CN104403245B - A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof - Google Patents
A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof Download PDFInfo
- Publication number
- CN104403245B CN104403245B CN201410763324.0A CN201410763324A CN104403245B CN 104403245 B CN104403245 B CN 104403245B CN 201410763324 A CN201410763324 A CN 201410763324A CN 104403245 B CN104403245 B CN 104403245B
- Authority
- CN
- China
- Prior art keywords
- polyvinyl alcohol
- glycerol
- stock solution
- thin film
- polymer 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.)
- Active
Links
Landscapes
- Polarising Elements (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses a kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof；After this thin film infiltrates 30 300s in the distilled water of 30 DEG C, the glycerol mass content in thin film is down to less than 3%, and on the width of thin film, at every 5cm region, the glycerol mass content difference of point is less than 1%；The manufacture method of this thin film includes preparing masking stock solution, mix and blend, masking stock solution under masking stock solution condition of high voltage being formed the steps such as initial embryophoric membrane, the drying of initial embryophoric membrane Infrared Heating, hot blast heat treatment.The present invention can effectively solve dyeing inequality, the phenomenon such as mottle occurred in light polarizing film preparation.
Description
Technical field
The invention belongs to technical field of film preparation, be specifically related to a kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof.
Background technology
Polaroid is the important component part of liquid crystal display (LCD), is mainly used in controlling the optical activity through liquid crystal light.Polaroid is usually polyvinyl alcohol based polymer (PVA) film uniaxial extension, and the two sides of the polarization film of dyeing preparation further is pasted the protecting film such as cellulose triacetate (TAC) such as and made.
Along with the extension of LCD area, require the production of larger sized polaroid simultaneously.Relative to small-medium size polaroid, big size polaroid easily occurs mottle in manufacturing process, dye the defects such as uneven, stretching speckle, and therefore the PVA film that large scale optics is homogeneous is just had higher requirement by this.
In order to improve the problem such as PVA light polarizing film mottle, stretching speckle, patents 200880103776.9,201280015847.6,01115587.6 etc. are proposed by PVA solution being extruded by die head, at roller surface filming, subsequently through some dryer roll drying and forming-films with the method improving light polarizing film mottle.The known thickness speckle that has in thin film TD direction is 12% and following (Japanese Unexamined Patent Publication 323077), hot water in thin film TD direction cut off temperature spots be less than 1.5 DEG C (Japanese Unexamined Patent Publications 30163), tensile elongation (Sm) in thin film MD direction be 0.7-1.3(Japanese Unexamined Patent Publication 30164 with the ratio (SM, ST) of the tensile elongation (ST) in TD direction) etc. make polymer film of polyvinyl alcohol construct speckle, anisotropy or the method for thickness evenness.Patent 200880102610.5 proposes by improving glycerol being uniformly distributed in PVA film, the method improving dyeability.
But, even if by these methods, polarizing film still there are defect, it is impossible to fully meeting offer can be to the requirement of the light polarizing film of the large screen being applied to liquid crystal display.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof, it is possible to effective solve light polarizing film preparation occurs dyeing inequality, the phenomenon such as mottle.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
The invention discloses a kind of polymer film of polyvinyl alcohol with excellent dyeability, the thin film that this thin film is made up of the masking stock solution containing vinol series polymer and glycerol, after this thin film infiltrates 30-300s in the distilled water of 30 DEG C, glycerol mass content in thin film is down to less than 3%, preferably less than 1%, most preferably less than 0.5%, and on the width of thin film, at every 5cm region, the glycerol mass content difference of point is less than 1%, preferably smaller than 0.5%, more preferably less than 0.2%.
The present invention studies discovery, and the polymer film of polyvinyl alcohol possessing These characteristics does not haves the phenomenons such as dyeing inequality, mottle during follow-up dyeing stretching fixing preparation light polarizing film.
In the present invention, the thickness of described thin film is preferably 50-80 μm.
The invention also discloses the manufacture method of a kind of polymer film of polyvinyl alcohol with excellent dyeability, comprise the following steps:
1) the masking stock solution of polymer film of polyvinyl alcohol is prepared；
2) by masking stock solution mixing and stirring under 100-150 DEG C of condition of high voltage；
3) by the masking stock solution of mixing and stirring with on membranaceous discharge to dryer roll, initial embryophoric membrane is formed；
4) from roller sur-face peeling when initial embryophoric membrane moisture content on dryer roll arrives 10%-25%, dried by the Infrared Heating of 50-120 DEG C, prepare thin film；
5) thin film after drying, by the hot blast heat treatment of 90-150 DEG C, obtains the polymer film of polyvinyl alcohol with excellent dyeability by damping.
Dried and the hot blast heat treatment of 90-150 DEG C by the control of above-mentioned preparation method, particularly masking stock solution mix and blend, the Infrared Heating of 50-120 DEG C under 100-150 DEG C of condition of high voltage, it is possible to prepare the polymer film of polyvinyl alcohol possessing These characteristics.
Above-mentioned steps 1) in, masking stock solution can select to be made up of vinol series polymer, plasticizer, surfactant and solvent, vinol series polymer accounts for the 10%-60% of masking stock solution gross mass, the content of plasticizer is the 7%-15% of vinol series polymer quality, the content of surfactant is the 0.01%-3% of vinol series polymer quality, and surplus is solvent.The degree of polymerization of vinol series polymer is preferably 1000-5000, alcoholysis degree is preferably more than 99%, the preferred water of solvent, plasticizer is the mixture of glycerol or glycerol and other polyhydric alcohol, and surfactant is preferably used anionic or nonionic surfactant.
Above-mentioned steps 2) in, the masking stock solution method that mix and blend can select under 100-150 DEG C of condition of high voltage has: material is initially passed through the purification high-pressure steam of 100-150 DEG C, completes the stirring of material and mixes, and finally regulates solution concentration；To material mixing and dissolving in the range of being gradually heating to 100-150 DEG C by autoclave, finally regulate solution concentration.Solution dissolved state and glycerol content change are evaluated in sampling per hour, until in continuous two batch sample the error of glycerol actual content and glycerol theoretical content within 2% and solution is completely dissolved, just can be considered mixing and stirring.
Above-mentioned steps 3) in, the film build method that preferably film forming thickness is uniform, flatness is good, such as by air pressure extrusion masking stock solution by the method for die slit film forming, by Screw Extrusion masking stock solution by the method for slit film forming, melt extruded masking stock solution by screw rod by the method etc. of slit film forming, die head preferably has the die types of rack-style runner.
Above-mentioned steps 5) in, use air-floatation type oven to thin film heat treatment, heat treatment time is 1-180s.
The invention also discloses a kind of polarizing film, this polarizing film is made by described polymer film of polyvinyl alcohol and obtains.
The beneficial effects of the present invention is:
The present invention studies discovery, after polymer film of polyvinyl alcohol infiltrates 30-300s in the distilled water of 30 DEG C, if the remnants of glycerol and distribution meet certain requirements, then this thin film does not haves the phenomenons such as dyeing inequality, mottle during follow-up dyeing stretching fixing preparation light polarizing film.And the control that the present invention is by preparation method, particularly masking stock solution mix and blend, Infrared Heating of 50-120 DEG C under 100-150 DEG C of condition of high voltage is dried and the hot blast heat treatment of 90-150 DEG C, it is possible to prepare the polymer film of polyvinyl alcohol possessing These characteristics.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the preferred embodiments of the present invention will be described in detail below.
In the present invention, the assay method of glycerol content is as follows:
Testing sample is put into DMSO-d6Make concentration become to be about 5 mass %, dissolve with 2h after being warming up to 90 DEG C, use 500MHz,1H-NMR and with PD(pulse delay time) 20s, measure temperature 30 DEG C, the condition of cumulative number 256 times is measured, obtained NMR spectra measure the content of plasticizer in each sample.Such as, the occasion of glycerol is used in plasticizer, according to the NMR spectra obtained by above-mentioned test, crest crest of 2 hydrogen partials of methylene of (integrated intensity of crest is Sg), PVA (integrated intensity of crest is Sp) near 1.5ppm near 3.3ppm at 2 hydrogen partials of methylene of glycerol can detect respectively, use its integrated intensity glycerol amount R(mass % that can calculate in PVA system thin film with following formula): R=(92/44) × (Sg/Sp) × 100.
Embodiment
1
The manufacture of polymer film of polyvinyl alcohol is carried out in accordance with the following steps:
1) in mass ratio, polyvinyl alcohol: glycerol: sodium lauryl sulphate: water=10:0.7:0.001:90, prepare masking stock solution, wherein the degree of polymerization of polyvinyl alcohol is 5000, and saponification degree is 99.7%.
2) masking stock solution is added autoclave, speed of agitator 300r/min, under the conditions of 100 DEG C, material is mixed.Solution dissolved state and glycerol content change are evaluated in sampling per hour, and after stirring reaches 4h, in continuous two batch sample, glycerol actual content and the error of the theoretical content of glycerol are 1.8%, and solution is completely dissolved.
3) the masking stock solution of mixing and stirring is extruded by double screw extruder, by, in hanger-style die extrusion to dryer roll, forming initial embryophoric membrane.
4) initial embryophoric membrane is from roller sur-face peeling time on dryer roll, moisture content is 20%, is dried by the Infrared Heating of 70 DEG C, prepares thin film.
5) thin film after drying uses the hot blast heat treatment of air-floatation type oven 130 DEG C, and heat treatment time is 60s, obtains polymer film of polyvinyl alcohol by damping.The thickness of thin film is 50 μm.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 0.4%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is respectively less than 0.2%.Thin film, after dyeing stretching is fixing, does not has the bad phenomenon such as any mottle, coloring.
Embodiment
2
The manufacture of polymer film of polyvinyl alcohol is carried out in accordance with the following steps:
1) in mass ratio, polyvinyl alcohol: glycerol: sodium lauryl sulphate: water=60:9:1.8:29, prepare masking stock solution, wherein the degree of polymerization of polyvinyl alcohol is 5000, and saponification degree is 99.7%.
2) masking stock solution is added autoclave, speed of agitator 300r/min, under the conditions of 150 DEG C, material is mixed.Solution dissolved state and glycerol content change are evaluated in sampling per hour, and after stirring reaches 6h, in continuous two batch sample, glycerol actual content and the error of the theoretical content of glycerol are 1.1%, and solution is completely dissolved.
3) the masking stock solution of mixing and stirring is extruded by double screw extruder, by, in hanger-style die extrusion to dryer roll, forming initial embryophoric membrane.
4) initial embryophoric membrane is from roller sur-face peeling time on dryer roll, moisture content is 20%, is dried by the Infrared Heating of 70 DEG C, prepares thin film.
5) thin film after drying uses the hot blast heat treatment of air-floatation type oven 130 DEG C, and heat treatment time is 60s, obtains polymer film of polyvinyl alcohol by damping.The thickness of thin film is 80 μm.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 30s, its glycerol mass content is down to the film width after 2.8%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is respectively less than 1%.Thin film, after dyeing stretching is fixing, does not has the bad phenomenon such as any mottle, coloring.
Embodiment
3
The manufacture of polymer film of polyvinyl alcohol is carried out in accordance with the following steps:
1) in mass ratio, polyvinyl alcohol: glycerol: sodium lauryl sulphate: water=30:3:0.045:67, prepare masking stock solution, wherein the degree of polymerization of polyvinyl alcohol is 5000, and saponification degree is 99.7%.
2) masking stock solution is added autoclave, speed of agitator 300r/min, under the conditions of 130 DEG C, material is mixed.Solution dissolved state and glycerol content change are evaluated in sampling per hour, and after stirring reaches 6h, in continuous two batch sample, glycerol actual content and the error of the theoretical content of glycerol are 0.9%, and solution is completely dissolved.
3) the masking stock solution of mixing and stirring is extruded by double screw extruder, by, in hanger-style die extrusion to dryer roll, forming initial embryophoric membrane.
4) initial embryophoric membrane is from roller sur-face peeling time on dryer roll, moisture content is 25%, is dried by the Infrared Heating of 120 DEG C, prepares thin film.
5) thin film after drying uses the hot blast heat treatment of air-floatation type oven 150 DEG C, and heat treatment time is 60s, obtains polymer film of polyvinyl alcohol by damping.The thickness of thin film is 75 μm.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 300s, its glycerol mass content is down to the film width after 0.3%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is respectively less than 0.2%.Thin film, after dyeing stretching is fixing, does not has the bad phenomenon such as any mottle, coloring.
Embodiment
4
The manufacture of polymer film of polyvinyl alcohol is carried out in accordance with the following steps:
1) in mass ratio, polyvinyl alcohol: glycerol: sodium lauryl sulphate: water=30:3:0.045:67, prepare masking stock solution, wherein the degree of polymerization of polyvinyl alcohol is 5000, and saponification degree is 99.7%.
2) masking stock solution is added autoclave, speed of agitator 300r/min, under the conditions of 130 DEG C, material is mixed.Solution dissolved state and glycerol content change are evaluated in sampling per hour, and after stirring reaches 6h, in continuous two batch sample, glycerol actual content and the error of the theoretical content of glycerol are 1.0%, and solution is completely dissolved.
3) the masking stock solution of mixing and stirring is extruded by double screw extruder, by, in hanger-style die extrusion to dryer roll, forming initial embryophoric membrane.
4) initial embryophoric membrane is from roller sur-face peeling time on dryer roll, moisture content is 10%, is dried by the Infrared Heating of 50 DEG C, prepares thin film.
5) thin film after drying uses the hot blast heat treatment of air-floatation type oven 90 DEG C, and heat treatment time is 180s, obtains polymer film of polyvinyl alcohol by damping.The thickness of thin film is 75 μm.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 0.3%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is respectively less than 0.2%.Thin film, after dyeing stretching is fixing, does not has the bad phenomenon such as any mottle, coloring.
Embodiment
5
The manufacture of polymer film of polyvinyl alcohol is carried out in accordance with the following steps:
1) in mass ratio, polyvinyl alcohol: glycerol: sodium lauryl sulphate: water=30:3:0.045:67, prepare masking stock solution, wherein the degree of polymerization of polyvinyl alcohol is 5000, and saponification degree is 99.7%.
2) masking stock solution is added autoclave, speed of agitator 300r/min, under the conditions of 130 DEG C, material is mixed.Solution dissolved state and glycerol content change are evaluated in sampling per hour, and after stirring reaches 6h, in continuous two batch sample, glycerol actual content and the error of the theoretical content of glycerol are 0.8%, and solution is completely dissolved.
3) the masking stock solution of mixing and stirring is extruded by double screw extruder, by, in hanger-style die extrusion to dryer roll, forming initial embryophoric membrane.
4) initial embryophoric membrane is from roller sur-face peeling time on dryer roll, moisture content is 20%, is dried by the Infrared Heating of 70 DEG C, prepares thin film.
5) thin film after drying uses the hot blast heat treatment of air-floatation type oven 150 DEG C, and heat treatment time is 60s, obtains polymer film of polyvinyl alcohol by damping.The thickness of thin film is 75 μm.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 0.4%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is respectively less than 0.2%.Thin film, after dyeing stretching is fixing, does not has the bad phenomenon such as any mottle, coloring.
Comparative example
1
Relative to embodiment 5, difference is that masking stock solution is not through step 2) mix and blend of autoclave, but be directly entered step 3) and masking stock solution is extruded by double screw extruder, other are consistent.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 3.6%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is all higher than 1.6%.Thin film, after dyeing stretching is fixing, occurs in that the bad phenomenon such as mottle, coloring.
Comparative example
2
Relative to embodiment 5, difference is in step 4), and initial embryophoric membrane from roller sur-face peeling, is dried by the Hot-blast Heatings of 70 DEG C and prepared thin film time moisture content is 20% on dryer roll, and other are consistent.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 1.8%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is all higher than 1.1%.After dyeing stretching is fixing, there is the bad phenomenon such as a small amount of mottle, coloring in thin film.
Comparative example
3
Relative to embodiment 5, difference is in step 5), and the thin film after drying uses the hot-rolling heat treatment of 150 DEG C, and heat treatment time is 1s, and other are consistent.
This polymer film of polyvinyl alcohol infiltrates in the distilled water of 30 DEG C, and after infiltrating time 160s, its glycerol mass content is down to the film width after 2.2%, and infiltration, and at every 5cm region, the glycerol mass content difference of point is all higher than 1.5%.After dyeing stretching is fixing, there is the bad phenomenon such as a small amount of mottle, coloring in thin film.
