CN101061402A - Method and apparatus for manufacturing polarizing film - Google Patents
Method and apparatus for manufacturing polarizing film Download PDFInfo
- Publication number
- CN101061402A CN101061402A CNA2006800012106A CN200680001210A CN101061402A CN 101061402 A CN101061402 A CN 101061402A CN A2006800012106 A CNA2006800012106 A CN A2006800012106A CN 200680001210 A CN200680001210 A CN 200680001210A CN 101061402 A CN101061402 A CN 101061402A
- Authority
- CN
- China
- Prior art keywords
- dyeing
- swelling
- bath
- polarizing film
- humidity low
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/023—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets
- B29C55/026—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets using multilayered plates or sheets of preformed plates or sheets coated with a solution, a dispersion or a melt of thermoplastic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Polarising Elements (AREA)
Abstract
A polarizing film production apparatus comprising swelling bath 11, dyeing bath 14 and a drawing bath, wherein high-humidity low-temperature hot air heater/humidifier 13 is disposed between the swelling bath 11 and the dyeing bath 14 in such a fashion that a carry-out edge of polyvinyl alcohol film 10 is dipped in dyeing solution 15 of the dyeing bath 14. In this apparatus, the polyvinyl alcohol film 10 having been swollen by swelling water 12 of the swelling bath 11 is heated and humidified in the high-humidity low-temperature hot air heater/humidifier 13, so that not only is any swelling water remaining in all cellular parts including those at inner central region converted to steam but also steam of the high-humidity low-temperature hot air penetrates all the cellular parts to thereby cause all the cellular parts to be filled with steam. Upon entry of the polyvinyl alcohol film of that state in the dyeing solution 15 of the dyeing bath 14, the steam filling all the cellular parts is cooled and condensed, so that the pressure within all the cellular parts is lowered. Thus, the dyeing solution 15 is suctioned by all the cellular parts including those at inner central region and penetrate the same. As a result, an increasingly uniformized state of dyeing can be accomplished on the polyvinyl alcohol film 10.
Description
Technical field
The present invention relates to a kind of Polarizer that is used to form liquid crystal indicator polarizing film manufacture method and implement the device of this method.
Background technology
As everyone knows, polarizing film is for carrying out swelling with polyvinyl alcohol film (hereinafter referred to as the PVA film) at the swelling groove successively, dye at staining trough, extend and make at extension slot, in order to tackle the requirement that promotes more of the display performance of liquid crystal indicator in recent years, and the more excellent Polarizer formation of manufacturing optical characteristics polarizing film, requirement makes the more homogenising that dyes at the PVA film of swelling, particularly require the dyeing concentration of the central interior portion (central portion of thickness direction) of the general PVA film of thinking to be lower than the further minimizingization (for example, with reference to patent documentation 1 and 2) of the what is called dyeing uneven phenomenon of surface element.
[patent documentation 1] Japanese patent laid-open 10-153709 communique
[patent documentation 2] Jap.P. spy opens the 2004-125816 communique
Summary of the invention
This case inventor is for responding above-mentioned requirements, and the above-mentioned dyeing uneven phenomenon of microexamination, consequently, after the PVA film is taken out the swelling groove, before entering staining trough, in the swelling step, whole bubble blank parts in the PVA film are (when making film, because of the formed micro hole of bubble) the interior swelling water that is permeated, lose because of parts such as evaporations at surface element, relative therewith, in in fact not loss of central interior portion (central portion), swelling water distribution as a result becomes the more inhomogeneous state of private side, so in staining procedure, dyeing liquor is difficult to infiltrate into central interior portion, even if or infiltrate into central interior portion, also because of by residual swelling water dilution, and the dyeing concentration step-down.
The present invention is based on the uneven mechanism of aforesaid dyeing, and before the PVA film dyeing of swelling, eliminates the distribution of the more swelling water of private side, makes dyeing liquor can fully infiltrate into central interior portion.
According to the present invention, according to claim 1, then the problems referred to above can be solved by the manufacture method of polarizing film, it is served as reasons and the PVA film is carried out the manufacture method of the polarizing film that operation constituted of swelling, dyeing, extension, it is characterized by, after the PVA film is carried out swelling, dyeing before, by high humidity low temperature temperature wind heat, humidification.
In the manufacture method of the described polarizing film of claim 1,, behind the heating by high humidity low temperature temperature wind, humidification, dye continuously immediately preferably as described in the claim 2.
