CN109814185A - A kind of micro- composite membrane of large scale and preparation method thereof - Google Patents
A kind of micro- composite membrane of large scale and preparation method thereof Download PDFInfo
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- 239000012528 membrane Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 68
- 239000012790 adhesive layer Substances 0.000 claims abstract description 30
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 22
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 22
- 239000010410 layer Substances 0.000 claims abstract description 21
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000000853 adhesive Substances 0.000 claims description 17
- 239000003292 glue Substances 0.000 claims description 4
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 238000003475 lamination Methods 0.000 claims description 3
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- ZDHCZVWCTKTBRY-UHFFFAOYSA-N omega-Hydroxydodecanoic acid Natural products OCCCCCCCCCCCC(O)=O ZDHCZVWCTKTBRY-UHFFFAOYSA-N 0.000 claims description 2
- QNODIIQQMGDSEF-UHFFFAOYSA-N (1-hydroxycyclohexyl)-phenylmethanone Chemical compound C=1C=CC=CC=1C(=O)C1(O)CCCCC1 QNODIIQQMGDSEF-UHFFFAOYSA-N 0.000 claims 1
- 230000001965 increasing effect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000003595 mist Substances 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 3
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- 208000002173 dizziness Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
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- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 208000012886 Vertigo Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- KUDUQBURMYMBIJ-UHFFFAOYSA-N ethylene glycol diacrylate Substances C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
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Abstract
The invention proposes a kind of micro- composite membranes of large scale, including the first PET base material, the second PET base material and UV adhesive layer；Wherein, the lower surface of the first PET base material is evenly arranged with one layer of PMMA microballon；The upper surface of second PET base material is evenly arranged with 70-90 μm of diameter of the hemispherical micro- structure to differ in size；First PET base material with a thickness of 180-190 μm, the second PET base material with a thickness of 240-260 μm, UV adhesive layer with a thickness of 3-8 μm.The present invention also provides the preparation methods of the composite membrane.The composite membrane of the application obtains the raising of rigidity with biggish base material thickness, it can be solidified simultaneously by ultraviolet light twice and obtain the smallest UV adhesive layer thickness, improve the light transmission of composite membrane, and the refractive index of light is improved by way of the radius increasing micro- structure, the mist degree of composite membrane is also further improved by the PMMA microballon that light twice scatters.
Description
Technical field
The present invention relates to a kind of optical diaphragms that can be used for optics display field, more particularly to one kind to be used for such as liquid crystal
Show the micro- composite membrane of large scale and preparation method thereof with larger display area of device, lighting system etc.
Background technique
Optics is shown, lighting area is frequently necessary to use various compound film sheets.Such as liquid crystal display, television set etc.,
The size for the compound film sheet used becomes increasing.Existing large-sized composite membrane show, illuminate etc. fields for optics
Piece is brightness irregularities there are most important problem, and this aspect is related to position with type, the shape of light source, on the other hand
There is very big relevance in the quality with compound film sheet.Good compound film sheet can effective scattering light, can be to the lamp of light source
Shadow carries out some maskings, thus can generally reduce the requirement to display brightness, saves energy consumption, can also reduce bright light
Injury of the line to eyes avoids user excessively using generation dizziness.
Chinese patent application CN 201720838343.4 discloses a kind of micro- complex optics that add lustre to for backlight module
Film, including micro- permeable membrane, prism film and laminating layer.Micro- permeable membrane and prism film are combined into one by laminating layer by the prior art
It is whole, micro- complex optical film that adds lustre to absolute construction is formed, can satisfy the product ultrathin market demand, greatly
It is big to be lower than traditional diaphragm thickness, and good in optical property, packaging efficiency are high, at low cost.In addition, the application the prior art is compound
Film can also be used in the optics luminance for enhancing micro- complex optical film that adds lustre to.
The composite membrane of the above-mentioned prior art traditional diaphragm since thickness is lower than, thus there are certain advantages for translucency, but
It is when it is used for large-sized optics display field, to be used in rigidity deficiency since diaphragm thickness is too thin and be easy to send out
Raw warpage, causes display area the generation of the case where ripple and brightness irregularities occur.In addition, due to the composite membrane of the prior art
Piece is combined by micro- permeable membrane and prism film, can be deposited along prism striped and perpendicular to the brightness of prism stripe direction
In some differences, in use, due to visual angle relative level, not on the display (such as laptop screen) of small size
It will cause too big problem.However, showing that the brightness disproportionation of different angle is to be difficult to in lighting system in large-sized optics
Allow it is customer satisfaction system, moreover two different diaphragms are compound, cost is also relatively high, shows and illuminate neck in large scale optics
Domain, it is difficult to which large-scale promotion uses.
Summary of the invention
The technical problem to be solved in the present invention is to provide micro- composite membrane of a kind of large scale and preparation method thereof, to reduce or
It avoids the problem that being formerly mentioned.
In order to solve the above technical problems, the invention proposes a kind of micro- composite membrane of large scale, including the first PET base material,
The two lamination adhesive is integrated by the second PET base material and being uniformly applied between first PET base material and the second PET base material
UV adhesive layer；Wherein, the lower surface of first PET base material is evenly arranged with one layer of PMMA microballon；Second PET base material
Upper surface be evenly arranged with 70-90 μm of diameter of the hemispherical micro- structure to differ in size；The thickness of first PET base material
Degree be 180-190 μm, second PET base material with a thickness of 240-260 μm, the UV adhesive layer with a thickness of 3-8 μm.
Preferably, the PMMA microballon for accounting for the 0.3-0.5% of gross mass is evenly distributed in the UV adhesive layer.
In addition, including the following steps: offer one the present invention also provides a kind of preparation method of the micro- composite membrane of large scale
Layer is uniformly bonded one layer of PMMA microballon in its lower surface with a thickness of 180-190 μm of the first PET base material；By UV adhesive and
The mixed liquor of PMMA microballon is uniformly coated on the upper surface of first PET base material, is reduced by ultraviolet light 1-3 seconds mixed
Close the mobility of liquid；Covering a layer thickness in the upper surface for first PET base material for being coated with the mixed liquor is 240-260
μm the second PET base material, by being formed by curing the mixed liquor within ultraviolet light 4-6 seconds with a thickness of 3-8 μm of UV glue
Glutinous layer, and first PET base material and the second PET base material are bonded together by the UV adhesive layer；In the 2nd PET
The upper surface of substrate forms 70-90 μm of diameter of the hemispherical micro- structure to differ in size.
The composite membrane of the application obtains the raising of rigidity with biggish base material thickness, while can pass through ultraviolet light twice
Solidification obtains the smallest UV adhesive layer thickness, improves the light transmission of composite membrane, and pass through the radius of the micro- structure of increase
Mode improves the refractive index of light, and the mist degree of composite membrane is also further improved by the PMMA microballon that light twice scatters.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein,
The structural schematic diagram of the micro- composite membrane of large scale of a specific embodiment according to the present invention is shown in Fig. 1；
The preparation step schematic diagram of the micro- composite membrane of large scale shown in Fig. 1 is shown in Fig. 2.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment.Wherein, identical component uses identical label.
The problems of compound film sheet based on the prior art, it is micro- compound that the present invention provides a kind of large scales
Film, structure is as shown in Figure 1, be shown which the micro- composite membrane of large scale of a specific embodiment according to the present invention
Structural schematic diagram.
Referring to Fig. 1, the micro- composite membrane of the large scale of the application, including the first PET base material 100, the second PET base material 200 with
And be uniformly applied to the UV adhesive layer for the two lamination adhesive being integrated between the first PET base material 100 and the second PET base material 200
300.Specifically, as shown, the lower surface of the first PET base material 100 is evenly arranged with one layer of PMMA microballon 11；2nd PET base
The upper surface of material 200 is evenly arranged with 70-90 μm of diameter of the hemispherical micro- structure 21 to differ in size；First PET base material
100 with a thickness of 180-190 μm, the second PET base material 200 with a thickness of 240-260 μm, UV adhesive layer 300 with a thickness of 3-8 μ
m。
Wherein, PMMA microballon is the transparent particle of blast made of PMMA (polymethyl methacrylate), scattering, particle
Diameter 0.5-1um is well-known technique, and commercially available purchase obtains.
The micro- composite membrane of the large scale of the application is inadequate for the compound film sheet rigidity for solving the problems, such as the prior art, uses
The first PET base material 100 and the second PET base material 200 that compound sticking is integrated, wherein the thickness of the first PET base material 100 is preferred
It is 188 μm, the thickness of the second PET base material 200 is preferably 250 μm, and the thickness of this two layers of PET base material is relatively large, relatively existing
Technology may insure to obtain biggish rigidity.Certainly, with the increase of thickness, the translucency of compound film sheet opposite can weaken, because
And the application further uses the brightness that various schemes increase compound film sheet.
Firstly, the application is by the thickness control of intermediate UV adhesive layer 300 in the smallest range, preferably UV adhesive layer
300 with a thickness of 5 μm.Since the translucency of UV adhesive is relatively poor with respect to for PET base material, thus the UV glue that thickness is too big
Glutinous layer will be greatly reduced the integral light-transmitting of compound film sheet, thus the application uses the special cured mode of ultraviolet light twice
(will be explained further below) greatly reduces the thickness of UV adhesive layer 300.For example, the UV adhesive layer of the prior art
Thickness, which usually requires to reach 30 μm or more, could obtain good adhesive property, this is because the leaching of UV adhesive and PET material
Lubricant nature is bad, and the surface tension of UV adhesive is larger, it is difficult to form uniform coating knot long-term and stably on PET material surface
Structure, thus can only be coated by way of increasing coating layer thickness with adhesives more as far as possible, to by non-uniform place
It fills up as far as possible, to the tension contraction of coating surface can be kept to be unlikely to gap occur with the long period in operation.This
The thickness of sample one, the UV adhesive layer of the prior art can largely effect on the light transmission of compound film sheet.
The application is excessive for the thickness for overcoming the problems, such as UV adhesive layer, after coating UV adhesive, carries out first
Precuring operation, i.e., by the mobility of ultraviolet light 1-3 seconds (preferably 2 seconds) reduction UV adhesive, thus
Do not have to worry that the problem of gap occurs in coating surface contraction during subsequent operation, so as to utilize minimal amount of UV adhesive
Uniform adhesive coating is formed for a long time.Later, after by the first PET base material 100 and the overlapping of the second PET base material 200, pass through
Coating was thoroughly solidified in ultraviolet light 4-6 seconds (preferably 5 seconds), the UV glue that may finally be 3-8 μm by minimum thickness
Glutinous layer 300 bonds together the first PET base material 100 and the second PET base material 200.
That is, the present invention greatly reduces UV gluing by the cured mode of ultraviolet light twice compared with the prior art
The thickness of layer, avoids the excessive translucency to compound film sheet of UV adhesive layer thickness and adversely affects, improve composite membrane
The translucency of piece.
Secondly, the present invention is by the second PET base material as the increase of PET base material thickness and the thickness of UV adhesive layer reduce
The radius of micro- structure 21 of 200 upper surface is adjusted, its radius has been increased to 70-90 μm of degree, background skill
The radius of the micro- structure for the prior art that art part refers to only has 12-20 μm, it can be seen that 21 phase of micro- structure of the invention
Refractive index to light is substantially increased to the prior art, to improve the brightness of compound film sheet by bigger refractive index, is used
The problem of to make up the brightness deterioration as caused by the increase of compound film sheet thickness.
Furthermore since the radius of micro- structure 21 increases, it will lead to the center position of each hemisphere of micro- structure 21
Light luminance be more than brightness between adjacent hemisphere at position, become larger since the radius of hemisphere is opposite, this brightness irregularities
The phenomenon that also can seem therewith more obvious, although the hemisphere to differ in size in micro- structure 21 can alleviate some brightness
Non-uniform problem, but since the radius of semiglobe is too big, it is difficult to thoroughly solve the problems, such as non-uniform and excessive folding
Penetrating rate also causes the lamp shadow to light source to focus excessive problem.In order to overcome the problems, such as brightness irregularities after blast, in the application
Another specific embodiment in, the PMMA microballon for accounting for the 0.3-0.5% of gross mass is evenly distributed in UV adhesive layer 300,
The scattering to light is provided to the interlayer position in two PET base materials, so that the light source image reflected by micro- structure 21
As far as possible far from the light projection surface side of the first PET base material 100, the screening effect to the lamp shadow of light source is played, it is possible to reduce
Injury of the bright light to user's eyes is crossed, avoids user excessively using generation dizziness.
Finally, reducing the requirement to display brightness, the present invention is in the first PET to further increase the scattering to light
The lower surface of substrate 100 has been uniformly arranged PMMA microballon 11, dissipates to carry out second to emergent ray by PMMA microballon 11
It penetrates, the first time of interlayer position is cooperated to scatter, the lamp shadow of light source can thoroughly be covered up, further reduced brightness concentration
The spinning sensation of generation improves the mist degree of compound film sheet.And the scratch resistance for additionally improving compound film sheet of outer surface setting
Performance, and can be reduced electrostatic, be conducive to the efficiency for improving the subsequent assembly operation of diaphragm.
In one particular embodiment of the present invention, the UV adhesive in the UV adhesive layer can be existing compound film sheet
The UV adhesive containing acrylic resin usually used can also be preferably the UV adhesive that following mass percent is constituted,
Its component specifically: and acrylic resin (such as: SUO-5101): 75-80%, monomer HDDA (1.6- ethylene glycol diacrylate
Ester): 10-15%, photoinitiator (1- hydroxycyclohexyl phenyl ketone): 5-10%, auxiliary agent B YK (levelling agent, BYK company, model
306): 2-3%.
Referring to the preparation method of the micro- composite membrane of Fig. 2 large scale that the present invention will be described in detail, wherein what Fig. 2 was shown
It is the preparation step schematic diagram of the micro- composite membrane of large scale of the invention.
As shown in Fig. 2, the first PET base material 100 that a layer thickness is 180-190 μm is provided first, it is uniform in its lower surface
It is bonded one layer of PMMA microballon 11.
Then, using micro- gravure roller coating technology, the mixed liquor of UV adhesive and PMMA microballon is uniformly coated on the first PET
The upper surface of substrate 100 reduced the mobility of mixed liquor by ultraviolet light 1-3 seconds.
Later, by micro- gravure roller coating technology, one is covered in the upper surface for the first PET base material 100 for being coated with mixed liquor
Layer made mixed liquor be formed by curing thickness with a thickness of 240-260 μm of the second PET base material 200 by ultraviolet light 4-6 seconds
For 3-8 μm of UV adhesive layer 300, and first PET base material 100 and the second PET base material 200 are bonded in by UV adhesive layer 300
Together.
Finally, forming 70-90 μm of diameter of size in the upper surface of second PET base material 200 using micro-molding technology
Not equal hemispherical micro- structure 21.
The Specifeca tion speeification such as following table of the micro- composite membrane of above-mentioned preparation method large scale obtained through the invention
It is shown:
In conclusion the composite membrane of the application obtains the raising of rigidity with biggish base material thickness, while can pass through
Ultraviolet light solidification twice obtains the smallest UV adhesive layer thickness, improves the light transmission of composite membrane, and by increasing micro- knot
The mode of the radius of structure improves the refractive index of light, also further improves composite membrane by the PMMA microballon that light twice scatters
Mist degree.
It will be appreciated by those skilled in the art that although the present invention is described in the way of multiple embodiments,
It is that not each embodiment only contains an independent technical solution.So narration is used for the purpose of for the sake of understanding in specification,
The skilled in the art should refer to the specification as a whole is understood, and by technical solution involved in each embodiment
Regard as and can be combined with each other into the modes of different embodiments to understand protection scope of the present invention.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent variations, modification and combination under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (5)
1. a kind of micro- composite membrane of large scale, including the first PET base material (100), the second PET base material (200) and uniform smearing
The UV adhesive layer for being integrated the two lamination adhesive between first PET base material (100) and the second PET base material (200)
(300)；It is characterized in that, the lower surface of first PET base material (100) is evenly arranged with one layer of PMMA microballon (11)；It is described
The upper surface of second PET base material (200) is evenly arranged with 70-90 μm of diameter of the hemispherical micro- structure to differ in size
(21)；First PET base material (100) with a thickness of 180-190 μm, second PET base material (200) with a thickness of 240-
260 μm, the UV adhesive layer (300) with a thickness of 3-8 μm.
2. the micro- composite membrane of large scale as described in claim 1, which is characterized in that uniformly divide in the UV adhesive layer (300)
It is furnished with the PMMA microballon for accounting for the 0.3-0.5% of gross mass.
3. the micro- composite membrane of large scale as claimed in claim 1 or 2, which is characterized in that the UV gluing in the UV adhesive layer
The mass percent of agent is constituted are as follows: acrylic resin SUO-5101:75-80%, monomer HDDA:10-15%, photoinitiator 184:
5-10%, auxiliary agent B YK:2-3%.
4. a kind of preparation method of the micro- composite membrane of large scale, includes the following steps:
The first PET base material (100) that a layer thickness is 180-190 μm is provided, is uniformly bonded one layer of PMMA microballon in its lower surface
(11)；
The mixed liquor of UV adhesive and PMMA microballon is uniformly coated on to the upper surface of first PET base material (100), passes through purple
Outer light irradiates the 1-3 seconds mobility for reducing mixed liquor；
Covering a layer thickness in the upper surface for first PET base material (100) for being coated with the mixed liquor is 240-260 μm
Second PET base material (200), by being formed by curing the mixed liquor in ultraviolet light 4-6 seconds with a thickness of 3-8 μm of UV glue
Glutinous layer (300), and be bonded first PET base material (100) and the second PET base material (200) by the UV adhesive layer (300)
Together；
70-90 μm of diameter of the hemispherical micro- structure to differ in size is formed in the upper surface of second PET base material (200)
(21)。
5. preparation method as claimed in claim 4, which is characterized in that the PMMA microballon in the UV adhesive layer (300) accounts for institute
State the 0.3-0.5% of the gross mass of UV adhesive layer (300).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111061089A (en) * | 2019-12-13 | 2020-04-24 | 武汉华星光电技术有限公司 | Display device |
| CN111319217A (en) * | 2020-03-13 | 2020-06-23 | 铜陵乐知科技服务有限公司 | Preparation process of novel environment-friendly high-transparency hot-melt composite film |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111061089A (en) * | 2019-12-13 | 2020-04-24 | 武汉华星光电技术有限公司 | Display device |
| CN111061089B (en) * | 2019-12-13 | 2021-04-27 | 武汉华星光电技术有限公司 | Display device |
| CN111319217A (en) * | 2020-03-13 | 2020-06-23 | 铜陵乐知科技服务有限公司 | Preparation process of novel environment-friendly high-transparency hot-melt composite film |
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Application publication date: 20190528 |