WO2019049565A1 - 粘着テープ用基材、粘着テープ及びその製造方法 - Google Patents
粘着テープ用基材、粘着テープ及びその製造方法 Download PDFInfo
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- WO2019049565A1 WO2019049565A1 PCT/JP2018/028909 JP2018028909W WO2019049565A1 WO 2019049565 A1 WO2019049565 A1 WO 2019049565A1 JP 2018028909 W JP2018028909 W JP 2018028909W WO 2019049565 A1 WO2019049565 A1 WO 2019049565A1
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- Prior art keywords
- pressure
- sensitive adhesive
- adhesive tape
- substrate
- layer
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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
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of 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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/04—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/04—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to 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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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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]
-
- 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
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0016—Plasticisers
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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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/302—Applications of adhesives in processes or use of adhesives in the form of films or foils for bundling cables
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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
- C09J2301/30—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
- C09J2301/312—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 parameters being the characterizing feature
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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
- C09J2301/41—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the carrier layer
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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
- C09J2301/414—Additional features of adhesives in the form of films or foils characterized by the presence of essential components presence of a copolymer
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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
- C09J2407/00—Presence of natural rubber
- C09J2407/003—Presence of natural rubber in the primer coating
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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
- C09J2427/00—Presence of halogenated polymer
- C09J2427/006—Presence of halogenated 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/003—Presence of (meth)acrylic polymer in the primer coating
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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
- C09J2451/00—Presence of graft polymer
- C09J2451/003—Presence of graft polymer in the primer coating
Definitions
- the present invention relates to a substrate for an adhesive tape, an adhesive tape and a method for producing the same.
- the pressure-sensitive adhesive tape of the present invention has excellent cold resistance, and can be suitably used for bundling electric wires and cables exposed to a low temperature atmosphere.
- Various adhesive films such as insulating tapes used for various electric devices in automobiles, railways, aircraft, ships, houses, factories, etc. have appropriate flexibility and extensibility, flame retardancy, mechanical strength, heat resistance
- a pressure-sensitive adhesive is applied to one side of a substrate made of a resin composition containing a polyvinyl chloride resin as a raw material because it is excellent in deformability, electrical insulation and molding processability and is relatively inexpensive.
- the polyvinyl chloride-based pressure-sensitive adhesive film and the pressure-sensitive adhesive tape are used (Patent Document 1).
- the polyvinyl chloride-based adhesive tape described above is wound after winding the tape around the wire, bends the wire wound with the tape in an atmosphere at -30 ° C, and stretches so that no cracks or cracks occur in the tape. It is required to give.
- the present invention has been made in view of such circumstances, and provides a substrate for pressure-sensitive adhesive tapes which can suppress the occurrence of repelling at the time of coating of a water-based primer while being thin. .
- the present invention is as follows.
- a base material for an adhesive tape comprising 25 to 75 parts by mass of a plasticizer and 5 to 40 parts by mass of an inorganic filler with respect to 100 parts by mass of polyvinyl chloride resin having an average degree of polymerization of 1200 to 1800;
- a substrate for an adhesive tape wherein the average particle diameter of the material is 0.05 to 0.8 ⁇ m, and the thickness of the substrate is 40 to 80 ⁇ m.
- An adhesive tape comprising an undercoat layer and an adhesive layer in this order on the substrate described in (1) or (2).
- a method for producing a pressure-sensitive adhesive tape comprising a subbing layer forming step and a pressure sensitive adhesive layer forming step, wherein in the subbing layer forming step, the subbing on the substrate described in (1) or (2)
- the method for producing a pressure-sensitive adhesive tape comprising: applying an agent to form an undercoat layer; and applying an adhesive on the undercoat layer to form an adhesive layer in the adhesive layer forming step.
- the inventors of the present invention conducted intensive studies on the problem that the water-based primer was repelled on the surface of a 40 ⁇ m to 80 ⁇ m thick base material suitable for low temperature elongation, and the average particle diameter of the inorganic filler was 0. According to the present invention, it has been found that if the thickness is between 05 and 0.8 ⁇ m, repelling of the primer is suppressed.
- the pressure-sensitive adhesive tape produced using the substrate of the present invention has excellent cold resistance, and can be suitably used for bundling electric wires and cables exposed to a low temperature atmosphere.
