CN114325913A - Method for adjusting poor warping of polaroid - Google Patents
Method for adjusting poor warping of polaroid Download PDFInfo
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- CN114325913A CN114325913A CN202011055314.3A CN202011055314A CN114325913A CN 114325913 A CN114325913 A CN 114325913A CN 202011055314 A CN202011055314 A CN 202011055314A CN 114325913 A CN114325913 A CN 114325913A
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- protective film
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Abstract
The invention discloses a method for adjusting poor warping of a polarizer, wherein the polarizer consists of a protective film and a polarizer body, and the polarizer body consists of an upper TAC (TAC), a polarizing sublayer and a lower TAC; the protective film is attached to the polarizer body through an attaching mechanism; the laminating mechanism comprises a driving roller and a driven roller which are tangent; the polaroid body directly enters the laminating mechanism, the protective film enters the laminating mechanism after being unfolded by the plane unfolding wheel, an included angle is formed between the protective film and the polaroid body before entering the laminating mechanism, the width direction warping of the polaroid is adjusted, and the included angle is the sticking-in angle of the protective film; the protective film is attached to the polarizer body to form a polarizer, the polarizer bypasses the adjusting wheel, and the lowest point of the adjusting wheel is flush with the lowest point of the driving roller initially; the adjusting wheel moves upwards or downwards, so that the warping of the length extending direction of the polaroid is adjusted.
Description
Technical Field
The invention relates to a method for adjusting poor warping of a polarizer, and belongs to the technical field of polarizer processing.
Background
The polaroid is an optical film compounded by multiple layers of high molecular materials, and the liquid crystal display is tightly attached to liquid crystal glass by two polaroids to form a liquid crystal panel.
In the production process of the polarizer, due to the water absorption, heat shrinkage, tensile ductility and thickness difference of the upper TAC material and the lower TAC material, the warpage of the polarizer body after the polarizer is attached and dried is difficult to control, the overall warpage of the polarizer after the release film is attached is poor, the warpage condition of the polarizer body determines the warpage of the finished polarizer, and the large-size panel and the vehicle-mounted panel are different in required material size, so that the process adjustment is greatly limited.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a method for adjusting poor warping of a polarizer.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for adjusting poor warping of a polarizer comprises the steps that the polarizer consists of a protective film and a polarizer body, wherein the polarizer body consists of an upper TAC (TAC), a polarizing sublayer and a lower TAC;
the protective film is attached to the polarizer body through an attaching mechanism; the laminating mechanism comprises a driving roller and a driven roller which are tangent;
the polaroid body directly enters the laminating mechanism, the protective film enters the laminating mechanism after being unfolded by the plane unfolding wheel, an included angle is formed between the protective film and the polaroid body before entering the laminating mechanism, the width direction warping of the polaroid is adjusted, and the included angle is the sticking-in angle of the protective film; the protective film is attached to the polarizer body to form a polarizer, the polarizer bypasses the adjusting wheel, and the lowest point of the adjusting wheel is flush with the lowest point of the driving roller initially; the adjusting wheel moves upwards or downwards, so that the warping of the length extending direction of the polaroid is adjusted.
Furthermore, the surface of the plane unfolding wheel is provided with an anti-static silica gel strip.
Further, the unfolding angle theta of the plane unfolding wheel is 0-15 degrees.
Further, the sticking angle of the protective film is 45 degrees.
Further, the upward movement distance range of the adjusting wheel is 0-500 mm.
Further, the distance range that the regulating wheel moved downwards is 0-500 mm.
Further, the driving roller is made of rigid materials, and the driven roller is made of rubber materials.
Further, the central shaft of the adjusting wheel is driven by a motor to move upwards or downwards along the sliding rail in the vertical direction.
Furthermore, the horizontal distance between the central axis of the adjusting wheel and the central axis of the driving roller is 300-500 mm.
Has the advantages that: the invention improves the width direction warping of the polaroid through the plane unfolding wheel, adjusts the warping of the length extending direction of the polaroid through the up-and-down movement of the adjusting wheel, and integrally improves the warping condition of the polaroid so as to meet the delivery quality requirement of finished products.
Drawings
FIG. 1 is a schematic diagram showing the positional relationship among an adjustment wheel, a driving roller, a driven roller and a plane deployment wheel according to the present invention;
FIG. 2 is a schematic view of the deployment angle of the planar deployment wheel;
FIG. 3 is a schematic view of a two-sided warp mode;
FIG. 4 is a schematic view of a warpage measurement sample;
fig. 5 shows the four corners of the measurement sample point with the protective film facing upwards: angle 1-angle 4;
FIG. 6 shows the four corners of the measurement sample site with the protective film facing down: angle 5-angle 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The method for adjusting the poor warping of the polaroid comprises a protective film and a polaroid body, wherein the polaroid body comprises an upper TAC (polyvinyl acetate), a polarizing sublayer and a lower TAC (polyvinyl acetate). The protection film is laminated through laminating mechanism with the polaroid body, laminating mechanism includes tangent initiative gyro wheel and driven roller, and the initiative gyro wheel is the rigidity material, and driven roller is the rubber material.
As shown in fig. 1, the polarizer body directly enters the attaching mechanism, the protective film enters the attaching mechanism after being unfolded by the plane unfolding wheel, an included angle is formed between the protective film and the polarizer body before entering the attaching mechanism, the warping in the width direction of the polarizer is adjusted to be poor, and the included angle is an attaching angle of the protective film.
The surface of the plane unfolding wheel is provided with an antistatic silica gel strip. As shown in FIG. 2, the spreading angle theta of the plane spreading wheel is 0-15 degrees, and the sticking angle of the protective film is 45 degrees.
The protective film is attached to the polaroid body to form a polaroid, the polaroid bypasses the adjusting wheel, the lowest point of the adjusting wheel is flush with the lowest point of the driving roller initially, and the horizontal distance between the central shaft of the adjusting wheel and the central shaft of the driving roller is 300-500 mm; the adjusting wheel moves upwards or downwards, so that poor warping in the extending direction of the polaroid is adjusted.
The distance range of upward movement of the adjusting wheel is 0-500 mm, and the distance range of downward movement of the adjusting wheel is 0-500 mm. The center shaft of the adjusting wheel is driven by a motor and moves upwards or downwards along a slide rail in the vertical direction, and a correcting measuring scale is arranged beside the slide rail and used for recording the position of the adjusting wheel.
The warpage adjusting effect is as follows:
firstly, by adopting a conventional method, the protective film and the polarizer body are overlapped in parallel and enter a laminating mechanism for laminating to form the polarizer, the warpage measurement sampling points are shown in fig. 4-6, and the warpage data of the polarizer is shown in the following table 1:
TABLE 1 Polaroid warpage data not conditioned by the method of the invention
Wherein, the keeping refers to that the protective film is upward to measure, the keeping refers to that the protective film is downward to measure, MD represents the length extension direction of the polarizer, and TD represents the width direction of the polarizer; as shown in FIG. 4, DS indicates the sampling measurement location is on the machine drive side, MS indicates the sampling measurement location is in the middle of the machine, and OS indicates the sampling measurement location is on the human operator side.
And (3) measuring the warping data: as shown in fig. 3, the value H in the measurement map is the warp data, the warp value measured with the protective film facing upward is 0 or a positive value, and the warp value measured with the protective film facing downward is 0 or a negative value.
As can be seen from the data in Table 1, the negative warpage of the polarizer produced by the conventional process is out of specification according to the card control standard that the warpage value of the finished polarizer is-5-10.
After the protective film and the attached polarizer are adjusted by the method of the invention, the warping data of the polarizer are shown in the following table 2, nine groups of experiments are performed according to the spreading angles of the different plane spreading wheels and the moving distances of the adjusting wheels, and the warping measurement sampling points are shown in fig. 4-6.
TABLE 2 warping data of polarizers adjusted by the method of the present invention
The moving distance of the adjusting wheel is 0, which represents that the adjusting wheel is in an initial state, namely the lowest point of the adjusting wheel is flush with the lowest point of the driving roller; the moving distance of the adjusting wheel is a negative value, which represents that the adjusting wheel moves downwards from the initial state; the moving distance of the adjusting wheel is a positive value, which represents that the adjusting wheel moves upwards from the initial state.
As can be seen from table 2, when the spreading angle of the plane spreading wheel is 0 degree, the polarizer has a positive warping superstandard or a negative warping superstandard; and when the polaroid B9, namely the spreading angle of the plane spreading wheel is 10 degrees and the adjusting wheel moves downwards for 250mm, all warping data meet the requirements according to the clamping control standard of warping values of finished polaroids of-5-10.
On the basis of the existing device, no matter the original film is a positive warping superstandard or a negative warping superstandard, the warping of the film can be reduced to meet the quality requirement of finished products through the adjustment of the plane unfolding wheel and the position of the adjusting wheel.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (9)
1. The utility model provides a method for adjusting poor warping of polaroid, the polaroid comprises protection film and polaroid body, the polaroid body comprises last TAC, polarisation sublayer, lower TAC, its characterized in that:
the protective film is attached to the polarizer body through an attaching mechanism; the laminating mechanism comprises a driving roller and a driven roller which are tangent;
the polaroid body directly enters the laminating mechanism, the protective film enters the laminating mechanism after being unfolded by the plane unfolding wheel, an included angle is formed between the protective film and the polaroid body before entering the laminating mechanism, the width direction warping of the polaroid is adjusted, and the included angle is the sticking-in angle of the protective film; the protective film is attached to the polarizer body to form a polarizer, the polarizer bypasses the adjusting wheel, and the lowest point of the adjusting wheel is flush with the lowest point of the driving roller initially; the adjusting wheel moves upwards or downwards, so that the warping of the length extending direction of the polaroid is adjusted.
2. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: and the surface of the plane unfolding wheel is provided with an antistatic silica gel strip.
3. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the unfolding angle theta of the plane unfolding wheel is 0-15 degrees.
4. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the sticking angle of the protective film is 45 degrees.
5. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the upward movement distance range of the adjusting wheel is 0-500 mm.
6. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the distance range of the downward movement of the adjusting wheel is 0-500 mm.
7. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the driving roller is made of rigid materials, and the driven roller is made of rubber materials.
8. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the central shaft of the adjusting wheel is driven by a motor to move upwards or downwards along the slide rail in the vertical direction.
9. The method for adjusting the warpage failure of a polarizer according to claim 1, wherein: the horizontal distance between the central axis of the adjusting wheel and the central axis of the driving roller is 300-500 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055314.3A CN114325913A (en) | 2020-09-30 | 2020-09-30 | Method for adjusting poor warping of polaroid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055314.3A CN114325913A (en) | 2020-09-30 | 2020-09-30 | Method for adjusting poor warping of polaroid |
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| CN114325913A true CN114325913A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011055314.3A Pending CN114325913A (en) | 2020-09-30 | 2020-09-30 | Method for adjusting poor warping of polaroid |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007062321A (en) * | 2005-09-02 | 2007-03-15 | Jptec Kk | Laminated film pasting device |
| CN104937459A (en) * | 2013-01-28 | 2015-09-23 | 住友化学株式会社 | Process for manufacturing polarizing film |
| TW201703980A (en) * | 2015-07-20 | 2017-02-01 | 住華科技股份有限公司 | Device and method of improving curl of optical film |
| JP2019061031A (en) * | 2017-09-26 | 2019-04-18 | 住友化学株式会社 | Optical film manufacturing method and manufacturing apparatus |
| CN209496162U (en) * | 2018-12-25 | 2019-10-15 | 昆山之奇美材料科技有限公司 | A kind of automatic remover of polarization board protective film bubble |
-
2020
- 2020-09-30 CN CN202011055314.3A patent/CN114325913A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007062321A (en) * | 2005-09-02 | 2007-03-15 | Jptec Kk | Laminated film pasting device |
| CN104937459A (en) * | 2013-01-28 | 2015-09-23 | 住友化学株式会社 | Process for manufacturing polarizing film |
| TW201703980A (en) * | 2015-07-20 | 2017-02-01 | 住華科技股份有限公司 | Device and method of improving curl of optical film |
| JP2019061031A (en) * | 2017-09-26 | 2019-04-18 | 住友化学株式会社 | Optical film manufacturing method and manufacturing apparatus |
| CN209496162U (en) * | 2018-12-25 | 2019-10-15 | 昆山之奇美材料科技有限公司 | A kind of automatic remover of polarization board protective film bubble |
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