WO2013055122A2 - 자동차용 점착테이프 - Google Patents
자동차용 점착테이프 Download PDFInfo
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- WO2013055122A2 WO2013055122A2 PCT/KR2012/008260 KR2012008260W WO2013055122A2 WO 2013055122 A2 WO2013055122 A2 WO 2013055122A2 KR 2012008260 W KR2012008260 W KR 2012008260W WO 2013055122 A2 WO2013055122 A2 WO 2013055122A2
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- adhesive layer
- rubber
- pressure
- sensitive adhesive
- weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C09J121/00—Adhesives based on unspecified rubbers
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- 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
- C09J125/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Adhesives based on derivatives of such polymers
- C09J125/02—Homopolymers or copolymers of hydrocarbons
- C09J125/04—Homopolymers or copolymers of styrene
- C09J125/08—Copolymers of styrene
- C09J125/10—Copolymers of styrene with conjugated dienes
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- 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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- 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
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
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- 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
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- 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
- C09J7/26—Porous or cellular plastics
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- 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]
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- 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
- C09J7/383—Natural or synthetic rubber
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- 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
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
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- 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
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/416—Additional features of adhesives in the form of films or foils characterized by the presence of essential components use of irradiation
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- 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
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/20—Presence of organic materials
- C09J2400/24—Presence of a foam
- C09J2400/243—Presence of a foam in the substrate
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- 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
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- 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
- C09J2453/00—Presence of block copolymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249982—With component specified as adhesive or bonding agent
- Y10T428/249983—As outermost component
Definitions
- the present invention includes an acrylic foam layer and a rubber adhesive layer formed on both sides of the acrylic foam layer, the rubber adhesive layer relates to a pressure-sensitive adhesive tape, characterized in that the gel content is 40% or more.
- Korean Patent Publication No. 2007-0041896 discloses an ultraviolet curable adhesive composition and an adhesive tape.
- the UV curing method has advantages such as instant curing, low temperature curing, pollution / stable, and quality uniformity.However, since it is high in the market participation and raw material price of domestic companies, and it is mixed with polymerization initiator or sensitizer, polymerization There was a possibility of deterioration and deterioration, and a new curing method was required.
- Korean Patent Publication No. 2007-0004837 provides a pressure-sensitive adhesive tape having a core layer containing a rubber-based pressure-sensitive adhesive.
- acrylic adhesive tapes have been applied to automotive adhesive tapes because they have to withstand exposure environments such as UV and rainwater for a long time, as well as external physical shocks and vibrations.
- the invention of the acrylic foam tape containing is urgent situation.
- the present invention to achieve the above object is an acrylic foam layer; And including a rubber-based adhesive layer formed on both sides of the acrylic foam layer, the rubber-based adhesive layer provides a pressure-sensitive adhesive tape, characterized in that the gel content of 40% or more.
- the rubber-based adhesive layer forming step comprises the steps of preparing a styrene block copolymer; Adding a tackifier and a plasticizer to the styrene block copolymer to form a rubber adhesive layer; And it provides a pressure-sensitive adhesive layer manufacturing method comprising the step of making the gel content of the rubber-based adhesive layer 40% or more.
- the pressure-sensitive adhesive tape including the rubber-based adhesive layer of the present invention is excellent in impact and absorption, and in particular, has excellent performance in adhesion for automobiles, and has excellent adhesive performance even on a substrate having low surface energy.
- the manufacturing method of the pressure-sensitive adhesive tape of the present invention includes the step of irradiating the electron beam to cure, thereby shortening the curing time and having a high degree of cure, so its utilization is very high in terms of environment and productivity.
- FIG. 1 is a cross-sectional view showing the structure of a pressure-sensitive adhesive tape according to an embodiment of the present invention.
- the present invention provides a pressure-sensitive adhesive tape comprising an acrylic foam layer and a rubber adhesive layer formed on both sides of the acrylic foam layer.
- the acrylic foam layer comprises an acrylic resin.
- the acrylic resin which can be used by this invention is not specifically limited, It can contain the (meth) acrylic acid ester monomer and acrylic acid which have a C1-C12 alkyl group.
- Tg glass transition temperature
- (meth) having an alkyl group having 1 to 12 carbon atoms Preference is given to using acrylic ester monomers.
- the weight ratio of the (meth) acrylic acid ester monomer and the acrylic acid is selected from a range capable of achieving the desired effect and is not particularly limited, but the (meth) acrylic acid ester monomer is 85 to 95% by weight and the acrylic acid is It is preferable to use it at 5-15 weight%.
- the acrylic acid is less than 5% by weight, the adhesive force is lowered, and when the acrylic acid is more than 15% by weight, the cohesive force is lowered.
- the type of the (meth) acrylic acid ester monomer is not particularly limited.
- examples of such monomers include alkyl (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, and n-propyl (meth).
- Acrylate isopropyl (meth) acrylate, n-butyl (meth) acrylate, t-butyl (meth) acrylate, sec-butyl (meth) acrylate, pentyl (meth) acrylate, 2-ethylhexyl ( Meth) acrylate, 2-ethylbutyl (meth) acrylate, n-octyl (meth) acrylate, isooctyl (meth) acrylate, isononyl (meth) acrylate, lauryl (meth) acrylate and tetradecyl (Meth) acrylate can be mentioned, In this invention, 1 type, or 2 or more types of these can be used.
- the acrylic acid copolymerizable with the (meth) acrylic acid ester monomer may be a polar monomer.
- the said acrylic acid is not specifically limited, either, A carboxyl group-containing monomer and / or a nitrogen-containing monomer are especially preferable.
- the carboxyl group-containing monomer may include at least one selected from the group consisting of (meth) acrylic acid, maleic acid and fumaric acid, and examples of the nitrogen-containing monomer may include acrylamide, N-vinylpyrrolidone and N-vinyl caprolactam. One or more selected from the group consisting of.
- the acrylic foam layer of the present invention is characterized by further comprising a photoinitiator and a crosslinking agent in a composition comprising a (meth) acrylic acid ester monomer having an alkyl group having 1 to 12 carbon atoms and acrylic acid.
- the photoinitiator may react by irradiation with ultraviolet rays in the process of forming the acrylic foam layer to initiate a curing reaction of the composition.
- the photoinitiator in the above may be used that is commonly used in this field, which is not particularly limited.
- photoinitiator examples include benzoin methyl ether, 2,4,6-trimethylbenzoyl diphenylphosphine oxide, bis (2,4,6-trimethylbenzoyl) phenylphosphine oxide, ⁇ , ⁇ -methoxy- ⁇ -hydro From the group consisting of roxyacetophenone, 2-benzoyl-2- (dimethylamino) -1- [4- (4-morphonyl) phenyl] -1-butanone and 2,2-dimethoxy-2-phenylacetophenone One or more selected.
- the photoinitiator is preferably added in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the composition.
- the crosslinking agent may adjust the adhesive physical properties in view of improving cohesion.
- the kind of crosslinking agent which can be used by this invention is not specifically limited, It is preferable that it is a component which can participate in reaction by irradiation, such as an ultraviolet-ray.
- crosslinking agent examples include polyfunctional such as 1,6-hexanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol triacrylate, 1,2-ethylene glycol diacrylate and 1,12-dodecanediol acrylate.
- the crosslinking agent is preferably added in an amount of 0.1 to 2 parts by weight based on 100 parts by weight of the composition. When less than 0.1 weight part of crosslinking agent is added, there exists a possibility that adhesive force may fall, and when more than 2 weight part is added, cohesion force may fall.
- additives that may be added in addition to the photoinitiator and the crosslinking agent include a porous filler, a coupling agent, an antistatic agent, a surfactant, a tackifier and a processing oil, and the like, and such additives are conventionally used in the art. It can be suitably added in the range which does not impair the purpose of
- the present invention provides a pressure-sensitive adhesive tape, characterized in that the gel content of the rubber adhesive layer is 40% or more.
- the gel content is preferably 40 to 80% in terms of peel strength and high temperature.
- the heat resistance that can be tolerated without being deformed or deteriorated by high heat is lowered and the high temperature holding power is lowered.
- the gel content falls below 40%, a loose crosslinked structure of the rubber-based adhesive layer is formed, whereby the deviation is large and easily deformed when an external force or stress is applied from the outside, thereby causing high or high temperature and high humidity. Under very poor durability.