The test result of above-described embodiment and comparative example is summarized as follows:
Finally illustrate is, preferred embodiment above is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from claims of the present invention limited range.
Claims (4)
1. the manufacture method of a polymer film of polyvinyl alcohol with excellent dyeability, it is characterised in that: comprise the following steps:
1) the masking stock solution of polymer film of polyvinyl alcohol is prepared；
2) by masking stock solution mixing and stirring under 100-150 DEG C of condition of high voltage；
3) by the masking stock solution of mixing and stirring with on membranaceous discharge to dryer roll, initial embryophoric membrane is formed；
4) from roller sur-face peeling when initial embryophoric membrane moisture content on dryer roll arrives 10%-25%, dried by the Infrared Heating of 50-120 DEG C, prepare thin film；
5) thin film after drying, by the hot blast heat treatment of 90-150 DEG C, obtains the polymer film of polyvinyl alcohol with excellent dyeability by damping.
2. according to the manufacture method of the polymer film of polyvinyl alcohol described in claim 1, it is characterized in that: in described step 1), masking stock solution is made up of vinol series polymer, plasticizer, surfactant and solvent, vinol series polymer accounts for the 10%-60% of masking stock solution gross mass, the content of plasticizer is the 7%-15% of vinol series polymer quality, the content of surfactant is the 0.01%-3% of vinol series polymer quality, and surplus is solvent；Described plasticizer includes at least glycerol.
3. according to the manufacture method of the polymer film of polyvinyl alcohol described in claim 1, it is characterized in that: described step 2) in, solution dissolved state and glycerol content change are evaluated in sampling per hour, until in continuous two batch sample the error of glycerol actual content and glycerol theoretical content within 2% and solution is completely dissolved.
4. according to the manufacture method of the polymer film of polyvinyl alcohol described in claim 1, it is characterised in that: in described step 5), using air-floatation type oven to thin film heat treatment, heat treatment time is 1-180s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763324.0A CN104403245B (en) | 2014-12-12 | 2014-12-12 | A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410763324.0A CN104403245B (en) | 2014-12-12 | 2014-12-12 | A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104403245A CN104403245A (en) | 2015-03-11 |
| CN104403245B true CN104403245B (en) | 2016-08-17 |
Family
ID=52640919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410763324.0A Active CN104403245B (en) | 2014-12-12 | 2014-12-12 | A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104403245B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6969378B2 (en) * | 2016-06-27 | 2021-11-24 | 三菱ケミカル株式会社 | A polyvinyl alcohol-based film for a polarizing film, a method for producing the same, and a polarizing film using the polyvinyl alcohol-based film for the polarizing film. |
| CN107286543B (en) * | 2017-05-27 | 2021-03-19 | 中国石油化工集团公司 | Polyvinyl alcohol optical film and preparation method thereof |
| CN107167861A (en) * | 2017-05-27 | 2017-09-15 | 中国石油化工集团公司 | Polyethenol series optical film and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101778888A (en) * | 2007-08-20 | 2010-07-14 | 株式会社可乐丽 | Polyvinyl alcohol film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3476137B2 (en) * | 2000-05-12 | 2003-12-10 | 株式会社クラレ | Method for producing polyvinyl alcohol-based polymer film |
| JP2001343522A (en) * | 2000-05-31 | 2001-12-14 | Sumitomo Chem Co Ltd | Polarizer film and its manufacturing method |
| JP4421096B2 (en) * | 2000-11-16 | 2010-02-24 | 株式会社クラレ | Method for producing vinyl alcohol polymer film using T-die |
| KR100886322B1 (en) * | 2006-06-26 | 2009-03-04 | 주식회사 엘지화학 | Preparation method of polyvinyl alcohol polarizer film having good surface uniformity |
| CN101580618B (en) * | 2009-06-24 | 2010-12-08 | 宜兴市高拓高分子材料有限公司 | Polyvinyl alcohol film and preparation method thereof |
-
2014
- 2014-12-12 CN CN201410763324.0A patent/CN104403245B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101778888A (en) * | 2007-08-20 | 2010-07-14 | 株式会社可乐丽 | Polyvinyl alcohol film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104403245A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104204046B (en) | Polyvinyl alcohol film and light polarizing film | |
| CN101784590B (en) | Polyvinyl alcohol film and method for producing the same | |
| CN103163583B (en) | The manufacture method of light polarizing film | |
| TWI388413B (en) | Polyvinyl alcohol film and method of manufacturing the same, polarizing film using the same, and polarizing plate using the same | |
| CN104403245B (en) | A kind of polymer film of polyvinyl alcohol with excellent dyeability and manufacture method thereof | |
| KR102295492B1 (en) | Polyvinyl alcohol-based film for polarizing film, manufacturing method thereof, and polarizing film using the polyvinyl alcohol-based film for polarizing film | |
| JP6100167B2 (en) | POLYVINYL ALCOHOL POLYMER FILM AND POLARIZING FILM | |
| JP2007137042A (en) | Polyvinyl alcohol-based film, polarizing film using same, and polarizing plate | |
| CN104311853A (en) | Polyvinyl alcohol polymer film and process for producing same | |
| CN104602912A (en) | Layered object, polarizing film, and process for producing polarizing film | |
| CN101479328A (en) | Preparation method of polyvinyl alcohol film having good surface uniformity, polyvinyl alcohol film made by the same and polarizer film made from the polyvinyl alcohol film | |
| TWI644960B (en) | Production method of polyvinyl alcohol film, polarizing film, and the like | |
| US8574318B2 (en) | Preparation method of optical colorful polyester film using microwave technique | |
| CN104459864B (en) | Polymer film of polyvinyl alcohol and manufacture method thereof | |
| JP2016222834A (en) | Method for producing polyvinyl alcohol film | |
| JP2004020630A (en) | Polyvinyl alcohol film for optical use and manufacturing method | |
| TW202235502A (en) | Polyvinyl alcohol film and optical film thereof | |
| JP3478533B2 (en) | Method for producing polyvinyl alcohol-based polymer film | |
| CN107614578A (en) | The manufacture method and light polarizing film of polyvinyl alcohol film, polyvinyl alcohol film | |
| JP2023076366A (en) | Polyvinyl alcohol film, optical film comprising the same, and manufacturing methods therefor | |
| TW201841718A (en) | Polyvinyl alcohol film, polarizing film and polarizing plate, and polyvinyl alcohol film production method | |
| CN112280226A (en) | Polyvinyl alcohol optical film and preparation method thereof | |
| TWI792702B (en) | Polyvinyl alcohol film, optical film comprising the same, and manufacturing method thereof | |
| CN109782478B (en) | TN/STN polarizing film hue control method | |
| CN106519270A (en) | Polyvinyl alcohol film preparation method |
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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170930 Address after: 401220 Changshou District of Chongqing economic and Technological Development Zone United Road No. 22 Co-patentee after: Yutianhua Co., Ltd., Yunnan Patentee after: Chongqing Yuntianhua hanen New Material Development Co Ltd Address before: 650228 Dianchi Road, Yunnan, China, No. 1417, No. Patentee before: Yutianhua Co., Ltd., Yunnan |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210817 Address after: 401220 No. 22, Qixin Avenue, economic and Technological Development Zone, Changshou District, Chongqing Patentee after: CHONGQING YUNTIANHUA HANEN NEW MATERIAL DEVELOPMENT Co.,Ltd. Address before: 401220 No. 22, Qixin Avenue, economic and Technological Development Zone, Changshou District, Chongqing Patentee before: CHONGQING YUNTIANHUA HANEN NEW MATERIAL DEVELOPMENT Co.,Ltd. Patentee before: YUNNAN YUNTIANHUA Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211018 Address after: 401220 No. 22, Qixin Avenue, economic and Technological Development Zone, Yanjia street, Changshou District, Chongqing Patentee after: Chongqing spectrum New Material Technology Co.,Ltd. Address before: 401220 No. 22, Qixin Avenue, economic and Technological Development Zone, Changshou District, Chongqing Patentee before: CHONGQING YUNTIANHUA HANEN NEW MATERIAL DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |