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WO1992011332A1 - Ruban adhesif decollable - Google Patents

Ruban adhesif decollable Download PDF

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Publication number
WO1992011332A1
WO1992011332A1 PCT/US1991/007779 US9107779W WO9211332A1 WO 1992011332 A1 WO1992011332 A1 WO 1992011332A1 US 9107779 W US9107779 W US 9107779W WO 9211332 A1 WO9211332 A1 WO 9211332A1
Authority
WO
WIPO (PCT)
Prior art keywords
tape
removable
sensitive adhesive
pressure
substrate
Prior art date
Application number
PCT/US1991/007779
Other languages
English (en)
Inventor
Karl W. Kreckel
Naimul Karim
Original Assignee
Minnesota Mining And Manufacturing Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Minnesota Mining And Manufacturing Company filed Critical Minnesota Mining And Manufacturing Company
Priority to JP3518488A priority Critical patent/JPH06503848A/ja
Priority to AU89220/91A priority patent/AU653561B2/en
Priority to BR9107272A priority patent/BR9107272A/pt
Publication of WO1992011332A1 publication Critical patent/WO1992011332A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/308—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive

Definitions

  • the invention relates to a high performance pressure-sensitive adhesive tape comprising a backing and an acrylic pressure-sensitive adhesive layer, that can be firmly adhered to a substrate and yet be removed without damage to the substrate, and substantially without adhesive transfer to the substrate.
  • Acrylic pressure-sensitive adhesive tapes are well known in the art. They are primarily used in applications requiring high adhesion and shear properties, such as the automotive industry. Once placed, these tapes are not ordinarily removable. Delicate substrates would suffer substantial damage; substrates such as stainless steel would not suffer damage; however, because such tapes typically have an adhesive strength which is greater than the cohesive strength, the tape would not cleanly remove, but would leave large portions of adhesive, both with and without backing, on the substrate. In the case of a double- coated pressure-sensitive adhesive tape, removability would be even more difficult, as no large surface of the tape would be available to grasp or peel. Attempting removal of such a tape would typically require destruction or grave damage to at least one of the substrates. Even metal substrates would be deformed in an attempt to peel the two substrates apart.
  • Acrylic copolymer adhesives are well known in the art as high performance permanent bond adhesives.
  • alkyl acrylate copoly ers are described which are predominantly alkyl esters of acrylic acid having from 4 to 14 carbon atoms, and further comprise a minor amount (3-12%, preferably 4- 8%) of a polar copolymerizable monomer such as acrylic acid.
  • Such adhesives are widely popular as they are readily available and provide a good balance of tack, shear and peel properties on a variety of substrates at a relatively low cost.
  • U.S. Patent No. 4,181,752 discloses a process of ultraviolet photopolymerization of alkyl acrylate esters and polar copolymerizable monomers to form the acrylate copoly er. Martens teaches that intensity and spectral distribution of the irradiation must be controlled in order to attain desirable cohesive strengths and peel resistance. The photopolymerization is preferably carried out in an inert atmosphere as oxygen tends to inhibit the reaction. Adhesive properties for tapes made via the Martens process are improved over those made by solution polymerization. Further, because of the vast reduction is solvents required, the tapes are produced in a more environmentally responsible manner.
  • microspheres are prepared by aqueous suspension polymerization of alkyl acrylate monomers and ionic comonomers, e.g., sodium methacrylate, in the presence of an anionic ⁇ mulsifier.
  • ionic comonomers e.g., sodium methacrylate
  • an anionic ⁇ mulsifier e.g., sodium methacrylate
  • the use of a water- soluble, substantially oil-insoluble ionic comonomer is critical to preventing coagulation or agglomeration of the microspheres.
  • 4,166,152 (Baker et al.) discloses solid, inherently tacky (meth)acrylate microspheres which are prepared from non-ionic alkyl acrylate or methacrylate monomers in the presence of both an emulsifier and an ionic suspension stabilizer having an interfacial tension sufficient to prevent microsphere agglomeration.
  • U.S. Patent No. 4,968,562 discloses hollow, inherently tacky, acid-free acrylic microspheres having multiple inclusions, each inclusion being less than 10% of the diameter of the microsphere, the total inclusions being more than 10% of the diameter of the microsphere.
  • microsphere adhesives or other repositionable adhesives are permanently removable and repositionable. They are not capable of permanent adhesion should such become desirable.
  • U.S. Patent No. 4,024,312 discloses an easily removable pressure-sensitive adhesive tape which may be removed by stitching it length-wise in a direction substantially prallel to the surface.
  • the backing is disclosed to possiss an elastic recovery from 50% of at least 75%.
  • Useful adhesives may be conventional rubber resin adhesives or ABA block copolymers, in which case a tackifier must also be included. No high performance adhesives or acrylic adhesives are disclosed.
  • Another type of removable pressure-sensitive adhesives is a temporarily removable adhesive.
  • One commercially available type of adhesive contains hollow spheroidal particles, as described in U.S. Patent Nos. 3,314,834, and 3,331,729, adhesive-coated particle is placed into position and may be adjust until a satisfactory position is reached. When permanent adhesion is desired, sufficient pressure must be applied, either by hand or roller, to rupture the hollow particles. A permanent bond is then established.
  • none of the adhesives disclosed above have high adhesive performance, i.e., high shear and tack such that the adhesive may remain permanently bonded to the substrate, if desired, and yet possess a mechanism for long term removability without damage to the substrate or adhesive transfer.
  • the present invention provides a removable pressure-sensitive adhesive tape comprising a highly extensible backing, bearing on at least one major surface thereof a layer of photopolymerized acrylic pressure- sensitive adhesive, said tape being capable of being firmly bonded to a substrate and being further capable of being removed therefrom after only being stretched at an angle no greater than about 35* from the surface of the substrate.
  • the acrylic pressure-sensitive adhesive comprises an acrylic polymer of monomers containing: a) at least about 70 parts of an alkyl acrylate monomer, the alkyl groups of which have an average of 4 to 12 carbon atoms, and b) from 0 to about 30 parts of a monoethylenically unsaturated monomer, and c) from about 1 0.01 part to about 1 part of a photoinitiator.
  • the tape can be firmly bonded to a substrate and then can be removed by simply stretching the tape in a direction up to an angle of about 35* from the surface of the substrate, preferably up to about 30', more preferably up to about 10* without leaving traces of adhesive residue, and without imparting any perceptible damage to the surface of the substrate.
  • the invention further provides a double-coated tape comprising a backing bearing adhesive layers on both major surfaces thereof.
  • the adhesive of each layer can be similar or different chemical composition, of equivalent of different adhesion properties, of equivalent or different thickness, and coated or laminated in the same or different manner.
  • Preferred double-coated tapes comprise high-performance acrylic adhesive layers on both major surfaces.
  • Acrylic pressure-sensitive adhesives useful in tapes of the invention are formed from at least one alkyl acrylate monomer, preferably a monofunctional unsaturated acrylate ester or non-tertiary alkyl alcohol, the alkyl groups of which have from 1 to about 14 carbon atoms.
  • alkyl acrylate monomers include, for example, isoo ⁇ tyl acrylate, isononyl acrylate, 2-ethylhexyl acrylate, decyl acrylate, dodecyl acrylate n-butyl acrylate, and hexyl acrylate.
  • the alkyl acrylate monomers can be used to form homopolymers, or they can be copolymerized with polar copolymerizable monomers or modifying monomers.
  • Useful polar copolymerizable monomers are selected from strongly polar and moderately polar monomers.
  • the alkyl acrylate monomer generally comprises at least about 75% of the final poly et, preferably from about 85% to about 95%.
  • the alkyl acrylate monomer When copolymerized with moderately polar copolymerizable monomers, the alkyl acrylate monomer generally comprises at least about 70% if the photopolymerized final polymer, preferably from about 70% to about 95%.
  • Strongly polar monomers include acrylic acid, itaconi ⁇ acid, hydroxyalkyl acrylates, cyanoalkyl acrylates, acrylamides, and substituted acrylamides.
  • Useful moderately polar monomers include N- vinyl caprolactam, N-vinyl pyrrolidone, acrylonitrile, vinyl chloride and diallyl phthalate.
  • the pressure-sensitive adhesive compositions also contain a free-radical photoinitiator to induce photopolymerization.
  • the free-radical photoinitiator can be selected from those compounds disclosed in "Mechanisms of the Photode ⁇ omposition of Initiators", George F. Vesley, Journal of Radiation Curing 1 ". January, 1986, incorporated herein by reference. They are selected from acetophenones and ketals, benzophenones, aryl glyoxalates, acylphosphine oxides, sulfonium and iodonium salts, diazonium salts and peroxides.
  • Preferred additional free-radical photoinitiators are those that have an absorption maximum in the 300 to 400 nm region of the electromagnetic spectrum.
  • Ar is C 6 -C u aryl which is unsubstituted or substituted by halogen, CN, OH, C ⁇ C ⁇ alkyl , -alkoxy, -phenoxy, -thioalkyl, -SCH 2 CH 2 OH, -thiophenyl , -S0 2 alkyl , -S0 2 phenyl , -COOalkyl, -S0 2 NH 2 , -S0 2 N-Halkyl , -S0 2 N ( alkyl) 2 , -NHalkyl, -N(alkyl) 2 , -NHCOalkyl or -NHCO-phenyl, or represents thienyl, pyridyl, furyl, indanyl or tetrahydronaphthyl, and alkyl represents a lower alkyl radical of 1 to 4 carbon atoms; R 4 is OH, C ⁇ C g alkyl which
  • Preferred compounds have R 4 and j as -OR., R 7 as C,- ⁇ alkyl and R 6 phenyl; or R 4 and R 5 combining to form C 2 -C 8 alkylene, preferably cyclohexylene, and R 6 as -OH or phenyl.
  • Typical alkyl groups include methyl, ethyl, propyl, isobutyl, t-butyl, pentyl, neopentyl, hexyl, heptyl, octyl, 2-ethylhexyl; aryl groups include phenyl, naphthyl, anthracyl, tolyl, xylyl, methoxyphenyl, halophenyl, hydroxyphenyl, nitrophenyl and carboethoxyphenyl; and cycloalkyl groups include cyclopentyl, methylcyclopentyl, dimethylcyclopentyl, ethylcyclopentyl, cyclohexyl, methylcyclohexyl, cycloheptyl, bicycloheptyl, cyclooctyl, and bicyclooctyl.
  • A is an organic cation selected from those described in U.S. Patent Nos. 3,708,296, 3,729,313, 3,741,769, 3,794,576, 3,808,006, 4,026,705, 4,058,401, 4,069,055, 4,101,513, 4,216,288, 4,394,403, and
  • A is preferably selected from diazonium, iodonium, and sulfonium cations, more preferably diphenyliodonium, triphenylsulfonium and phenylthiophenyl diphenylsulfonium
  • X is an anion where X is the same as defined for formulas I and II.
  • the anions are CF 3 S0 3 ' , BF 4 * , PF 6 " , SbF 6 “ , SbF 5 OH “ , AsF 6 " , and SbCl 6 ".
  • Photoinitiators which are useful for partially polymerizing alkyl acrylate monomer without crosslinking, to prepare the partially polymerized syrup, discussed infra, include the benzoin ethers (such as benzoin methyl ether or benzoin isopropyl ether) , substituted benzoin ethers (such as anisoin methyl ether) , substituted acetophenones (such as 2,2-diethoxyacetophenone and 2,2-dimethoxy-2-phenylacetophenone) , substituted alpha-ketols (such as 2-methyl-2-hydroxypropiophenone) , aromatic sulfonyl chlorides (such as
  • Photoinitiators may be used for syrup-making in amounts which, when dissolved, provide about 0.001 to 0.5 percent by weight of the alkyl acrylate monomer, preferably at least 0.01 percent.
  • the composition should be crosslinked.
  • Useful crosslinking agents include multiacrylates such as 1,6- hexanediol diacrylate, as well as those disclosed in U.S. Patent No. 4,379,201, (Heilmann et al.), incorporated herein by reference.
  • Other suitable crosslinking agents include hydrogen abstracting carbonyls such as anthraquinone and benzophenone and their derivatives, as disclosed in U.S. 4,181,752, (Martens). When crosslinking agents are used, they typically comprise from about 0.01% to about 1% of the total monomer weight.
  • Useful pressuzie-sensitive adhesives in compositions of the invention include those which only become tacky at elevated temperatures, e.g., acrylic copolymers having average carbon-to-carbon chains of less than 4 carbon atoms, or those comprising a polymer wherein methacrylic acid esters are substituted for all or portions of the acrylic acid esters.
  • the pressure-sensitive adhesive may comprise microbubbles.
  • Useful microbubbles include glass microbubbles, as taught in U.S. Patent No. 4,223,067 (Levens) , and polymeric microbubbles as taught in U.S. Patent Nos.3,615,972, (Nakayama) , 4,075,138 (Beck), and 4,855,170, (Darvell) , all of which are incorporated herein by reference. Polymeric microbubbles are available from Kema Nord under the trade name ExpancelTM.
  • the microbubbles In expanded form, the microbubbles have a specific density of approximately 0.02-0.36 g/cc. It is possible to include unexpanded microbubbles in the pressure- sensitive adhesive composition and subsequently heat to expand, but it is preferred to mix the expanded microbubbles in the adhesive in order to assure that all microbubbles are surrounded by at least a thin layer of adhesive.
  • microbubbles may be clear or colored as disclosed in U.S. Patent No. 4,612,242, (Vesley et al.) 4,618,525, (Chamberlain et al.) 4,666,771, (Vesley et al.), and 4,950,530 (Vesley et al.).
  • microbubbles When used, microbubbles should have an average diameter of from about 10 to about 200 micrometers, and comprise from about 5 to about 65 volume percent of the pressure-sensitive adhesive layer. When glass microbubbles are used, the thickness of the foam-like layer should exceed three times the average diameter of -li ⁇ the microbubbles, and tvfice the diameter of substantially every microbubble.
  • one very useful filler is hydrophobic silica as defined in U.S. Pat. Nos. 4,710,536, and 4,749,590, (Klingen et al.), both of which are incorporated herein by reference.
  • one or more layers of the pressure-sensitive adhesive tape contain from about 2 to about 15 parts of a hydrophobic silica having a surface area of from 50 to about 400 m 2 /g «
  • the pressure- sensitive adhesive comprises an acrylic cellular pressure-sensitive adhesive membrane layer (CPSAM) .
  • the cellular pressure-sensitive adhesive membrane has a cellular structure providing at least 10% voids, such percentage being on a volume basis.
  • a surfactant in the composition of a CPSAM.
  • Preferred surfactants are those such as fluorochemicals known to be useful for foaming organic materials with low surface tension. By doing so, tapes with membranes of good uniformity will be produced wherein the cells have an average diameter within the range of 0.05 to 0.3 mm. Typically, 90% of the cells of the adhesive membrane vary in size no more than 2:1.
  • CPSAM adhesive layers may range from about 2.0 mm in thickness to about 10 mm.
  • a cellular pressure-sensitive adhesive membrane is made by the steps of a) frothing a composition which is polymerizable to a pressure-sensitive adhesive state, b) coating the froth onto a backing, and c) polymerizing the coated froth in situ to a pressure-sensitive adhesive state to provide a pressure- sensitive adhesive membranae having a cellular structure. Frothing can be conveniently accomplished by whipping a gas into the polymerizable mixture.
  • the pressure-sensitive adhesive compositions useful in tapes of the invention are preferably prepared by premixing together the photopolymerizable monomers and the photoinitiator.
  • This premix is then partially polymerized to a viscosity in the range of from about 500 centipoise (cps) to about 50,000 cps to achieve a coatable syrup.
  • the monomers can be mixed with a thixotropic agent such as a hydrophilic fumed silica to achieve a coatable syrup composition.
  • composition is then coated onto the backing, or onto a flexible carrier web and polymerized in an inert, i.e., oxygen free atmosphere, e.g., a nitrogen atmosphere.
  • an inert atmosphere i.e., oxygen free atmosphere, e.g., a nitrogen atmosphere.
  • a sufficiently inert atmosphere can be achieved by covering a layer of the photoactive coating with a plastic film which is substantially transparent to ultraviolet radiation, and irradiating through that film in air using fluorescent-type ultraviolet lamps which generally give a total radiation dose of about 500 millijoules/cm 2 .
  • the coating of the tapes may be accomplished using any conventional means such as roller coating, dip coating or extrusion coating.
  • Pressure-sensitive adhesive tapes of the invention may contain more than one layer.
  • Such multilayered tapes may have a thin layer of a differing acrylic pressure-sensitive adhesive laminated to a thicker, e.g., foamlike core adhesive layer.
  • the "core" or inner layer may be a photopolymerizable composition which is not pressure- sensitive.
  • multilayer coating As described in U.S. Patent Nos. 4,818,610, and 4,895,738, (Zimmerman et al.) and U.S. Patent No. 4,894,259, (Kuller) , all of which are incorporated herein by reference.
  • multilayer coating a plurality of copolymerizable coatable compositions are prepared, each composition containing at least one photopolymerizable monomer, one of the coatable compositions being the acrylic pressure-sensitive adhesive layer.
  • the compositions are then coated to provide a plurality of superimposed layers with contiguous layers defining an interface therebetween, with the pressure-sensitive adhesive layer being coated as an outer layer.
  • Useful backings for the pressure-sensitive adhesive tapes of the invention are highly extensible backings.
  • the backings may be recoverable or substantially nonrecoverable.
  • materials suitable for the backing of the tape of this invention include polyolefins, such as polyethylene, including high density polyethylene, low density polyethylene, linear low density polyethylene, linear ultra low density polyethylene, polypropylene, and polybutylenes; vinyl copolymers, such as polyvinyl chlorides, both plasticized and unplasticized, and polyvinyl acetates; olefinic copolymers, such as ethylene/methacrylate copolymers, ethylene/vinyl acetate copolymers, acrylonitrile- butadiene-styrene copolymers, and copolymers; acrylic polymers and copolymers; and combinations thereof.
  • Mixtures of blends of any plastic or plastic and elastomeric materials such as polypropylene/polyethylene, polyurethane/polyolefin, polyurethane/polycarbonate, polyurethane/polyester can also be used.
  • Backings can be in the form of single or multilayer films, nonwoven films, porous films, foam-like films, and combinations thereof. Backings can also be prepared from filled materials, such as, e.g., calcium carbonate filled polyolefins.
  • recoverable backings are desirable, above 75% recovery is preferred.
  • Preferred recoverable materials include styrene containing A-B-A block copolymers and blends of vinyl acetate and elastomers, with the most preferred material being a blend of ethylene copolymers and olefinic elastomers, available from Consolidated Thermoplastics Co. as "XQ 1099" and XQ 1901".
  • nonrecoverable backings are desirable, preferred materials are polyethylene and polypropylene, with low density and ultra low density polyethylenes being most preferred.
  • Additional useful backings are thermoplastic blends of polypropylene and EPDM styrene copolymers and copolymers, available from CT thermoplastics as XEL 12, XEL 36 and XEL 40, respectively.
  • Backings can be made by any known method of film forming, such as, extrusion, coextrusion, solvent casting, foaming, nonwoven technology, and the like.
  • the backing can be any thickness so long as it possess sufficient integrity to be processable and handleable, with thicknesses preferably ranging from about 10 ⁇ to about 250 ⁇ . Backings having thicknesses higher than about 250 ⁇ tend to require high than desired stretching force for removal.
  • Test Methods 90' Peel Adhesion The adhesive layer to be tested is transferred to 0.05 mm thick, chemically primed, biaxially oriented poly(ethylene terephthalate) film which then is siit to a width of 1.27 cm.
  • the resulting tape is self-adhered to a smooth stainless steel plate under the weight of a 2.04 kg hard-rubber-covered steel roller, two passes in each direction.
  • the peel adhesion is measured by moving the free end of the tape away from the steel plate at 90* at a rate of 0.5 cm per second using an InstronTM tensile tester.
  • Static Shear This test employs two 25.4 mm wide stainless steel straps as follows: Type 304-2BA, 0.38 mm in thickness, surface roughness of 0.05 micrometer arithmatic average deviation from the main line. The strips are washed first with heptane, and a second wash with methyl ethyl ketone if heavy oils are present. A strip of 25.4 mm wide double-coated pressure-sensitive adhesive tape, carried on a low-adhesion liner, is adhered to one end of one of the straps and trimmed to a length of 25.4 mm. The liner is then removed, and the second strap is adhered to the exposed adhesive surface.
  • the test assembly is placed in a horizontal position and 1 kg weight rests on the assembly for 15 minutes at room temperature to ensure bond between the surfaces. After dwelling at room temperature for 24 hours, the assembly is hung from one strap in an air-circulating oven which has been preheated to the indicated temperature (typically 70*), and af ⁇ er 15 minutes, a weight is hung from the free end of the tape, with the top strap vertical. The time at which the weight falls is the "Static Shear Value". If no failure occurs, the test is discontinued at 10,000 minutes. Only cohesive failures are reported.
  • Examples 1-12C The following double-coated pressure-sensitive adhesive tapes were made to a thickness of 0.8 mm. The adhesive on both sides of each tape is identical.
  • Coatable syrups were first made for each pressure-sensitive adhesive layer.
  • the constructions were obtained by first coating the syrup onto the bottom liner, introducing the elastic backing, in tapes of the invention, and subsequently coating the second layer of syrup between the backing and the top liner.
  • Tapes 1-2 and 3C had an acrylic pressure- sensitive adhesive layer with a 90/10 ratio of isooctyl acrylate (IOA)/ acrylic acid (AA) having 0.2 part photoinitiator and 0.12 part 1,6-hexanediol diacrylate (HDDA) .
  • Tapes 1 and 2 were coated onto differing elastic film backings, "XQ 1900" and "XQ 1901” respectively, available from CT Plastics, Chippewa Falls, Wi.
  • Tape 3C had no elastic backing.
  • Tapes 4-5 and 6C had an acrylic pressure-sensitive adhesive layer with a 91/9 IOA/AA ratio having 8 pph hollow glass bubbles, available from Minnesota Mining and Manufacturing Company (3M) , 4 parts hydrophobic fumed silica, available as Aerosil 1 " R972, 0.13 part HDDA and 0.1 part Irgacure 1* 651, a photoinitiator available from Ciba-Geigy. Tapes 4 and 5 were coated onto differing elastic film backings, "XQ 1900” and "XQ 1901” respectively, available from CT -17-
  • Tape 6C had no elastic backing.
  • Backing A was 150 ⁇ in thickness, and an elongation at break of 853%.
  • Backing B was also 150 ⁇ in thickness.
  • Tapes 7-8 and 9C had an acrylic pressure-sensitive adhesive layer with a 91/9 IOA/AA ratio syrup with 2.2 pph polymeric microspheres, available as ExpancelTM 551 De, 4 parts AerosilTM R972, and 0.18 part Irgacure 1 " 651.
  • Tapes 7 and 8 were coated onto differing elastic film backings, "XQ 1900" and "XQ 1901" respectively, available from CT Plastics, Chippewa Falls, Wi.
  • Tape 9C had no elastic backing.
  • Tapes 10-11 and 12C had an acrylic pressure-sensitive adhesive layer with a 91/9 IOA/AA ratio syrup with 2.2 pph polymeric microspheres, available as
  • the mixture was delivered under 204 kPa pressure to the nip of a roll coater between a pair of sheets of transparent, biaxially-oriented poly(ethylene terephthalate) , the faces of which had low adhesion coatings.
  • the composite emerging from the roll coater was irradiated with a back of fluorescent black light bulbs, 90% of the emissions of which were between 300 and 400 nm, with a maximum at 351 nm with a total irradiation of 500 Mj, as measured by a Dynachem Radiometer 1 ".
  • Tapes 10 and 11 had XQ 1900" and "XQ 1901" respectively, film backings available from CT Plastics, Chippewa Falls, Wi., introduced as described above.
  • Tape 12C used no elastic backing. '
  • the tapes were tested for 90° Peel adhesion to stainless steel and to paper, and the elastic backings were tested for mechanical properties. The test results are shown in Tables 1 and 2.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Ruban autoadhésif décollable comprenant un support hautement extensible, portant sur au moins une de ses surfaces principales une couche d'auto-adhésif acrylique photopolymérisée, ledit ruban pouvant être solidement collé sur un substrat puis retiré de celui-ci uniquement lorsque l'angle d'étirage n'est pas supérieur à environ 35 ° par rapport à la surface du substrat.
PCT/US1991/007779 1990-12-20 1991-10-21 Ruban adhesif decollable WO1992011332A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP3518488A JPH06503848A (ja) 1990-12-20 1991-10-21 除去可能な接着テープ
AU89220/91A AU653561B2 (en) 1990-12-20 1991-10-21 Removable adhesive tape
BR9107272A BR9107272A (pt) 1990-12-20 1991-10-22 Fita adesiva removivel sensivel a pressao

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63211690A 1990-12-20 1990-12-20
US632,116 1990-12-20

Publications (1)

Publication Number Publication Date
WO1992011332A1 true WO1992011332A1 (fr) 1992-07-09

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1991/007779 WO1992011332A1 (fr) 1990-12-20 1991-10-21 Ruban adhesif decollable

Country Status (5)

Country Link
EP (1) EP0563057A1 (fr)
JP (1) JPH06503848A (fr)
AU (1) AU653561B2 (fr)
CA (1) CA2096936A1 (fr)
WO (1) WO1992011332A1 (fr)

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0702069A3 (fr) * 1994-09-08 1998-02-11 Beiersdorf Aktiengesellschaft Ruban d'adhésif en feuille
DE19631964A1 (de) * 1996-08-08 1998-02-12 Beiersdorf Ag Ablängvorrichtung
US5733652A (en) * 1995-02-10 1998-03-31 Minnesota Mining And Manufacturing Company Banding system, banding tape and methods of using the same
EP0861622A2 (fr) 1997-03-01 1998-09-02 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0896805A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0896806A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0896807A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
US5897949A (en) * 1996-11-30 1999-04-27 Beiersdorf Ag Adhesive tape
EP0916792A2 (fr) 1997-11-15 1999-05-19 Beiersdorf Aktiengesellschaft Dispositif de fermeture pour portes et tiroirs
US5908695A (en) * 1989-10-26 1999-06-01 Minnesota Mining And Manufacturing Company Multiple releasable contact responsive fastener
DE19824430A1 (de) * 1998-05-30 1999-12-02 Beiersdorf Ag Substrat mit Verlängerung
US6004665A (en) * 1996-11-30 1999-12-21 Beiersdorf Ag Adhesive tape
EP1103489A1 (fr) 1999-11-26 2001-05-30 Beiersdorf Aktiengesellschaft Emballage pour films adhésifs
EP1170344A2 (fr) 2000-07-08 2002-01-09 Tesa AG Pièce en matière plastique
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WO2020193461A1 (fr) 2019-03-28 2020-10-01 Tesa Se Bande adhésive de contact détachable
WO2020234705A1 (fr) 2019-05-23 2020-11-26 3M Innovative Properties Company Bandes détachables par étirement
WO2021171258A1 (fr) 2020-02-28 2021-09-02 3M Innovative Properties Company Dispositif électronique à élément amovible
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JP5235294B2 (ja) * 2006-11-10 2013-07-10 日東電工株式会社 加熱発泡型再剥離性アクリル系粘着テープ又はシート
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CN1094143C (zh) * 1994-09-08 2002-11-13 蒂萨股份公司 胶粘薄膜带
EP0702069A3 (fr) * 1994-09-08 1998-02-11 Beiersdorf Aktiengesellschaft Ruban d'adhésif en feuille
US5733652A (en) * 1995-02-10 1998-03-31 Minnesota Mining And Manufacturing Company Banding system, banding tape and methods of using the same
US6841241B2 (en) 1995-08-29 2005-01-11 Tesa Ag Repeated use of an adhesive-film laminate
US6402875B1 (en) 1995-08-29 2002-06-11 Testa Ag Repeated use of an adhesive-film laminate
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US7264870B2 (en) 1996-11-30 2007-09-04 Tesa Ag Adhesive tape
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US6372335B1 (en) * 1996-11-30 2002-04-16 Beiersdorf Ag Adhesive tape
US6004665A (en) * 1996-11-30 1999-12-21 Beiersdorf Ag Adhesive tape
EP0861622A2 (fr) 1997-03-01 1998-09-02 Beiersdorf Aktiengesellschaft Dispositif de fixation
US5967474A (en) * 1997-03-01 1999-10-19 Beiersdorf Ag Holding device
US7101615B2 (en) * 1997-05-14 2006-09-05 Tesa Ag Double-sided adhesive tape and its use
US6131864A (en) * 1997-08-14 2000-10-17 Beiersdorf Ag Holding device
EP0896807A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0896806A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0896805A2 (fr) 1997-08-14 1999-02-17 Beiersdorf Aktiengesellschaft Dispositif de fixation
EP0916792A2 (fr) 1997-11-15 1999-05-19 Beiersdorf Aktiengesellschaft Dispositif de fermeture pour portes et tiroirs
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EP1170344A2 (fr) 2000-07-08 2002-01-09 Tesa AG Pièce en matière plastique
US6984428B2 (en) 2000-11-10 2006-01-10 Tesa Aktiengesellschaft Pressure-sensitive adhesive mass and the use thereof
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WO2003060276A1 (fr) 2002-01-21 2003-07-24 Tesa Ag Grille anti-pollens ou insectes destinee a etre appliquee contre des ouvertures de batiments telles que des fenetres, portes ou ouvertures analogues
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WO2020016447A1 (fr) 2018-07-20 2020-01-23 Festool Gmbh Élément de retenue pour un dispositif de support et/ou de guidage
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US20230050336A1 (en) * 2019-12-13 2023-02-16 Toyo Ink Sc Holdings Co., Ltd. Block copolymer, resin composition, stretch conductor, electronic device, and pressure-sensitive adhesive film
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AU8922091A (en) 1992-07-22
CA2096936A1 (fr) 1992-06-21
AU653561B2 (en) 1994-10-06
JPH06503848A (ja) 1994-04-28
EP0563057A1 (fr) 1993-10-06

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