EP3556480B1 - Richtmaschinenreinigungstücher und zugehörige verfahren - Google Patents
Richtmaschinenreinigungstücher und zugehörige verfahren Download PDFInfo
- Publication number
- EP3556480B1 EP3556480B1 EP18167519.0A EP18167519A EP3556480B1 EP 3556480 B1 EP3556480 B1 EP 3556480B1 EP 18167519 A EP18167519 A EP 18167519A EP 3556480 B1 EP3556480 B1 EP 3556480B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- adhesive layer
- leveler
- cleaning sheet
- ferrous
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0028—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by adhesive surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
Definitions
- the present invention relates to the use of a leveler cleaning sheet for cleaning the rolls of a leveler machine, such as the work rolls of a tension leveler, for example.
- the invention relates to a method of manufacturing a leveler cleaning sheet and to leveler cleaning sheets produced by said method.
- Leveler machines are widely applied for the processing of materials into flat shapes. For example, a leveler arrangement using multiple rolls may be used to process metal coils into flat sheets by application of high pressure (see Fig. 1 ).
- FIGS. 2A to 2D show a roll with typical contaminations, which generally appear as dark spots ( Fig. 2A ), which, when magnified, may be identified as metal ( Fig. 2B ), cloth and wood ( Fig. 2C ) and dust ( Fig. 2D ) contaminants.
- the present inventors found that using a leveler cleaning sheet comprising specific configuration and adhesive properties enables inexpensive, efficient, and simple in-line cleaning of leveler machine rolls.
- the present invention in accordance with claim 1, therefore relates to the use of a leveler cleaning sheet cleaning one or more rolls of a leveler machine, comprising contacting a leveler cleaning sheet with at least a part of the curved surface of the one or more rolls to enable cleaning by rotation of the one or more rolls; the leveler cleaning sheet comprising a substrate and a first adhesive layer provided over the substrate, and the surface of first adhesive layer contacting at least a part of the curved surface of the one or more rolls; wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals of higher than 10 cN/20mm.
- the leveler cleaning sheet comprises a second adhesive layer between the substrate and the first adhesive layer and in contact with the substrate, and a carrier layer between the first and the second adhesive layers; and wherein the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer.
- a further aspect of the present invention in accordance with claim 8, relates to a method of manufacturing a leveler cleaning sheet, comprising the steps of: providing a double-sided adhesive tape comprising a first adhesive layer, a second adhesive layer, a carrier layer between the first and the second adhesive layers, and an optional release liner in contact with the first adhesive layer; adhering the surface of the second adhesive layer to a substrate to provide the leveler cleaning sheet, wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals of higher than 10 cN/20mm, and wherein the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer.
- a leveler cleaning sheet comprising: a double-sided adhesive tape comprising a first adhesive layer, a second adhesive layer, a carrier layer between the first and the second adhesive layers, and an optional release liner in contact with the first adhesive layer; wherein the surface of the second adhesive layer is adhered to a substrate; wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals in the range of from 50 cN/20mm to 600 cN/20mm, and wherein the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer.
- the present invention in accordance with claim 1, relates to the use of a leveler cleaning sheet cleaning one or more rolls of a leveler machine, comprising contacting a leveler cleaning sheet with at least a part of the curved surface of the one or more rolls to enable cleaning by rotation of the one or more rolls; the leveler cleaning sheet comprising a substrate and a first adhesive layer provided over the substrate, and the surface of first adhesive layer contacting at least a part of the curved surface of the one or more rolls; wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals of higher than 10 cN/20mm.
- the leveler machine is generally not particularly limited as long as comprises work rolls supported by backup bearings, and may include flatteners, shape correction levelers and tension levelers, for example.
- the leveler machine is a tension leveler, which is usually configured to pull a strip (made of metals or alloys, such as hot rolled steel, cold rolled steel, stainless steel, aluminum, or copper, or of non-metallic specialized materials) beyond its yield point (i.e. the point on stress-strain curve which indicates the limit of elastic behavior and the beginning of plastic behavior) both by elongating and bending the strip over a series of work rolls in order to permanently eliminate edge wave and center buckle and correct excessive crossbow and coil set.
- a tension leveler which is usually configured to pull a strip (made of metals or alloys, such as hot rolled steel, cold rolled steel, stainless steel, aluminum, or copper, or of non-metallic specialized materials) beyond its yield point (i.e. the point on stress-strain curve which indicates the limit of elastic behavior and the beginning of plastic behavior
- FIG. 1 An exemplary processing line for the leveling of a metal coil and for the production of flat metal sheets is illustrated in Fig. 1 .
- a metal coil provided on a coil car (1) is fed through an uncoiler (2) and a triple roll-assembly (3), followed by a rewind shirr (4).
- the trimmed metal foil After passing a trimmer (5), which cuts the metal foil to a predetermined width, the trimmed metal foil enters the leveling machine (6) comprising a multiplicity of rolls (see dashed line marking), while the scrap material exiting the trimmer (5) is wound on a scrap winder (7).
- the leveled material is then conveyed to a shirr machine (9), wherein the metal foil is cut into flat sheets with predetermined length and collected as finished goods (10).
- the leveler cleaning sheet is inserted into the leveler machine and passed through the running machine, preferably under normal leveling conditions. Accordingly, the rolls do not have to be removed or made accessible as in manual cleaning operations and necessary adjustments may be kept at a minimum.
- the line speed of the leveler 0.5 to 2 m/min, preferably to 0.7 to 1.3 m/min.
- other line speeds may also be selected by the skilled artisan depending on the desired cleaning performance and the available time for the cleaning operation.
- passing the sheet through the leveler once is sufficient for effective cleaning. Accordingly, the actual duration of the cleaning process is remarkably shortened and takes less than one minute for most tension levelers, typically around 20 seconds. In comparison to most conventional techniques, the production loss is therefore significantly reduced.
- the leveler roll gap may be suitably adjusted by the skilled artisan depending on the thickness of the roll cleaning sheet.
- the leveler cleaning sheet used in the method according to the first embodiment of the present invention may be configured according to cleaning sheet (20a) shown in Fig. 3A , comprising a substrate (21) and a first adhesive layer (22).
- the used leveler cleaning sheet comprises one or more further layers between the substrate and the first adhesive layer, for instance a second adhesive layer (23) according to the cleaning sheet (20b) depicted in Fig. 3B
- a leveler cleaning sheet according to Fig. 3C is used the sheet (20c) comprising a second adhesive layer (23) between the substrate (21) and the first adhesive layer (22) and in contact with the substrate (21), and a carrier layer (24) between the first and the second adhesive layers (22) and (23).
- a double-sided pressure-sensitive adhesive tape comprising the first adhesive layer, the second adhesive layer, and the carrier layer between the first and the second adhesive layers, to the substrate in order to provide the leveler cleaning sheet.
- the step of adhering the surface of the second adhesive layer to a substrate may be performed manually or mechanically, e.g. by a lamination device.
- the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer in order to prevent delamination of the double-sided adhesive tape from the substrate during contact of the first substrate with the one or more rolls to be cleaned.
- the leveler roll gap may be suitably adjusted by the skilled artisan depending on the thickness and the rigidity of the roll cleaning sheet.
- an efficient in-line cleaning method is provided, which is simultaneously inexpensive and environment-friendly, especially when compared to solvent-based cleaning methods.
- the method enables efficient cleaning of the rolls with a single pass of the cleaning sheet through the leveler, which remarkably accelerates the cleaning process and thus dramatically improves production efficiency.
- the properties and compositions of the leveler cleaning sheet including the first adhesive layer and the substrate, as well as the optional carrier layer and the optional second adhesive layer will be further described in conjunction with the second embodiment below, including preferred embodiments thereof. Overall, it will be appreciated that the preferred features of the first and second embodiments specified above may be combined in any combination, except for combinations where at least some of the features are mutually exclusive.
- the present invention in accordance with claim 8, relates to a method of manufacturing a leveler cleaning sheet, comprising the steps of: providing a double-sided adhesive tape comprising a first adhesive layer, a second adhesive layer, a carrier layer between the first and the second adhesive layers, and an optional release liner in contact with the first adhesive layer; adhering the surface of the second adhesive layer to a substrate to provide the leveler cleaning sheet, wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals of higher than 10 cN/20mm, and wherein the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer.
- the initial step of method of manufacturing a leveler cleaning sheet according to the present invention lies in the provision of a double-sided adhesive tape in accordance to Fig. 3D , comprising a first adhesive layer (22), a second adhesive layer (23), a carrier layer (24) between the first adhesive layer (22) and the second adhesive layer (23), and an optional release liner (25) in contact with the first adhesive layer (22).
- a double-sided adhesive tape in accordance to Fig. 3D , comprising a first adhesive layer (22), a second adhesive layer (23), a carrier layer (24) between the first adhesive layer (22) and the second adhesive layer (23), and an optional release liner (25) in contact with the first adhesive layer (22).
- Such double-sided adhesive tapes (20d) may be manufactured from scratch or may be suitably selected from commercially available products.
- the "adhesion to ferrous or non-ferrous metals”, as used herein, denotes the peel adhesion property on a clean and dry surface made of a ferrous or non-ferrous metal, which may include surfaces of metals and metal alloys, such as steel, for example. While not being limited thereto, in a preferred embodiment of the present invention, the wording "adhesion to ferrous or non-ferrous metals", as used herein, denotes the peel adhesion on BA steel determined according to EN 1939.
- the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals in the range of from 10 to 600 cN/20mm, further preferably in the range of from 50 to 500 cN/20mm, especially preferably in the range of from 100 to 450 cN/20mm, and most preferably in the range of from 150 to 400 cN/20mm, at which particularly advantageous roll cleaning efficiencies are achieved.
- Suitable formulations for manufacturing the first and second adhesive layers with the above-cited adhesion properties will be known to the skilled artisan and are not particularly limited.
- exemplary adhesive formulations for the first adhesive layer may include acrylate-based, rubber-based, urethane-based, silicone-based adhesive formulations and combinations of two or more thereof, preferably at contents of 50 wt.-% to 100 wt.-%, more preferably at contents of 60 wt.-% to 98 wt.-% by weight, such as from 70 wt.-% to 95 wt.-%, or from 80 wt.-% to 93 wt.-%, for example, each based on the total weight of the first adhesive layer.
- the first adhesive layer comprises an acrylic pressure-sensitive adhesive.
- the acrylic pressure-sensitive adhesive preferably comprises a (meth)acrylic polymer as the main component (e.g. at a content of 50% by weight or more of the acrylic pressure-sensitive adhesive).
- the (meth)acrylic polymer may be selected from a block copolymer, an alternating copolymer, and a graft copolymer, for example.
- the (meth)acrylic polymer may be prepared by polymerization of one or more C 1 -C 18 -alkyl (meth)acrylate monomers.
- the (meth)acrylic polymer may also include other monomers copolymerizable with alkyl (meth)acrylate, e.g. for introducing a crosslinking site into the acrylic polymer or enhancing an aggregating ability of the acrylic polymer.
- the copolymerizable monomer component may be used solely or in combination of two or more thereof.
- the ratio of the alkyl(meth)acrylate to the total amount of the monomer components constituting the acrylic polymer is desirably 50% by weight or more.
- Exemplary urethane-based adhesive formulations include, but are not limited to polyisocyanate compounds (e.g. diphenylmethane diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate) reacted with polyols (e.g. polyether polyols, polyester polyols, polycarbonate polyols, polycaprolactone polyols, etc.).
- polyisocyanate compounds e.g. diphenylmethane diisocyanate, tolylene diisocyanate, hexamethylene diisocyanate
- polyols e.g. polyether polyols, polyester polyols, polycarbonate polyols, polycaprolactone polyols, etc.
- Exemplary rubber-based adhesive formulations include, but are not limited to natural rubbers or synthetic rubber-based adhesives (such as adhesives based on SBS, SBR, SEPS, SIS, SEBS, polyisobutylene, and/or butyl rubber, for example).
- polymer-based adhesives including polymerization types (anionic, cationic or radical polymerization; solution, emulsification, mass, and suspension polymerization) and reaction conditions, are well-known in the art and may be appropriately selected by the skilled artisan depending on the used starting materials (i.e. monomers).
- polymerization types anionic, cationic or radical polymerization; solution, emulsification, mass, and suspension polymerization
- reaction conditions are well-known in the art and may be appropriately selected by the skilled artisan depending on the used starting materials (i.e. monomers).
- the first adhesive layer may comprise further additives, which may be appropriately selected by the skilled artisan from known materials, including but not limited to tackifiers (e.g. tackifying resins including one or more of rosin-based tackifying resins, terpene-based tackifying resins, hydrocarbon-based tackifying resins, epoxy-based tackifying resins, polyamide-based tackifying resins, elastomer-based tackifying resins, phenol-based tackifying resins, and/or ketone-based tackifying resins, for example), crosslinking agents (e.g.
- tackifiers e.g. tackifying resins including one or more of rosin-based tackifying resins, terpene-based tackifying resins, hydrocarbon-based tackifying resins, epoxy-based tackifying resins, polyamide-based tackifying resins, elastomer-based tackifying resins,
- isocyanate-based crosslinking agents epoxy-based crosslinking agents, oxazolidine-based crosslinking agents, aziridine-based crosslinking agents, melamine-based crosslinking agents, peroxide-based crosslinking agents, urea-based crosslinking agents, metal alkoxide-based crosslinking agents, metal chelate-based crosslinking agents, metal salt-based crosslinking agents, carbodiimide-based crosslinking agents, and/or amine-based crosslinking agents; preferably used at (total) contents of 0.1 to 20 wt.-% based on total weight of the adhesive layer), plasticizers, polymerization inhibitors, emulsifiers, pH buffering agents, foam inhibitors, stabilizers, anti-aging agents, UV-absorbers, antioxidants, anticorrosion-agents, light stabilizers, peeling regulators, softening agents, fillers, colorants (pigment, dye, etc.), surfactants, antistatic agents, and the like.
- the adhesion of the second adhesive layer to ferrous or non-ferrous metals is not particularly limited as long as it is higher than that of the first adhesive layer.
- the adhesion to ferrous or non-ferrous metals of the first adhesive layer is preferably less than 30%, more preferably less than 25% of that of the second adhesive layer.
- the adhesion to ferrous or non-ferrous metals of the first adhesive layer is higher than 4%, more preferably higher than 6% of that of the second adhesive layer.
- the adhesion to ferrous or non-ferrous metals of the second adhesive layer is in the range of from 800 to 2100 cN/20mm, further preferably 1000 to 2000 cN/20mm, more preferably 1200 to 1800 cN/20 mm, most preferably 1400 to 1650 cN/20mm.
- Working within these ranges effectively prevents delamination, while still allowing the double-sided tape to be easily removed after the cleaning process, thereby enabling the substrate to be reused for multiple roll cleaning operations.
- the material constituting the second adhesive layer is not particularly limited and may be suitably selected depending on its adhesion properties on ferrous or non-ferrous metals.
- the second adhesive layer comprises an acrylic pressure-sensitive adhesive.
- the second adhesive layer comprises a (meth)acrylic polymer as the main component (e.g. at a content of 50% by weight or more of the acrylic pressure-sensitive adhesive) according to the above description of the first adhesive layer.
- the acrylic pressure-sensitive adhesive used in the second adhesive layer is prepared by polymerizing a monomer composition comprising primarily an alkyl (meth)acrylate (e.g. a C 1 -C 18 -alkyl (meth)acrylate) and one or more modifying monomer(s) copolymerizable with the alkyl (meth)acrylate.
- hydroxyl group-containing monomers including hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 8-hydroxyoctyl (meth)acrylate, 12-hydroxylauryl (meth)acrylate, N-methylol(meth)acrylamide, vinyl alcohol, allyl alcohol, 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, diethyleneglycol monovinyl ether, for example), carboxyl group-containing monomers ((meth)acrylic acid, carboxyl ethyl (meth)acrylate, itaconic acid, maleic acid, fumaric acid, etc.), styrene-based monomers (such as styrene or styrene derivatives comprising alkyl, halogen, or haloalkyl groups, for example), cyano group-
- epoxy group-containing monomers e.g. glycidyl (meth)acrylate
- amide group-containing monomers e.g. (meth)acrylamide
- imide group-containing monomers e.g. N-cyclohexyl maleimide
- vinyl ethers and vinyl esters e.g. vinyl propionate
- the carrier layer (24) is composed of materials that may be suitably selected by the skilled artisan, including polymers, metals, nonwoven fabrics, paper and combinations thereof, for example.
- the carrier layer comprises a polymer, such as a polyester (e.g. polyethylene terephthalate (PET), polybutylene terephthalate, polyethylene naphthalate etc.), polyamide (aliphatic or aromatic polyamides, for example) and/or polyolefin (polyethylene, polypropylene, polybutylene, etc.).
- PET polyethylene terephthalate
- polybutylene terephthalate polyethylene naphthalate etc.
- polyamide aliphatic or aromatic polyamides, for example
- polyolefin polyethylene, polypropylene, polybutylene, etc.
- a carrier layer comprising a polyester-based material is particularly preferred, as it allows easy lamination and use of rolls of double-sided adhesive tapes, as opposed to being limited to the application of sheets.
- the carrier layer may further contain additives, such as antioxidants, UV-absorbing agents, antistatic agents, light stabilizers, fillers, colorants etc.
- additives such as antioxidants, UV-absorbing agents, antistatic agents, light stabilizers, fillers, colorants etc.
- the carrier layer may be composed of a single layer or of multiple layers having different compositions.
- the thickness of the carrier layer may be suitably selected by the skilled artisan. Preferable thicknesses range from 1 ⁇ m to 1000 ⁇ m. Particularly preferred is a carrier layer thickness of from 50 ⁇ m to 250 ⁇ m, which enables easy die-cutting of the resulting cleaning sheet and renders it stable towards film burrs.
- the optional release liner may be suitably selected from materials known in the art. Examples thereof include, but are not limited to siliconized paper, PE-coated paper, siliconized PE-coated paper, PET, PP, etc.
- the double-adhesive tape used in the present invention may be provided with a release liner on both the first and the second adhesive layers. In case two release liners are used, they may be identical or different.
- the leveler cleaning sheet may be prepared on-site, by adhering the double-sided adhesive tape on the chosen substrate (in which case a release liner has preferably been also provided on the first adhesive layer, which may facilitate the handling for the operation personnel) or before delivery to the customer for easier application.
- the method of the second embodiment further comprises the step of winding the cleaning sheet into a roll form, wherein the substrate contacts the first adhesive layer, and the substrate is preferably on the outside surface of the roll.
- a configuration significantly facilitates the handling and the cleaning operation for the operating personnel, and further enables the insertion using a coil car, similarly to the process shown in Fig, 1 .
- no release liner on the first adhesive layer is necessary, so that the manufacturing costs may be further reduced.
- the roll is provided with perforations in parallel to the roll axis.
- the cleaning sheet may comprise a release liner having larger dimensions than the double-sided adhesive tape.
- the width of release liner may extend beyond the surface of the double-sided adhesive tape on at least one side thereof (for example, at one or both edges in width direction if wound on a roll, by selecting a higher release liner width relative to the width double-sided adhesive tape).
- FIGs 4A to 4H An exemplary manual application of such a cleaning sheet roll is illustrated in Figures 4A to 4H , including the steps of unrolling (an optionally pre-perforated) roll ( Figs. 4A and 4B ), tearing off (if perforated) or cutting the roll ( Figs. 4C and 4D ), manually applying the thus obtained sheet onto the roll material surface ( Fig. 4E ), optionally with a scraping tool ( Fig. 4F ), and removing the top release liner from the sheet ( Figs. 4G and 4H ), which may be further facilitated by providing the cleaning sheet with dry-edges at the side of the sheet (e.g. by dimensioning the top release liner larger than the double-sided adhesive tape).
- the total thickness of the double-sided adhesive tape without the optional release liner(s) is preferably in a range of from 1 ⁇ m to 5 mm, further preferably in a range of from 5 ⁇ m to 500 ⁇ m, as may be determined according to EN 1942, for example.
- the double-sided pressure-sensitive adhesive tape exhibits a static shear of 10 mm/3h or less, more preferably of 5 mm/3h or less, further preferably of 2 mm/3h or less, which may be determined according to EN 1943.
- the double-sided adhesive tape may comprise further layers between the first and second adhesive layers beside of the carrier layer.
- the double-sided adhesive tape may comprise one or more adhesive layers and/or carrier-type layers between the carrier layer and one of the first and second adhesive layers.
- a three layer-configuration consisting of a first adhesive layer, a second adhesive layer and a carrier layer between and in contact with the first and the second adhesive layers (as well as one or two optional release liner(s) on the surface(s) of the adhesive layer(s)) is preferable.
- the substrate comprised in any of the above-described cleaning sheets may be suitably selected by the skilled artisan depending on the desired properties of the cleaning sheets and may be composed of a single layer or multiple layers with different compositions. It is important to note that the material constituting the substrate of the leveler cleaning sheet is not particularly limited as long as it is able to withstand the mechanical forces exerted by the leveler. For instance, the substrate may differ from the strip material for which the leveling process has been set up. As exemplary materials, metals (e.g. iron, copper, aluminum, zinc), alloys (e.g.
- the substrate may comprise a metal, an alloy, or a polymer.
- the substrate material is selected from a material having a density of less than 3 kg/dm 3 , such as aluminum or polymer-based materials, for example, since such light-weight materials may be easily handled by a single operator as opposed to steel sheets, for example.
- Polymer-based materials including, but not limited to polyamide or PTFE and derivatives thereof, are particularly preferred.
- the method of the second embodiment enables facilitated and inexpensive production of a leveler cleaning sheet with excellent roll cleaning performance.
- the present invention in accordance with claim 10, relates to a leveler cleaning sheet.
- the leveler cleaning sheet comprises: a first adhesive layer, a second adhesive layer, a carrier layer between the first and the second adhesive layers, and a substrate in contact with the second adhesive layer to a substrate to provide the leveler cleaning sheet, wherein the first adhesive layer exhibits an adhesion to ferrous or non-ferrous metals in the range of from 50 cN/20mm to 600 cN/20mm, and wherein the adhesion to ferrous or non-ferrous metals of the second adhesive layer is higher than that of the first adhesive layer.
- An exemplary configuration is shown in Fig. 3C .
- the cleaning sheet is wound into a roll and further preferably comprises perforations in parallel to the roll axis. which significantly facilitates the handling of the cleaning sheet and the roll cleaning procedure so as to be executable by a single person (see Figs. 4A to 4H ), and also allows for installation in a coil car in the feed section of leveler machines.
- a release liner having larger dimensions than the double-sided adhesive tape may be provided.
- the width of release liner may extend beyond the surface of the double-sided adhesive tape on one or both sides of the wound roll (e.g.
- a leveler cleaning sheet with a configuration according to Fig. 3C was prepared by manually laminating multiple double-sided adhesive tapes (Nitto Double Coated Tape 61390; tape thickness without liner: 0.090 mm; adhesion to non-ferrous and ferrous metal surfaces: 1500 cN/20mm (open side), 350 cN/20mm (closed side); carrier: 0.012 mm transparent polyester) at the open sides onto a cleaned metallic substrate sheet (width: 1524 mm).
- the thus obtained leveler cleaning sheet was passed through a tension leveler machine having a working roll (width: 1600 mm) contaminated with metal, dust and other dirt particles due to the metal sheet leveling under typical conditions, at a line speed of approximately 1 m/min.
- the cleaning sheet Upon exiting the leveler, the cleaning sheet was visually inspected (see Fig. 3 ).
- the photograph in Fig. 5 shows that nearly all dirt particles on the working roll effectively adhered to the layer of the leveler cleaning sheet corresponding to the first adhesive layer within one or a few revolution(s) of the working roll. As is indicated by the dashed line, the cleaning efficiency may be easily judged based on the visual appearance of the cleaning sheet.
- Fig. 6A The cleaning test according to Example 1 was repeated, with the exception that A3-shaped Nitto Double Coated Tape 61390 was manually applied onto the substrate in the arrangement shown in Fig. 6A .
- the visual appearance of the cleaning sheet exiting the leveler machine is depicted in Fig. 6B .
- major dirt particles effectively adhered to the layer of the leveler cleaning sheet corresponding to the first adhesive layer.
- the leveler was opened and the cleaning performance was evaluated based on the appearance of the working roll.
- Fig. 7 is a photograph of the opened leveler, which shows that the part of the working roll that contacted the cleaning sheet (right hand side) has been effectively cleaned when compared to the uncleaned area of the working roll (left hand side).
- the method according to the present invention effectively and quickly cleans the contaminated rolls of a leveler machine, enables simple and cost-effective cleaning operation, and allows the leveler operator to easily assess the degree of contamination of the working rolls.
Landscapes
- Cleaning In General (AREA)
- Adhesive Tapes (AREA)
Claims (16)
- Verwendung eines Richtmaschinen-Reinigungsblatts (20a; 20b; 20c) zum Reinigen einer oder mehrerer Walzen einer Richtmaschine, umfassend das In-Kontakt-Bringen des Richtmaschinen-Reinigungsblatts (20a; 20b; 20c) mit mindestens einem Teil der gekrümmten Oberfläche der einen oder mehreren Walzen, um eine Reinigung durch Rotation der einen oder mehreren Walzen zu ermöglichen;wobei das Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) ein Substrat (21) und eine erste Klebeschicht (22), die über dem Substrat (21) bereitgestellt ist, umfasst und die Oberfläche der ersten Klebeschicht (22) mindestens einen Teil der gekrümmten Oberfläche der einen oder mehreren Walzen berührt; undwobei die erste Klebeschicht (22) eine Haftung auf Eisen- oder Nichteisenmetallen von mehr als 10 cN/20 mm aufweist.
- Verwendung nach Anspruch 1, wobei das Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) eine zweite Klebeschicht (23) zwischen dem Substrat und der ersten Klebeschicht (22) und in Kontakt mit dem Substrat (21) umfasst, und eine Trägerschicht (24) zwischen der ersten und der zweiten Klebeschicht (22; 23); und wobei die Haftung der zweiten Klebeschicht (23) an Eisen- oder Nichteisenmetallen höher ist als jene der ersten Klebeschicht (22).
- Verwendung nach Anspruch 2, ferner umfassend das Aufkleben eines doppelseitigen Haftklebebandes mit einer ersten Klebeschicht (22), einer zweiten Klebeschicht (23), einer Trägerschicht (24) zwischen der ersten und der zweiten Klebeschicht (22; 23) auf ein Substrat (21), um das Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) bereitzustellen.
- Verwendung nach einem der Ansprüche 2 oder 3, wobei die Haftung der ersten Klebeschicht (22) an Eisen- oder Nichteisenmetallen weniger als 25% derjenigen der zweiten Klebeschicht (23) beträgt.
- Verwendung nach einem der Ansprüche 2 bis 4, wobei die erste Klebeschicht (22) einen Acryl-Haftkleber umfasst.
- Verwendung nach einem der Ansprüche 1 bis 4, wobei die erste Klebeschicht (22) eine Haftung auf Eisen- oder Nichteisenmetallen im Bereich von 100 bis 450 cN/20mm aufweist und die zweite Klebeschicht (23), falls vorhanden, eine Haftung auf Eisen- oder Nichteisenmetallen im Bereich von 1000 bis 2000 cN/20 mm aufweist.
- Verwendung nach einem der Ansprüche 1 bis 6, wobei das Substrat (21) ein Metall, eine Legierung oder ein Polymer umfasst.
- Verfahren zur Herstellung eines Richtmaschinen-Reinigungsblatts (20a; 20b; 20c), umfassend die Schritte:Bereitstellen eines doppelseitigen Klebebands, das eine erste Klebeschicht (22), eine zweite Klebeschicht (23), eine Trägerschicht (24) zwischen der ersten und der zweiten Klebeschicht (22; 23) und eine optionale Trennfolie (25) in Kontakt mit der ersten Klebeschicht (22) umfasst; undAnkleben der Oberfläche der zweiten Klebeschicht (23) an ein Substrat, um das Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) bereitzustellen;wobei die erste Klebeschicht (22) eine Haftung an Eisen- oder Nichteisenmetallen von mehr als 10 cN/20 mm aufweist, undwobei die Haftung der zweiten Klebeschicht (23) an Eisen- oder Nichteisenmetallen höher ist als jene der ersten Klebeschicht (22).
- Verfahren zur Herstellung eines Richtmaschinen-Reinigungsblatts (20a; 20b; 20c) nach Anspruch 8, ferner umfassend den Schritt des Aufwickelns des Reinigungsblatts (20a; 20b; 20c) zu einer Rolle, wobei das Substrat in Kontakt mit der ersten Klebeschicht (22) steht.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c), umfassend:ein doppelseitiges Klebeband, das eine erste Klebeschicht (22), eine zweite Klebeschicht (23), eine Trägerschicht (24) zwischen der ersten und der zweiten Klebeschicht (22; 23) und eine optionale Trennfolie (25) in Kontakt mit der ersten Klebeschicht (22) umfasst;wobei die Oberfläche der zweiten Klebeschicht (23) an einem Substrat (21) haftet;wobei die erste Klebeschicht (22) eine Haftung an Eisen- oder Nichteisenmetallen im Bereich von 50 cN/20 mm bis 600 cN/20 mm aufweist, undwobei die Haftung der zweiten Klebeschicht (23) an Eisen- oder Nichteisenmetallen höher ist als jene der ersten Klebeschicht (22).
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach Anspruch 10, wobei das Reinigungsblatt (20a; 20b; 20c) zu einer Rolle gewickelt ist und optional Perforationen parallel zur Rollenachse aufweist.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach Anspruch 10 oder 11, wobei das Reinigungsblatt (20a; 20b; 20c) eine Trennschicht (25) mit größeren Abmessungen als das doppelseitige Klebeband umfasst.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach einem der Ansprüche 10 bis 12, wobei die erste Klebeschicht (22) eine Haftung an Eisen- oder Nichteisenmetallen im Bereich von 100 bis 450 cN/20 mm aufweist, und die zweite Klebeschicht (23) eine Haftung auf Eisen- oder Nichteisenmetallen im Bereich von 1000 bis 2000 cN/20 mm aufweist.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach einem der Ansprüche 10 bis 13, wobei die erste Klebeschicht (22) einen druckempfindlichen Acrylklebstoff umfasst.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach einem der Ansprüche 10 bis 14, wobei das Substrat (21) ein Metall, eine Legierung oder ein Polymer umfasst.
- Richtmaschinen-Reinigungsblatt (20a; 20b; 20c) nach einem der Ansprüche 10 bis 15, wobei das Substrat (21) ein Polymer umfasst.
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EP18167519.0A EP3556480B1 (de) | 2018-04-16 | 2018-04-16 | Richtmaschinenreinigungstücher und zugehörige verfahren |
PCT/EP2019/059832 WO2019201942A1 (en) | 2018-04-16 | 2019-04-16 | Leveler cleaning sheets and related methods |
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EP18167519.0A EP3556480B1 (de) | 2018-04-16 | 2018-04-16 | Richtmaschinenreinigungstücher und zugehörige verfahren |
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JPH03165902A (ja) * | 1989-11-24 | 1991-07-17 | Kawasaki Steel Corp | 搬送ロールの付着塵埃除去方法 |
US5255549A (en) * | 1992-06-10 | 1993-10-26 | The Monarch Machine Tool Company | Tension leveler roll cleaning system and method |
WO2007049462A1 (ja) * | 2005-10-25 | 2007-05-03 | Nitto Denko Corporation | クリーニングシート、クリーニング機能付搬送部材および基板処理装置のクリーニング方法 |
US7637132B2 (en) | 2006-02-06 | 2009-12-29 | Butech Bliss | Work roll scraper for roller levelers |
JP5148413B2 (ja) * | 2008-08-29 | 2013-02-20 | 日東電工株式会社 | クリーニング機能付パネルおよびそれを用いた基板処理装置のクリーニング方法 |
GB2532255B (en) * | 2014-11-13 | 2020-04-29 | Itw Ltd | Line cleaner |
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