakening line 6 is concealed. Comparative tests

[0060] The potential of this invention can be illustrated by comparing a conventional masking tape with an 8 µm thick HDPE film as the covering material / protective mask with several variants of the masking tapes according to the invention. For these comparative tests, the product tesa Easy Cover was used. ®Precision 4365 from tesa SE (abbreviated as GB in the table below) and 12 different variants of an inventive masking tape (AB1 to AB12 in the table below, spacing (A) was approximately 25 mm) were adhered horizontally to a section of wall (wooden panel with a fine filler coating). The wall above the adhesive tape was painted with the emulsion paint "Classic Innenweiss Color Matt" from Herbol (Akzo Nobel Deco GmbH, Germany). After 20 minutes, the masking material below the adhesive tape was removed horizontally, in the case of versions AB1 to AB12, along the weakening line, i.e., in a direction orthogonal to the weakening line. In this case, a) the tear-free pull-out (i.e. the complete unfolding) of the cover film was assessed with yes / no and b) the tearability or separability of the weakening line parallel to the weakening line was assessed with a grade from 1 to 6 (1 = very good and 6 = unsatisfactory).The results of this evaluation are presented in the following table. Execution and drawing of the weakening line Tear-free pull-out capability (Yes / No) Separability (1 - 6) GB1 Yes 6 AB1 (perforation) Yes 5 AB2 (perforation) Yes 5 AB3 (perforation) Yes 5 AB4 (perforation) Yes 1 AB5 (perforation) Yes 1 AB6 (perforation) Yes 4 AB7 (perforation) Yes 3 AB8 (perforation) Yes 3 AB9 (perforation) Yes 1 AB10 (perforation) No 1 AB11 (perforation) Yes 1 AB12 (tear aid) Yes 2

Claims

[1] Masking tape (1) with (a) an adhesive tape (2) having at least one adhesive side for bonding to a work surface and an edge region (7) comprising a carrier layer (3) and an adhesive layer (4), and (b) a cover material (5) laminated in the edge region (7) of the adhesive layer (4), wherein the covering material (5) has a weakening line (6) which runs parallel to the edge region (7), and wherein the masking tape (1) has a protective strip (9) laminated in the same edge region (7) of the adhesive layer (4). [2] Covering tape according to claim 1, characterized by that the adhesive tape (2) is temperature resistant. [3] Covering tape according to claim 1 or 2, characterized by that the carrier of the adhesive tape (2) is made of paper, metal foils or plastics, in particular PVC (soft or hard PVC). [4] Covering tape according to one of claims 1, 2 or 3, characterized bythat the covering material (5) is a PE, PP, PA, PBT or PET film or a composite film made of PA and PE or PP and PE or is made of paper or is an aluminum foil. [5] Covering tape according to claim 4, characterized by that the covering material (5) is a PE film or is made of paper. [6] Covering tape according to one of claims 1 to 5, characterized by that the weakening line (6) is a perforation line. [7] Covering tape according to one of claims 1 to 6, characterized by that the perforation line is made up of dots or slits, in particular slits. [8] Covering tape according to one of claims 1 to 7, characterized by that the perforation line is designed as a single line. [9] Covering tape according to one of claims 1 to 8, characterized by that the weakening line (6) is marked optically and / or haptically. [10] Covering tape according to one of the preceding claims, characterized bythat the protective strip (9) is arranged between the adhesive tape (2) and the covering material (5). [11] Covering tape according to one of the preceding claims, characterized by that the protective strip (9) is arranged so that the weakening line (6) is concealed. [12] Covering tape according to one of the preceding claims, characterized by that the masking tape (1) is wound on a cardboard or plastic core. [13] Covering tape according to one of the preceding claims, characterized by that the covering material (6) is folded into a double or multiple layer along a folding line running along the length (L).

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