CN105378014B - Adhesive sheet - Google Patents
Adhesive sheet Download PDFInfo
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- CN105378014B CN105378014B CN201480038702.7A CN201480038702A CN105378014B CN 105378014 B CN105378014 B CN 105378014B CN 201480038702 A CN201480038702 A CN 201480038702A CN 105378014 B CN105378014 B CN 105378014B
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- Prior art keywords
- pressure
- sensitive adhesive
- adhesive sheet
- adhesive layer
- styrene
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides a pressure-sensitive adhesive sheet which does not require heat treatment, ultraviolet treatment or other treatment after the pressure-sensitive adhesive sheet is bonded to an adherend, can exhibit sufficient adhesiveness, and has excellent moisture resistance. The pressure-sensitive adhesive sheet of the present invention is characterized by having a pressure-sensitive adhesive layer containing a base polymer and a layered silicate, wherein the base polymer is a polyolefin resin. The adhesive sheet preferably has an adhesive force of 3.0gf/25mm or more and a transmittance of 80% or more.
Description
Technical Field
The present invention relates to an adhesive sheet. More specifically, the present invention relates to an adhesive sheet having excellent moisture resistance.
Background
Conventionally, it has been known to use an epoxy-curable resin as a moisture-proof adhesive or binder (see patent documents 1 and 2). However, epoxy-curable resins require curing treatment such as heat treatment or ultraviolet treatment (UV treatment) after bonding in order to secure adhesive strength, and are difficult to use for materials that do not resist heat or ultraviolet rays; further, there is a problem in that the curing conditions are alleviated and the adhesive strength is ensured.
In recent years, in the field of moisture-proof pressure-sensitive adhesive sheets, higher levels of moisture resistance have been required.
Documents of the prior art
Patent document
Patent document 1: japanese patent application laid-open No. 2010-126699
Patent document 2: japanese patent laid-open publication No. 2012-151109
Disclosure of Invention
Problems to be solved by the invention
Accordingly, an object of the present invention is to provide a pressure-sensitive adhesive sheet which does not require a heat treatment, an ultraviolet treatment or the like after bonding the pressure-sensitive adhesive sheet to an adherend, can exhibit sufficient adhesiveness, and is excellent in moisture resistance.
Means for solving the problems
As a result of intensive studies, the present inventors have found that, in a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer, when a base polymer contained in the pressure-sensitive adhesive layer is a polyolefin-based resin and a layer silicate is contained in the pressure-sensitive adhesive layer, a pressure-sensitive adhesive layer which does not require a curing treatment (treatment after bonding the pressure-sensitive adhesive sheet to an adherend) and has excellent moisture resistance can be obtained, and have completed the present invention.
That is, the present invention provides a pressure-sensitive adhesive sheet comprising a pressure-sensitive adhesive layer containing a base polymer and a layered silicate,
The base polymer is a polyolefin resin.
In the adhesive sheet, the adhesive force is preferably 3.0gf/25mm or more, and the transmittance is preferably 80% or more.
In the pressure-sensitive adhesive sheet, the moisture permeability is preferably 125g/m, which is determined as follows2Less than day;
Moisture permeability: the measurement sample obtained by bonding a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer thickness of 35 μm to a triacetylcellulose film (thickness: 25 μm) was measured by a moisture permeability test method (cup method) under the following conditions,
Measuring temperature: 40 deg.C
Relative humidity: 90 percent of
Measuring time: for 24 hours.
The polyolefin resin preferably has at least one functional group selected from the group consisting of a hydroxyl group, an amino group, an epoxy group, a carboxyl group, an acid anhydride group, and a silyl group in the main chain.
the adhesive layer preferably has a crosslinked structure.
effects of the invention
The pressure-sensitive adhesive sheet of the present invention has the above-described structure, and therefore can exhibit sufficient adhesiveness and is excellent in moisture resistance. Further, after the pressure-sensitive adhesive sheet is bonded to an adherend, no treatment such as heat treatment or ultraviolet treatment is required.
Detailed Description
[ adhesive sheet ]
The adhesive sheet of the present invention has an adhesive layer containing a base polymer and a layered silicate, wherein the base polymer is a polyolefin resin. That is, the adhesive sheet of the present invention preferably has at least a polyolefin-based adhesive layer containing a layered silicate as an adhesive layer. In the present specification, the above-mentioned "pressure-sensitive adhesive layer containing a base polymer and a layered silicate, the base polymer being a polyolefin-based resin" may be referred to as "pressure-sensitive adhesive layer a".
The pressure-sensitive adhesive sheet of the present invention may have a layer formed of a substrate, a pressure-sensitive adhesive layer (other pressure-sensitive adhesive layer) other than the pressure-sensitive adhesive layer a, and other layers (for example, an intermediate layer, an undercoat layer, and the like) in addition to the pressure-sensitive adhesive layer a. The pressure-sensitive adhesive layer surface (pressure-sensitive adhesive surface) of the pressure-sensitive adhesive sheet of the present invention may be protected by a release liner.
In the present specification, the term "adhesive sheet" also includes the term "adhesive tape". That is, in the present specification, the pressure-sensitive adhesive sheet may be a pressure-sensitive adhesive sheet having a tape-like (wound body) form. In the present specification, a composition used for forming the pressure-sensitive adhesive layer a may be referred to as "pressure-sensitive adhesive composition a". The adhesive composition is a composition for forming an adhesive layer, and also includes the meaning of the composition for forming an adhesive.
