CN1896169A - Adhesive belt or sheet with reflectivity and/or lightproofness - Google Patents

Adhesive belt or sheet with reflectivity and/or lightproofness Download PDF

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Publication number
CN1896169A
CN1896169A CNA200610103064XA CN200610103064A CN1896169A CN 1896169 A CN1896169 A CN 1896169A CN A200610103064X A CNA200610103064X A CN A200610103064XA CN 200610103064 A CN200610103064 A CN 200610103064A CN 1896169 A CN1896169 A CN 1896169A
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CN
China
Prior art keywords
layer
body material
sheet
reflectivity
adhesive tape
Prior art date
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Granted
Application number
CNA200610103064XA
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Chinese (zh)
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CN1896169B (en
Inventor
池田功一
上田翼
横山纯二
玉井弘宣
副田义和
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Nitto Denko Corp
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Nitto Denko Corp
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Publication of CN1896169A publication Critical patent/CN1896169A/en
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Publication of CN1896169B publication Critical patent/CN1896169B/en
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/28—Metal sheet
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/318—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of liquid crystal displays
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier

Abstract

The pressure-sensitive adhesive tape or sheet having reflecting properties and/or light-blocking properties has a pressure-sensitive adhesive layer on at least one surface of a base material and properties such that the reflectivity of at least one surface of the base material is >=60(%) and/or the transmission is <=0.3(%), and the base material is one made of a metal having a thickness of >=3 [mu]m. As the base material made of a metal, a metallic foil is suitable, and particularly a base material made of aluminum can be suitably used. As the base material made of a metal, a base material having a black layer on at least one surface can be used. The pressure-sensitive adhesive layer on at least one surface of the base material may contain a heat conductive compound.

Description

Self adhesive tape or sheet with reflectivity and/or opacifying property
Technical field
The present invention relates to have the self adhesive tape or the sheet of reflectivity and/or opacifying property.
Background technology
In so-called " mobile phone " etc., liquid crystal display mode block assembly relevant with display frame and back light unit are fixed with self adhesive tape or sheet, as such self adhesive tape or sheet, use self adhesive tape or sheet (with reference to patent documentation 1～12) with reflectivity or opacifying property.
[patent documentation 1] spy opens the 2004-59723 communique
[patent documentation 2] spy opens the 2002-235053 communique
[patent documentation 3] spy opens the 2002-350612 communique
[patent documentation 4] spy opens the 2004-161955 communique
[patent documentation 5] spy opens the 2004-184443 communique
[patent documentation 6] spy opens the 2004-231736 communique
[patent documentation 7] spy opens the 2004-231737 communique
[patent documentation 8] spy opens the 2004-156015 communique
[patent documentation 9] spy opens the 2004-244499 communique
[patent documentation 10] spy opens the 2002-249741 communique
[patent documentation 11] spy opens the 2004-53759 communique
[patent documentation 12] spy opens the 2002-23663 communique
Summary of the invention
[problem that invention will solve]
Conduct in the past has the self adhesive tape or the sheet of reflectivity and/or opacifying property, when be used for liquid crystal display mode block assembly and back light unit fixedly the time, usually use self adhesive tape or sheet (being also referred to as " reflection opacifying property self adhesive tape or sheet " sometimes) with reflectivity and/or opacifying property, described self adhesive tape or sheet are to have the structure that has formed binder layer at least simultaneously (single face or the two sides) of body material, and have reflecting layer and/or light shield layer.Such reflection opacifying property self adhesive tape or sheet use body material that polyester body material plastics such as (body materials that polyethylene terephthalate is made etc.) make as body material usually, and are in the extremely low state of thermal conductivity.
On the other hand, liquid crystal display mode block assembly and back light unit heating.Therefore, as reflection opacifying property self adhesive tape or sheet, requiring conduction is the heat of cause with liquid crystal display mode block assembly and back light unit etc., and the reflection opacifying property self adhesive tape or the sheet of the function of additional heat release outside the system.
In addition, the bonding plane of reflection opacifying property self adhesive tape or sheet does not have dielectric bonding plane (non-conductive bonding plane) in order electronic units such as liquid crystal display mode block assembly not to be brought electric injury, preferably to become.
Therefore, the objective of the invention is to, provide to have the heat release function, and have the self adhesive tape or the sheet of reflectivity and/or opacifying property.
Another object of the present invention is, provides to have the heat release function, has non-conductive bonding plane simultaneously, and has the self adhesive tape or the sheet of reflectivity and/or opacifying property.
[solving the means of problem]
What the inventor etc. furtherd investigate to achieve these goals found that, uses the metal system body material with specific thicknesses as body material, can be to self adhesive tape or the additional excellent thermal conductivity function of sheet with reflectivity and/or opacifying property.The present invention finishes with regard to being based on these discoveries.
Promptly, self adhesive tape with reflectivity and/or opacifying property of the present invention or sheet are that at least one mask at body material has binder layer, and the reflectivity that has at least one side is more than 60% and/or transmitance is the self adhesive tape with reflectivity and/or opacifying property or the sheet of the characteristic below 0.3%, it is characterized in that body material is that thickness is the above metal system body materials of 3 μ m.
As above-mentioned metal system body material, preferable alloy paper tinsel, preferred especially aluminum body material.In addition, metal system body material can be the metal system body material that black layer is arranged at least one mask.At least the binder layer of one side of body material preferably contains the binder layer of thermal conductivity compound.
Light shield layer preferably is the black layer of black.In addition, also can be the binder layer that is black.The white layer that the reflecting layer preferably is white in color in addition, also can be the binder layer that is white in color.
Such reflection opacifying property self adhesive tape or sheet go for the fixing of liquid crystal display mode block assembly and back light unit.
In addition, the present invention also provides a kind of liquid crystal indicator, this device is the liquid crystal indicator with liquid crystal display mode block assembly and back light unit, it is characterized in that, liquid crystal display mode block assembly and back light unit are fixed by above-mentioned reflection opacifying property self adhesive tape or sheet.
[effect of invention]
According to self adhesive tape or the sheet with reflectivity and/or opacifying property of the present invention,, therefore has the heat release function owing to have said structure.In addition, has non-conductive bonding plane.Therefore, the self adhesive tape with reflectivity and/or opacifying property or the sheet of the application of the invention can make outside the exothermic heat auto levelizer in the device with heating element, thereby improve the stability of device.
Description of drawings
Fig. 1 is illustrated in when measuring thermal conductivity the synoptic diagram of the state that is provided with of the sample in the thermal conductivity determinator.
[nomenclature]
The heater section of 1 upside (upper portion heater)
2 thermometers
3 samples
4 thermometers
5 heat flowmeters (calorimeter)
6 thermometers
The heater section of 7 downsides (lower heater)
8 heat sinks
The cold machine part of 9 coolings
10 protection heater sections (protection heater section)
11 protection heater sections (protection heater section)
The travel direction of 12 heat
Embodiment
Reflection opacifying property self adhesive tape of the present invention or sheet (self adhesive tape or sheet with reflectivity and/or opacifying property) have following feature: at least one mask at body material has binder layer, and having at least, the reflectivity of one side is more than 60%, and/or transmitance is the characteristic below 0.3%, in addition, body material is that thickness is the above metal system body materials of 3 μ m.
Like this, because reflection opacifying property self adhesive tape or sheet use the metal system body material with specific thicknesses as body material, therefore, can in metal system body material, carry out heat conduction in the heat that the system internal heat generation produces, thereby heat release is outside system.Therefore, when using above-mentioned reflection opacifying property self adhesive tape or sheet, the heat that produces in the device internal heat generation can not be accumulated in the device, effectively outside the heat release auto levelizer, damage (damage of heat) can be suppressed or prevent, thereby the stability of device can be significantly improved owing to the hot device that causes.
In addition, reflection opacifying property self adhesive tape of the present invention or sheet have following characteristic: single face or two sides at body material have binder layer, and the reflectivity of one side is more than 60% at least, and/or transmitance is below 0.3%.Reflection opacifying property self adhesive tape or sheet have the reflectivity of one side at least when being characteristic more than 60%, are the reflectivity of the face more than 60% as reflectivity, as long as be (for example, 60～100%) more than 60%, then be not particularly limited, but high more good more.In reflection opacifying property self adhesive tape or sheet, be the reflectivity of the face more than 60% as reflectivity, preferably (be more preferably more than 80%) more than 70%.
In addition, the reflectivity (diffuse reflectance) of the predetermined surface in reflection opacifying property self adhesive tape or the sheet (%), the spectrophotometer (device name " MPS-2000 ") that can use Shimadzu Seisakusho Ltd. to make, from the light of face one side (face one side of regulation) the illumination wavelength 550nm of reflection opacifying property self adhesive tape or sheet, try to achieve by the face intensity of light reflected of measuring illuminated above-mentioned light.
In addition, reflection opacifying property self adhesive tape or sheet have transmitance when being characteristic 0.3% below, and the transmitance as reflecting opacifying property self adhesive tape or sheet as long as be (0～0.3%) below 0.3%, then is not particularly limited, but low more good more.As the transmitance of reflection opacifying property self adhesive tape or sheet, preferably (be more preferably below 0.05%) below 0.1%, wherein, preferred (particularly below 0.01%) below 0.03%.
In addition, the transmitance (%) of reflection opacifying property self adhesive tape or sheet can be by the spectrophotometer (device name " U4100 type spectrophotometer ") that uses the Hitachi to make, light from a face one side illumination wavelength 550nm of reflection opacifying property self adhesive tape or sheet, mensuration penetrates into the light intensity of another face one side, tries to achieve thus.
(metal system body material)
Reflection opacifying property self adhesive tape of the present invention or sheet used thickness are that the above metal system body material (tinsel etc.) of 3 μ m is as body material.As the thickness of metal system body material, as long as be more than the 3 μ m, then be not particularly limited, for example, can suitably select from the scope of 5～150 μ m (preferred 10～100 μ m are more preferably 15～75 μ m).
In addition, on nonmetal system body material (for example, plastics system body material), metal evaporation layer by metal evaporation method evaporation is generally less than 1 μ m (for example, 0.01～0.1 μ m) owing to thickness, therefore, thermal conductivity is low, can get rid of from the metal system body material more than thickness is 3 μ m., for example, make the thickness of metal evaporation layer reach 3 μ m when above by forming which floor metal evaporation layer, it is the above metal system body material uses of 3 μ m that this metal evaporation layer can be used as thickness.Therefore, thickness is that also can be included in thickness be in the above metal system body material of 3 μ m to the above metal evaporation layer of 3 μ m.
As such metal system body material,, then be not particularly limited so long as thickness is the above metal system body materials of 3 μ m.As metal system body material material or raw material, can use metallic element simple substance or alloy etc. only to comprise metallic substance of metallic element etc.Particularly,, can enumerate as the metallic element in the metallic substance that constitutes by metallic element simple substance, for example, periodictable 1 family's elements such as lithium, sodium, potassium, rubidium, caesium; Periodictable 2 family's elements such as magnesium, calcium, strontium, barium; Scandium, yttrium, lanthanon (lanthanum, cerium etc.), actinide elements periodictable 3 family's elements such as (actiniums etc.); Periodictable 4 family's elements such as titanium, zirconium, hafnium; Periodictable 5 family's elements such as vanadium, niobium, tantalum; Periodictable 6 family's elements such as chromium, molybdenum, tungsten; Periodictable 7 family's elements such as manganese, technetium, rhenium; Periodictable 8 family's elements such as iron, ruthenium, osmium; Periodictable 9 family's elements such as cobalt, rhodium, iridium; Periodictable 10 family's elements such as nickel, palladium, platinum; Periodictable 11 family's elements such as copper, silver, gold; Periodictable 12 family's elements such as zinc, cadmium, mercury; Periodictable 13 family's elements such as aluminium, gallium, indium, thallium; Periodictable such as tin, lead 14 family's elements; Periodictable such as antimony, bismuth 15 family's elements etc.On the other hand, as alloy, can enumerate, for example, stainless steel, copper-nickel alloy, brass, nickel-chromium alloy, iron nickel alloy, zinc-nickel alloy, gold-copper alloy, tin-lead alloy, silver-tin-lead alloy, nickel-chromium-ferro alloy, copper-manganese-nickelalloy, nickel-manganese-iron alloy etc.Two or more use alone or in combination of these metallic substance.
As metallic substance, aluminium, copper, silver, gold, iron, nickel, stainless steel are suitable, wherein, and preferred aluminium, copper (particularly aluminium).Therefore, as metal system body material, can preferably use aluminum body material, copper body material (particularly aluminum body material).
Metal system body material can have individual layer, multiwalled form arbitrarily.
In metal system body material, as required, for example can also contain known additives such as weighting agent, fire retardant, anti-aging agent, antistatic agent, tenderizer, UV light absorber, oxidation inhibitor, softening agent, tensio-active agent etc.
The formation method of metal system body material is not particularly limited, can enumerate, for example, calendering process or electrolysis process etc.
In the present invention, as metal system body material, can use the metal system body material (having) that black layer is arranged at least one mask to being called " the metal system body material that has black layer ".Certainly, importantly, the thickness that has the metal system body material of black layer is more than the 3 μ m.The metal system body material that has black layer like this can be used as light shield layer (particularly transmitance is the light shield layer below 0.3%) and contains and have the metal system body material use of the incorporate light shield layer of metal system body material of excellent thermal conductivity.Certainly, can also form one deck or two layers or more light shield layer or opacifying property binder layer etc. containing on the metal system body material of light shield layer.
The formation method that has the metal system body material of black layer, be not particularly limited, can enumerate, for example, bristle rolling method, spraying method, electrostatic coating method, electrolysis cladding process, powder coated method, baking vanish method, letterpress method, woodburytype, porous printing method etc.
In addition, the black that uses when having the metal system body material of black layer as manufacturing is colorant, so long as can be colorant attached to the black on the metal system body material, then be not particularly limited, and for example, can preferably use inorganic black is colorant.Particularly, as black is colorant, can enumerate, for example, carbon black (furnace treated black, thermally oxidized black, Shawinigan black, pyrolytic carbon black, dim etc.), graphite, cupric oxide, Manganse Dioxide, nigrosine, perylene black (ペ リ レ Application Block ラ Star Network), titanium is black, phthalocyanine is black, gac, ferrite (non magnetic ferrite, magnetic ferrite etc.), magnetite, chromic oxide, ferric oxide, molybdenumdisulphide, chromium coordination compound, composite oxides class black pigment etc.Black is colorant two or more use alone or in combination.
(reflecting layer)
In reflection opacifying property self adhesive tape of the present invention or sheet, when the reflectivity of a face is 60% when above, has the reflectivity that is used to make a face and is the reflecting layer more than 60%.As the reflecting layer, importantly, the reflectivity with face of the regulation that can make reflection opacifying property self adhesive tape or sheet is the reflectivity more than 60%.Therefore, same as the reflectivity in reflecting layer with the reflectivity of reflection opacifying property self adhesive tape or sheet, importantly be (60%～100%) more than 60%, preferably (be more preferably more than 80%) more than 70%, wherein more preferably more than 85%.
As such reflecting layer, get final product so long as bring into play reflexive layer, for example, can be the layer arbitrarily of binder layer, body material, resin layer, ink lay (printed layers etc.) etc.In addition, owing to make the luminous reflectance on the face that is radiated at reflection opacifying property self adhesive tape or sheet, therefore, the reflecting layer is as long as be form formation 60% or more with the reflectivity of a face of self adhesive tape or sheet, for example, can on a face of reflection opacifying property self adhesive tape or sheet, form, also can form with the form of inner face one side that is positioned at layer with transparency (for example, transparent adhesives layer or transparent body material etc.) with the form of exposing.In addition, when reflection opacifying property self adhesive tape or sheet had light shield layer as follows, the reflecting layer preferably formed on the face with respect to body material one side of light shield layer.
In addition, the reflecting layer can form by bringing into play reflexive various material (binder composition, resin combination, ink composite etc.).
As such reflecting layer, can enumerate, for example, the white layer that is white in color or be the silver color layer etc. of silver color, the preferred white layer that is white in color of using.In white layer, said white is meant basically, with L *a *b *The L of colour system regulation *It is the white color system color of (87～100) more than 87 [preferred (90～100) more than 90, be more preferably (92～100) more than 92].In addition, with L *a *b *The a of colour system regulation *Or b *Can be respectively according to L *Value suitably select.As a *Or b *, for example, the both is preferred-10～10, and () scope wherein ,-5～5, preferred especially both is 0 or is almost 0 (2～2 scopes).
In addition, said silver color is meant basically, with L *a *b *The L of colour system regulation *The silver color of (preferred 72～88, be more preferably 75～85) is color to be 70～90.In addition, with L *a *b *The a of colour system regulation *Or b *Can be respectively according to L *Value suitably select.As a *Or b *, for example, the both is preferred-10～10, and () scope wherein ,-5～5, preferred especially both is 0 or is almost 0 (2～2 scopes).
In addition, in the present invention, with L *a *b *The L of colour system regulation *, a *, b *Can pass through color colour-difference meter (trade(brand)name " CR-200 ", the manufacturing of ミ ノ Le company; The color colour-difference meter) mensuration is tried to achieve.In addition, L *a *b *Colour system is the color space that International Commission on Illumination (CIE) was recommended in 1976, is meant to be called CIE1976 (L *a *b *) color space of colour system.In addition, L *a *b *Colour system is defined as JIS Z 8729 in Japanese Industrial Standards.
Reflecting layer as such white layer or silver color layer etc., for example, can be by mainly containing the white color system colorant as the white color system ink composite of colorant or mainly to contain silver color be colorant as the silver color of colorant is that ink composite forms, but when being formed directly on the above-mentioned metal system body material, preferred white resin (particularly white color system thin film layer) or silver color resin (particularly silver color is thin film layer).Such white color system resin layer can be enumerated, the resin layer that is formed by the resin combination that contains the white color system resin or resin layer of being formed by the resin combination that contains the white color system colorant etc.In addition, can to enumerate by containing silver color be resin layer of forming of the resin combination of colorant etc. to the silver color resin.
In addition, be colorant as white color system colorant or silver color, can be colorant (tinting material) arbitrarily such as pigment, dyestuff, but preferably use pigment.Particularly, as the white color system colorant, can enumerate, for example, titanium oxide (rutile titanium dioxide, titanium dioxide such as anatase titanium dioxide), zinc oxide, aluminum oxide, silicon oxide, zirconium white, magnesium oxide, calcium oxide, stannic oxide, barium oxide, Cs2O, yttrium oxide, magnesiumcarbonate, lime carbonate (light calcium carbonate, water-ground limestone etc.), barium carbonate, zinc carbonate, aluminium hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, pure aluminium silicate, Magnesium Silicate q-agent, Calucium Silicate powder, barium sulfate, calcium sulfate, barium stearate, zinc white, zinc sulphide, talcum, silicon-dioxide, aluminum oxide, clay, potter's clay, titanium phosphate, mica, gypsum, white carbon black, diatomite, wilkinite, lithopone, zeolite, sericite, inorganic white color system colorants such as aquation halloysite, or acrylic resin particle, the polystyrene resins particle, the polyurethanes resin particle, the amides resin particle, the polycarbonate resin particle, the polysiloxane resin particle, urea-formalin resin particle, organic white color system colorant such as melamine resin particle etc.As the white color system colorant, can use white dyes, as this white dyes, can from known white dyes, suitably select.Two or more use alone or in combination of white color system colorant.
In addition, be colorant as silver color, can enumerate, for example, silver, aluminium etc.Silver color is colorant two or more use alone or in combination.
Be used to form the ink composite (white color system ink composite or silver color are ink composite etc.) in reflecting layer, except colorant, optionally can contain tackiness agent, dispersion agent or solvent etc.In addition, as tackiness agent, be not particularly limited, can enumerate, for example, polyurethanes resin, phenolic resinoid, redix, urea melamine resinoid, the polysiloxane resinoid, phenoxy resin, methacrylic resin, acrylic resin, polyarylate resin, polyester resin (polyethylene terephthalate etc.), polyolefin resin (polyethylene, polypropylene, ethylene-propylene copolymer etc.), polystyrene resins (polystyrene, styrene-acrylonitrile copolymer, styrene-butadiene copolymer, styrene-maleic anhydride copolymer, acrylonitrile-butadiene-styrene resin etc.), polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, Vinyl Acetate Copolymer, polyvinylidene chloride, polycarbonate, cellulose family (rhodia resin, ethyl cellulose resin etc.), known resin (thermoplastic resin such as polyacetal, thermosetting resin or light-cured resin etc.) etc.Tackiness agent two or more use alone or in combination.
In addition, as being used to form white color system resin layer (particularly white color system thin film layer), or resin (the white color system resin in the resin combination of silver color resin (particularly silver color is thin film layer), and the resin of other colors such as transparent resin etc.), can enumerate, for example, polyester (polyethylene terephthalate, PEN, polybutylene terephthalate, PBN etc.), polyolefine (polyethylene, polypropylene, ethylene-propylene copolymer etc.), polyvinyl alcohol, polyvinylidene chloride, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, Vinyl Acetate Copolymer, polymeric amide, polyimide, cellulose family, fluorine-type resin, polyethers, polystyrene resins (polystyrene etc.), polycarbonate, polyethersulfone etc.In addition, when using white color system colorant or silver color to be colorant,, preferably use transparent resin as resin.Resin two or more use alone or in combination.
In addition, in the reflecting layer, the silver color layer can also utilize that to adopt silver or aluminium etc. can present silver color be that the vapour deposition method of the metal ingredient of color forms.As vapour deposition method, can adopt decompression vapour deposition method (vacuum vapour deposition), physical sputtering method, chemical sputtering method etc.
