CN103675965A - Micro-foaming polyester reflecting film - Google Patents
Micro-foaming polyester reflecting film Download PDFInfo
- Publication number
- CN103675965A CN103675965A CN201310703813.2A CN201310703813A CN103675965A CN 103675965 A CN103675965 A CN 103675965A CN 201310703813 A CN201310703813 A CN 201310703813A CN 103675965 A CN103675965 A CN 103675965A
- Authority
- CN
- China
- Prior art keywords
- micro
- foaming layer
- particle
- reflectance coating
- layer
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a micro-foaming polyester reflecting film which comprises a foaming layer and resin layers compounded on the upper surface and the lower surface of the foaming layer. The thickness of the foaming layer is 40-270 micrometers, and the thicknesses of the resin layers are 10-80 micrometers. Spherical particles, inorganic particles and micro-foams are evenly distributed in the foaming layer, and the spherical particles are located in the micro-foams. According to the micro-foaming polyester reflecting film, the high reflectivity, the high shading performance and the high film forming stability are both achieved, the irradiating luminance of a liquid crystal screen can be improved, a liquid crystal image can be bright and easy to see, the light reflectivity can be higher than 99%, and the light transmittance can be lower than 3%.
Description
Technical field
The present invention relates to a kind of micro-expanded polyester reflectance coating.
Background technology
In recent years, liquid crystal display is as the display unit of the IT associated apparatus such as computing machine, televisor, automobile, communicator, and its application expands hastily.These displays are owing to himself not being luminophor, thereby therefore can show by the irradiation light of its backlight, backlight brightness meeting directly have influence on the brightness of liquid crystal display.
The main blooming piece of backlight has diffusion barrier, brightness enhancement film and reflectance coating, and the Main Function of reflectance coating is to expose light high-level efficiency and lossless the reflection of light guide plate bottom, thereby reduces light loss, reduces power consumption, improves the light saturation degree of LCD.
There is the problems such as reflectivity is low, light loss is large in existing reflectance coating.
Summary of the invention
The object of this invention is to provide a kind of micro-expanded polyester reflectance coating.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
A micro-expanded polyester reflectance coating, comprises foaming layer and is compounded in the resin bed of foaming layer upper and lower surface, depth of foam is 40-270 μ m, resin layer thickness 10-80 μ m; In foaming layer, be evenly distributed with spheroidal particle, inorganic particulate and microvesicle; Spheroidal particle is positioned at microvesicle.
Applicant finds after deliberation: above-mentioned reflectance coating, during preparation, take spheroidal particle as core has produced micro-cavity in drawing process, and utilize inorganic particulate and empty interface significantly to reduce printing opacity, improved reflection of light rate and covering property.In B layer, contain a large amount of inorganic particulates simultaneously, between inorganic particulate and polyester, be formed with interface, more interface makes light reflectivity have larger raising.
The diameter of spheroidal particle is 0.3-5 μ m, is preferably 0.5-2 μ m; In foaming layer, microvesicle volume is the 10-50% of foaming layer volume, is preferably 20-35%; The particle diameter of inorganic particulate is 0.2-7 μ m, is preferably 0.4-0.8 μ m; The density of foaming layer is 0.6g/cm
3-1.2g/cm
3.
The control of the selection of the selection of the selection of above-mentioned spheroidal particle diameter, microvesicle volume, inorganic particulate particle diameter and foaming layer density, reflectivity and the disguise of transmitting film have not only been improved, and when preparation stretches, there will not be rupture of membranes phenomenon, throughput rate is high, has taken into account high reflectance, highly concealed type and high film forming stability.
It is the flexible diffusion particle layer of 5-15 μ m that the one side not contacting with foaming layer on resin bed is provided with thick; The apparent density of micro-expanded polyester reflectance coating is 0.7-1.3g/cm
3, be preferably 0.9-1.2g/cm
3.
Adopt technique scheme to can further improve the reflectivity of reflectance coating.
The one side contacting with foaming layer on resin bed is evenly provided with organic or inorganic particulate layer, and the quality of organic or inorganic particulate layer is the 0.3-20% of resin bed quality.Can further improve like this reflection efficiency of reflectance coating, can guarantee film forming stability simultaneously.
Spheroidal particle is cross-linked polymer spheroidal particle.This can further improve the reflection efficiency of reflectance coating.
Cross-linked polymer spheroidal particle is the potpourri of one or more any proportionings in crosslink propylene acids, cross-linked styrene class or silicone based particle.Can further improve reflection efficiency, the disguise of reflectance coating like this, guarantee high production efficiency simultaneously.