The pressure-sensitive adhesive sheet of the present invention may be a pressure-sensitive adhesive sheet having a substrate (substrate-attached pressure-sensitive adhesive sheet) or a pressure-sensitive adhesive sheet having no substrate (substrate-free pressure-sensitive adhesive sheet). Examples of the pressure-sensitive adhesive sheet of the present invention include: (1) an adhesive sheet comprising only the adhesive layer a and no substrate (a substrate-free double-sided adhesive sheet comprising only the adhesive sheet a); (2) pressure-sensitive adhesive sheets (substrate-attached one-sided pressure-sensitive adhesive sheets, substrate-attached double-sided pressure-sensitive adhesive sheets) having a pressure-sensitive adhesive layer a on at least one surface side (both surfaces or one surface side) of a substrate, and the like. When the pressure-sensitive adhesive sheet of the present invention is a double-sided pressure-sensitive adhesive sheet, the pressure-sensitive adhesive sheet of the present invention may have a form in which both pressure-sensitive adhesive surfaces are provided by the pressure-sensitive adhesive layer a, or may have a form in which one pressure-sensitive adhesive surface is provided by the pressure-sensitive adhesive layer a and the other pressure-sensitive adhesive surface is provided by another pressure-sensitive adhesive layer (a pressure-sensitive adhesive layer other than the pressure-sensitive adhesive layer a).
(adhesive layer A)
The adhesive sheet of the present invention has at least an adhesive layer a. The adhesive layer a contains a polyolefin-based resin as a base polymer. The pressure-sensitive adhesive layer a contains at least a layered silicate as a component other than the base polymer.
The proportion of the base polymer in the pressure-sensitive adhesive layer a is not particularly limited, and is preferably 20% by weight or more, more preferably 25% by weight or more, and further preferably 30% by weight or more, relative to the total amount (total weight, 100% by weight) of the pressure-sensitive adhesive layer a, from the viewpoint of obtaining sufficient adhesiveness.
In the adhesive sheet of the present invention, the base polymer in the adhesive layer a is a polyolefin resin. The pressure-sensitive adhesive layer a has sufficient adhesiveness and excellent moisture resistance because it contains a polyolefin resin as a base polymer. The pressure-sensitive adhesive layer a may contain a resin other than the polyolefin resin within a range not to impair the effects of the present invention. For example, the present invention may include, within a range not impairing the effects of the present invention: acrylic resins, vinyl alkyl ether resins, silicone resins, polyester resins, polyamide resins, polyurethane resins, fluorine-containing resins, epoxy resins, and the like. The polyolefin-based resin as the base polymer may be used alone or in combination of two or more.
The polyolefin-based resin as the base polymer is a polymer having a constituent unit derived from an olefin. The "olefin" also includes an aromatic vinyl compound such as styrene. The polyolefin-based resins may be used alone or in combination of two or more.
Examples of the polyolefin-based resin include: an alpha-olefin homopolymer formed from a monomer selected from the group consisting of ethylene, propylene, 1-butene, 2-methylpropene, 1-hexene and alpha-olefin. The α -olefin is not particularly limited, and examples thereof include: 1-pentene, 2-methyl-1-butene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1-heptene, 1-octene, 1-decene, 1-dodecene, etc.
Specific examples of the polyolefin-based resin include: polyethylene, polypropylene, poly-1-butene, polyisobutylene, and the like.
Further, examples of the polyolefin-based resin include: an alpha-olefin copolymer formed from at least two monomers selected from the group consisting of ethylene, propylene and alpha-olefins. More specifically, there may be mentioned: copolymers containing ethylene as a main monomer (ethylene-based α -olefin copolymers), copolymers containing propylene as a main monomer (propylene-based α -olefin copolymers), and the like. The α -olefin copolymer may be any of a random copolymer, a block copolymer, and a graft copolymer.
Further, as the polyolefin-based resin, there may be mentioned: a hydrogenated product of a block copolymer comprising block a and block B (sometimes referred to as "hydrogenated TPE"); of these, block a mainly contains a constituent unit derived from an aromatic vinyl compound (hereinafter, sometimes referred to as "aromatic vinyl compound unit"), and block B contains a constituent unit derived from isoprene (hereinafter, sometimes referred to as "isoprene unit") and a constituent unit derived from 1, 3-butadiene (hereinafter, sometimes referred to as "1, 3-butadiene unit").
further, the polyolefin-based resin may include: styrenic thermoplastic elastomers. Examples of the styrene-based thermoplastic elastomer include: styrene AB type diblock copolymers (diblock copolymers) such as styrene-butadiene copolymers (SB), styrene-isoprene copolymers (SI), and styrene-butylene copolymers; styrene-based ABA type block copolymers (triblock copolymers) such as styrene-butadiene-styrene copolymers (SBS), styrene-isoprene-styrene copolymers (SIS), and styrene-butylene-styrene copolymers; styrene ABAB type block copolymers (tetrablock copolymers) such as styrene-butadiene-styrene-butadiene copolymers (SBSB) and styrene-isoprene-styrene-isoprene copolymers (SISI); styrene ABABABA type block copolymers (pentablock copolymers) such as styrene-butadiene-styrene copolymers (SBSBS), styrene-isoprene-styrene copolymers (SISIS); a multiblock copolymer having these constituent units; styrene-butadiene copolymers; styrene-isoprene random copolymers, and the like.
Further, as the styrene-based thermoplastic elastomer, preferred are: a substance obtained by hydrogenating an olefinic double bond. Examples of such hydrides include: hydrogenated products of AB type diblock copolymers such as styrene-ethylene-butylene copolymer (SEB) and styrene-ethylene-propylene copolymer (SEP); hydrogenated products of ABA type triblock copolymers or ABAB type tetrablock copolymers such as styrene-ethylene-butylene copolymers-styrene (SEBS), styrene-ethylene-propylene copolymers-styrene (SEPS), styrene-ethylene-butylene copolymers-styrene-ethylene-butylene copolymers (sebsebseb); styrene-ethylene-butene random copolymer (HSBR).
Further, as the above-mentioned styrene-based thermoplastic elastomer, there can be also mentioned: styrene random copolymers such as styrene-butadiene rubber (SBR), ABC type styrene-olefin crystal block copolymers such as styrene-ethylene-butylene copolymer-olefin crystal (SEBC); and hydrides thereof.
Further, the polyolefin-based resin may include: a polyolefin resin having a hydroxyl group in the main chain. Examples of such polyolefin-based resins having hydroxyl groups in the main chain include: polyethylene polyols, polypropylene polyols, polybutadiene polyols, hydrogenated polybutadiene polyols, polyisoprene polyols, hydrogenated polyisoprene polyols, and the like.
In particular, the polyolefin-based resin is preferably a polyolefin-based resin or a hydrogenated polyolefin-based resin containing no double bond in the main chain thereof, from the viewpoint of weather resistance and moisture permeability of the pressure-sensitive adhesive layer.
In addition, the polyolefin-based resin preferably has at least one functional group selected from the group consisting of a hydroxyl group (hydroxyl group), an amino group, an epoxy group, a carboxyl group, an acid anhydride group, and a silyl group in the main chain, from the viewpoint of easily obtaining a pressure-sensitive adhesive layer having a crosslinked structure and from the viewpoint of easily obtaining a pressure-sensitive adhesive layer having good thermal stability. For example, the polyolefin resin is preferably a polyolefin resin having a functional group such as a hydroxyl group in the main chain.
The adhesive layer a of the adhesive sheet of the present invention contains the base polymer and at least a layer silicate. The layered silicate is a flat plate-like substance having a structure in which silicates are layered via ions. The pressure-sensitive adhesive layer a of the pressure-sensitive adhesive sheet of the present invention contains the base polymer and also contains a layered silicate, and therefore can further reduce the moisture permeability. This is presumably because the layered silicate itself is not a substance that transmits water vapor, and the layered silicate contained in the pressure-sensitive adhesive layer blocks the passage of water vapor when water vapor attempts to pass through the pressure-sensitive adhesive layer, and causes the passage of water vapor to be lengthened or narrowed, thereby preventing the passage of water vapor through the pressure-sensitive adhesive layer.
The layered silicate is not particularly limited, and examples thereof include: montmorillonite, hectorite, saponite, sauconite, beidellite, stevensite, nontronite, volkonskoite, sauconite, magadite, hectorite, kenyaite, chlorite, phlogopite, lepidolite, muscovite, biotite, paragonite, margarite, taeniolite, tetrasilicite, trioctahedral vermiculite, dioctahedral vermiculite, muscovite, biotite, lepidolite, chloromagnite, barium iron muscovite, and the like. The layered silicate may be used alone or in combination of two or more.
The surface of the layered silicate is preferably subjected to an organizing treatment. When the layer silicate is subjected to an organizing treatment, the base polymer of the pressure-sensitive adhesive layer a is more likely to be compatible with each other, and the layer silicate is more likely to be dispersed in the pressure-sensitive adhesive layer a. Therefore, the moisture resistance of the pressure-sensitive adhesive layer a can be further improved, and variation in moisture resistance due to position difference in the pressure-sensitive adhesive layer a can be suppressed, so that uniform moisture resistance can be easily obtained. In addition, the transparency of the adhesive layer a can be further improved.
Such an organizing treatment is not particularly limited, and examples thereof include: treatment with alkylammonium, treatment with quaternary ammonium, and the like. The organic treatment may be performed a plurality of times.
The content of the layered silicate in the pressure-sensitive adhesive layer a of the pressure-sensitive adhesive sheet of the present invention is not particularly limited, but is preferably 1 to 50 parts by weight, more preferably 2 to 40 parts by weight, and still more preferably 3 to 30 parts by weight, based on 100 parts by weight of the base polymer in the pressure-sensitive adhesive layer a.
The pressure-sensitive adhesive layer a preferably contains a tackifier resin from the viewpoint of obtaining sufficient adhesiveness. The tackifier resin is not particularly limited, and examples thereof include: rosin, rosin derivative resins, polyterpene resins, petroleum resins, coumarone-indene resins, styrene resins, phenol resins, xylene resins, and the like. The tackifier resins may be used alone or in combination of two or more.
In particular, the above-mentioned tackifier resin is preferably a hydrogenated tackifier resin from the viewpoint of compatibility with the base polymer and moisture permeability. The hydrogenated tackifier resin is not particularly limited, and examples thereof include: hydrogenated derivatives (hydrogenated rosin resins, hydrogenated petroleum resins, hydrogenated terpene resins, etc.) of tackifying resins such as rosin resins, petroleum resins, terpene resins, coumarone-indene resins, styrene resins, alkylphenol resins, xylene resins, etc. Examples of the hydrogenated rosin-based tackifier resin include: modified rosin obtained by modifying unmodified rosin (raw rosin) such as gum rosin, wood rosin, tall oil rosin, etc. by hydrogenation.
The softening point of the tackifier resin is not particularly limited, and is, for example, preferably 80 to 200 ℃ and more preferably 90 to 200 ℃. When the softening point of the tackifier resin is within this range, the cohesive force is further improved.
The content of the tackifier resin in the pressure-sensitive adhesive layer a of the pressure-sensitive adhesive sheet of the present invention is not particularly limited, and is preferably 0.1 to 50 parts by weight, more preferably 0.5 to 30 parts by weight, based on 100 parts by weight of the base polymer in the pressure-sensitive adhesive layer a.
In addition, the first and second substrates are,from the viewpoint of obtaining a crosslinked structure, the pressure-sensitive adhesive layer a preferably contains a crosslinking agent. The crosslinking agent is not particularly limited, and examples thereof include: epoxy crosslinking agent, isocyanate crosslinking agent, polysiloxane crosslinking agent,oxazoline crosslinking agents, aziridine crosslinking agents, silane crosslinking agents, alkyl etherified melamine crosslinking agents, metal chelate crosslinking agents, and the like. The crosslinking agent may be used alone or in combination of two or more.
Among them, the crosslinking agent is preferably an epoxy crosslinking agent or an isocyanate crosslinking agent. In particular, when the base polymer of the pressure-sensitive adhesive layer a is a polyolefin resin having hydroxyl groups in the main chain, an isocyanate-based crosslinking agent is preferable.
Examples of the isocyanate-based crosslinking agent include: toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, tetramethylxylylene diisocyanate, naphthalene diisocyanate, triphenylmethane triisocyanate, polymethylene polyphenyl isocyanates, and adducts thereof with polyols such as trimethylolpropane. In addition, there can be enumerated: examples of the compound having at least one isocyanate group and at least one unsaturated bond in one molecule include 2-isocyanatoethyl (meth) acrylate.
Examples of the epoxy crosslinking agent include: bisphenol a, epichlorohydrin-type epoxy resins, ethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerol triglycidyl ether, 1, 6-hexanediol diglycidyl ether, trimethylolpropane triglycidyl ether, diglycidylaniline, diaminoglycidylamine, N '-tetraglycidylmethyldimethylamine, and 1, 3-bis (N, N' -diaminoglycidylaminomethyl) cyclohexane.
The content of the crosslinking agent in the pressure-sensitive adhesive layer a of the pressure-sensitive adhesive sheet of the present invention is not particularly limited, but is preferably 0.01 to 80 parts by weight, more preferably 0.1 to 50 parts by weight, based on 100 parts by weight of the base polymer in the pressure-sensitive adhesive layer a.
The pressure-sensitive adhesive layer a may contain additives according to the use and the like within a range not to impair the effects of the present invention. Examples of such additives include: dispersants, surfactants, silane coupling agents, plasticizers, chain transfer agents, anti-aging agents, softeners, antioxidants, ultraviolet absorbers, antistatic agents, stabilizers, colorants (pigments, dyes, etc.), and the like. The additives may be used alone or in combination of two or more.
The adhesive layer a of the adhesive sheet of the present invention is formed from an adhesive composition a. The adhesive composition a is a composition for forming the adhesive layer a, and preferably contains at least the base polymer and the layered silicate. The adhesive composition a is not particularly limited, and can be obtained by mixing the base polymer, the layered silicate, a diluting solvent, and the like.
The viscosity of the pressure-sensitive adhesive composition a is not particularly limited, but is preferably 0.1 to 100Pa · s, more preferably 0.5 to 50Pa · s, from the viewpoints of workability, handling property, easiness in forming a uniform pressure-sensitive adhesive layer, and dispersibility of the layered silicate. In the present specification, the viscosity means a viscosity measured using a BH viscometer as a spindle: rotor No.5, number of revolutions: 10rpm, measurement temperature: viscosity measured at 30 ℃.
The viscosity of the pressure-sensitive adhesive composition a can be adjusted by blending various polymer components such as an acrylic rubber and a tackifier.
The adhesive layer a is formed by forming the adhesive composition a into a layer and curing it. For example, the adhesive composition layer is formed by obtaining an adhesive composition layer from the adhesive composition a and heat-drying the adhesive composition layer (for example, heat-treating at a temperature of 80 to 140 ℃ for 1 to 10 minutes).
The thickness of the pressure-sensitive adhesive layer a is not particularly limited, but is preferably 5 μm to 200 μm, and more preferably 10 μm to 100 μm from the viewpoint of adhesion reliability.
The adhesive layer a of the adhesive sheet of the present invention preferably has a crosslinked structure. When the adhesive layer a has a crosslinked structure, the thermal stability of the adhesive layer can be further improved. For example, even when used in a high-temperature environment (for example, in a temperature environment of 80 to 100 ℃), the occurrence of problems such as the flow of the adhesive and the peeling thereof can be effectively suppressed. The crosslinked structure can be obtained by using a crosslinking agent, for example.
(substrate)
As described above, the adhesive sheet of the present invention may be a substrate-attached adhesive sheet having at least a substrate and the adhesive layer a. The substrate used in such a substrate-attached pressure-sensitive adhesive sheet is not particularly limited, and preferable examples thereof include: plastic substrates (polymer substrates). The substrate may be a single-layer substrate or may have a laminated structure of two or more layers.
The material constituting the plastic substrate is not particularly limited, and examples thereof include: polyesters such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, and polybutylene naphthalate; polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers; polyvinyl alcohol; polyvinylidene chloride; polyvinyl chloride; vinyl chloride-vinyl acetate copolymers; polyvinyl acetate; a polyamide; a polyimide; celluloses such as triacetyl cellulose and diacetyl cellulose; a fluorine-containing resin; a polyether; a polyether amide; polyether ether ketone; polyphenylene sulfide; styrene resins such as polystyrene; a polycarbonate; polyether sulfone; acrylic resins such as polymethyl methacrylate. The above materials may be used alone or in combination of two or more.
Among them, the material constituting the plastic substrate is preferably polyester, cellulose, acrylic resin, or the like, and more preferably polyethylene terephthalate (PET), triacetyl cellulose (TAC), or polymethyl methacrylate (PMMA), from the viewpoint of a good balance among strength, handling properties (workability), cost, dimensional stability, and anchoring force. That is, the substrate is preferably a polyethylene terephthalate substrate, a triacetylcellulose substrate, or a polymethyl methacrylate substrate.
The substrate may be surface-treated as necessary. For example, the plastic substrate as the substrate can be controlled in deformability by a stretching treatment (uniaxial stretching or biaxial stretching) or the like. In addition, the surface of the substrate may be subjected to conventional surface treatment such as chromic acid treatment, exposure to ozone, exposure to flame, exposure to high-voltage electric shock, oxidation treatment by a chemical or physical method such as ionizing radiation treatment, or the like, in order to improve adhesion to the adhesive layer. Further, primer treatment for improving adhesion with the adhesive layer may be performed.
In addition, the substrate may be subjected to a hard coating treatment from the viewpoint of improving the scratch resistance (scratch resistance) of the surface. When such a hard coat treatment is performed, the protective function can be further improved when the hard coat treatment is used for surface protection. In addition, the base material may be subjected to antistatic treatment from the viewpoint of suppressing generation of static electricity.
The substrate may be one having one surface subjected to primer treatment for improving adhesion to the pressure-sensitive adhesive layer and the other surface subjected to hard coat treatment, for example.
(Release liner)
As described above, the adhesive sheet of the present invention may be provided with a release liner for protecting the adhesive surface. The release liner is not particularly limited, and a known or conventional release liner can be used. For example, the release liner preferably includes: polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT); olefin resins containing α -olefins as monomer components, such as Polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), ethylene-propylene copolymers, and ethylene-vinyl acetate copolymers (EVA); polyvinyl chloride (PVC); vinyl acetate resin; polycarbonate (PC); polyphenylene Sulfide (PPS); polyamides (nylons); amide resins such as wholly aromatic polyamide (aramid); a polyimide resin; polyetheretherketone (PEEK); olefin resins such as Polyethylene (PE) and polypropylene (PP); and a plastic film made of a fluororesin such as polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, a tetrafluoroethylene-hexafluoropropylene copolymer, a chlorofluoroethylene-vinylidene fluoride copolymer, or the like.
Further, examples of the release liner include: a release liner having a release layer (release treatment layer) on at least one surface of a release liner substrate, a low-adhesiveness release liner containing a fluoropolymer, a low-adhesiveness release liner containing a nonpolar polymer, and the like. Further, there can be enumerated: a release liner substrate without a release layer (i.e., the release liner substrate itself). The fluoropolymer is not particularly limited, and examples thereof include: polytetrafluoroethylene, polychlorotrifluoroethylene, polyvinyl fluoride, polyvinylidene fluoride, tetrafluoroethylene-hexafluoropropylene copolymer, chlorofluoroethylene-vinylidene fluoride copolymer, and the like. The nonpolar polymer is not particularly limited, and examples thereof include: olefin resins such as Polyethylene (PE) and polypropylene (PP). Among them, a release liner having a release layer on at least one surface of a release liner substrate, a release liner substrate having no release layer (i.e., the release liner substrate itself) is preferably used.
The release liner substrate is not particularly limited, and examples thereof include a plastic film. Examples of such plastic films include: polyester resins such as polyethylene terephthalate (PET), polyethylene naphthalate (PEN), and polybutylene terephthalate (PBT); olefin resins containing α -olefins as monomer components, such as Polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), ethylene-propylene copolymers, and ethylene-vinyl acetate copolymers (EVA); polyvinyl chloride (PVC); vinyl acetate resin; polycarbonate (PC); polyphenylene Sulfide (PPS); polyamides (nylons); amide resins such as wholly aromatic polyamide (aramid); a polyimide resin; and a plastic film made of polyether ether ketone (PEEK). Among them, from the viewpoints of processability, availability, handleability, dust resistance, cost, and the like, a plastic film made of a polyester resin is preferable, and a PET film is more preferable.
the release agent constituting the release layer is not particularly limited, and examples thereof include: silicone release treating agents, fluorine-containing release treating agents, long chain alkyl release treating agents, molybdenum sulfide and other release treating agents. Among them, silicone-based release treatment agents are preferred from the viewpoint of release control and stability over time. The release treatment agent may be used alone or in combination of two or more.
The release liner can be produced by a known and conventional method. The thickness of the release liner is not particularly limited.
(adhesive sheet)
The method for producing the pressure-sensitive adhesive sheet of the present invention is not particularly limited, and a known forming method can be used. For example, when the pressure-sensitive adhesive sheet of the present invention is a substrate-attached pressure-sensitive adhesive sheet, the pressure-sensitive adhesive layer a may be formed from the pressure-sensitive adhesive composition a on at least one surface side of the substrate. In the case where the pressure-sensitive adhesive sheet of the present invention is a substrate-less pressure-sensitive adhesive sheet including only the pressure-sensitive adhesive layer a, the pressure-sensitive adhesive layer a may be formed from the pressure-sensitive adhesive composition a on the release liner.
The moisture permeability of the pressure-sensitive adhesive sheet of the present invention determined in the following manner is not particularly limited, and is preferably 125g/m from the viewpoint of obtaining excellent moisture resistance2The number of days or less,
Moisture permeability: the measurement sample obtained by bonding a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer thickness of 35 μm to a triacetyl cellulose film (thickness: 25 μm) was determined by a moisture permeability test method (cup method) under the following conditions;
Measuring temperature: 40 deg.C
Relative humidity: 90 percent of
Measuring time: for 24 hours.
In the pressure-sensitive adhesive sheet of the present invention, the pressure-sensitive adhesive layer a preferably has the above moisture permeability.
The adhesive strength (measurement temperature: 23 ℃, relative humidity: 50% RH, pulling rate: 300 mm/min, peeling condition of peeling angle: 180 DEG, for glass plate) of the adhesive sheet of the present invention is not particularly limited, but is preferably 1.0gf/25mm or more, and more preferably 3.0gf/25mm or more, from the viewpoint of obtaining good adhesive reliability. In the psa sheet of the present invention, the adhesive force of the adhesive surface provided by the psa layer a preferably satisfies the above-mentioned range.
the adhesive sheet of the present invention is preferably transparent.
The transmittance (total light transmittance in the visible light wavelength region, according to JIS K7361-1) of the adhesive sheet of the present invention is not particularly limited, and is preferably 80% or more from the viewpoint of obtaining high transparency. The transmittance can be measured, for example, by applying the pressure-sensitive adhesive sheet of the present invention to a glass slide (model "S-1112", manufactured by Songlanzi Kaisha, thickness 1.0mm, haze 0.1%) and measuring with a haze meter (trade name "HM-150", manufactured by Colorkun color technology research, Ltd.).
In particular, the pressure-sensitive adhesive sheet of the present invention preferably has an adhesive force of 3.0gf/25mm or more and the above transmittance of 80% or more, from the viewpoint of satisfying both sufficient adhesiveness to an adherend and transparency.
The thickness of the adhesive sheet of the present invention is not particularly limited, but is preferably 5 to 200. mu.m, and more preferably 10 to 100. mu.m.
The pressure-sensitive adhesive sheet of the present invention has the pressure-sensitive adhesive layer a, and therefore can exhibit sufficient adhesiveness to an adherend and is excellent in moisture resistance. Further, after the pressure-sensitive adhesive sheet is bonded to an adherend, it is not necessary to perform a treatment (curing treatment) such as a heat treatment or an ultraviolet treatment in order to express adhesiveness or to further improve adhesiveness.
The pressure-sensitive adhesive sheet of the present invention can exhibit sufficient adhesiveness to an adherend and is excellent in moisture resistance, and therefore can be used for surface protection applications, reinforcing applications, and the like. For example, the pressure-sensitive adhesive sheet of the present invention can be used as a surface protective film or a reinforcing film.
The pressure-sensitive adhesive sheet of the present invention has the above-described characteristics, and therefore can be used in various fields. For example, it can be used for electrical or electronic devices. In particular, the resin composition can be preferably used for surface protection in the production of electric or electronic devices, surface protection in the use of electric or electronic devices, and the like. In addition, the resin composition can be preferably used for optical applications (for example, surface protection applications in the production of optical products and optical members, surface protection applications in the use of optical products and optical members, and the like).
The electric device is not particularly limited, and examples thereof include: household appliances such as televisions, refrigerators, washing machines, dust collectors, outdoor units of air conditioners, and the like. The electronic device is not particularly limited, and examples thereof include: an image display device such as a liquid crystal display or a plasma display, a mobile device such as a mobile phone, a smart phone, a tablet PC (personal computer), a notebook computer, a portable information terminal (PDA), a portable music player, a portable game machine, or a portable television.
The optical product is a product utilizing optical characteristics (for example, polarization, light refraction, light scattering, light reflection, light transmission, light absorption, light diffraction, optical rotation, visibility, and the like) in the product. Examples of the optical product include: a liquid crystal display device, a display device such as a PDP (plasma display panel) or an electronic paper, an input device such as a touch panel, or a device in which these display devices and input devices are appropriately combined.
The optical member is a member having the optical characteristics. Examples of the optical member include: the members constituting the devices (optical devices) such as the display device (image display device) and the input device, or the members used in these devices, may be, for example: polarizing plates, wavelength plates, retardation plates, optical compensation films, brightness enhancement films, light guide plates, reflection films, antireflection films, transparent conductive films (ITO films), design films, decorative films, surface protection plates, prisms, lenses, color filters, transparent substrates, and members formed by laminating these (these may be collectively referred to as "optical films"). The "plate" and the "film" described above each include a plate shape, a film shape, a sheet shape, and the like, and the "polarizing film" includes, for example, a "polarizing plate" and a "polarizing plate". As described above, the "optical member" in the present invention includes members (design film, decorative film, surface protection film, and the like) that perform decoration and protection while maintaining visibility and excellent appearance of the display portion of the display device and the input device.
More specifically, the adhesive sheet of the present invention can be used for surface protection of a thin layer display member (e.g., a touch panel using an LCD, etc.), a thin layer display device (e.g., an LCD or a color filter used therein), an image recognition member, a thin layer optical film (e.g., a polarizing plate, etc.), an electronic device (particularly, a thin layer electronic device), and the like.
examples
The present invention will be described in more detail below with reference to examples and comparative examples. The invention is not limited in any way by these examples.
(example 1)
A polyolefin resin (hydroxyl-terminated liquid polyolefin, trade name "EPOL", manufactured by Shikino corporation): 100 parts by weight of an isocyanate-based crosslinking agent (trade name "Duranate TSE-100", manufactured by Asahi Kasei Co., Ltd.): 30 parts by weight of a tin catalyst (trade name "OL-1", Tokyo Fine chemical Co., Ltd.): 0.03 part by weight of a layered silicate (trade name "Organite", manufactured by HOJUN Co., Ltd.): 5 parts by weight of a tackifier resin (alicyclic saturated hydrocarbon resin, trade name "ARKON P-125", manufactured by Mikan chemical Co., Ltd.): 1 part by weight, to thereby obtain an adhesive composition.
The adhesive composition was applied to a release-treated surface of a release liner (release liner having a release treatment on one surface of a polyethylene terephthalate substrate, trade name "diafil MRF-38", mitsubishi resin co., ltd.) to obtain a coated layer (adhesive composition layer).
Next, a heat treatment was performed (temperature: 130 ℃ C., time: 3 minutes) to form an adhesive layer having a thickness of 35 μm.
Then, a release liner was attached to the obtained pressure-sensitive adhesive layer, thereby obtaining a pressure-sensitive adhesive sheet (double-sided pressure-sensitive adhesive sheet including only a pressure-sensitive adhesive layer) in which both sides of the pressure-sensitive adhesive layer were protected by the release liner.
(example 2)
As the layered silicate, a layered silicate (trade name "S-BEN NZ", manufactured by HOJUN Co., Ltd.) was used: 5 parts by weight; except for this, a pressure-sensitive adhesive sheet was obtained in the same manner as in example 1.
(example 3)
As the layered silicate, a layered silicate (trade name "S-BEN NX", manufactured by HOJUN Co., Ltd.) was used: 5 parts by weight; except for this, a pressure-sensitive adhesive sheet was obtained in the same manner as in example 1.
Comparative example 1
An adhesive sheet was obtained in the same manner as in example 1, except that the layer silicate was not used.
(evaluation)
The pressure-sensitive adhesive sheets obtained in examples and comparative examples were subjected to the following measurement or evaluation. And the results are shown in table 1.
(method of measuring moisture permeability)
One release liner of the pressure-sensitive adhesive sheet was peeled off to expose the pressure-sensitive adhesive surface, and the pressure-sensitive adhesive sheet (thickness of pressure-sensitive adhesive layer: 35 μm) was bonded to a triacetyl cellulose film (TAC film, thickness 25 μm, manufactured by konica minolta corporation) via the pressure-sensitive adhesive surface. Then, the other release liner was peeled off, thereby obtaining a sample for measurement.
then, using the sample for measurement, the moisture permeability (water vapor transmission rate) was measured by a moisture permeability test method (cup method, according to JIS Z0208) under the following conditions;
Measuring temperature: 40 deg.C
Relative humidity: 90 percent of
Measuring time: for 24 hours.
In addition, a constant temperature and humidity cell was used for the measurement.
(measurement of adhesive force)
A pressure-sensitive adhesive sheet piece having a length of 100mm and a width of 25mm was obtained from the pressure-sensitive adhesive sheet. Next, one release liner was peeled from the adhesive sheet chip to expose the adhesive surface, and the adhesive sheet chip was bonded to a PET film (thickness 25 μm) via the adhesive surface. Thus, a measurement sample having a laminate structure of a release liner, an adhesive layer, and a PET film was obtained.
Next, the release liner was peeled from the measurement sample at 23 ℃ and 50% RH to expose the adhesive surface (measurement surface), and the measurement sample was pressure-bonded to a glass plate (soda-lime glass #0050, manufactured by sonlang nito industries, inc.) by reciprocating a 2kg roller once with the adhesive surface.
The measurement sample was left to stand in an atmosphere of 23 ℃ and 50% RH for 30 minutes, and then subjected to a 180 DEG peel test using a tensile tester (trade name "TCM-1 kNB", manufactured by Membeya corporation) to measure 180 DEG peel adhesion (180 DEG peel adhesion) (gf/25mm) to a glass plate. The measurement was carried out under conditions of a peel angle of 180 ℃ and a pull rate of 300 mm/min under an atmosphere of 23 ℃ and 50% RH.
(measurement of transmittance)
One release liner of the pressure-sensitive adhesive sheet was peeled off to expose the pressure-sensitive adhesive surface, and the pressure-sensitive adhesive sheet was bonded to a glass slide (model "S-1112", manufactured by sonlang nito industries, ltd., thickness 1.0mm, haze 0.1%) by using the pressure-sensitive adhesive surface. Then, the other release liner was peeled off, thereby obtaining a sample for measurement.
Subsequently, the transmittance (total light transmittance) was measured by a haze meter (device name "HM-150", manufactured by color technology research on Kyowa Kabushiki Kaisha).
TABLE 1
In table 1 above, the following expressions have the following meanings.
EPOL: polyolefin resin (hydroxyl-terminated liquid polyolefin, trade name "EPOL", manufactured by Shikino corporation)
TES-100: isocyanate crosslinking agent (trade name "Duranate TSE-100", manufactured by Asahi Kasei Co., Ltd.)
OL-1: tin catalyst (trade name "OL-1", manufactured by Tokyo Fine chemical Co., Ltd.)
ARKON P-125: tackifier resin (alicyclic saturated Hydrocarbon resin, trade name "ARKON P-125", manufactured by Mitsuwa chemical industries Co., Ltd.)
Organic: layered silicate (trade name "Organite", manufactured by HOJUN Co., Ltd.)
NZ: layered silicate (trade name "S-BEN NZ", manufactured by HOJUN Co., Ltd.)
NX: layered silicate (trade name "S-BEN NX", manufactured by HOJUN Co., Ltd.)
When examples 1 to 3 are compared with comparative example 1, the moisture permeability is reduced by about 20% because examples 1 to 3 contain the layered silicate.
Industrial applicability
The pressure-sensitive adhesive sheet of the present invention does not require a heat treatment, an ultraviolet treatment or the like after the pressure-sensitive adhesive sheet is bonded to an adherend, can exhibit sufficient adhesiveness, and is excellent in moisture resistance. Therefore, the resin composition can be suitably used for surface protection, reinforcement, and the like.
Claims (5)
1. An adhesive sheet comprising an adhesive layer containing a layered silicate and a reaction product of a hydroxyl group-containing polyolefin resin as a base polymer and an isocyanate-based crosslinking agent,
The content of the layered silicate is 1 to 5 parts by weight relative to 100 parts by weight of the base polymer.
2. The adhesive sheet according to claim 1, wherein the adhesive force of the adhesive sheet is 3.0gf/25mm or more, and the transmittance is 80% or more.
3. The adhesive sheet according to claim 1 or 2, wherein the adhesive sheet has a moisture permeability of 125g/m as determined by2The number of days or less,
Moisture permeability: the measurement sample obtained by bonding an adhesive sheet having an adhesive layer thickness of 35 μm to a triacetylcellulose film having a thickness of 25 μm was determined by a cup method as a moisture permeability test method under the following conditions;
Measuring temperature: 40 deg.C
Relative humidity: 90 percent of
Measuring time: for 24 hours.
4. The adhesive sheet according to claim 1 or 2, wherein the adhesive layer has a crosslinked structure.
5. The adhesive sheet according to claim 3, wherein the adhesive layer has a crosslinked structure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2013-159639 | 2013-07-31 | ||
| JP2013159639A JP6207281B2 (en) | 2013-07-31 | 2013-07-31 | Adhesive sheet |
| PCT/JP2014/069402 WO2015016106A1 (en) | 2013-07-31 | 2014-07-23 | Pressure-sensitive-adhesive sheet |
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| CN105378014A CN105378014A (en) | 2016-03-02 |
| CN105378014B true CN105378014B (en) | 2019-12-17 |
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| JP (1) | JP6207281B2 (en) |
| KR (1) | KR102182529B1 (en) |
| CN (1) | CN105378014B (en) |
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| CN107532044B (en) | 2015-05-08 | 2020-12-22 | 阪东化学株式会社 | Optically transparent adhesive sheet, method for producing optically transparent adhesive sheet, laminate, and display device with touch panel |
| EP3357985B1 (en) | 2015-09-29 | 2023-02-01 | Bando Chemical Industries, Ltd. | Optically transparent pressure-sensitive adhesive sheet, laminate, process for producing laminate, and display device with touch panel |
| US11447662B2 (en) | 2015-11-26 | 2022-09-20 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminated body, and display device with touch panel |
| KR102135573B1 (en) * | 2016-02-02 | 2020-07-20 | 반도 카가쿠 가부시키가이샤 | Optical transparent adhesive sheet, manufacturing method of optically transparent adhesive sheet, display device having a laminate and a touch panel |
| JP6235756B1 (en) * | 2016-02-26 | 2017-11-22 | バンドー化学株式会社 | Optical transparent adhesive sheet, optical transparent adhesive sheet manufacturing method, laminate, and display device with touch panel |
| JP6854675B2 (en) * | 2016-03-18 | 2021-04-07 | 日東電工株式会社 | Adhesive tape with wavelength conversion function |
| JP7100622B2 (en) * | 2017-03-30 | 2022-07-13 | リンテック株式会社 | Adhesive composition, encapsulation sheet, and encapsulant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021719A (en) * | 1988-03-09 | 1990-01-08 | Shinko Kagaku Kogyo Kk | Polyurethane tacky composition |
| JP2012193335A (en) * | 2010-09-27 | 2012-10-11 | Dainippon Printing Co Ltd | Tacky composition, laminate and image display device |
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| JP2003313429A (en) * | 2002-04-25 | 2003-11-06 | Toagosei Co Ltd | Active energy beam-curable aqueous emulsion composition |
| JP2008115328A (en) * | 2006-11-07 | 2008-05-22 | Konishi Co Ltd | Urethane-resin-based curable composition |
| JP5201347B2 (en) | 2008-11-28 | 2013-06-05 | 株式会社スリーボンド | Photocurable resin composition for sealing organic EL elements |
| JP5577711B2 (en) * | 2010-01-20 | 2014-08-27 | 東ソー株式会社 | Ethylene-vinyl acetate copolymer resin composition and hot melt adhesive comprising the same |
| JP6014325B2 (en) | 2010-12-28 | 2016-10-25 | 積水化学工業株式会社 | Sealant for organic electroluminescence display element |
| AU2012303090B2 (en) * | 2011-08-29 | 2015-09-10 | National Institute Of Advanced Industrial Science And Technology | Vapor barrier film, dispersion for vapor barrier film, method for producing vapor barrier film, solar cell back sheet, and solar cell |
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2014
- 2014-07-23 WO PCT/JP2014/069402 patent/WO2015016106A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH021719A (en) * | 1988-03-09 | 1990-01-08 | Shinko Kagaku Kogyo Kk | Polyurethane tacky composition |
| JP2012193335A (en) * | 2010-09-27 | 2012-10-11 | Dainippon Printing Co Ltd | Tacky composition, laminate and image display device |
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| KR20160040233A (en) | 2016-04-12 |
| KR102182529B1 (en) | 2020-11-24 |
| JP2015030766A (en) | 2015-02-16 |
| TWI636105B (en) | 2018-09-21 |
| TW201518468A (en) | 2015-05-16 |
| JP6207281B2 (en) | 2017-10-04 |
| CN105378014A (en) | 2016-03-02 |
| WO2015016106A1 (en) | 2015-02-05 |
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