CN106125172B - A kind of diffusion barrier and preparation method thereof - Google Patents
A kind of diffusion barrier and preparation method thereof Download PDFInfo
- Publication number
- CN106125172B CN106125172B CN201610651996.1A CN201610651996A CN106125172B CN 106125172 B CN106125172 B CN 106125172B CN 201610651996 A CN201610651996 A CN 201610651996A CN 106125172 B CN106125172 B CN 106125172B
- Authority
- CN
- China
- Prior art keywords
- layer
- diffusion barrier
- diffusion
- resist blocking
- particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
- G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
Abstract
The present invention provides a kind of diffusion barriers and preparation method thereof.The diffusion barrier includes：Substrate layer has opposite first surface and second surface；Two layers of diffusion layer, is respectively set over the first and second surface；Resist blocking and that layer is provided at least one layer of diffusion layer in two layers of diffusion layer, resist blocking and that layer is arranged on the surface of the separate substrate layer of diffusion layer, and the grain size of the resist blocking and that particle in resist blocking and that layer is between 50~100nm.Use grain size for nano level resist blocking and that particle, and by its size controlling between 50~100nm, it is surprised to find that, the resist blocking and that particle enables diffusion barrier under the premise of keeping ideal resistance to blocking, simultaneously so that the refractive index of diffusion barrier face coat is less than the refractive index of substrate layer, to effectively reduce the light scattering on surface, and then effectively increase the light transmittance of the diffusion barrier of the application, and the optical device with the diffusion barrier briliancy.
Description
Technical field
The present invention relates to field of optical films, in particular to a kind of diffusion barrier and preparation method thereof.
Background technology
Optical diffusion membrane (abbreviation diffusion barrier) is widely used in the optical devices such as liquid crystal display, headlamp, especially
In liquid crystal display device, diffusion barrier is the key components and parts in backlight module, and diffusion barrier can be utilized to promote light luminance, and
The soft dispersion of light that light guide plate is received provides a uniform area source for display, to play the role of expanding visual angle.
The purpose of diffusion barrier is that linear light sorurce or point source of light are uniformly converted into area source, and action principle is to utilize light
It is passed through in the medium with different refractivity, light generates many phenomenon that reflecting, reflect, scattering, and forms optics diffusion
Effect.In addition, when preparing diffusion barrier, in order to avoid the adhesion of diffusion barrier during retractable volume, setting resist blocking and that is generally also needed to
Layer.
Currently, the method for preparing diffusion barrier generally has extrusion molding and rubbing method.Application No. is 201310478682.2 China
Patent application publication prepares the technical solution of diffusion barrier using extrusion molding, and diffusion barrier is by diffusion layer, supporting layer and resist blocking and that
Layer composition, diffusion layer are covered in the upper surface of support, and resist blocking and that layer is covered in the lower surface of supporting layer, supporting layer PET, diffusion
Layer is made of PET, antistatic agent, glass microballoon, and resist blocking and that layer is made of PET, silicon dioxide granule and antistatic agent.When preparation
Glassy state slab is obtained by co-extrusion pressure is carried out after diffusion masterbatch, resist blocking and that masterbatch and PET slice fusion plastifications, then, by the glass
Glass state slab carries out cross directional stretch and longitudinal stretching.In addition, the Chinese patent application application No. is 201210027668.6 discloses
It is female to be mixed to form scattering by a kind of method preparing diffusion barrier using rubbing method for little particle scattering particles and polyester slice
Then scattering masterbatch and polyester slice are mixed to form mixture A by material, mixture A and substrate material B are then carried out co-extrusion pressure
Polyester base film is formed with biaxial tension, will then have the coating fluid that bulky grain scattering particles, binder resin and diluent are formed
Be coated on polyester base film it is dry after obtain diffusion barrier, wherein coating fluid component includes：Polymethyl methacrylate (PMMA) grain
Son, polystyrene (PS) particle, acrylic resin, isopropanol and butanol.
But there is respective defect in above two mode.Wherein, although the cost for the diffusion barrier that extrusion molding obtains compared with
It is low, but the presence of glass microballoon therein and silicon dioxide granule can substantially reduce its light transmittance and briliancy, greatly limit
Its application；And the diffusion barrier that rubbing method obtains, due to more one of process, cost is compared with extrusion type height；And its curing
Generally heat cure and UV solidifications, wherein heat cure cost is relatively low, but wherein a large amount of organic solvent needs to volatilize, to human body and
Environment can all damage；Another kind is that UV cures, and it is also possible to cause damages to practitioner.
