CN106010324A - Surface-protective film and optical component attached with the same - Google Patents
Surface-protective film and optical component attached with the same Download PDFInfo
- Publication number
- CN106010324A CN106010324A CN201610089997.1A CN201610089997A CN106010324A CN 106010324 A CN106010324 A CN 106010324A CN 201610089997 A CN201610089997 A CN 201610089997A CN 106010324 A CN106010324 A CN 106010324A
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- film
- adhesive layer
- surface protection
- stripping
- protection film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/10—Homopolymers or copolymers of methacrylic acid esters
-
- 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
- C09J7/201—Adhesives in the form of films or foils characterised by their carriers characterised by the release coating composition on the carrier layer
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2551/00—Optical elements
-
- 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
- C09J2301/314—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 the adhesive layer and/or the carrier being conductive
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/414—Additional features of adhesives in the form of films or foils characterized by the presence of essential components presence of a copolymer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
-
- 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
- C09J2483/00—Presence of polysiloxane
- C09J2483/005—Presence of polysiloxane in the release coating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Polarising Elements (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a surface-protective film, which is used in an optical film having uneven surface, has low in pollution on a bonded object, is free of time change on the low-pollution and has excelelnt stipping antistatic performance without time deterioration, and also provides an optical component attached with the film. The surface-protective film (10) has an adhesive layer (2) on one surface of a base material film (1) formed from transparent resin. The adhesive layer (2) contains an ionic compound as an antistatic agent. A stripping film (5) having a stripping agent (4) is laminated on the adhesive layer (2). The stripping agent (4) is compsoed of alkali metal salts and organic silicon stripping agent, wherein the alkali metal salt is transprinted to the surface of the adhesive layer from the stripping film, so as to reduce stripping static voltage when the adhesive layer is stripped from the bonded object.
Description
Technical field
The present invention relates to a kind of surface protection film, its fit in polarization plates (polarizing plate),
The opticses such as polarizer, display lens coating (are sometimes referred to as optical film) below
Surface.More specifically, the present invention provides a kind of surface protection film and is fitted with this surface guarantor
The optics of cuticula, described surface protection film is few to the pollution of adherend, and will not through time
Deterioration ground has the stripping antistatic property of excellence.
Background technology
Manufacture, carrying polarization plates, polarizer, display lens coating, anti-reflective film,
Optical films such as hard coat film, touch pad transparent and electrically conductive film and employ their display etc.
During optical goods, at the surface coating surface protecting film of this optical film, to prevent subsequent handling
In surface smut and damage.Visual examination as the optical film of goods peels to save
Surface protection film carries out the program fitted again, improves work efficiency, the most also with surface protection film
The state fitting in optical film is directly carried out.
For a long time, in the manufacturing process of optical goods, in order to prevent damage or dirt attached
, the face being generally used in base material film is provided with the surface protection film of adhesive layer.Surface
Protecting film fits on optical film via the adhesive layer of weak cohesive force.Adhesive layer is set to
Weak cohesive force, is to go to be peeled off from the surface of optical film by used surface protection film
Except time, it is possible to be easily peeled off, and the non-cohesive light remaining in the goods as adherend of binding agent
(generation of so-called cull is prevented) on film.
In recent years, in the production process of display panels, although following phenomenon produces number of packages
Few, but exist: the surface protection film owing to fitting on optical film is peeled off when removing
The stripping electrostatic pressure produced, for controlling the driving IC etc. of the display picture of display panels
Component is destroyed, the orientation of liquid crystal molecule is damaged.
Additionally, for the power consumption reducing display panels, the driving voltage step-down of liquid crystal material,
Drive the breakdown voltage step-down the most therewith of IC.Start recently to seek to make stripping electrostatic pressure exist
In the range of+0.7kV～-0.7kV.
Additionally, conventional polarization plates is to be constituted by containing the polyvinyl alcohol (PVA) being soaked with iodine
The both sides of polarizer (polarizer), bond three in order to protect polarizer with aqueous binder
Acetylcellulose film (TAC film) manufactures polarization plates, but in recent years, also begins to use such as
Lower polarizing plate: use acrylic film, cyclic polyolefin film, polyester film to replace the inclined of TAC film
Vibration plate；Ultraviolet-curing adhesive is used to replace the polarization plates of aqueous binder.Polarization plates
Constituent material change creates problems with: the stripping produced when peeling off and removing surface protection film
Electrostatic pressure ratio increases when using the polarization plates of conventional composition.
Additionally, popularizing recently as 3D display (three-dimensional display), at polaroid
Sometimes FPR (Film Patterned Retarder (diaphragm type it is fitted with on the surface of optical film
Patterning Phase delay)) film.Surface on the surface by fitting in the optical films such as polaroid
After protecting film peels, FPR film of fitting.But, if the surface quilt of the optical films such as polaroid
Binding agent or antistatic additive for surface protection film pollute, then there is FPR film and be difficult to bonding
Problem.Therefore, for the surface protection film of this purposes, seek a kind of pollution to adherend
Few film.
On the other hand, in some liquid crystal panel manufacturers, as surface protection film to adherend
The evaluation methodology of contaminative, adopt with the following method, first will fit in the optical films such as polaroid
Surface protection film peel, again fit being mixed into alveolate state, carry out with rated condition
Heat treated, then, peels surface protection film, observes the surface of adherend.In this evaluation
In method, even if the surface contamination of adherend is trace, if on the part and the surface that are mixed into bubble
The part contacted with binding agent of protecting film, the surface contamination of adherend has difference, then with bubble
The form residual of vestige (otherwise referred to as froth pit (Japanese: bubble ジ ミ)).Therefore, make
For the evaluation methodology of the contaminative on this surface to adherend, become the strictest evaluation side
Method.Seek a kind of surface protection film in recent years, even if this surface protection film is by this strict
In the result that evaluation methodology is judged, the contaminative to the surface of adherend does not the most exist and asks
Topic.
Propose following a kind of surface protection film: using surface protection film from the optics as adherend
With when peeling off on film, in order to prevent peeling off the undesirable condition that electrostatic pressure height causes, employ and will shell
Adhesive layer that be low stripping electrostatic pressure from electrostatic pressure suppression, containing antistatic additive.
Such as, in patent documentation 1, disclose a kind of surface protection film, it use by alkane
The bonding that base leptodactyline, the acrylic polymer containing hydroxyl, polyisocyanate are constituted
Agent.
Additionally, in patent documentation 2, disclose a kind of adhesive composition and employ this and glue
The bonding sheet class of knot agent compositions, described adhesive composition is 1.0 by ionic liquid and acid number
Following acrylate copolymer is constituted.
Additionally, in patent documentation 3, disclose a kind of adhesive composition and employ this and glue
The surface protection film of knot agent compositions, described adhesive composition is by acrylate copolymer, polyethers
Polyol compound, the alkali metal salt composition crossed through Anion-adsorption compound treatment.
Additionally, in patent documentation 4, disclose a kind of adhesive composition and employ this and glue
Knot agent compositions surface protection film, described adhesive composition by ionic liquid, alkali metal salt,
Glass transition temperature is that the polymer of less than 0 DEG C is constituted.
Prior art literature
Patent documentation
Patent documentation 1: JP 2005-131957 publication
Patent documentation 2: JP 2005-330464 publication
Patent documentation 3: JP 2005-314476 publication
Patent documentation 4: JP 2006-152235 publication
Summary of the invention
The technical problem to be solved in the present invention
In the surface protection film described in above-mentioned patent documentation 1～4, add in the inside of adhesive layer
Added with antistatic additive.Therefore, the thickness of adhesive layer is the thickest, or after fitting in adherend
Time is the most long, for the adherend of surface protection film of having fitted, has antistatic additive from adhesive layer
To the trend that the amount of adherend transfer is the most.If the quantitative change of the antistatic additive to adherend transfer
Many, then there is the exterior quality of the optical film as adherend to decline or laminating FPR film
Time FPR film cohesive reduce probability.
So, in order to reduce described from the antistatic additive that adhesive layer shifts to adherend through time
Change, if making the lower thickness of adhesive layer, then can produce other problem.Such as, exist as
Lower problem: irregular at surface tools such as the polaroids through non-glare treated for anti-dazzle
In the case of optical film, binding agent cannot be followed the concavo-convex of optical film surface and is mixed into gas
Bubble；Make cohesive force reduce owing to the bonding area of optical film with binding agent reduces, using
Middle surface protection film tilts, comes off.
Additionally, in order to make the rheological parameters' change with time of the antistatic additive shifted to adherend from adhesive layer subtract
Few, if reducing the addition of the antistatic additive added in adhesive layer, then there is generation as follows
The danger of phenomenon: peel off the stripping electrostatic pressure produced when removing surface protection film and increase, drive
The phenomenon that the components such as IC are breakdown, or the phenomenon that the orientation of liquid crystal molecule is destroyed.
The present invention considers above-mentioned situation and completes, and its technical problem is to provide a kind of table
Surface protective film and employ the optics of this surface protection film, described surface protection film is a kind of
For the surface protection film of optical film, this surface protection film is concavo-convex even for having on surface
Optical film also be able to use, the pollution to adherend is considerably less, and the pollution to adherend
Property will not rheological parameters' change with time, and, even if replace polarization plates component parts (TAC film is changed to
Acrylic film or polyester film, aqueous binder are changed to ultraviolet-curing adhesive), also can
It is low stripping electrostatic pressure by stripping electrostatic pressure suppression when peeling off surface protection film.
In order to solve described technical problem, present inventor etc. has carried out conscientiously studying.
First, in order to few to the pollution of adherend, and make the rheological parameters' change with time of contaminative little, need
Reduce the addition being speculated as polluting the antistatic additive of adherend.But, reducing antistatic additive
Addition in the case of, surface protection film stripping electrostatic pressure when adherend is peeled off can be increased
High.Then, present inventor to do not increase antistatic additive addition and by surface protection film from
The method that electrostatic pressure suppression is low stripping electrostatic pressure of peeling off when adherend is peeled off is studied.
After studying described content, result present inventor etc. finds, in binding agent group
Compound adds the antistatic additive of the degree not polluting adherend, a face of base material is coated with
Cloth, this adhesive composition dry, after laminating adhesive layer, give to the surface of adhesive layer
Appropriate antistatic additive.Thereby, it is possible to using surface protection film from the optical film as adherend
Stripping electrostatic pressure suppression during upper stripping is low stripping electrostatic pressure, and is difficult to pollute adherend, from
And complete the present invention.
Solve the technological means of technical problem
The technological thought of the surface protection film of the present invention is, by coating, is dried containing the most dirty
The adhesive composition of the antistatic additive of the degree of dye adherend, after laminating adhesive layer, gives
The antistatic additive that the surface of adhesive layer is appropriate, will suppress as low dirt the contaminative of adherend
On the basis of metachromia, the stripping electrostatic in time peeling off on the optical film of adherend is constrained
It is made as low stripping electrostatic pressure.
In order to solve above-mentioned technical problem, the present invention provides a kind of surface protection film, and its feature exists
In, on a face of the base material film being made up of the resin with the transparency, form adhesive layer,
This adhesive layer contains the ionic compound as antistatic additive, has the stripping film of peeling agent layer
Being fitted on this adhesive layer via described peeling agent layer, described peeling agent layer contains alkali metal salt
And silicone remover, the composition of described alkali metal salt is transferred to described viscous from described stripping film
The surface of knot oxidant layer, stripping electrostatic pressure when peeling off described adhesive layer from adherend reduces.
Furthermore it is preferred that described ionic compound is not alkali metal salt.
Furthermore it is preferred that described adhesive layer is formed by the crosslinking of (methyl) acrylate copolymer.
Further it is provided that it is a kind of from as surface potential when peeling off the optical film of adherend
(surface potential) is the surface protection film of+0.7kV～-0.7kV.
Furthermore it is preferred that peeling force when being peeled off from described adhesive layer by described stripping film is
0.005～0.3N/50mm.
Additionally, the present invention provides a kind of optics being fitted with described surface protection film.
Invention effect
The surface protection film of the present invention is the surface protection film for optical film, even if to surface
Have irregular optical film to be used as.Additionally, the surface protection film of the present invention is to adherend
Pollution considerably less, be that a kind of contaminative to adherend will not the surface protection of rheological parameters' change with time
Film.Further, the present invention can provide a kind of surface protection film and employ this protecting film
Optics, even the component parts of the surface protection film polarization plates of the present invention changes
(become acrylic film, cyclic polyolefin film or polyester film from TAC film, from aqueous binder
Become ultraviolet-curing adhesive), stripping electrostatic when will peel off surface protection film constrains
It is made as low stripping electrostatic pressure.
Surface protection film according to the present invention, it is possible to reduce the electrostatic produced when adherend is peeled off
Amount, and peel off the rheological parameters' change with time of antistatic property and pollution to adherend is few, therefore, it is possible to
Expect the raising of productive raising and yield rate.
Accompanying drawing explanation
Fig. 1 is the schematic sectional view of the surface protection film of the present invention；
Fig. 2 is to represent cutting of the state taken off from the surface protection film of the present invention by stripping film
Face figure；
Fig. 3 is the enforcement representing and the surface protection film of the present invention fitting in optics
The sectional view of example.
Description of reference numerals
1 is base material film, and 2 is adhesive layer, and 3 is resin molding, and 4 is peeling agent layer, and 5 is stripping
From film, 7 is antistatic additive, and 8 is adherend (optics), and 10 is surface protection film,
11 is the surface protection film taking stripping film off, and 20 is the optics being fitted with surface protection film.
Detailed description of the invention
Hereinafter, according to embodiment, the present invention is described in detail.
Fig. 1 is the schematic sectional view of the surface protection film of the present invention.This surface protection film 10
The surface in a face of transparent base material film 1 is formed with the adhesive layer containing antistatic additive
2.Being fitted with stripping film 5 on the surface of this adhesive layer 2, described stripping film 5 is at resin
The peeling agent layer 4 containing antistatic additive 7 is defined on the surface of film 3.
As the base material film 1 of the surface protection film 10 for the present invention, use transparent by having
Property and the base material film of flexual resin formation.So, it is possible to fit in work with surface protection film
For the state on the optics of adherend, carry out the visual examination of optics.As base material
The film being made up of the resin with the transparency of film 1 suitably uses polyethylene terephthalate
Ester, PEN, polyethylene glycol isophthalate, poly terephthalic acid fourth
The polyester films such as diol ester.In addition to polyester film, as long as there is desirable strength and there is light
Learning the film of characteristic (optical aptitude), the film being made up of other resins can also use.
Base material film 1 can be tensionless winkler foundation film, it is also possible to be the film through uniaxially or biaxially stretching.Additionally,
Can also by the stretching ratio of stretched film (stretched film), with stretched film crystallization and
The axial orientation angles formed controls as specific value.
For the thickness of base material film 1 of surface protection film 10 of the present invention, there is no particular limitation,
For example, it is preferable to be the thickness about 12～100 μm, if the thickness about 20～75 μm is then
Convenient to operate, the most more preferably.
Furthermore, it is possible to as required, in the phase in the face being formed with adhesive layer 2 of base material film 1
Toss about on face, the hard conating preventing the stain-proofing layer of surface smut, antistatic layer, antisitic defect is set
Deng.Additionally, can apply on the surface of base material film 1 surface modification via corona discharge,
The easily adhesion process such as coating anchor coating agent.
As long as additionally, the adhesive layer 2 for the surface protection film 10 of the present invention is bonded in
The surface of adherend, can the most simply take off, and is difficult to pollute the binding agent of adherend,
Then there is no particular limitation, if considering to fit in the durability etc. after optical film, generally makes
With the binding agent cross-linked by (methyl) acrylate copolymer.
As (methyl) acrylate copolymer, n-butyl acrylate of sening as an envoy to, 2-can be enumerated
The principal monomers such as ethylhexyl acrylate, isooctyl acrylate, different nonyl acrylate with
The comonomers such as acrylonitrile, vinylacetate, methyl methacrylate, ethyl acrylate, third
Olefin(e) acid, methacrylic acid, hydroxyethylmethacry,ate, hydroxybutyl acrylate, shrink are sweet
Functional monomer's copolymerization such as oleyl methyl acrylate, N-methylol methacrylamide
Copolymer.(methyl) acrylate copolymer can be (first with principal monomer and other monomers
Base) acrylate, as the monomer outside principal monomer, can be containing one kind or two or more
Monomer beyond (methyl) acrylate.
Additionally, in (methyl) acrylate copolymer, can be by containing polyoxy alkylidene
Compound copolymerization, it is possible to be mixed.As the compound containing copolymerizable polyoxy alkylidene,
Polyethylene Glycol (400) mono acrylic ester, Polyethylene Glycol (400) monomethacrylate can be listed
Acid esters, methoxy poly (ethylene glycol) (400) acrylate, methoxy poly (ethylene glycol) (400) first
Base acrylate, polypropylene glycol (400) mono acrylic ester, polypropylene glycol (400) monomethyl
Acrylate, methoxyl group polypropylene glycol (400) acrylate, methoxyl group polypropylene glycol (400)
Methacrylate etc..By making these monomers containing polyoxy alkylidene and described (methyl)
The principal monomer of acrylate copolymer, functional monomer's copolymerization, it is possible to obtain by containing polyoxy
The binding agent that the copolymer of alkylidene is formed.
As the change containing polyoxy alkylidene can being mixed in (methyl) acrylate copolymer
Compound, is preferably (methyl) acrylate copolymer containing polyoxy alkylidene, more preferably
The polymer of (methyl) acrylic monomer containing polyoxy alkylidene, such as, can list
Polyethylene Glycol (400) mono acrylic ester, Polyethylene Glycol (400) monomethacrylates, first
Epoxide Polyethylene Glycol (400) acrylate, methoxy poly (ethylene glycol) (400) methacrylic acid
Ester, polypropylene glycol (400) mono acrylic ester, polypropylene glycol (400) monomethacrylates,
Methoxyl group polypropylene glycol (400) acrylate, methoxyl group polypropylene glycol (400) metering system
The polymer of acid esters etc..By these being contained the compound of polyoxy alkylidene and described (methyl)
Acrylate copolymer mixes, it is possible to obtains and is added with the viscous of the compound containing polyoxy alkylidene
Knot agent.
For making an addition to the firming agent of adhesive layer 2, as making (methyl) acrylate
The cross-linking agent of crosslinking copolymers, can list isocyanate compound, epoxide, trimerization
Cyanamide compound, metallo-chelate etc..Additionally, as viscosifier, can list rosin,
Coumarone indene (coumarone indene), terpenoid (terpene), petroleum-type, phenols etc..
Adhesive layer 2 is containing antistatic additive.As the antistatic additive contained in adhesive layer 2,
Can list surfactant-based, ionic liquid, alkali metal salt, metal-oxide, metal are micro-
Grain, electric conductive polymer, carbon, CNT etc., from the transparency, to (methyl) acrylic acid
From the point of view of the affinity of base polymer, adherend contaminative etc., the ion beyond preferred as alkali salt
Compounds etc., are particularly preferably the ionic compound of solid at temperature 25 DEG C.
Additionally, various resin can be added in the antistatic additive of adhesive layer 2.As to anti-quiet
The resin added in electricity agent, can list polyester resin, polyamide-based resin, polyurethanes
Resin, vistanex, polyvinyl butyral resin, polyvinyl alcohol resin, poly-acetic acid second
Alkene ester resin, celluosic resin, organic siliconresin, fluororesin etc..
The antistatic additive comprised in adhesive layer 2 need not concentrate on the surface of adhesive layer 2,
Can uniform dissolution or dispersion in adhesive layer 2.
Ionic compound refers to be made up of with cation anion, has at normal temperatures for liquid
Ionic liquid and the ion solid being solid at normal temperatures.As cationic moiety, can list
Cyclic amidines ion, pyridinium ion, ammonium ion, sulfonium cation, the ions etc. such as imidazol ion
Organic cation or inorganic cation.Additionally, as anionicsite, can list
CnH2n+1COO-、CnF2n+1COO-、NO3 -、CnF2n+1SO3 -、(CnF2n+1SO2)2N-、
(CnF2n+1SO2)3C-、PO4 3-、AlCl4 -、Al2Cl7 -、ClO4 -、BF4 -、PF6 -、AsF6 -、
SbF6 -Deng organic anion or inorganic anion.
Surface protection film 10, adhesive layer 2 containing antistatic additive for the present invention
There is no particular limitation for thickness, but the thickness about the most preferably 5～40 μm, more preferably
Thickness about 10～30 μm.Owing to operability when taking surface protection film on adherend off is excellent
It is different, so preferred surface protecting film for the peel strength (cohesive force) on adherend surface is
0.03～about 0.3N/25mm, the adhesive layer 2 with micro-cohesive force.Additionally, from shelling
From the point of view of in terms of operability excellence when film 5 is taken off from surface protection film 10, stripping film
The peeling force coming from adhesive layer 2 of 5 is preferably 0.005～0.3N/50mm.
Additionally, be used for the stripping film 5 of the surface protection film 10 of the present invention at the one of resin molding 3
Be laminated with peeling agent layer 4 on individual face, this peeling agent layer 4 containing silicone release agent and not with this
The antistatic additive 7 of remover reaction.
As resin molding 3, polyester film, polyamide membrane, polyethylene film, polypropylene can be listed
Film, polyimide film etc., in terms of the transparency is excellent, more cheap from the point of view of, preferably polyester film.
Resin molding can be tensionless winkler foundation film, it is also possible to be the film through uniaxially or biaxially stretching.Additionally, also
Can be by the stretching ratio of stretched film, the axial orientation that formed with the crystallization of stretched film
Angle ambiguity is specific value.
There is no particular limitation for the thickness of resin molding 3, the thickness about the most preferably 12～100 μm
Degree, if the thickness about 20～50 μm the most easily operates, thus more preferably.
Additionally, also dependent on needs, the surface of resin molding 3 applies via corona discharge
The easily adhesion process such as surface modification, coating anchor coating agent.
As the silicone remover of composition peeling agent layer 4, it is with polydimethylsiloxane
For the remover of main constituent, addition reaction-type, condensation reaction type, cationic polymerization can be listed
The known silicone stripping such as type, radical polymerization mould assembly (radical polymerization type)
From agent.The product sold in market as addition reaction-type silicone remover, such as may be used
List KS-776A, KS-847T, KS-779H, KS-837, KS-778, KS-830
(SHIN-ETSU HANTOTAI's chemical industry (strain) system), SRX-211, SRX-345, SRX-357, SD7333,
SD7220、SD7223、LTC-300B、LTC-350G、LTC-310(Dow Corning Toray
(strain) makes) etc..The product sold in market as condensation reaction type, include, for example out
SRX-290, SYLOFF-23 (Dow Corning Toray (strain) system) etc..As sun from
Sub-aggretion type and the product that sells in market, include, for example out TPR-6501, TPR-6500,
UV9300, VU9315, UV9430 (Momentive Performance Materials society system),
X62-7622 (SHIN-ETSU HANTOTAI's chemical industry (strain) system) etc..As radical polymerization mould assembly in market
The product sold, include, for example out X62-7205 (SHIN-ETSU HANTOTAI's chemical industry (strain) system) etc..
As the antistatic additive of composition peeling agent layer 4, make preferably for dimethyl polysiloxane
For the favorable dispersibility of the stripper solution of main constituent, and do not hinder and make with dimethyl polysiloxane
Remover for main constituent solidifies.Additionally, in order to transfer to adhesive layer 2 from peeling agent layer 4
Surface and give adhesive layer antistatic effect, the most not with based on dimethyl polysiloxane
The antistatic additive of the remover reaction of composition.As such antistatic additive, alkali metal salt is more
Properly.
As alkali metal salt, the slaine formed by lithium, sodium, potassium can be listed.Specifically,
Such as, Li can be used aptly+、Na+、K+The cation of composition and Cl-、Br-、I-、BF4 -、
PF6 -、SCN-、ClO4 -、CF3SO3 -、(CF3SO2)2N-、(C2F5SO2)2N-、(CF3SO2)3C-
The slaine that the anion of composition is constituted.Wherein, LiBr, LiI, LiBF are particularly preferably used4、
LiPF6、LiSCN、LiClO4、LiCF3SO3、Li(CF3SO2)2N、Li(C2F5SO2)2N、
Li(CF3SO2)3The lithium salts such as C.These alkali metal salts can be used alone, or can with 2 kinds with
On be used in mixed way.For the stabilisation of ionic species, can add containing poly (oxyalkylene) based structures
Compound.
Interpolation for the antistatic additive of the remover using dimethyl polysiloxane as main constituent
Amount, because of the kind of antistatic additive or with the affinity degree of remover and different, it is only necessary to consider will
Surface protection film desired stripping electrostatic pressure when peeling off from adherend, pollution to adherend
Property, bonding characteristic etc. and set.
Peeling agent layer 4 is by the remover with dimethyl polysiloxane as main constituent and and this stripping
The peeling agent layer 4 constituted from the mixture of the nonreactive antistatic additive of agent.Gather with dimethyl
Siloxanes is that there is no particular limitation for the mixed method of remover and the antistatic additive of main constituent.With
Lower either method: add anti-quiet in the remover with dimethyl polysiloxane as main constituent
Electricity agent, the method adding mixing remover solidification catalyst upon mixing；With the poly-silicon of dimethyl
Oxygen alkane be the remover of main constituent in advance with after organic solvent diluting, add, mix antistatic
Agent and the method for remover solidification catalyst；By using dimethyl polysiloxane as main constituent
After remover dilutes the most in organic solvent, add mixed catalyst, then add, mix
The method etc. of antistatic additive.In addition it is also possible to be added as needed on silane coupler etc. to attach rush
Enter the material of the auxiliary antistatic effects such as agent, compound containing polyoxy alkylidene.
Using dimethyl polysiloxane as the blending ratio of the remover of main constituent Yu antistatic additive
There is no particular limitation, relative to 100 weight portions using dimethyl polysiloxane as main constituent
The solid constituent of remover, be preferably 5～100 weight portions with solid component meter antistatic additive left
Right ratio.The stripping using dimethyl polysiloxane as main constituent relative to 100 weight portions
The solid constituent of agent, if the addition of the solid constituent conversion of antistatic additive is less than 5 weight portions
Ratio, the antistatic additive transfer amount to adhesive layer surface tails off, it is difficult to play in a binder
Anlistatig function.Additionally, relative to 100 weight portions using dimethyl polysiloxane as master
The solid constituent of the remover of composition, if the addition of the solid constituent conversion of antistatic additive exceedes
The ratio of 100 weight portions, then antistatic additive with using dimethyl polysiloxane as the stripping of main constituent
Being transferred to the surface of adhesive layer from agent, the bonding characteristic that therefore there is binding agent reduces simultaneously
Probability.
The base material film 1 of the surface protection film 10 of the present invention is formed gluing containing antistatic additive
The method of knot oxidant layer 2 and the method for laminating stripping film 5 can be carried out by known method, do not have
There is particularly restriction.Specifically, following method can be listed: (1) is the one of base material film 1
On individual face, it is coated with, is dried the resin combination for forming the adhesive layer 2 containing antistatic additive
Thing, after forming adhesive layer, the method for laminating stripping film 5；(2) on the surface of stripping film 5,
It is coated with, is dried the resin combination for forming the adhesive layer 2 containing antistatic additive, formed
After adhesive layer, the method etc. of laminating base material film 1；Use any of the above-described method.
Can pass through additionally, form the adhesive layer 2 containing antistatic additive on the surface of base material film 1
Known method is carried out.Specifically, reverse rubbing method, comma scraper rubbing method can be used
(Comma Coating), gravure coating process (gravure coating), slit type extrusion pressing type are coated with
The known coating side such as cloth method (slot die coating), Meyer rod coating method, air knife coating method
Method.
Can be carried out by known method equally additionally, form peeling agent layer 4 on resin molding 3.
Specifically, gravure coating process, Meyer rod coating method, air knife coating method etc. can be used known
Coating process.
The surface protection film 10 of the present invention with above-mentioned composition is used from the optics as adherend
Surface potential when peeling off on film is preferably+0.7kV～-0.7kV.Further, surface potential
More preferably+0.5kV～-0.5kV, particularly preferably+0.1kV～-0.1kV.This surface potential can
By to the antistatic additive contained in the antistatic additive contained in adhesive layer 2 and peeling agent layer 4
The kind of 7, addition etc. carry out increasing and decreasing to adjust.To using surface protection film 10 from as quilt
Surface contamination after the optical film stripping of viscous thing, as the optical film of adherend is carried out
Consider, adjust the antistatic additive of adhesive layer 2 and the kind of the antistatic additive 7 of peeling agent layer 4
Class, addition.
Fig. 2 is to represent cutting of the state taken off from the surface protection film of the present invention by stripping film
Face figure.
By stripping film 5 is peeled from the surface protection film 10 shown in Fig. 1, stripping film 5
Peeling agent layer 4 in the part of antistatic additive (symbol 7) that contains be transferred to (being attached to)
The surface of the adhesive layer 2 of surface protection film 10.Therefore, in fig. 2, schematically with
The speckle (circular) of symbol 7 represents the surface attachment of the adhesive layer 2 at surface protection film
Antistatic additive.The composition of antistatic additive 7 is transferred to the surface of adhesive layer 2 from stripping film 5,
Thus, with transfer before adhesive layer 2 compared with, from adherend peel off adhesive layer 2 time
Stripping electrostatic pressure reduces.Additionally, stripping electrostatic pressure when peeling off adhesive layer from adherend can
Measured by known method.Such as, surface protection film is being conformed to the adherends such as polarization plates
After, use high speed electronic stripping tester (Tester industry system), with the stripping speed of 40m per minute
Spend and surface protection film is peeled off, use surface potential meter (Keyence (strain) system) every simultaneously
10ms measures the surface potential on an adherend surface, by the absolute value of surface potential now
Maximum be set to peel off electrostatic pressure (kV).
In the surface protection film of the present invention, by the state having taken stripping film off shown in Fig. 2
When surface protection film 11 fits in adherend, it is transferred to surface anti-quiet of this adhesive layer 2
Electricity agent contacts with the surface of adherend.Protect thereby, it is possible to surface again will be taken from adherend off
Stripping electrostatic pressure suppression during cuticula is low stripping electrostatic pressure.
Fig. 3 is the embodiment representing and the surface protection film of the present invention fitting in optics
Sectional view.
The surface protection film 10 of the present invention is to have peeled stripping film 5, to have exposed adhesive layer 2
State (surface protection film 11 of Fig. 2), fits in as adherend via this adhesive layer 2
Optics 8 on.
That is, Fig. 3 represents the optics 20 being fitted with surface protection film 11, this surface protection
Film 11 is the state having taken stripping film 5 from the surface protection film 10 of the present invention off.As light
Department of the Chinese Academy of Sciences's part, can list polarization plates, polarizer, lens coating, dual-purpose are the inclined of polarizer
Shake the optical films such as polaroid that sheet, dual-purpose are lens coating.Such optics can be used as liquid
The liquid crystal indicators such as LCD panel, the composition of optics device etc. of various metrical instrument class
Parts.Additionally, as optics, anti-reflective film, hard coat film, touch pad also can be listed
With optical films such as transparent and electrically conductive films.
The surface of the state of stripping film 5 will be peeled from the Antistatic surface protecting film 10 of the present invention
Protecting film 11 from as the optics (optical film) of adherend peel off remove time, energy
Enough suppression peels off electrostatic pressure substantially lowly.Therefore, do not have breakdown driven IC, TFT element,
The probability of the components such as grid line drive circuit, it is possible to increase manufacturing display panels
Production efficiency in operation, it is ensured that the reliability of production process.
Embodiment
Then, by embodiment, the present invention is further described.
(embodiment 1)
(making of surface protection film)
By the organosilicon of 5 weight portion addition reaction-types (Dow Corning Toray (strain) system,
Trade name: SRX-345), the double fluorine sulfimide lithium (Lithium of 0.75 weight portion
Bis (fluorosulfonyl) imide), 95 parts by weight of toluene molten with the mixing of the 1:1 of ethyl acetate
Agent, 0.05 weight portion platinum catalyst (Dow Corning Toray (strain) system, trade name:
SRX-212) blend, stirring mixing, the coating of the peeling agent layer forming embodiment 1 is carried out
Preparation.In the way of dried thickness is 0.2 μm, embodiment 1 will be formed with Meyer rod
The coatings of peeling agent layer at the polyethylene terephthalate film that thickness is 38 μm
On surface, use the heated air circulation type baking oven of 120 DEG C to carry out 1 minute being dried, obtain embodiment
The stripping film of 1.
On the other hand, by 80 weight portion 2-ethylhexyl acrylate, 17 weight portion methoxyl groups
Polyethylene Glycol (400) methacrylate, being total to of 3 weight portion 2-hydroxyethylmethacry,ate
Polymers constitutes binding agent, relative to 40% ethyl acetate solution of 100 these bonding agents of weight portion,
Stirring mixing 0.2 weight portion 1-nonylpyridine phosphorus hexafluoride hydrochlorate (1-nonyl pyridinium
Hexafluoride phosphate), 2 weight portion isocyanates firming agent (Dong Caoshe systems
CORONATE (registered trade mark) HX), the binding agent of preparation embodiment 1.
On the surface of the polyethylene terephthalate film that thickness is 38 μm, so that being dried
After the mode that thickness is 20 μm be coated with the binding agent prepared after, use the hot blast of 100 DEG C
Circulating oven drying 2 minutes, forms adhesive layer.Then, on the surface of this adhesive layer,
Fit the peeling agent layer (organosilicon process face) of stripping film of embodiment 1 of above-mentioned making.Will
The adhesive film of gained is incubated 5 days in the environment of 40 DEG C, makes binding agent solidify, is implemented
The surface protection film of example 1.
(embodiment 2)
Except the dried thickness of the coating of the peeling agent layer by forming embodiment 1 is set to 0.1 μm
In addition, in the same manner as example 1, the surface protection film of embodiment 2 is obtained.
(embodiment 3)
Except the organosilicon of the addition reaction-type of embodiment 1 being set to Dow Corning Toray
(strain) system, trade name: SRX-211, replace double fluorine sulphur with double trifluoromethanesulfonimide lithiums
Beyond imide li, in the same manner as example 1, the surface protection of embodiment 3 is obtained
Film.
(comparative example 1)
By the organosilicon of 5 weight portion addition reaction-types (Dow Corning Toray (strain) system,
Trade name: SRX-345), the mixed solvent of the 1:1 of 95 parts by weight of toluene and ethyl acetate,
0.05 weight portion platinum catalyst (Dow Corning Toray (strain) system, trade name: SRX-212)
Blend, stirring mixing, the coating of the peeling agent layer forming comparative example 1 is prepared.With
Dried thickness is the mode of 0.2 μm, will form the peeling agent layer of comparative example 1 with Meyer rod
Coatings on the surface of the polyethylene terephthalate film that thickness is 38 μm, use
The heated air circulation type oven drying of 120 DEG C 1 minute, obtains the stripping film of comparative example 1.
On the other hand, in the way of dried thickness is 20 μm, by the bonding of embodiment 1
Agent is coated on the surface of the polyethylene terephthalate film that thickness is 38 μm, then uses
The heated air circulation type oven drying of 100 DEG C 2 minutes, forms adhesive layer.Then, glue at this
Peeling agent layer (the organosilicon of the stripping film of the comparative example 1 of the surface above-mentioned making of laminating of knot oxidant layer
Process face).The adhesive film obtained is incubated 5 days in the environment of 40 DEG C, makes binding agent solidify,
Obtain the surface protection film of comparative example 1.
(comparative example 2)
Except adding in addition to 1-nonylpyridine phosphorus hexafluoride hydrochlorate the most in a binder, with reality
Execute the mode that example 1 is identical, obtain the surface protection film of comparative example 2.
(comparative example 3)
Except replacing the 1-nonylpyridine phosphorus hexafluoride of embodiment 1 by double fluorine sulfimide lithium
Beyond hydrochlorate, in the same manner as example 1, the surface protection film of comparative example 3 is obtained.
Below, it is shown that the method for evaluation test and result.
The assay method ＞ of the peeling force of ＜ stripping film
The sample of surface protection film is cut into width 50mm, length 150mm.At 23 DEG C
Under the experimental enviroment of × 50%RH, exist with the peeling rate of 300mm/ minute with cupping machine
On the direction of 180 °, measure intensity when being peeled off by stripping film, as the stripping of stripping film
Power (N/50mm).
(surface resistivity of antistatic oxidant layer)
After being peeled off from the sample of Antistatic surface protecting film by stripping film, use high-performance height electricity
Resistance rate meter (Analytech society of Mitsubishi Chemical Hiresta (registered trade mark)-UP), is applying
Voltage 100V, minute measure the surface resistivity of antistatic oxidant layer under conditions of 30 seconds
(Ω/□)。
The assay method ＞ of the cohesive force of ＜ surface protection film
Will be in polarizer (polyvinyl alcohol film containing iodine) upper use ultraviolet-curing adhesive patch
Close polarization plates (AG-LR polarization plates) that have acrylic film, that process through anti-dazzle low reflection
As adherend.Surface make-up machine at glass plate is fitted this polarization plates.Then, at polarization
On the acrylic film on the surface of plate, after laminating is cut into the surface protection film of width 25mm,
Keeping 1 day under the experimental enviroment of 23 DEG C × 50%RH.Then, use cupping machine, with
The peeling rate of 300mm/ minute, on the direction of 180 °, measures when peeling off surface protection film
Intensity, as cohesive force (N/25mm).
The assay method ＞ peeling off electrostatic pressure of ＜ surface protection film
Will be in polarizer (polyvinyl alcohol film containing iodine) upper use ultraviolet-curing adhesive patch
Close polarization plates (AG-LR polarization plates) that have acrylic film, that process through anti-dazzle low reflection
As adherend.Surface make-up machine at glass plate is fitted this polarization plates.Afterwards, at polarization
On the acrylic film on the surface of plate, after laminating is cut into the surface protection film of width 25mm,
Preserve 1 day under the experimental enviroment of 23 DEG C × 50%RH.Then, high speed electronic stripping tester is used
(Tester industry system) peels off surface protection film with the peeling rate of 40m per minute, makes simultaneously
The most described polarization plates surface is measured with the every 10ms of surface potential meter (Keyence (strain) system)
Surface potential, using the maximum of the absolute value of surface potential now as peel off electrostatic pressure
(kV)。
The confirmation method ＞ of the surface contamination of ＜ surface protection film
Will be in polarizer (polyvinyl alcohol film containing iodine) upper use ultraviolet-curing adhesive patch
Close polarization plates (AG-LR polarization plates) that have acrylic film, that process through the low reflection of anti-dazzle
As adherend.Surface make-up machine at glass plate is fitted this polarization plates.Then, at polarization
After on the acrylic film on the surface of plate, laminating is cut into the surface protection film of width 25mm,
Preserve 3 days and 30 days under the experimental enviroment of 23 DEG C × 50%RH.Then, surface protection is peeled
Film, has pollution-free with the surface of visualization polarization plates, confirmation form surface pollution.As surface
The criterion of contaminative, in polarization plates, the situation of pollution-free transfer is (zero), in polarization plates
On confirm the situation of pollution transportation for (×).
To obtained embodiment 1～3 and the survey that is measured of the surface protection film of comparative example 1～3
Determine result as shown in table 1." 2EHA " represents 2-ethylhexyl acrylate, " HEA " table
Showing 2-hydroxyethylmethacry,ate, " #400G " represents methoxy poly (ethylene glycol) (400) first
Base acrylate, " AS agent (1) " represents double fluorine sulfimide lithium, and " AS agent (2) " represent double
Trifluoromethanesulfonimide lithium, " AS agent (3) " represent 1-nonylpyridine phosphorus hexafluoride hydrochlorate,
" SRX-345 " represents SRX-345, and " SRX-211 " represents SRX-211, " SRX212 "
Represent platinum catalyst SRX-212." 1.5E10 " of this outer surface resistivity represents 1.5 × 1010。
[table 1]
Measurement result as shown in Table 1 understands:
The surface protection film of embodiments of the invention 1～3 has the cohesive force of appropriateness, to adherend
Surface no-pollution.Even if additionally, adherend is the polarization plates employing acrylic film, by table
Stripping electrostatic pressure when surface protective film is peeled off from adherend is the lowest.
On the other hand, for being not added with the surface of the comparative example 1 of antistatic additive in peeling agent layer
Protecting film and be not added with the surface protection film of comparative example 2 of antistatic additive in adhesive layer,
Stripping electrostatic pressure when being peeled off from adherend by surface protection film uprises.Additionally, for viscous
The surface of the comparative example 3 employing identical type antistatic additive in knot oxidant layer and peeling agent layer is protected
Cuticula, stripping electrostatic when being peeled off from adherend by surface protection film forces down, is good,
But after stripping, the pollution to adherend increases.
That is, the surface protection film of comparative example 1～3 is difficult to take into account the reduction of stripping electrostatic pressure and to quilt
The low stain of viscous thing.On the other hand, for the addition of not in adhesive layer with peeling agent layer
With the surface protection film of the embodiment 1～3 of kind antistatic additive, peel off the reducing effect of electrostatic pressure
Height, and not pollution to adherend, can obtain good surface protection film.
Industrial applicibility
The surface protection film of the present invention can be used in such as polarization plates, polarizer, lens coating,
The optical films such as anti-reflective film, hard coat film, transparent and electrically conductive film, other various opticses etc.
In production process etc., fit in this optics etc., protect surface.Additionally, the table of the present invention
The amount of the electrostatic produced when surface protective film is peeled off from adherend is low, and peels off antistatic property
Rheological parameters' change with time and the pollution to adherend are few, it is possible to increase the yield rate of production process, in industry
On value big.
Claims (6)
1. a surface protection film, it is characterised in that be made up of the resin with the transparency
Base material film a face on, formed adhesive layer, this adhesive layer contains as antistatic additive
Ionic compound, there is the stripping film of peeling agent layer and be fitted in this via described peeling agent layer and glue
In knot oxidant layer, described peeling agent layer contains alkali metal salt and silicone remover, described alkali gold
The composition belonging to salt is transferred to the surface of described adhesive layer from described stripping film, shells from adherend
Stripping electrostatic pressure when described adhesive layer reduces.
Surface protection film the most according to claim 1, it is characterised in that described ion
Compound is not alkali metal salt.
Surface protection film the most according to claim 1 and 2, it is characterised in that described
Adhesive layer is formed by the crosslinking of (methyl) acrylate copolymer.
4. according to the surface protection film according to any one of claims 1 to 3, it is characterised in that
From being+0.7kV～-0.7kV as surface potential when peeling off the optical film of adherend.
5. according to the surface protection film according to any one of Claims 1 to 4, it is characterised in that
Peeling force when being peeled off from described adhesive layer by described stripping film is
0.005～0.3N/50mm.
6. it is fitted with the optics according to the surface protection film according to any one of Claims 1 to 5
Parts.
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| JP2015064080A JP6339515B2 (en) | 2015-03-26 | 2015-03-26 | Surface protective film and optical component on which it is bonded |
| JP2015-064080 | 2015-03-26 |
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| JP6343057B1 (en) * | 2017-03-31 | 2018-06-13 | 住友化学株式会社 | Polarizing plate with protective film and optical laminate |
| JP7037281B2 (en) * | 2017-03-31 | 2022-03-16 | リンテック株式会社 | Antistatic silicone adhesive composition and protective sheet |
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| 李子东: "《胶黏剂助剂》", 30 June 2009, 化学工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI699284B (en) | 2020-07-21 |
| KR20160115697A (en) | 2016-10-06 |
| CN106010324B (en) | 2021-01-19 |
| KR101968924B1 (en) | 2019-04-15 |
| TW201702078A (en) | 2017-01-16 |
| TW202010642A (en) | 2020-03-16 |
| TWI679113B (en) | 2019-12-11 |
| KR101884687B1 (en) | 2018-08-02 |
| KR20180089894A (en) | 2018-08-09 |
| JP6339515B2 (en) | 2018-06-06 |
| JP2016182732A (en) | 2016-10-20 |
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