- Substrate for adhesive tape and method for producing the same comprises 25 to 75 parts by mass of a plasticizer and 5 to 40 parts of an inorganic filler with respect to 100 parts by mass of polyvinyl chloride resin having an average polymerization degree of 1200 to 1800.
- the polyvinyl chloride resin in the present invention has an average polymerization degree of 1200 to 1800, and polyvinyl chloride resins of each average polymerization degree may be used singly or in combination of two or more.
- the average polymerization degree is less than 1200, the resin becomes too soft at the time of base material processing, and the film forming property is lowered.
- the average degree of polymerization is higher than 1800, the substrate becomes hard, and the ability of the tape to follow the wire when winding the tape around the wire is reduced.
- the average degree of polymerization can be measured by GPC.
- plasticizer in the present invention any plasticizer capable of imparting flexibility to polyvinyl chloride resin can be used, and specifically, DINP (diisonyl phthalate), DHP (diheptyl phthalate), DOP (phthalate) Acid (di-2-ethylhexyl), n-DOP (di-n-octyl phthalate), DIDP (diisodecyl phthalate), BBP (benzylbutyl phthalate), TOTM (tri-2-ethylhexyl trimellitate), DOA (adipine) Acid (di-2-ethylhexyl acid), TCP (tricresyl phosphate), BOA (benzyl octyl adipate), DPCP (diphenyl cresyl phosphate), diisodecyl adipate, epoxidized soybean oil, epoxidized linseed oil, chlorinated
- plasticizer one having a melting point of ⁇ 40 ° C. or less is preferable. In this case, the tensile elongation of the substrate can be improved even under an environment of -30.degree.
- the content of the plasticizer is 25 to 75 parts by mass, preferably 45 to 75 parts by mass, more preferably 50 to 70 parts by mass, and still more preferably 55 to 65 parts by mass.
- the content of the plasticizer is 25 parts by mass or more, the tensile elongation under a ⁇ 30 ° C. atmosphere tends to be favorable.
- the content of the plasticizer is 75 parts by mass or less, the base material does not become too soft, and it is possible to suppress that the tensile strength is reduced or the film forming property is deteriorated.
- the plasticizer transfer to an adhesive layer is suppressed, and it is suppressed that an adhesive tape peels from an electric wire from the fall of adhesive force.
- any inorganic particles that can be used as a filler for polyvinyl chloride resin can be used.
- the average particle size of the inorganic filler is 0.05 to 0.8 ⁇ m, and more preferably 0.07 to 0.75.
- the average particle size can be determined by the air permeation method by the following method. (1) Put a sieve plate in a sample cylinder of 2 cm 2 in cross-sectional area, and lay a special filter paper on it. 3 g of a sample is weighed and put in a sample cylinder, and one sheet of filter paper is placed thereon, and pressure-filled with a plunger to adjust the thickness of the sample layer to 1.35 cm.
- the content of the inorganic filler is 5 to 40 parts by mass, preferably 10 to 35 parts by mass, and more preferably 15 to 30 parts by mass.
- the polyvinyl chloride base material of the present invention may contain, as necessary, a modifier, a colorant, a stabilizer, an antioxidant, an ultraviolet light absorber, a lubricant and the like as a modifier and other additives, as long as the effects of the present invention are not impaired. It can be blended.
- vinyl chloride-vinyl acetate copolymer for example, vinyl chloride-vinyl acetate copolymer, vinyl chloride-ethylene copolymer, vinyl chloride-propylene copolymer, chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene Copolymers, methyl methacrylate-butadiene-styrene copolymers, acrylonitrile-butadiene copolymers, thermoplastic polyurethanes, polyester-based thermoplastic elastomers and the like can be mentioned. These may be used alone or in combination of two or more.
- the base material for an adhesive tape of the present invention can be obtained by melt-kneading a composition in which a polyvinyl chloride resin, a plasticizer, an inorganic filler, other additives and the like are mixed.
- the melt-kneading method is not particularly limited, but various mixers and kneaders equipped with heating devices such as a twin-screw extruder, a continuous type and a batch type kneader, a roll, and a Banbury mixer can be used, and the above composition
- the resulting mixture is molded into a substrate by a conventional molding method such as calendar method, T-die method, inflation method or the like.
- the molding machine is preferably a calender molding machine in terms of productivity, color change, shape uniformity and the like.
- a roll arrangement method in calendering for example, a known method such as L-type, inverted L-type, Z-type or the like can be adopted, and the roll temperature is usually set to 150 to 200 ° C., preferably 155 to 190 ° C.
- the substrate thickness is usually 40 to 80 ⁇ m, more preferably 50 to 75 ⁇ m, more preferably 50 to 70 ⁇ m.
- the pressure-sensitive adhesive tape of the present invention comprises an undercoat layer and a pressure-sensitive adhesive layer in this order on the above-described pressure-sensitive adhesive tape substrate.
- the pressure-sensitive adhesive tape can be manufactured by a method including a subbing layer forming step and a pressure-sensitive adhesive layer forming step. Each step will be described below.
- an undercoating agent is applied on the above-mentioned substrate to form an undercoat layer.
- the primer is preferably a water-based primer containing a water-based latex.
- the substrate of the present invention is used Thus, even when the water-based primer is used, the substrate is prevented from repelling the primer.
- the aqueous latex of the primer preferably contains a natural rubber latex containing a component derived from natural rubber, and contains a graft polymer latex obtained by graft polymerizing a (meth) acrylate (eg, methyl methacrylate) to the natural rubber. Is more preferred. In addition, it is more preferable that the aqueous latex further contains an acrylonitrile butadiene copolymer emulsion.
- the above graft polymer latex is preferably in the range of 70 to 50% by mass of natural rubber and 30 to 50% by mass of (meth) acrylic acid ester. If the ratio of (meth) acrylic acid ester in the graft polymer is less than 30% by mass, the adhesion between the (meth) acrylic acid ester and the film substrate may be deteriorated, and delamination of the adhesive tape may occur. . When the proportion of (meth) acrylic acid ester is more than 50% by mass, the primer composition itself cures and can not follow the deformation of the film substrate, which may cause delamination of the pressure-sensitive adhesive tape.
- the acrylonitrile butadiene copolymer emulsion includes medium nitrile type (nitrile content 25 to 30%), medium high nitrile type (nitrile content 31 to 35%) high nitrile type (nitrile content 36 to 43%), and the like. . These may be used alone or in combination of two or more.
- the primer layer can be formed by applying the above-mentioned primer on a substrate and then drying it.
- the undercoat layer contains a resin (natural rubber-derived component, graft polymer, acrylonitrile butadiene copolymer) obtained by removing water from the above-mentioned latex or emulsion.
- the thickness of the primer is usually 0.1 to 1 ⁇ m, more preferably 0.3 to 0.5 ⁇ m.
- a pressure-sensitive adhesive is applied onto the undercoat layer to form a pressure-sensitive adhesive layer.
- the pressure-sensitive adhesive layer in the present invention, is 50 to 150 parts by mass (solid content) of a tackifying resin emulsion with respect to 100 parts by mass (solid content) of a rubber component of a mixture comprising natural rubber latex and synthetic rubber latex. Is preferred.
- the tackifier resin emulsion can be selected in consideration of the softening point, the compatibility with each component, and the like.
- the thickness of the pressure-sensitive adhesive layer varies depending on the purpose of use, application and the like, but is usually 5 to 50 ⁇ m, more preferably 10 to 30 ⁇ m.
- the moisture is sufficiently dried by a drying furnace, and then the pressure-sensitive adhesive surface and the release paper are bonded to each other to form a pressure-sensitive adhesive film.
- it can be made into an adhesive tape shape by winding up in a tape log shape and cutting into arbitrary width.
- the pressure-sensitive adhesive tape of the present invention is characterized by a tensile elongation of 80% to 220% under an atmosphere of ⁇ 30 ° C.
- the pressure-sensitive adhesive tape of the present invention has excellent cold resistance, and can be suitably used for bundling electric wires and cables exposed to a low temperature atmosphere.
- subbing Layer Formation The subbing agent having the composition shown in the table was applied by a gravure method on the produced base material and dried to form a subbing layer.
- a pressure-sensitive adhesive was applied on the undercoat layer by a comma method, dried to form a pressure-sensitive adhesive layer, wound into a tape log shape, and cut into 10 mm width to obtain a sample tape .
- 40 parts of Lidex Corporation, MG-40S 40 parts of Lidex Corporation, MG-40S
- Adekasizer D-32 Epoxidized fatty acid octyl ester, Adeka Co., Ltd.
- Softon 2200, Softon 3200 Calcium carbonate, Bihoku Powder Chemical Industry Calcey's P, Calcee's PL-10: Calcium carbonate, Kamijima Chemical Co., Ltd.
- KT-4612- A Mixture emulsion of graft polymer latex and acrylonitrile butadiene copolymer emulsion obtained by graft polymerizing methyl methacrylate to natural rubber, E-Tech Co., Ltd., Rethex MG40: graft polymerizing monomethyl methacrylate using "natural rubber latex" as a base material
- Nipol 1562 Acrylonitrile-Butadiene Latex (Medium-High Nitrile), Nippon Zeon Co., Ltd. Company-made
- Calender roll peeling> Calender molding is performed at a roll temperature of 165 ° C., the degree of peeling of the substrate from the roll is determined, and the following determination is made. Good: Non-sticky to the roll, peeling off Defective: Sticking to the roll, hard to peel off, or non-peeling
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Paints Or Removers (AREA)
Abstract
Description
(1)平均重合度1200~1800のポリ塩化ビニル樹脂100質量部に対し、可塑剤25~75質量部、無機充填材5~40質量部を含む、粘着テープ用基材であって前記無機充填材の平均粒子径が0.05~0.8μmであり、前記基材の厚さが40~80μmである、粘着テープ用基材。
(2)前記可塑剤は、融点が-40℃以下である、(1)に記載の基材。
(3)(1)又は(2)に記載の基材上に、下塗層と、粘着剤層をこの順に備える、粘着テープ。
(4)前記下塗層は、天然ゴムに(メタ)アクリル酸エステルをグラフト重合させたグラフト重合体を含む、(3)に記載の粘着テープ。
(5)結束用テープである、(3)又は(4)に記載の粘着テープ。
(6)下塗層形成工程と、粘着剤層形成工程を備える、粘着テープの製造方法であって、前記下塗層形成工程では、(1)又は(2)に記載の基材上に下塗剤を塗布して下塗層を形成し、前記粘着剤層形成工程では、前記下塗層上に粘着剤を塗布して粘着剤層を形成する、粘着テープの製造方法。
(7)前記下塗剤が水系ラテックスを含む、(6)に記載の粘着テープの製造方法。
(8)前記水系ラテックスは、天然ゴムに(メタ)アクリル酸エステルをグラフト重合させたグラフト重合体ラテックスを含む、(7)に記載の粘着テープの製造方法。
本発明の粘着テープ用基材は、平均重合度1200~1800のポリ塩化ビニル樹脂100質量部に対し、可塑剤25~75質量部、無機充填材5~40質量部を含む、粘着テープ用基材であって前記無機充填材の平均粒子径が0.05~0.8μmであり、前記基材の厚さが40~80μmである。
以下、各構成について詳細に説明する。
本発明におけるポリ塩化ビニル樹脂としては、平均重合度1200~1800であり、各平均重合度のポリ塩化ビニル樹脂は単独で又は2種以上選択して使用してもよい。平均重合度1200未満では基材加工時に樹脂が柔らかくなりすぎ、製膜性が低下する。平均重合度1800より高いと基材が硬くなり電線にテープを巻き付ける際のテープの電線への追従性が低下する。平均重合度は、GPCによって測定することができる。
本発明における可塑剤としては、ポリ塩化ビニル樹脂に柔軟性を付与できる任意の可塑剤を用いることができ、具体的には、DINP(フタル酸ジイソニル)、DHP(フタル酸ジヘプチル)、DOP(フタル酸ジ-2-エチルヘキシル)、n-DOP(フタル酸ジ-n-オクチル)、DIDP(フタル酸ジイソデシル)、BBP(ベンジルブチルフタレート)、TOTM(トリメリット酸トリ-2-エチルヘキシル)、DOA(アジピン酸ジ-2-エチルヘキシル)、TCP(トリクレジルフォスフェート)、BOA(ベンジルオクチルアジペート)、DPCP(ジフェニルクレジルフォスフェート)、アジピン酸ジイソデシル、エポキシ化大豆油、エポキシ化アマニ油、塩素化パラフィン等が挙げられる。これらは単独で又は2種以上選択して使用してもよい。可塑剤としては、融点-40℃以下のものが好ましい。この場合、-30℃の環境下でも基材の引張伸び率を良好にすることができるからである。
本発明における無機充填材としては、ポリ塩化ビニル樹脂の充填材として利用可能な任意の無機粒子を用いることができ、例えば、水酸化アルミニウム、水酸化マグネシウム、水酸化ジルコニウム、水酸化カルシウム、水酸化カリウム、水酸化バリウム、トリフェニルホスフィート、ポリリン酸アンモニウム、ポリリン酸アミド、酸化ジリコニウム、酸化マグネシウム、酸化亜鉛、酸化チタン、酸化モリブデン、リン酸グアニジン、ハイドロタルサイト、スネークタイト、硼酸亜鉛、無水硼酸亜鉛、メタ硼酸亜鉛、メタ硼酸バリウム、酸化アンチモン、三酸化アンチモン、五酸化アンチモン、赤燐、タルク、アルミナ、シリカ、ベーマイト、ベントナイト、珪酸ソーダ、珪酸カルシウム、硫酸カルシウム、炭酸カルシウム、炭酸マグネシウムの無機粒子を用いることができる。
(1)断面積2cm2の試料筒にふるい板を入れ、その上に専用のろ紙を敷く。試料3gを秤量して試料筒に入れ、その上にろ紙を1枚敷き、プランジャーで加圧充填し試料層の厚さを1.35cmに調整する。
(2)試料筒のすり合わせ面にグリスを塗って測定装置にセットし、試料層両端の圧力差ΔPを500mmH2Oとして、5ccの空気が試料層を透過する時間を測定する。
(3)ただし、比表面積が5000cm2/g以下の製品については、試料層の厚さを1.20cm、試料層両端の圧力差△Pを200mmH2Oとする。
(4)次式により試料の平均粒子径を計算する。
本発明のポリ塩化ビニル系基材は必要に応じて本発明の効果を阻害しない範囲で、改質剤、及びその他添加剤として着色剤、安定剤、酸化防止剤、紫外線吸収剤、滑剤等を配合することができる。
本発明の粘着テープ用基材は、ポリ塩化ビニル樹脂、可塑剤、無機充填材、その他添加剤などを混合した組成物を溶融混練して得ることができる。溶融混練方法は特に限定されるものではないが、二軸押出機、連続式及びバッチ式のニーダー、ロール、バンバリーミキサー等の加熱装置を備えた各種混合機、混練機が使用でき、前記組成物が均一分散するように混合し、得られる混合物を慣用の成形方法であるカレンダー法、Tダイ法、インフレーション法等により基材に成形する。成形機は生産性、色変え、形状の均一性などの面からカレンダー成形機が好ましい。カレンダー成形におけるロール配列方式は、例えば、L型、逆L型、Z型などの公知の方式を採用でき、また、ロール温度は通常150~200℃、好ましくは155~190℃に設定される。基材厚みは通常40~80μm、より好ましくは50~75μm、より好ましくは50~70μmである。
本発明の粘着テープは、上記の粘着テープ用基材上に、下塗層と、粘着剤層をこの順に備える。上記の粘着テープ用基材を用いれば、水系ラテックスを含む下塗剤を塗布した場合でも、下塗剤が基材上ではじかれることが抑制されるので、基材上に均一な下塗層を形成することが容易である。このため、高い生産効率で基材と粘着剤層の密着性に優れた粘着テープを製造することができる。
下塗層形成工程では、上記の基材上に下塗剤を塗布して下塗層を形成する。下塗剤は、水系ラテックスを含む水系下塗剤が好ましい。従来の基材では、水系下塗剤を基材上に塗布すると、基材が下塗剤をはじいてしまって下塗層を均一に形成することが困難であったが、本発明の基材を用いることによって水系下塗剤を用いた場合でも、基材が下塗剤をはじくことが抑制される。
粘着剤層形成工程では、上記下塗層上に粘着剤を塗布して粘着剤層を形成する。
上記粘着剤層形成工程の後、乾燥炉により水分を十分に乾燥させたうえで、粘着剤面と剥離紙を貼り合せることで粘着フィルムとする。また、粘着剤層を乾燥させた後、テープログ形状に巻取り、任意の幅に切断することで、粘着テープ形状にすることができる。
本発明の粘着テープは、-30℃雰囲気下での引張り伸び率が80%~220%であることを特徴とする。
(1)基材の作製
表1~表2に示す配合でポリ塩化ビニル樹脂、可塑剤、及び無機充填材をバンバリーミキサーで均一に分散するように溶融混練したのち、カレンダー成形機により、ロール温度165℃にて成形して表に示す厚さの基材を作製した。
作製した基材上に表に示す配合の下塗剤をグラビア方式により塗布して乾燥させることによって下塗層を形成した。
下塗層上に粘着剤をコンマ方式により塗工、乾燥して粘着剤層を形成し、テープログ形状に巻き取った後10mm幅に切断し、サンプルテープを得た。粘着剤としては、アクリル変性天然ゴム系ラテックス(MMA/NR共重合体ラテックス(MMA/NR組成比=30/70)、(株)レヂテックス社、MG-40S)40部、スチレン-ブタジエン共重合体ラテックス((スチレン/ブタジエン組成比=25/75)、JSR(株)社、T-093A、)60部、粘着付与樹脂エマルジョン(C5石油樹脂エマルション、荒川化学(株)社、AP2100NT)120部から配合されるものを用いた。
「4.評価方法・基準」に示す方法及び基準に従って、上記基材及びサンプルテープについて各種評価を行った。その結果を表1~表2に示す。
アデカサイザーD-32:エポキシ化脂肪酸オクチルエステル、株式会社ADEKA製
ソフトン2200、ソフトン3200:炭酸カルシウム、備北粉化工業製
カルシーズP、カルシーズPL-10:炭酸カルシウム、神島化学工業株式会社
KT-4612-A:天然ゴムにメチルメタアクリレートをグラフト重合させたグラフト重合体ラテックスとアクリロニトリルブタジエン共重合体エマルジョンの混合物エマルジョン、株式会社イーテック製
レヂテックス MG40:「天然ゴムラテックス」を基材としてモノメチルメタクリレートをグラフト重合することにより、天然ゴムラテックスを改質したもの、株式会社レヂテックス製
Nipol 1562:アクリロニトリル・ブタジエン系ラテックス(中高ニトリル)、日本ゼオン株式会社製
全ての実施例は、全ての評価項目で良好な結果が得られた。
比較例1は、無機充填材の平均粒子径が大きすぎたために、下塗りハジキ及び端末剥がれが起こり、且つ-30℃での貯蔵弾性率が大きくなりすぎた。
比較例2は、ポリ塩化ビニル樹脂の平均重合度が小さすぎたために、-30℃での引張り伸び率が小さくなりすぎ、且つロール剥がれが起こった。
比較例3は、ポリ塩化ビニル樹脂の平均重合度が大きすぎたために、-30℃での貯蔵弾性率が大きくなりすぎ、且つ端末剥がれが起こった。
比較例4は、可塑剤が少なすぎたために、端末剥がれが起こった。
比較例5は、可塑剤が多すぎたために、ロール剥がれが起こった。
比較例6は、無機充填材が少なすぎたために、ロール剥がれが起こった。
比較例7は、無機充填材が多すぎたために、下塗りハジキ及び端末剥がれが起こった。
比較例8は、基材が厚すぎたために、-30℃での貯蔵弾性率が大きくなりすぎ、かつ端末剥がれが起こった。
<下塗りハジキ>
アプリケーターを用いて、基材上に下塗剤を4μm厚で10m/minの速度で塗布し、状況を観察した。
○:塗布直後より3秒観察後も基材上の下塗剤に変化なし。
×:塗布直後より3秒観察後に、下塗剤が基材上からはじかれ、円状のくぼみが観察される。
JIS C 2107に準拠して測定した引張り強度である。温度-30±2℃に設定された評価試験室内で測定した。測定結果については以下の様に判断する。
良 :引張り伸び率が80%以上
不良:引張り伸び率が80%より低い
「貯蔵弾性率」は動的粘弾性測定により求めた。測定用サンプルテープを温度-30±2℃に設定された評価試験室内にて24時間以上保管し、下記の装置を用いてその測定用サンプルテープに周波数1Hzの引っ張り方向の応力、及び歪みを加え、-30℃での貯蔵弾性率を測定した。
装置:ティー・エイ・インスツルメント社製 動的粘弾性測定装置 RSA3
良 :貯蔵弾性率が1.5×109Pa以下
不良:貯蔵弾性率が1.5×109Paより高い
電線にサンプルテープをハーフラップ状で巻き付け、巻き付け終わりの切断時に端末部分の端末剥がれの有無を目視で判定し、以下の様に判断する。
良 :端末部分に端末剥がれの無いもの
不良:端末部分に端末剥がれの有るもの
ロール温度165℃にてカレンダー成形を行い、基材のロールからの剥がれ具合を判定し、以下の様に判断する。
良 :ロールにべたつかず、剥がれるもの
不良:ロールにべたつき、剥がれにくい、もしくは剥がれないもの
Claims (8)
- 平均重合度1200~1800のポリ塩化ビニル樹脂100質量部に対し、可塑剤25~75質量部、無機充填材5~40質量部を含む、粘着テープ用基材であって
前記無機充填材の平均粒子径が0.05~0.8μmであり、
前記基材の厚さが40~80μmである、粘着テープ用基材。 - 前記可塑剤は、融点が-40℃以下である、請求項1に記載の基材。
- 請求項1又は請求項2に記載の基材上に、下塗層と、粘着剤層をこの順に備える、粘着テープ。
- 前記下塗層は、天然ゴムに(メタ)アクリル酸エステルをグラフト重合させたグラフト重合体を含む、請求項3に記載の粘着テープ。
- 結束用テープである、請求項3又は請求項4に記載の粘着テープ。
- 下塗層形成工程と、粘着剤層形成工程を備える、粘着テープの製造方法であって、
前記下塗層形成工程では、請求項1又は請求項2に記載の基材上に下塗剤を塗布して下塗層を形成し、
前記粘着剤層形成工程では、前記下塗層上に粘着剤を塗布して粘着剤層を形成する、粘着テープの製造方法。 - 前記下塗剤が水系ラテックスを含む、請求項6に記載の粘着テープの製造方法。
- 前記水系ラテックスは、天然ゴムに(メタ)アクリル酸エステルをグラフト重合させたグラフト重合体ラテックスを含む、請求項7に記載の粘着テープの製造方法。
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- 2018-08-01 EP EP18853390.5A patent/EP3680302B1/en active Active
- 2018-08-01 MX MX2019014414A patent/MX2019014414A/es unknown
- 2018-08-01 CN CN201880057743.9A patent/CN111065701B/zh active Active
- 2018-08-01 US US16/634,474 patent/US20200157383A1/en not_active Abandoned
- 2018-08-01 JP JP2019540826A patent/JP7075936B2/ja active Active
- 2018-08-01 MY MYPI2019006921A patent/MY196426A/en unknown
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2022107883A1 (ja) | 2020-11-20 | 2022-05-27 | 日東電工株式会社 | 粘着テープおよびその利用 |
DE112022005517T5 (de) | 2021-11-19 | 2024-09-12 | Nitto Denko Corporation | Druckempfindliches Klebeband und dessen Verwendung |
JP2023137842A (ja) * | 2022-03-18 | 2023-09-29 | デンカ株式会社 | 粘着テープ及びその製造方法 |
JP7474796B2 (ja) | 2022-03-18 | 2024-04-25 | デンカ株式会社 | 粘着テープ及びその製造方法 |
Also Published As
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EP3680302A4 (en) | 2020-11-25 |
TWI773801B (zh) | 2022-08-11 |
EP3680302A1 (en) | 2020-07-15 |
MX2019014414A (es) | 2020-08-03 |
JPWO2019049565A1 (ja) | 2020-08-20 |
PH12020500152A1 (en) | 2020-09-14 |
EP3680302B1 (en) | 2021-06-09 |
TW201912747A (zh) | 2019-04-01 |
CN111065701B (zh) | 2021-07-23 |
KR20200051736A (ko) | 2020-05-13 |
US20200157383A1 (en) | 2020-05-21 |
KR102533504B1 (ko) | 2023-05-16 |
JP7075936B2 (ja) | 2022-05-26 |
MY196426A (en) | 2023-04-10 |
CN111065701A (zh) | 2020-04-24 |
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