CN103360748B - PC composition for optical reflector film and preparation method of the optical reflector film - Google Patents
PC composition for optical reflector film and preparation method of the optical reflector film Download PDFInfo
- Publication number
- CN103360748B CN103360748B CN201310331262.1A CN201310331262A CN103360748B CN 103360748 B CN103360748 B CN 103360748B CN 201310331262 A CN201310331262 A CN 201310331262A CN 103360748 B CN103360748 B CN 103360748B
- Authority
- CN
- China
- Prior art keywords
- film
- weight
- temperature
- optical reflector
- reflector film
- 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.)
- Expired - Fee Related
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a PC composition for an optical reflector film and a preparation method of the optical reflector film. The PC composition comprises, by weight, 42-77 parts of polycarbonate and 23-58 parts of a reflection masterbatch. The reflection masterbatch comprises, by weight, 50-60 parts of titanium dioxide, 35-45 parts of a polyester and 5-10 parts of a compatible dispersing assistant. The preparation method of the optical reflector film from the PC composition comprises the following steps of extrusion, molding by a pair of molding rollers, cooling and setting. Compared with the prior art, the optical reflector film has good reflection effects, a simple structure, stable product performances and a low cost.
Description
Technical field
The present invention relates to a kind of polycarbonate (PC) composition producing optical reflection plastics film, and use this polycarbonate (PC) composition to prepare the method for optical reflection plastics film.
Background technology
All reflector plate has been used in the backlight module of current LCD/LED indicating meter, it is mainly used for the light source of the luminescent lamp or LED that cover cold-cathode tube and leaks outside, light source can be reflected back again, front projection can be concentrated, which increase briliancy and the brightness of screen, and visual angle and uniformity coefficient can be promoted, when not increasing light source, improve the utilization benefit of light.The widely used reflectance coating of present industry consists essentially of the different type of reflective metal film, surface blister tapetum lucidum and matrix particle tapetum lucidum three kinds, it is reflective that described reflective metal film utilizes metal level to carry out, its principle be outer shell electronics (unbound electron) in conductor material not completely fetter by nucleus, when being subject to light-wave irradiation, the electric field of light wave makes this unbound electron absorb the energy of light, thus by vibrating with light same frequency, in oscillatory process, release again the light with original light same frequency, be the reflection of light.The perveance of metal is higher, and reflectivity is higher, utilizes the materials such as gold and silver, aluminium, copper to make reflective metal film so in the prior art more.For reflective metal film, its advantage is that preparation technology is simple, and the wavelength region of work is wide.Shortcoming is that light loss is large, and reflectivity can not be very high.Because the materials such as aluminium, silver, copper are easy to oxidation in atmosphere, performance can progressively reduce simultaneously, and the obvious cost of non-oxidizing gold copper-base alloy is too high.
In the industry cycle in order to make the reflectivity of reflective metal film improve further, Ye You manufacturer takes and adds which floor certain thickness dielectric layer of plating (being generally resin) in the outside of film, jointly form inter metal dielectric reflectance coating with reflective metal film, common method adopts the methods such as evaporation, sputter, ion plating to make metal combine to form plane of reflection with plastic, transparent base material.The method of even now also has certain effect to a certain extent, but the reflectivity increased by dielectric layer is general only effective to the light of a certain specific wavelength, the light reflectance of this wavelength adds, the light reflectance of another wavelength is likely made to correspondingly reduce, such method is not that entire spectrum is effective, obviously can be subject to larger limitation for this reason, in addition, no matter be evaporation, sputter, or ion plating, all will raise the cost significantly, reduce production efficiency, and the control adding plating quality of dielectric layer is also comparatively complicated, and directly can affect the quality of the finished product.
Surface blister tapetum lucidum is the universal reflecting film product of one that numerous manufacturer uses, it adopts transparent resin material, as PET (polyethylene terephthalate) or PC(polycarbonate) as base material, the very thin trickle foaming layer of one deck is formed again by processing on base material, the alveolate rete people of the band that this one deck is very thin are referred to as bubble Porous rete, the diameter of bubble only has several micron order, bubble is more thin less, density is higher, then reflectivity is higher, for reaching minimizing aberration, improve the objects such as luminous reflectance homogeneity, some producer also adds titanium dioxide in the substrate, barium sulfate, the inorganic particulates such as silicon-dioxide are improved.
In some application that some are not very high to reflectivity requirements, then also have use some not refinement fretting map layer and just add inorganic particulate in the substrate PET to form the product of reflectance coating, Here it is so-called matrix particle tapetum lucidum, the problem of this reflectance coating is that reflectivity index is lower, can not meet high-end application needs.
In a word, product structure is complicated to have the reflectance coating Problems existing of better reflectivity to be in the prior art, and processed complex, production efficiency is low.The major cause that problem is formed is as reaching light wave reflection characteristic, and above-mentioned reflectance coating all needs, on separate substrates/base material, to carry out processing treatment in addition, as system plating, coating, foaming etc., so this series products mostly is multilayered structure, and complex structure.And more such Product processing that also makes of operation is complicated, production efficiency is low; Two is instability of quality product, and its major cause is that the operation of before-mentioned products is various and product structure complicated, and this unstable that directly results in quality product is relatively high.Such as, the high employing PET of existing market occupation rate adds the reflectance coating that fretting map technology is made, it reaching uvioresistant by adding the particle such as titanium dioxide and barium sulfate in the substrate, suppressing aberration, stablize, improving the effects such as reflectivity, but whether the size of these inorganic particulates, dispersion be even etc. all can impact the quality of reflectance coating, any one link goes wrong and all likely causes scrapping of entire block; For another example, because aforesaid reflectance coating is multilayered structure mostly, bonding state between layers, evaporation whether sputter even etc. that many factors affects the form of quality of the finished product.For porous film, what affect quality product also comprises the many factors such as foaming quality such as surface blister density; Its three is that product cost is higher, and one is that the production cost of base material/substrate used is higher.Such as apply now the reflectance coating of maximum PET+ fretting map, its base material generally uses PET (polyethylene terephthalate) film, such film needs to adopt biaxial stretch-formed technology when producing, such production line drops into huge, and cost is higher, is substantially monopolized by manufacturer of Japan and Korea S at present, thus make base material/substrate cost higher, such reflecting film structure is complicated in addition, and processed complex, fraction defective is relatively high is also one of reason causing cost higher.
Simultaneously, continuation will keep increasing fast future by the domestic electronic product comprising LCD TV, add the application demand on some other product, the demand of tapetum lucidum can estimate that future will increase further, obviously, a kind of reflecting effect can be provided good, the optics reflecting film that structure is simple, product performance are stablized, cost is low has great significance.In sum, obvious prior art has the necessity improved further.
Summary of the invention
The object of the invention is to a kind of optics reflecting film PC composition and use this PC composition to prepare the method for optics reflecting film, to overcome prior art Problems existing.
A kind of optics reflecting film PC composition of the present invention, is characterized in that counting it by weight composed as follows:
Polycarbonate 42-77 part
Reflection masterbatch 23-58 part
Wherein: described reflection masterbatch counts that it is composed as follows by weight:
Titanium dioxide 50-60 part
Polyester 35-45 part
Compatible dispersing auxiliary 5-10 part
Described polyester is at least one in polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyarylester;
Described compatible dispersing auxiliary is at least one in polyethylene low-molecular-weight wax, stearate, erucicamide.
In the present invention, described titanium dioxide, in reflection masterbatch, meter accounts for 50-60 part by weight, and its effect is a covering, makes whole material present White-opalescent, and two is utilize scattering of light effect to stop UV radiation, can protect UVA or UVB.It is good that titanium dioxide median size (diameter) is preferably 300-400nm, and now not easily condense, well uniformly dispersed, excellent in light-resistance, also can play luminous reflectance effect to a certain extent.
Use aforesaid polycarbonate compositions to prepare a preparation method for optics reflecting film, it is characterized in that being made up of following steps:
Raw material prepares: meter prepares polycarbonate 42-77 part and reflection masterbatch 23-58 part by weight, and wherein said reflection masterbatch is counted by weight and consisted of titanium dioxide 50-60 part, polyester 35-45 part, compatible dispersing auxiliary 5-10 part;
Dry: each raw material, respectively by respective feeder, send into stirrer and stir, then wind is delivered to resin retention tank, and successively in crystallizer and moisture eliminator, carry out drying treatment with the warm air of drying, drying temperature 125-135 DEG C, time of drying 4-6 hour;
Extrude: the raw material after drying treatment is sent in forcing machine and carried out melting and extrude from the die lip of T mould, make it melt in the form of sheets, extruder temperature: 230 DEG C ~ 270 DEG C, runner temperature: 230 DEG C ~ 270 DEG C, T die temperature: 230 DEG C ~ 300 DEG C, Melt Pump rotating speed: 2600-2650rmp;
Shaping: use two by metal or rubber make and smooth surface or be with textured a pair shaping roller to sheet melt calendering formation, bath surface is in the form of sheets presented include but not limited to smooth, frosted, sub-light, wire-drawing effect, described shaping roller temperature is 100 ~ 135 DEG C;
Cooling, sizing: make shaping after sheet melt fast from the running roller process utilizing uninterrupted water-cooled freeze, form film after fixed surface shape while of cooling.Chill-roll temperature 90-110 DEG C;
Traction rolling: film is drawn from running roller and adopts automatic thickness tester thickness measuring simultaneously, and thickness measuring is fed back to Controlling System, by Controlling System according to thickness measuring data point reuse extrusion capacity and die gap size;
Film rolling is tubular coiled material or sheet material after trimming by overlap, rolling: excision film edge material.
As preferably, described a pair shaping roller one of them be sub-Seterolithography running roller, another is frosted shaping roller, and the optical reflection plastics film one side formed like this is frosting, and another side is dull surface, has better reflecting effect.
The optics reflecting film using polycarbonate compositions of the present invention simultaneously to adopt method of the present invention to prepare, the spectrophotometer CM-5 of Konica Minolta company is adopted to test, reflectivity can reach about 95%, reach the index of existing external superior product completely, cost only has 1/2 of external superior product simultaneously, and obvious object of the present invention is achieved.
Tool present embodiment
Below with reference to present pre-ferred embodiments, the invention will be further described.
Embodiment: the formula of each embodiment is shown in table 1, the formula of described each embodiment is to be counted by weight.
Table 1: embodiment one to embodiment three is filled a prescription
Wherein embodiment 1 prepares the 0.188mm back side is dull surface, and front is the optics reflecting film of frosting; It is dull surface that embodiment 2 prepares the 0.225mm back side, and front is the optics reflecting film of frosting; It is dull surface that embodiment 3 prepares the 0.500mm back side, and front is the optics reflecting film of frosting.
Use the polycarbonate compositions of foregoing embodiments to prepare the preparation method of optical reflection plastics film, be made up of following steps:
Raw material prepares: prepare each raw material by the number by weight shown in table 1;
Dry: each raw material, respectively by respective feeder, send into stirrer and stir, then wind is delivered to resin retention tank, and successively in crystallizer and moisture eliminator, carry out drying treatment with the warm air of drying, drying temperature 130 DEG C, 5 hours time of drying;
Extrude: the raw material after drying treatment is sent in forcing machine and carried out melting and extrude from the die lip of T mould, makes it melt in the form of sheets, extruder temperature: 250 DEG C, runner temperature: 255 DEG C, T die temperature: 260 DEG C, Melt Pump rotating speed: 2610rmp;
Shaping: use two by metal or rubber make and smooth surface or be with textured a pair shaping roller to sheet melt calendering formation, described a pair shaping roller one of them be sub-Seterolithography running roller, another is frosted shaping roller, make bath surface in the form of sheets present front frosted, reverse side matte effect, described shaping roller temperature is 120 DEG C;
Cooling, sizing: make shaping after sheet melt fast from the running roller process utilizing uninterrupted water-cooled freeze, form film after fixed surface shape while of cooling.Chill-roll temperature 100 DEG C;
Traction rolling: film is drawn simultaneously by automatic thickness tester thickness measuring from running roller, and thickness measuring is fed back to Controlling System, by Controlling System according to thickness measuring data point reuse extrusion capacity and die gap size;
Film rolling is tubular coiled material or sheet material after trimming by overlap, rolling: excision film edge material.
The optics reflecting film of Konica Minolta company CM-5 spectrophotometer to each embodiment is adopted to test, testing light source is D65 standard light source, light frequency range is 360-740 nm, and wavelength interval is 10nm, and test result is the reflectivity of the optics reflecting film of embodiment 1 is 94.345; The reflectivity of the optics reflecting film of embodiment 2 is 95.275; The reflectivity of the optics reflecting film of embodiment 3 is 95.865.Obviously fabulous reflecting effect is all had.
The above, be only the specific embodiment of the present invention.But scope is not limited thereto.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention, therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (3)
1. an optics reflecting film PC composition, is characterized in that counting it by weight composed as follows:
Polycarbonate 42-77 part
Reflection masterbatch 23-58 part
Wherein: described reflection masterbatch counts that it is composed as follows by weight:
Titanium dioxide 50-60 part
Polyester 35-45 part
Compatible dispersing auxiliary 5-10 part
Described polyester is polyarylester;
Described compatible dispersing auxiliary is at least one in polyethylene low-molecular-weight wax, stearate, erucicamide.
2. adopt PC composition according to claim 1 to prepare an optics reflecting film method, it is characterized in that being made up of following steps:
Raw material prepares: meter prepares polycarbonate 42-77 part and reflection masterbatch 23-58 part by weight, and wherein said reflection masterbatch is counted by weight and consisted of titanium dioxide 50-60 part, polyester 35-45 part, compatible dispersing auxiliary 5-10 part;
Dry: each raw material, respectively by respective feeder, send into stirrer and stir, then wind is delivered to resin retention tank, and successively in crystallizer and moisture eliminator, carry out drying treatment with the warm air of drying, drying temperature 125-135 DEG C, time of drying 4-6 hour;
Extrude: the raw material after drying treatment is sent in forcing machine and carried out melting and extrude from the die lip of T mould, make it melt in the form of sheets, extruder temperature: 230 DEG C ~ 270 DEG C, runner temperature: 230 DEG C ~ 270 DEG C, T die temperature: 230 DEG C ~ 300 DEG C, Melt Pump rotating speed: 2600-2650rmp;
Shaping: use two by metal or rubber make and smooth surface or be with textured a pair shaping roller to sheet melt calendering formation, bath surface is in the form of sheets presented include but not limited to smooth, frosted, sub-light, wire-drawing effect, described shaping roller temperature is 100 ~ 135 DEG C;
Cooling, sizing: make shaping after sheet melt fast from the running roller process utilizing uninterrupted water-cooled freeze, form film after fixed surface shape while of cooling, described chill-roll temperature is 90-110 DEG C;
Traction rolling: film is drawn from running roller and adopts automatic thickness tester thickness measuring simultaneously, and thickness measuring is fed back to Controlling System, by Controlling System according to thickness measuring data point reuse extrusion capacity and die gap size;
Film rolling is tubular coiled material or sheet material after trimming by overlap, rolling: excision film edge material.
3. one according to claim 2 adopts PC composition according to claim 1 to prepare optics reflecting film method, and to it is characterized in that in described a pair shaping roller that one for sub-Seterolithography running roller, another is frosted shaping roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331262.1A CN103360748B (en) | 2013-08-01 | 2013-08-01 | PC composition for optical reflector film and preparation method of the optical reflector film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310331262.1A CN103360748B (en) | 2013-08-01 | 2013-08-01 | PC composition for optical reflector film and preparation method of the optical reflector film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103360748A CN103360748A (en) | 2013-10-23 |
| CN103360748B true CN103360748B (en) | 2015-07-08 |
Family
ID=49363059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310331262.1A Expired - Fee Related CN103360748B (en) | 2013-08-01 | 2013-08-01 | PC composition for optical reflector film and preparation method of the optical reflector film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103360748B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589132A (en) * | 2013-11-26 | 2014-02-19 | 连平长荣塑胶有限公司 | PC composition for optical reflection film, and making method of film |
| CN103724974B (en) * | 2014-01-10 | 2017-05-24 | 西南科技大学 | High-light-reflectivity PC (polycarbonate) film material and preparation method thereof |
| CN103724975B (en) * | 2014-01-10 | 2017-11-28 | 西南科技大学 | A kind of high light reflectivity PC membrane materials and preparation method thereof |
| CN106626427B (en) * | 2017-02-24 | 2019-04-02 | 南通鼎尚电子材料有限公司 | A kind of PET film band process units |
| CN114935851A (en) * | 2022-04-27 | 2022-08-23 | 深圳市南极光电子科技股份有限公司 | Generation process of reflector plate of MiniMicroLED backlight source module |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176229A (en) * | 2013-04-12 | 2013-06-26 | 宁波长阳科技有限公司 | Compound optical reflecting film and preparation method thereof |
-
2013
- 2013-08-01 CN CN201310331262.1A patent/CN103360748B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103176229A (en) * | 2013-04-12 | 2013-06-26 | 宁波长阳科技有限公司 | Compound optical reflecting film and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103360748A (en) | 2013-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103360748B (en) | PC composition for optical reflector film and preparation method of the optical reflector film | |
| CN107209292B (en) | Sheet of transparent formed body, the transparent screen for having the sheet of transparent formed body and the image projection device including the sheet of transparent formed body or transparent screen | |
| CN103176229B (en) | Compound optical reflecting film | |
| CN100554767C (en) | Reflector and adopt its projection type video display device | |
| JPWO2006112425A1 (en) | Reflective sheet and manufacturing method thereof | |
| JP5985809B2 (en) | Polyester film for reflector | |
| JPWO2016167221A1 (en) | Transparent substrate film laminate, sensor film for touch panel, touch panel, image display device, and method for improving visibility of image display device | |
| WO2016190137A1 (en) | Transparent layered body, transparent screen provided with same, and image projection system provided with same | |
| CN103589132A (en) | PC composition for optical reflection film, and making method of film | |
| CN112485946A (en) | Reflective film for thin direct type liquid crystal display device and preparation method thereof | |
| JP5985808B2 (en) | Polyester film for reflector | |
| CN109073963B (en) | Transparent light diffuser, reflective transparent screen and image projection system | |
| CN104965245A (en) | Heat conducting reflection film and backlight module set | |
| JP2007146014A (en) | Polyester film for reflector | |
| JP2012135952A (en) | White polyester film | |
| WO2017010471A1 (en) | White-reflecting film for large-scale display | |
| TWI504669B (en) | Polyester resin composition and polyester film using thereof | |
| CN106908883B (en) | A kind of small-medium size reflectance coating and preparation method thereof | |
| JP2004255581A (en) | Biaxially stretched laminated polyester film for reflection film | |
| JP2010052329A (en) | White color laminate polyester film for liquid crystal reflection sheet | |
| JP2013164523A (en) | Polyester film for optical functional film | |
| JP6259278B2 (en) | White reflective film for direct surface light source | |
| JP6490891B2 (en) | White reflective film for direct surface light source | |
| CN102257409A (en) | Light reflector and surface light source apparatus | |
| JP2001098088A (en) | Polyester film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180801 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |