CN108237736A - Optical film and preparation method - Google Patents
Optical film and preparation method Download PDFInfo
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- CN108237736A CN108237736A CN201611213835.0A CN201611213835A CN108237736A CN 108237736 A CN108237736 A CN 108237736A CN 201611213835 A CN201611213835 A CN 201611213835A CN 108237736 A CN108237736 A CN 108237736A
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
-
- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using 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
- B32B38/00—Ancillary operations in connection with laminating processes
-
- 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
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- 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
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
-
- 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
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
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Abstract
This application provides a kind of optical film and preparation methods.The optical film includes:Optical functional layer;Optical element layer is arranged on the surface of above-mentioned optical functional layer;Aqueous peelable protective layer is arranged on the surface far from above-mentioned optical functional layer of above-mentioned optical element layer.The surface of optical element layer in the optical film is provided with aqueous peelable protective layer; the material of the aqueous peelable protective layer is aqueous peelable protection glue; the optical film can be reduced in preparation process to the pollution of environment; in addition, the cost of the aqueous peelable protective layer is far below the cost of other protective layers of the prior art;Also, without warping phenomenon after the aqueous peelable glue dries, docile property is preferable, does not influence the use of subsequent optical film;In addition, the aqueous peelable protective layer is easily peeled off, and do not remain so that the surface of the optical element layer after stripping is more smooth.
Description
Technical field
This application involves optical material field, in particular to a kind of optical film and preparation method.
Background technology
Optical film is mainly used for display camera shooting etc., which includes optical element layer and be arranged on optical element layer one
Optical functional layer on a surface.Optical film is to the more demanding of film surface.And the optical element in film group in process of production
Layer, which is easy to be produced board, to be scratched.
For optical element layer is protected not to be scraped off in process of production, the prior art fits to optical element using protective layer
Optical element layer is protected to avoid contact to the surface in deflector roll face on layer.
In the prior art, setting protective layer technics comparing is complicated, and protective layer needs that optical element layer is followed to enter in baking oven,
Since two layers of percent thermal shrinkage is different, and the surface of the optical film after drying is caused to generate different degrees of warpage, later its
He can not use in making technology.
And if using the protective layer of identical shrinking percentage and optical element layer, simplest method is protective layer and optics base
Material layer uses identical material, but the method raw material cost can directly be doubled.And if using other heat-resisting materials as guarantor
Sheath, the cost of optical film are also higher.
In addition, protective layer of the prior art is not easily stripped, the remained on surface matcoveredn of the optical element layer after stripping
Material so that subsequently can not also use.
Invention content
The main purpose of the application is to provide a kind of optical film and preparation method, to solve protection of the prior art
The problem of layer is not easily stripped.
To achieve these goals, according to the one side of the application, a kind of optical film is provided, which includes:
Optical functional layer;Optical element layer is arranged on the surface of above-mentioned optical functional layer;Aqueous peelable protective layer, is arranged on above-mentioned
On the surface far from above-mentioned optical functional layer of optical element layer.
Further, the material for forming above-mentioned aqueous peelable protective layer includes aqueous polyurethane emulsion, water soluble acrylic acid
Ester lotion mould release and water.
Further, in the material for forming above-mentioned aqueous peelable protective layer, the weight of above-mentioned aqueous polyurethane emulsion
Percentage between 19.5~60%, the weight percent of above-mentioned water-and acrylate lotion mould release between 0.5~20%,
The weight percent of above-mentioned water is between 20~80%.
Further, the thickness of above-mentioned aqueous peelable protective layer is between 1~10 μm, preferably above-mentioned aqueous peelable guarantor
The thickness of sheath is between 2~6 μm.
Further, above-mentioned optical functional layer is UV-blocking layer, infrared ray barrier layer and/or aqueous vapor separation layer.
Further, the thickness of above-mentioned optical element layer is between 10~500 μm, the thickness of preferably above-mentioned optical element layer
Between 25~125 μm.
According to the another aspect of the application, a kind of preparation method of optical film is provided, which includes:Step
S1 sets aqueous peelable glue on a surface of optical element layer, and above-mentioned aqueous peelable glue is dried,
Form aqueous peelable protective layer;Step S2 is set on the surface far from above-mentioned aqueous peelable protective layer of optical element layer
Optical function resin is put, forms optical functional layer.
Further, above-mentioned aqueous peelable glue includes aqueous polyurethane emulsion, water-and acrylate lotion mould release
With water, preferably in above-mentioned aqueous peelable glue, the weight percent of above-mentioned aqueous polyurethane emulsion 19.5~60% it
Between, between 0.5~20%, the weight percent of above-mentioned water exists the weight percent of above-mentioned water-and acrylate lotion mould release
Between 20~80%.
Further, it in above-mentioned steps S1, is applied using slit extrusion coating methods, gravure coating process or silk-screen printing rubbing method
The peelable glue of fabric aqueous.
Further, in above-mentioned steps S2, using the method that is coated with, nick rubbing method, slot coated method, PVD method, CVD method or
PECVD sets optical function resin.
Using the technical solution of the application, the surface of the optical element layer in the optical film is provided with aqueous peelable protection
Layer, the material of the aqueous peelable protective layer are aqueous peelable protection glue, and whens glue dries does not have organic solvent
Volatilization, reduces the optical film in preparation process to the pollution of environment, in addition, the cost of the aqueous peelable protective layer is far low
In the 1/2~1/3 of the cost of other protective layers of the prior art, the only about cost of protective layer of the prior art;And
And without warping phenomenon after the aqueous peelable glue dries, docile property is preferable, does not influence the use of subsequent optical film;In addition,
The aqueous peelable protective layer is easily peeled off, and do not remain so that the surface of the optical element layer after stripping is more smooth.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.In the accompanying drawings:
Fig. 1 shows the structure diagram of optical film provided according to a kind of typical embodiment of the application.
Wherein, above-mentioned attached drawing is marked including the following drawings:
1st, optical functional layer;2nd, optical element layer;3rd, aqueous peelable protective layer.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, protective layer of the prior art is not easily stripped, in order to which the technology solved as above is asked
Topic, present applicant proposes a kind of optical film and preparation methods.
In a kind of typical embodiment of the application, a kind of optical film is provided, as shown in Figure 1, the light optical film packet
Optical functional layer 1, optical element layer 2 and aqueous peelable protective layer 3 are included, wherein, optical element layer 2 is arranged on above-mentioned optics work(
The surface of ergosphere 1;Aqueous peelable protective layer 3 is arranged on the surface far from above-mentioned optical functional layer 1 of above-mentioned optical element layer 2
On.
The surface of optical element layer in the optical film is provided with aqueous peelable protective layer, the aqueous peelable protective layer
Material for aqueous peelable protection glue, whens glue dries, does not have organic solvent volatilization, reduces the optical film and exists
To the pollution of environment in preparation process;In addition, different from the raw material of protective layer of the prior art, the protective layer in the application is simultaneously
Base material and glue are asynchronously needed, and only needs glue, also, the protective layer in the application reduces in the production process
Be bonded this step process, therefore, the cost of the aqueous peelable protective layer far below other protective layers of the prior art into
This, only about the 1/2~1/3 of the cost of protective layer of the prior art;Also, nothing is stuck up after the aqueous peelable glue dries
Qu Xianxiang, docile property is preferable, does not influence the use of subsequent optical film;In addition, the aqueous peelable protective layer is easily peeled off, and
It does not remain so that the optical functional layer in more smooth the application in surface of the optical element layer after stripping is to refer to realization one
Determine the film layer of optical property, for example ultraviolet light and/or infrared ray can be obstructed.
Optical element layer in the application refers to any optical element layer of the prior art, and those skilled in the art can be with
Suitable optical element layer is selected, such as optics pet layer, COC layers, COP layers, PMMA layers or PI can be selected according to actual conditions
Layer etc..
In order to further ensure the aqueous adhesive water capacity is easily peelable, and docile property is more preferable, it is dry after without warping phenomenon,
In another embodiment of the application, the material for forming above-mentioned aqueous peelable protective layer includes aqueous polyurethane emulsion, aqueous
Acrylic acid ester emulsion mould release and water.
In another embodiment of the application, in material (the i.e. undried water for forming above-mentioned aqueous peelable protective layer
The peelable glue of property) in, the weight percent of above-mentioned aqueous polyurethane emulsion is between 19.5~60%, above-mentioned water soluble acrylic acid
The weight percent of ester lotion mould release is between 0.5~20%, and the weight percent of above-mentioned water is between 20~80%.In this way
While can ensureing aqueous peelable glue homogeneous film formation, there is good stripping performance.
In the another embodiment of the application, the thickness of above-mentioned aqueous peelable protective layer is between 1~10 μm.It is such
Thickness range can not only preferably protect optical element layer, and more easily peelable, moreover it is possible to so that the cost of optical film is relatively low.
In order to further reduce the cost of optical film, and so that aqueous peelable protective layer is more easily peelable, the application is excellent
The thickness for stating aqueous peelable protective layer is chosen between 2~6 μm.
In the another embodiment of the application, above-mentioned optical functional layer for UV-blocking layer, infrared ray barrier layer and/or
Aqueous vapor separation layer.Ability can select suitable optical functional layer with technical staff according to actual conditions.
In order to enable optical element layer can preferably protect optical functional layer, and reduce the cost of optical film simultaneously, this
The thickness of application preferably above-mentioned optical element layer is between 10~500 μm.
In the another embodiment of the application, the thickness of above-mentioned optical element layer is between 25~125 μm.It in this way can be more
While further ensureing the protective effect of optical element layer, its cost is reduced.
In the typical embodiment of another of the application, a kind of preparation method of optical film, the preparation method are provided
Including:Step S1 sets aqueous peelable glue, and to above-mentioned aqueous peelable glue on a surface of optical element layer
It is dried, forms aqueous peelable protective layer;Step S2, in optical element layer far from above-mentioned aqueous peelable protective layer
Optical function resin on surface is set, forms optical functional layer.
The preparation method sets aqueous peelable glue on a surface of optical element layer, during the glue dries not
Organic solvent volatilization is had, reduces the optical film in preparation process to the pollution of environment, in addition, the aqueous peelable protection
The cost of layer is far below the cost of other protective layers of the prior art, only about the cost of protective layer of the prior art
1/2~1/3;Also, without warping phenomenon after the aqueous peelable glue dries, docile property is preferable, does not influence subsequent optical film
Use;In addition, the aqueous peelable protective layer is easily peeled off, and do not remain so that the table of the optical element layer after stripping
Face is more smooth.
In another embodiment of the application, above-mentioned aqueous peelable glue includes aqueous polyurethane emulsion, aqueous acrylamide
Acid esters lotion mould release and water.
In order to further ensure the aqueous adhesive water capacity is easily peelable, and docile property is more preferable, it is dry after without warping phenomenon,
And in above-mentioned aqueous peelable glue, the weight percent of above-mentioned aqueous polyurethane emulsion is above-mentioned between 19.5~60%
The weight percent of water-and acrylate lotion mould release between 0.5~20%, the weight percent of above-mentioned water 20~
Between 80%.
In another embodiment of the application, slit extrusion coating methods, gravure coating process or silk are used in above-mentioned steps S1
Wire mark brush coating method applies fabric aqueous adhesive water.Those skilled in the art can select suitable method to set according to actual conditions
Put aqueous peelable glue.
In the another embodiment of the application, in above-mentioned steps S2, using the method that is coated with, nick rubbing method, slot coated method,
The various film build method setting optical function resins such as PVD method, CVD method, PECVD.
In order to facilitate optical film subsequent use, also, optical film is avoided to be contaminated, the preferably above-mentioned preparation side of the application
It is further included in method:The step that optical film including optical element layer, optical functional layer and aqueous peelable protective layer is wound
Suddenly.
Embodiment 1
The material of aqueous peelable protective layer includes aqueous polyurethane emulsion, water-and acrylate lotion mould release and water,
Wherein, the weight percent of aqueous polyurethane emulsion is 19.5%, the weight percent of above-mentioned water-and acrylate lotion mould release
Than being 0.5%, the weight percent of above-mentioned water is 80%.
By unreeling for optics pet layer (the optical element layer) on let off roll, using slit fashion of extrusion in optics pet layer
Above-mentioned aqueous peelable glue is coated on another surface and is dried, forms aqueous peelable protective layer, and aqueous peelable
The thickness of protective layer is 2 μm;Then, it using slit fashion of extrusion, applies and deploys troops on garrison duty on a surface of the pet layer that thickness is 25 μm
Ultraviolet materials is simultaneously dried, and forms optical functional layer.
Embodiment 2
With embodiment 1 difference lies in:The weight percent of aqueous polyurethane emulsion is 60%, above-mentioned water-and acrylate
The weight percent of lotion mould release is 20%, and the weight percent of above-mentioned water is 20%.The aqueous peelable protective layer formed
Thickness for 6 μm, the thickness of optical element layer is 125 μm.
Embodiment 3
With embodiment 1 difference lies in:The weight percent of aqueous polyurethane emulsion is 40%, above-mentioned water-and acrylate
The weight percent of lotion mould release is 10.25%, and the weight percent of above-mentioned water is 49.75%.What is formed is aqueous peelable
The thickness of protective layer is 1 μm, and the thickness of optical element layer is 10 μm.
Embodiment 4
With embodiment 1 difference lies in:The thickness of the aqueous peelable protective layer formed is 10 μm, the thickness of optical element layer
Spend is 500 μm.
Embodiment 5
With being distinguished as embodiment 2:The weight percent of above-mentioned aqueous polyurethane emulsion is 15%, not 19.5~60%
Between, also, the weight percent of water-and acrylate lotion mould release is 5%, between 0.5~20%, the weight hundred of water
Divide than being 80%, between 20~80%.
Embodiment 6
With being distinguished as embodiment 2:The weight percent of above-mentioned aqueous polyurethane emulsion be 50%, 19.5~60% it
Between, also, the weight percent of water-and acrylate lotion mould release is 0.1%, not between 0.5~20%, the weight of water
Percentage is 49.9%, between 20~80%.
Embodiment 7
With being distinguished as embodiment 2:The thickness of aqueous peelable protective layer is 20 μm, not between 1~10 μm.
Embodiment 8
With being distinguished as embodiment 2:The thickness of optical element layer is 5 μm, not between 10~500 μm.
Comparative example
With being distinguished as embodiment 2:The protective layer for being arranged on optical element layer is the PE layers of 25um.
The peeling force of aqueous peelable protective layer in optical film is detected using 180 ° of peel test force methods, and this is protected
Layer stripping after, have noresidue on optical element layer using visually observing, residue number, by 10cm2Each embodiment with it is right
After the optical film of ratio heats heating in 30 minutes at a temperature of 80 DEG C, the warpage of aqueous peelable protective layer is measured using ruler
Degree.Specifically it the results are shown in Table 1.
Table 1
By the data in above-mentioned table 1 it is found that by the data in above-mentioned table 1 it is found that the PE layers of the optical film of comparative example are resistance to not
Firmly high temperature and melt, lead to sample deformations, can not test;Compared with Example 2, in embodiment 5, the weight of aqueous polyurethane emulsion
Percentage is measured not between 19.5~60% so that after aqueous peelable protective layer stripping, the residue of optical element layer is more;
In embodiment 6, the weight percent of water-and acrylate lotion mould release is not between 0.5~20% so that aqueous peelable
The peeling force of protective layer is larger, and residue is more;The thickness of aqueous peelable protective layer in embodiment 7 not 1~10 μm it
Between so that the peeling force of aqueous peelable protective layer is larger, and aqueous peelable protective layer warpage is serious;Optics in embodiment 8
For the thickness of substrate layer not between 10~500 μm, aqueous peelable protective layer warpage is serious.
It can be seen from the above description that the application the above embodiments realize following technique effect:
1), the surface of the optical element layer in the optical film in the application is provided with aqueous peelable protective layer, this is aqueous
The material of peelable protective layer is aqueous peelable protection glue, and whens glue dries does not have organic solvent volatilization, reduces
The optical film in preparation process to the pollution of environment, in addition, the cost of the aqueous peelable protective layer is far below existing skill
The 1/2~3/1 of the cost of other protective layers in art, the only about cost of protective layer of the prior art;Also, this is aqueous
Without warping phenomenon after peelable glue dries, docile property is preferable, does not influence the use of subsequent optical film;In addition, this it is aqueous can
Stripping protective layer is easily peeled off, and do not remain so that the light in more smooth the application in surface of the optical element layer after stripping
It is the film layer for referring to realize certain optical property, for example can obstruct ultraviolet light and/or infrared ray to learn functional layer.
2), the preparation method in the application sets aqueous peelable glue, the glue on a surface of optical element layer
Water does not have organic solvent volatilization when drying, reduce the optical film in preparation process to the pollution of environment, in addition, the water
Property peelable protective layer cost be far below the costs of other protective layers of the prior art, only about guarantor of the prior art
The 1/2~3/1 of the cost of sheath;Also, without warping phenomenon after the aqueous peelable glue dries, docile property is preferable, does not influence
The use of subsequent optical film;In addition, the aqueous peelable protective layer is easily peeled off, and do not remain so that the light after stripping
The surface for learning substrate layer is more smooth.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of optical film, which is characterized in that the optical film includes:
Optical functional layer (1);
Optical element layer (2) is arranged on the surface of the optical functional layer (1);And
Aqueous peelable protective layer (3) is arranged on the surface far from the optical functional layer (1) of the optical element layer (2)
On.
2. optical film according to claim 1, which is characterized in that form the material of the aqueous peelable protective layer (3)
Including aqueous polyurethane emulsion, water-and acrylate lotion mould release and water.
3. optical film according to claim 2, which is characterized in that in the material for forming the aqueous peelable protective layer (3)
In material, for the weight percent of the aqueous polyurethane emulsion between 19.5~60%, the water-and acrylate lotion is release
The weight percent of agent is between 0.5~20%, and the weight percent of the water is between 20~80%.
4. optical film according to claim 1, which is characterized in that the thickness of the aqueous peelable protective layer (3) 1~
Between 10 μm, the thickness of preferably described aqueous peelable protective layer (3) is between 2~6 μm.
5. optical film according to claim 1, which is characterized in that the optical functional layer (1) is UV-blocking layer, red
Outside line barrier layer and/or aqueous vapor separation layer.
6. optical film according to claim 1, which is characterized in that the thickness of the optical element layer (2) is at 10~500 μm
Between, the thickness of preferably described optical element layer (2) is between 25~125 μm.
7. a kind of preparation method of optical film, which is characterized in that the preparation method includes:
Step S1 sets aqueous peelable glue, and to the aqueous peelable glue on a surface of optical element layer
It is dried, forms aqueous peelable protective layer;And
Step S2 sets optical function resin, shape on the surface far from the aqueous peelable protective layer of optical element layer
Into optical functional layer.
8. preparation method according to claim 7, which is characterized in that the aqueous peelable glue includes aqueous polyurethane
Lotion, water-and acrylate lotion mould release and water, preferably in the aqueous peelable glue, the aqueous polyurethane emulsion
Weight percent between 19.5~60%, the weight percent of the water-and acrylate lotion mould release 0.5~
Between 20%, the weight percent of the water is between 20~80%.
9. preparation method according to claim 7, which is characterized in that in the step S1, using slit extrusion coating methods,
Gravure coating process or silk-screen printing rubbing method apply fabric aqueous adhesive water.
10. preparation method according to claim 7, which is characterized in that in the step S2, applied using the method that is coated with, nick
Cloth method, slot coated method, PVD method, CVD method or PECVD setting optical function resin.
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109880439A (en) * | 2019-02-15 | 2019-06-14 | 江西省赐彩新材料科技有限公司 | A kind of aqueous peelable glue of no-solvent type and its preparation method and application |
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CN109880439A (en) * | 2019-02-15 | 2019-06-14 | 江西省赐彩新材料科技有限公司 | A kind of aqueous peelable glue of no-solvent type and its preparation method and application |
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