Spheroidal particle is that cross-linked polymer spheroidal particle and glass transition temperature are greater than the non-polar polymer mass particle of 110 ℃ than the potpourri for (5:10)-(8:5).Glass transition temperature is greater than the non-polar polymer particle of 110 ℃ and is preferably polyisoprene or cyclic olefine copolymer.Can further improve reflection efficiency and the disguise of reflectance coating like this.
The feed composition of described foaming layer comprises: polyethylene terephthalate 40-85 part, non-polar polymer particle 3-25 part that cross-linked polymer spheroidal particle and/or glass transition temperature are greater than 110 ℃, block copolymer resin 2-15 part of polyester and poly-dihydric alcohol, inorganic particulate 5-30 part, described umber is mass fraction; Polyethylene terephthalate viscosity is 0.65-0.85; In the block copolymer resin of polyester and poly-dihydric alcohol, the degree of polymerization of poly-dihydric alcohol is 10-100, and the content of poly-dihydric alcohol in block copolymer resin is 1-10%, is preferably 5-8%.Above-mentioned by adding inorganic particulate and cross-linked polymer spheroidal particle to prepare in polyester, at drawing process and polyester generation interfacial separation, produce, this interfacial separation can produce tiny gap, the uniformity that can make the adding of the block copolymer resin of polyester and poly-dihydric alcohol space produce.
Above-mentioned inorganic particulate is the potpourri of titania, barium sulphate, zinc paste or calcium carbonate two or more any proportionings wherein.
Micro-expanded polyester reflectance coating of the present invention resin bed adjacent with foaming layer can be light face or cloudy surface.
In polyester reflectance coating of the present invention, its percent thermal shrinkage preferred length direction, Width 30 minutes time at 80 ℃ is all below 0.5%, more preferably 0.0-0.4%.When percent thermal shrinkage surpasses 0.5%, the change in size of film increases, and the planarity of film worsens, and produces the phenomenon of brightness disproportionation.In addition, when percent thermal shrinkage is less than 0.0%, while that is to say heating, film is elongation, after packing backlight unit into, because illumination thermal conductance causes film, extends, and easily produces crooked, fluctuating.
The NM technology of the present invention is prior art.
A kind of micro-expanded polyester reflectance coating provided by the invention has been taken into account high reflectance, highly concealed type and high film forming stability, can make LCD screen irradiation brightness improve, and makes liquid crystal image distincter and easily see; Reflection of light rate can be greater than 99%, and the transmitance of light is less than 3%.
Accompanying drawing explanation
Fig. 1 is the micro-expanded polyester reflecting film structure of the present invention schematic diagram.
In figure, 1 is resin bed, and 2 is foaming layer, and 3 is spheroidal particle, and 4 is microvesicle, and 5 is inorganic particulate.
Embodiment
In order to understand better the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not only confined to the following examples.
Raw materials used as follows in embodiment:
A. vibrin (A)
San Fang lane limiting viscosity processed is 0.65CZ5011 (A1); Sinopec Yizheng Fiber Optical plant limiting viscosity processed is 0.75FG720 (A2).
B. crosslinked spherical particle (B)
Japan ponding chemistry acrylic acid crosslinked particle BMSA-18GN, particle diameter 0.8 μ m(B1); The Japan Zong Yan styrene crosslinked particle SX300 of chemical company, particle diameter 3 μ m(B2); Acrylic acid crosslinked particle MX500, particle diameter 5 μ m(B3).
C. non-polar resin (C)
The polymethylpentene DX820 processed of Mitsui Chemicals, Inc (Cl).
D. copolymer resins (D)
Sinopec Yizheng Fiber Optical plant limiting viscosity processed is 0.80BG80A (D1); Korea S LG chemistry ester TPEE1065D (D2).
E. inorganic particulate (E)
Mean grain size is the barium sulphate particle (E1) of O.7 μ m; Mean grain size is the calcium carbonate particle (E2) of 1.O μ m; Mean grain size is the TiO 2 particles (E3) of 0.3 μ m; Mean grain size is the silicon dioxide granule (E4) of 3.5 μ m.
F. photostabilizer (F)
Photostabilizer UV234 (F1).
