WO2021060299A1 - 糸状粘着体の貼付方法および仮支持体付き糸状粘着体 - Google Patents
糸状粘着体の貼付方法および仮支持体付き糸状粘着体 Download PDFInfo
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- WO2021060299A1 WO2021060299A1 PCT/JP2020/035860 JP2020035860W WO2021060299A1 WO 2021060299 A1 WO2021060299 A1 WO 2021060299A1 JP 2020035860 W JP2020035860 W JP 2020035860W WO 2021060299 A1 WO2021060299 A1 WO 2021060299A1
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- adhesive
- temporary support
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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
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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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
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
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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
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
- B32B37/025—Transfer laminating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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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
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/062—Copolymers with monomers not covered by C09J133/06
- C09J133/064—Copolymers with monomers not covered by C09J133/06 containing anhydride, COOH or COOM groups, with M being metal or onium-cation
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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
- C09J7/10—Adhesives in the form of films or foils without carriers
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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
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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
- C09J7/385—Acrylic 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/202—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive being in the form of fibres
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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
- C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
- C09J2301/502—Additional features of adhesives in the form of films or foils characterized by process specific features process for debonding adherents
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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
Definitions
- the present invention relates to a method for attaching a thread-like adhesive body and a thread-like adhesive body with a temporary support.
- Adhesive materials such as double-sided adhesive tape may be used when bonding articles.
- the double-sided adhesive tape usually has a certain width, and is not suitable when the shape of the article to be bonded is complicated or when the width of the adhesive region is narrow.
- a method for realizing such bonding a method using a double-sided adhesive tape cut into a narrow width and a method using a double-sided adhesive tape cut into a desired shape by punching can be considered.
- Patent Document 1 discloses an adhesive film having excellent cutability, that is, an adhesive film in which the adhesive is prevented from pulling threads when cut.
- the double-sided adhesive tape cut into a narrow width has problems that it is not suitable for sticking in a curved shape, the front and back sides are easily twisted, and the handling is poor.
- a double-sided adhesive tape cut into a desired shape by punching does not have such a problem, but there are problems such as man-hours for processing and cost because many parts are discarded by processing.
- any of the above-mentioned adhesive tapes involves cutting the pressure-sensitive adhesive layer in the manufacturing process, but when the pressure-sensitive adhesive layer contains hard particles such as a filler, there is a problem that it is difficult to cut the pressure-sensitive adhesive layer.
- a method of using a filamentous adhesive body As a method of solving the above-mentioned problems, there is a method of using a filamentous adhesive body.
- the filamentous adhesive can be bent and deformed in various directions and angles, and since there is no concept of front and back, there is no deterioration in handleability due to twisting, and it takes man-hours and costs to deform into a desired shape.
- the pressure-sensitive adhesive layer is not cut in the manufacturing process, it is easy to include hard particles in the pressure-sensitive adhesive layer.
- a high level of technology may be required for affixing, or a device for affixing may be required.
- the present invention has been made in view of the above, and provides a method for attaching a thread-like adhesive that can easily attach a thread-like adhesive in a desired shape, and a thread-like adhesive with a temporary support used for the application. With the goal.
- the method for attaching the thread-like adhesive body of the present invention that solves the above problems is a method for attaching the thread-like adhesive body to the adherend in a desired shape, and the thread-like adhesive body is desired for the temporary support. This includes crimping the surface of the thread-like adhesive body with a temporary support attached in an inverted shape to the adherend on the thread-like adhesive body side.
- One aspect of the method for attaching the filamentous adhesive of the present invention may further include peeling and removing the temporary support from the filamentous adhesive after pressure bonding.
- the temporary support may be peeled off and removed from the thread-like adhesive body by peeling.
- the thread-like adhesive body may include a thread-like core material and a pressure-sensitive adhesive layer that covers the peripheral surface of the core material.
- the temporary support may have a 5% strain stress of 20 N or more.
- the surface to which the filamentous adhesive of the temporary support is attached may have a peel adhesive strength of 0.30 N / 50 mm or more as measured by the following peel test. ..
- an aqueous dispersion type acrylic pressure-sensitive adhesive composition is prepared.
- the obtained water-dispersible acrylic pressure-sensitive adhesive composition was applied to a PET substrate having a thickness of 700 mm ⁇ 250 mm and a thickness of 25 ⁇ m with an applicator, and dried at 100 ° C. for 2 minutes to form a pressure-sensitive adhesive layer having a thickness of 40 ⁇ m.
- an adhesive tape for evaluation of peelability is obtained.
- the surface opposite to the surface to which the thread-like adhesive body of the temporary support is attached is attached to the SUS plate, and then the adhesive tape for peelability evaluation is made into a width of 50 mm ⁇ a length of 100 mm. It is cut, attached to the surface to which the thread-like adhesive body of the temporary support is attached, and crimped by reciprocating once with a 2 kg roller. After 20 minutes have passed from the crimping, the peeling adhesive tape for evaluation of peelability is peeled off from the temporary support under the conditions of a peeling angle of 180 ° and a peeling speed of 300 mm / min, and the peel adhesive strength is measured.
- the peel adhesive strength measured by the peel test on the surface to which the filamentous adhesive of the temporary support is attached is such that the filamentous adhesive of the adherend is attached. It may be less than the peel adhesive force of the surface as measured by the peel test.
- the thread-like adhesive body with a temporary support of the present invention is a thread-like adhesive body with a temporary support used for attaching the thread-like adhesive body to an adherend in a desired shape. A temporary support and a thread-like adhesive having a desired shape inverted on the temporary support are provided.
- the surface to which the thread-like adhesive body of the temporary support is attached has a peel adhesive strength of 0.30 N / 50 mm or more as measured by the peel test.
- the thread-like adhesive body may include a thread-like core material and a pressure-sensitive adhesive layer that covers the peripheral surface of the core material.
- a method for attaching a thread-like adhesive body that can easily attach the thread-like adhesive body in a desired shape, and a thread-like adhesive body with a temporary support used for the application method.
- FIG. 1 is a schematic perspective view of a thread-like adhesive body with a temporary support according to an embodiment of the present invention.
- FIG. 2 is a schematic perspective view showing a state in which the surface of the thread-like adhesive body with a temporary support on the thread-like adhesive body side shown in FIG. 1 is pressure-bonded to the adherend.
- FIG. 3 is a schematic perspective view of a state in which the temporary support is peeled off and removed from the state shown in FIG.
- FIG. 4 is a schematic view of the thread-like adhesive body with a temporary support used in Test Example 3.
- the method for attaching the filamentous adhesive body of the present invention is a method for attaching the filamentous adhesive body to the adherend in a desired shape, and the shape in which the filamentous adhesive body is inverted from the desired shape on the temporary support. Includes crimping the surface of the thread-like adhesive body with the temporary support attached in 1 to the adherend.
- the thread-like adhesive body with a temporary support of the present invention is a thread-like adhesive body with a temporary support used for attaching the thread-like adhesive body to an adherend in a desired shape, and is a temporary support and the temporary support.
- a thread-like adhesive having a shape obtained by reversing the desired shape is provided on the surface, and the surface of the temporary support to which the thread-like adhesive is attached has a peel adhesive force of 0.30 N /, which is measured by a peel test described later. It is 50 mm or more.
- the method for attaching the thread-like adhesive body of the present invention and the embodiment of the thread-like adhesive body with a temporary support will be described in detail.
- the present invention is not limited to the embodiments described below.
- members / parts having the same action may be described with the same reference numerals, and duplicate description may be omitted or simplified.
- the embodiments described in the drawings are modeled for clearly explaining the present invention, and do not necessarily accurately represent the size and scale of an actual product.
- the thread-like adhesive body is a thread-like adhesive body having an adhesive peripheral surface thereof.
- the filamentous shape means that the length in the longitudinal direction is sufficiently longer than the length in the width direction, and the short axis (hereinafter, also referred to as "cross-sectional shape") in the shape of the cross section perpendicular to the longitudinal direction passes through the center of gravity of the cross-sectional shape.
- the ratio (major axis / minor axis) of the length of the long axis (the longest axis passing through the center of gravity of the cross-sectional shape) to the length of the shortest axis) is, for example, 200 or less, preferably 100 or less.
- the shape is more preferably 50 or less, further preferably 10 or less, still more preferably 5 or less, particularly preferably 3 or less, and it is in a state where it can be bent in various directions and angles like a thread. means.
- the cross-sectional shape of the filamentous adhesive body in the present embodiment is typically circular, but the cross-sectional shape is not limited to this, and various shapes such as an ellipse and a polygon can be taken in addition to the circular shape. Further, the length and thickness of the filamentous adhesive body in the present embodiment are not particularly limited, and may be appropriately adjusted according to the intended use.
- the filamentous pressure-sensitive adhesive in the present embodiment may include a core material and a pressure-sensitive adhesive layer made of a pressure-sensitive adhesive that covers the peripheral surface of the core material, or may be composed of only a pressure-sensitive adhesive without a core material. .. From the viewpoint of strength and handleability, it is preferable that the filamentous adhesive has a core material.
- a filamentous adhesive consisting only of an adhesive can be obtained, for example, by applying the adhesive linearly on a separator and, if necessary, heating and drying.
- the filamentous adhesive body provided with the core material can be obtained, for example, by applying the pressure-sensitive adhesive composition to the surface of the core material by dipping, dipping, coating or the like, and heating and drying as necessary.
- the pressure-sensitive adhesive composition can be applied using a conventional coater such as a gravure roll coater, a reverse roll coater, a kiss roll coater, a dip roll coater, a bar coater, a knife coater, or a spray coater.
- the type of adhesive used is not particularly limited, and for example, acrylic adhesive, rubber adhesive, vinyl alkyl ether adhesive, silicone adhesive, polyester adhesive, polyamide adhesive, urethane adhesive. , Fluorine-based adhesives, epoxy-based adhesives, etc. can be used. Of these, rubber-based adhesives and acrylic-based adhesives are preferable, and acrylic-based adhesives are particularly preferable, from the viewpoint of adhesiveness.
- As the pressure-sensitive adhesive only one type may be used alone, or two or more types may be used in combination.
- Acrylic adhesives are mainly composed of (meth) acrylic acid alkyl esters such as ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, isooctyl acrylate, and isononyl acrylate, and if necessary, acrylonitrile, vinyl acetate, etc.
- the main ingredient is a polymer made by adding modifying monomers such as styrene, methyl methacrylate, acrylic acid, maleic anhydride, vinylpyrrolidone, glycidyl methacrylate, dimethylaminoethyl methacrylate, hydroxyethyl acrylate, and acrylamide. ..
- Rubber-based adhesives include natural rubber, styrene-isoprene-styrene block copolymer, styrene-butadiene-styrene block copolymer, styrene-ethylene / butylene-styrene block copolymer, styrene butadiene rubber, polybutadiene, polyisoprene, etc. It is mainly composed of rubber-based polymers such as polyisobutylene, butyl rubber, chloroprene rubber, and silicone rubber.
- these adhesives include rosin-based, terpene-based, styrene-based, aliphatic petroleum-based, aromatic petroleum-based, xylene-based, phenol-based, kumaron inden-based, tackifier resins such as their hydrogen additives, and cross-linking.
- Various additives such as agents, ultraviolet absorbers, antioxidants, and light stabilizers can be appropriately blended.
- the pressure-sensitive adhesive either a solvent-type pressure-sensitive adhesive or a water-dispersible type pressure-sensitive adhesive can be used.
- a water-dispersible adhesive is preferable from the viewpoints that high-speed coating is possible, it is environmentally friendly, and the influence of the solvent on the core material (swelling, dissolution) is small.
- the amount of adhesive adhered is adhered to the core material from the viewpoint of adhesive strength, and specifically, the amount of adhesive adhered (the amount of the adhesive layer per unit length).
- the weight is preferably 5 mg / m or more, more preferably 8 mg / m or more, and even more preferably 16 mg / m or more.
- the amount of the pressure-sensitive adhesive adhered is preferably 200 mg / m or less, more preferably 180 mg / m or less, and even more preferably 160 mg / m or less.
- the form and material of the core material in the thread-like adhesive body provided with the core material are not particularly limited as long as they are thread-like members, and may be appropriately adjusted according to the required properties such as strength, weight, and hardness.
- the cross-sectional shape of the core material is typically circular, but it can take various shapes such as an ellipse and a polygon in addition to the circular shape.
- the core material may be a monofilament composed of a single filament, a multifilament composed of a plurality of filaments, and generally a textured yarn that has been subjected to spun yarn, crimping, bulking, or the like. , Bulky yarn, processed yarn called stretch yarn, hollow yarn, or a yarn obtained by twisting and combining these yarns and the like.
- the thickness of the core material is not particularly limited, and may be appropriately adjusted together with the thickness of the pressure-sensitive adhesive layer so that the thickness of the filamentous pressure-sensitive adhesive is appropriate according to the width of the gap.
- the material of the core material may be appropriately selected according to the required properties such as strength, weight, and hardness.
- core material include rayon, cupra, acetate, promix, nylon, aramid, vinylon, vinylidene, polyvinyl chloride, polyester, acrylic, polyethylene (PE), polypropylene (PP), ethylene / propylene copolymer, etc.
- Polyethylene such as ethylene / vinyl acetate copolymer, polyester such as polyethylene terephthalate (PET), vinyl chloride resin, vinyl acetate resin, polyimide resin, polyamide resin, fluororesin, polyurethane, polypropylene, polylactic acid and other various polymer materials;
- Various rubbers such as synthetic rubbers such as natural rubbers and polyurethanes; inorganic materials such as glass, carbon materials and metals; natural materials such as cotton and wool; foams such as foamed polyurethanes and foamed polychloroprene rubbers can be used.
- Fillers inorganic fillers, organic fillers, etc.
- antioxidants antioxidants
- UV absorbers antistatic agents
- lubricants plasticizers
- colorants pigments, dyes, etc.
- Etc. colorants
- the surface of the core material may be subjected to known or conventional surface treatment such as corona discharge treatment, plasma treatment, application of an undercoating agent, and the like.
- the entire peripheral surface of the core material does not necessarily have to be covered with the adhesive layer, and as long as the effect of the present invention is exhibited, the core material does not partially include the adhesive layer. It may have a portion. Further, the end face of the core material may or may not be covered with an adhesive layer. For example, if the adhesive is cut during the manufacturing process or during use, the end face of the core may not be covered by the adhesive layer.
- FIG. 1 shows a schematic perspective view of a thread-like adhesive body with a temporary support according to the present embodiment.
- the thread-like adhesive body 1 with a temporary support in the present embodiment is obtained by attaching the above-mentioned thread-like adhesive body 3 to the temporary support body 2.
- the shape of the temporary support is not particularly limited, but it is preferably in the form of a film as shown in FIG. 1, for example.
- the shape of the filamentous adhesive body on the temporary support will be described.
- the shape of the filamentous adhesive is when the filamentous adhesive attached to a certain surface (temporary support or the surface of the adherend) is observed from the surface side to which the filamentous adhesive is attached. Means the shape of.
- the thread-like adhesive body with a temporary support of the present embodiment is used to attach the thread-like adhesive body to the adherend in a desired shape, but at the time of attachment, the thread-like adhesive body on the temporary support is attached. Transfer to the adherend and attach. Therefore, the shape of the thread-like adhesive body attached to the adherend is a shape obtained by reversing the shape of the thread-like adhesive body in the thread-like adhesive body with a temporary support. Therefore, when the filamentous adhesive is attached to the temporary support to form the filamentous adhesive with the temporary support, the filamentous adhesive is attached to the temporary support in an inverted shape.
- the thread-like adhesive can be stably attached to the surface to which the temporary support is attached. It becomes easy to attach the desired shape in an inverted shape.
- the index of the peelability of the sticking surface of the temporary support to the thread-like adhesive include the peel adhesive force measured by the peel test described below. The greater the peel adhesive force, the smaller the peelability.
- the peel adhesive force of the sticking surface of the temporary support in the present embodiment is preferably 0.30N / 50mm or more, more preferably 0.50N / 50mm or more, further preferably 1N / 50mm or more, and 2N / 50mm.
- the above is particularly preferable.
- the peelability of the temporary support to the filamentous adhesive is smaller than the detachability of the adherend to the filamentous adhesive, the temporary support is peeled off from the filamentous adhesive after the filamentous adhesive is attached to the adherend. May be difficult. Therefore, in the present embodiment, it is preferable that the peel adhesive force of the temporary support is smaller than the peel adhesive force of the adherend.
- the peel adhesive force of the sticking surface of the temporary support in the present embodiment is preferably 55 N / 50 mm or less, more preferably 45 N / 50 mm or less, and further preferably 35 N / 50 mm or less.
- peel test In the peel test, first, an adhesive tape for evaluation of peelability is manufactured, this is attached to a temporary support, the peel is peeled off, and the adhesive strength (peel adhesive strength) is measured. A method for manufacturing the adhesive tape for evaluation of peelability and a method for measuring the peel adhesive strength will be described in detail below.
- the emulsified monomer emulsion is gradually added dropwise over 4 hours to allow the emulsion polymerization reaction to proceed.
- the system was kept at 60 ° C. for 3 hours, the system was cooled to room temperature, and the pH was adjusted to 7 by adding 10 wt% aqueous ammonia to make an acrylic polymer emulsion (aqueous dispersion type). Acrylic polymer) is obtained.
- a tackifier resin emulsion an aqueous emulsion of a polymerized rosin ester having a softening point of 160 ° C., Arakawa Kagaku
- E-865NT a tackifier resin emulsion
- 10% by weight ammonia water as a pH adjuster and polyacrylic acid as a thickener manufactured by Toa Synthetic Co., Ltd., trade name "Aron B-500
- the pH was 7.2 and the viscosity was 10 Pa.
- the obtained water-dispersible acrylic pressure-sensitive adhesive composition was coated on a PET substrate (trade name "Lumilar S10” manufactured by Toray Industries, Inc.) having a thickness of 700 mm x 250 mm and a thickness of 25 ⁇ m with an applicator, and 2 at 100 ° C. It is dried for a minute to form an adhesive layer having a thickness of 40 ⁇ m, and an adhesive tape for evaluation of peelability is obtained.
- a PET substrate trade name "Lumilar S10” manufactured by Toray Industries, Inc.
- the adhesive tape for evaluation of peelability is peeled off from the temporary support under the conditions of a peeling angle of 180 ° and a peeling speed of 300 mm / min, and the adhesive strength (peeling adhesive strength) is measured.
- the peelability of the temporary support can be controlled by appropriately changing the material of the temporary support, applying unevenness treatment or peeling treatment to the surface of the temporary support, or the like.
- Examples of the method of unevenness processing include embossing and blasting.
- an uneven surface may be formed on the temporary support by applying a composition containing a binder resin and particles to the temporary support and then curing the composition.
- a known method can be used, and for example, screen printing, gravure printing, transfer by nanoimprint, or the like may be used. Of these, embossing is particularly preferable because it is easy to obtain the desired peelability.
- the peeling treatment can be performed by applying a peeling treatment agent to the temporary support. Any suitable stripping agent can be used as the stripping agent.
- silicone-based release agents for example, silicone-based release agents, fluorine-based release agents, long-chain alkyl-based release agents, low-molecular-weight polyethylene-based release agents, low-molecular-weight polypropylene-based release agents, rubber-based polymers, phosphoric acid ester-based surfactants, and the like can be used. ..
- the hardness of the temporary support is not particularly limited, and may be appropriately set according to the application, the shape of the thread-like adhesive body, and the like.
- the temporary support is soft because it can be deformed along the irregularities.
- the temporary support is preferably hard.
- the temporary support preferably has a 5% strain stress of 20 N or more, more preferably 25 N or more, and further preferably 30 N or more.
- a temporary support having a 5% strain stress of 20 N or more is peeled off and removed by peeling, the filamentous adhesive can be peeled off while being pressed against the adherend by the rigidity (repulsive force) of the temporary support, so that the filamentous adhesive becomes the adherend. It is thought that it will be easily transferred.
- the 5% strain stress of the temporary support can be measured by the method described in the examples.
- the temporary support is embossed. It is considered that when the embossed temporary support is used, the adhesive area between the temporary support and the filamentous adhesive is reduced, and the filamentous adhesive can be easily transferred to the adherend even if the temporary support is soft.
- the preferred peel angle described later can be achieved by deforming the adherend without deforming the temporary support.
- the thickness of the temporary support is not particularly limited, and may be appropriately adjusted according to the desired hardness and the like.
- the material of the temporary support in the present embodiment is not particularly limited, and may be appropriately selected depending on the desired peelability, hardness, and the like.
- a paper, a resin film, a metal foil, or the like that has been subjected to surface treatment such as unevenness treatment or peeling treatment can be used as a temporary support.
- the resin constituting the resin film include polyester resin, polyolefin resin, polyamide resin, polyimide resin, polyphenylene sulfide resin, polycarbonate resin, polyurethane resin, ethylene-vinyl acetate resin, and polytetrafluoro.
- a fluororesin such as ethylene and an acrylic resin such as polymethylmethacrylate can be used.
- the resin film may be formed by using a resin material containing one kind of such a resin alone, or may be formed by using a resin material in which two or more kinds are blended. Good. Further, the resin film may be unstretched or stretched (uniaxially stretched or biaxially stretched).
- the drawability of the thread-like adhesive body with the temporary support can be improved. It is considered that this is because the component distribution on the surface of the temporary support changes, the elastic modulus changes, and the tackiness increases by applying heat.
- the pressure when crimping the filamentous adhesive can be reduced.
- the pressure is low, even if the temporary support is thin or soft, it is possible to prevent wrinkles and broken marks from remaining on the temporary support.
- the thread-like adhesive body with a temporary support of the present embodiment may further include a separator on the surface on the thread-like adhesive body side. That is, in the thread-like adhesive body with the temporary support of the present embodiment, the thread-like adhesive body may be sandwiched between the temporary support and the separator.
- the separator is provided to protect the surface of the filamentous adhesive that is attached to the adherend.
- the material, thickness, hardness, etc. of the separator are not particularly limited, but when attaching the filamentous adhesive to the adherend, it is necessary to first peel off only the separator from the filamentous adhesive sandwiched between the temporary support and the separator. is there. Therefore, the peelability of the separator to the filamentous adhesive is preferably greater than the detachability of the temporary support to the filamentous adhesive. That is, it is preferable that the above-mentioned peel adhesive force of the separator is smaller than the above-mentioned peel adhesive force of the temporary support.
- the back surface of the temporary support may be used as a separator. That is, a temporary support of another thread-like adhesive with a temporary support may be attached to the surface to be attached to the adherend of the thread-like adhesive.
- a method of making such a state a method of laminating a plurality of thread-like adhesive bodies with a temporary support (method A) and a method of winding a method in which a plurality of thread-like adhesive bodies are attached to one temporary support (method A). Method B) can be mentioned.
- the compressive elastic modulus of the temporary support shall be 1.5 MPa or less, or as described above, a separator shall be further provided on the surface on the filamentous adhesive side, and the compressive elastic modulus of the separator shall be 1.5 MPa or less. Is preferable.
- the compressive elastic modulus By setting the compressive elastic modulus to 1.5 MPa or less, it is possible to reduce the pressure due to the winding tightening applied to the adhesive tape during the production of the roll. Further, during the storage and transportation of the rolls, it is possible to reduce the tightness of the rolls due to the stacking of the rolls and the change in temperature and humidity.
- the compressive elastic modulus can be measured by the following compression test using, for example, an autograph (manufactured by Shimadzu Corporation, a small desktop tester EXtest).
- a test substance (length 4 cm x width 4 cm) is placed on an acrylic table in a room at a temperature of 23 ° C., and a cylindrical indenter (made of SUS, indenter area: 100 mm 2 ) is placed on the center of the test substance.
- the compressive stress is measured while pressing in the vertical direction at a compression rate of 0.1 mm / min, and the compressive elastic modulus E (MPa) is calculated from the following formula.
- the compressive elastic modulus of the separator is 1.5 MPa or less.
- the thread-like adhesive body is not exposed when the thread-like adhesive body with the temporary support of the present embodiment is used. Further, it is possible to prevent the temporary support from becoming flexible and making drawing difficult while crimping the nozzle.
- peel adhesive strength of temporary support is preferably 0.5 N / 50 mm or more, more preferably 5 N / 50 mm or more, and 10 N. It is more preferable that it is / 50 mm or more.
- FIG. 2 is a schematic perspective view showing a state in which the surface of the thread-like adhesive body 1 with a temporary support on the thread-like adhesive body 3 side is pressure-bonded to the adherend 4.
- the thread-like adhesive body 1 with a temporary support is crimped in this way to attach (transfer) the thread-like adhesive body 3 to the adherend 4 in a desired shape.
- the crimping method is not particularly limited as long as the filamentous adhesive is adhered to the adherend, and may be pressed by a roller or a finger via a temporary support, for example.
- FIG. 3 shows a schematic perspective view of a state in which the temporary support 2 is peeled off and removed.
- the peeling angle at this time is preferably 5 ° or more, more preferably 10 ° or more, and even more preferably 20 ° or more.
- the temporary support may be peeled while being deformed, the adherend may be peeled while being deformed, and both the temporary support and the adherend may be peeled while being deformed. You may.
- a suitable peeling method may be appropriately selected according to the hardness (deformability) of the temporary support and the adherend.
- the thread-like adhesive body of the present embodiment is formed (drawn) on the temporary support into a shape in which the desired shape is inverted, and then transferred to the adherend.
- the adhesive is attached in a desired shape.
- the filamentous adhesive body can be easily attached to the adherend even when the attachment shape is complicated.
- the method of attaching the filamentous adhesive material of the present embodiment is, for example, a cable such as an electric wire or an optical fiber, an LED fiber light, an optical fiber sensor such as an FBG (Fiber Bragg Gratings, fiber bragg grating), a thread, a string, and the like.
- the thread-like adhesive body of the present embodiment can be used for the member to which the wire rod or the narrow member is attached.
- the thread-like adhesive body can be easily attached according to the complicated shape that the wire rod or the narrow member should have.
- the method of attaching the thread-like adhesive body of the present embodiment is also suitable as, for example, a method of attaching the thread-like adhesive body for temporarily fixing (temporarily fixing) one article to the surface of another article.
- a thread-like adhesive for temporary fixing temporary fixing
- textile products such as clothes, shoes, bags, hats, and leather products.
- temporary fixing is performed by a thread-like adhesive body
- it is easy to temporarily fix the sewing product while avoiding the sewn portion and it is possible to easily prevent the adhesive from adhering to the needle.
- the article to be sewn has a complicated shape or is easily deformed, it may not be easy to attach the thread-like adhesive body.
- the filamentous adhesive can be easily attached according to the method for attaching the filamentous adhesive according to the present embodiment.
- the uses described above are merely examples, and the uses to which the method for attaching the filamentous adhesive body of the present embodiment is applied are not limited to these.
- the monomer emulsion includes 98 parts by weight of 2-ethylhexyl acrylate, 1.25 parts by weight of acrylic acid, 0.75 parts by weight of methacrylic acid, 0.05 parts by weight of lauryl mercaptan (chain transfer agent), and ⁇ -methacryloxypropyltrimethoxysilane.
- a tackifier resin emulsion manufactured by Arakawa Chemical Industry Co., Ltd., trade name "E-865NT" was added based on the solid content. Furthermore, using 10% by mass aqueous ammonia as a pH adjuster and polyacrylic acid as a thickener (manufactured by Toagosei Co., Ltd., trade name "Aron B-500”), the pH was 7.2 and the viscosity was 10 Pa. ⁇ Adjusted to s. In this way, a water-dispersible acrylic pressure-sensitive adhesive for the pressure-sensitive adhesive layer was obtained.
- a core material (fineness 280 dtex) was obtained by twisting 48 polyester yarns at 150 times / m.
- the obtained core material is coated with the obtained water-dispersible acrylic pressure-sensitive adhesive by dipping so that the amount of the pressure-sensitive adhesive adhered to the obtained filamentous pressure-sensitive adhesive is 22 mg / m, and then the temperature is 80 ° C. for 5 minutes. It was dried to form a pressure-sensitive adhesive layer to obtain a filamentous pressure-sensitive adhesive.
- Temporary support 1 PET film with silicone peeling treatment (manufactured by Mitsubishi Chemical Corporation, trade name "Diamond Foil MRF")
- Temporary support 2 Silicone separator (manufactured by Toyobo Co., Ltd., product number "E7006")
- Temporary support 3 Silicone separator (manufactured by Toyobo Co., Ltd., product number "E7001")
- Temporary support 4 Non-silicone separator (manufactured by Toyobo Co., Ltd., product number "TN100")
- Temporary support 5 High-density polyethylene film (manufactured by Sankyo Polyethylene Co., Ltd.)
- Temporary support 6a Non-silicone separator (manufactured by Toyobo Co., Ltd., product number "TN200")
- Temporary support 6b Non-silicone separator (manufactured by Toyobo Co., Ltd., product number "TN200)
- the temporary support 1 is generally used as a separator for double-sided adhesive tape or the like.
- the thickness of each temporary support is as shown in Tables 1 to 3 below.
- a tackifier resin emulsion an aqueous emulsion of a polymerized rosin ester having a softening point of 160 ° C., Arakawa Kagaku
- E-865NT a tackifier resin emulsion
- 10% by weight ammonia water as a pH adjuster and polyacrylic acid as a thickener manufactured by Toa Synthetic Co., Ltd., trade name "Aron B-500
- the pH was 7.2 and the viscosity was 10 Pa.
- an aqueous dispersion type acrylic pressure-sensitive adhesive composition obtained by -Adjusted to s to obtain an aqueous dispersion type acrylic pressure-sensitive adhesive composition. Then, the obtained water-dispersible acrylic pressure-sensitive adhesive composition was coated on a PET substrate (trade name "Lumilar S10” manufactured by Toray Industries, Inc.) having a thickness of 700 mm x 250 mm and a thickness of 25 ⁇ m with an applicator, and 2 at 100 ° C. It was dried for a minute to form an adhesive layer having a thickness of 40 ⁇ m, and an adhesive tape for evaluation of peelability was obtained.
- a PET substrate trade name "Lumilar S10” manufactured by Toray Industries, Inc.
- the filamentous adhesive could not be attached in a regular triangular shape even by increasing the load or thickening the filamentous adhesive.
- the thread-like adhesive body with a temporary support obtained by the above evaluation of drawability is placed on an acrylic plate so that the surface on the thread-like adhesive body side faces down, and the thread-like adhesive body is placed on an acrylic plate via the temporary support with a 2 kg roller. After one reciprocating crimping, the temporary support was peeled off under the conditions of a peeling angle of 90 ° and a peeling speed of about 50 mm / min.
- the transferability of the thread-like adhesive with the temporary support was evaluated according to the following criteria according to the state of the thread-like adhesive after that. The results are shown in Table 1. The transferability of the thread-like adhesive body 1 with a temporary support obtained by using the temporary support 1 was not evaluated.
- the filamentous adhesive could not be transferred to the acrylic plate.
- 2 Although the filamentous adhesive could be transferred to the acrylic plate, floating occurred and the shape of the equilateral triangle was broken. 3: Although the filamentous adhesive could be transferred to the acrylic plate, floating occurred, and there was a part where the surface of the filamentous adhesive on the acrylic plate side was not adhered to the acrylic plate.
- 4 The thread-like adhesive body could be transferred to the acrylic plate, and the entire surface of the thread-like adhesive body on the acrylic plate side was adhered to the acrylic plate.
- 5 The filamentous adhesive could be transferred to the acrylic plate without pressurization, and the entire surface of the filamentous adhesive on the acrylic plate side was adhered to the acrylic plate.
- the thread-like adhesive bodies 1 to 11 were attached to the temporary supports 1 to 11 in a regular triangular shape to obtain the thread-like adhesive bodies 1 to 11 with the temporary support.
- the filamentous adhesive can be attached to the adherend in a regular triangular shape.
- the thread-like adhesive body 2 to 11 with the temporary support When the transferability of the thread-like adhesive bodies 2 to 11 with the temporary support was actually evaluated, the thread-like adhesive body could be transferred to the adherend (acrylic plate). Among them, the filamentous adhesives 2 to 4 and 6 with a temporary support were particularly excellent in transferability.
- the filamentous adhesive could not be attached in the shape of a regular triangle. 2: Only the straight part of the thread-like adhesive body could be attached. 3: The thread-like adhesive body could be attached in a regular triangular shape (the corners were also attached). 4: The filamentous adhesive could be attached in a regular triangular shape, and even if the temporary support was bent, the filamentous adhesive was firmly attached and was strong in movement.
- the transferability was evaluated in the same manner as above, except that the peeling direction was the direction 5 (start point direction or end point direction) shown in FIG.
- the results are shown in Table 3.
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Abstract
Description
しかし、両面粘着テープは通常ある程度の幅を有しており、貼り合わせる物品の形状が複雑な場合や、接着領域の幅が細い場合には適さない。このような貼り合わせを実現する方法としては、細幅にカットされた両面粘着テープを用いる方法や、打ち抜き加工により所望の形状にカットされた両面粘着テープを用いる方法が考えられる。
例えば、特許文献1においてはカット性に優れた粘着フィルム、すなわち、カットされた際に粘着剤が糸をひくことが抑制された粘着フィルムが開示されている。
打ち抜き加工により所望の形状にカットされた両面粘着テープではこのような問題はないものの、加工に工数がかかる、加工により廃棄される部分が多いのでコストがかかる等の問題がある。
また、上記いずれの粘着テープでも製造工程において粘着剤層の切断を伴うが、粘着剤層が例えばフィラーなどの硬い粒子を含有する場合は、粘着剤層の切断が困難であるという問題もある。
しかしながら、貼付する形状が複雑な場合などは、貼付に高度な技術が必要であったり、貼付用の装置が必要であったりする場合がある。
本発明の糸状粘着体の貼付方法の一態様は、圧着後、糸状粘着体から仮支持体を剥離除去することをさらに含んでもよい。
本発明の糸状粘着体の貼付方法の一態様において、糸状粘着体から仮支持体をピールにより剥離除去してもよい。
本発明の糸状粘着体の貼付方法の一態様において、糸状粘着体は、糸状の芯材と、芯材の周面を被覆する粘着剤層を含んでもよい。
本発明の糸状粘着体の貼付方法の一態様において、仮支持体は、5%歪み応力が20N以上であってもよい。
本発明の糸状粘着体の貼付方法の一態様において、仮支持体の糸状粘着体が貼付される面は、下記ピール試験により測定されるピール接着力が0.30N/50mm以上であってもよい。
(ピール試験によるピール接着力の測定方法)
まず、冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行う。
次に、反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物0.1重量部を加える。さらに、系を60℃に保ちつつ、反応容器に、アクリル酸2-エチルへキシル98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム2重量部をイオン交換水30重量部に加えて乳化したモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させる。モノマーエマルションの滴下終了後、3時間系を60℃に保持し、系を室温まで冷却した後、10重量%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得る。その後、得られた水分散型アクリル系重合体に含まれるアクリル系重合体100重量部当たり、固形分基準で10重量部の粘着付与樹脂エマルション(軟化点160℃の重合ロジンエステルの水性エマルション)を加える。さらに、pH調整剤としての10重量%アンモニア水および増粘剤としてのポリアクリル酸を用いて、pHを7.2、粘度を10Pa・sに調整して、水分散型アクリル系粘着剤組成物を得る。
その後、得られた水分散型アクリル系粘着剤組成物を、700mm×250mm、厚み25μmのPET基材上にアプリケーターで塗工し、100℃で2分間乾燥して厚み40μmの粘着剤層を形成させ、剥離性評価用粘着テープを得る。
そして、両面粘着テープを用いて、仮支持体の糸状粘着体が貼付される面の反対側の面を、SUS板に貼り合わせ、その後、剥離性評価用粘着テープを50mm幅×100mm長さに切断し、仮支持体の糸状粘着体が貼付される面に貼付し、2kgローラーで一往復して圧着する。圧着から20分経過後に、剥離性評価用粘着テープを剥離角度180°、剥離速度300mm/分の条件で仮支持体からピール剥離してピール接着力を測定する。
本発明の糸状粘着体の貼付方法の一態様において、仮支持体の糸状粘着体が貼付される面の、ピール試験により測定されるピール接着力が、被着体の糸状粘着体が貼付される面の、ピール試験により測定されるピール接着力より小さくてもよい。
また、本発明の仮支持体付き糸状粘着体は、被着体に糸状粘着体を所望の形状で貼付するために用いる仮支持体付き糸状粘着体であって、
仮支持体と、仮支持体上に所望の形状を反転した形状の糸状粘着体とを備え、
仮支持体の糸状粘着体が貼付される面は、上記ピール試験により測定されるピール接着力が0.30N/50mm以上である。
本発明の仮支持体付き糸状粘着体の一態様において、糸状粘着体は、糸状の芯材と、芯材の周面を被覆する粘着剤層を含んでもよい。
また本発明の仮支持体付き糸状粘着体は、被着体に糸状粘着体を所望の形状で貼付するために用いる仮支持体付き糸状粘着体であって、仮支持体と、前記仮支持体上に前記所望の形状を反転した形状の糸状粘着体とを備え、前記仮支持体の前記糸状粘着体が貼付される面は、後述のピール試験により測定されるピール接着力が0.30N/50mm以上である。
以下、本発明の糸状粘着体の貼付方法、及び仮支持体付き糸状粘着体の実施形態について、詳細に説明する。
なお、本発明は、以下に説明する実施形態に限定されるものではない。また、図面において、同じ作用を奏する部材・部位には同じ符号を付して説明することがあり、重複する説明は省略または簡略化することがある。また、図面に記載の実施形態は、本発明を明瞭に説明するために模式化されており、実際の製品のサイズや縮尺を必ずしも正確に表したものではない。
まず、本実施形態における糸状粘着体について説明する。
糸状粘着体とは、糸状であり、その周面が粘着性を有する粘着体である。
糸状とは、長手方向の長さが幅方向の長さに対して十分に長く、長手方向に垂直な断面の形状(以下、「断面形状」ともいう)における短軸(断面形状の重心を通る軸のうち最短のもの)の長さに対する長軸(断面形状の重心を通る軸のうち最長のもの)の長さの割合(長軸/短軸)が、例えば200以下、好ましくは100以下、より好ましくは50以下、さらに好ましくは10以下、よりさらに好ましくは5以下、特に好ましくは3以下である形状であり、また、糸のように多様な方向、角度に曲げられうる状態であることを意味する。
また、芯材を備える糸状粘着体は、例えば芯材の表面に粘着剤組成物をディッピング、浸漬、塗布等により塗工し、必要に応じて加熱乾燥させることにより得ることができる。粘着剤組成物の塗布は、例えば、グラビアロールコーター、リバースロールコーター、キスロールコーター、ディップロールコーター、バーコーター、ナイフコーター、スプレーコーター等の慣用のコーターを用いて行うことができる。
芯材の断面形状は典型的には円形だが、円形の他にも、楕円形、多角形等、種々の形状をとりうる。
芯材は単一のフィラメントからなるモノフィラメントであってもよく、複数本のフィラメントからなるマルチフィラメントであってもよく、また、スパンヤーン、捲縮加工や嵩高加工等を施した一般的にテクスチャードヤーン、バルキーヤーン、ストレッチヤーンと称される加工糸、中空糸、あるいはこれらを撚り合わせる等して組み合わせた糸等であってもよい。
芯材の太さは特に限定されず、隙間の幅に応じて糸状粘着体の太さが適切になるように、粘着剤層の厚みとともに適宜調整すればよい。
芯材の材料としては例えば、レーヨン、キュプラ、アセテート、プロミックス、ナイロン、アラミド、ビニロン、ビニリデン、ポリ塩化ビニル、ポリエステル、アクリル、ポリエチレン(PE)、ポリプロピレン(PP)、エチレン・プロピレン共重合体やエチレン・酢酸ビニル共重合体等のポリオレフィン、ポリエチレンテレフタレート(PET)等のポリエステル、塩化ビニル樹脂、酢酸ビニル樹脂、ポリイミド樹脂、ポリアミド樹脂、フッ素樹脂、ポリウレタン、ポリクラール、ポリ乳酸等の各種高分子材料;天然ゴムやポリウレタン等の合成ゴム等の各種ゴム;ガラス、炭素材料、金属等の無機材料;綿、ウール等の天然材料;発泡ポリウレタン、発泡ポリクロロプレンゴム等の発泡体等が使用できる。
図1に、本実施形態における仮支持体付き糸状粘着体の概略斜視図を示す。
本実施形態における仮支持体付き糸状粘着体1は、仮支持体2に上記の糸状粘着体3を貼付して得られる。仮支持体の形状は特に限定されないが、例えば図1に示すようにフィルム状であることが好ましい。
以下、仮支持体上の糸状粘着体の形状について説明する。なお、以下の説明において糸状粘着体の形状とは、ある面(仮支持体、又は被着体の面)に貼付された糸状粘着体を、糸状粘着体が貼付された面側から観察した際の形状を意味する。
本実施形態の仮支持体付き糸状粘着体は、被着体に糸状粘着体を所望の形状で貼付するのに用いるが、貼付の際には後述するように仮支持体上の糸状粘着体を被着体に転写して貼付する。したがって、被着体に貼付される糸状粘着体の形状は、仮支持体付き糸状粘着体における糸状粘着体の形状を反転した形状になる。したがって、仮支持体に糸状粘着体を貼付して仮支持体付き糸状粘着体とする際には、仮支持体に糸状粘着体を所望の形状を反転した形状で貼付する。
仮支持体の貼付面の糸状粘着体に対する剥離性の指標としては、例えば、以下に記載のピール試験により測定されるピール接着力が挙げられる。当該ピール接着力が大きいほど、剥離性は小さくなる。
上記より、本実施形態における仮支持体の貼付面の当該ピール接着力は、0.30N/50mm以上が好ましく、0.50N/50mm以上がより好ましく、1N/50mm以上がさらに好ましく、2N/50mm以上が特に好ましい。
一方、仮支持体の糸状粘着体に対する剥離性が被着体の糸状粘着体に対する剥離性より小さいと、糸状粘着体を被着体に貼付した後に糸状粘着体から仮支持体を剥離除去するのが困難になる恐れがある。したがって、本実施形態に仮支持体の当該ピール接着力は、被着体の当該ピール接着力より小さいことが好ましい。例えば、本実施形態における仮支持体の貼付面の当該ピール接着力は、55N/50mm以下が好ましく、45N/50mm以下がより好ましく、35N/50mm以下がさらに好ましい。
当該ピール試験においては、まず剥離性評価用粘着テープを製造し、これを仮支持体に貼付し、ピール剥離して接着力(ピール接着力)を測定する。
剥離性評価用粘着テープの製造方法及びピール接着力の測定方法について以下に詳細に説明する。
まず、冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行う。
次に、反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物(重合開始剤)0.1重量部を加える。
さらに、系を60℃に保ちつつ、反応容器に、アクリル酸2-エチルへキシル98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン(連鎖移動剤)0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、商品名「KBM-503」)0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム(乳化剤)2重量部をイオン交換水30重量部に加えて乳化したモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させる。
モノマーエマルションの滴下終了後、系を3時間60℃に保持し、系を室温まで冷却した後、10重量%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得る。
その後、得られる水分散型アクリル系重合体に含まれるアクリル系重合体100重量部当たり、固形分基準で10重量部の粘着付与樹脂エマルション(軟化点160℃の重合ロジンエステルの水性エマルション、荒川化学工業株式会社製、商品名「E-865NT」)を加える。さらに、pH調整剤としての10重量%アンモニア水および増粘剤としてのポリアクリル酸(東亞合成株式会社製、商品名「アロンB-500」)を用いて、pHを7.2、粘度を10Pa・sに調整して、水分散型アクリル系粘着剤組成物を得る。
その後、得られた水分散型アクリル系粘着剤組成物を、700mm×250mm、厚み25μmのPET基材(東レ株式会社製 商品名「ルミラーS10」)上にアプリケーターで塗工し、100℃で2分間乾燥して厚み40μmの粘着剤層を形成させ、剥離性評価用粘着テープを得る。
両面粘着テープ(日東電工株式会社製、商品名「VR-5300」)を用いて、仮支持体の剥離性を評価する面の反対側の面を、SUS板に貼り合わせ、その後、剥離性評価用粘着テープを50mm幅×100mm長さに切断し、仮支持体の剥離性を評価する面に貼付し、2kgローラーで一往復して圧着する。圧着から20分経過後に、剥離性評価用粘着テープを剥離角度180°、剥離速度300mm/分の条件で仮支持体からピール剥離して接着力(ピール接着力)を測定する。
凹凸処理の方法としては、例えばエンボス加工、ブラスト加工等が挙げられる。また、バインダー樹脂と粒子とを含む組成物を仮支持体に塗布し、その後当該組成物を硬化させることによって仮支持体に凹凸面を形成してもよい。ほかにも公知の方法を用いることができ、例えば、スクリーン印刷やグラビア印刷、ナノインプリントによる転写等を用いてもよい。中でも特にエンボス加工が所望の剥離性を得られやすい点から好ましい。
剥離処理は、仮支持体に剥離処理剤を塗布することにより行うことができる。剥離処理剤としては任意の適切な剥離処理剤を採用し得る。例えば、シリコーン系剥離剤、フッ素系剥離剤、長鎖アルキル系剥離剤、低分子量ポリエチレン系剥離剤、低分子量ポリプロピレン系剥離剤、ゴム系ポリマー、リン酸エステル系界面活性剤などを用いることができる。
例えば、被着体の表面形状に凹凸があるような場合は、仮支持体が軟らかいと当該凹凸に沿って変形できるため、好ましい。一方、仮支持体に強度が求められる場合には仮支持体は硬いことが好ましい。
また、仮支持体の厚みも特に限定されず、所望の硬さ等に応じて適宜調整すればよい。
例えば、紙や樹脂フィルム、金属箔等に、必要に応じて凹凸処理や剥離処理等の表面処理を施したものを仮支持体として用いることができる。
樹脂フィルムを構成する樹脂としては、例えば、ポリエステル系樹脂、ポリオレフィン系樹脂、ポリアミド系樹脂、ポリイミド系樹脂、ポリフェニレンサルファイド系樹脂、ポリカーボネート系樹脂、ポリウレタン系樹脂、エチレン-酢酸ビニル系樹脂、ポリテトラフルオロエチレン等のフッ素系樹脂、ポリメチルメタクリレート等のアクリル系樹脂等を用いることができる。樹脂フィルムは、このような樹脂の1種類を単独で含む樹脂材料を用いて形成されたものであってもよく、2種以上がブレンドされた樹脂材料を用いて形成されたものであってもよい。また、樹脂フィルムは、無延伸であってもよく、延伸(一軸延伸または二軸延伸)されたものであってもよい。
これは、熱を加えることで、仮支持体の表面の成分分布が変化し、弾性率が変化し、タック性が増すからであると考えられる。
セパレーターは、糸状粘着体の被着体に貼付される面を保護するために設けられる。
温度23℃の室内で、アクリル製の台の上に被験物質(縦4cm×横4cm)を載置し、円筒状の圧子(SUS製、圧子面積:100mm2)を被験物質の中心部に対して垂直方向に圧縮速度0.1mm/minで押し付けながら圧縮応力を測定し、下記式から圧縮弾性率E(MPa)を算出する。
圧縮応力σ1:0.005(MPa)
圧縮応力σ2:0.01(MPa)
圧縮ひずみ値ε1:圧縮応力σ1における圧縮ひずみ値
圧縮ひずみ値ε2:圧縮応力σ2における圧縮ひずみ値
図2に、上記の仮支持体付き糸状粘着体1の糸状粘着体3側の面が被着体4に圧着された状態の概略斜視図を示す。本実施形態の糸状粘着体の貼付方法では、上記の仮支持体付き糸状粘着体1をこのように圧着することで、糸状粘着体3を被着体4に所望の形状で貼付(転写)する。
圧着の方法は被着体に糸状粘着体が接着されれば特に限定されず、例えば仮支持体を介してローラーや指により押圧すればよい。
このような特徴から、本実施形態の糸状粘着体の貼付方法は例えば、電線や光ファイバー等のケーブル、LEDファイバーライト、FBG(Fiber Bragg Gratings、ファイバブラッググレーティング)等の光ファイバセンサ、糸、紐、ワイヤ等の各種線材(線状部材)や、細幅の部材を、所望の形態で固定するための糸状粘着体の貼付方法として好適である。線材や細幅の部材を複雑な形状で他の部材に固定するような場合においても、本実施形態の糸状粘着体の貼付方法であれば、線材や細幅の部材の貼付される部材に、線材や細幅の部材の有すべき複雑な形状にあわせて、容易に糸状粘着体を貼付することができる。
また、本実施形態の糸状粘着体の貼付方法は例えば、一の物品を他の物品の表面に仮固定(仮止め)するための糸状粘着体の貼付方法としても好適である。例えば、衣服、靴、鞄、帽子等の繊維製品や皮革製品等を製造する際の仮固定(仮止め)用途の糸状粘着体の貼付方法として好適である。例えば、繊維製品や皮革製品を縫製する場合において、糸状粘着体により仮固定を行えば、縫製部分を避けて仮固定することが容易であり、粘着剤の針への付着を容易に防止できる。しかし、縫製される物品が複雑な形状であったり変形しやすかったりすると、糸状粘着体の貼付が容易ではない場合もある。このような場合であっても、本実施形態の糸状粘着体の貼付方法によれば容易に糸状粘着体を貼付することができる。
なお、上記において説明した用途はあくまで例示であり、本実施形態の糸状粘着体の貼付方法の適用される用途はこれらに限定されない。
(粘着剤層形成用の水分散型アクリル系粘着剤の調製)
冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行った。この反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物(重合開始剤)0.1重量部を加えた。系を60℃に保ちつつ、ここにモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させた。モノマーエマルションとしては、2-エチルヘキシルアクリレート98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン(連鎖移動剤)0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、商品名「KBM-503」)0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム(乳化剤)2重量部を、イオン交換水30重量部に加えて乳化したものを使用した。モノマーエマルションの滴下終了後、さらに3時間60℃に保持し、系を室温まで冷却した後、10%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得た。
上記アクリル系重合体エマルションに含まれるアクリル系重合体100重量部当たり、固形分基準で20重量部の粘着付与樹脂エマルション(荒川化学工業株式会社製、商品名「E-865NT」)を加えた。さらに、pH調整剤としての10質量%アンモニア水および増粘剤としてのポリアクリル酸(東亞合成株式会社製、商品名「アロンB-500」)を用いて、pHを7.2、粘度を10Pa・sに調整した。このようにして、粘着剤層用の水分散型アクリル系粘着剤を得た。
ポリエステル糸48本に150回/mの撚りをかけて芯材(繊度280dtex)を得た。
得られた芯材に、得られた水分散型アクリル系粘着剤を、得られる糸状粘着体における粘着剤の付着量が22mg/mとなるようにディッピングで塗工した後、80℃で5分間乾燥して粘着剤層を形成させ、糸状粘着体を得た。
以下に示す各仮支持体を用意した。
仮支持体1:シリコーン剥離処理されたPETフィルム(三菱ケミカル株式会社製、商品名「ダイヤホイルMRF」)
仮支持体2:シリコーンセパレーター(東洋紡株式会社製、品番「E7006」)
仮支持体3:シリコーンセパレーター(東洋紡株式会社製、品番「E7001」)
仮支持体4:ノンシリコーンセパレーター(東洋紡株式会社製、品番「TN100」)
仮支持体5:高密度ポリエチレンフィルム(三共ポリエチレン株式会社製)
仮支持体6a:ノンシリコーンセパレーター(東洋紡株式会社製、品番「TN200」)
仮支持体6b:ノンシリコーンセパレーター(東洋紡株式会社製、品番「TN200」)
仮支持体7:エンボス処理ポリウレタンフィルム(日本マタイ株式会社製、商品名「エスマーPX-II」)
仮支持体8:ポリエチレンフィルム(大倉工業株式会社製)
仮支持体9:東レ株式会社製、商品名「トレファンBO YT42」
仮支持体10:ポリエチレンからなるエンボスシート(梨地、大倉工業株式会社製)
仮支持体11:PETフィルム(東レ株式会社製、商品名「ルミラーS10」)
また、各仮支持体の厚みは、下記表1~3に示すとおりである。
<仮支持体の剥離性の評価>
以下に示すようにして剥離性評価用粘着テープを製造し、これを各例の仮支持体に貼付し、ピール剥離して接着力(ピール接着力)を測定した。
剥離性評価用粘着テープの製造方法及びピール接着力の測定方法について以下に詳細に説明する。
まず、冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行った。
次に、反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物(重合開始剤)0.1重量部を加えた。
さらに、系を60℃に保ちつつ、反応容器に、アクリル酸2-エチルへキシル98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン(連鎖移動剤)0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン(信越化学工業株式会社製、商品名「KBM-503」)0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム(乳化剤)2重量部をイオン交換水30重量部に加えて乳化したモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させた。
モノマーエマルションの滴下終了後、3時間系を60℃に保持し、系を室温まで冷却した後、10重量%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得た。
その後、得られる水分散型アクリル系重合体に含まれるアクリル系重合体100重量部当たり、固形分基準で10重量部の粘着付与樹脂エマルション(軟化点160℃の重合ロジンエステルの水性エマルション、荒川化学工業株式会社製、商品名「E-865NT」)を加えた。さらに、pH調整剤としての10重量%アンモニア水および増粘剤としてのポリアクリル酸(東亞合成株式会社製、商品名「アロンB-500」)を用いて、pHを7.2、粘度を10Pa・sに調整して、水分散型アクリル系粘着剤組成物を得た。
その後、得られた水分散型アクリル系粘着剤組成物を、700mm×250mm、厚み25μmのPET基材(東レ株式会社製 商品名「ルミラーS10」)上にアプリケーターで塗工し、100℃で2分間乾燥して厚み40μmの粘着剤層を形成させ、剥離性評価用粘着テープを得た。
両面粘着テープ(日東電工株式会社製、商品名「VR-5300」)を用いて、仮支持体の剥離性を評価する面の反対側の面を、SUS板に貼り合わせ、その後、剥離性評価用粘着テープを50mm幅×100mm長さに切断し、仮支持体の剥離性を評価する面に貼付し、2kgローラーで一往復して圧着した。圧着から20分経過後に、剥離性評価用粘着テープを剥離角度180°、剥離速度300mm/分の条件で仮支持体からピール剥離して接着力(ピール接着力)を測定した。測定結果を表1に示す。
各仮支持体のピール接着力を測定した面に、上記の通りに製造した糸状粘着体を手や棒で軽く押さえながら、一辺が60mmの正三角形状となるように貼付することを試み、以下の基準で評価した。結果を表1に示す。
2:荷重を強くする、又は糸状粘着体を太くすることによって、糸状粘着体を正三角形状で貼りつけることができた。
3:糸状粘着体を正三角形状で貼りつけることができた。
4:糸状粘着体を正三角形状で貼りつけることができ、仮支持体を曲げても糸状粘着体がしっかり貼りついており、動きに強かった。
上記の描画性の評価により得られた仮支持体付き糸状粘着体を、糸状粘着体側の面が下になるようにアクリル板に載置し、仮支持体を介して糸状粘着体を2kgローラーで1往復圧着し、その後仮支持体を剥離角度90°、剥離速度50mm/分程度の条件でピール剥離した。その後の糸状粘着体の状態に応じて、仮支持体付き糸状粘着体の転写性を以下の基準で評価した。結果を表1に示す。
なお、仮支持体1を用いて得られた仮支持体付き糸状粘着体1については、転写性の評価は行わなかった。
2:アクリル板に糸状粘着体を転写できたものの、浮きが発生し、正三角形の形が崩れていた。
3:アクリル板に糸状粘着体を転写できたものの、浮きが発生し、糸状粘着体のアクリル板側の面がアクリル板に接着していない箇所が部分的に存在した。
4:アクリル板に糸状粘着体を転写することができ、糸状粘着体のアクリル板側の面の全体がアクリル板に接着していた。
5:加圧なしでも、アクリル板に糸状粘着体を転写することができ、糸状粘着体のアクリル板側の面の全体がアクリル板に接着していた。
各仮支持体を幅10mm、長さ50mmに切断し、チャック間距離10mmでオートグラフ(島津製作所製、小型卓上試験機EXtest)にはさみ、200mm/分で引っ張ることによって、5%歪んだ時の応力を測定した。結果を表1に示す。
<仮支持体付き糸状粘着体の製造、及び描画性の評価>
糸状粘着体を手や棒で押さえなかったこと以外は、試験例1と同様にして、一辺が60mmの正三角形状となるように貼付することを試み、以下の基準で評価した。結果を表2に示す。
2:糸状粘着体の直線部のみを貼りつけることができた。
3:糸状粘着体を正三角形状で貼りつけることができた(角も貼りついた)。
4:糸状粘着体を正三角形状で貼りつけることができ、仮支持体を曲げても糸状粘着体がしっかり貼りついており、動きに強かった。
試験例1と同様にして、仮支持体付き糸状粘着体の転写性を評価した。結果を表2に示す。
<仮支持体付き糸状粘着体の製造、及び描画性の評価>
糸状粘着体を厚みが1/2になるように押さえつけたこと以外は、試験例1と同様に評価した。結果を表3に示す。
試験例1と同様にして製造した糸状粘着体3を厚みが1/2になるように押さえつけながら、図4に示すような長方形状となるように仮支持体2に貼付し、仮支持体付き糸状粘着体1を得た。得られた仮支持体付き糸状粘着体1を、糸状粘着体3側の面が下になるようにアクリル板に載置し、仮支持体2を介して糸状粘着体3を2kgローラーで1往復圧着し、その後仮支持体2を図4に示す方向6~8(角方向、辺方向)から剥離角度90°、剥離速度50mm/分程度の条件でピール剥離した。転写性を試験例1と同様の基準で評価した。結果を表3に示す。
2 仮支持体
3 糸状粘着体
4 被着体
5,6,7,8 剥離方向
Claims (9)
- 被着体に糸状粘着体を所望の形状で貼付する糸状粘着体の貼付方法であって、
仮支持体に前記糸状粘着体が前記所望の形状を反転した形状で貼付された仮支持体付き糸状粘着体の、前記糸状粘着体側の面を前記被着体に圧着することを含む糸状粘着体の貼付方法。 - 前記圧着後、前記糸状粘着体から前記仮支持体を剥離除去することをさらに含む、請求項1に記載の糸状粘着体の貼付方法。
- 前記糸状粘着体から前記仮支持体をピールにより剥離除去する、請求項2に記載の糸状粘着体の貼付方法。
- 前記糸状粘着体は、糸状の芯材と、前記芯材の周面を被覆する粘着剤層を含む、請求項1~3のいずれか1項に記載の糸状粘着体の貼付方法。
- 前記仮支持体は、5%歪み応力が20N以上である、請求項1~4のいずれか1項に記載の糸状粘着体の貼付方法。
- 前記仮支持体の前記糸状粘着体が貼付される面は、下記ピール試験により測定されるピール接着力が0.30N/50mm以上である、請求項1~5のいずれか1項に記載の糸状粘着体の貼付方法。
(ピール試験によるピール接着力の測定方法)
まず、冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行う。
次に、前記反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物0.1重量部を加える。さらに、系を60℃に保ちつつ、前記反応容器に、アクリル酸2-エチルへキシル98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム2重量部をイオン交換水30重量部に加えて乳化したモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させる。前記モノマーエマルションの滴下終了後、3時間系を60℃に保持し、系を室温まで冷却した後、10重量%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得る。その後、得られた水分散型アクリル系重合体に含まれるアクリル系重合体100重量部当たり、固形分基準で10重量部の粘着付与樹脂エマルション(軟化点160℃の重合ロジンエステルの水性エマルション)を加える。さらに、pH調整剤としての10重量%アンモニア水および増粘剤としてのポリアクリル酸を用いて、pHを7.2、粘度を10Pa・sに調整して、水分散型アクリル系粘着剤組成物を得る。
その後、得られた水分散型アクリル系粘着剤組成物を、700mm×250mm、厚み25μmのPET基材上にアプリケーターで塗工し、100℃で2分間乾燥して厚み40μmの粘着剤層を形成させ、剥離性評価用粘着テープを得る。
そして、両面粘着テープを用いて、前記仮支持体の前記糸状粘着体が貼付される面の反対側の面を、SUS板に貼り合わせ、その後、前記剥離性評価用粘着テープを50mm幅×100mm長さに切断し、前記仮支持体の前記糸状粘着体が貼付される面に貼付し、2kgローラーで一往復して圧着する。圧着から20分経過後に、前記剥離性評価用粘着テープを剥離角度180°、剥離速度300mm/分の条件で前記仮支持体からピール剥離してピール接着力を測定する。 - 前記仮支持体の前記糸状粘着体が貼付される面の、前記ピール試験により測定されるピール接着力が、前記被着体の前記糸状粘着体が貼付される面の、前記ピール試験により測定されるピール接着力より小さい、請求項1~6のいずれか1項に記載の糸状粘着体の貼付方法。
- 被着体に糸状粘着体を所望の形状で貼付するために用いる仮支持体付き糸状粘着体であって、
仮支持体と、前記仮支持体上に前記所望の形状を反転した形状の糸状粘着体とを備え、
前記仮支持体の前記糸状粘着体が貼付される面は、下記ピール試験により測定されるピール接着力が0.30N/50mm以上である、仮支持体付き糸状粘着体。
(ピール試験によるピール接着力の測定方法)
まず、冷却管、窒素導入管、温度計および攪拌機を備えた反応容器に、イオン交換水40重量部を入れ、窒素ガスを導入しながら60℃で1時間以上攪拌して窒素置換を行う。
次に、前記反応容器に、2,2’-アゾビス[N-(2-カルボキシエチル)-2-メチルプロピオンアミジン]n水和物0.1重量部を加える。さらに、系を60℃に保ちつつ、前記反応容器に、アクリル酸2-エチルへキシル98重量部、アクリル酸1.25重量部、メタクリル酸0.75重量部、ラウリルメルカプタン0.05重量部、γ-メタクリロキシプロピルトリメトキシシラン0.02重量部およびポリオキシエチレンラウリル硫酸ナトリウム2重量部をイオン交換水30重量部に加えて乳化したモノマーエマルションを4時間かけて徐々に滴下して乳化重合反応を進行させる。前記モノマーエマルションの滴下終了後、3時間系を60℃に保持し、系を室温まで冷却した後、10重量%アンモニア水の添加によりpHを7に調整して、アクリル系重合体エマルション(水分散型アクリル系重合体)を得る。その後、得られた水分散型アクリル系重合体に含まれるアクリル系重合体100重量部当たり、固形分基準で10重量部の粘着付与樹脂エマルション(軟化点160℃の重合ロジンエステルの水性エマルション)を加える。さらに、pH調整剤としての10重量%アンモニア水および増粘剤としてのポリアクリル酸を用いて、pHを7.2、粘度を10Pa・sに調整して、水分散型アクリル系粘着剤組成物を得る。
その後、得られた水分散型アクリル系粘着剤組成物を、700mm×250mm、厚み25μmのPET基材上にアプリケーターで塗工し、100℃で2分間乾燥して厚み40μmの粘着剤層を形成させ、剥離性評価用粘着テープを得る。
そして、両面粘着テープを用いて、前記仮支持体の前記糸状粘着体が貼付される面の反対側の面を、SUS板に貼り合わせ、その後、前記剥離性評価用粘着テープを50mm幅×100mm長さに切断し、前記仮支持体の前記糸状粘着体が貼付される面に貼付し、2kgローラーで一往復して圧着する。圧着から20分経過後に、前記剥離性評価用粘着テープを剥離角度180°、剥離速度300mm/分の条件で前記仮支持体からピール剥離してピール接着力を測定する。 - 前記糸状粘着体は、糸状の芯材と、前記芯材の周面を被覆する粘着剤層を含む、請求項8に記載の仮支持体付き糸状粘着体。
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| US17/764,034 US12331222B2 (en) | 2019-09-27 | 2020-09-23 | Method for applying a threadlike adhesive body, and temporary-support-supported threadlike adhesive body |
| EP20868403.5A EP4036183A4 (en) | 2019-09-27 | 2020-09-23 | METHOD FOR BONDING A THINAL-SHAPED ADHESIVE BODY AND THILAR-SHAPED ADHESIVE BODY WITH A TEMPORARY SUPPORT |
| CN202080067017.2A CN114466910A (zh) | 2019-09-27 | 2020-09-23 | 丝状粘合体的贴附方法及带有临时支撑体的丝状粘合体 |
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| JP7779647B2 (ja) | 2025-12-03 |
| CN114466910A (zh) | 2022-05-10 |
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| US20220332987A1 (en) | 2022-10-20 |
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| EP4036183A1 (en) | 2022-08-03 |
| US12331222B2 (en) | 2025-06-17 |
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