• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a technical adhesive tape (1) for wrapping rollers or rollers or for covering handle or standing surfaces, with a band-shaped textile consisting of a fabric carrier (2) on one side with a pressure-sensitive adhesive coating and on the other side is provided with at least one full-surface or at least one texture-forming coating, which is at least only partially wetted by water and increases the grip of the surface relative to the textile support surface. In order to provide such an adhesive tape (1) which can be wound on itself with high functionality without an interliner, it is proposed that the pressure-sensitive adhesive coating consist of a UV-crosslinked acrylate adhesive and the coating of a thermally or radiation-crosslinked liquid silicone rubber (LSR) ,
    公开号:CH707204B1
    申请号:CH01871/13
    申请日:2013-11-07
    公开日:2017-09-15
    发明作者:Rönisch Ralf
    申请人:Coroplast Fritz Müller Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Description: The present invention relates to a technical adhesive tape for wrapping rollers or rollers or for covering handle or standing surfaces, comprising a band-shaped textile carrier consisting of a fabric, which is provided on one side with a pressure-sensitive adhesive coating and on the other side is provided with at least one full-surface or at least one texture-forming coating, which is only partially wetted by water and increases the grip of the surface relative to the textile support surface.
    Such bands are known to be used as grip bands for sports equipment or as Walzenabdeckbänder. In the latter case, the adhesive tape is used for masking rolls which are used in a coating process for transporting the material to be coated or layered and make possible a direct and damage-free contact of the rolls with sensitive substrates such as adhesives, paints, varnishes or scratch-sensitive surfaces. In addition, such adhesive tapes can impart anti-slip properties.
    From the document EP 1 857 152 A1, a grip tape for wrapping the handle of equipment, such as sports equipment, known, which can be applied in particular on rackets for ball games. The known tape has an at least three-layered layer structure and consists of a wound directly on the handle damping layer of a vibration-damping material, wound on the damping layer intermediate layer of a moisture absorbing and absorbing material and an outer, wound on the intermediate layer cover layer made of a material with a rough surface finish. An adhesive coating is not described in the document.
    A similar band is also known from US 2004/109 980 A1. This describes a grip tape for wrapping a handle in which, to improve the grip, a perforated cushioning layer is covered with a liquid, solution or emulsion applied and polymerized elastomeric coating, preferably of silicone rubber or polyurethane. During production, the elastomer-forming mixture fills the interspaces in the perforated layer, with a texture formed of alternating recesses and elevations forming on the gripping surface due to the locally different surface tensions on the surface. Also in this document no adhesive coating is described.
    A commercial adhesive tape of the type mentioned is known under the name "tesa Printer's Friend® 4863" and consists of a specially treated cellulosic tissue as a carrier, which is provided on the back with a coined by means of gravure rolls, produced by condensation crosslinking silicone rubber coating. The surface, which has punctiform elevations, acts z. B. on the cylindrical component surfaces of rollers or pulleys against deposition of particular sticky coating materials, which come into contact with the surface. As a result, removal of the rolls during a coating change is sometimes superfluous. The known adhesive tape can also be used as a non-slip pad for masking surfaces. It has an adhesion to steel of 3.5 N / cm, wherein the adhesive of the adhesive coating is formed from natural rubber.
    In order for the known adhesive tape to be able to be wound on itself, an interliner is necessary which consists of a polypropylene film. This requirement is a factor from the viewpoint of material economy in manufacturing and from the viewpoint of assembling time in processing, disadvantageously making the respective expense unfavorably high. In addition, the known tape is difficult hand tear.
    The invention has for its object to provide an adhesive tape of the type mentioned, which overcomes these disadvantages with high functionality and thus manufacturable and processable in a technologically less complex manner.
    This is achieved according to the invention in that the pressure-sensitive adhesive coating consists of a UV-crosslinked acrylate adhesive and the coating consists of a thermally or radically crosslinked liquid silicone rubber (LSR).
    Surprisingly, it is possible with this combination of carrier, adhesive and coating material, according to the invention to provide an adhesive tape which can be wound on itself while maintaining excellent application-relevant performance properties without interliner, so that the inventive adhesive tape in comparison can be produced and processed with the known bands with much less effort.
    In the technology for the production of products made of liquid silicone rubber (LSR: English Liquid Silicone Rubber) is a developed since the 80s of the last century, technologically well-established special procedure that differs from the condensation crosslinking, which in the Production of the silicone coating for the aforementioned, known adhesive tape is used, significantly different. For example, LSR products are used in spark plugs, switch covers, headlamp seals, and the like in the automotive industry. a., Also used in electrical engineering and in dental and medical technology, and also in household and sanitary engineering, there for example as sealing rings or jet inserts for shower fittings. These products are produced in the majority as injection molded parts, wherein the typical constituents of an LSR silicone rubber are siloxanes, in particular linear siloxanes, preferably polydimethylsiloxanes, which are present at about 60 to 80 percent by mass, also fillers - about 20 to 40 percent by mass - and Additives - about one percent by mass. The crosslinking mechanism of LSR is based on a mostly by noble metal complexes catalyzed addition of Si-H groups to silicon-bonded vinyl groups, both of which are incorporated into the polymer chains or at the end. Instead, in the case of the condensation crosslinking known for the silicone rubber layer, crosslinking takes place by condensation of SiOH groups to form Si-O bonds, which takes a relatively longer time.
    The use of LSR in the silicone coating of the inventive adhesive tape also makes it possible in a technologically advantageous manner, instead of an embossing roll to use a screen-printing process for producing the texture, wherein optionally in the coating a combination of a flat applied lower, directly on the Carrier applied sub-layer and an upper textured sub-layer is possible. By a, in particular knobs forming dot raster in the upper layer, which may have a comparatively greater height than the known textures, it is possible to keep the contact surface in use with coming into contact materials small and a release (release) facilitate. This also relates to the detachment from the tape back, wherein additionally can be adjusted by a deliberately set degree of crosslinking in the UV-crosslinkable Acrylatklebebeschichtung advantageously a desired adhesive interaction between the tape back and adhesive layer.
    The dots applied by the screen printing method can advantageously be present with variable point density, for example, preferably with a point density in the range from 30 to 100 dots per cm 2. The dot geometries are also advantageously - also within a certain print image - also variable in terms of their shape, their diameter and height. They can be applied in particular in rotary screen printing.
    The prevention of deposits takes place in a conventional manner in that the tape surface is at least only partially wetted by water and other liquids due to the silicone rubber coating. This means that the respective liquid forms a round hood on the surface, wherein the contact angle is smaller than 90 °. When the surface is tilted, the liquid slides down from the surface like a club. Thereafter, no or only a few liquid residues are observed on the surface. In the case of a disadvantageously complete wettability, a liquid instead spreads on the surface in the form of a flat disk, wherein a macroscopic contact angle is absent. Only when the surface is more inclined does the liquid trickle down. In this case, the liquid disc extends in length and forms a strip in the direction of inclination. Residual fluid sticks to the surface, even in the strongest inclination. In the best case, it is a monomolecular film and a contact angle of zero. The ideal case of forming the belt surface is one which is not wettable by water or other liquids contained in coating compositions, such as organic solvents. The liquid then contracts on the surface to an almost spherical drop, forming a contact angle greater than 90 °. With slight inclination of the surface, the drop slides down without any liquid residue, d. H. the liquid bubbles off. Such an effect can be achieved, for example, by the use of fluorinated LSR in the textured layer.
    In addition to the possibility of linerless presentation of the inventive adhesive tape has this as further advantages over the prior art, that thus a Handeinreissbarkeit can be achieved that the carrier is rot proof that the inventive adhesive tape is pliant and flexible and no flagging shows, so that it can be used with advantage without problems for wrapping rolls with very small diameters. A small possible total thickness improves processability and flexibility. It has a relatively high bond strength comparatively long service life and a high separation force against z. As adhesives, wherein no interaction with the silicone coating occurs. In addition, the advantages are its residue-free removability after use, its anti-slip properties on driven rollers, the reduction of noise in roller contact with adhesive surfaces to emphasize - and that in a helical use, the wound roller can reduce wrinkles in the substrate and that no adhesive build-up or adhesive transfer on Guide rolls done.
    Further advantageous embodiments of the invention are contained in the dependent claims and the following specific description. On the basis of several embodiments, the invention will be explained in more detail.
    Reference to the drawing, the invention will be explained in more detail by way of example. Showing:
    1 shows a schematic cross section through a first embodiment of an inventive adhesive tape,
    2 shows a schematic cross section through a second embodiment of an inventive adhesive tape,
    3 shows a schematic cross-section to illustrate a preferred method of producing the carrier for an adhesive tape according to the invention,
    4 is a tabular overview (Table 1) of the characteristics of a carrier of an inventive adhesive tape in two different fabric constructions,
    5 is a tabular overview (Table 2) to the characteristics of inventive adhesive tapes in three different versions,
    Fig. 6 is a tabular overview (Table 3) to tribological characteristics of inventive adhesive tapes in the three different versions in comparison to two comparative adhesive tapes.
    In the figures of the drawing, the same parts are always provided with the same reference numerals, so that they are usually described only once in each case.
    Fig. 1 shows a first without interliner wound on itself, preferably in the transverse direction by hand tearing, textile technical adhesive tape 1, which has a thickness D and comprises a band-shaped fabric carrier 2. The thickness D of the adhesive tape 1 may preferably be in the range between 0.3 mm to 0.8 mm.
    The carrier 2 is preferably made of a polyester fabric, for which Fig. 4 (Table 1) contains two preferred specifications, which are designated "Type 1" and "Type 2". The specific basis weight of the support 2 may be in the range of 50 g / m 2 to 150 g / m 2, preferably in the range of 70 g / m 2 to 130 g / m 2.
    On one side of the carrier 2 is provided with a pressure-sensitive adhesive coating 3. This adhesive coating 3 consists of a UV-crosslinked acrylate adhesive whose specific basis weight may be in the range of 60 g / m2 to 120 g / m2. Such an adhesive is temperature stable and resistant to aging. The adhesive may be applied preferably before the backside coating of the backing 2 with LSR or thereafter.
    On the other side, a coating 4 is applied to the carrier 2, which is executed over the entire surface or a texture 5 forms. This coating 4 is wetted by water at least only partially or not at all and causes a high grip of the surface of the carrier 2. Preferably, this backside coating forms a pimped in the form of a dot pattern surface. The coating 4 consists of a thermally or radiation-crosslinked liquid silicone rubber (LSR). The hydrophobic character of the layer, which can be quantified by means of contact angle measurements, causes water-containing materials can not deposit on the coating 4. Thermal or radiation crosslinked LSR is also by other solvents than water, especially by organic solvents such as alcohol, pentane, hexane or other, especially in adhesives, paints and paints contained solvents having a lower surface tension than water, poorly wettable, therefore acts also for materials containing such substances, repellent and is thus resistant to contamination.
    The area-related number of dots in the coating 4 may preferably be in the range of 30 per cm 2 to 100 per cm 2. The specific basis weight of the coating 4 may be in the range of 50 g / m2 to 150 g / m2, preferably in the range of 90 g / m2 to 120 g / m2.
    The second embodiment of an adhesive tape 1 according to the invention shown in FIG. 2 shows that optionally on the support 2 under the layer 4 with the texture 5, which forms a first sub-layer there, in particular by means of a doctor blade system, a planar precoating of the support 2 is made, which also consists of a thermally or radiation-crosslinked liquid silicone rubber (LSR). As a result, a second sub-layer 6 is formed, by whose presence the service life of an adhesive tape 1 according to the invention can be extended up to a factor of ten, as evidenced in particular by the values of the abrasion resistance of the LSR coating in Table 2.
    2, in each case different height H of the studs formed from the dot texture 5, it is illustrated that the dot geometries are also variable within a print image in terms of shape, diameter and height H. A larger dot height H reduces the contact surface and facilitates the detachability (release).
    As illustrated in FIG. 3, the layer 4 consisting of LSR with the texture 5, specifically the dot pattern, can be applied to the carrier 2 in a technologically advantageous manner by screen printing, preferably in rotary screen printing. To realize this, over the moving in the direction of arrow P web of the carrier 2 a rotating in the direction of arrow R round screen 7 is shown, in which a doctor blade 8, by means of which the liquid silicone rubber mixture 9 through openings 10 in the round screen 7 the carrier surface is pressed. The carrier 2 is supported on the other side by a likewise rotatable impression cylinder 11.
    As already mentioned, constructions of the carrier 2 of the adhesive tape 1 according to the invention may preferably have the properties listed in Table 1, wherein in each case ranges are specified by the values given for Type 1 and Type 2 in which the values indicated in the table lines In each case, parameter values may be preferred - for example the number of warp threads in the range from 32 to 45 per cm and the number of weft threads in the range from 30 to 25 per cm. As can be seen from a comparison of the corresponding columns of Table 1, the two types of support differed in particular by their specific weight per unit area. The higher value of this size in "Type 2", together with the other parameters, causes the carrier 2 not to be hand-tearable unlike that of "Type 1". Both types advantageously ensure that the liquid silicone mixture 9 does not penetrate through the carrier 2.
    After a thermal or radiation-crosslinking of the liquid silicone rubber mixture 9, which can preferably take place in a temperature range of 150 ° C to 170 ° C, the two support structures were conventionally made into adhesive tapes 1 according to the invention by applying an acrylate Adhesive coating were covered. Adhesive tapes 1 according to the invention produced in this manner had the properties listed in Table 2 (FIG. 5)
    Properties on. Alternatively, the LSR coating can also be applied to an already self-adhesive finished fabric.
    The adhesive tape 1 of type 3 was in accordance with an embodiment of FIG. 2 - ie executed with two sub-layers 4, 6, but not - as shown - with variable nub height H, but with a uniform thickness of the sub-layers 4, 6th , whose specific weight per unit area was 100 g / cm 2, so that the total value given in the line "thickness of the silicone coating" was 200 g / cm 2.
    Table 2 highlights particularly the high bond strength to steel and the low adhesive force on the back of the tape, which is due to the design according to the invention and thus shows that the use of an interliner can be dispensed with. On uncoated PET fabric (without backside siliconization), the bond strengths were each in the ranges> 6 N / cm for type 1,> 5 N / cm for type 2 and> 6 N / cm for type 3.
    The parameters given in the two tables 1 and 2 as basic data of the carrier 2 and the tapes 1 were determined according to the following standards: EN ISO 2286-1 for the specific gravity of the carrier 1, fiber thickness (fineness) according to DIN 53830-3 , Thread density according to DIN EN 1049-2, DIN EN 1942 for the thickness D of the carrier 2 and the adhesive tape 1, DIN EN 14410 for the mechanical values, DIN EN 1939 for the bond strength, DIN EN 1944 for the unwind force of the adhesive tapes. The hand tearability was determined according to LV 312 or the Elmendorf test and the length-related thread strengths by multiplying the number of threads per cm with the thread count. The Rolling Ball test was carried out in accordance with ASTM D 3121. The above-mentioned contact angles can be determined in accordance with DIN EN 828 "Adhesives - Wettability - Determination by measuring the contact angle and the critical surface tension of solid surfaces".
    The parameters given in Table 2 document the advantageous achievable properties according to the invention, in particular the relatively high values of abrasion in the presence of two partial layers 4, 6. The abrasion test was carried out using a Abriebtester according to the common test guideline of the company Audi, BMW, DC and VW «Adhesive tapes for cable harnesses in motor vehicles» LV 312 on a 5 mm mandrel. After every 10 strokes a check was made. The final value was reached as soon as the backside coating (layer 4 or layer 4 and 6) was rubbed off the fabric of the carrier 2.
    The bond strength of an adhesive tape 1 according to the invention can be in particular in the range from 7.0 N / cm to 10 N / cm on steel and in the range from 0.05 N / cm to 1.0 N / cm on the back of the tape.
    To inventive adhesive tapes 1 type 1.2 and 3 and to comparative adhesive tapes, which included an uncoated adhesive tape with PET fabric carrier and on the other hand, the aforementioned commercial adhesive tape, which is known under the name «tesa Printer's Friend® 4863» is sliding resistance was determined.
    For this purpose, under standard climatic conditions (temperature: 20 ° C ± 2 ° C, relative humidity: 65% ± 4%), a steel plate with a net weight (including mandrel) of 220 g and with a surface of 100 mm2 with different weights weighed and pulled over the corresponding surfaces by means of a tensile tester with a sliding speed of 100 mm / min over a sliding path of 10 cm. The necessary force was measured. The steel plate complied with the requirements of the AFERA 5001 standard: "Stainless steel 1.4301", according to quality 2R in EN 10088-2, shiny with a roughness of 50 +/- 25 nm. The weights (1 kg, 2 kg and 5 kg) were adapted to the loading conditions of an adhesive tape in the coating process by reflecting the web tension during the production of the adhesive tape. Specifically, these weights each correspond to a web tension of about 10 N, 20 N and 50 N in the band and thus covered the practical range of 5 N to 100 N in the first approximation.
    From the results shown in Fig. 6 (Table 3) of the sliding resistance (calculated as based on the glide path tensile force under the specified weight load) can be seen as a tendency that an inventive adhesive tape 1 with nubs directly on PET (type 2) a has sufficient sliding resistance compared to the market standard. A smooth LSR surface or a combination of smooth and textured (type 3) brings significantly better values and offers a technical advantage in terms of the intended function. The market standard adhesive tape can not be wound on itself because the adhesive strength of the adhesive layer is too low to securely anchor the tape's tare weight to the backside coating so that the tape would unwind by itself.
    [0036] 1 adhesive tape 2 carrier 3 adhesive coating 4 layer with 5, first LSR sub-layer in FIG. 2 5 texture in FIG. 4
    权利要求:
    Claims (13)
    [1]
    6 second LSR sub-layer in FIG. 2 7 round screen (FIG. 3) 8 squeegee (FIG. 3) 9 liquid LSR compound (FIG. 3) 10 opening in 7 (FIG. 3) 11 impression cylinder (FIG. 3) D Thickness of 1 H height of 5 P transport direction of 2 (Fig. 3) R rotational direction of 7 (Fig. 3) claims
    1. A technical adhesive tape (1) for wrapping rollers or rollers or for covering handle or floor surfaces, with a band-shaped textile, consisting of a fabric carrier (2) on one side with a pressure-sensitive adhesive coating (3) and on the the other side is provided with at least one coating (4) forming a texture (5), which is at least only partially wettable by water so that a liquid forms a round hood on the coating (4), wherein a contact angle is less than 90 °, and which increases the grip of the surface opposite the textile support surface, characterized in that the pressure-sensitive adhesive coating (3) consists of a UV-crosslinked acrylate adhesive and the coating (4) consists of a thermally or radically crosslinked liquid silicone rubber ,
    [2]
    2. Adhesive tape (1) according to claim 1, characterized in that the adhesive tape (1) has a, by a according to DIN EN 1939, Stand 12-2003, certain bond strength in the range of 7.0 N / cm to 10 N. / cm on steel and in the range of 0.05 N / cm to 1.0 N / cm on a tape backing, so that the tape is rollable on itself wound.
    [3]
    3. adhesive tape (1) according to claim 1 or 2, characterized in that the carrier (2) is a polyester fabric.
    [4]
    4. Adhesive tape (1) according to one of claims 1 to 3, characterized in that the specific basis weight of the support (2) in the range of 50 g / m2 to 150 g / m2, preferably in the range of 70 g / m2 to 130 g / m2, lies.
    [5]
    5. Adhesive tape (1) according to one of claims 1 to 4 with a thickness (D) in the range of 0.3 mm to 0.8 mm.
    [6]
    6. Adhesive tape (1) according to one of claims 1 to 5, characterized in that the adhesive tape is formed by hand in the transverse direction tearing.
    [7]
    7. Adhesive tape (1) according to one of claims 1 to 6, characterized in that the specific basis weight of the adhesive coating (3) in the range of 60 g / m2 to 120 g / m2.
    [8]
    8. Adhesive tape (1) according to one of claims 1 to 7, characterized in that the texture (5) is in the form of a grid formed of rubber-elastic nubs.
    [9]
    9. adhesive tape (1) according to claim 8, characterized in that the area-related number of knobs of the grid in the range of 30 per cm2 to 100 per cm2.
    [10]
    10. Adhesive tape (1) according to one of claims 1 to 9, characterized in that the specific basis weight of the coating (4) in the range of 50 g / m2 to 150 g / m2, preferably in the range of 90 g / m2 to 120 g / m2, lies.
    [11]
    11. Adhesive tape (1) according to one of claims 1 to 10, characterized in that the coating (4) is applied in a screen printing process, in particular by rotary printing.
    [12]
    12. Adhesive tape (1) according to one of claims 1 to 11, characterized in that under the full surface or at least one texture (5) forming, consisting of the thermal or radiation-crosslinked liquid silicone rubber coating (4) directly on the support (2) a further, flat, also consisting of a thermally crosslinked liquid silicone rubber layer is arranged, wherein the full-surface or at least one texture (5) forming, consisting of the thermally or radically crosslinked liquid silicone rubber coating (4) forms a first sub-layer and the other, planar, also Forming of a thermally crosslinked liquid silicone rubber layer, a second sub-layer (6), so that on the support (2) consists of a two-part coating layer is formed.
    [13]
    13. An adhesive tape (1) according to claim 12, characterized in that the specific weight per unit area of the second partial layer (6) is in the range from 50 g / m 2 to 150 g / m 2, preferably in the range from 90 g / m 2 to 120 g / m 2. is and is preferably as large as that of the first sub-layer.
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    同族专利:
    公开号 | 公开日
    DE202012104291U1|2014-02-12|
    FR2997701A1|2014-05-09|
    FR2997701B1|2018-04-13|
    DE102013111673A1|2014-05-08|
    CH707204A2|2014-05-15|
    ITMI20131822A1|2014-05-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20040109980A1|2002-12-10|2004-06-10|Chen Sam H.|Grip tape with self-textured surface|
    EP1857152A1|2006-05-16|2007-11-21|Adolf Brunner|Grip tape|CN106474696A|2016-12-31|2017-03-08|桂林电子科技大学|A kind of tennis racket, racket handle|
    WO2019087099A2|2017-11-02|2019-05-09|3M Innovative Properties Company|Coextruded ribbon for roller surfaces background|
    法律状态:
    2018-05-15| PCAR| Change of the address of the representative|Free format text: NEW ADDRESS: HOLEESTRASSE 87, 4054 BASEL (CH) |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202012104291.6U|DE202012104291U1|2012-11-08|2012-11-08|Adhesive tape for wrapping rollers or rollers or for covering handle or stand surfaces|
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