- the gel content exceeds 80%, the adhesive strength with the substrate to which the rubber-based adhesive layer adheres may decrease.
- Gel content expressed in weight percent, refers to the percentage of rubber-based adhesive that is insoluble in the solvent after the tackifying reaction. Generally, the gel content is high for polymers that are crosslinked to a very high degree, and as the degree of crosslinking increases, the gel content increases.
- the rubber adhesive layer is characterized in that the electron beam is cured by irradiation. Since radicals are generated, polymerized and solidified by irradiating the electron beam, polymerization initiators and the like are unnecessary and there is little concern about deterioration. In addition, compared to UV curing, the energy use efficiency is high, and the curing speed is high, so that a large productivity can be expected.
- the electron beam is characterized in that it has an irradiation amount of 300 ⁇ 500kGy.
- the electron beam irradiation amount is less than 300kGy, sufficient energy for curing is not supplied, so that the gel may fall to less than 40%, resulting in insufficient cohesion. The energy beam may damage the product.
- the initial adhesive force may be raised to a certain level, thereby improving compatibility with a polar acrylic foam layer.
- the gel content of the rubber adhesive layer at 40% or more, it can have an excellent adhesive strength compared to the acrylic pressure-sensitive adhesive layer.
- it is also possible to bond with a material such as plastics colored metal.
- the rubber adhesive layer of the present invention includes a styrene block copolymer, and may further include a tackifier and a plasticizer.
- the styrene block copolymer is characterized in that the styrene-isoprene-styrene (SIS) block polymer.
- SIS styrene-isoprene-styrene
- the SIS block copolymer is a kind of rubber adhesive and belongs to an A-B-A type polymer, and is a styrene-based thermoplastic elastomer having a molecular structure model in which A of the end block is made of polystyrene and B of the rubber intermediate block is made of polyisoprene.
- a solution viscosity (MPa * s [cps], 25 degreeC) should just be about 100-3000, and it is the whole composition of a rubber adhesive layer.
- the content of the SIS block copolymer is preferably 10 to 30% by weight. If the content of the SIS block copolymer is less than 10% by weight, the cohesive force is insufficient, whereas if the content of the SIS block copolymer is more than 30% by weight, the adhesion is insufficient, which is not preferable.
- the styrene content of the styrene block copolymer is most preferably 15 to 30% by weight.
- the content of styrene may affect the physical properties of the entire rubber, and as the amount of styrene increases, the rubber may increase thermoplasticity.
- the styrene content of the present invention is less than 15% by weight, the cohesive force may be insufficient. If the styrene content is more than 30% by weight, the adhesiveness may be insufficient. It is especially preferable when the styrene content is 15 to 25% by weight.
- substituted saturated hydrocarbon resin synthetic petroleum resin
- rosin ester derivative terpene resin
- phenol resin phenol resin
- a substituted saturated hydrocarbon resin is not specifically limited, What is necessary is just to contain 1 type (s) or 2 or more types in the above in this invention.
- content of the said tackifier is not specifically limited, It is preferable that it is 10-150 weight part with respect to 100 weight part of styrene block copolymers of the said rubber adhesive layer.
- content of a tackifier is less than 10 weight part, adhesive force becomes inadequate, and when content of a tackifier exceeds 150 weight part, adhesive force becomes it strong too much and can provide a foreign material to a base material when peeling.
- plasticizer is not specifically limited, For example, higher alcohols, such as liquid paraffin, hardened oil, hardened castor oil, and octyl dodecanol, squalane, squalene, castor oil, a liquid rubber (polybutene), isopropyl acid myrist acid Fatty acid ester, such as these, etc. are mentioned. In the present invention, any one or two or more of these may be contained.
- content of the said plasticizer is 1-10 weight part with respect to 100 weight part of styrene block copolymers of the said rubber adhesive layer. If the content of the plasticizer is less than 1 part by weight, the pressure-sensitive adhesive layer is excessively cured, so that the adhesive force is insufficient. On the other hand, when content of a plasticizer exceeds 10 weight part, since an adhesive layer softens too much, stickiness will arise or remain easily.
- An outer skin layer may be further included in the rubber adhesive layer.
- the outer skin layer may use various plastic films, paper, nonwoven fabric, glass, or metal, and it is preferable to use a plastic film such as polyethylene terephthalate (PET), but is not limited thereto.
- PET polyethylene terephthalate
- the present invention comprises the steps of preparing an acrylic foam layer; Forming a rubber adhesive layer on one or both surfaces of the acrylic foam layer; Including,
- the rubber-based adhesive layer forming step comprises the steps of preparing a styrene block copolymer; Adding a tackifier and a plasticizer to the styrene block copolymer to form a rubber adhesive layer; And it provides a pressure-sensitive adhesive layer manufacturing method comprising the step of making the gel content of the rubber-based adhesive layer 40% or more.
- the preparing of the acrylic foam layer may include preparing a composition by thermally polymerizing the (meth) acrylic acid ester monomer and acrylic acid; Preparing a mixture by adding a photoinitiator and a crosslinking agent to the composition; Irradiating ultraviolet light to the mixture to photopolymerize; It may include the step of producing an acrylic foam layer by applying heat to the photopolymer.
- the rubber adhesive layer forming step is to prepare a styrene block copolymer; Adding a tackifier and a plasticizer to the styrene block copolymer to form a rubber adhesive layer; And it may include the step of making the gel content of the rubber-based adhesive layer 40% or more.
- the gel content of the rubber adhesive layer may be 40% or more, wherein the rubber adhesive layer may be cured by irradiating an electron beam.
- the electron beam curing is high energy, and thus can be applied to a thick adhesive layer due to its high permeability in the depth of the adhesive, and the initial adhesive force is raised to a certain level by using the rubber-based adhesive layer with the gel content of 40% or more, and a polar acrylic foam layer.
- the compatibility with can be improved (deleted).
- by maintaining the gel content of the rubber adhesive layer at 40% or more it can have an excellent adhesive strength compared to the acrylic adhesive.
- by having a high peel strength and high temperature holding force it is also possible to bond with a material such as plastics colored metal.
- the electron beam irradiation amount irradiated to the said rubber adhesive layer can be 300-500 kGy.
- the electron beam irradiation amount is less than 300kGy, sufficient energy for curing is not supplied, so that the gel content may be less than 40% and cohesion may be insufficient.
- the electron beam irradiation amount exceeds 500kGy, the adhesiveness is high and the adhesiveness is high. In addition to being inadequate, there is a risk of damaging the product due to the strong energy beam.
- styrene block copolymer the tackifier, and the plasticizer which characterize the rubber adhesive layer are as described above.
- the solvent may be dried to prepare the composition before adding the tackifier and the plasticizer to the styrene block copolymer.
- Specific examples of the solvent include ethyl acetate, isopropanol, ethanol, hexane, heptane and toluene.
- the purpose of the solvent is to reduce the viscosity of the composition so that it can be easily poured from one vessel to another.
- the amount of solvent is also sufficient to reduce the viscosity to less than about 100 Pascal-seconds.
- compositions comprising more than 40% by weight solids may be high in viscosity and compositions comprising less than about 20% by weight solids may comprise more than sufficient amount of solvent to reduce the viscosity to an easily workable level. .
- the particular viscosity desired depends on how the composition is introduced into the extruder and the type of solvent removal system used.
- the pressure-sensitive adhesive tapes of the present invention are body side moldings on the outer surface of substrates such as automobiles, motorcycles, bicycles, ships (e.g. ships, yachts, boats and personal vessels), aircraft and other types of land, marine and aviation vehicles. It is particularly useful for joining parts such as, emblems, pin-striping and other objects.
- the pressure-sensitive adhesive tape is a component encountered in the use of a substrate comprising petroleum-based materials such as gasoline, lubricants, water-based materials such as detergents, windshield cleaning liquids, rain, saline and mixtures thereof which may be encountered by vehicles on a general basis. Resistant to them.
- the pressure-sensitive adhesive tape is resistant to physical force, which has an improved peel strength to prevent removal by physical forces such as impacts, jams, breaks or other forces that would otherwise cause the object to be removed from the substrate.
- a SIS-based linear block copolymer having a styrene content of 10% was prepared using a toluene solvent to prepare a composition having a solid content of 20%. After adding 150 parts of a tackifier to increase the adhesive properties to the composition with respect to 100 parts by weight of the SIS-based linear block copolymer and stirred for one hour, degassing at room temperature to coat the silicone release PET, 80 degrees oven 1 minute, dried for 2 minutes in an oven at 110 °C to prepare a rubber-based adhesive layer having a thickness of 50 ⁇ m and hardened by irradiating electron beam (EB) of various electron beam intensities (300, 400, 500 kGy).
- EB electron beam
- an acrylic foam tape was manufactured in the same manner as in Example 1 except that the styrene-based linear block copolymer had a styrene content of 20%.
- an acrylic foam tape was prepared in the same manner as in Example 1 except that the styrene-based linear block copolymer had a styrene content of 30%.
- an acrylic foam tape was manufactured in the same manner as in Example 1 except that the styrene-based linear block copolymer had a styrene content of 40%.
- Comparative Example was carried out in the same manner as in Example 1, except that the rubber-based adhesive layer was cured by the addition of a polymerization initiator using UV curing (UV).
- UV curing UV
- Example 1 and Comparative Example were cut to 60 mm * 60 mm, weighed, 50 ml of toluene solvent was placed in a PET container, and then stored at room temperature for two days. After two days of full sweling the pressure-sensitive adhesive to the prepared 200 mesh of 130mm * 130mm, and dried in an oven at 110 °C for 4 hours. The final gel content was determined by calculating the difference between the weight of the first and later adhesives.
- Example 1 including the electron beam curable rubber-based adhesive layer was confirmed that the gel content is 40% or more in the case of a comparative example including an ultraviolet curable rubber-based adhesive layer while the gel content is 40% or more.
- ABS plates and paint plates of 50 mm width and 120 mm length were washed with isopropyl solution and dried.
- a 0.02 mm thick and 30 mm wide PET film was laminated to form a label on either side of the rubber-based adhesive layer of Example 1 or Comparative Example.
- the prepared specimens were rolled five times in each direction with 2Kg rollers on ABS plate and paint plate, respectively, and left at room temperature for about 30 minutes. Thereafter, each sample was measured for 180 ° peel strength at a rate of 300 mm / min at room temperature, and the average value of five samples was recorded.
- the peeling strength was changed according to the UV irradiation amount and the EB irradiation amount.
- the highest adhesive strength was obtained at 300 kGy having the lowest gel content, and the acrylic foam was broken in peeling the ABS plate and the paint plate.
- the measured peel strength is not the adhesive force of the rubber-based adhesive, but the foam breaking force of only the acrylic foam, and thus, if the separation of the plate and the adhesive layer occurs without breaking the acrylic foam, higher peeling strength may be expected.
- the highest adhesive strength was obtained at 2100 mJ / cm 2 having the lowest gel content. This is due to the correlation between gel content, initial adhesion and peel strength. In general, however, the higher the gel content, the better the curing between the adhesive polymers and the higher the durability. However, since the gel becomes relatively hard, the peel strength decreases. On the contrary, when the gel content is low, the degree of curing is small, so that the peel strength of the adhesive polymer is relatively high, but the durability is low, and thus the low temperature holding power is shown in experiments such as high temperature holding.
- Paint plates and paint plates 25 mm wide and 60 mm long were washed with isopropyl solution and dried.
- the coated plates prepared on both surfaces of the rubber adhesive layer of Example 1 or Comparative Example are laminated.
- Roll the prepared specimen five times with a 5Kg roller.
- the prepared specimen was left at room temperature for about 30 minutes. Thereafter, each sample was weighed 500g at a high temperature of 90 ° C., and the holding force was measured at the time of separating the adhesive layer and the coating plate, and the average value of the three samples was recorded.
- the 90 ° high temperature holding power varies depending on the amount of UV irradiation or EB irradiation.
- the highest 90 ° hot hold was obtained at 300 kGy with the lowest gel content.
- ABS plates 50 mm wide and 120 mm long were washed with isopropyl solution and dried.
- a 0.02 mm thick and 30 mm wide PET film was laminated to form a label on either side of the rubber-based adhesive layer of Examples 1-4.
- the rubber adhesive layer was cured by EB irradiation of 300 kGy.
- the prepared specimens were rolled five times in each direction with 2Kg rollers each on an ABS plate and left at room temperature for about 30 minutes. Thereafter, each sample was measured for 180 ° peel strength at a rate of 300 mm / min at room temperature, and the average of five samples was recorded.
- Bar styrene content of the SIS block copolymer included in the rubber adhesive layer of Examples 1 to 4 is 10 to 40% by weight, it was confirmed that the peel strength is maintained above a certain level due to the styrene content.
- the styrene content of the SIS block copolymer has a relatively hard property in the polymer chain and can control the softness of the rubber adhesive layer. However, when attached to the substrate (wetting) may be insufficient.
- Examples 2 to 3 of the styrene block copolymer having a styrene content of 20 wt% and 30 wt% measured a peel strength of about 3700 N / m, and were able to maintain excellent peel strength.
- Examples 1 and 4 wherein the styrene block copolymer has a styrene content of 10% by weight and 40% by weight had a peel strength of about 3200 N / m, indicating that the adhesive strength was somewhat lower than that of Examples 2 and 3. .
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
실시예1 | |||
EB조사량(kGy) | 300 | 400 | 500 |
겔 함량(%) | 40.1 | 43.6 | 44.6 |
비교예 | |||
UV조사량(mJ/cm2) | 2100 | 4200 | 6200 |
겔 함량(%) | 19.3 | 22.5 | 30.3 |
실시예1 | |||
EB조사량(kGy) | 300 | 400 | 500 |
겔 함량(%) | 40.1 | 43.6 | 44.6 |
ABS판 박리강도(N/m) | 3664 | 2741 | 3032 |
도장판 박리강도(N/m) | 2884 | 2435 | 2998 |
비교예 | |||
UV조사량(mJ/cm2) | 2100 | 4200 | 6200 |
겔 함량(%) | 19.3 | 22.5 | 30.3 |
ABS판 박리강도(N/m) | 4883 | 4012 | 3872 |
도장판 박리강도(N/m) | 4127 | 3876 | 3345 |
실시예1 | |||
EB조사량(kGy) | 300 | 400 | 500 |
겔 함량(%) | 40.1 | 43.6 | 44.6 |
Creep(min) | 637.3 | 145.8 | 177.8 |
비교예 | |||
UV조사량(mJ/cm2) | 2100 | 4200 | 6200 |
겔 함량(%) | 19.3 | 22.5 | 30.3 |
Creep(min) | 21.1 | 121.2 | 244.5 |
SIS블록 공중합체의 스틸렌 함량(중량%) | ABS판 박리강도(N/m) | |
실시예1 | 10 | 3464 |
실시예2 | 20 | 3721 |
실시예3 | 30 | 3657 |
실시예4 | 40 | 3294 |
Claims (15)
- 아크릴 폼 층; 및상기 아크릴 폼 층의 양면에 형성된 고무계 접착제층을 포함하되,상기 고무계 접착제층은 겔 함량이 40% 이상인 것을 특징으로 하는 감압성 접착 테이프.
- 제 1항에 있어서,상기 고무계 접착제층은 전자빔이 조사되어 경화되는 것을 특징으로 하는 감압성 접착 테이프.
- 제 2항에 있어서,상기 전자빔은 300~500kGy의 조사량을 가지는 것을 특징으로 하는 감압성 접착 테이프.
- 제 1항에 있어서,상기 아크릴 폼 층은 탄소수 1~12의 알킬기를 가지는 (메타)아크릴산 에스테르계 단량체 및 아크릴산을 포함하는 것을 특징으로 하는 감압성 접착 테이프.
- 제 4항에 있어서,상기 (메타)아크릴산 에스테르계 단량체는 85~95중량% 및 상기 아크릴산은 5~15중량%인 것을 특징으로 하는 감압성 접착 테이프.
- 제 1항에 있어서,상기 아크릴 폼 층은 탄소수 1~12의 알킬기를 가지는 (메타)아크릴산 에스테르계 단량체 및 아크릴산을 포함하는 조성물의 100중량부에 대하여, 0.01~1 중량부의 광개시제 및 0.1~2 중량부의 가교제를 포함하는 것을 특징으로 하는 감압성 접착테이프.
- 제 1항에 있어서,상기 고무계 접착제층은 스틸렌 블록 공중합체를 포함하는 것을 특징으로 하는 갑압성 접착 테이프.
- 제 1항에 있어서,상기 고무계 접착제층은 점착 부여제 및 가소제를 추가로 포함하는 것을 특징으로 하는 감압성 접착 테이프.
- 제 7항에 있어서,상기 고무계 접착제층의 전체 조성물에 대하여,상기 스틸렌 블록 공중합체의 함유량은 10~30중량%인 것을 특징으로 하는 감압성 접착 테이프.
- 제 8항에 있어서,상기 고무계 접착제층의 스틸렌 블록 공중합체 100중량부에 대하여,상기 점착 부여제의 함유량은 10~150중량부이며, 상기 가소제의 함유량은 1~10중량부인 것을 특징으로 하는 감압성 접착 테이프.
- 제 7항에 있어서,상기 스틸렌 블록 공중합체가 스틸렌-이소프렌-스틸렌(SIS) 블록 중합체인 것을 특징으로 하는 감압성 접착 테이프.
- 제 7항에 있어서,상기 스틸렌 블록 공중합체의 스틸렌 함량이 15~30중량%인 것을 특징으로 하는 감압성 접착 테이프.
- 아크릴 폼 층을 제조하는 단계;상기 아크릴 폼 층의 일면 또는 양면에 고무계 접착제층을 형성시키는 단계; 를 포함하되,상기 고무계 접착제층 형성단계는스틸렌 블록 공중합체를 제조하는 단계;상기 스틸렌 블록 공중합체에 점착 부여제 및 가소제를 첨가하여 고무계 접착제층을 형성하는 단계; 및상기 고무계 접착제층의 겔 함량을 40%이상으로 하는 단계를 포함하는 것을 특징으로 하는 감압성 접착제층의 제조방법.
- 제 11항에 있어서,상기 고무계 접착제층의 겔 함량을 40%이상으로 하는 단계는상기 고무계 접착제층에 전자빔을 조사하여 경화하는 것을 특징으로 하는 감압성 접착제층의 제조방법.
- 제 12항에 있어서,상기 고무계 접착층에 조사하는 전자빔 조사량은 300~500kGy으로 하는 것을 특징으로 하는 감압성 접착제층의 제조방법.
Priority Applications (6)
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CN201280049901.9A CN103857764A (zh) | 2011-10-11 | 2012-10-11 | 汽车用胶粘带 |
EP12840746.7A EP2767567B1 (en) | 2011-10-11 | 2012-10-11 | Adhesive tape for car |
CA2851479A CA2851479C (en) | 2011-10-11 | 2012-10-11 | Adhesive tape for car |
JP2014535646A JP5960273B2 (ja) | 2011-10-11 | 2012-10-11 | 自動車用粘着テープ |
US14/347,055 US20140234612A1 (en) | 2011-10-11 | 2012-10-11 | Adhesive tape for car |
BR112014008458-0A BR112014008458B1 (pt) | 2011-10-11 | 2012-10-11 | Fita adesiva sensível à pressão, e, método de preparação de camada adesiva sensível à pressão |
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KR1020110103502A KR101393860B1 (ko) | 2011-10-11 | 2011-10-11 | 자동차용 점착테이프 |
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EP (1) | EP2767567B1 (ko) |
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CN (1) | CN103857764A (ko) |
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Also Published As
Publication number | Publication date |
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EP2767567A2 (en) | 2014-08-20 |
KR101393860B1 (ko) | 2014-05-14 |
JP2014534303A (ja) | 2014-12-18 |
BR112014008458A2 (pt) | 2017-04-11 |
JP5960273B2 (ja) | 2016-08-02 |
CA2851479C (en) | 2017-03-28 |
WO2013055122A3 (ko) | 2013-06-13 |
BR112014008458B1 (pt) | 2021-06-22 |
KR20130039064A (ko) | 2013-04-19 |
CA2851479A1 (en) | 2013-04-18 |
CN103857764A (zh) | 2014-06-11 |
EP2767567B1 (en) | 2020-01-01 |
US20140234612A1 (en) | 2014-08-21 |
EP2767567A4 (en) | 2015-03-18 |
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