EP3338951A1 - Scratch remover for glass - Google Patents

Abstract

The invention relates to a set for polishing and scratch removal from glass surfaces. The kit contains a polishing paste and a spatula-like polishing tool.

Description

Technical area

The present invention relates to a set for removing scratches from glass surfaces and the use of such a set for removing scratches from glass surfaces. Specifically, the invention relates to a set for removing craters from glass surfaces of tempered glass, such as e.g. Car glass, watch glass or display covers of mobile devices (e.g., smartphones and tablets).

Related prior art

Every owner of mobile phones (glass displays), cars (car glass), watches (watch glass), glass furniture, decorative objects, window glass, etc. knows the problem: just about every surface of glass scratch sooner or later. Already so-called micro-scratches, which can not be recognized by the naked eye as scratches, lead e.g. for blindness of the glass so to an apparent clouding. Such micro-scratches can be used even with extremely hard glasses, such as these e.g. used in displays of mobile phones and tablets, caused by the constant stress.

Scratches of every kind not only limit the appearance, but often also the function of the object or device.

The problem is also independent of which glass or which glass quality it is and from which manufacturer the glass comes from. Disturbing scratches in mobile phone displays, for example, limit the view of the display and often make themselves unpleasantly noticeable in touch operation.

As a result, ugly scratches greatly reduce the usability and market value (resale value) of the scratched objects. Repairs or restorations were just barely possible with mobile phones or watches with very hard glass. With replaceable components there was only the possibility, the scratched display (eg with electronic devices such as mobile phones) or the complete glass (eg with cars or watches etc.) of the To have a specialist replaced. However, this is not only very expensive and time-consuming, but also neither environmentally friendly nor sustainable or resource-saving.

Summary of the invention

The aim of the invention is to remove scratches from glass surfaces. In particular, a possibility should be created to remove scratches regardless of the glass quality (or the glass manufacturer). This is intended to preserve the appearance, the function and not least the value of the corresponding objects. In addition, the invention sets the goal of an expensive replacement of components such. To make display glasses or watch glasses superfluous due to scratches, thus opening up considerable savings potential and promoting resource conservation and sustainability.

These objects are achieved by a kit and by a use as defined in the claims.

Detailed description of the invention

Specifically, the kit of the present invention allows an end user to remove scratches from glass surfaces without the aid of other tools.

The present invention relates to a set for removing scratches from a glass surface, comprising a polishing paste containing abrasive bodies, and a spatula-like polishing tool.

The present invention enables scratch removal of known glass grades from all manufacturers. The invention can be offered, for example, both in extremely hard and flexible toughened glasses, such as those under the brands Gorilla glass (CORNING), DRAGONTRAIL (Asahi glass) and XENSATION COVER (Schott), as well as mineral and sapphire crystal (watches) , Autoglas / safety glass (car) as well as normal glass from any manufacturer (windows, furniture, glass objects) application. The Invention is also suitable for glass ceramic, such as ceramic fields as well as for bulletproof glass as it is used for example for shop windows.

For the invention, especially the combination of polishing paste and polishing tool is important. One aspect of the present invention is the manual polishing of glass surfaces, i. polishing only with muscle power without the help of expensive motorized tools. Likewise, in addition to the spatula-like polishing tool, which is optionally partially surrounded by a material and which may optionally be clamped in a holder, no further tools are to be used (which is in contact with the glass surface).

As has been found in experiments, the polishing effect of the polishing paste is significantly lower when only a cloth or a cloth is used as a polishing aid. This is all the more true, the harder the surface to be polished is. Although the invention is not to be limited to the following theory, it is believed that wipes (e.g., a microfiber cloth) can not apply sufficient pressure to the abrasive bodies. Specifically, especially small abrasive bodies are pressed into the fabric and thus can not sufficiently exert their polishing effect. The use of the significantly harder, spatula-like polishing tool now leads to the fact that the abrasive body at most partially penetrate into the polishing tool and there possibly form a grinding or polishing surface during enrichment. Anyway, when using the polishing tool of the invention, the polishing effect of the abrasive bodies in the polishing paste is maintained. Thus, even fine scratches can be removed from extremely hard glass.

The spatula-like polishing tool (also polishing aid), which can also be referred to as a polishing rod, is not particularly limited, as long as the polishing paste are thus distributed on the glass surface. The shape of a spatula (a flattened cuboid) is ideally suited at least on the polishing side of the tool. The simplest form of such a polishing rod is a cuboid as in Fig. 1 shown, wherein the edges may also be rounded or bevelled.

As an ergonomic advantageous to the longitudinal direction of the polishing tool at an angle (β) of about 45 ° (eg in a range of 20 ° to 70 °, preferably 30 ° to 60 °, or 40 ° to 50 °) beveled polishing surface proven (see. Fig. 2A , in perspective, and Fig. 2B Top view from the front of Fig. 2A ). As a result, both the normal force for the required polishing pressure and the lateral force for the polishing movement are optimally combined and "chatter marks" are avoided. The chamfer may also be present at both ends of the polishing tool for use with two polishing pastes of different grain sizes.

The polishing tool preferably has dimensions that allow the tool to be operated with one hand and to apply sufficient pressure during polishing.

Thus, in the case of a cuboid (or approximately cuboid) polishing tool, its length (L) is preferably 2 to 35 cm. For ease of handling, the length should preferably be at least 3 cm, at least 4 cm, at least 5 cm, at least 6 cm, at least 7 cm, at least 9 cm, at least 10 cm, or at least 11 cm. Likewise, the length should preferably be at most 30 cm, at most 28 cm, at most 26 cm, at most 25 cm, at most 24 cm, at most 23 cm, at most 22 cm or at most 21 cm. More preferably, the length is in a range of 11 to 22 cm, more preferably in a range of 13 to 17 cm.

The width (B) should not exceed 2.5 cm, not more than 2.0 cm, not more than 1.5 cm, or not more than 1.0 cm. Likewise, the width should preferably be at least 0.3 cm, at least 0.4 cm, at least 0.5 cm, at least 0.6 cm or at least 0.7 cm. Particularly preferably, the width is in a range of 0.5 to 1.5 cm.

The depth (T) or thickness (the shortest side) should preferably be at most 1.50 cm, at most 1.30 cm, at most 1.20 cm, at most 1.10 cm, at most 1.00 cm, or at most 0.90 cm. Likewise, the thickness should preferably be at least 0.10 cm, at least 0.15 cm, at least 0.20 cm, at least 0.30 cm, at least 0.40 cm or at least 0.45 cm. More preferably, the thickness is in a range of 0.20 to 1.00 cm.

The polishing tool preferably has an aspect ratio (L / T) of length (L) to thickness (T) of at least 6, preferably at least 8, at least 10, at least 15, at least 20 or at least 25. This aspect ratio (L / T) is preferred 100 or less, 90 or less, 80 or less, or 70 or less.

The aspect ratio (B / T) of the width (B) to the thickness (T) is preferably 1.3 or more, 1.5 or more, 1.7 or more, 1.9 or more, 2.0 or more, 2 , 1 or more, or 2.2 or more. This aspect ratio (B / T) is preferably 5.0 or less, 4.0 or less, 3.5 or less, 3.2 or less, or 3.0 or less.

For non-cuboid (or nearly parallelepiped) polishing tools, these dimensions are also preferred, with the length referring to the longest dimension of the tool, the thickness being related to the material thickness of the tool in the vicinity (at 0.3 cm distance) of the tool for polishing and the width refers to the dimension (at the end used for polishing) in the direction perpendicular to (perpendicular to) both the direction of the length and the direction of the thickness.

The abrasive bodies are preferably made of a material having a Mohs hardness of 5.5 or more, 7.0 or more, 8.0 or more, 9.0 or more, more preferably 9.2 or more, 9.5 or more, 9.8 or more, 9.9 or more or more than 9.9. In particular, for polishing tempered glasses, the Mohs hardness is preferably 9.5 or more, 9.8 or more, particularly preferably 10.0. The Mohs hardness is more preferably in the range of 9.0 to 10.0.

The abrasive bodies are preferably made of a material selected from the group consisting of diamond, alumina (Al 2 O 3), boron carbide, silicon carbide, cerium oxide and boron nitride. Although the hardness and thus the material may be appropriately selected according to the application of the invention, it is preferred to use diamond as the material of the abrasive bodies to ensure a wide range of application even in ignorance of the material to be polished.

• Monokristalliner Industriediamant, der relativ kostengünstig und in großen Mengen herstellbar ist, weist eine monokristalline Gitterstruktur auf. Die Gleitebenen sind parallel zueinander. Bei Belastung (z.B. beim Polieren) bricht das monokristalline Diamantkorn entlang der parallelen Spaltebenen. Hierdurch entstehen Körner in blockiger Form mit scharfen Schneidkanten. Allerdings kann sich somit bereits durch lediglich einen Bruch die Korngröße halbieren.

The diamond is preferably synthetic diamond. In addition, the diamond may be monocrystalline diamond or polycrystalline diamond, preferably polycrystalline diamond. Polycrystalline diamond shows better polishing results in the present invention. The reason given is the following:

• Monocrystalline industrial diamond, which is relatively inexpensive and can be produced in large quantities, has a monocrystalline lattice structure. The glide planes are parallel to each other. Under load (eg during polishing), the monocrystalline diamond grain breaks along the parallel cleavage planes. This results in grains in block form with sharp cutting edges. However, even just a fraction can halve the grain size.

In contrast, a polycrystalline industrial diamond (PCD) is composed of a multitude of tiny diamond grains (usually of the order of nm). When loaded, small corners and edges break out of the diamond grain, creating new, sharp cutting edges (self-sharpening effect). Thanks to this unique characteristic, high removal rates (polishing rates) are possible over a longer period of time. PCD is therefore ideally suited for polishing extremely hard materials such as sapphire glass, ceramics, but also for GORILLA GLAS (brand).

The polishing tool is preferably made of wood or plastic. Both woods and plastics are available in different degrees of hardness. Due to the hardness of the polishing tool, the polishing effect can be fine tuned.

Depending on the degree of hardness of the contact surface of the polishing tool, the polishing effect of the combination polishing rod and polishing paste can be adjusted. Again, the assumption suggests that the polishing effect of the abrasive body in the soft material is more buffered (as they penetrate deeper into the material) and correspondingly less in hard wood. In addition, the rolling motion of the abrasive body (or polishing body), which is actually typical of the lapping process, is presumably reduced by softer polishing tools, so that a typical lapping process rather than a typical polishing process takes place. Here are the following Polishing gradation shown Soft / mild: soft polishing rod - monocrystalline diamond. Hard / sharp: hard polishing rod - polycrystalline diamond.

In the case of woods, soft woods are usually distinguished (usually with a Brinell hardness (transverse to the fiber; 12% moisture) of at most 20, eg linden (16), spruce (12), fir (16), Douglas fir, pine (19 ), Larch (19), balsa (2), alder (12), linden (16), poplar (10), wherein in the invention the hardness should be at least 10), hard or medium-hard woods (usually with a Brinell) Hardness between 20 and 30 eg birch (22 to 30, depending on the species), elm or frame (30)) and hardwoods or very hard woods (usually with a Brinell hardness of at least 30 eg yew (30), Bankirai ( 63), Ash (38), Cherry (31), Robinia (46), Teak (≥30), Bamboo (40), Olive (51), Wenge (44), Azobe (78), Beech (34), Ebony (84), oak (34), hornbeam (34)).

For the polishing tool of the present invention, hard (medium-hard) woods and hard woods (very hard woods) are preferably used, preferably birch or beech, preferably birch. For a fine polish (to remove the last scratch), a soft wood, preferably spruce, pine or linden, preferably linden, may be used, in particular in a multistage polishing process, preferably in the last step. When plastics are used, they can be categorized according to their hardness according to the different types of wood and used accordingly.

The abrasive bodies preferably have an average particle size D50 (by volume) in a range of 0.05 to 25.0 μm. The range is particularly preferably 0.10 to 15.0 μm, 0.10 to 12.0 μm, 0.10 to 10.0 μm, 0.10 to 8.0 μm, 0.10 to 6.0 μm, or 0.10 to 4.0 μm. The average particle size is preferably at least 0.2 .mu.m, at least 0.3 .mu.m, at least 0.4 .mu.m or at least 0.5 .mu.m in order to ensure a good polishing effect (within a reasonable time).

Of course, the particle size (average particle size D50) of the abrasive has a significant share of the polishing effect. For example, diamond powders with a grain size (mean particle size) of> 6 μm lead into gorilla Glass itself to micro scratches and make the surface go blind. Even coarse diamond powder> 25 μm can cause visible scratches even in gorilla glass.

Therefore, a grain size of well below 6 microns is preferably used for scratch removal at least in the last step. Better and, above all, faster results are obtained, however, if the polishing is carried out in several stages (at least two stages). In this case, the grain size may be gradual from coarse (eg 6.0-25.0 μm, preferably 6.0-10.0 μm) over average grain size (s) (eg 1.0-6.0 μm; 1.0 - 3.0 microns, 1.5 - 2.5 microns) to fine grained (eg 0.2 - 1.0 microns) are graded, the coarse grain size and / or one or more of the average grain sizes can also be omitted. Particularly preferably, the polishing is carried out in several stages (eg two-stage), wherein at least one polishing process with average particle size of the polishing body (eg D50 in the range 1.0-6.0 .mu.m, 1.0-3.0 .mu.m, or 1.5-2 , 5 microns) and at least one polishing process with fine particle size (eg D50 in the range of 0.2 to 1.0 microns, 0.4 to 1.0 microns, 0.5 to 1.0 microns, or 0.6-0 , 9 microns) is performed.

The particle size distribution of the polishing particles is preferably narrow. Specifically, the amount of particles having particularly large particle sizes should be small. The D99 value is therefore preferably at most 2.5 times the D50 value, more preferably at most 2.3 times, 2.2 times, or 2.1 times.

Thus, preferably, in addition to the polishing paste (hereinafter referred to as first polishing paste), the kit preferably comprises a second polishing paste containing second abrasive bodies, the second abrasive bodies having a smaller average particle size (D50) than the abrasive bodies of the first polishing paste (then referred to as first abrasive bodies ) exhibit.

Preferably, the second abrasive bodies have an average particle size of at most 70%, preferably at most 50%, at most 45%, or at most 40% of the average particle size of the first abrasive body. It is preferably 20% or more, also preferably 25% or more. Appropriate grading helps to avoid unnecessary work steps.

Specifically, in a polishing process having exactly two pastes, the average particle size of the first abrasive body is preferably in a range of 1.0 to 6.0 μm, more preferably 1.3 to 3.0 μm, and the average particle size of the second abrasive body is preferably one Range of 0.1 to 1.5 microns, more preferably 0.5 to 1.2 microns. Thus, with only two polishing pastes, a removal of visible scratches can be effectively done together with a fine polish to remove micro-scratches. In this case, it is preferable to use in an additional work step (preferably the last polishing step) an additional polishing tool which has a lower hardness than the first polishing tool. So a finely polished surface can be created.

Further, in addition to the polishing tool (referred to as a first polishing tool), the set preferably includes a second spatula-like polishing tool, wherein the second polishing tool has a lower hardness (eg, made of a soft material such as linden wood) than the first polishing tool (eg a hard or medium-hard material or wood, such as birch wood) may have. The preferred shapes and dimensions of the second polishing tool are preferably in accordance with the preferred shapes and dimensions of the first polishing tool described above.

Alternatively, the first (or only) polishing tool may be used in a two or more stage polishing process such that the previously unused side is used at least for the final polishing step and / or the polishing tool is ground prior to at least the last polishing step. For this purpose, a grinding tool (eg sandpaper) can be included in the set. Thus, the "carry-over" of coarse abrasive bodies in a polishing step with fine abrasive bodies can be prevented.

Preferably, the set further comprises a piece of fabric, preferably a fabric with very fine fibers (microfiber cloth). The cloth may be attached to the end of the polishing tool which is in contact with the glass surface during polishing. The fabric may be, for example, a woven fabric or a nonwoven fabric. It has been shown that the polishing effect by a suitable substance is not affected. Much more can be largely prevented by the piece of fabric a "push away" the polishing paste. So the piece of fabric with the polishing paste absorbs virtually full and supplies the end of the polishing tool steadily with polishing paste. This not only saves time (because the paste does not have to be pushed back into the work area), but it can also be a more uniform polishing. The polishing cloth should be as thin as possible (eg 0.1 - 1.0 mm, preferably 0.3 - 0.5 mm) and have the lowest possible spring action, so that an optimal transfer of force to the surface takes place. Furthermore, the polishing with the piece of fabric can be carried out with significantly less polishing paste and is thus much more economical. Furthermore, it has been found that when using such a polishing cloth, the hardness of the polishing tool and its material (wood or plastic) only plays a minor role. Thus, using a polishing cloth, multiple (even all) polishing operations may be performed using only one polishing aid (or multiple polishing aids of the same material) without compromising the result. By using a polishing cloth for each of the pastes also a contamination of the finer pastes with the larger abrasive bodies of coarser pastes and thus new scratches during fine polishing can be avoided.

When using a polishing cloth in a multi-stage polishing process, the cloth should be changed after each polishing step, or at least before the last polishing step (or when replacing an elongated cloth, the polishing pad should be changed). In this case, also can be dispensed with a grinding of the polishing tool (or on an exchange or a change of the polishing side), since the coarse abrasive grains from previous polishing steps through the cloth do not adversely affect.

For quick and easy changing (or moving) of the polishing cloth this is preferably temporarily attached to the polishing tool. For example, the cloth is placed over the polishing tip (or polishing end) of the tool so that preferably the entire polishing surface is covered with the cloth. Then, the cloth is preferably attached to a more rearward (or central) part of the polishing tool. This can be done, for example, with a simple clip (eg made of metal or plastic, for example a paper clip or a clip) or preferably with a rubber (rubber ring) happen. The kit therefore preferably includes a clip or rubber ring for attaching the blanket to the polishing tool.

If there are multiple wipes in the set, they are preferably marked (e.g., colored) to prevent mix-up even if polishing is interrupted or multi-levelly polished several times.

The composition of the abrasive pastes (or polishing pastes) is not particularly limited. Preferred particle sizes of the abrasive bodies (or polishing bodies) have already been discussed above. The pastes preferably have a proportion of abrasive bodies in a range of 5 to 50 wt .-%, preferably at least 10 wt .-%, at least 15 wt .-%, at least 20 wt .-%, or at least 25 wt .-%, also preferably at most 45% by weight or at most 40% by weight.

The pastes preferably have a composition (especially viscosity) which prevents rapid settling of the abrasive article. This can be achieved in several ways. So could e.g. Oil or wax based compositions containing, in addition to the abrasive articles, oil (e.g., mineral oil), optionally wax (e.g., paraffin wax) and optionally stabilizers (e.g., amorphous fumed silica) may be used. Likewise, emulsions are usable, e.g. Oil-in-water (O / W) emulsions (eg with mineral oil and / or vegetable oil, such as olive oil, and emulsifiers, and optionally stabilizers, wax and other auxiliaries), or water-in-oil (W / O) emulsions (eg with silicone oil and emulsifiers, stabilizers, preservatives and other auxiliaries if necessary).

Also presented herein are pastes containing an abrasive (preferably as specified above and preferably in the above amounts) and based primarily on PEG (polyethylene glycol). The properties of the pastes are adjusted by mixing different PEGs (polyethylene glycols), especially PEGs of different (average) molecular weights are mixed. A mixture may, for example, 10-50 wt .-% PEG-100, 5-30 wt .-% (PEG-400) and 1-20 wt .-% PEG-6000 (balance Abrasives). Another example contains PEG-200 (eg 50-80 wt%) and PEG-6000 (eg 5-20 wt%) (remainder abrasive). Generally, a PEG-based paste preferably contains the abrasive (preferably as specified above and preferably in the above amounts), 30-80 wt% (preferably 40-70 wt%) PEG <1000, 1-20 wt% (preferably 5-15% by weight) PEG ≥ 1000 (preferably PEG ≥ 2000, PEG ≥ 3000 or PEG ≥ 4000) and 0-5% by weight (preferably ≦ 3% by weight) other substances (such as stabilizers, Emulsifiers, preservatives, adjuvants).

