CN104946144A - Polysiloxane adhesive tape - Google Patents
Polysiloxane adhesive tape Download PDFInfo
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- CN104946144A CN104946144A CN201510134984.7A CN201510134984A CN104946144A CN 104946144 A CN104946144 A CN 104946144A CN 201510134984 A CN201510134984 A CN 201510134984A CN 104946144 A CN104946144 A CN 104946144A
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- polysiloxane
- adhesive tape
- self adhesive
- bounding force
- based binder
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Abstract
The invention relates to a polysiloxane adhesive tape. The invention provides a polysiloxane adhesive tape which can be slightly stripped from an adherend and can restrain gradual rising of adhesive force, always maintains adhesive force of the slight strip, and can be slightly stripped even though after ongoing storage. The polysiloxane adhesive tape is characterized in that at least a surface of a base material film is provided with a polysiloxane adhesive layer containing polysiloxane polymer and a polysiloxane stripping agent, initial adhesive force is 0.01-0.10 N/25 mm, the value of the following formula (1): (adhesive force A)/(adhesive force B)*100 is lower than 80, wherein the adhesive force A is adhesive force when the tape is stored for 48 h at the temperature of lower than 85 DEG C after being adhered on glass, the adhesive force B is adhesive force when the adhesive tape which is provided with the polysiloxane adhesive layer on a surface of the base material film is stored for 48 h at the temperature of lower than 85 DEG C after being adhered on glass, the polysiloxane adhesive layer not containing the polysiloxane stripping agent.
Description
Technical field
The present invention relates to polysiloxane-based self adhesive tape.
Background technology
The tackiness, thermotolerance, chemical-resistant, weathering resistance etc. of polysiloxane-based self adhesive tape are excellent, therefore use in various field.Such as, be used in the polysiloxane-based self adhesive tape (see patent documentation 1) of a mask polysiloxane class binder layer of synthetic resin film base material, there is the polysiloxane-based self adhesive tape (see patent documentation 2) etc. of the polysiloxane-based binder layer formed by the polysiloxane-based binder composition containing organopolysiloxane, the organopolysiloxane with hydrogen silyl, platinum based catalyst.But, above-mentioned polysiloxane-based self adhesive tape exist to the bounding force of adherend through time the problem that rises.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 10-338852 publication
Patent documentation 2: Japanese Unexamined Patent Publication 2002-180025 publication
Summary of the invention
Invent problem to be solved
In addition, for polysiloxane-based self adhesive tape, though require through time preserve after power that the bounding force of adherend is also produced for gently peeling off, by the contact of adhesive face and adherend little.
Therefore, the object of the present invention is to provide a kind of polysiloxane-based self adhesive tape, it is light stripping to adherend, can suppress bounding force through time rise, can through time keep the light bounding force peeled off, even and if through time preserve after also can reach light stripping.
For the means of dealing with problems
Therefore, present inventor has performed research extensively and profoundly, found that, in the polysiloxane-based self adhesive tape with polysiloxane-based binder layer, when making polysiloxane-based binder layer contain polysiloxane-based stripper and be adjusted in specialized range by bounding force, can through time keep certain binding property, even and if through time preserve after also can make to peel off for light the bounding force of adherend, thus complete the present invention.
That is, the invention provides a kind of polysiloxane-based self adhesive tape, it is characterized in that,
In at least one side, face of base material film, there is the polysiloxane-based binder layer containing polysiloxane type polymers and polysiloxane-based stripper,
Initial adhesion is 0.01 ~ 0.10N/25mm,
The value of following formula (1) is less than 80,
(bounding force A)/(bounding force B) × 100 (1)
Bounding force A: to paste on glass and preserve the bounding force to glass after 48 hours at 85 DEG C;
Bounding force B: the adhesive tape joining of polysiloxane-based binder layer had the side, a face at base material film not containing polysiloxane-based stripper preserves the bounding force to glass after 48 hours to glass and at 85 DEG C.
In described polysiloxane-based binder layer, the content of polysiloxane-based stripper is preferably more than 0.2 weight part relative to 100 weight part polysiloxane type polymers and below 100 weight parts.
The mist degree of described polysiloxane-based binder layer is preferably less than 1.5%.
Described base material film is preferably polyester film.
Invention effect
Polysiloxane-based self adhesive tape of the present invention has above-mentioned formation, is therefore light stripping to adherend, can suppress bounding force through time rise, can through time keep the light bounding force peeled off, even and if through time preserve after also can reach light stripping.Therefore, even if through long-time after pasting on adherend, also can peel off from adherend simply and not damage adherend, even and if through time preserve after, also can reduce the bounding force to adherend.
Embodiment
[polysiloxane-based self adhesive tape]
Polysiloxane-based self adhesive tape of the present invention at least have contain based on the polysiloxane type polymers of polymkeric substance and the polysiloxane-based binder layer (polysiloxane-based formation of pressure-sensitive adhesive layer) of polysiloxane-based stripper.It should be noted that, in this specification sheets, sometimes above-mentioned " the polysiloxane-based binder layer containing polysiloxane type polymers and polysiloxane-based stripper " is called " polysiloxane-based binder layer A ".
In addition, in this specification sheets, " self adhesive tape " also comprises the implication of " adhesive sheet ".In addition, in this specification sheets, sometimes the composition used when forming above-mentioned polysiloxane-based binder layer A is called " polysiloxane-based binder composition A ".Binder composition is the composition for the formation of binder layer, comprises the implication of the composition for the formation of tackiness agent.
Polysiloxane-based self adhesive tape of the present invention has polysiloxane-based binder layer A at least one side, face of base material film.That is, polysiloxane-based self adhesive tape of the present invention is band base material self adhesive tape.In addition, polysiloxane-based self adhesive tape of the present invention can, for only there being the self adhesive tape of the one side adhesion type of adhesive face at a mask, also can be the self adhesive tape having the double-sided adhesive mould assembly of adhesive face at two masks.In addition, when polysiloxane-based self adhesive tape of the present invention is double-faced adhesive tape, polysiloxane-based self adhesive tape of the present invention can have the form that two adhesive faces are provided by polysiloxane-based binder layer A, also can have the form that an adhesive face is provided by polysiloxane-based binder layer A, another adhesive face is provided by another binder layer (binder layer beyond polysiloxane-based binder layer A).
Polysiloxane-based self adhesive tape of the present invention, except base material film and polysiloxane-based binder layer A, binder layer (other binder layer), other layer (such as middle layer, undercoat etc.) beyond binder layer A can also be had.In addition, the adhesive layer surface (adhesive face) of polysiloxane-based self adhesive tape of the present invention can be protected by release liner.
(polysiloxane-based binder layer A)
Polysiloxane-based self adhesive tape of the present invention at least has polysiloxane-based binder layer A.The polysiloxane-based base polymer of polymkeric substance and polysiloxane-based stripper based on polysiloxane-based binder layer A at least contains.In polysiloxane-based self adhesive tape of the present invention, the adhesive face provided by polysiloxane-based binder layer A is light release surface, can suppress bounding force through time rise, certain binding property can be kept.Infer this is because: polysiloxane-based stripper contained in polysiloxane-based binder layer A is present in polysiloxane-based binder layer A surface equably and solidifies.
Polysiloxane-based binder layer A contains polymkeric substance based on polysiloxane type polymers.In polysiloxane-based binder layer A, the content of polysiloxane type polymers is not particularly limited, and relative to polysiloxane-based binder layer A total amount (100 % by weight) preferably containing more than 50 % by weight, is more preferably more than 60 % by weight.
Above-mentioned polysiloxane-based binder layer A is formed by polysiloxane-based binder composition A.As above-mentioned polysiloxane-based binder layer A, be not particularly limited, can preferably enumerate such as: the polysiloxane-based binder layer formed by the polysiloxane-based binder composition of peroxide crosslinking type (the polysiloxane-based binder composition of peroxide curing type) or the polysiloxane-based binder composition of addition reaction-type, more preferably can enumerate the polysiloxane-based binder layer A formed by the polysiloxane-based binder composition of addition reaction-type.
In addition, as polysiloxane-based binder composition A, preferably containing phenyl polysiloxane class binder composition.As above-mentioned containing phenyl polysiloxane class binder composition, can enumerate such as: the polyoxyethylene alkylphenyl based polysiloxane class binder compositions etc. such as polyphenylmethyl based polysiloxane class binder composition, polyphenylethyl based polysiloxane class binder composition.
As the polysiloxane-based binder composition of above-mentioned addition reaction-type, the polysiloxane-based binder composition of the addition reaction-type preferably obtained by the organopolysiloxane with phenyl (addition reaction-type is containing phenyl polysiloxane class binder composition).As such addition reaction-type containing the organopolysiloxane with phenyl in phenyl polysiloxane class binder composition, can enumerate such as: the polyalkylphenylsilox,ne (polyoxyethylene alkylphenyl based polysiloxane) etc. such as PSI (polyphenylmethyl based polysiloxane), polyphenylethyl radical siloxane (polyphenylethyl based polysiloxane).
The polysiloxane-based binder composition of above-mentioned addition reaction-type is preferably containing silicon rubber and silicone resin.
As above-mentioned silicon rubber, as long as polysiloxane-based rubber constituent is then not particularly limited, preferably comprise the silicon rubber of the organopolysiloxane (organopolysiloxane particularly using methylphenyl siloxane as main composition unit) with phenyl.In organopolysiloxane in such silicon rubber, the various functional groups such as vinyl can be introduced as required.In addition, the weight-average molecular weight of above-mentioned organopolysiloxane is not particularly limited, and is preferably more than 150,000, is more preferably 280,000 ~ 1,000,000, more preferably 500,000 ~ 900,000.
In addition, as above-mentioned silicone resin, as long as the polysiloxane-based resin of polysiloxane-based tackiness agent (polysiloxane-based pressure-sensitive adhesive), then be not particularly limited, can enumerate such as: the silicone resin containing organopolysiloxane, described organopolysiloxane comprises to have and is selected from by Component units " R
3-Si
1/2" form M unit, by Component units " SiO
2" form Q unit, by Component units " R-SiO
3/2" T unit that forms and by Component units " R
2-SiO " (being total to) polymkeric substance of at least one unit of D unit of forming.In addition, the R in above-mentioned Component units represents alkyl or hydroxyl.As above-mentioned alkyl, can enumerate such as: aliphatic alkyl (alkyl such as methyl, ethyl etc.), ester ring type alkyl (cycloalkyl etc. such as cyclohexyl), aromatic hydrocarbyl (aryl such as phenyl, naphthyl etc.) etc.As the ratio (ratio) of above-mentioned " M unit " and " being selected from least one unit of Q unit, T unit and D unit ", such as the former/the latter's (mol ratio) is preferably 0.3/1 ~ 1.5/1 (preferably 0.5/1 ~ 1.3/1).
In organopolysiloxane in above-mentioned silicone resin, the various functional groups such as vinyl can be introduced as required.In addition, can for there is the functional group of crosslinking reaction in the functional group of introducing.The weight-average molecular weight of the organopolysiloxane in silicone resin is preferably more than 1000, is more preferably 1000 ~ 20000, and more preferably 1500 ~ 10000.
The mixing ratio of above-mentioned silicon rubber and above-mentioned silicone resin is not particularly limited, and relative to silicon rubber 100 weight part, silicone resin is preferably 100 ~ 220 weight parts (particularly 120 ~ 180 weight parts).
In addition, in the polysiloxane-based binder composition containing silicon rubber and silicone resin, silicon rubber and silicone resin can be the admixture of simple mixing, also can for being reacted by this mixing silicon rubber and silicone resin and become the condensed state of condenses (particularly partial condensate).
In addition, polysiloxane-based binder layer A contains polysiloxane-based stripper.As above-mentioned polysiloxane-based stripper, be not particularly limited, can enumerate such as: thennoset polysiloxane class stripper, the polysiloxane-based stripper of ionizing radiation curable etc.In addition, polysiloxane-based stripper can for not solvent-laden no-solvent type, be dissolved or dispersed in organic solvent solvent type any one.In addition, polysiloxane-based stripper may be used singly or two or more in combination.
As above-mentioned thennoset polysiloxane class stripper, be not particularly limited, preferably comprise organic hydrogen polysiloxanes and the organopolysiloxane with unsaturated group of aliphatic series.In addition, above-mentioned polysiloxane-based stripper causes the crosslinked and polysiloxane-based stripper of thermal addition reaction solidified nature that is that be cured preferably by thermal addition reaction.
As the polysiloxane-based stripper of above-mentioned thermal addition reaction solidified nature, be not particularly limited, can preferably enumerate: comprise in molecule have with the polysiloxane (containing Si-H based polysiloxane) of the hydrogen atom (H) of Siliciumatom (Si) bonding, molecule in containing the stripper of polysiloxane (Si-H radical reaction polysiloxane) Si-H key (covalent linkage of Si and H) to reactive functional group (Si-H radical reaction functional group).In addition, there is addition reaction by Si-H base and Si-H radical reaction functional group and carry out crosslinked and solidify in this stripper.
Above-mentioned containing in Si-H based polysiloxane, the Si being bonded with H can be any one of the Si in main chain and the Si in side chain.The above-mentioned Si-H based polysiloxane that contains is preferably the polysiloxane containing two or more Si-H base in molecule.As the polysiloxane containing two or more Si-H base, dimethyl hydrogen siloxane base polymers such as poly-(dimethyl siloxane-methyl siloxanes) preferably can be enumerated.
In addition, as above-mentioned Si-H radical reaction polysiloxane, can preferably enumerate: the polysiloxane of the form of Si (Si of such as main chain terminal, the Si of the main chain inside) bonding of the main chain (skeleton) of Si-H radical reaction functional group or the side chain containing described functional group and formation siloxane type polymers.Wherein, the polysiloxane of the Si Direct Bonding in preferred Si-H radical reaction functional group and main chain.In addition, as above-mentioned Si-H radical reaction polysiloxane, the polysiloxane with two or more Si-H radical reaction functional group can preferably be enumerated in molecule.
As the Si-H radical reaction functional group in above-mentioned Si-H radical reaction polysiloxane, can enumerate such as: the thiazolinyl such as vinyl, hexenyl etc.In addition, as the siloxane type polymers of the backbone portion formed in above-mentioned Si-H radical reaction polysiloxane, can enumerate such as: the polydialkysiloxanes (two alkyl can be the same or different) such as polydimethylsiloxane, polydiethylsiloxane, polymethy ethylsiloxane; Polyalkylaryl siloxane; Gather (dimethyl siloxane-methyl siloxanes), by the multiple polymkeric substance etc. obtained containing Si monomer polymerization.Wherein, as the siloxane type polymers forming backbone portion, preferred polydimethylsiloxane.
Particularly, the polysiloxane-based stripper of above-mentioned thermal addition reaction solidified nature is preferably the polysiloxane-based stripper of thermal addition reaction solidified nature containing the polysiloxane containing two or more Si-H radical reaction functional group in the polysiloxane containing two or more Si-H base in molecule and molecule.
In addition, as the polysiloxane-based stripper of above-mentioned ionizing radiation curable, be not particularly limited, preferably can enumerate to be irradiated by ultraviolet (UV) and cause crosslinking reaction and the polysiloxane-based stripper of UV solidified nature that is cured.
The polysiloxane-based stripper of above-mentioned UV solidified nature is irradiate by UV the stripper causing the chemical reactions such as cationoid polymerisation, radical polymerization, radical addition polymerization, hydrogen silylation reactive to be cured.The polysiloxane-based stripper of above-mentioned UV solidified nature is particularly preferably the polysiloxane-based class stripper of the UV solidified nature be cured by cationoid polymerisation.
As the polysiloxane-based stripper of cationic polymerization type UV solidified nature, be not particularly limited, can preferably enumerate containing at least two epoxy group(ing) direct or by the divalent group (alkylidene group such as methylene radical, ethylidene separately; The alkylene oxide group such as inferior ethoxyl, sub-propoxy-) with the stripper containing epoxy group(ing) polysiloxane forming the Si bonding contained in the Si (Si of such as main chain terminal, the Si of main chain inside) of main chain (skeleton) of polysiloxane type polymers and/or side chain.The bonding scheme of these at least two epoxy group(ing) and Si can be the same or different.That is, the stripper containing the plural polysiloxane containing epoxy group(ing) side chain containing one or more can preferably be enumerated.As containing epoxy group(ing) side chain, glycidyl, glycidoxy (glycidyl oxygen base), 3,4-epoxycyclohexyls, 2,3-epoxycyclopentyl etc. can be enumerated.Can be any one of straight-chain, branched or their mixture containing epoxy group(ing) polysiloxane.
Particularly, for polysiloxane-based self adhesive tape of the present invention, from the viewpoint of obtain with excellent level bounding force through time rise inhibition, preferably in polysiloxane-based binder layer A, contain thennoset polysiloxane class stripper, more preferably containing the polysiloxane-based stripper of thermal addition reaction solidified nature.
The content of the above-mentioned polysiloxane-based stripper in the polysiloxane-based binder layer A of polysiloxane-based self adhesive tape of the present invention is not particularly limited, relative to based on polysiloxane type polymers 100 weight part of polymkeric substance, to be preferably more than 0.2 weight part and below 100 weight parts, be more preferably more than 0.2 weight part and below 80 weight parts, be more preferably more than 0.2 weight part further and be less than 60 weight parts.When above-mentioned content is more than 0.2 weight part, by make polysiloxane-based binder layer contain polysiloxane-based stripper can easily be inhibited adhesive power through time rise effect.In addition, when above-mentioned content is below 100 weight parts, easily suppresses to can not get sufficient binding property thus be difficult to the problem that pastes on adherend.
In addition, in the polysiloxane-based binder layer A of polysiloxane-based self adhesive tape of the present invention, additive can be contained as required.That is, above-mentioned polysiloxane-based binder composition A can contain additive as required except polysiloxane-based stripper.In addition, above-mentioned polysiloxane-based binder composition A can contain catalyzer (particularly platinum based catalyst etc.).As above-mentioned additive, be not particularly limited, linking agent, weighting agent, softening agent, antiaging agent, antistatic agent, tinting material (pigment, dyestuff etc.) etc. can be enumerated.In addition, additive may be used singly or two or more in combination.
Containing in the polysiloxane-based binder composition of above-mentioned silicon rubber and silicone resin, from the viewpoint of the polysiloxane-based binder layer obtained as crosslinking structural body, linking agent can be contained.As such linking agent, be not particularly limited, preferably can enumerate type siloxane linking agent (polysiloxane-based linking agent), peroxide linking agent etc.In addition, linking agent may be used singly or two or more in combination.
As above-mentioned type siloxane linking agent, be not particularly limited, preferably can enumerate in molecule the poly-organohydrogensiloxanes of the hydrogen atom with two or more and silicon atom bonding.In poly-organohydrogensiloxanes like this, can also the various organic group of bonding except hydrogen atom on the Siliciumatom of bonded hydrogen atoms.As this organic group, the alkyl such as methyl, ethyl can be enumerated; The aryl such as phenyl; Haloalkyl etc.Wherein, from the viewpoint of synthesis, operation, preferred alkyl, more preferably methyl.In addition, the skeleton structure of poly-organohydrogensiloxanes can have any one skeleton structure of straight-chain, branched, ring-type, preferred straight-chain.
As mentioned above, polysiloxane-based binder layer A of the present invention is formed by polysiloxane-based binder composition A.Polysiloxane-based binder composition A is the composition for the formation of polysiloxane-based binder layer A, the polysiloxane type polymers at least containing polymkeric substance based on above-mentioned and above-mentioned polysiloxane-based stripper.Polysiloxane-based binder layer A is not particularly limited, such as can by above-mentioned polysiloxane type polymers, above-mentioned polysiloxane-based stripper etc. being obtained by mixing.
The viscosity of polysiloxane-based binder composition A is not particularly limited, and from the viewpoint of workability, operability, easily forms uniform binder layer, is preferably 0.1 ~ 100Pas, is more preferably 0.5 ~ 50Pas.It should be noted that, the viscosity in this specification sheets refers to and uses BH viscometer as viscometer, at rotor: No. 5 rotor, rotating speed: 10rpm, mensuration temperature: the viscosity measured under the condition of 30 DEG C.
Polysiloxane-based binder layer A can by obtaining the polysiloxane-based binder composition A of stratiform, and make this nonwoven fabric from filaments be solidified to form.Such as, can by obtaining adhesive composition layer by polysiloxane-based binder composition A, and heating and dry (carrying out 1 ~ 10 minute heat treated at the temperature of such as 100 ~ 160 DEG C) are carried out to this adhesive composition layer and is formed.
The thickness of polysiloxane-based binder layer A is not particularly limited, and from the viewpoint of gluing reliability, is preferably 3 ~ 200 μm, is more preferably 5 ~ 150 μm, more preferably 5 ~ 100 μm.
The mist degree (based on JIS K7136) of polysiloxane-based binder layer A is not particularly limited, and from the viewpoint of obtaining high transparent, being preferably less than 1.5%, being more preferably less than 1.0%.It should be noted that, mist degree such as can by fitting to slide glass (such as by polysiloxane-based binder layer A, the slide glass of total light transmittance 91.8%, mist degree 0.4%) on, and use haze meter (dye technology institute of Murakami K. K. manufactures, trade(brand)name " HM-150 ") to measure.
In addition, the transmissivity (total light transmittance in visible wavelength range, based on JIS K7361-1) of polysiloxane-based binder layer A is not particularly limited, and from the viewpoint of obtaining high transparent, being preferably more than 80%, being more preferably more than 85%.It should be noted that, transmissivity such as can by fitting to slide glass (such as by polysiloxane-based binder layer A, the slide glass of total light transmittance 91.8%, mist degree 0.4%) on, and use haze meter (dye technology institute of Murakami K. K. manufactures, trade(brand)name " HM-150 ") to measure.
(base material film)
As mentioned above, polysiloxane-based self adhesive tape of the present invention is the band base material self adhesive tape at least with base material film and polysiloxane-based binder layer A.In addition, base material film for the base material film be made up of one deck, also can have two-layer above stepped construction.
Above-mentioned base material film is preferably plastic basis material (polymeric substrate).As the material forming above-mentioned plastic basis material (polymeric substrate), be not particularly limited, can enumerate such as: the polyester such as polyethylene terephthalate, PEN, polybutylene terephthalate, PBN; The polyolefine such as polyethylene, polypropylene, ethylene-propylene copolymer; Polyvinyl alcohol; Polyvinylidene dichloride; Polyvinyl chloride; Vinyl chloride vinyl acetate copolymer; Polyvinyl acetate; Polymeric amide; Polyimide; The cellulose family such as triacetyl cellulose, diacetyl cellulose; Fluorine resin; Polyethers; Polyetheramides; Polyether-ether-ketone; Polyphenylene sulfide; The polystyrene resins such as polystyrene; Polycarbonate; Polyethersulfone; The acrylic resins etc. such as polymethylmethacrylate.In addition, above-mentioned materials may be used singly or two or more in combination.
Wherein, as the material forming above-mentioned plastic basis material, good from the viewpoint of the balance of intensity, operability (treatability), cost, dimensional stability, anchor force, preferred polyester, cellulose family, acrylic resin etc., more preferably polyester.That is, above-mentioned plastic basis material is preferably polyester film, cellulose family film, acrylic resin film, is more preferably polyester film.
Above-mentioned base material can implement surface treatment as required.Such as, above-mentioned base material film can pass through the controlling distortion such as stretch processing (uniaxial extension or biaxial stretch-formed).In addition, on the surface of base material film, in order to improve the adhesivity with binder layer, can usual surface treatment be implemented, such as chromic acid process, be exposed to ozone, be exposed to flame, be exposed to high-voltage electric shock, oxide treatment etc. that ionizing rays process etc. is undertaken by chemistry or physical method.
In addition, can implement for improving the primary coat process with the adhesive power of binder layer.Particularly, in order to improve the adhesive power with polysiloxane-based binder layer A, above-mentioned base material film has preferably carried out the base material film of polysiloxane-based primary coat process.
In addition, from the viewpoint of the scratch resistance (scratch resistance) improving surface, above-mentioned base material film can be implemented firmly to be coated with process.When implementing so hard painting process, when for surface protection, its defencive function can be improved further.In addition, produce from the viewpoint of suppression electrostatic, base material film can implement anti-electrostatic process.
Above-mentioned base material can for a such as face be coated with the base material processed firmly in order to improve to implement with the adhesivity of binder layer primary coat process, another face implement.
(release liner)
As mentioned above, in order to protect adhesive face, polysiloxane-based self adhesive tape of the present invention can be provided with release liner.Above-mentioned release liner is not particularly limited, and can use known or usual release liner.Such as, as above-mentioned release liner, can preferably enumerate: by polyester resins such as polyethylene terephthalate (PET), PEN (PEN), polybutylene terephthalates (PBT); Polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), ethylene-propylene copolymer, vinyl-vinyl acetate copolymer (EVA) etc. are using alpha-olefin as the olefine kind resin of monomer component; Polyvinyl chloride (PVC); Vinyl acetate esters resin; Polycarbonate (PC); Polyphenylene sulfide (PPS); The amides resins such as polymeric amide (nylon), fully aromatic polyamide (aramid); Polyimide based resin; Polyether-ether-ketone (PEEK); The olefine kind resins such as polyethylene (PE), polypropylene (PP); The plastics film that the fluorine resins such as tetrafluoroethylene, polychlorotrifluoroethylene, fluorinated ethylene propylene, poly(vinylidene fluoride), tetrafluoraoethylene-hexafluoropropylene copolymer, chlorine vinyl fluoride-vinylidene fluoride copolymer etc. are formed.
In addition, as above-mentioned release liner, can enumerate such as at least one of release liner base material have on the surface peel ply (lift-off processing layer) release liner, comprise the low tackiness release liner of fluoropolymer, comprise the low tackiness release liner etc. of non-polar polymer.In addition, the release liner base material (that is, release liner base material itself) without peel ply can also be enumerated.As above-mentioned fluoropolymer, be not particularly limited, can enumerate such as: tetrafluoroethylene, polychlorotrifluoroethylene, fluorinated ethylene propylene, poly(vinylidene fluoride), tetrafluoraoethylene-hexafluoropropylene copolymer, chlorine vinyl fluoride-vinylidene fluoride copolymer etc.In addition, as above-mentioned non-polar polymer, be not particularly limited, can enumerate such as: the olefine kind resins etc. such as polyethylene (PE), polypropylene (PP).Wherein, at least one being preferably used in release liner base material has the release liner of peel ply on the surface, does not have the release liner base material of peel ply (that is, release liner base material itself).
As above-mentioned release liner base material, be not particularly limited, can plastics film etc. be enumerated.As such plastics film, can enumerate such as: by polyester resins such as polyethylene terephthalate (PET), PEN (PEN), polybutylene terephthalates (PBT); Polyethylene (PE), polypropylene (PP), polymethylpentene (PMP), ethylene-propylene copolymer, vinyl-vinyl acetate copolymer (EVA) etc. are using alpha-olefin as the olefine kind resin of monomer component; Polyvinyl chloride (PVC); Vinyl acetate esters resin; Polycarbonate (PC); Polyphenylene sulfide (PPS); The amides resins such as polymeric amide (nylon), fully aromatic polyamide (aramid); Polyimide based resin; The plastics film that polyether-ether-ketone (PEEK) etc. are formed.Wherein, consider from viewpoints such as processibility, availability, workability, dirt resistance, costs, the plastics film preferably formed by polyester resin, more preferably PET film.
As the stripping treatment agent forming above-mentioned peel ply, be not particularly limited, can enumerate such as: the stripping treatment agents such as polysiloxane-based stripping treatment agent, fluorine-containing type stripping treatment agent, chain alkyl class stripping treatment agent, moly-sulfide.In addition, stripping treatment agent may be used singly or two or more in combination.
Above-mentioned release liner can be manufactured by known customary way.In addition, the thickness of above-mentioned release liner is not particularly limited.
(polysiloxane-based self adhesive tape)
The manufacture method of polysiloxane-based self adhesive tape of the present invention is not particularly limited, and can use known formation method.Such as, can make by forming polysiloxane-based binder layer A at least one side, face of above-mentioned base material film by above-mentioned polysiloxane-based binder composition A.
The Initial adhesion (Initial adhesion of the adhesive face particularly provided by polysiloxane-based binder layer A) of polysiloxane-based self adhesive tape of the present invention is 0.01 ~ 0.10N/25mm, be preferably 0.01 ~ 0.08N/25mm, be more preferably 0.01 ~ 0.05N/25mm.The Initial adhesion of polysiloxane-based self adhesive tape of the present invention is more than 0.01N/25mm, therefore can obtain sufficient tackiness to adherend.In addition, Initial adhesion is below 0.10N/25mm, is therefore light stripping to adherend, little to the bounding force of adherend.Therefore, even if paste on adherend, also can peel off from adherend simply and not damage adherend.It should be noted that, Initial adhesion refers to by the adhesive tape joining that do not carry out pasting or preserving on adherend, bounding force when just pasting upper.Initial adhesion can by measure self adhesive tape fitted to adherend upper 30 minute after peel off time bounding force and obtain.Above-mentioned Initial adhesion be draw speed 300mm/ minute, measure under the stripping conditions of peel angle 180 °, bounding force to sheet glass.In addition, measure under the environment measuring temperature 23 DEG C, relative humidity 50%RH.In addition, as sheet glass, sheet glass (manufacture of soda-lime glass #0050, Song Langxiaozi Industrial Co., Ltd) can be enumerated.
The value of the following formula (1) of polysiloxane-based self adhesive tape of the present invention is preferably less than 80.
(bounding force A)/(bounding force B) × 100 (1)
Bounding force A: to paste on glass and preserve the bounding force to glass after 48 hours at 85 DEG C;
Bounding force B: the adhesive tape joining of polysiloxane-based binder layer had on the surface at base material film not containing polysiloxane-based stripper preserves the bounding force to glass after 48 hours to glass and at 85 DEG C.
Bounding force A and bounding force B be draw speed 300mm/ minute, measure under the stripping conditions of peel angle 180 °, bounding force to sheet glass.In addition, measure under the environment measuring temperature 23 DEG C, relative humidity 50%RH.
As sheet glass, such as sheet glass (manufacture of soda-lime glass #0050, Song Langxiaozi Industrial Co., Ltd) can be enumerated.
The self adhesive tape used in the mensuration of bounding force A is the self adhesive tape at least one side, face of base material film with the polysiloxane-based binder layer containing polysiloxane-based stripper, in addition, the self adhesive tape used in the mensuration of bounding force B is the self adhesive tape of the polysiloxane-based binder layer had at least one side, face of base material film not containing polysiloxane-based stripper.When the self adhesive tape used in the mensuration of bounding force A is compared with the self adhesive tape used in the mensuration of bounding force B, be identical except whether containing except polysiloxane-based stripper this point in polysiloxane-based binder layer.Such as, for the self adhesive tape used in the mensuration of bounding force A and the self adhesive tape that uses in the mensuration of bounding force B, the thickness of polysiloxane-based binder layer is identical, and material, the thickness of base material film are identical.
In addition, within 48 hours, be equivalent to preserve for a long time at normal temperatures 85 DEG C of preservations.
For polysiloxane-based self adhesive tape of the present invention, the value of formula (1) is less than 80, is preferably less than 75.The value of the formula (1) of polysiloxane-based self adhesive tape of the present invention is less than 80, therefore can suppress bounding force through time rise, certain bounding force can be kept, even and if through time preserve also can keep certain bounding force.
In addition, polysiloxane-based self adhesive tape of the present invention is preferably transparent.
The mist degree (based on JIS K7136) of polysiloxane-based self adhesive tape of the present invention is not particularly limited, and from the viewpoint of obtaining high transparent, being preferably less than 1.5%, being more preferably less than 1.0%.It should be noted that, mist degree such as can by fitting to slide glass (such as by polysiloxane-based self adhesive tape of the present invention, the slide glass of total light transmittance 91.8%, mist degree 0.4%) on, and use haze meter (dye technology institute of Murakami K. K. manufactures, trade(brand)name " HM-150 ") to measure.
In addition, the transmissivity (total light transmittance in visible wavelength range, based on JIS K7361-1) of polysiloxane-based self adhesive tape of the present invention is not particularly limited, from the viewpoint of obtaining high transparent, be preferably less than 80%, be more preferably less than 85%.It should be noted that, transmissivity such as can by fitting to slide glass (such as by polysiloxane-based self adhesive tape of the present invention, the slide glass of total light transmittance 91.8%, mist degree 0.4%) on, and use haze meter (dye technology institute of Murakami K. K. manufactures, trade(brand)name " HM-150 ") to measure.
The thickness of polysiloxane-based self adhesive tape of the present invention is not particularly limited, and is preferably 15 ~ 400 μm, is more preferably 20 ~ 300 μm, more preferably 25 ~ 250 μm.
Polysiloxane-based self adhesive tape of the present invention has polysiloxane-based binder layer A, therefore sufficient tackiness is played to adherend and can suppress adhesive power through time rise.In addition, being light stripping to adherend, also be light stripping to adherend even if long-term after preserving.Therefore, polysiloxane-based self adhesive tape of the present invention can keep certain bounding force for a long time.Therefore, even if polysiloxane-based self adhesive tape of the present invention pastes through for a long time after on adherend, also can peel off from adherend simply and not damage adherend.That is, the releasable of polysiloxane-based self adhesive tape of the present invention is excellent.
Such as, by polysiloxane-based adhesive tape joining of the present invention on the fragile adherend such as the little semiconductor wafer of thickness, even if through long-time, also can simply polysiloxane-based self adhesive tape of the present invention be peeled off from adherend and not damage adherend.
Polysiloxane-based self adhesive tape of the present invention has above-mentioned characteristic, is therefore suitable as surface protective film.Such as, the surface protection purposes of thin layer display member, thin layer display unit, thin layer optical thin film, electronics etc. can be preferred for.As above-mentioned thin layer display unit, be not particularly limited, preferably can enumerate the contact panel using LCD etc.As above-mentioned thin layer display member, be not particularly limited, the colored filter etc. that can preferably enumerate LCD or use wherein.As above-mentioned thin layer optical thin film, be not particularly limited, preferably can enumerate polarization plates.
Embodiment
Below enumerate embodiment and comparative example is described particularly to the present invention.The present invention is not by any restriction of these examples.
(embodiment 1)
By polysiloxane-based tackiness agent 1 (the polysiloxane-based tackiness agent of addition reaction-type, trade(brand)name " X-40-3306 ", Shin-Etsu Chemial Co., Ltd manufactures) 100 weight parts, platinum based catalyst 1 (trade(brand)name " CAT-PL-50T ", Shin-Etsu Chemial Co., Ltd manufactures) 0.4 weight part, polysiloxane-based stripper 1 is (using dimethyl polysiloxane as the polysiloxane-based stripper of the addition reaction-type of main component, trade(brand)name " KS-776A ", Shin-Etsu Chemial Co., Ltd manufactures) 0.5 weight part mixing, thus prepared polysiloxane-based binder composition (polysiloxane-based binder composition 1).
At base material film 1, (face is through the polyester film of polysiloxane-based primary coat process, thickness 38 μm, trade(brand)name " Diafoil MRF#38 ", Mitsubishi Plastics Inc manufactures) polysiloxane primary coat treated side on be coated with polysiloxane-based binder composition 1, thus obtain the film with polysiloxane-based adhesive composition layer.
Then, the above-mentioned film with polysiloxane-based adhesive composition layer is carried out to the heat drying process of heating under temperature 30 DEG C, the condition of 2 minutes time, heating under temperature 130 DEG C, the condition of 3 minutes time again, thus form the polysiloxane-based binder layer of thickness 75 μm.Then, the polysiloxane-based self adhesive tape in the side, a face of base material film with polysiloxane-based binder layer is obtained.
In addition, pet film (not carrying out the pet film of lift-off processing) that the adhesive face of polysiloxane-based self adhesive tape is fitted, to protect polysiloxane-based binder layer.
(embodiment 2)
Except being set as except 1.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 2) similarly to Example 1.
Except using this polysiloxane-based binder composition 2, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 3)
Except being set as except 3.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 3) similarly to Example 1.
Except using this polysiloxane-based binder composition 3, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 4)
Except being set as except 5.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 4) similarly to Example 1.
Except using this polysiloxane-based binder composition 4, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 5)
Except being set as except 10.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 5) similarly to Example 1.
Except using this polysiloxane-based binder composition 5, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 6)
Except being set as except 30.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 6) similarly to Example 1.
Except using this polysiloxane-based binder composition 6, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 7)
Except being set as except 50.0 weight parts by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 7) similarly to Example 1.
Except using this polysiloxane-based binder composition 7, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 8)
Except using polysiloxane-based binder composition 2 and being adjusted to except 10.0 μm by the thickness of dried binder composition 2, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(embodiment 9)
Except using polysiloxane-based binder composition 3, obtain polysiloxane-based self adhesive tape similarly to Example 8.
(comparative example 1)
Except not adding polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 8) similarly to Example 1.
Except using this polysiloxane-based binder composition 8, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(comparative example 2)
Except being set as except 0.1 weight part by the amount (interpolation number) of polysiloxane-based stripper 1, prepare polysiloxane-based binder composition (polysiloxane-based binder composition 9) similarly to Example 1.
Except using this polysiloxane-based binder composition 9, obtain polysiloxane-based self adhesive tape similarly to Example 1.
(comparative example 3)
Except using polysiloxane-based binder composition 8, prepare polysiloxane-based self adhesive tape similarly to Example 8.
(comparative example 4)
Except using polysiloxane-based binder composition 9, prepare polysiloxane-based self adhesive tape similarly to Example 8.
[mensuration]
For the polysiloxane-based self adhesive tape obtained in embodiment and comparative example, use the measuring method of following bounding force, obtain Initial adhesion, bounding force A, bounding force B.In addition, by this bounding force A and bounding force B, obtain the value [(bounding force A)/(bounding force B) × 100] of formula (1).
In addition, working sample is obtained at slide glass (total light transmittance 91.8%, mist degree 0.4%) the polysiloxane-based binder layer of upper laminating, by this working sample, (dye technology institute of Murakami K. K. manufactures to use haze meter, trade(brand)name " HM-150 "), obtain the mist degree of polysiloxane-based binder layer and the total light transmittance of polysiloxane-based binder layer.
(measuring method of bounding force)
By polysiloxane-based self adhesive tape 23 DEG C, place 30 minutes under the environment of 50%RH after, obtained the self adhesive tape small pieces of long 100mm, wide 25mm by polysiloxane-based self adhesive tape.Then, 23 DEG C, under the environment of 50%RH, release liner is peeled off from above-mentioned self adhesive tape small pieces and adhesive face (mensuration face) is exposed, self adhesive tape small pieces are crimped onto sheet glass (soda-lime glass #0050 under 2kg roller, once round condition, Song Langxiaozi Industrial Co., Ltd manufactures) on, thus self adhesive tape small pieces are fitted on sheet glass.Then, use tensile testing machine (trade(brand)name " TCM-1kNB ", NMB (ミ ネ ベ ア) company manufactures) carry out 180 ° of stripping tests, measure 180 ° of peel adhesion (180 ° of peel adhesion) (N/25mm).Be determined at 23 DEG C, under the environment of 50%RH, carry out under the condition of peel angle 180 °, draw speed 300mm/ minute.
(Initial adhesion)
After making polysiloxane-based self adhesive tape, for polysiloxane-based self adhesive tape, obtain bounding force by the measuring method of above-mentioned bounding force.Using this bounding force as Initial adhesion.
It should be noted that, in the mensuration of Initial adhesion, self adhesive tape small pieces are fitted on sheet glass, place and carry out 180 ° of stripping tests after 30 minutes.
(bounding force A)
After making polysiloxane-based self adhesive tape, place 48 hours at the temperature of 85 DEG C, obtain heating the polysiloxane-based self adhesive tape after placing.Polysiloxane-based self adhesive tape after placing for this heating, obtains bounding force by the measuring method of above-mentioned bounding force.Using this bounding force as bounding force A.
(bounding force B)
For embodiment and the comparative example of the polysiloxane-based self adhesive tape related to containing polysiloxane-based stripper in polysiloxane-based binder layer, make the polysiloxane-based self adhesive tape corresponding with each embodiment and comparative example as reference by step identical except adding polysiloxane-based stripper.
Whether this is as the polysiloxane-based self adhesive tape of reference, not containing polysiloxane-based stripper in polysiloxane-based binder layer, except containing except polysiloxane-based stripper, identical with the polysiloxane-based self adhesive tape of corresponding embodiment or comparative example.
Make this as after the polysiloxane-based self adhesive tape of reference, at the temperature of 85 DEG C place 48 hours, obtain heat place after with reference to polysiloxane-based self adhesive tape.For this heating place after with reference to polysiloxane-based self adhesive tape, obtain bounding force by the measuring method of above-mentioned bounding force.Using this bounding force as bounding force B.
In addition, for the comparative example not containing polysiloxane-based stripper, for convenience's sake, the value of value as bounding force B of bounding force A is adopted.
Table 1
In table 1, " A/B × 100 " expression " value [(bounding force A)/(bounding force B) × 100] of formula (1) "
Claims (4)
1. a polysiloxane-based self adhesive tape, is characterized in that,
In at least one side, face of base material film, there is the polysiloxane-based binder layer containing polysiloxane type polymers and polysiloxane-based stripper,
Initial adhesion is 0.01 ~ 0.10N/25mm,
The value of following formula (1) is less than 80,
(bounding force A)/(bounding force B) × 100 (1)
Bounding force A: to paste on glass and preserve the bounding force to glass after 48 hours at 85 DEG C;
Bounding force B: the adhesive tape joining of polysiloxane-based binder layer had the side, a face at base material film not containing polysiloxane-based stripper preserves the bounding force to glass after 48 hours to glass and at 85 DEG C.
2. polysiloxane-based self adhesive tape as claimed in claim 1, wherein,
In described polysiloxane-based binder layer, the content of polysiloxane-based stripper is more than 0.2 weight part relative to 100 weight part polysiloxane type polymers and below 100 weight parts.
3. polysiloxane-based self adhesive tape as claimed in claim 1 or 2, wherein,
The mist degree of described polysiloxane-based binder layer is less than 1.5%.
4. the polysiloxane-based self adhesive tape according to any one of claims 1 to 3, wherein,
Described base material film is polyester film.
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| JP2014-065656 | 2014-03-27 | ||
| JP2014065656A JP6378516B2 (en) | 2014-03-27 | 2014-03-27 | Silicone adhesive tape |
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| CN105969225A (en) * | 2015-03-13 | 2016-09-28 | 日东电工株式会社 | Functional film with adhesive layer and film set |
| CN110157374A (en) * | 2018-03-26 | 2019-08-23 | 昆山普瑞凯纳米技术有限公司 | A kind of organic pressure-sensitive gel and preparation method thereof |
| CN111670235A (en) * | 2018-02-28 | 2020-09-15 | 陶氏东丽株式会社 | Adhesive film |
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| WO2017150290A1 (en) * | 2016-03-04 | 2017-09-08 | 日東電工株式会社 | Surface protective film |
| JP6368810B2 (en) * | 2016-03-04 | 2018-08-01 | 日東電工株式会社 | Surface protection film |
| KR102212135B1 (en) * | 2018-01-11 | 2021-02-03 | 주식회사 엘지화학 | The temperature variable adhesive sheet and method for preparing adhesive sheet using the same |
| KR102187647B1 (en) | 2018-12-19 | 2020-12-07 | 율촌화학 주식회사 | The double curing type silicone adhesive composition |
| KR102395516B1 (en) | 2021-01-29 | 2022-05-10 | 율촌화학 주식회사 | Acryl-based adhesive compostion and surface protective film for cover glass comprising the same |
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| JP6378516B2 (en) | 2018-08-22 |
| KR20150112831A (en) | 2015-10-07 |
| TWI729972B (en) | 2021-06-11 |
| KR102413880B1 (en) | 2022-06-28 |
| JP2015189778A (en) | 2015-11-02 |
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| TW201542755A (en) | 2015-11-16 |
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