The reflecting layer can have individual layer, multiwalled form arbitrarily, but from improving reflexive viewpoint more, preferably has the multiwalled form.Therefore, reflection opacifying property self adhesive tape or sheet preferably have the reflecting layer (the particularly white layer of multilayered structure) of multilayered structure.In addition, when the reflecting layer has the multiwalled form,,, for example, can suitably select preferred 2～6 (be more preferably 2～4, particularly 2) from 2～10 scope so long as get final product more than 2 or 2 as the number of plies in reflecting layer.
In addition, when the reflecting layer has the multilayer form, importantly, adjust all reflectivity in reflecting layer of multilayer form, rather than the reflectivity in the reflecting layer of each layer, making the reflectivity of reflection opacifying property self adhesive tape or sheet is more than 60%.
Thickness (reflecting layer is the occasion of multilayered structure, is all thickness in the reflecting layer of multilayered structure) as the reflecting layer is not particularly limited, and for example, can suitably select from the scope of 5～150 μ m (preferred 10～100 μ m).In addition, as the reflecting layer, the thickness of the silver color layer that is formed by vapour deposition method is not particularly limited, and for example, can be 0.3～2 μ m (preferred 0.4～1 μ m is more preferably 0.4～0.5 μ m).
In addition, in the present invention, metal system body material is aluminum body material or silvery body material etc. when being the metal system body material of silver color, can utilize the metal system body material that is silver color as the silver color layer as the reflecting layer.In addition, metal system body material is copper body material or gold system body material etc. when not being the metal system body material of silver color, as the silver color layer as the reflecting layer, can be that employing silver or aluminium etc. can present the evaporation layer that silver color is the metal ingredient of color.
In addition, in the present invention, binder layer is the occasion of binder layer (white binder layer) that is white in color or the binder layer (silver color binder layer) that is silver color, can use white binder layer as white layer, can also use the silver color binder layer as silver color layer as the reflecting layer as the reflecting layer.
In the present invention, the reflecting layer can be body material (that is reflectivity body material), binder layer (that is reflectivity binder layer), be arranged on the body material the layer etc. any.As above-mentioned reflectivity body material, can use the metal system body material that is silver color, preferred aluminum body material.In addition, as the reflectivity binder layer, the preferred white binder layer.In addition, as the reflecting layer that is arranged on the body material, the preferred white resin.
In addition, when the reflecting layer had the multilayer form, the layer as containing in the reflecting layer of multilayer form can contain reflectivity body material or reflectivity binder layer.Particularly, layer structure as the reflecting layer, can enumerate, for example, by the layer structure that constitutes as the reflectivity body material (aluminum body material etc.) of body material and the one deck that on this reflectivity body material, forms or two layers or more reflecting layer white color system resin layers such as (etc.) white color system thin film layers, by the layer structure that constitutes as the reflectivity body material (aluminum body material etc.) of body material and the one deck that on this reflectivity body material, forms or two layers or more reflecting layer white color system resin layers such as (etc.) white color system thin film layers and the reflectivity binder layer (white binder layer etc.) that on this reflecting layer, forms as binder layer, by the layer structure that constitutes as the reflectivity body material (aluminum body material etc.) of body material and the reflectivity binder layer (white binder layer etc.) that on this reflectivity body material, forms etc. as binder layer.
In addition, the reflecting layer also can have the multilayer form that is formed by white layer and silver color layer.Like this, when the reflecting layer has the occasion of white layer and silver color layer, for example, at least one layer in white layer and the silver color layer can be reflectivity body material or reflectivity binder layer.Particularly, as mentioned above, can enumerate, the silver color layer is the aluminum body material as body material, white layer is that the multilayer form of structure or the silver color layer of white color system resin layer is the aluminum body material as body material, and white layer is as the multilayer form of the structure of the white binder layer of binder layer etc.
The formation method in reflecting layer is not particularly limited, and can suitably select from the formation method in known reflecting layer according to the kind in reflecting layer or layer structure etc.Particularly, for example, when the reflecting layer forms and is arranged on white color system resin layer on the body material by resin combination that contains the white color system resin or the resin combination that contains the white color system colorant, formation method as the white color system resin layer, can enumerate, use is used to form the resin combination of white color system resin layer, utilizes forming methods such as extrusion moulding, inflation, calendering formation to be shaped to sheet, and will the method for this flaky resin layer lamination on metal system body material etc.In addition, when the reflecting layer is the silver color layer, as mentioned above, also can form silver color layer by the method for utilizing vapour deposition method as the reflecting layer.Certainly, the reflecting layer is when containing the reflection multilayer layer of reflectivity body material or reflectivity binder layer, can form the reflecting layer by the method that aforesaid method has been made up in utilization.
(light shield layer)
When the transmitance of reflection opacifying property self adhesive tape of the present invention or sheet is 0.3% when following, has the transmitance that is used to make reflection opacifying property self adhesive tape or sheet and is the light shield layer below 0.3%.As light shield layer, importantly has the transmitance that can make reflection opacifying property self adhesive tape or sheet and is the transmitance below 0.3%.Therefore, as the transmitance of light shield layer, same with the transmitance of reflection opacifying property self adhesive tape or sheet, importantly be (0～0.3%) below 0.3%, preferably (be more preferably below 0.05%) below 0.1%, wherein, (particularly below 0.01%) is suitable below 0.03%.
In addition, the transmitance of light shield layer is owing to be equivalent to reflect the transmitance (or consistent) of opacifying property self adhesive tape or sheet, therefore, even from reflection opacifying property self adhesive tape or sheet, do not separate and take out light shield layer, by measuring the transmitance of reflection opacifying property self adhesive tape or sheet, also can obtain the transmitance of light shield layer.
As such light shield layer, get final product so long as can bring into play the layer of opacifying property, for example, can be layer arbitrarily such as binder layer, body material, resin layer, ink lay (printed layers etc.).In addition, light shield layer can be formed by the various materials that can bring into play opacifying property (binder composition, resin combination, ink composite etc.).
In the present invention, as light shield layer, preferably be the black layer of black.In black layer, said black is meant basically, with L *a *b *The L of colour system regulation *The black that is (0～35) below 35 or 35 [(0～30) below preferred 30 or 30, be more preferably below 25 or 25 (0～25)] is color.In addition, with L *a *b *The a of colour system regulation *Or b *Can be respectively according to L *Value suitably select.As a *Or b *, for example, the both is preferred-10～10, and () scope wherein, preferred-5～5, preferred especially both is 0 or is almost 0 (2～2 scopes).
Such light shield layers such as black layer, for example, can be ink composite or to have mixed cyan be that colorant (bluish-green colour system colorant), pinkish red colour system colorant (purple colour system colorant) and yellow are that mixed ink composition of colorant (Huang is a colorant) etc. forms by mainly containing the black of black pigment as colorant, but when being formed directly on the above-mentioned metal system body material, preferred black resin (particularly black is thin film layer).Such black resin, can enumerate by containing black is resin layer of forming of the resin combination of colorant etc.
In addition, light shield layer such as black layer can be by by to contain cyan be the resin layer that forms of the resin combination of colorant and the resin layer that forms by the resin combination that contains pinkish red colour system colorant and be that the multilayered structure of the resin layer that forms of the resin combination of colorant constitutes by containing yellow.
In addition, as these various colorants, can be colorant (tinting material) arbitrarily such as pigment, dyestuff, but can preferably use pigment.
Particularly, as black is colorant, can enumerate, for example, carbon black (furnace treated black, thermally oxidized black, Shawinigan black, pyrolytic carbon black, dim etc.), graphite, cupric oxide, Manganse Dioxide, nigrosine, perylene black (ペ リ レ Application Block ラ Star Network), titanium is black, phthalocyanine is black, gac, ferrite (non magnetic ferrite, magnetic ferrite etc.), magnetite, chromic oxide, ferric oxide, molybdenumdisulphide, chromium coordination compound, composite oxides class black pigment, the organic black pigment of anthraquinone class etc.Black is colorant two or more use alone or in combination.
In cyan is in the colorant, as pigment (cyan series pigments), can enumerate, for example, C.I. Pigment blue-1, C.I. Pigment blue-2, C.I. Pigment blue-3, C.I. Pigment blue-15, C.I. Pigment blue-15:1, C.I. Pigment blue-15:2, C.I. Pigment blue-15:3, C.I. Pigment blue-15:4, C.I. Pigment blue-15:5, C.I. Pigment blue-15:6, C.I. Pigment blue-16, C.I. Pigment blue-17, C.I. Pigment blue-17:1, C.I. Pigment blue-18, C.I. Pigment blue-22, C.I. Pigment blue-25, C.I. Pigment blue-56, C.I. Pigment blue-60, C.I. Pigment blue-63, C.I. Pigment blue-65, C.I. Pigment blue-66, C.I. vat blue-4, C.I. vat blue-60, C.I. Pigment green-7 etc.In addition, in cyan is in the colorant, as dyestuff (cyan based dye), can enumerate, for example, C.I. solvent blue-25, C.I. solvent blue-36, C.I. solvent blue-60, C.I. solvent blue-70, C.I. solvent blue-93, C.I. solvent blue-95, C.I. acid blue-6, C.I. acid blue-45 etc.
In addition, in pinkish red colour system colorant, as pigment (magenta series pigments), can enumerate, for example, the C.I. Pigment red 1, C.I. Pigment red 2, C.I. pigment red 3, C.I. pigment red 4, C.I. Pigment red 5, C.I. Pigment red 6, C.I. Pigment red 7, C.I. pigment Red 8, C.I. Pigment Red 9, C.I. Pigment red 10, C.I. Pigment red 11, C.I. Pigment red 12, C.I. Pigment red 13, C.I. Pigment red 14, C.I. Pigment red 15, C.I. Pigment red 16, C.I. Pigment red 17, C.I. Pigment red 18, C.I. Pigment red 19, C.I. pigment red 21, C.I. Pigment red 22, C.I. Pigment red 23, C.I. pigment red 30, C.I. pigment red 31, C.I. pigment red 32, C.I. pigment red 37, C.I. pigment red 38, C.I. pigment red 39, C.I. pigment red 40, C.I. pigment red 41, C.I. pigment red 42, C.I. pigment red 4 8:1, C.I. pigment red 4 8:2, C.I. pigment red 4 8:3, C.I. pigment red 4 8:4, C.I. pigment red 49, C.I. pigment red 4 9:1, C.I. Pigment red 50, C.I. Pigment red 51, C.I. Pigment red 52, C.I. Pigment red 52:2, C.I. Pigment red 53:1, C.I. Pigment red 54, C.I. Pigment red 55, C.I. Pigment red 56, C.I. Pigment red 57:1, C.I. Pigment red 58, C.I. Pigment red 60, C.I. Pigment red 60:1, C.I. Pigment red 63, C.I. Pigment red 63:1, C.I. Pigment red 63:2, C.I. Pigment red 64, C.I. Pigment red 64:1, C.I. Pigment red 67, C.I. Pigment red 68, C.I. pigment red 81, C.I. pigment Red 83, C.I. pigment Red 87, C.I. pigment Red 88, C.I. pigment Red 89, C.I. Pigment Red 90, C.I. Pigment Red 92, C.I. Pigment red 101, C.I. Pigment red 104, C.I. Pigment red 105, C.I. Pigment red 106, C.I. Pigment red 108, C.I. Pigment Red 112, C.I. Pigment red 114, C.I. pigment red 122, C.I. pigment red 123, C.I. Pigment red 139, C.I. Pigment red 144, C.I. pigment red 146, C.I. Pigment red 147, C.I. pigment red 149, C.I. Pigment red 150, C.I. Pigment red 151, C.I. Pigment red 163, C.I. Pigment red 166, C.I. Pigment red 168, C.I. Pigment red 170, C.I. Pigment red 171, C.I. Pigment red 172, C.I. Pigment red 175, C.I. Pigment red 176, C.I. Pigment red 177, C.I. Pigment red 178, C.I. Pigment red 179, C.I. Pigment red 184, C.I. Pigment red 185, C.I. Pigment red 187, C.I. Pigment red 190, C.I. Pigment red 193, C.I. Pigment red 202, C.I. Pigment red 206, C.I. Pigment Red 207, C.I. Pigment red 209, C.I. pigment red 21 9, C.I. Pigment red 222, C.I. Pigment red 224, C.I. Pigment red 238, C.I Pigment red 245, C.I. pigment violet 3, C.I. pigment violet 9, C.I. pigment violet 19, C.I. pigment Violet 23, C.I. pigment violet 31, C.I. pigment violet 32, C.I. pigment violet 33, C.I. pigment violet 36, C.I. pigment violet 38, C.I. pigment violet 43, C.I. pigment violet 50, C.I. urn red 1, C.I. urn red 2, C.I. urn red 10, C.I. urn red 13, C.I. urn red 15, C.I. urn red 23, C.I. urn red 29, C.I. urn red 35 etc.
In pinkish red colour system colorant, as dyestuff (magenta based dye), can enumerate, for example, the C.I. solvent red 1, C.I. solvent red 3, C.I. solvent red 8, C.I. solvent red 23, C.I. solvent red 24, C.I. solvent red 25, C.I. solvent red 27, C.I. solvent red 30, C.I. solvent red 49, C.I. solvent red 52, C.I. solvent red 58, C.I. solvent red 63, C.I. solvent red 81, C.I. solvent red 82, C.I. solvent red 83, C.I. solvent red 84, C.I. solvent red 100, C.I. solvent red 109, C.I. solvent red 111, C.I. solvent red 121, C.I. solvent red 122, C.I. Disperse Red 9, C.I. solvent purple 8, C.I. solvent violet 13, C.I. solvent violet 14, C.I. solvent violet 21, C.I. solvent violet 27, C.I. 63 ,DIS,PER,SE ,Vio,let, 63 1, C.I. alkali red 1:1, C.I. alkaline red 2, C.I. alkaline red 9, C.I. alkali red 1:1 2, C.I. alkali red 1:1 3, C.I. alkali red 1:1 4, C.I. alkali red 1:1 5, C.I. alkali red 1:1 7, C.I. Basic Red 18, C.I. alkaline red 22, C.I. alkaline red 23, C.I. alkaline red 24, C.I. alkaline red 27, C.I. alkaline red 29, C.I. alkaline red 32, C.I. alkaline red 34, C.I. alkaline red 35, C.I. alkaline red 36, C.I. alkaline red 37, C.I. alkaline red 38, C.I. alkaline red 39, C.I. alkaline red 40, C.I. alkaline purple 1, C.I. alkaline purple 3, C.I. alkaline purple 7, C.I. alkaline purple 10, C.I. basic violet 14, C.I. alkaline purple 15, C.I. alkalescence purple 21, C.I. alkalescence purple 25, C.I. alkalescence purple 26, C.I. alkalescence purple 27, C.I. alkaline purple 28 etc.
In addition, in yellow is in the colorant, as pigment (yellow series pigments), can enumerate, for example, the C.I. pigment orange 31, C.I. pigment orange 43, C.I. Pigment Yellow 73 1, C.I. Pigment Yellow 73 2, C.I. Pigment Yellow 73 3, C.I. Pigment Yellow 73 4, C.I. Pigment Yellow 73 5, C.I. Pigment Yellow 73 6, C.I. Pigment Yellow 73 7, C.I. Pigment Yellow 73 10, C.I. Pigment Yellow 73 11, C.I. pigment Yellow 12, C.I. pigment yellow 13, C.I. pigment Yellow 14, C.I. Pigment Yellow 73 15, C.I. Pigment Yellow 73 16, C.I. pigment yellow 17, C.I. Pigment Yellow 73 23, C.I. Pigment Yellow 73 24, C.I. pigment yellow 34, C.I. Pigment Yellow 73 35, C.I. Pigment Yellow 73 37, C.I. Pigment Yellow 73 42, C.I. Pigment Yellow 73 53, C.I. Pigment Yellow 73 55, C.I. Pigment Yellow 73 65, C.I. Pigment Yellow 73 73, C.I. Pigment Yellow 73 74, C.I. Pigment Yellow 73 75, C.I. pigment yellow 81, C.I. pigment yellow 83, C.I. Pigment Yellow 73 93, C.I. Pigment Yellow 73 94, C.I. Pigment Yellow 73 95, C.I. Pigment Yellow 73 97, C.I. Pigment Yellow 73 98, C.I. Pigment Yellow 73 100, C.I. Pigment Yellow 73 101, C.I. Pigment Yellow 73 104, C.I. Pigment Yellow 73 108, C.I. Pigment Yellow 73 109, C.I. Pigment Yellow 73 110, C.I. Pigment Yellow 73 113, C.I. Pigment Yellow 73 114, C.I. Pigment Yellow 73 116, C.I. Pigment Yellow 73 117, C.I. pigment Yellow 12 0, C.I. pigment Yellow 12 8, C.I. pigment Yellow 12 9, C.I. pigment yellow 13 3, C.I. pigment yellow 13 8, C.I. pigment yellow 13 9, C.I. pigment yellow 147, C.I. Pigment Yellow 73 150, C.I. Pigment Yellow 73 151, C.I. Pigment Yellow 73 153, C.I. pigment yellow 154, C.I. Pigment Yellow 73 155, C.I. Pigment Yellow 73 156, C.I. Pigment Yellow 73 167, C.I. pigment yellow 17 2, C.I. pigment yellow 17 3, C.I. Pigment Yellow 73 180, C.I. Pigment Yellow 73 185, C.I. Pigment Yellow 73 195, C.I. vat yellow 1, C.I. vat yellow 3, C.I. vat yellow 20 etc.In yellow is in the colorant, as dyestuff (yellow based dye), can enumerate, for example, C.I. solvent yellow 19, C.I. solvent yellow 44, C.I. solvent yellow 77, C.I. solvent yellow 79, C.I. solvent yellow 81, C.I. solvent yellow 82, C.I. solvent yellow 93, C.I. solvent yellow 98, C.I. solvent yellow 103, C.I. solvent yellow 104, C.I. solvent yellow 112, C.I. solvent yellow 16 2 etc.
In the mixed ink composition, cyan is that colorant, pinkish red colour system colorant, yellow are that colorant can be distinguished two or more use alone or in combination.In addition, be that colorant, pinkish red colour system colorant and yellow are the blending ratio (perhaps cooperating ratio) of colorant as the cyan in the mixed ink composition, as long as the colour system color is (for example, with L darkly *a *b *The L of colour system regulation *, a *, b *For the black of above-mentioned scope is color), then be not particularly limited, can suitably select according to the kind of various colorants.Cyan in the mixed ink composition is that colorant, pinkish red colour system colorant and yellow are that containing of various colorants such as colorant is proportional, for example, with respect to the total amount of colorant, can be that colorant/pinkish red colour system colorant/yellow is that the scope of colorant=10～50 (weight %)/10～50 (weight %)/10～50 (weight %) [preferred 20～40 (weight %)/20～40 (weight %)/20～40 (weight %)] is suitably selected from cyan.
Be used to form the ink composite (black is ink composite or mixed ink composition etc.) of light shield layer, except colorant, optionally can contain tackiness agent, dispersion agent or solvent etc.In addition,, can enumerate as tackiness agent, for example, in the item of above-mentioned reflecting layer as cited tackiness agent of the tackiness agent that contains in the ink composite (white color system ink composite or silver color are ink composite etc.) etc.
In addition, in black resin (particularly black is thin film layer), as the resin that uses, for example, can be from the item of above-mentioned reflecting layer as selecting suitable resin (particularly transparent resin) to use in the cited resin of the resin of the resin combination that is used to form white color system resin layer (particularly white color system thin film layer) or silver color resin (particularly silver color is thin film layer).
In the present invention, light shield layer can have individual layer, any form of multiwalled, but preferably has the multiwalled form.Therefore, reflection opacifying property self adhesive tape or sheet preferably have the light shield layer (the particularly black layer of multilayered structure) of multilayered structure.Like this, by light shield layer is made multilayered structure, can improve the opacifying property of light shield layer more.In addition, when light shield layer has the multiwalled form,,, for example, can suitably select preferred 2～8 (being more preferably 2～6) as the number of plies of light shield layer from 2～10 scope so long as get final product more than 2.
In addition, when light shield layer has the multiwalled form, importantly, adjust all transmitances of light shield layer of multilayer form, rather than the transmitance of the light shield layer of each layer, making the transmitance of reflection opacifying property self adhesive tape or sheet is below 0.3%.
The thickness of light shield layer is not particularly limited.For example, when light shield layer is resin layer or printed layers (opacifying property printed layers), as the thickness (when light shield layer is multilayered structure, being all thickness of light shield layer) of resin layer or opacifying property printed layers, can select from the scope of 0.5～20 μ m (preferred 3～15 μ m are more preferably 5～10 μ m).In addition, when light shield layer is body material or binder layer,, select in the scope of the thickness of the body material that can enumerate from below or the thickness of binder layer as the thickness of light shield layer.
In addition, in the present invention, metal system body material is when having the metal system body material of black layer, and the black layer as light shield layer can utilize the metal system body material that has black layer.In addition, when binder layer was the binder layer (black binder layer) that is black, the black layer as light shield layer can use the black binder layer.
In the present invention, light shield layer can be body material (that is opacifying property body material), binder layer (that is opacifying property binder layer), be arranged on the body material the layer etc. any.As above-mentioned opacifying property body material, preferably have the metal system body material of black layer.In addition, as the opacifying property binder layer, preferred black binder layer.In addition, as the light shield layer that is arranged on the body material, preferred black resin.
In addition, when light shield layer had the multilayer form, the layer as containing in the light shield layer of multilayer form can contain opacifying property body material or opacifying property binder layer.Particularly, layer structure as light shield layer, can enumerate, for example, by the layer structure that constitutes as the opacifying property body material (having the metal system body material of black layer etc.) of body material and the one deck that on this opacifying property body material, forms or two layers or more light shield layer (black is black resin such as thin film layer etc.), by the layer structure that constitutes as the opacifying property body material (having the body material of black layer etc.) of body material and the one deck that on this opacifying property body material, forms or two layers or more light shield layer (black is black resin such as thin film layer etc.) and the opacifying property binder layer as binder layer (black binder layer etc.) that on this light shield layer, forms, by the layer structure that constitutes as the opacifying property body material (having the metal system body material of black layer etc.) of body material and the opacifying property binder layer as binder layer (black binder layer etc.) that on this opacifying property body material, forms etc.
The formation method of light shield layer is not particularly limited, and can suitably select from the formation method of known light shield layer according to the kind of light shield layer or layer structure etc.Particularly, for example, light shield layer is that the resin combination of colorant is when forming and being arranged on black resin on the metal matrix material by containing black, formation method as the black resin, can enumerate, use is used to form the resin combination of black resin, utilizes forming methods such as extrusion moulding, inflation, calendering formation to be shaped to sheet, and will the method for this flaky resin layer lamination on metal system body material etc.Certainly, light shield layer is when containing the multilayer light shield layer of opacifying property body material or opacifying property binder layer, can form light shield layer by the method that aforesaid method has been made up in utilization.
(other layer)
Reflection opacifying property self adhesive tape of the present invention or sheet can also have other layer.Reflection opacifying property self adhesive tape or sheet for example have, during as the black layer of light shield layer with as the white layer in reflecting layer or silver color layer, for example, the layer (particularly, can adjust opacifying property and reflectivity and adjust layer from the reflection shading that side direction opposite side stage ground changes respectively) that can between black layer and white layer or silver color layer, have the color that presents beyond black, white or the silver color.Like this, as other layer, by being set, the reflection shading adjusts layer (promptly between reflecting layer and light shield layer, form reflecting layer, reflection shading adjustment layer, light shield layer successively), reflection opacifying property self adhesive tape or sheet, can bring into play opacifying property in stage ground from light shield layer sideswipe layer side, and can be from reflecting layer side direction light shield layer offset section ground performance reflectivity.
In the layer of the color beyond presenting black, white and silver color, as the color beyond black, white and the silver color, so long as the color beyond black, white and the silver color, it can be color arbitrarily, can enumerate, for example, redness, blueness, yellow, green, yellow-green colour, orange, purple, grey, gold etc.In addition, as the color beyond the black and white, can be silver color or grey, in addition,, also can be white as the color beyond black and the silver color.
(binder layer)
As the tackiness agent that is used to form binder layer in reflection opacifying property self adhesive tape or the sheet, be not particularly limited, can enumerate, for example, known tackiness agents such as polyurethane binding, acrylic adhesives, rubber adhesive, polysiloxane-based tackiness agent, polyester tackiness agent, polyamide-based tackiness agent, epoxy adhesive, vinyl alkyl ethers class tackiness agent, fluorine class tackiness agent.Tackiness agent two or more use alone or in combination.In addition, tackiness agent can be the tackiness agent with any form, for example, can enumerate emulsion type binder, Solvent Adhesive, hot-melt type tackiness agent (Hotmelt Adhesive) etc.
As tackiness agent, can preferably use acrylic adhesives, rubber adhesive.Acrylic adhesives contains acrylic polymers as main component or base polymer.As acrylic polymers, be not particularly limited, as main composition monomer component (monomer main component), preferred (methyl) alkyl acrylate (alkyl acrylate, alkyl methacrylate) that uses.Particularly, as (methyl) alkyl acrylate, can enumerate, for example, (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) isopropyl acrylate, (methyl) butyl acrylate, (methyl) isobutyl acrylate, (methyl) sec-butyl acrylate, (methyl) tert-butyl acrylate, (methyl) vinylformic acid pentyl ester, (methyl) vinylformic acid isopentyl ester, (methyl) vinylformic acid peopentyl ester, (methyl) Ethyl acrylate, (methyl) vinylformic acid heptyl ester, (methyl) 2-EHA, (methyl) Octyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) vinylformic acid ester in the ninth of the ten Heavenly Stems, (methyl) vinylformic acid ester in the different ninth of the ten Heavenly Stems, (methyl) decyl acrylate, (methyl) isodecyl acrylate, (methyl) vinylformic acid undecane ester, (methyl) vinylformic acid dodecane ester etc.Two or more use alone or in combination of (methyl) alkyl acrylate.
As the monomer component that constitutes acrylic polymers, if with (methyl) alkyl acrylate is the monomer main component, then can use can with other the monomer component (being also referred to as " co-polymerized monomer composition " sometimes) of (methyl) alkyl acrylate copolymer.In addition, as (methyl) alkyl acrylate, preferably, use with the ratio more than the 50 weight % with respect to the monomer component total amount that constitutes acrylic polymers.The ratio of (methyl) alkyl acrylate with respect to the monomer component total amount that constitutes acrylic polymers, if during less than 50 weight %, is difficult to show the characteristic (binding property etc.) as acrylic polymers sometimes.
As the co-polymerized monomer composition, can be used for importing cross-linking set at acrylic polymers, perhaps be used to improve the cohesive force of acrylic polymers.Two or more use alone or in combination of co-polymerized monomer composition.
Particularly, as the co-polymerized monomer composition, in order in acrylic polymers, to import cross-linking set, can use the monomer component (particularly, being used for importing the monomer component that contains heat cross-linking functional group of the cross-linking set of heat cross-linking) that contains functional group at acrylic polymers.As the monomer component that contains such functional group, so long as can with (methyl) alkyl acrylate copolymer, and has monomer component as the functional group of cross-linking set, then be not particularly limited, can enumerate, for example, (methyl) vinylformic acid, methylene-succinic acid, Ba Dousuan, toxilic acid, fumaric acid, iso-crotonic acid etc. contain monomer or its acid anhydrides (maleic anhydride, itaconic anhydride etc.) of carboxyl; (methyl) vinylformic acid hydroxyalkyl acrylates such as (methyl) vinylformic acid 2-hydroxyl ethyl ester, (methyl) vinylformic acid 2-hydroxypropyl acrylate, (methyl) vinylformic acid 2-hydroxy butyl ester, and the monomer of hydroxyl such as vinyl alcohol, vinyl carbinol; (methyl) acrylamide, N, amides monomers such as N-dimethyl (methyl) acrylamide, N-butyl (methyl) acrylamide, N-methylol (methyl) acrylamide, N-hydroxymethyl-propane (methyl) acrylamide, N-methoxymethyl (methyl) acrylamide, N-butoxymethyl (methyl) acrylamide; (methyl) vinylformic acid ammonia ethyl ester, (methyl) vinylformic acid N, N-dimethylamino ethyl ester, (methyl) vinylformic acid tertiary butyl ammonia ethyl ester etc. contains amino monomer; (methyl) glycidyl acrylate, (methyl) vinylformic acid methyl glycidyl ester etc. contain the monomer of epoxy group(ing); Vinyl cyanide, methacrylonitrile etc. contain the monomer of cyano group; N-vinyl-2-Pyrrolidone, N-methyl ethylene pyrrolidone, N-vinyl pyridine, N-vinyl piperidone, N-vinyl pyrimidine, N-vinyl piperazine, N-vinylpyrazine, N-vinyl pyrrole, N-vinyl imidazole, N-vinyl  azoles, N-vinyl morpholine, N-caprolactam, N-(methyl) acryloyl morpholine etc. have the monomer of nitrogen atom ring etc.As the monomer component that contains functional group, can preferably use vinylformic acid etc. to contain monomer or its acid anhydrides of carboxyl.
In addition, as the co-polymerized monomer composition,, can use other co-polymerized monomer composition in order to improve the cohesive force of acrylic polymers.As other co-polymerized monomer composition, can enumerate, for example, vinyl ester monomers such as vinyl acetate, propionate; Styrene monomers such as vinylbenzene, substituted phenylethylene (alpha-methyl styrene etc.), Vinyl toluene; (methyl) vinylformic acid cycloalkyl ester [(methyl) cyclohexyl acrylate, cyclopentyl two (methyl) acrylate etc.] or (methyl) vinylformic acid norbornene ester, (methyl) isobornyl acrylate etc. contain (methyl) acrylate of non-aromatic ring; (methyl) aryl acrylate [(methyl) phenyl acrylate etc.], (methyl) vinylformic acid aryloxy alkyl ester [(methyl) phenoxyethyl acrylate etc.] or (methyl) vinylformic acid aralkyl ester [(methyl) benzyl acrylate] etc. contain (methyl) acrylate of aromatic nucleus; Olefin monomers such as ethene, propylene, isoprene, divinyl, iso-butylene; Vinylchlorid, vinylidene chloride, 2-(methyl) acrylyl oxy-ethyl isocyanic ester etc. contain the monomer of isocyanate groups; (methyl) vinylformic acid methoxyl group ethyl ester, (methyl) vinylformic acid ethoxy ethyl ester etc. contain the monomer of alkoxyl group; Methylvinylether, vinyl ethers monomers such as ethyl vinyl ether, and 1,6-hexylene glycol two (methyl) acrylate, ethylene glycol bisthioglycolate (methyl) acrylate, Diethylene Glycol two (methyl) acrylate, triethylene glycol two (methyl) acrylate, TEG two (methyl) acrylate, (gathering) ethylene glycol bisthioglycolate (methyl) acrylate, propylene glycol two (methyl) acrylate, (gathering) propylene glycol two (methyl) acrylate, neopentyl glycol two (methyl) acrylate, tetramethylolmethane two (methyl) acrylate, trimethylolpropane tris (methyl) acrylate, tetramethylolmethane three (methyl) acrylate, Dipentaerythritol six (methyl) acrylate, glycerine two (methyl) acrylate, epoxy acrylate, polyester acrylate, urethane acrylate, Vinylstyrene, butyl two (methyl) acrylate, polyfunctional monomers such as hexyl two (methyl) acrylate etc.
As rubber adhesive, can enumerate, with rubber constituents such as natural rubber, styrene isoprene styrene block copolymer (SIS) (SIS segmented copolymer), styrene-butadiene-styrene block copolymer (SBS segmented copolymer), styrene-ethylene butylene-styrene segmented copolymer (SEBS segmented copolymer), styrene butadiene rubbers, polyhutadiene, polyisoprene, polyisobutene, isoprene-isobutylene rubber, chloroprene rubber, silicon rubber, acrylonitrile-butadiene rubber, ethylene-propylene terpolymers as rubber adhesive of base polymer etc.
In addition, in tackiness agent, as required, can also contain, for example, linking agent, linking agent (Jiao Cha Knot close drug), known additive such as tackifying resin, weighting agent, fire retardant, anti-aging agent, antistatic agent, tenderizer, UV light absorber, oxidation inhibitor, softening agent, tensio-active agent etc.
Binder layer can have individual layer, any form of multiwalled.
In addition, binder layer is as the black layer of light shield layer (opacifying property binder layer) or as the white layer of reflecting layer (reflectivity binder layer) or the occasion of silver color layer, can also contain colorant corresponding to the color that presents (black is that colorant or white color system colorant, silver color are colorant etc.).Particularly, for example, it is colorant that the opacifying property binder layer can contain black, and in addition, can also contain cyan is that colorant, pinkish red colour system colorant and yellow are the mixing colorant of colorant.Such black is that colorant, cyan are that colorant, pinkish red colour system colorant, yellow are that black that colorant can be enumerated from above-mentioned light shield layer item is that colorant, cyan are that colorant, pinkish red colour system colorant, yellow are suitably to select in the colorant.In addition, for example, the reflectivity binder layer can contain the white color system colorant or silver color is colorant, and such white color system colorant or silver color are that white color system colorant or the silver color that colorant can be enumerated from the item of above-mentioned reflecting layer is suitably to select in the colorant to use.
Reflection opacifying property self adhesive tape of the present invention or sheet, since use liquid crystal display mode block assembly in said electronic machines such as " mobile phones " and back light unit fixedly the time etc., therefore, from the viewpoint of the electric injury of the electronic machine that suppresses or prevent to use, binder layer preferably has dielectric.Therefore, as the colorant that contains in the binder layer, expectation is used has dielectric colorant.As having dielectric colorant, can from the above-mentioned various colorants of enumerating, suitably select to have dielectric colorant and use.For example, have dielectric opacifying property binder layer, the black that can not use carbon black etc. to have electroconductibility is colorant, and is that colorant, pinkish red colour system colorant and yellow are that the mixing colorant of colorant forms by using cyan.
In addition, binder layer is not during as the black layer of light shield layer (opacifying property binder layer) or as the white layer of reflecting layer (reflectivity binder layer) or silver color layer, can preferably use the binder layer (being sometimes referred to as " transparent adhesive layer ") with transparency.
In the present invention, binder layer can also contain the thermal conductivity compound.That is, binder layer can be the binder layer (heat conductive adhesive layer) with thermal conductivity.Like this, when binder layer was the heat conductive adhesive layer, with body material, binder layer also can be brought into play thermal conductivity, thereby can improve the heat release function of reflection opacifying property self adhesive tape or sheet more.
As the thermal conductivity compound, so long as have the compound of thermal conductivity, then be not particularly limited, can use metal species compound, carbon black etc.Two or more use alone or in combination of thermal conductivity compound.
As metal species compound as the thermal conductivity compound, can be the metal species compound that metallic element simple substance or alloy etc. only comprise metallic element, can also be the metal species compound that contains metallic element and non-metallic element.In these metal species compounds,, suitably select in the metallic element that can from above-mentioned metal system body material item, enumerate to use as metallic element.
In addition, as the metal species compound that contains metallic element and non-metallic element, can enumerate, for example, metal oxides such as alundum, silicon-dioxide, zinc oxide, aluminum oxide, silicon oxide, titanium oxide, zirconium white, magnesium oxide, calcium oxide, stannic oxide, barium oxide, Cs2O, yttrium oxide, ferric oxide, cerium oxide; Metal nitrides such as aluminium nitride, boron nitride, silicon nitride, magnesium nitride, lithium nitride, chromium nitride, tungsten nitride, molybdenum nitride; Metallic carbide such as silicon carbide, norbide, zirconium carbide, tantalum carbide, titanium carbide, iron carbide; Metal hydroxidess such as aluminium hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide etc.
In the present invention, the viewpoint from the electric injury of the electronic machine that suppresses or prevent to use as the thermal conductivity compound, can preferably also have dielectric compound (having dielectric thermal conductivity compound) when having thermal conductivity.As having dielectric thermal conductivity compound, can from the above-mentioned thermal conductivity compound of enumerating, suitably select to have dielectric material (for example, metal oxides such as alundum, silicon-dioxide, zinc oxide, aluminum oxide; Metal nitrides such as aluminium nitride, boron nitride, silicon nitride; Metallic carbide such as silicon carbide, norbide; Metal hydroxidess such as aluminium hydroxide etc.) use.
In addition, in the present invention, when the thermal conductivity compound has shades of colour such as white or black, can also use as colorant with thermal conductivity.For example, the thermal conductivity compound (for example, alundum, silicon-dioxide etc.) of white can be used as the thermal conductivity compound and the white color system colorant uses, thereby can form the reflectivity binder layer with thermal conductivity.
Thickness as binder layer is not particularly limited, and for example, can suitably select from the scope of 2～100 μ m (preferred 5～80 μ m).
The formation method of binder layer is not particularly limited, for example, can enumerate, coating adhesive on the face of regulation, carry out drying or solidified method then as required or go up coating adhesive at partition (peeling liner), after carrying out drying as required or solidifying to form binder layer, this binder layer is fitted on the face of regulation and carries out method of transfer printing etc.In addition, when coating adhesive, can use coating machine commonly used (for example, intaglio plate roller coating machine, reverse roll coating machine, touch coating roll coating machine, dip roll coating machine, rod be coated with machine, knife coater, spraying machine etc.).
As mentioned above, because self adhesive tape of the present invention or sheet have metal system body material, therefore have as the form that has the self adhesive tape or the sheet of body material type.It is the above metal system body materials of 3 μ m that reflection opacifying property self adhesive tape or sheet have thickness, one or two binder layers go up forming with one side (single face or two sides) at least at above-mentioned metal system body material, and to have the reflectivity of one side at least be more than 60% and/or transmitance is a characteristic below 0.3%.Reflection opacifying property self adhesive tape or sheet, particularly, can enumerate, for example, the reflection opacifying property self adhesive tape or the sheet that have following layer structure (A1)～(A6), (B1)～(B7), (C1)～(C4), (D1)～(D4), (E1)～(E8), (F1)～(F7), (G1)～(G7), (H1)～(H6), (I1)～(I7).
Layer structure (A1): the layer structure that is the metal system body material/transparent adhesive layer of silver color
Layer structure (A2): transparent adhesive layer/the be layer structure of the metal system body material/transparent adhesive layer of silver color
Layer structure (A3): the layer structure that is the metal system body material/reflectivity binder layer of silver color
Layer structure (A4): transparent adhesive layer/the be layer structure of the metal system body material/reflectivity binder layer of silver color
Layer structure (A5): reflectivity binder layer/the be layer structure of the metal system body material/reflectivity binder layer of silver color
Layer structure (A6): the layer structure that forms one deck or two layers or more reflecting layer between metal system body material that is silver color in layer structure (A1)～(A5) and the binder layer on single face or two sides (transparent adhesive layer or reflectivity binder layer)
Layer structure (B1): the layer structure that is the metal system body material/opacifying property binder layer of silver color
Layer structure (B2): one deck or two layers or more reflecting layer/the be layer structure of the metal system body material/opacifying property binder layer of silver color
Layer structure (B3): transparent adhesive layer/the be layer structure of the metal system body material/opacifying property binder layer of silver color
Layer structure (B4): reflectivity binder layer/the be layer structure of the metal system body material/opacifying property binder layer of silver color
Layer structure (B5): transparent adhesive layer/one deck or two layers or more reflecting layer/the be layer structure of the metal system body material/opacifying property binder layer of silver color
Layer structure (B6): reflectivity binder layer/one deck or two layers or more reflecting layer/the be layer structure of the metal system body material/opacifying property binder layer of silver color
Layer structure (B7): the layer structure that forms one deck or two layers or more light shield layer between metal system body material that is silver color in layer structure (B1)～(B6) and the opacifying property binder layer
Layer structure (C1): the layer structure that is the metal system body material/opacifying property binder layer of silver color color in addition
Layer structure (C2): be the metal system body material/one deck of silver color color in addition or the layer structure of two layers or more light shield layer/opacifying property binder layer
Layer structure (C3): the layer structure of the metal system body material/opacifying property binder layer of the color beyond transparent adhesive layer/the be silver color
Layer structure (C4): the metal system body material/one deck of the color beyond transparent adhesive layer/the be silver color or the layer structure of two layers or more light shield layer/opacifying property binder layer
Layer structure (D1): the layer structure that is the metal system body material/reflectivity binder layer of silver color color in addition
Layer structure (D2): be the metal system body material/one deck of silver color color in addition or the layer structure of two layers or more reflecting layer/reflectivity binder layer
Layer structure (D3): the layer structure of the metal system body material/reflectivity binder layer of the color beyond transparent adhesive layer/the be silver color
Layer structure (D4): the metal system body material/one deck of the color beyond transparent adhesive layer/the be silver color or the layer structure of two layers or more reflecting layer/reflectivity binder layer
Layer structure (E1): the layer structure of the metal system body material/opacifying property binder layer of the color beyond the silver color of one deck or two layers or more reflecting layer/be
Layer structure (E2): the layer structure of the metal system body material/opacifying property binder layer of the color beyond the silver color of transparent adhesive layer/one deck or two layers or more reflecting layer/be
Layer structure (E3): the layer structure of the metal system body material/reflectivity binder layer of the color beyond one deck or two layers or more light shield layer/the be silver color
Layer structure (E4): the layer structure of the metal system body material/reflectivity binder layer of the color beyond transparent adhesive layer/one deck or two layers or more light shield layer/the be silver color
Layer structure (E5): the layer structure of the metal system body material/opacifying property binder layer of the color beyond reflectivity binder layer/the be silver color
Layer structure (E6): the layer structure that forms one deck or two layers or more light shield layer between metal system body material that is silver color color in addition in layer structure (E1)～(E2), (E5) and the opacifying property binder layer
Layer structure (E7): the layer structure that forms one deck or two layers or more reflecting layer between metal system body material that is silver color color in addition in layer structure (E3)～(E5) and the reflectivity binder layer
Layer structure (E8): the layer structure that has made up layer structure (E6) and layer structure (E7)
Layer structure (F1): have the metal system body material that has black layer of black layer/in the layer structure of the transparent adhesive layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (F2): have the metal system body material that has black layer of black layer/in the layer structure of the transparent adhesive layer of the side formation that does not form black layer of the metal system body material that has black layer at single face
Layer structure (F3): transparent adhesive layer/the have layer structure of the metal system body material/transparent adhesive layer that has black layer of black layer at single face
Layer structure (F4): have the metal system body material that has black layer of black layer/in the layer structure of the opacifying property binder layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (F5): the transparent adhesive layer that forms in the side that does not form black layer of the metal system body material that has black layer/have the metal system body material that has black layer of black layer/in the layer structure of the opacifying property binder layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (F6): have the metal system body material that has black layer of black layer/in the layer structure of the opacifying property binder layer of the side formation that does not form black layer of the metal system body material that has black layer at single face
Layer structure (F7): the opacifying property binder layer that forms in the side that does not form black layer of the metal system body material that has black layer/have the metal system body material that has black layer of black layer/in the layer structure of the transparent adhesive layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (G1): one deck that forms in the side that does not form black layer of the metal system body material that has black layer or two layers or more reflecting layer/have the metal system body material that has black layer of black layer/at single face in the layer structure of the transparent adhesive layer of the black layer one side formation of the metal system body material that has black layer
Layer structure (G2): one deck that forms in the side that does not form black layer of the metal system body material that has black layer or two layers or more reflecting layer/have the metal system body material that has black layer of black layer/at single face in the layer structure of the opacifying property binder layer of the black layer one side formation of the metal system body material that has black layer
Layer structure (G3): reflectivity binder layer/have the metal system body material that has black layer of black layer/in the layer structure of the transparent adhesive layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (G4): reflectivity binder layer/have the metal system body material that has black layer of black layer/in the layer structure of the opacifying property binder layer of the black layer one side formation of the metal system body material that has black layer at single face
Layer structure (G5): the layer structure that has formation one deck between the metal system body material that has black layer of black layer and transparent adhesive layer or the opacifying property binder layer or two layers or more light shield layer at the single face of layer structure (G1)～(G4)
Layer structure (G6): the layer structure that has formation one deck between the metal system body material that has black layer of black layer and the reflectivity binder layer or two layers or more reflecting layer at the single face of layer structure (G3)～(G4)
Layer structure (G7): the layer structure that has made up layer structure (G5) and layer structure (G6)
Layer structure (H1): the layer structure that has the metal system body material/transparent adhesive layer that has black layer of black layer on the two sides
Layer structure (H2): transparent adhesive layer/the have layer structure of the metal system body material/transparent adhesive layer that has black layer of black layer on the two sides
Layer structure (H3): the layer structure that has the metal system body material/opacifying property binder layer that has black layer of black layer on the two sides
Layer structure (H4): transparent adhesive layer/the have layer structure of the metal system body material/opacifying property binder layer that has black layer of black layer on the two sides
Layer structure (H5): opacifying property binder layer/the have layer structure of the metal system body material/opacifying property binder layer that has black layer of black layer on the two sides
Layer structure (H6): the two sides in layer structure (H1)～(H5) has the layer structure of formation one deck between the metal system body material that has black layer of black layer and the binder layer (transparent adhesive layer or opacifying property binder layer) or two layers or more light shield layer
Layer structure (I1): be the metal system body material of silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I2): the metal system body material of transparent adhesive layer/be silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I3): the metal system body material of reflectivity binder layer/be silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I4): have the metal system body material of the reflectivity binder layer of thermal conductivity/be silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I5): the metal system body material of opacifying property binder layer/be silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I6): the metal system body material of opacifying property binder layer/one deck or two layers or more light shield layer/be silver color/the have layer structure of the reflectivity binder layer of thermal conductivity
Layer structure (I7): metal system body material that is silver color in layer structure (I1)～(I6) and reflectivity binder layer or have between the conductive reflectivity binder layer layer structure in formation one deck or two layers or more reflecting layer
In addition, the form of flaky material that reflection opacifying property self adhesive tape or sheet can have lamination also can have the form that is rolled into the cylinder shape.
In addition, in reflection opacifying property self adhesive tape or sheet, the surface of binder layer (transparent adhesive layer, opacifying property binder layer, reflectivity binder layer etc.) can be protected by known partition (peeling liner).In addition; reflection opacifying property self adhesive tape or sheet are only when a mask of metal system body material has the structure that has formed binder layer; for example; can form the lift-off processing layer of handling by known stripping treatment agent (polysiloxane-based stripping treatment agent etc.) by surface (back side) at metal system body material; and the form that contacts with binder layer with this lift-off processing layer is rolled into the cylinder shape, protects the surface of binder layer thus.
Reflection opacifying property self adhesive tape of the present invention or sheet, when the reflectivity of a face is 60% when above, can preferably use as having reflexive self adhesive tape or sheet (reflectivity self adhesive tape or sheet), in addition, transmitance is 0.3% when following, can preferably use as self adhesive tape with opacifying property or sheet (opacifying property self adhesive tape or sheet), in addition, the reflectivity of a face is more than 60% and transmitance is 0.3% when following, can preferably use as self adhesive tape with reflectivity and opacifying property or sheet (reflectivity opacifying property self adhesive tape or sheet).Such reflection opacifying property self adhesive tape or sheet can be that the two sides is the self adhesive tape or the sheet (double-sided adhesive tape or sheet) of the form of bonding plane, also can be that just single face is the self adhesive tape or the sheet of the form of bonding plane.
Therefore, reflection opacifying property self adhesive tape of the present invention or sheet are useful as being used for fixing in said " mobile phone " or said " PDA " etc. the liquid crystal display mode block assembly in the liquid crystal indicator (LCD) (particularly small-sized liquid crystal indicator) that uses etc. and the reflection opacifying property self adhesive tape or the sheet (reflectivity self adhesive tape or sheet, opacifying property self adhesive tape or sheet, reflectivity opacifying property self adhesive tape or sheet) of back light unit.
In addition, liquid crystal indicator of the present invention has liquid crystal display mode block assembly and back light unit, liquid crystal display mode block assembly and back light unit have by above-mentioned reflection opacifying property self adhesive tape or sheet (promptly, at least one mask at body material has binder layer, and having at least, the reflectivity of one side is more than 60%, and/or transmitance is the feature below 0.3%, and in addition, body material is that thickness is the reflection opacifying property self adhesive tape or the sheet of the above metal system body material of 3 μ m) the fixed structure.In addition, above-mentioned reflection opacifying property self adhesive tape or sheet, reflectivity less than 60% when a face, the reflectivity of another face is 60% when above, can make the face of reflectivity less than 60% 1 side be positioned at liquid crystal display mode block assembly one side, make reflectivity is that the face of a side more than 60% is positioned at back light unit one side, and also can make the face of reflectivity less than 60% 1 side be positioned at back light unit one side, make reflectivity is that the face of a side more than 60% is positioned at liquid crystal display mode block assembly one side.
Embodiment
Below, based on embodiment the present invention is described in further detail, but the present invention is not subjected to any qualification of these embodiment.In addition, in an embodiment, transmitance (%), reflectivity (%) or use L *a *b *The L of colour system regulation *, a *, b *Try to achieve according to following measuring method respectively.
(measuring method of transmitance)
The spectrophotometer (device name " a U4100 type spectrophotometer ") that uses the Hitachi to make from the light of a face one side illumination wavelength 550nm of self adhesive tape or sheet, is measured the light intensity that penetrates into another face one side, obtains transmitance (%) thus.
(measuring method of reflectivity)
The spectrophotometer (device name " MPS-2000 ") that uses Shimadzu Seisakusho Ltd. to make, light to the face illumination wavelength 550nm of the white base material in self adhesive tape or the sheet (embodiment 1～2 or comparative example a 2) side, measure the face intensity of light reflected of illuminated above-mentioned light, obtain reflectivity (%) thus.
(L *, a *, b *Measuring method)
The color colour-difference meter (device name " CR-200 ") that uses ミ ノ Le company to make is measured with L *a *b *The L of colour system regulation *, a *, b *
(preparation example 1 of tackiness agent)
With respect to 100 parts by weight of acrylic acid base polymers (use 2-EHA: 70 weight parts, butyl acrylate: 30 weight parts, vinylformic acid: the ratio of 2 weight parts is carried out polymerization and the acrylic polymers that obtains), add 30 weight part polymerized rosin resinoids (trade(brand)name " ペ Application セ Le D125 ", famine river chemical industrial company makes), 5 weight part carbon blacks, add 2 weight part isocyanates linking agents (trade(brand)name " コ ロ ネ one ト L " again, Japanese polyurethane (Port リ ウ レ Application) industrial makes), preparation is the tackiness agent (black tackiness agent) of black.
(preparation example 2 of tackiness agent)
With respect to 100 parts by weight of acrylic acid base polymers (use 2-EHA: 70 weight parts, butyl acrylate: 30 weight parts, vinylformic acid: the ratio of 2 weight parts is carried out polymerization and the acrylic polymers that obtains), add 30 weight part polymerized rosin resinoids (trade(brand)name " ペ Application セ Le D125 ", famine river chemical industrial company makes), add 2 weight part isocyanates linking agents (trade(brand)name " コ ロ ネ one ト L " again, Japanese polyurethane (Port リ ウ レ Application) industrial makes), preparation has the tackiness agent (clear binder) of the transparency.
(preparation example 3 of tackiness agent)
With respect to 100 parts by weight of acrylic acid base polymers (use 2-EHA: 70 weight parts, butyl acrylate: 30 weight parts, vinylformic acid: the ratio of 2 weight parts is carried out polymerization and the acrylic polymers that obtains), add 30 weight part polymerized rosin resinoids (trade(brand)name " ペ Application セ Le D125 ", famine river chemical industrial company makes), the circular-arc alundum of 70 weight parts (trade(brand)name " AS-50 ", clear and electrician company makes), add 2 weight part isocyanates linking agents (trade(brand)name " コ ロ ネ one ト L " again, Japanese polyurethane (Port リ ウ レ Application) industrial makes), the tackiness agent (thermal conductivity white tackiness agent) that preparation has thermal conductivity and is white in color.
(embodiment 1)
It at thickness the black tackiness agent that coating is obtained by the preparation example 1 of tackiness agent on the face of aluminum body material of 25 μ m, dry, after forming the black binder layer of thickness 30 μ m, superimposed on this black binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, in addition, the clear binder that coating is obtained by the preparation example 2 of tackiness agent on the face that exposes of aluminum body material, dry, after forming the transparent adhesives layer (transparent adhesive layer) of thickness 30 μ m, superimposed on this transparent adhesive layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, obtains having transparent adhesive layer/double-sided adhesive tape or the sheet of the layer structure of aluminum body material/black binder layer.
In addition, measure the double-sided adhesive tape that obtains by embodiment 1 by above-mentioned (measuring method of transmitance) or the transmitance of sheet is 0%.In addition, to the face of black binder layer one side of double-sided adhesive tape or sheet, by above-mentioned (L *, a *, b *Measuring method) measure with L *a *b *The L of colour system regulation *, a *, b *The time, L *Be 28.0, a *Be 0.48, b *Be 1.33.
(embodiment 2)
Has the clear binder that coating on the face of black layer one side of aluminum body material that black layer and thickness are 30 μ m is obtained by the preparation example 2 of tackiness agent at single face, dry, after forming the transparent adhesive layer of thickness 35 μ m, superimposed on this transparent adhesive layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, in addition, go up the clear binder that coating is obtained by the preparation example 2 of tackiness agent at the face that does not form black layer one side (face that exposes) of aluminum body material, dry, after forming the transparent adhesive layer of thickness 35 μ m, superimposed on this transparent adhesive layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, obtains having the aluminum body material that transparent adhesive layer/single face has black layer/the have double-sided adhesive tape or the sheet of the layer structure of transparent adhesive layer.
In addition, measuring the double-sided adhesive tape that obtained by embodiment 2 or the transmitance of sheet similarly to Example 1 is 0%.In addition, in double-sided adhesive tape or sheet, single face is had the face of black layer one side of the aluminum body material of black layer, measure with L similarly to Example 1 *a *b *The L of colour system regulation *, a *, b *The time, L *Be 24.0, a *Be 0.23, b *Be 0.80.
(embodiment 3)
It at thickness the thermal conductivity white tackiness agent that coating is obtained by the preparation example 3 of tackiness agent on the face of aluminum body material of 25 μ m, dry, after forming the white binder layer with thermal conductivity (thermal conductivity white binder layer) of thickness 30 μ m, superimposed on this thermal conductivity white binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, in addition, the clear binder that coating is obtained by the preparation example 2 of tackiness agent on the face that exposes of aluminum body material, dry, after forming the transparent adhesive layer of thickness 30 μ m, superimposed on this transparent adhesive layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, obtains having transparent adhesive layer/the aluminum body material/double-sided adhesive tape or the sheet of the layer structure of thermal conductivity white binder layer.
In addition, measuring the double-sided adhesive tape that obtained by embodiment 3 or the transmitance of sheet similarly to Example 1 is 0%.In addition, the reflectivity of face of measuring thermal conductivity white binder layer one side of double-sided adhesive tape or sheet by above-mentioned (measuring method of reflectivity) is 69%.In addition, in double-sided adhesive tape or sheet,, measure with L similarly to Example 1 the face of thermal conductivity white binder layer one side *a *b *The L of colour system regulation *, a *, b *The time, L *Be 91.8, a *For-0.8, b *Be-0.5.
(embodiment 4)
It at thickness the thermal conductivity white tackiness agent that coating is obtained by the preparation example 3 of tackiness agent on the face of aluminum body material of 25 μ m, dry, after forming the thermal conductivity white binder layer of thickness 30 μ m, superimposed on this thermal conductivity white binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, in addition, the black tackiness agent that coating is obtained by the preparation example 1 of tackiness agent on the face that exposes of aluminum body material, dry, after forming the black binder layer of thickness 30 μ m, superimposed on this black binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, obtains having the black binder layer/the aluminum body material/double-sided adhesive tape or the sheet of the layer structure of thermal conductivity white binder layer.
In addition, measuring the double-sided adhesive tape that obtained by embodiment 4 or the transmitance of sheet similarly to Example 1 is 0%.In addition, to the face of black binder layer one side of double-sided adhesive tape or sheet, measure with L similarly to Example 1 *a *b *The L of colour system regulation *, a *, b *The time, L *Be 28.0, a *Be 0.48, b *Be 1.33.
In addition, the reflectivity of face of measuring thermal conductivity white binder layer one side of double-sided adhesive tape or sheet similarly to Example 3 is 68%.In addition, in double-sided adhesive tape or sheet,, measure with L similarly to Example 1 the face of thermal conductivity white binder layer one side *a *b *The L of colour system regulation *, a *, b *The time, L *Be 90.8, a *For-1.3, b *Be-0.3.
(embodiment 5)
It at thickness the thermal conductivity white tackiness agent that coating is obtained by the preparation example 3 of tackiness agent on the face of aluminum body material of 25 μ m, dry, after forming the white binder layer with thermal conductivity (thermal conductivity white binder layer) of thickness 30 μ m, superimposed on this thermal conductivity white binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, in addition, the thermal conductivity white tackiness agent that coating is obtained by the preparation example 3 of tackiness agent on the face that exposes of aluminum body material, dry, form thickness 30 μ m have thermal conductivity white binder layer after, superimposed on this thermal conductivity white binder layer have a face and adopt polysiloxane-based stripping treatment agent to implement the partition of the structure of lift-off processing, obtains having thermal conductivity white binder layer/aluminum body material/double-sided adhesive tape or the sheet of the layer structure of thermal conductivity white binder layer.
In addition, measuring the double-sided adhesive tape that obtained by embodiment 5 or the transmitance of sheet similarly to Example 1 is 0%.In addition, when measuring the reflectivity of face of thermal conductivity white binder layer one side of double-sided adhesive tape or sheet similarly to Example 3, be respectively 69%, 70%.In addition, in double-sided adhesive tape or sheet,, measure with L similarly to Example 1 the face of the thermal conductivity on two sides white binder layer one side *a *b *The L of colour system regulation *, a *, b *The time, for the face of thermal conductivity white binder layer one side, L *Be 87.5, a *For-1.03, b *Be 2.86, for the face of another thermal conductivity white binder layer one side, L *Be 87.6, a *For-0.96, b *Be 2.78.
(comparative example 1)
Formed aluminium-vapour deposition layer (thickness: the body material that polyethylene terephthalate 0.05 μ m) is made (total thickness: 40 μ m) the replacement aluminum body material except using at single face, similarly to Example 1, obtain having the double-sided adhesive tape or the sheet of the layer structure of body material/black binder layer that transparent adhesive layer/polyethylene terephthalate makes.
(comparative example 2)
Formed aluminium-vapour deposition layer (thickness: the body material that polyethylene terephthalate 0.05 μ m) is made (total thickness: 40 μ m) the replacement aluminum body material except using at single face, similarly to Example 3, obtain having transparent adhesive layer/the polyethylene terephthalate film/double-sided adhesive tape or the sheet of the layer structure of thermal conductivity white binder layer.
(comparative example 3)
Formed aluminium-vapour deposition layer (thickness: the body material that polyethylene terephthalate 0.05 μ m) is made (total thickness: 40 μ m) the replacement aluminum body material except using at single face, similarly to Example 4, obtain having the black binder layer/the polyethylene terephthalate film/double-sided adhesive tape or the sheet of the layer structure of thermal conductivity white binder layer.
(evaluation)
In order to estimate thermal conductivity, for the double-sided adhesive tape or the sheet that obtain by embodiment 1～5 and comparative example 1～3, obtain thermal conductivity by following (thermal Conductivity Determination method), obtain the result shown in the table 1.As shown in Table 1, double-sided adhesive tape that embodiment 1～5 relates to or sheet, the thermal conductivity of any one is all high, excellent thermal conductivity.Therefore can confirm, double-sided adhesive tape that embodiment 1～5 relates to or sheet, the exothermicity of any one is all good.
On the other hand, double-sided adhesive tape that comparative example 1～3 relates to or sheet, thermal conductivity is low, and thermal conductivity is low.
[table 1]
Thermal conductivity (W/mK)
Embodiment 1 0.33
Embodiment 2 0.31
Embodiment 3 0.47
Embodiment 4 0.47
Embodiment 5 0.60
Comparative example 1 0.08
Comparative example 2 0.16
Comparative example 3 0.18
(thermal Conductivity Determination method)
Based on the dull and stereotyped relative method (ASTM E1530-93) of protection hot plate type, measure the thermal conductivity of double-sided adhesive tape or sheet.In the dull and stereotyped relative method of this protection hot plate type, measure the heat flux (W) that flows through the sample thickness direction with heat flowmeter, obtain thermal impedance Rs (m 2K/W), obtain thermal conductivity λ (W/mK) by following formula (1).
λ(W/m·K)＝d/Rs (1)
[in the formula (1), λ is thermal conductivity (W/mK), and d is thickness (m), and Rs is thermal impedance (m 2K/W)].
Thermal impedance Rs (m in the above-mentioned formula (1) 2K/W) can obtain by following formula (2).In addition, in following formula (2), the anti-R of thermal contact resistance between rate constant F and sample and the heater section up and down IntWith standard test specimen each temperature is proofreaied and correct in advance, and adopt the value of the linear interpolation under actual temperature.
Rs(m 2·K/W)＝[F×(T U-T M)/(T M-T L)]-R int (2)
[in the formula (2), Rs is thermal impedance (m 2K/W), F is a rate constant, T UBe the temperature between upside heater section and the sample, T MBe the temperature between sample and the heat flowmeter, T LBe the temperature between heat flowmeter and the downside heater section, R IntFor sample and the thermal contact resistance between the heater section is anti-up and down].
Particularly, as the thermal conductivity determinator, using appts name " UNITHERM 2021 types " (manufacturing of ANTER company), sample [discoideus double-sided adhesive tape or the sheet of diameter (φ): 50mm] is arranged on the position of the regulation of thermal conductivity determinator with form shown in Figure 1, heat by well heater up and down, uper side surface and downside surface to sample apply temperature head, measure heat flux (W) at this moment by heat flowmeter (calorimeter), utilize above-mentioned formula (1) and (2) to obtain thermal conductivity (W/mK).
In addition, Fig. 1 is illustrated in when measuring thermal conductivity, the synoptic diagram of the state that is provided with of the sample in the thermal conductivity determinator (device name " UNITHERM 2021 types ", ANTER company makes).In Fig. 1,1 is that the heater section (upper portion heater), 2 of upside is hot travel directions for protection heater section (protection heater section), 12 for protection heater section (protection heater section), 11 for the cold machine of cooling part, 10 for heat sink, 9 for the heater section of downside (lower heater), 8 for thermometer, 7 for heat flowmeter (calorimeter), 6 for thermometer, 5 for sample, 4 for thermometer, 3.

Claims (13)

1. a self adhesive tape or sheet with reflectivity and/or opacifying property, it is that at least one mask at body material has binder layer, and the reflectivity that has at least one side is more than 60% and/or transmitance is the self adhesive tape with reflectivity and/or opacifying property or the sheet of the characteristic below 0.3%, it is characterized in that body material is that thickness is the above metal system body materials of 3 μ m.
2. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1, wherein metal system body material is a tinsel.
3. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1, wherein metal system body material is the aluminum body material.
4. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1, wherein metal system body material is for there being the metal system body material of black layer at least one mask.
5. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1, wherein the binder layer of one side at least of body material contains the thermal conductivity compound.
6. according to described self adhesive tape or the sheet of claim 1, it is characterized in that, also contain light shield layer with reflectivity and/or opacifying property.
7. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 6, wherein light shield layer is the black layer that is black.
8. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 6, wherein light shield layer is the binder layer that is black.
9. according to described self adhesive tape or the sheet of claim 1, it is characterized in that, also contain the reflecting layer with reflectivity and/or opacifying property.
10. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 9, wherein the reflecting layer is the white layer that is white in color.
11. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 9, wherein the reflecting layer is the binder layer that is white in color.
12. according to described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1, this self adhesive tape or sheet are used in the fixing of liquid crystal display mode block assembly and back light unit.
13. liquid crystal indicator, this device is the liquid crystal indicator with liquid crystal display mode block assembly and back light unit, it is characterized in that liquid crystal display mode block assembly and back light unit are fixed with described self adhesive tape or the sheet with reflectivity and/or opacifying property of claim 1.
CN200610103064XA 2005-07-13 2006-07-11 Adhesive belt or sheet with reflectivity and/or lightproofness Expired - Fee Related CN1896169B (en)

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CN1896169B (en) 2012-02-29

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