By in advance at the temperature of 160 ℃ vacuum drying the vibrin (A1) of 5 hours, crosslinked spherical particle (B1), copolymer resins (D11) and inorganic particulate (E1) mix with weight rate 67:8:10:15 supplies with main stor(e)y extruder (B layer, foaming layer), simultaneously by advance at the temperature of 160 ℃ vacuum drying the vibrin (A1) of 5 hours and inorganic particulate (E1) ratio that is scaled 92:8 with weight supply with auxiliary layer extruder (A layer, resin bed), at the temperature of 280 ℃, melt extrude respectively, extruding front use cut-off footpath is that 20 μ m filtrators carry out foreign body filtering, then be directed in compound mouthful of mould of T-shaped die head, make its interflow and spue 3-tier architecture A/B/A structure, coextrusion is sheet, and by static charge method, this melting laminated sheet note is attached on the chill roll that surface temperature remains on 28 ℃, make its cooling curing, then, respectively stretch 3.3 times with Width along its length.Then carry out again thermal finalization processing, at 220 ℃ of temperature, implement the thermal treatment in 10 seconds, and further at 170 ℃ of temperature broad ways carry out 3% relaxation processes; Follow cooling after, obtain micro-foaming white polyester film.In addition, the thickness of micro-foaming white polyester film of gained is 188 μ m, and in foaming layer, microvesicle volume is 30% of foaming layer volume; The density of foaming layer is 0.9g/cm
3; The apparent density of micro-expanded polyester reflectance coating is 1.0g/cm
3, specific performance parameter is in Table 1.
Embodiment 2-5
Preparation technology is all with reference to embodiment 1, and the performance of material proportion and products obtained therefrom is in Table 1, and wherein, in foaming layer, microvesicle volume is 20% of foaming layer volume; The density of foaming layer is 0.7g/cm
3; The apparent density of micro-expanded polyester reflectance coating is 0.9g/cm
3.
Comparative example 1-3
Preparation technology is all with reference to embodiment 1, and the performance of material proportion and products obtained therefrom is in Table 1, and wherein, in foaming layer, microvesicle volume is 40% of foaming layer volume; The density of foaming layer is 1.2g/cm
3; The apparent density of micro-expanded polyester reflectance coating is 1.2g/cm
3.
Table 1
In above-mentioned table, ◎ is outstanding, and zero is good, and △ is general, * poor; B layer accounts for 80%, A layer and accounts for 20% finger: in the micro-foaming white polyester film of gained, the mass content of B layer is 80% of micro-foaming white polyester film quality, and the mass content of A layer is 20% of micro-foaming white polyester film quality.
Light reflectivity (%) adopts the Japanese Minolta CM-5 of company spectrophotometer to detect; The test of light transmission rate is with reference to GB/T2410-2008; The method of testing of film forming stability: during preparation, continuous 8 hours not rupture of membranes be that film forming is outstanding, continuous 8 hours ruptures of membranes are for 1-2 time that film forming is good, it is general that continuous 8 hours ruptures of membranes surpass 3-5 above film forming, over 5 times be that film forming is poor.
Claims (10)
1. a micro-expanded polyester reflectance coating, is characterized in that: comprise foaming layer and be compounded in the resin bed of foaming layer upper and lower surface, depth of foam is 40-270 μ m, resin layer thickness 10-80 μ m; In foaming layer, be evenly distributed with spheroidal particle, inorganic particulate and microvesicle; Spheroidal particle is positioned at microvesicle.
2. micro-expanded polyester reflectance coating as claimed in claim 1, is characterized in that: the diameter of spheroidal particle is 0.3-5 μ m; In foaming layer, microvesicle volume is the 10-50% of foaming layer volume; The particle diameter of inorganic particulate is 0.2-7 μ m; The density of foaming layer is 0.6g/cm
3-1.2g/cm
3.
3. micro-expanded polyester reflectance coating as claimed in claim 2, is characterized in that: the diameter of spheroidal particle is 0.5-2 μ m; In foaming layer, microvesicle volume is the 20-35% of foaming layer volume; The particle diameter of inorganic particulate is 0.4-0.8 μ m.
4. the micro-expanded polyester reflectance coating as described in claim 1-3 any one, is characterized in that: it is the flexible diffusion particle layer of 5-15 μ m that the one side not contacting with foaming layer on resin bed is provided with thick; The apparent density of micro-expanded polyester reflectance coating is 0.7-1.3g/cm
3.
5. the micro-expanded polyester reflectance coating as described in claim 1-3 any one, is characterized in that: the one side contacting with foaming layer on resin bed is evenly provided with organic or inorganic particulate layer, and the quality of organic or inorganic particulate layer is the 0.3-20% of resin bed quality.
6. the micro-expanded polyester reflectance coating as described in claim 1-3 any one, is characterized in that: spheroidal particle is cross-linked polymer spheroidal particle.
7. micro-expanded polyester reflectance coating as claimed in claim 6, is characterized in that: cross-linked polymer spheroidal particle is the potpourri of one or more any proportionings in crosslink propylene acids, cross-linked styrene class or silicone based particle.
8. the micro-expanded polyester reflectance coating as described in claim 1-3 any one, is characterized in that: spheroidal particle is that cross-linked polymer spheroidal particle and glass transition temperature are greater than the non-polar polymer mass particle of 110 ℃ than the potpourri for (5:10)-(8:5).
9. micro-expanded polyester reflectance coating as claimed in claim 8, is characterized in that: it is polyisoprene or cyclic olefine copolymer that glass transition temperature is greater than the non-polar polymer particle of 110 ℃.
10. the micro-expanded polyester reflectance coating as described in claim 1-3 any one, it is characterized in that: the feed composition of described foaming layer comprises: polyethylene terephthalate 40-85 part, non-polar polymer particle 3-25 part that cross-linked polymer spheroidal particle and/or glass transition temperature are greater than 110 ℃, block copolymer resin 2-15 part of polyester and poly-dihydric alcohol, inorganic particulate 5-30 part, described umber is mass fraction; Polyethylene terephthalate viscosity is 0.65-0.85; In the block copolymer resin of polyester and poly-dihydric alcohol, the degree of polymerization of poly-dihydric alcohol is 10-100, and the content of poly-dihydric alcohol in block copolymer resin is 1-10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703813.2A CN103675965B (en) | 2013-12-19 | 2013-12-19 | A kind of fretting map polyester reflective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310703813.2A CN103675965B (en) | 2013-12-19 | 2013-12-19 | A kind of fretting map polyester reflective film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103675965A true CN103675965A (en) | 2014-03-26 |
| CN103675965B CN103675965B (en) | 2015-08-26 |
Family
ID=50314082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310703813.2A Expired - Fee Related CN103675965B (en) | 2013-12-19 | 2013-12-19 | A kind of fretting map polyester reflective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103675965B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614792A (en) * | 2015-01-26 | 2015-05-13 | 宁波长阳科技有限公司 | Anti-scraping reflector plate and preparation method thereof |
| CN105911622A (en) * | 2016-06-27 | 2016-08-31 | 福建夜光达科技股份有限公司 | Reflection waste regeneration film and manufacturing method thereof |
| CN108773141A (en) * | 2018-05-22 | 2018-11-09 | 南京亚博联新材料科技股份有限公司 | A kind of polyester reflective film and its preparation method and application |
| CN110837142A (en) * | 2018-08-17 | 2020-02-25 | 宁波长阳科技股份有限公司 | White reflective polyester film |
| CN111361184A (en) * | 2020-03-31 | 2020-07-03 | 南京兰埔成新材料有限公司 | Preparation method of micro-bubble high-reflectivity white polyester reflecting film |
| CN111378256A (en) * | 2018-12-28 | 2020-07-07 | 宁波长阳科技股份有限公司 | Deformable polyester reflective polyester film and preparation method thereof |
| CN114325904A (en) * | 2021-12-15 | 2022-04-12 | 合肥乐凯科技产业有限公司 | Polyester reflecting film for large-size thin display |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158663A1 (en) * | 2006-12-29 | 2008-07-03 | Eternal Chemical Co., Ltd. | Anti-UV coating composition and the use thereof |
| CN202271612U (en) * | 2011-10-22 | 2012-06-13 | 东华大学 | PET (polyethylene terephthalate) micro-foaming reflecting film |
| CN103018804A (en) * | 2012-12-28 | 2013-04-03 | 合肥乐凯科技产业有限公司 | Reflecting film |
| CN103454701A (en) * | 2013-09-16 | 2013-12-18 | 宁波东旭成新材料科技有限公司 | High-stiffness composite reflecting film |
| CN203658609U (en) * | 2013-12-19 | 2014-06-18 | 南京兰埔成新材料有限公司 | Micro-foaming polyester reflective film |
-
2013
- 2013-12-19 CN CN201310703813.2A patent/CN103675965B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080158663A1 (en) * | 2006-12-29 | 2008-07-03 | Eternal Chemical Co., Ltd. | Anti-UV coating composition and the use thereof |
| CN202271612U (en) * | 2011-10-22 | 2012-06-13 | 东华大学 | PET (polyethylene terephthalate) micro-foaming reflecting film |
| CN103018804A (en) * | 2012-12-28 | 2013-04-03 | 合肥乐凯科技产业有限公司 | Reflecting film |
| CN103454701A (en) * | 2013-09-16 | 2013-12-18 | 宁波东旭成新材料科技有限公司 | High-stiffness composite reflecting film |
| CN203658609U (en) * | 2013-12-19 | 2014-06-18 | 南京兰埔成新材料有限公司 | Micro-foaming polyester reflective film |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614792A (en) * | 2015-01-26 | 2015-05-13 | 宁波长阳科技有限公司 | Anti-scraping reflector plate and preparation method thereof |
| CN104614792B (en) * | 2015-01-26 | 2017-04-05 | 宁波长阳科技股份有限公司 | A kind of anti-scratch reflector plate and preparation method thereof |
| CN105911622A (en) * | 2016-06-27 | 2016-08-31 | 福建夜光达科技股份有限公司 | Reflection waste regeneration film and manufacturing method thereof |
| CN105911622B (en) * | 2016-06-27 | 2018-06-19 | 福建夜光达科技股份有限公司 | A kind of reflective materials recycling film and its manufacturing method |
| CN108773141A (en) * | 2018-05-22 | 2018-11-09 | 南京亚博联新材料科技股份有限公司 | A kind of polyester reflective film and its preparation method and application |
| CN110837142A (en) * | 2018-08-17 | 2020-02-25 | 宁波长阳科技股份有限公司 | White reflective polyester film |
| CN111378256A (en) * | 2018-12-28 | 2020-07-07 | 宁波长阳科技股份有限公司 | Deformable polyester reflective polyester film and preparation method thereof |
| CN111378256B (en) * | 2018-12-28 | 2022-05-31 | 宁波长阳科技股份有限公司 | Deformable polyester reflective polyester film and preparation method thereof |
| CN111361184A (en) * | 2020-03-31 | 2020-07-03 | 南京兰埔成新材料有限公司 | Preparation method of micro-bubble high-reflectivity white polyester reflecting film |
| CN114325904A (en) * | 2021-12-15 | 2022-04-12 | 合肥乐凯科技产业有限公司 | Polyester reflecting film for large-size thin display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103675965B (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103675965A (en) | Micro-foaming polyester reflecting film | |
| US10345941B2 (en) | Transparent base material film laminate, touch panel sensor film, touch panel, image display device, and method for improving visibility of image display device | |
| TWI777916B (en) | Liquid crystal display device and use of polarizing plate in liquid crystal display device | |
| WO2014038466A1 (en) | Display device with touch panel | |
| CN104246543B (en) | Visual angle margining tablet and flat-panel monitor | |
| JP2015003853A (en) | Plasticizable heat-insulating composition, transparent heat-insulating intermediate sheet and transparent heat-insulating sandwich-structured panel | |
| TWI338705B (en) | Anti-uv reflector | |
| CN108773141A (en) | A kind of polyester reflective film and its preparation method and application | |
| WO2019104488A1 (en) | Method for etching pattern on polymer dispersed liquid crystal film | |
| CN102096128A (en) | Three-layer composite high-performance optical diffusion film and preparation method thereof | |
| KR20200060052A (en) | optical bodies and display equipment comprising the same | |
| CN203658609U (en) | Micro-foaming polyester reflective film | |
| CN103777261B (en) | A kind of reflectance coating | |
| CN103552328B (en) | A kind of low warpage UV resistant reflectance coating and preparation method thereof | |
| CN102981192B (en) | A kind of brightness enhancement film and preparation method thereof | |
| CN112959781B (en) | Optical film substrate and preparation method thereof | |
| CN102096127A (en) | Three-layer composite type anti-scrape high-performance optical diffusion film and preparation method thereof | |
| CN105549135B (en) | Brightness enhancement film, its preparation method and include its display device | |
| CN108469646A (en) | Quantum dot light guiding film and preparation method thereof | |
| TWI721662B (en) | Optical bodies and display equipment comprising the same | |
| CN219676406U (en) | Low side view haze electric control dimming film | |
| KR102540191B1 (en) | optical bodies and display equipment comprising the same | |
| CN102096129A (en) | Three-layer compound antistatic high-performance optical diffusion membrane and preparation method thereof | |
| TW201634955A (en) | White reflective film for direct surface light source and direct surface light source using same | |
| JP2005225108A (en) | Polycarbonate molding for optics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Jin Huailong Inventor after: Shen Anle Inventor before: Jin Huailong Inventor before: Shen Anle Inventor before: Xu Chengcheng |
|
| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20201219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |