TWI696004B - Floating body and system for manufacturing polarizer film by applying the same and method for manufacturing polarizer film by applying the same - Google Patents

Abstract

A floating body includes a shell structure having a capacity inside; and a magnet structure disposed on the shell structure. The shell structure includes a top and a bottom. The top, the bottom and a geometric center of the shell structure are connected to form a first central line extending along a first direction. The shell structure has a first height and the magnet structure has a second structure in a perpendicular projection to the first central line. A ratio of the second height to the first height is 1:10 to 1:20。

Description

Floating body and system for manufacturing polarizing film using the same and system using the same Method of making polarizing film

The invention relates to a floating body and a system for manufacturing a polarizing film using the same, and a method for manufacturing a polarizing film using the same, and particularly relates to a floating body including a magnet structure and a system for manufacturing a polarizing film using the same The method of manufacturing the polarizing film.

In recent years, as the demand for liquid crystal displays has gradually increased, the demand for optical elements of polarizing plates used in liquid crystal displays has also gradually increased. The polarizing plate is usually formed by attaching a protective film to the polarizing film, wherein the polarizing film can be obtained by passing a flexible polarizing film precursor through a plurality of processing tanks through a roll-to-roll process.

However, in the process of manufacturing the polarizing film, the chemical liquid in the treatment tank may be evapotranspiration and the concentration of the chemical liquid needs to be readjusted, or the chemical liquid and the air are oxidized The obtained polarizing film has a bad influence. Therefore, there is still an urgent need to solve the above-mentioned problems in order to improve the quality of the polarizing film.

The invention provides a floating body and a system for manufacturing a polarizing film using the same and a method for manufacturing a polarizing film using the same, in particular to provide a floating body including a magnet structure and a system for manufacturing a polarizing film using the same and a method for manufacturing polarized light using the same Film method to improve the quality of the polarizing film and the polarizing plate formed therefrom.

According to some embodiments, a floating body is provided. The floating body includes a shell structure and a magnet structure. The housing structure has an accommodating space inside. The shell structure includes a top and a bottom, and a geometric center of the top, the bottom and the shell structure are connected to form a first center section line extending along a first direction. The magnet structure is located on the shell structure. In the vertical projection on the first central cross-section line, the shell structure has a first height, and the magnet structure has a second height, wherein the ratio of the second height to the first height is between 1:10 and 1:20.

According to some embodiments, a system for manufacturing a polarizing film is provided. The system includes a processing tank, a chemical solution, a plurality of floating bodies, and a polarizing film precursor. The chemical solution is set in the treatment tank. The floating body is set in the treatment tank and floats on the chemical liquid. The polarizing film precursor is used to react with the chemical liquid.

According to some embodiments, a method for manufacturing a polarizing film is provided. The method includes placing a plurality of floating bodies in at least one processing tank among the plurality of processing tanks; and sequentially passing a polarizing film precursor through the processing tank to form a polarizing film.

In order to have a better understanding of the above and other aspects of the present invention, the following examples are specifically described in conjunction with the accompanying drawings as follows:

10: precursor of polarizing film

10’: Polarizing film

20: Treatment tank

21: Bulking tank

22: Dyeing tank

23: Crosslinking groove

24: Complementary color slot

25: Wash tank

26: Drying furnace

30: Roller

50, 150, 250, 350, 450: floating body

40: liquid medicine

40a: liquid level

50, 52, 150, 250, 350, 450, 550, 650: floating body

100, 100’: System

151, 251, 351, 451, 551, 651: shell structure

151a: top

151b: bottom

151c: accommodating space

151i: inner surface

151p: opening

151s, 251s, 551s: outer surface

153, 253, 353, 453, 553, 653: magnet structure

153a: top edge

153b: bottom edge

155: Seal

157: filler

200: Method

551a, 651a: upper surface

651s: side

2531~2536, 4534~4536: magnet block

C: geometric center

D ₁₅₁ , D ₁₅₃ , D ₂₅₁ , D ₂₅₃ , D ₃₅₁ , D ₃₅₃ , D ₄₅₁ , D ₄₅₃ , D ₅₅₁ , D ₅₅₃ , D ₆₅₁ , D ₆₅₃ : height

D _153a , D _153b : distance

L ₁ ~L ₁₂ : connection

L _C1 : first center section line

L _C2 : Second center section line

T ₁₅₁ , T ₄₅₁ : thickness

W ₁ , W ₂ : width

α: included angle

FIG. 1A is a side view of a floating body according to an embodiment of the invention.

FIG. 1B is a cross-sectional view along the second center cross-sectional line of FIG. 1A.

FIG. 1C is a bottom view of a floating body according to an embodiment of the invention.

FIG. 2A is a side view of a floating body according to another embodiment of the invention.

FIG. 2B is a top view of a floating body according to another embodiment of the invention.

Figure 3 shows a side view of a floating body according to yet another embodiment of the invention.

FIG. 4A shows a side view of a floating body according to yet another embodiment of the invention.

FIG. 4B illustrates a cross-sectional view along the second center cross-sectional line of FIG. 4A.

FIG. 5 shows a perspective view of a floating body according to yet another embodiment of the invention.

Figure 6 shows a side view of a floating body according to yet another embodiment of the invention.

FIG. 7A is a side view of a system for manufacturing a polarizing film using a floating body according to yet another embodiment of the present invention.

FIG. 7B is a top view of a system for manufacturing a polarizing film using a floating body according to another embodiment of the invention.

8 is a top view of a system for manufacturing a polarizing film using a floating body according to yet another embodiment of the present invention.

9 is a side view of a method for manufacturing a polarizing film using a floating body according to another embodiment of the present invention.

The following is a detailed description of various embodiments. The embodiments are only used as examples and do not limit the scope of the disclosure. The parts of the drawings in the embodiments are repeated. The correlation between different embodiments can still be implemented using other features, components, methods, and parameters. The embodiments are presented only to illustrate the technical features of the present disclosure, not to limit the scope of the patent application of the present disclosure. Those with ordinary knowledge in this technical field will be able to make equal modifications and changes according to the description of the following description without departing from the spirit of the disclosure

The invention provides a floating body applied to the manufacture of polarizing films. During the preparation of the polarizing film, some processes, such as the extension process or the cross-linking process, have high temperatures, and the moisture in the chemical liquid in the treatment tank is easily volatile due to high temperature, so it is necessary to continuously replenish the moisture and readjust the chemical liquid Of concentration. In addition, some treatment tanks, such as cross-linking tanks and complementary color tanks, contain iodine ions. The large-area treatment tanks easily react with air to oxidize iodide ions to triiodide ions. for example, cross-linked and groove complementary color light irradiated by the chemical liquid tank, so that the iodide ion (I ^-) to generate an oxidation reaction triiodide (I ^3-), which can adversely to the quality of the manufactured polarizing film The influence is, for example, an influence on the optical properties of the polarizing film. Therefore, by placing the floating body of the present invention on the treatment tank, the floating body can form a shield on the surface of the chemical liquid, which can not only reduce the water evaporation of the chemical liquid, reduce the contact area between the chemical liquid and the air, but also reduce the chemical liquid When exposed to light, the optical properties of the polarizing film can be improved and the quality of the polarizing film can be improved.

In an embodiment of the present invention, the floating body may be a sphere, a cube, a cuboid, a cylinder, a polygonal cylinder, or any shape, and the polygonal cylinder is preferably 3-6 polygons.

FIG. 1A shows a side view of a floating body 150 according to an embodiment of the invention, showing a plane formed by the X axis and the Z axis. FIG. 1B shows a cross-sectional view along the second center cross-sectional line L _C2 in FIG. 1A, and shows a plane formed by the X axis and the Y axis. FIG. 1C is a bottom view of the floating body 150 according to an embodiment of the present invention, showing the plane formed by the X axis and the Y axis. The X axis, Y axis and Z axis can be perpendicular to each other.

Please refer to FIGS. 1A, 1B and 1C at the same time. In this embodiment, the floating body 150 is a spherical body. The floating body 150 includes a housing structure 151, a magnet structure 153, and a sealing member 155.

1A and 1B, the housing structure 151 includes an outer surface 151s and an inner surface 151i, and the housing structure 151 has an accommodating space 151c inside. That is, the inner surface 151i of the housing structure 151 corresponds to the accommodating space 151c. The housing structure 151 includes a top 151a and a bottom 151b, the top 151a is opposite to the bottom 151b. Wherein, the geometric centers C of the top 151a, the bottom 151b and the housing structure 151 can be connected to each other to form a first center section line L _C1 extending along a first direction (such as the Z-axis direction). L _{C2 of} the second center section line is perpendicular to the first center section line L _C1 , extends in the second direction (for example, the X-axis direction), and passes through the geometric center C.

The diameter of the shell structure 151 (for example, the first height D ₁₅₁ shown in FIG. 1A) may be between 5 and 10 cm. If the diameter of the shell structure 151 is smaller, the arrangement between the plurality of floating bodies 150 can be closer, and the area of the liquid surface exposed by the gap between the floating bodies 150 can be smaller, so that the floating bodies 150 cover The effect of the liquid medicine can be better. The material of the shell structure 151 may be an acid-resistant or alkaline-resistant material, and the density is approximately equal to the density of the chemical solution in the treatment tank (for example, equal to 1). For example, the material of the shell structure 151 is polyethylene terephthalate (PET), high density polyethylene (HDPE), low density polyethylene (LDPE), polyvinyl chloride (polyvinyl chloride, PVC), polypropylene (polypropylene, PP), polystyrene (PS), polycarbonate (polycarbonate, PC), or melamine formaldehyde resin (MF). In one embodiment, the thickness T ₁₅₁ of the shell structure 151 is between 2-10 mm, and the preferred range is 3-5 mm. In this embodiment, the housing structure 151 has a uniform thickness. However, the invention is not limited to this. For example, the thickness of the top 151a and the adjacent portion of the shell structure 151 may be smaller than the thickness of the bottom 151b and the adjacent portion of the shell structure 151, so that the mass of the bottom 151b of the shell structure 151 is greater than the top 151a of the shell structure 151. The bottom 151b of the structure 151 can be maintained in a direction facing the bottom of the treatment tank, so that the direction of each floating body 150 is the same, forming a structure similar to a tumbler, which is beneficial to the adsorption between the magnet structures 153.

The magnet structure 153 may be located on the housing structure 151, for example, on the outer surface 151s of the housing structure 151. In this embodiment, the magnet structure 153 is a strip structure, and continuously surrounds the housing structure 151. However, the present invention is not limited to this, and the magnet structure 153 may have other suitable configurations. For example, a plurality of strip-shaped magnet structures 153 may be separated from each other and surround the housing structure 151 in a discontinuous manner. The magnet structure 153 can be fixed on the housing structure 151 by an adhesive. The method of fixing the magnet structure 153 to the structure 151 is not limited to this, as long as the method can fix the magnet structure 153 to the housing structure 151 well. The magnet structure 153 may protrude or be embedded on the housing structure 151. The magnet structure 153 is formed by a permanent magnet, for example, and can attract the adjacent floating bodies 150 together by magnetic force. The preferred magnetic force range is between 800 and 2000 gauss. When the shell structure 151 is spherical, in order to achieve the densest packing between the multiple shell structures 151, the magnet structure 153 may be disposed corresponding to the geometric center C of the shell structure 151 on a horizontal plane (for example, X The plane formed by the axis and the Y axis) surrounds the geometric center C, so that the multiple floating bodies 150 can be closely attracted together by the magnet structure 153 to form a shield on the surface of the chemical liquid. For example, the magnet structure 153 includes a top edge 153a and a bottom edge 153b. The top edge 153a corresponds to the top 151a of the housing structure 151, and the bottom edge 153b corresponds to the bottom 151b of the housing structure 151. Wherein, in a projection perpendicular to the first center section line L _C, the top edge of the top of structure 151 and the housing 153a between the distance D is equal to the distance between 151a _153a 153b and the bottom 151b of structure 151 of the bottom edge of the housing D _153b . In one embodiment, the housing structure 151 has a first height D ₁₅₁ and the magnet structure 153 has a second height D ₁₅₃ , which is projected vertically on the first center cross-sectional line L _C , wherein the second height D ₁₅₃ is The ratio of a height D ₁₅₁ is between 1:10 and 1:20. By designing the position and size relationship between the shell structure 151 and the magnet structure 153 of the floating body 150, the mutual absorption between the floating bodies 150 can reach the maximum density, and the chemical liquid of the floating body 150 in the treatment tank can be fixed Coverage.

1A and 1C, the housing structure 151 includes an opening 151p corresponding to the bottom 151b. The sealing member 155 is disposed at the position of the opening 151p, and closes the opening 151p, so that the accommodating space 151c forms a closed space. The material of the sealing member 155 may be an acid or alkali resistant material, and the density may be greater than 1. On the vertical projection on the second center section line L _C2 , the seal 155 has a first width W ₁ , the housing structure has a second width W ₂ , and the ratio of the first width W ₁ to the second width W ₂ is 1:4. The sealing member 155 is disposed on the bottom 151b of the shell structure 151 so that the plurality of floating bodies 150 can be unified with the sealing member 155 facing down, that is, facing the bottom of the treatment tank, floating on the chemical liquid, and will not be dumped at will Or flip. The sealing member 155 can be disposed in the opening 151p by rotational engagement. In this embodiment, the sealing member 155 is, for example, a screw cap. However, the present invention is not limited to this. The sealing member 155 may be fixed in the opening 151p by other means, such as a tenon or other types of mechanisms, as long as the accommodating space 151c can be formed into a closed space. can.

Please refer to FIG. 1A, the accommodating space 151c may have a filler 157. The density of the filler 157 may be equal to or slightly greater than the density of the chemical liquid in the treatment tank into which the floating body 150 is put. In this embodiment, the filler 157 is a liquid with a density greater than or equal to 1, such as pure water. The volume percentage of the volume of the filler 157 to the total volume of the accommodating space 151c may be between 40% and 50%. By disposing the filler 157 in the accommodating space 151c, a part of the floating body 150, for example, 1/3 to 1/2 of the total volume of the floating body 150 can be sunk into the liquid medicine, so it can be avoided due to The floating body 150 is too light and is affected by the turbulence on the surface of the chemical liquid.

FIG. 2A shows a side view of the floating body 250 according to another embodiment of the present invention, showing the plane formed by the X axis and the Z axis. FIG. 2B is a top view of the floating body 250 according to another embodiment of the present invention, showing the plane formed by the X axis and the Y axis. The floating body 250 has a similar structure to the floating body 150 shown in FIGS. 1A to 1C. The difference lies in the design of the magnet structure 253, and the rest is repeated here.

Please refer to FIGS. 2A and 2B at the same time. The magnet structure 253 is formed on the outer surface 251s of the housing structure 251 and includes a plurality of magnet blocks 2531~2536. The magnet blocks 2531~2536 are separated from each other (for example, at a fixed interval). Opening and surrounding the housing structure 151, for example, surrounds the housing structure 251 on a plane passing through the second center cross-sectional line L _C2 (for example, the plane formed by the X axis and the Y axis). The magnet blocks 2531~2536 can form a plurality of lines L ₁ ~L ₆ with the geometric center C, respectively, and an angle α is formed between adjacent lines (for example, between lines L ₁ and L ₂ ). It is 60°. In an embodiment, the housing structure 251 has a first height D ₂₅₁ and the magnet structure 253 has a second height D ₂₅₃ when projected vertically on the first center cross-sectional line L _C , wherein the second height D ₂₅₃ is The ratio of a height D ₂₅₁ is between 1:10 and 1:20. By designing the position and size relationship between the shell structure 251 and the magnet structure 253 of the floating body 250, the mutual absorption between the floating bodies 250 can reach the maximum density, and can fix the chemical liquid of the floating body 250 in the treatment tank Coverage. In this embodiment, the shapes of the magnet blocks 2531 to 2536 are circular, and the number of magnet blocks is exemplarily shown as 6, but the invention is not limited thereto. The magnet block can also be square or any other shape, and the number can be less than 6 or greater than 6. The seal 155 is provided at the bottom of the housing structure 251.

FIG. 3 shows a side view of a floating body 350 according to yet another embodiment of the invention. The floating body 350 has a similar structure to the floating body 250 shown in FIGS. 2A to 2B. The difference lies in the shapes of the housing structure 351 and the magnet structure 353. The rest is repeated and will not be described in detail here.

Please refer to FIG. 3, the floating body 350 is a cube, and the sealing member 155 is disposed at the bottom of the housing structure 351. The magnet structure 353 includes a plurality of magnet blocks, each of which is rectangular, and may have different sizes. However, the present invention is not limited to this, and a plurality of magnet blocks can have the same size. The magnet blocks are spaced apart from each other (for example, at a fixed interval) and surround the housing structure 351, for example, on a plane passing through the second center section line L _C2 (for example, the plane formed by the X axis and the Y axis) Surround the housing structure 351. In this embodiment, only one magnet block is provided at each central side of the cubic shell structure 351. In an embodiment, the housing structure 351 has a first height D ₃₅₁ and the magnet structure 353 has a second height D ₃₅₃ when projected vertically on the first center cross-sectional line L _C1 , wherein the second height D ₃₅₃ The ratio of a height D ₃₅₁ is between 1:10 and 1:20. By designing the position and size relationship between the shell structure 351 and the magnet structure 353 of the floating body 350, the mutual absorption between the floating bodies 350 can reach the maximum density, and can fix the chemical liquid of the floating body 350 in the treatment tank Coverage.

FIG. 4A shows a side view of a floating body 450 according to yet another embodiment of the present invention, showing the plane formed by the X axis and the Z axis. FIG. 4B shows a cross-sectional view along the second center cross-sectional line L _C2 in FIG. 4A, and shows a plane formed by the X axis and the Y axis. The floating body 450 has a similar structure to the floating body 250 in FIGS. 2A and 2B. The difference is that the thickness of the housing structure 451 and the location of the magnet structure 453 are repeated.

Please refer to FIGS. 4A and 4B at the same time. The magnet structure 453 is formed on the inner surface 450i of the housing structure 451, which corresponds to the accommodating space 451c. The magnet structure 453 includes a plurality of magnet blocks 4531 to 4536. The magnet blocks 4531 to 4536 are spaced apart from each other (for example, at a fixed interval) and surround the housing structure 451, for example, a piece passing through the second center section line L _C2 The housing structure 451 surrounds the plane (for example, the plane formed by the X axis and the Y axis). The thickness of the shell structure 451 may be smaller than the thickness of the shell structure 251, so that between the plurality of floating bodies 450, the magnetic force of the magnet structure 453 can penetrate through the shell structure 451 and attract each other. In an embodiment, the thickness T ₄₅₁ of the shell structure ₄₅₁ is less than the thickness T _{151 of the} shell structure ₁₅₁ , for example, less than or equal to 5 mm. The magnet blocks 4531~4536 can form a plurality of lines L ₇ ~ L ₁₂ with the geometric center C, respectively, and an angle α is formed between adjacent lines (for example, between lines L ₇ and L ₈ ). It is 60°. In an embodiment, the housing structure 451 has a first height D ₄₅₁ and the magnet structure 453 has a second height D ₄₅₃ , which is projected vertically on the first center cross-sectional line L _C1 , wherein the second height D ₄₅₃ is The ratio of a height D ₄₅₁ is between 1:10 and 1:20. Through the design of the position and size relationship between the shell structure 451 and the magnet structure 453 of the floating body 450, the mutual absorption between the floating bodies 450 can reach the maximum density, and the chemical liquid of the floating body 450 in the treatment tank can be fixed Coverage.

FIG. 5 shows a perspective view of a floating body 550 according to yet another embodiment of the invention. The floating body 550 has a similar structure to the floating body 250 of FIGS. 2A to 2B, the difference is the shape of the housing structure 551, and the rest is repeated here and will not be described in detail.

Please refer to FIG. 5, the housing structure 551 is a cylinder, and a sealing member (not shown) is provided at the bottom of the housing structure. On a plane formed by the X axis and the Y axis, the upper surface 551a of the housing structure 551 is circular. The magnet structure 553 includes a plurality of magnet blocks, each of which is circular (may be other shapes). The magnet blocks are spaced apart from each other (for example, at a fixed interval) and surround the housing structure 551, for example, on a plane passing through the second center section line L _C2 (for example, the plane formed by the X axis and the Y axis) Surround the housing structure 551. In an embodiment, the housing structure 551 has a first height D ₅₅₁ and the magnet structure 553 has a second height D ₅₅₃ , which is projected vertically on the first center cross-sectional line L _C1 , wherein the second height D ₅₅₃ The ratio of a height D ₅₅₁ is between 1:10 and 1:20. Through the design of the position and size relationship between the shell structure 551 and the magnet structure 553 of the floating body 550, the mutual absorption between the floating bodies 550 can reach the maximum density, and can fix the chemical liquid of the floating body 550 in the treatment tank Coverage.

FIG. 6 shows a side view of a floating body 650 according to yet another embodiment of the invention. The floating body 650 has a similar structure to the floating body 250 of FIGS. 2A to 2B, and the difference is the shape of the housing structure 651, and the rest is repeated here and will not be described in detail.

Please refer to FIG. 6, the floating body 650 is a hexagonal cylinder, and a sealing member (not shown) is provided on the bottom of the housing structure 651. On the plane formed by the X axis and the Y axis, the upper surface 651a of the housing structure 651 is hexagonal, and is adjacent to six rectangular side surfaces 651s, respectively. The magnet structure 653 can be formed on the outer surface (for example, the side surface 651s), and includes a plurality of magnet blocks. The magnet blocks are spaced apart from each other (for example, at a fixed interval) and surround the housing structure 651, for example, on a plane passing through the second center section line L _C2 (for example, the plane formed by the X axis and the Y axis) Surround the housing structure 651. In this embodiment, each side surface 651s of the housing structure 651 of the hexagonal column is provided with only one magnet block at the center point, and the angle α formed by the adjacent line between the magnet block and the geometric center C is 60°. In an embodiment, the housing structure 651 has a first height D ₆₅₁ and the magnet structure 653 has a second height D ₆₅₃ , which is projected vertically on the first center cross-sectional line L _C1 , wherein the second height D ₆₅₃ is The ratio of a height D ₆₅₁ is between 1:10 and 1:20. By designing the position and size relationship between the shell structure 651 and the magnet structure 653 of the floating body 650, the mutual absorption between the floating bodies 650 can reach the maximum density, and can fix the chemical liquid of the floating body 650 in the treatment tank Coverage.

In some embodiments, when the floating body is a polygon, such as a triangular column, a cube, a rectangular parallelepiped, a pentagonal column, or a hexagonal column, the magnet blocks are respectively disposed at the center points of the sides of the shell structure, then the magnet blocks are adjacent to the geometric center The angle α formed by the line is 60°~120°.

FIG. 7A shows a side view of a system 100 for manufacturing a polarizing film using a floating body 50 according to yet another embodiment of the present invention, showing the plane formed by the X axis and the Z axis. FIG. 7B illustrates a top view of a system 100 for manufacturing a polarizing film using a floating body 50 according to yet another embodiment of the present invention, showing the plane formed by the X axis and the Y axis.

Please refer to FIGS. 7A and 7B at the same time. The system 100 includes a processing tank 20, a chemical solution 40 disposed in the processing tank 20, a plurality of floating bodies 50, and a polarizing film precursor 10. The floating body 50 is, for example, any one of the aforementioned floating bodies 150 to 450 or other similar floating bodies, which is disposed in the treatment tank 20 and floats on the chemical liquid 40. The polarizing film precursor 10 is transported through a plurality of rollers 30 and immersed in the chemical liquid 40 to react with the chemical liquid 40 and continue to advance in the direction of the next processing tank. The chemical solution 40 contains iodine ions, for example, and is used in a cross-linking tank or a complementary color tank. In FIG. 7A, a part of the floating body 50 is sunk into the chemical liquid 40, and a part is exposed on the liquid surface 40a of the chemical liquid 40. In an embodiment, the portion of each floating body 50 sinking into the medicinal liquid 40 has a sinking volume V ₁ , and each floating body 50 has a total volume V ₂ , the sinking volume V ₁ is equal to the total volume V ₂ The ratio (V ₁ /V ₂ ) is between 1/3 and 1/2. Due to the filling 157 in the floating body 50, the floating body can be partially sunk in the chemical liquid 40, which can prevent the floating body 50 from being too light and being affected by the disturbance of the surface of the chemical liquid 40. In FIG. 7B, the total area occupied by the floating body 50 in the chemical liquid 40 is A ₁ , and the total area of the chemical liquid 40 in the processing tank 20 is A ₂ (the total area of the chemical liquid 40 before the floating body 50 has not been put in Area), the coverage area (A ₁ /A ₂ ) of the floating body 50 to the chemical solution 40 is between 60% and 85%, preferably 75% to 78%, in order to avoid touching the polarizing film precursor that is subsequently placed Thing. Since the floating body 50 of the present invention can cover the surface of the chemical liquid 40 and has a large coverage area, compared with the comparative example without the floating body, it can not only reduce the water evaporation of the chemical liquid 40, but also reduce the The contact area of air can also reduce the exposure of the medical solution 40 to light, so it can improve the optical properties of the finished polarizing film and enhance the quality of the polarizing film. In addition, since the plurality of floating bodies 50 are attracted to each other by the magnet structure, if the polarizing film precursor soaked in the chemical solution 40 needs to be urgently processed during the manufacturing process, only the floating body 50 needs to be dialed Just turn it on, and you can immediately process the polarizing film precursor in a short time.

Fig. 8 shows a top view of a system 100' for manufacturing a polarizing film using a floating body 52 according to yet another embodiment of the present invention, showing the plane formed by the X axis and the Y axis. The configuration of the system 100' is similar to that of the system 100, except that the floating body 52 is specifically shown as a hexagonal cylinder, and the rest is repeated here and will not be described in detail.

Referring to FIG. 8, the floating bodies 52 of the hexagonal cylinders are attracted to each other by a magnet structure, and cover the surface of the drug solution 40 in a large area. Compared with the embodiment shown in FIG. 7B, since the floating body 52 in this embodiment is a hexagonal column, a closer arrangement can be formed between the floating bodies 52, and the exposed area of the chemical liquid 40 can be smaller. That is, the coverage area of the floating body 52 to the chemical liquid 40 may be larger than the coverage area of the floating body 50 to the chemical liquid 40.

FIG. 9 is a side view of a method 200 for manufacturing a polarizing film 10' using a floating body 50 according to yet another embodiment of the present invention.

Referring to FIG. 9, the method 200 for manufacturing the polarizing film 10' using the floating body 50 includes the following steps. First, a plurality of treatment tanks are provided. In an embodiment, the treatment tank may include at least one swelling tank 21, dyeing tank 22, cross-linking tank 23, complementary color tank 24, and washing tank 25. The processing tank and processing equipment can be selectively increased, decreased, repeatedly configured, or otherwise adjusted. For example, a complementary color tank 24 can be selectively provided between the cross-linking tank 23 and the washing tank 25.

Next, in the present invention, the plurality of floating bodies 50 of the foregoing embodiments are placed in at least one processing tank among the plurality of processing tanks 21-25. In one embodiment, the floating body 50 can be placed in the processing tank by a robot arm or a manual method.

Finally, a polarizing film precursor 10 is conveyed by a plurality of rollers 30, and passes through the processing tanks and processing equipment in order as indicated by the arrows to form a polarizing film 10'. The polarizing film 10' can convert light from non-polarized light to polarized light, which is formed, for example, by a polyvinyl alcohol (PVA) film that adsorbs and aligns dichroic pigments, or is doped by liquid crystal materials with absorbing dye molecules . Specific examples are provided below for this. It can be understood that these embodiments are not intended to limit the present invention Bright. In addition, the elements, conditions, and features in one embodiment can be advantageously incorporated into another embodiment without further enumeration.

The material of the polarizing film precursor 10 includes polyvinyl alcohol or other suitable materials. For example, the polarizing film precursor 10 may be a polyvinyl alcohol film. Polyvinyl alcohol can be formed by saponifying polyvinyl acetate. According to some embodiments, the degree of saponification of polyvinyl alcohol may be 85-100 mole %. According to some embodiments, the polyvinyl acetate may be a vinyl acetate monomer, or a copolymer of vinyl acetate and vinyl acetate and other copolymers capable of copolymerizing with vinyl acetate, the other Monomers can be unsaturated carboxylic acids (such as acrylic acid, methacrylic acid, ethyl acrylate, propyl n-acrylate, methyl methacrylate), olefins (such as ethylene, propylene, 1-butene, 2-methyl propylene) , Unsaturated sulfonic acids (such as ethyl vinyl ether, methyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether), or vinyl ethers and so on. In some embodiments, the polyvinyl alcohol is modified, such as polyvinylformal modified with aldehydes, polyvinyl acetal, polyvinyl acetaldehyde, polyvinyl butyral, or the like. In some embodiments, the thickness of the polarizing film precursor 10 is about 1 μm to 200 μm.

The polarizing film precursor 10 may be first guided to the swelling tank 21 through the roller 30 to perform a swelling process on the polarizing film precursor 10. The swelling treatment can remove the foreign matter on the surface of the polarizing film precursor 10 and the plasticizer in the polarizing film precursor 10, and contribute to the subsequent dyeing treatment and cross-linking treatment. In some embodiments, the temperature of the swelling treatment is 10°C to 50°C, and the time of the swelling treatment is 5 seconds to 300 seconds.

According to some embodiments, an extended polarizing film precursor may be used 10. According to other embodiments, the polarizing film precursor 10 may be subjected to an extension process in a system for manufacturing a polarizing film. The stretching treatment may be performed when passing through the swelling tank 21, and/or the subsequent dyeing tank 22, and the cross-linking tank 23.

The polarizing film precursor 10 is then guided to the dyeing tank 22 via the roller 30 to perform a dyeing process on the polarizing film precursor 10. The bath in the dye bath 22 contains a dye. As the coloring agent, dichroic pigments or other suitable water-soluble dichromatic dyes can be used. In some embodiments, the stain includes iodine and potassium iodide. For example, the coloring agent may be an aqueous solution containing 0.003 to 0.2 parts by weight of iodine and 3 to 30 parts by weight of potassium iodide. In some embodiments, the temperature of the dyeing process is 10°C to 50°C, and the time of the dyeing process is 10 seconds to 600 seconds. In order to make the dyeing process better, other additives can be included in the bath. For example, in some embodiments, boric acid is additionally added.

The polarizing film precursor 10 is then guided to the crosslinking groove 23 via the roller 30 to perform a crosslinking process on the polarizing film precursor 10. The bath in the cross-linking tank 23 contains a cross-linking agent. Boric acid can be used as a cross-linking agent. The bath liquid in the cross-linking tank 23 may further contain an optical adjusting agent. As the optical modifier, potassium iodide, zinc iodide, or a combination thereof can be used. The hue of the polarizing film can be adjusted by changing the concentration of the optical adjusting agent. In some embodiments, the bath solution is an aqueous solution, which contains 1 to 10 parts by weight of boric acid and 1 to 30 parts by weight of potassium iodide. In some embodiments, the temperature of the cross-linking treatment may be 10°C to 70°C, and the time of the cross-linking treatment is 1 second to 600 seconds.

Optionally, in some embodiments, the polarizing film precursor 10 is then guided to the complementary color groove 24 via the roller 30 to perform a complementary color process on the polarizing film precursor 10. The complementary color processing further adjusts the polarizing film precursor 10 to achieve the desired hue of the polarizing film 10'. The bath liquid in the complementary color tank 24 may have a similar or even the same structure as the bath liquid in the cross-linking tank 23. In some embodiments, the temperature of the complementary color processing is 10°C to 70°C, and the time of the complementary color processing is 1 second to 15 minutes.

Referring again to FIG. 9, the polarizing film precursor 10 is then guided to the washing tank 25 through the roller 30 to perform a washing process on the polarizing film precursor 10. The washing treatment can be performed by soaking in water, spraying with a water jet, or a combination of the foregoing. In some embodiments, the temperature of the washing process is 2°C to 45°C, and the time of the washing process is 2 seconds to 120 seconds.

The washed polarized film precursor 10 may then be guided to a drying furnace 26 via a roller 30 to perform a drying process on the polarized film precursor 10, and the polarized film 10' after the drying process. In some embodiments, the temperature of the drying process is 35°C to 105°C, and the time of the drying process is 10 seconds to 300 seconds.

According to the method 200 for manufacturing a polarizing film according to an embodiment, the plurality of processing tanks used for forming the polarizing film, for example, the swelling tank 21, the dyeing tank 22, the cross-linking tank 23, the complementary color tank 24, and the washing tank 25 In at least one of the processing tanks, a plurality of floating bodies 50 are introduced to cover the chemical liquid in the processing tanks, and then the optical film precursor 10 is processed in different processing tanks. Among them, since the chemical liquids in the cross-linking tank 23 and the complementary color tank 24 may contain iodine ions, the floats 50 are used to cover the two processing tanks in particular, therefore, the evaporation of the chemical liquids in the two tanks can be reduced, and the chemical liquids The contact area with air can be reduced, and the exposure of the chemical liquid to light can be reduced, thereby reducing the adverse effect on the optical properties of the polarizing film, and producing a polarizing film with better quality.

According to some embodiments, the present invention provides a floating body including a shell structure and a magnet structure, wherein the ratio of the height of the magnet structure to the height of the shell structure is between 1:10 and 1:20. Through the size design of the magnet structure, multiple floating bodies can attract each other with greater density, covering the chemical liquid in the processing tank of the polarizing film process, which can reduce the rate of water evapotranspiration in the chemical liquid and reduce the amount of air and liquid in the processing tank The contact area can further reduce the exposure of the chemical solution to light, which can reduce the burden of repeatedly adjusting the concentration of the chemical solution during the preparation of the polarizing film, and can avoid the oxidation reaction of the iodide ions in the chemical solution, so the polarizing film can be improved. The shortcomings of decreased polarization degree improve the quality of polarizing film.

In summary, although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs can make various modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be deemed as defined by the scope of the attached patent application.

150: floating body

151: Shell structure

151a: top

151b: bottom

151c: accommodating space

151p: opening

153: magnet structure

153a: top edge

153b: bottom edge

155: Seal

157: filler

C: geometric center

D ₁₅₁ , D ₁₅₃ : height

D _153a , D _153b : distance

L _C1 : first center section line

L _C2 : Second center section line

Claims (13)

A floating body includes a shell structure with an accommodating space inside. The shell structure includes a top and a bottom. The top, the bottom, and a geometric center of the shell structure are connected along a A first central section line extending in the first direction; a magnet structure located on the housing structure; and a sealing member, and the housing structure includes an opening corresponding to the bottom, the sealing member is disposed in the opening, To form an enclosed space in the accommodating space; wherein the housing structure has a first height and the magnet structure has a second height when projected vertically on the first central cross-section line, wherein the second height is opposite to the first The ratio of a height is between 1:10 and 1:20. The floating body as described in item 1 of the scope of the patent application, wherein the density of the seal is greater than 1; or wherein it is perpendicularly projected on a second center section line extending in a second direction through the geometric center, The seal has a first width, the housing structure has a second width, and the ratio of the first width to the second width is 1:4. The floating body as described in item 1 of the patent application scope, wherein the magnet structure is a belt structure and continuously surrounds the shell structure; or wherein the magnet structure includes a plurality of magnet blocks, and the magnet blocks are mutually Separate and surround the shell structure; or the magnet structure is a permanent magnet; or the magnetic force of the magnet structure is between 800-2000 Gauss. The floating body as described in item 3 of the patent application scope, wherein the magnet blocks respectively form a plurality of lines with the geometric center, and an angle is formed between the adjacent lines, and the angle is 60° to 120° ; Or the magnet blocks are respectively disposed at the center point of the side of the shell structure. The floating body as described in item 1 of the patent application scope, wherein the magnet structure includes a top edge and a bottom edge, the top edge corresponds to the top of the shell structure, and the bottom edge corresponds to the top of the shell structure The bottom, where the distance between the top edge and the top of the shell structure is equal to the distance between the bottom edge and the bottom of the shell structure when projected perpendicularly on the first central section line. The floating body as described in item 1 of the patent application scope, wherein the floating body is a sphere, a cube, a cuboid, a cylinder or a polygonal cylinder. The floating body as described in item 6 of the patent application scope, wherein the polygonal cylinder is 3~6 polygonal. The floating body as described in item 1 of the patent application scope, wherein the containing space has a filler, and the density of the filler is greater than or equal to 1. The floating body as described in item 1 of the scope of the patent application, wherein the thickness of the shell structure is between 2 and 10 mm; or the shell structure further includes an outer surface and an inner surface, the inner surface corresponding to the housing Space, and the magnet structure is formed on the outer surface or the inner surface; or the material of the shell structure is selected from polyethylene terephthalate (polyethylene terephthalate (PET), high density polyethylene (high density polyethylene, HDPE), low density polyethylene (low density polyethylene, LDPE, polyvinyl chloride (PVC), polypropylene (PP), polystyrene (PS), polycarbonate (PC), or melamine formaldehyde resin (melamine formaldehyde resin, MF); or the bottom mass of the shell structure is greater than the top mass of the shell structure. A system for manufacturing a polarizing film, comprising: a processing tank; a chemical liquid, which is arranged in the processing tank; and a plurality of floating bodies as described in any one of the patent application items 1 to 9, which are provided in The treatment tank floats on the chemical liquid, and the coverage area of the floating bodies for the chemical liquid is between 60% and 85%. The system for manufacturing a polarizing film as described in item 10 of the patent application scope, wherein each part of the floating body sunk in the chemical liquid has a sunken volume, and each of the floating bodies has a total volume, the sunk volume The ratio of the total volume is between 1/3 and 1/2; or each of the floating bodies has the same direction in the liquid medicine. A method for manufacturing a polarizing film, comprising: placing a plurality of floating bodies as described in any one of claims 1 to 9 in at least one processing tank among the plurality of processing tanks; and A polarizing film precursor is sequentially passed through the processing tanks to form a polarizing film. The method according to item 12 of the patent application scope, wherein the at least one treatment tank includes at least one of a swelling tank, a dyeing tank, a cross-linking tank, a complementary color tank, and a washing tank; or the polarized light The film precursor is a polyvinyl alcohol film.

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