The invention further relates to the use of a set as described above for polishing a glass surface, especially for removing scratches from a glass surface. The use is preferably carried out as outlined above, particularly preferably multi-stage (for example two-stage), e.g. using two polishing pastes and two different polishing tools.

The use therefore preferably comprises applying the polishing paste to the glass surface, followed by polishing the glass surface by means of the polishing tool to which optionally a piece of fabric, preferably a microfiber cloth, is attached.

In particular, it is preferable to remove existing (deep) scratches in the first step with the polishing paste. Afterwards, only micro-scratches on the surface can be recognized. In a second step, these micro-scratches are then removed with a fine paste, thus polishing the glass surface to a high gloss. As a polishing aid, the polishing rod and optionally a piece of fabric (preferably a microfiber cloth) which is attached to the tip of the polishing rod is used. The microfibre cloth sucks very well with the paste, which greatly facilitates the polishing process and makes it more effective.

Examples

The invention will be clarified by way of examples. However, the invention is not limited to the disclosed examples.

Example 1:

A polycrystalline diamond powder paste (D50 = 1.4 μm, D99 <2.9 μm) was used to polish tempered glass (smart phone display) to remove a single visible scratch. As a polishing aid, a birch wood spatula was used (cuboid wooden plate L: 15.0 cm, W: 1.0 cm, D: 0.50 cm, flattened at one side with β = 45 °), which was covered with a microfiber cloth (a single Layer of cloth was placed around the top and fixed with a rubber ring about 2 cm from the top).

As a result, the scratch could be removed without producing any visible new (micro) scratches.

Example 2:

The procedure of Example 1 was repeated with a paste in which the grain size was D50 = 2.0 μm (D99 <3.7). It was then polished in a second step with a paste having a grain size of D50 = 0.7 μm (D99 <1.6). As a polishing aid, the same birch wood spatula was used, around whose end used for the first polishing a new piece of microfiber cloth was wound.

Scratch removal was faster, despite the two-step process. In addition, one could observe on closer inspection a better quality (smoothness) of the glass surface.

Comparative Example 1

Example 1 was repeated except that the polishing aid was changed. As a polishing aid, the same type of microfiber cloth was used as in Example 1 without further polishing aid. The microfiber cloth was thus passed over the glass surface with a finger.

Although the amount of polishing paste tripled, the scratch could not be completely removed.

Comparative Example 2 and 3:

Instead of the microfiber cloth of Comparative Example 1, a cotton fabric (Comparative Example 2) or a leather polishing cloth (Comparative Example 3) was used and otherwise the procedure of Comparative Example 1 is repeated. The result was unsatisfactory as in Comparative Example 1.

Comparative Example 4

The procedure of Comparative Example 1 was repeated, using as the surface to be polished the same glass as in Example 1, which, however, had only micro scratches.

Even the micro scratches could not be removed with the microfibre cloth as the only polishing aid. It remained cloudy or blind spots in the glass.

Claims (17)

A set for polishing a glass surface comprising: a polishing paste containing abrasive bodies, and a spatula-like polishing tool. Set according to claim 1, wherein the abrasive bodies are made of a material having a Mohs hardness of 5.5 or more, preferably 7.0 or more, 8.0 or more, 9.0 or more, particularly preferably 9.2 or more. The kit of claim 1 or 2, wherein the abrasive bodies are made of a material selected from the group consisting of diamond (monocrystalline or preferably polycrystalline diamond), alumina (Al 2 O 3), boron carbide, silicon carbide, ceria and boron nitride. Set according to one of claims 1 to 3, wherein the polishing tool is made of wood or plastic. Set according to one of claims 1 to 4, wherein the polishing tool has a length of at least 2 cm, preferably at least 3 cm, at least 4 cm, at least 5 cm, at least 6 cm, at least 7 cm, at least 9 cm, at least 10 cm, or at least 11 cm; and or
a length of at most 35 cm, preferably not more than 30 cm, not more than 28 cm, not more than 26 cm, not more than 25 cm, not more than 24 cm, not more than 23 cm, not more than 22 cm or not more than 21 cm, more preferably a length in the range of from 13 to 17 cm. Set according to one of claims 1 to 5, wherein the polishing tool has a width of at most 2.5 cm, preferably at most 2.0 cm, at most 1.5 cm, or at most 1.0 cm; and or
a width of at least 0.3 cm, at least 0.4 cm, at least 0.5 cm, at least 0.6 cm or at least 0.7 cm, more preferably has a width in a range of 0.5 to 1.5 cm , Set according to one of claims 1 to 6, wherein the polishing tool has a thickness of at most 1.50 cm, preferably at most 1.30 cm, at most 1.20 cm, at most 1.10 cm, at most 1.00 cm, or at most 0, 90 cm; and or
a thickness of at least 0.05 cm, preferably at least 0.10 cm, at least 0.15 cm, at least 0.20 cm, at least 0.30 cm, at least 0.40 cm or at least 0.45 cm, more preferably a thickness in a range of 0.20 to 1.00 cm. Set according to one of claims 1 to 7, wherein the polishing tool has an aspect ratio (L / T) of the length (L) to the thickness (T) of at least 6, preferably at least 8, at least 10, at least 15, at least 20 or at least 25; and or
an aspect ratio (L / T) of 100 or less, preferably 90 or less, 80 or less, or 70 or less; and or
an aspect ratio (B / T) of the width (B) to the thickness (T) is 1.3 or more, preferably 1.5 or more, 1.7 or more, 1.9 or more, 2.0 or more, 2, Has 1 or more or 2.2 or more; and or
has an aspect ratio (B / T) of 5.0 or less, preferably 4.0 or less, 3.5 or less, 3.2 or less, or 3.0 or less. Set according to one of claims 1 to 8, wherein the abrasive body has an average particle size in a range of 0.05 to 25.0 microns, preferably 0.10 to 15.0 microns, 0.10 to 12.0 microns, 0, 10 to 10.0 μm, 0.10 to 8.0 μm, 0.10 to 6.0 μm, or 0.10 to 4.0 μm. The kit according to any one of claims 1 to 9, comprising, in addition to the polishing paste (first polishing paste), a second polishing paste containing second abrasive bodies, the second abrasive bodies having a smaller average particle size than the abrasive bodies of the first polishing paste (first abrasive bodies). Set according to claim 10, wherein the second abrasive bodies have an average particle size of at most 70%, preferably at most 50%, at most 45%, At most 40% of the average particle size of the first abrasive body. A set according to claim 10 or 11, wherein the average particle size of the first abrasive bodies is in a range of 1.0 to 6.0 μm, preferably 1.0 to 4.0 μm, and the average particle size of the second abrasive bodies is in a range of 0, 1 to 1.5 microns, preferably 0.4 to 1.3 microns. Set according to one of claims 1 to 12, which in addition to the polishing tool (first polishing tool) comprises a second spatula-like polishing tool, wherein the second polishing tool has a lower hardness than the first polishing tool. Set according to one of claims 1 to 13, further comprising a piece of fabric, preferably a thin microfiber cloth for covering the polishing side of the spatula-like polishing tool, wherein
the kit further preferably includes a fastening material, such as a clip or rubber ring, for reversibly securing the fabric to the polishing tool. Use of a kit according to any one of claims 1 to 14 for polishing a glass surface. Use according to claim 15 for removing scratches from a glass surface. Use according to claim 15 or 16, comprising applying the polishing paste to the glass surface, followed by polishing the glass surface by means of the polishing tool to which optionally a piece of fabric, preferably a microfibre cloth, is attached.

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