Invention content
The main purpose of the present invention is to provide a kind of diffusion barriers and preparation method thereof, to solve diffusion barrier in the prior art
There cannot be the problem of enhanced blocking resistance, light transmittance and briliancy simultaneously.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of diffusion barrier, including：Substrate layer, tool
There are opposite first surface and second surface；Two layers of diffusion layer, is respectively set over the first and second surface；Two layers of diffusion
It is provided with resist blocking and that layer at least one layer of diffusion layer in layer, resist blocking and that layer is arranged on the surface of the separate substrate layer of diffusion layer
On, and the grain size of the resist blocking and that particle in resist blocking and that layer is between 50~100nm.
Further, above-mentioned resist blocking and that particle is one kind in silicon dioxide granule, acrylic particle and alundum (Al2O3)
Or it is a variety of.
Further, the resist blocking and that coating fluid for forming above-mentioned resist blocking and that layer includes with weight percent gauge：10~15%
Water-base resin, preferably water-base resin are water-based acrylic resin or waterborne polyurethane resin；0.1~0.2% resist blocking and that particle；It is excellent
0.02~0.08% wetting agent of choosing；Preferred 0.05~0.15% amine neutralizer, preferably amine neutralizer are 2- amino -2- first
Base -1- propyl alcohol, ammonium hydroxide and/or diethanol amine；And the water of surplus.
Further, the thickness of two layers of above-mentioned resist blocking and that layer is identical or different, and between 50~100nm, preferably anti-
The volume of adhesion particle accounts for the 2~5% of the dry film volume of resist blocking and that layer.
Further, the diffusion masterbatch for forming above-mentioned diffusion layer includes matrix and scattering particles, and diffusion masterbatch contains weight
The scattering particles that content is 10~20%, the grain size of scattering particles are 0.8~5 μm, preferably scattering particles be refractive index be 1.4~
1.75 scattering particles, further preferred scattering particles are polymethyl methacrylate particle, polystyrene particle, polyester granules
With it is one or more in makrolon particle；Preferred substrate is polyethylene terephthalate, poly terephthalic acid fourth two
It is one or more in alcohol ester and polyethylene naphthalate.
Further, the thickness of two layers of above-mentioned diffusion layer is identical or different and between~6 μm.
Further, above-mentioned substrate layer is pet layer.
According to another aspect of the present invention, a kind of production method of above-mentioned diffusion barrier is provided, which includes：Step
Rapid S1 forms the sheet of substrate layer and two layers of diffusion layer with diffusion barrier using co-extrusion platen press；Sheet is carried out the by step S2
One-off drawing obtains stretching film；Step S3 is coated with the resist blocking and that for forming diffusion barrier at least one side of stretching film
The resist blocking and that coating fluid of layer, obtains wet coating diaphragm；And step S4, wet coating diaphragm is carried out second and is stretched, and at second
Solidification is dried in drawing process and obtains diffusion barrier.
Further, above-mentioned steps S2 includes：After sheet is preheated 5~15 seconds at 70~135 DEG C, hot sheet is obtained；
Make hot sheet into 135~155 DEG C farinfrared heat, and with 3.0~3.5 stretching ratio carry out longitudinal stretching, 2~
The cooling that relaxes is carried out after 3s under conditions of 20~30 DEG C, obtains stretching film.
Further, above-mentioned steps S4 includes：By wet coating diaphragm with 3.5~4 stretching ratio carry out after stretching horizontally according to
Relaxation 10~15 seconds, obtains diffusion barrier at shaping 5~8 seconds, 45~160 DEG C at secondary 210~230 DEG C of process.
It applies the technical scheme of the present invention, uses grain size for nano level resist blocking and that particle, and by its size controlling 50
Between~100nm, it has unexpectedly been found that, which enables diffusion barrier under the premise of keeping ideal resistance to blocking, simultaneously
So that the refractive index of diffusion barrier face coat is less than the refractive index of substrate layer, to effectively reduce the light scattering on surface, in turn
Effectively increase the light transmittance of the diffusion barrier of the application, and the briliancy of the optical device with the diffusion barrier.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram for the diffusion barrier that a kind of preferred embodiment according to the present invention provides.
Wherein, above-mentioned attached drawing includes the following drawings label：
10, substrate layer；20, diffusion layer；30, resist blocking and that layer.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As recorded in background technology, in the prior art in order to realize that resist blocking and that acts on, in the resist blocking and that layer 30 of diffusion barrier
Middle incorporation silicon dioxide granule, but there is the light transmittance for leading to diffusion barrier and briliancy reduction in silica, in order to solve this
Problem, for the application one kind typically embodiments, provides a kind of diffusion barrier, which includes substrate layer 10, two layers of diffusion
Layer 20 and one or two layers resist blocking and that layer 30, substrate layer 10 have opposite first surface and second surface；Two layers of diffusion layer 20
It is respectively set over the first and second surface；It is provided with resist blocking and that layer at least one layer of diffusion layer in two layers of diffusion layer
30, resist blocking and that layer 30 is arranged on the surface of the separate substrate layer 10 of diffusion layer, and the resist blocking and that particle in resist blocking and that layer 30
Grain size is between 50~100nm.
The application uses grain size for nano level resist blocking and that particle, and by its size controlling between 50~100nm, unexpected
Ground finds that the resist blocking and that particle enables diffusion barrier under the premise of keeping ideal resistance to blocking, while diffusion film surface is applied
The refractive index of layer is less than the refractive index of substrate layer, to effectively reduce the light scattering on surface, and then effectively increases the application
Diffusion barrier light transmittance, and the optical device with the diffusion barrier briliancy.
Due to the application resist blocking and that particle size controlling in the preferred range, keeping enhanced blocking resistance
Influence simultaneously to light is smaller, and the resist blocking and that particle of the application can be in silica, acrylic particle and alundum (Al2O3)
It is one or more, wherein the effect of silica is best.
Since the number of plies of the diffusion barrier of the application is more, for the ease of making, the application shape preferably by the way of coating
At resist blocking and that layer 30, wherein the resist blocking and that coating fluid for forming the resist blocking and that layer 30 includes with weight percent gauge：10~15%
In water-base resin, 0.1~0.2% resist blocking and that particle, preferred 0.02~0.08% wetting agent, preferred 0.05~0.15% amine
With agent and the water of surplus, preferably water-base resin is water-based acrylic resin or waterborne polyurethane resin；It is preferred that wetting agent is104BC (aerochemistry),Wet505 (enlightening high) orOT-75(Cytec)；In preferred amines
It is 2-amino-2-methyl-1-propanol, ammonium hydroxide or diethanol amine with agent.Organic solvent-free in above-mentioned resist blocking and that coating fluid, therefore at
This is low and more environmentally-friendly.
The thickness of two layers of resist blocking and that layer 30 of the application is identical or different, and preferably between 50~100nm, realization is consuming
Ideal resist blocking and that effect is realized under the premise of taking alap raw material.In addition, in order to realize ideal resist blocking and that effect
On the basis of, influence of the resist blocking and that particle to light is reduced as far as possible, and the volume of preferably resist blocking and that particle accounts for the dry film of resist blocking and that layer 30
The 2~5% of volume.
In addition, when relationship of the present inventor between the light diffusion effect and scattering particles to diffusion layer is studied
It was found that the obvious effect of the particle size and refractive index of scattering particles to diffusion effect, therefore it is preferably formed as diffusion layer
Diffusion masterbatch includes matrix and scattering particles, and diffusion masterbatch contains the scattering particles that weight content is 10~20%, scattering particles
Grain size be 0.8~5 μm, further preferred scattering particles is the scattering particles that refractive index is 1.4~1.75.It is scattered by controlling
Negative bridging effect of the scattering particles to light has been effectively relieved in the grain size of particle.On this basis, grain is further preferably scattered
Son is one in polymethyl methacrylate particle (PMMA particles), polystyrene particle, polyester granules and makrolon particle
Kind is a variety of.Meanwhile the common basis material of the application may be used in the matrix that can be used for the application diffusion layer, for example, it is poly- to benzene
It is one or more in naphthalate (PET), polybutylene terephthalate (PBT) and polyethylene naphthalate.
In addition, the thickness of the diffusion layer of the application can also refer to the prior art, the thickness of preferably two layers diffusion layer of the application
Spend it is identical or different and between 3~6 μm, to realize the effect of 95% or more haze height masking.
Further, the material for forming the application substrate layer 10 may be conventional material in the prior art, the application
It is pet layer for the ease of operating, reducing cost preferred substrates layer 10.
By foregoing description it is found that not containing the resist blocking and thats grains such as silica in the substrate layer 10 and diffusion layer of the application
Resist blocking and that particle is arranged, while solving resist blocking and that in son only in resist blocking and that layer 30 so that diffusion barrier has haze, height
The excellent performance of light transmittance.
In another typical embodiment of the application, a kind of production method of above-mentioned diffusion barrier, the making are provided
Method includes：Step S1 forms the sheet of substrate layer and two layers of diffusion layer with diffusion barrier using co-extrusion platen press；Step S2,
Sheet is subjected to first time stretching, obtains stretching film；Step S3, coating, which is formed, at least one side of stretching film expands
The resist blocking and that coating fluid for dissipating the resist blocking and that layer of film, obtains wet coating diaphragm；And step S4, wet coating diaphragm is carried out second and is drawn
It stretches, and solidification is dried in second of drawing process and obtains diffusion barrier.
The diffusion barrier of the application is while having the advantages that above-mentioned, in the production process, tool is formd using co-extrusion platen press
There is the sheet of substrate layer and diffusion layer, therefore reduces the cost of manufacture of diffusion barrier；Meanwhile used resist blocking and that coating fluid is
Aqueous solution, therefore the not volatilization of organic solvent, it is more environmentally-friendly；Further, it stretches and separately carries out twice, and second is drawn
After being stretched outside resist blocking and that coating solution therefore progress is conducive to promote in resist blocking and that coating fluid using the high temperature of drawing process
Water volatilization.
Preferable drawing effect in order to obtain, preferably above-mentioned steps S2 include：Sheet preheats at 70~135 DEG C to 5~
After 15 seconds, hot sheet is obtained；Hot sheet is set to be heated into 135~155 DEG C of farinfrared, and with 3.0~3.5 stretching times
Rate carries out longitudinal stretching, carries out the cooling that relaxes after 2~3s under conditions of 20~30 DEG C, obtains stretching film.It will be obtained
Sheet is first preheated at a lower temperature, can prevent sheet from generating film surface fold and concave point because temperature quickly increases；Then sharp
It is heated with far infrared, sheet can be made to reach softening point, to carry out Uniform Tension, base material in the stretching film obtained from
The thickness and composition of layer and diffusion layer are more uniform.
Further, it is preferable to which above-mentioned steps S4 includes：Wet coating diaphragm is subjected to cross directional stretch with 3.5~4 stretching ratio
Pass through at 210~230 DEG C relaxation 10~15 seconds at shaping 5~8 seconds, 45~160 DEG C successively afterwards, obtains diffusion barrier.Above-mentioned fixed
Under the temperature condition of type, the volatilization of the water in resist blocking and that coating fluid may advantageously facilitate.
In above-mentioned steps S1, the co-extrusion platen press that this field routine may be used forms sheet, will preferably be dissipated containing the application
The diffusion masterbatch of radion is added to according to proportioning in auxiliary extruder after mixing with polymer chips, with formation substrate layer
PET slices are respectively fed to melting in main extruder, auxiliary extruder (two), are squeezed out through co-extrusion die head, melt passes through Electrostatic Absorption
Device forms the sheet of three-decker on Quench drum.Wherein, the mass ratio for spreading masterbatch and polymer chips is 0.1~
0.3:1, polymer chips therein can be identical with the basic material in diffusion masterbatch.
Below with reference to embodiment and comparative example, the advantageous effect of the application is further illustrated.
The silicon dioxide granule used in following embodiment and comparative example is as resist blocking and that particle, wherein uses dioxy
SiClx weight content provides silica for 40% silica dispersions；PMMA particles are as scattering particles, silica
The grain size of particle and the grain size of PMMA particles are shown in Table 1.
Embodiment 1
Diffusion masterbatch (composition is shown in Table 2) containing PMMA particles and PET are sliced according to the proportioning in table 2 after mixing
It being added in two auxiliary extruders, PET slices are sent into main extruder, are then melted in main extruder and auxiliary extruder respectively,
It is squeezed out through co-extrusion die head, melt forms the sheet of three-decker by electrostatic adsorption device on Quench drum；
The sheet come from Quench bulging enters back into 145 DEG C remote by 120 DEG C of preheating roller groups progress preheating in 10 seconds
Infrared heat and under the action of downloading draw roll completion sheet longitudinal stretching, stretching ratio after 3.2,4 seconds
The cooling that relaxes is carried out under conditions of 20~30 DEG C, obtains stretching film.
Stretching film enters coating machine after cooling relaxation, is coated with the resist blocking and that prepared in advance using bar blade coating mode
Liquid is applied to the two sides of stretching film, carries out 3.8 times of stretchings subsequently into regions of lateral stretch, being utilized during cross directional stretch should
Solidification is dried in the hot wind of process, and most afterwards through 220 DEG C of thermal finalization 6 seconds, it is 12 seconds cooling and then to carry out relaxation at 120 DEG C, system
Obtain the diffusion barrier of embodiment 1, wherein the composition of resist blocking and that coating fluid is shown in Table 2.
Embodiment 2
Diffusion masterbatch containing PMMA particles and pure PET are sliced and are added to two after mixing according to the proportioning in table 2
In the auxiliary extruder of platform, PET slices are sent into main extruder, are then melted in main extruder and auxiliary extruder respectively, through coextruding die
Head squeezes out, and melt forms the sheet of three-decker by electrostatic adsorption device on Quench drum；
The sheet come from Quench bulging enters back into 135 DEG C remote red by 70 DEG C of preheating roller groups progress preheating in 15 seconds
Outside line area is heated, and the longitudinal stretching of sheet is completed under the action of downloading draw roll, and stretching ratio is after 3.5,5 seconds 20
The cooling that relaxes is carried out under conditions of~30 DEG C, obtains stretching film.
Stretching film enters coating machine after cooling relaxation, is coated with the resist blocking and that prepared in advance using bar blade coating mode
Liquid is applied to the two sides of stretching film, carries out 3.5 times of stretchings subsequently into regions of lateral stretch, being utilized during cross directional stretch should
Solidification is dried in the hot wind of process, and most afterwards through 210 DEG C of thermal finalization 8 seconds, it is 10 seconds cooling and then to carry out relaxation at 160 DEG C, system
Obtain the diffusion barrier of embodiment 2, wherein the composition of resist blocking and that coating fluid is shown in Table 2.
Embodiment 3
Diffusion masterbatch containing PMMA particles and pure PET are sliced and are added to two after mixing according to the proportioning in table 2
In the auxiliary extruder of platform, PET slices are sent into main extruder, are then melted in main extruder and auxiliary extruder respectively, through coextruding die
Head squeezes out, and melt forms the sheet of three-decker by electrostatic adsorption device on Quench drum；
The sheet come from Quench bulging enters back into 145 DEG C remote red by 135 DEG C of preheating roller groups progress preheating in 5 seconds
Outside line area is heated, and the longitudinal stretching of sheet is completed under the action of downloading draw roll, and stretching ratio is after 3.0,2 seconds 20
The cooling that relaxes is carried out under conditions of~30 DEG C, obtains stretching film.
Stretching film enters coating machine after cooling relaxation, is coated with the resist blocking and that prepared in advance using bar blade coating mode
Liquid is applied to the two sides of stretching film, carries out 4.0 times of stretchings subsequently into regions of lateral stretch, being utilized during cross directional stretch should
Solidification is dried in the hot wind of process, and most afterwards through 230 DEG C of thermal finalization 5 seconds, it is 12 seconds cooling and then to carry out relaxation at 45 DEG C, is made
The diffusion barrier of embodiment 3, wherein the composition of resist blocking and that coating fluid is shown in Table 2.
Embodiment 4
Diffusion masterbatch containing PMMA particles and pure PET are sliced and are added to two after mixing according to the proportioning in table 2
In the auxiliary extruder of platform, PET slices are sent into main extruder, are then melted in main extruder and auxiliary extruder respectively, through coextruding die
Head squeezes out, and melt forms the sheet of three-decker by electrostatic adsorption device on Quench drum；
The sheet come from Quench bulging enters back into 145 DEG C remote by 120 DEG C of preheating roller groups progress preheating in 10 seconds
Infrared heats, and the longitudinal stretching of sheet is completed under the action of downloading draw roll, and stretching ratio is after 3.2,10 seconds
The cooling that relaxes is carried out under conditions of 20~30 DEG C, obtains stretching film.
Stretching film enters coating machine after cooling relaxation, is coated with the resist blocking and that prepared in advance using bar blade coating mode
Liquid is applied to the two sides of stretching film, carries out 3.2 times of stretchings subsequently into regions of lateral stretch, being utilized during cross directional stretch should
Solidification is dried in the hot wind of process, and most afterwards through 220 DEG C of thermal finalization 6 seconds, it is 12 seconds cooling and then to carry out relaxation at 120 DEG C, system
Obtain the diffusion barrier of embodiment 4, wherein the composition of resist blocking and that coating fluid is shown in Table 2.
Embodiment 5 to 12
Production method is same as Example 1, wherein the diffusion masterbatch containing PMMA particles is sliced with pure PET according in table 2
Proportioning mixed, the composition of resist blocking and that coating fluid is shown in Table 2.
Comparative example 1 to 2
Production method is same as Example 1, wherein the diffusion masterbatch containing PMMA particles is sliced with pure PET according in table 2
Proportioning mixed, the composition of resist blocking and that coating fluid is shown in Table 2.
It can be according to ASTMD1003 standard gauges to the light transmittance, mist degree and resistance to blocking of embodiment 1 to 12 and comparative example 1 to 2
Fixed method is detected, and testing result is shown in Table 2.
Table 1
Table 2
Resistance to blocking can grade by the following method：
●：It is easily peelable, and non-overlapping remaining trace；○：It is easily peelable, there is remaining trace；△ is not easily stripped.Wherein ●
For qualification, zero and △ is unqualified.
Work as using grain size in 50~100nm it can be seen from the data comparison of embodiment 1 to 9 in table 2 and comparative example 1 and 2
Between silicon dioxide granule as resist blocking and that particle when, light transmittance has clear improvement, and illustrates the diffusion barrier energy using the application
Enough improve the briliancy of device, and resistance to blocking can also preferably.In addition, by the control to manufacturing conditions, a certain range thickness is obtained
The diffusion layer of degree can also improve the light transmittance and mist degree of diffusion barrier to a certain extent.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
The application uses grain size for nano level resist blocking and that particle, and by its size controlling between 50~100nm, unexpected
Ground finds that the resist blocking and that particle enables diffusion barrier under the premise of keeping ideal resistance to blocking, while making resist blocking and that particle pair
The influence of light is substantially reduced, and then effectively increases the light transmittance of the diffusion barrier of the application, and the optics device with the diffusion barrier
The briliancy of part.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (17)
1. a kind of diffusion barrier, which is characterized in that including：
Substrate layer（10）, there is opposite first surface and second surface；
Two layers of diffusion layer（20）, it is separately positioned on the first surface and the second surface；
It is provided with resist blocking and that layer at least one layer of diffusion layer in two layers of diffusion layer（30）, the resist blocking and that layer（30）Setting
In the diffusion layer far from the substrate layer（10）Surface on, and the resist blocking and that layer（30）In resist blocking and that particle grain
Diameter is between 50~100nm.
2. diffusion barrier according to claim 1, which is characterized in that the resist blocking and that particle is silicon dioxide granule, Ya Ke
It is one or more in power particle and alundum (Al2O3).
3. diffusion barrier according to claim 2, which is characterized in that form the resist blocking and that layer（30）Resist blocking and that coating fluid
Include with weight percent gauge：
10 ~ 15% water-base resins, the water-base resin are water-based acrylic resin or waterborne polyurethane resin；
0.1 ~ 0.2% resist blocking and that particle；And
The water of surplus.
4. diffusion barrier according to claim 3, which is characterized in that the resist blocking and that coating fluid further includes 0.02 ~ 0.08% profit
Humectant.
5. diffusion barrier according to claim 3 or 4, which is characterized in that the resist blocking and that coating fluid further includes 0.05 ~
0.15% amine neutralizer.
6. diffusion barrier according to claim 5, which is characterized in that the amine neutralizer is 2- amino-2-methyls -1- third
Alcohol, ammonium hydroxide and/or diethanol amine.
7. diffusion barrier according to claim 2 or 3, which is characterized in that two layers of resist blocking and that layer（30）Thickness it is identical
Or it is different, and between 50 ~ 100nm.
8. diffusion barrier according to claim 7, which is characterized in that the volume of the resist blocking and that particle accounts for the resist blocking and that layer
Dry film volume 2 ~ 5%.
9. diffusion barrier according to claim 1, which is characterized in that the diffusion masterbatch for forming the diffusion layer include matrix and
Scattering particles, the diffusion masterbatch contain the scattering particles that weight content is 10 ~ 20%, and the grain size of the scattering particles is
0.8~5μm。
10. diffusion barrier according to claim 9, which is characterized in that the scattering particles is that refractive index is 1.4 ~ 1.75
Scattering particles.
11. diffusion barrier according to claim 9, which is characterized in that the scattering particles is polymethyl methacrylate grain
It is one or more in son, polystyrene particle, polyester granules and makrolon particle.
12. diffusion barrier according to claim 9, which is characterized in that described matrix is polyethylene terephthalate, gathers
It is one or more in mutual-phenenyl two acid bromide two alcohol ester and polyethylene naphthalate.
13. diffusion barrier according to claim 1, which is characterized in that the thickness of two layers of diffusion layer it is identical or different and
Between 3 ~ 6 μm.
14. diffusion barrier according to claim 1, which is characterized in that the substrate layer（10）For pet layer.
15. the production method of the diffusion barrier described in any one of claim 1 to 14, which is characterized in that the production method packet
It includes：
Step S1 forms the sheet of substrate layer and two layers of diffusion layer with the diffusion barrier using co-extrusion platen press；
The sheet is carried out first time stretching, obtains stretching film by step S2；
Step S3 is coated with the resist blocking and that for the resist blocking and that layer for forming the diffusion barrier at least one side of the stretching film
Coating fluid obtains wet coating diaphragm；And
The wet coating diaphragm is carried out second and stretched, and solidification is dried in second of drawing process by step S4
Obtain the diffusion barrier.
16. manufacturing method according to claim 15, which is characterized in that the step S2 includes：
After the sheet is preheated 5~15 seconds at 70~135 DEG C, hot sheet is obtained；
So that the hot sheet is heated into 135~155 DEG C of farinfrared, and longitudinal direction is carried out with 3.0~3.5 stretching ratio
It stretches, carries out the cooling that relaxes after 2 ~ 3s under conditions of 20~30 DEG C, obtain the stretching film.
17. manufacturing method according to claim 15, which is characterized in that the step S4 includes：
The wet coating diaphragm is carried out after stretching horizontally with 3.5 ~ 4 stretching ratio successively by sizing 5 ~ 8 at 210 ~ 230 DEG C
Second, relaxation 10~15 seconds at 45~160 DEG C, obtain the diffusion barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651996.1A CN106125172B (en) | 2016-08-10 | 2016-08-10 | A kind of diffusion barrier and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651996.1A CN106125172B (en) | 2016-08-10 | 2016-08-10 | A kind of diffusion barrier and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106125172A CN106125172A (en) | 2016-11-16 |
| CN106125172B true CN106125172B (en) | 2018-09-21 |
Family
ID=57257434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610651996.1A Active CN106125172B (en) | 2016-08-10 | 2016-08-10 | A kind of diffusion barrier and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106125172B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108202518A (en) * | 2016-12-20 | 2018-06-26 | 新科光电材料股份有限公司 | Sputter polyester laminate and its manufacturing method |
| CN107239168B (en) * | 2017-06-06 | 2020-07-28 | 浙江捷博智能科技有限公司 | Assembly process of touch panel of electronic coded lock |
| CN107132600B (en) * | 2017-06-27 | 2019-10-18 | 宁波长阳科技股份有限公司 | A kind of extrusion type diffusion barrier and preparation method thereof |
| CN108790338A (en) * | 2018-05-23 | 2018-11-13 | 营口康辉石化有限公司 | Polyester film and preparation method thereof |
| CN112689554B (en) * | 2018-09-14 | 2023-05-16 | Ａｇｃ株式会社 | Process for producing pellet, and ion exchange membrane |
| CN111993737A (en) * | 2019-05-27 | 2020-11-27 | 宁波长阳科技股份有限公司 | High-transmittance high-fog optical pre-coating film and preparation method thereof |
| CN110181922A (en) * | 2019-06-12 | 2019-08-30 | 浙江强盟实业股份有限公司 | A kind of high high fog diffusion barrier and preparation method thereof thoroughly of one-pass molding |
| CN111443403B (en) * | 2020-04-06 | 2023-10-10 | 杭州和顺科技股份有限公司 | Diffusion type dual-band absorption filter film |
| CN113504591B (en) * | 2021-07-08 | 2023-03-21 | 江西盛汇光学科技协同创新有限公司 | Diffusion brightening composite optical membrane and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN103345012A (en) * | 2013-07-31 | 2013-10-09 | 宁波激智科技股份有限公司 | Brightening diffusion film and preparation method thereof |
| CN103529501A (en) * | 2013-10-10 | 2014-01-22 | 宁波东旭成新材料科技有限公司 | Two-way stretching light diffusion film and preparation method thereof |
| CN103969723A (en) * | 2014-04-30 | 2014-08-06 | 宁波东旭成新材料科技有限公司 | Efficient diffuse reflection film and preparing method thereof |
| CN105589117A (en) * | 2015-12-21 | 2016-05-18 | 佛山佛塑科技集团股份有限公司 | Optical diffusion barrier with covering power and light transmittance compatibility and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8974066B2 (en) * | 2013-03-14 | 2015-03-10 | Intermolecular, Inc. | Optical coatings with plate-shaped particles and methods for forming the same |
-
2016
- 2016-08-10 CN CN201610651996.1A patent/CN106125172B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540289A (en) * | 2011-12-31 | 2012-07-04 | 宁波长阳科技有限公司 | Optical diffusion film and preparation method thereof |
| CN103345012A (en) * | 2013-07-31 | 2013-10-09 | 宁波激智科技股份有限公司 | Brightening diffusion film and preparation method thereof |
| CN103529501A (en) * | 2013-10-10 | 2014-01-22 | 宁波东旭成新材料科技有限公司 | Two-way stretching light diffusion film and preparation method thereof |
| CN103969723A (en) * | 2014-04-30 | 2014-08-06 | 宁波东旭成新材料科技有限公司 | Efficient diffuse reflection film and preparing method thereof |
| CN105589117A (en) * | 2015-12-21 | 2016-05-18 | 佛山佛塑科技集团股份有限公司 | Optical diffusion barrier with covering power and light transmittance compatibility and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106125172A (en) | 2016-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106125172B (en) | A kind of diffusion barrier and preparation method thereof | |
| CN105378519B (en) | The manufacturing method of optical film, polarizing film, image display device and optical film | |
| TWI607074B (en) | Photocurable adhesive composition, polarizing adhesive and manufacturing method therefor, optical member and liquid crystal display device | |
| CN101389983B (en) | Reinforced reflective polarizer films | |
| CN103497691B (en) | Photo-cured adhesive composition, polarizing plate and producing method for the same, optical member and liquid crystal display device | |
| KR101806875B1 (en) | Photocurable adhesive composition, polarizing plate and a process of producing the same, optical member, and liquid crystal display device | |
| JP2015040283A (en) | Photocurable adhesive composition, polarizing plate and method for manufacturing the same, optical member, and liquid crystal display device | |
| WO2014166225A1 (en) | Composite optical reflective film and preparation method therefor | |
| KR102431158B1 (en) | Optical film and manufacturing method thereof, polarizing plate, and image display device | |
| KR101627904B1 (en) | Method for preparing Polarizer having Protection films in two sides and Polarizer having Protection films in two sides therefrom | |
| CN105729962B (en) | The manufacture method of polarizing coating, polarizer and polarizing coating | |
| WO2015159645A1 (en) | Polarizing plate and liquid crystal display device | |
| CN108957893B (en) | Peep-proof membrane and preparation method thereof | |
| CN105765426B (en) | Optical thin film and its manufacturing method | |
| CN103692748A (en) | Optical polyester thin film | |
| CN103796824B (en) | Texture film and manufacture method | |
| CN104893525B (en) | A kind of coating fluid and hardening polyester film | |
| JP7405165B2 (en) | Manufacturing method of liquid crystal panel, polarizing plate and liquid crystal display device | |
| JPH03101907A (en) | Manufacture of lens sheet | |
| JP4985039B2 (en) | Transfer film and method for producing near-infrared absorbing film | |
| JP2005059276A (en) | Mold release film | |
| TWI510588B (en) | Method of manufacturing double-sided polarizing plate and double-sided polarizing plate manufactured using the same | |
| JP6654371B2 (en) | Method for producing roll-shaped acrylic resin film and method for producing polarizing plate | |
| CN110959126B (en) | Polarizing plate | |
| JP6954502B1 (en) | Laminate for thin film layer transfer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190121 Granted publication date: 20180921 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220121 Granted publication date: 20180921 |
|
| PD01 | Discharge of preservation of patent |