And, according to the present invention, in order to implement the manufacture method of the described polarizing film of claim 1, as described in claim 3, a kind of manufacturing installation of polarizing film is provided, possess swelling groove, staining trough, extension slot, it is characterized by, between swelling groove and staining trough, be provided with high humidity low temperature temperature wind heating/humidifier.
In the manufacturing installation of the described polarizing film of claim 3, be to implement the described method of claim 2, preferably, the film output terminal of high humidity low temperature temperature wind heating/humidifier is deployed in the dyeing liquor of (being impregnated into) staining trough as described in the claim 4.
(invention effect)
In the manufacture method of the described polarizing film of the present invention of claim 1, according to the constitutive characteristic of the high humidity low temperature temperature wind heating/humidification before the PVA film dyeing of swelling, monomer transmissivity, degree of polarization, the intersection degree (vertical transmissivity) that then can confirm the Polarizer of representing the polarizing film optical characteristics obtain further to improve.This type of improvement is swelling the water at first heating by high humidity low temperature temperature wind and the water vaporization that remains in after the swelling in whole bubble blank parts of the bubble blank part that comprises PVA film central interior portion, and utilize humidification to make the vapor permeation of Wen Fengzhong to whole bubble blank parts, all the bubble blank part becomes the state that almost is full of water vapor, then, cooling by the contact dyeing liquor, make the water vapour that is filled in whole bubble blank parts condensing, all the bubble blank part becomes low-pressure state, so dyeing liquor is attracted in whole bubble blank parts of the bubble blank part that comprises central interior portion, the result is a further homogenising of dyeing integral body.
And, in the manufacture method of the described polarizing film of the present invention of claim 2, according to after passing through the high humidity low temperature temperature wind heating of PVA film, humidification, the formation that dyes continuously immediately, then particularly the PVA film does not contact extraneous air, therefore can prevent to contact extraneous air and cause water vapor loss, with infiltration, the full state reduction thereupon of suitable water vapor, so can carry out really condensing by the water vapor of dyeing liquor cooling, dyeing liquor permeates, even dyeingization.
In addition, manufacturing installation according to claim 3 and 4 described polarizing films of the present invention, high humidity low temperature temperature wind heating/humidifier is set between swelling groove and staining trough, by the additional structure of this compactness, and can carry out the claim 1 of more level dyeing and the manufacture method of 2 polarizing films of putting down in writing respectively really.
Description of drawings
Fig. 1 is the pith skeleton diagram of preferred implementation of the manufacturing installation of polarizing film of the present invention.
Label declaration
10 PVA films
11 swelling grooves
12 swelling water
13 high humidity low temperature temperature wind heating/humidifiers
14 staining troughs
15 dyeing liquors
Embodiment
Below be (Fig. 1) with reference to the accompanying drawings, the manufacture method of the polarizing film that is relevant to this invention and the preferred implementation of device are described.
Fig. 1 is that the pith of preferred implementation of the manufacturing installation of polarizing film of the present invention slightly shows, illustrated device is to be made of following structure: be immersed in state in the dyeing liquor 15 in the staining trough 14 with the output end of PVA film 10, high humidity low temperature temperature wind heating/humidifier 13 is arranged between swelling groove 11 and the staining trough 14.
In this graphic display unit, the PVA film 10 of 12 swellings of swelling water in the swelling groove 11 is in high humidity low temperature temperature wind heating/humidifier 13, contact high humidity low temperature temperature wind, and be heated, humidification, in inner each bubble blank part, become preferably be full of the water vapor state after, do not contact extraneous air and directly insert in the dyeing liquor 15 of staining trough 14, cooling, by following the water vapor in this each bubble blank part condensing, low pressureization in each bubble blank part, dyeing liquor 15 is attracted and infiltrates into central interior portion, and can become the more colored state of homogenising.
Herein, so-called high temperature low temperature temperature wind generally is meant according to the tension force of PVA film 10 or transporting velocity etc., the warm wind that can use humidity 60～80%, temperature (to be preferably 40～60 ℃) below 100 ℃, and, dyeing liquor temperature in the staining trough 14 can be set at lower than the temperature of high humidity low temperature temperature wind, for example 30～40 ℃.
The manufacture method of the polarizing film of this invention and device can utilize other variety of ways to implement, but not are defined in aforesaid way.
Embodiment
Roughly possess the swelling groove is arranged (water temperature: 30 ℃) and high humidity low temperature temperature wind heating/humidifier as Fig. 1 slightly showed; and behind the staining trough that contains iodine class dyeing liquor (liquid temperature: 35 ℃), dispose extension slot; the coloring agent fixing bath; in the manufacturing installation of the polarizing film of drying device; carry wide 1100mm with 1.5m/min speed; the PVA film of thick 80 μ; carry out swelling simultaneously; high humidity low temperature hot blast heating/humidification; dyeing; extend; the coloring agent photographic fixing; dry processing; make the multi-disc polarizing film; for the Polarizer that forms at its two sides applying diaphragm; measure the monomer transmissivity; degree of polarization; the intersection degree; get its mean value respectively, be about 43.5%; about 99.98%; about 0.01%.
Comparative example
Except that removing high humidity low-temperature heat/humidifier, for use with embodiment the same terms under the formed Polarizer of multi-disc polarizing film made, measure monomer transmissivity, degree of polarization, intersection degree, its mean value is respectively about 42.3%, about 99.95%, about 0.03%.
Claims (4)
1. the manufacture method of a polarizing film is made of the operation of polyvinyl alcohol film being carried out swelling, dyeing, extension, it is characterized by, after polyvinyl alcohol film is carried out swelling, dyeing before, by high humidity low temperature temperature wind heat, humidification.
2. the manufacture method of polarizing film as claimed in claim 1 wherein, behind the heating of passing through high humidity low temperature temperature wind, humidification, dyes immediately continuously.
3. the manufacturing installation of a polarizing film possesses swelling groove, staining trough, extension slot, it is characterized by, and is provided with high humidity low temperature temperature wind heating/humidifier between swelling groove and staining trough.
4. the manufacturing installation of polarizing film as claimed in claim 3 wherein, is deployed the film output terminal of high humidity low temperature temperature wind heating/humidifier in the dyeing liquor of staining trough.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005070359A JP2006251588A (en) | 2005-03-14 | 2005-03-14 | Method and apparatus for manufacturing polarizing film |
| JP070359/2005 | 2005-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101061402A true CN101061402A (en) | 2007-10-24 |
Family
ID=36991543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800012106A Pending CN101061402A (en) | 2005-03-14 | 2006-03-08 | Method and apparatus for manufacturing polarizing film |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2006251588A (en) |
| KR (1) | KR20070119002A (en) |
| CN (1) | CN101061402A (en) |
| TW (1) | TW200702746A (en) |
| WO (1) | WO2006098195A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388997A (en) * | 2020-04-17 | 2021-02-23 | 住华科技股份有限公司 | System for manufacturing polarizing film, method for manufacturing polarizing film, and polarizing film manufactured thereby |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7073058B2 (en) * | 2017-07-31 | 2022-05-23 | 住友化学株式会社 | Optical film manufacturing equipment and manufacturing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06281816A (en) * | 1993-03-25 | 1994-10-07 | Kuraray Co Ltd | Production of polarizing film |
| JP4362211B2 (en) * | 2000-06-28 | 2009-11-11 | 株式会社クラレ | Manufacturing method of polarizing film |
| JP3986943B2 (en) * | 2002-11-08 | 2007-10-03 | 株式会社クラレ | Polyvinyl alcohol film |
-
2005
- 2005-03-14 JP JP2005070359A patent/JP2006251588A/en active Pending
-
2006
- 2006-03-08 CN CNA2006800012106A patent/CN101061402A/en active Pending
- 2006-03-08 KR KR1020077007683A patent/KR20070119002A/en not_active Application Discontinuation
- 2006-03-08 WO PCT/JP2006/304438 patent/WO2006098195A1/en active Application Filing
- 2006-03-13 TW TW095108371A patent/TW200702746A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112388997A (en) * | 2020-04-17 | 2021-02-23 | 住华科技股份有限公司 | System for manufacturing polarizing film, method for manufacturing polarizing film, and polarizing film manufactured thereby |
| CN112388997B (en) * | 2020-04-17 | 2022-12-23 | 住华科技股份有限公司 | System for manufacturing polarizing film, method for manufacturing polarizing film, and polarizing film manufactured thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006098195A1 (en) | 2006-09-21 |
| KR20070119002A (en) | 2007-12-18 |
| JP2006251588A (en) | 2006-09-21 |
| TW200702746A (en) | 2007-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |