阅读说明：本技术 处理装置及光学膜材的形成方法 (Processing apparatus and method for forming optical film material ) 是由 苏丘容 苏意茹 颜稚皓 颜名辉 于 2020-12-08 设计创作，主要内容包括：本揭露提供了一种处理装置及光学膜材的形成方法。处理装置包含一光学膜处理槽、一导液结构以及一溢流装置。光学膜处理槽配置以容置一处理液。溢流装置用于处理装置,以控制其中的处理液的流向,包括盒体部、引流板以及排水管。排水管连接于盒体部。引流板可动地配置于盒体部的至少一侧上,以随处理液的液面调整高度,使处理液导引至盒体部内。导液结构设置于溢流装置之内,且溢流装置是设置于光学膜处理槽之内。(The present disclosure provides a processing apparatus and a method for forming an optical film. The processing device comprises an optical film processing tank, a liquid guide structure and an overflow device. The optical film processing tank is configured to contain a processing liquid. The overflow device is used for a treatment device to control the flow direction of a treatment liquid therein, and comprises a box body part, a drainage plate and a drainage pipe. The drain pipe is connected to the box body portion. The drainage plate is movably arranged on at least one side of the box body part so as to adjust the height along with the liquid level of the treatment liquid, so that the treatment liquid is guided into the box body part. The liquid guiding structure is arranged in the overflow device, and the overflow device is arranged in the optical film processing tank.)

1. A processing apparatus, comprising:

an optical film processing tank configured to accommodate a processing liquid;

a liquid guiding structure; and

an overflow device, comprising:

a case portion;

a drainage plate movably arranged on at least one side of the box body part, wherein the height of the drainage plate is adjustable; and

a water discharge pipe connected to the box body part;

wherein the liquid guiding structure is arranged in the overflow device, and the overflow device is arranged in the optical film processing tank.

2. The treatment device of claim 1, wherein the flow guide plate has an opening; and/or the drainage plate is fixed on at least one side of the box body part through a fixing part passing through the opening; and/or the opening is a slot.

3. The treatment device of claim 1, further comprising a filter element; the filtering piece is detachably arranged in the box body part; and/or the filter member has a mesh count of 20 to 500 per square inch.

4. The treatment apparatus according to claim 1, wherein the drain pipe is detachably connected to the box body portion; and/or the box body part is provided with a through hole, the drain pipe is provided with an opening, and the opening is suitable for being embedded into the through hole so that the drain pipe is combined with the box body part; and/or the drain pipe also comprises a lifting handle; and/or a filter screen is arranged in the drain pipe, and the filter screen has the hole number of 40-2500 per square inch.

5. The treatment device according to claim 1, wherein the flow-guiding plates are movably disposed on opposite sides of the box portion; and/or the drainage plate has a corrugated structure, wherein the corrugated structure is in the shape of an arc, a triangle, a trapezoid, a polygon or a combination of the above.

6. The process apparatus of claim 5, wherein the undulation structure satisfies 0.005 ≦ L/a ≦ 1 and 0.03 ≦ H/c ≦ 1, where L is a distance between the highest points of adjacent bands of the undulation structure, H is a distance between the highest points and the lowest points of the undulation structure, a is a length of the box portion, and c is a height of the box portion.

7. The treatment device of claim 1, wherein the box portion conforms to 2 ≦ (ab)/a ≦ 200 and c/a ≦ 0.5, where a is the length of the box portion, b is the width of the box portion, c is the height of the box portion, a is the cross-sectional area of the drain pipe; and/or a is not more than 750cm, b is not more than 20cm and c is not more than 150 cm; a is not more than 300cm 2.

8. The processing apparatus according to claim 1, wherein the optical film processing bath further comprises a first wall, a second wall, a third wall, and a fourth wall, the first wall being opposite to the third wall, the second wall being opposite to the fourth wall; wherein the at least one overflow device is disposed on at least one of the first wall, the second wall, the third wall, and the fourth wall; and/or the optical film processing tank is a swelling tank, a dyeing tank, a crosslinking tank, and/or a rinsing tank.

9. The treatment apparatus of claim 1, further comprising a spray module and a roller, the spray module configured to spray a cleaning liquid onto the roller, the liquid directing structure positioned between the roller and the overflow device, and the liquid directing structure configured to direct the cleaning liquid through the roller.

10. The processing apparatus as claimed in claim 9, wherein the fluid-guiding structure has a body and two wing structures, the body defines a long axis direction, and the two wing structures are connected to opposite sides of the body when viewed along the long axis direction; and/or the included angle between the two side wing structures and a first reference plane is 120-140 degrees.

11. The handling device of claim 10, wherein the body further defines a minor axis direction, the major axis direction being perpendicular to the minor axis direction, and the length of the wing structures in the minor axis direction is between half of the radius of the roller and the radius.

12. The processing apparatus as claimed in claim 10, wherein the body has two first guiding slopes and two second guiding slopes, the body further defines a short axis direction, the long axis direction is perpendicular to the short axis direction, and the two first guiding slopes are connected to each other and the two first guiding slopes are respectively connected to the corresponding second guiding slopes when viewed along the short axis direction.

13. The processing apparatus as claimed in claim 12, wherein the two first guiding slopes have an angle of 160-170 ° with a second reference plane; and/or the included angle between the two second guide inclined planes and a third reference plane is 90-110 degrees.

14. The processing apparatus according to claim 12, wherein a portion of the second guide slope is submerged under the surface of the processing liquid in the overflow means; and/or the portion of the second guide slopes is located within the box portion.

15. The handling device according to claim 12, wherein, when viewed along the long axis, a ratio of a shortest distance between the roller and each of the two first guiding slopes to a radius of the roller is between 3.75 and 6.25, and/or a ratio of a shortest distance between the roller and each of the two wing structures to a radius of the roller is between 1.25 and 2.5; and/or the roller is provided with a rotating shaft, and the ratio of the distance between the rotating shaft and a central line of the liquid guide structure or the overflow device in the short axis direction to the radius of the roller is between 0.125 and 0.5.

16. The processing apparatus as claimed in claim 1, wherein the drain pipe has a first pipe, a second pipe and a bottom valve seat, the first pipe is connected to a bottom surface of the box body portion, and the second pipe is movably connected to the first pipe, wherein the bottom valve seat is disposed on a drain hole of the optical film processing tank, and the second pipe is movably connected to the bottom valve seat.

17. The processing apparatus as claimed in claim 16, wherein the second tube has a hook portion configured to be connected to a driving member, the base valve seat has at least one side opening, and the at least one side opening is exposed from the second tube when the driving member drives the second tube to move toward the first tube.

18. The device of claim 16, wherein the base valve seat includes a blocking portion and a tubular portion, a first portion of the tubular portion is disposed on one side of the drain hole, a second portion of the tubular portion is disposed on the other side of the drain hole, and the blocking portion is disposed between the first portion and the second portion and extends radially outward.

19. A method of forming an optical film, comprising:

conveying an optical film through a processing apparatus according to any one of claims 1 to 18; and

the optical film is dried.

20. The method of claim 19, wherein the optical film is a polyvinyl alcohol resin film; and/or the advancing direction of the optical film material is vertical to the length extending direction of the overflow device; and/or the optical film material passes through the processing liquid below the overflow device.

Technical Field

The present disclosure relates to a processing apparatus, and more particularly, to a processing apparatus capable of reducing bubble generation.

Background

The optical film usually needs to undergo a wet process of various liquid treatments, but during the process, impurities such as film dust or dust are easily generated to float in the treatment liquid, and after reflowing, the impurities are highly likely to adhere to the optical film, resulting in defects.

Disclosure of Invention

The present disclosure relates to a processing apparatus. The processing device comprises an optical film processing tank, a liquid guide structure and an overflow device. The optical film processing tank is configured to contain a processing liquid. The overflow device is used for a treatment device to control the flow direction of a treatment liquid therein, and comprises a box body part, a drainage plate and a drainage pipe. The drain pipe is connected to the box body portion. The drainage plate is movably arranged on at least one side of the box body part so as to adjust the height along with the liquid level of the treatment liquid, so that the treatment liquid is guided into the box body part. The liquid guiding structure is arranged in the overflow device, and the overflow device is arranged in the optical film processing tank.

According to another aspect of the present disclosure, a method for forming an optical film is provided, which includes the following steps. The step of conveying the optical film material through the processing device is performed. Next, a step of drying the optical film material is performed.

The present disclosure provides a liquid guiding structure disposed between a roller and an overflow device, wherein the liquid guiding structure is configured to guide a cleaning liquid flowing through the roller, so as to avoid a problem of bubbles generated by the cleaning liquid directly dropping to a processing liquid. Therefore, according to the design of the liquid guiding structure disclosed by the present disclosure, the probability of impurities adhering to the optical film material due to the adsorption of impurities by bubbles generated by directly dropping the cleaning liquid to the processing liquid can be greatly reduced.

In some embodiments, the drain pipe can have a first pipe, a second pipe, and a base valve seat. When needing the drainage, can drive the second body and move towards first body, make the side opening that is sheltered from by the second body on the base valve seat expose, and then make the treatment fluid discharge by the side opening. Based on the structural design of the drain pipe, the worker can drain water only by pulling the second pipe body without moving the box body part and the drain pipe out of the optical film processing tank, so that the design disclosed by the invention can reduce the burden of the worker and increase the convenience of drainage.

Drawings

The present disclosure will become more apparent from the detailed description set forth below when taken in conjunction with the drawings. It is emphasized that, in accordance with the standard practice in the industry, various features are not drawn to scale and are used for illustrative purposes only. In fact, the dimensions of the various features may be arbitrarily expanded or reduced for clarity of presentation.

FIG. 1 is a schematic diagram of an apparatus for processing an optical film according to some embodiments of the present disclosure;

FIG. 2A is a schematic view showing the circulation of a processing solution in an optical film processing tank of a processing apparatus according to an embodiment of the disclosure;

FIG. 2B shows a top view of the optical film processing tank of FIG. 2A;

FIG. 3A is a schematic view showing the circulation of a processing solution in an optical film processing tank of a processing apparatus according to another embodiment of the present disclosure;

FIG. 3B shows a top view of the optical film processing tank of FIG. 3A;

FIG. 4 shows a partially exploded view of an optical film processing tank according to one embodiment of the present disclosure;

FIG. 5 is a perspective view of an optical film processing tank according to one embodiment of the present disclosure;

FIGS. 6A-6K respectively illustrate different shapes of the relief structure according to some embodiments of the present disclosure;

FIG. 7 is a perspective view of an optical film processing tank according to another embodiment of the present disclosure;

FIG. 8 is a schematic view of an optical film processing bath viewed along the X-axis according to another embodiment of the present disclosure;

FIG. 9 is a schematic view of an optical film processing tank viewed along the Y-axis according to another embodiment of the present disclosure;

FIG. 10 is a perspective view of a portion of an optical film processing tank according to another embodiment of the present disclosure;

fig. 11 is a perspective view of a second tube after moving relative to a first tube according to another embodiment of the present disclosure.

[ notation ] to show

1: optical film treating tank

2 treating fluid

3: overflow device

3e inner space

Filter element

10 purifying device

11 first wall

12: second wall

13 third wall

131 extending connecting piece

Fourth wall 14

15, a drain hole

151 drainage surface

16: bottom surface

30: water discharge pipe

Opening for 30h

31: drainage plate

31A, 31B, 31C, 31D, 31E, 31F, 31G, 31H, 31I, 31J, 31K relief structure

31Ab, lowest point

31At highest point

32: box body part

32h through hole

40: water discharge pipe

41 first pipe body

42 the second tube

421 clamping hook part

44 bottom valve seat

441 barrier part

443 tubular part

4431 first part

4432 second part

445 side opening

50, fixing part

60 driving member

101 circulating pipeline

100 optical film material

110: swelling tank

120: dyeing tank

130 cross-linking groove

140 rinsing bath

150 drying furnace

160 roller

160X rotating shaft

301 handle

310, opening a hole

320 fixing part

a is length

b width of

c height

H is the distance between the highest point and the lowest point of the undulating structure

L is the distance between the highest points of adjacent wave bands of the undulating structure

P1 liquid inlet area

P2 transfer area

P3 liquid outlet area

200 liquid guiding structure

201 main body

2011 retaining wall

202 wing structure

204 first guide slope

206 second guide slope

250: sprinkling module

Ag1 included angle

Ag2 included angle

Ag3 included angle

AX1 (long axis direction)

AX2 minor axis direction

CL1 center line

D1 shortest distance

D2 shortest distance

D3 distance

HL1 reference plane

HL2 reference plane

HL3 reference plane

L1 length

X is the X axis

Y is the Y axis

Z is the Z axis

Detailed Description

In order to make the objects, features and advantages of the present disclosure more comprehensible, embodiments accompanied with figures are described in detail below. The arrangement of the elements in the embodiments is for illustrative purposes and is not intended to limit the present disclosure. And the reference numbers in the embodiments are partially repeated to simplify the description, and do not indicate the relevance between the different embodiments. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are directions with reference to the attached drawings only. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Furthermore, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used in embodiments to describe one element's relative relationship to another element of the figures. It will be understood that if the device of the drawings is turned over and upside down, elements described as being on the "lower" side will be elements on the "upper" side.

As used herein, the term "about" generally means within 20%, preferably within 10%, and more preferably within 5% of a given value or range. The amounts given herein are approximate, meaning that the meaning of "about" or "approximately" may still be implied without particular recitation.

The present disclosure relates to a processing apparatus. In some embodiments, the processing device may include an overflow device including a flow guiding plate movably disposed on at least one side of the box portion, and the position of the flow guiding plate is adjustable according to the liquid level of the processing liquid, so as to control the flow direction of the processing liquid and guide the processing liquid into the box portion to filter out impurities, thereby reducing the probability of the impurities adhering to the optical film material.

It is noted that this disclosure is not intended to show all possible embodiments, and that other embodiments not specifically set forth herein may also be utilized. Moreover, the dimensional proportions shown in the drawings are not to scale with actual products. Accordingly, the description and drawings are only for the purpose of illustrating embodiments and are not to be construed as limiting the scope of the present disclosure. Moreover, the descriptions of embodiments, such as specific structures, process steps, and material applications, are provided for illustrative purposes only and are not intended to limit the scope of the present disclosure. The details of the steps and structures of the various embodiments may be varied and modified as required by the actual fabrication process without departing from the spirit and scope of the present disclosure. The following description will be given with the same/similar reference numerals as used for the same/similar elements.

Referring to FIG. 1, a schematic diagram of processing equipment for an optical film 100 according to some embodiments of the present disclosure is shown. For example, the process of manufacturing the optical film 100 may include the following steps: swelling treatment, dyeing treatment, stretching treatment, crosslinking treatment, washing treatment and drying treatment. The optical film 100 may be guided by a plurality of rollers 160 to sequentially pass: a swelling tank 110 for performing swelling treatment, a dyeing tank 120 for performing dyeing treatment, and a crosslinking tank 130 for performing crosslinking treatment. Next, the optical film material 100 is conveyed through the rinsing bath 140 to wash the reaction solution adhering to the surface. Thereafter, the optical film material 100 is dried in a drying furnace 150. However, when the optical film material 100 passes through the optical film processing tanks such as the swelling tank 110, the dyeing tank 120, the crosslinking tank 130, and the rinsing tank 140, impurities such as film dust and dust on the surface or in the process environment are easily introduced into the optical film processing tanks, and the impurities may be attached to the surface of the optical film material 100, thereby affecting the optical properties and the production quality of the optical film material 100.

In one embodiment, the impurities on the surface of the optical film 100 include optical film scraps, such as polyvinyl alcohol scraps, chemical agent crystals in a process bath, rust scraps, or other impurities generated in process materials or equipment.

In one embodiment, the optical film 100 may be a single-layer or multi-layer film, such as a polarizer, a retardation film, a brightness enhancement film, or other films that are beneficial for optical gain, alignment, compensation, turning, orthogonal, diffusing, protection, anti-sticking, scratch-resistant, anti-glare, reflection suppression, high refractive index, etc.

In one embodiment, the optical film 100 may be a polyvinyl alcohol (PVA) resin film, which may be prepared by saponifying a polyvinyl acetate resin. Examples of the polyvinyl acetate resin include a homopolymer of vinyl acetate, i.e., polyvinyl acetate, and a copolymer of vinyl acetate and other monomers copolymerizable with vinyl acetate. Examples of other monomers copolymerizable with vinyl acetate include unsaturated carboxylic acids (e.g., acrylic acid, methacrylic acid, ethyl acrylate, n-propyl acrylate, methyl methacrylate), olefins (e.g., ethylene, propylene, 1-butene, 2-methylpropene), vinyl ethers (e.g., ethyl vinyl ether, methyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether), unsaturated sulfonic acids (e.g., vinylsulfonic acid, sodium vinylsulfonate), and the like.

Referring to fig. 2A, a schematic circulation diagram of the processing liquid 2 in the optical film processing tank 1 of the processing apparatus according to an embodiment of the disclosure is shown. The optical film treatment tank 1 may be one of the swelling tank 110, the dyeing tank 120, the crosslinking tank 130, and the rinsing tank 140, but the present disclosure is not limited thereto. The optical film processing tank 1 stores a processing liquid 2 and may include at least one overflow device 3. For convenience of illustration, in the embodiment, a region where the optical film (not shown) is immersed in the processing liquid 2 is defined as a liquid inlet region P1, a region where the optical film is transferred in the processing liquid 2 is defined as a transfer region P2, and a region where the optical film is pulled out from the processing liquid 2 is defined as a liquid outlet region P3. By the arrangement of the overflow device 3, the flow direction of the processing liquid 2 can be controlled, and the impurities in the processing liquid 2 can be filtered by the overflow device 3, so as to prevent the impurities from flowing back to the liquid inlet region P1, the transfer region P2 or the liquid outlet region P3 and adhering to the optical film material. Specifically, the overflow device 3 may include a drainage plate 31 and a drainage pipe 30, and the position of the drainage plate 31 may be adjusted according to the liquid level of the treatment liquid 2, so as to guide the treatment liquid 2 containing impurities from the drainage plate 31 into the drainage pipe and discharge the treatment liquid 2 to the circulation pipeline 101 outside the optical film treatment tank 1 through the drainage pipe 30. The circulation line 101 may be provided with a purification device 10 for filtering impurities in the treatment liquid 2. Then, the filtered and purified treatment solution 2 can be recycled back to the optical film treatment tank 1 for use.

Referring to FIG. 2B, a top view of the optical film processing tank 1 of FIG. 2A is shown. The optical film processing tank 1 may include a first wall 11, a second wall 12, a third wall 13, and a fourth wall 14, wherein the first wall 11 is opposite to the third wall 13, and the second wall 12 is opposite to the fourth wall 14. In another embodiment, the optical film processing tank 1 may also have other shapes, such as a polygon or a circle, without being limited to the drawings of the embodiment.

In an embodiment, the overflow devices 3 may be disposed at different positions in the optical film processing tank 1, and the number is not limited. For example, referring to fig. 2B, the overflow device 3 may be disposed on at least one of the first wall 11, the second wall 12, the third wall 13 and the fourth wall 14 through a supporting base (not shown), or the overflow device 3 may be disposed on each wall. Furthermore, more than one overflow device 3 may be provided per wall. Here, the drainage plate 31 may be disposed on a side facing the liquid inlet region P1, the transfer region P2, and the liquid outlet region P3 to carry out impurities floating above the liquid inlet region P1, the transfer region P2, or the liquid outlet region P3 through the drainage plate 31 and the drainage pipe 30, thereby preventing the impurities from flowing back to the liquid inlet region P1, the transfer region P2, or the liquid outlet region P3. In one embodiment, when the overflow device 3 is disposed on the first wall 11 or the third wall 13, the traveling direction of the optical film is substantially perpendicular to the length extending direction of the overflow device 3; when the overflow device 3 is disposed on the second wall 12 or the fourth wall 14, the traveling direction of the optical film is substantially parallel to the longitudinal extension direction of the overflow device 3.

In another embodiment, as shown in fig. 3A and 3B, the overflow means 3 may be disposed across the second wall 12 and the fourth wall 14. Specifically, the overflow device 3 is disposed above the transfer area P2, and the drainage plates 31 are disposed on opposite sides facing the liquid inlet area P1 and the liquid outlet area P3, respectively, so as to carry out the impurities floating above the liquid inlet area P1, the transfer area P2, or the liquid outlet area P3 through the drainage plates 31 and the drainage pipes 30. In addition, in one embodiment, one or more overflow devices 3 may be disposed on at least one of the first wall 11, the second wall 12, the third wall 13 and the fourth wall 14. In fig. 3A and 3B, the optical film material travels in a direction substantially perpendicular to the longitudinal extension direction of the overflow device 3 and passes through the processing liquid below the overflow device 3, as shown in fig. 3A. Here, the longitudinal extending direction of the overflow device 3 is, for example, a direction parallel to the first wall 11 and the third wall 13 in fig. 3B.

Referring to fig. 4, a partially exploded view of an optical film processing tank 1 according to an embodiment of the disclosure is shown. The overflow device 3 further comprises a box portion 32, the box portion 32 being, for example, a box-shaped object having five sides, and the drain pipe 30 being connected to the box portion 32, for example, to the bottom surface of the box portion 32. In one embodiment, the box portion 32 conforms to the relationship of 2 ≦ (ab)/A ≦ 200 and c/a ≦ 0.5, where a is the length of the box portion 32, b is the width of the box portion 32, c is the height of the box portion 32, and A is the cross-sectional area of the drain 30. Wherein a is not more than 750 cm; b is not more than 20 cm; c is not more than 150 cm; and A is no greater than 300cm 2.

The related configuration of the flow guide plate 31 is described in detail below. In an embodiment, the drainage plate 31 is movably disposed on at least one side of the case portion 32, so that the position of the drainage plate 31 can be adjusted according to the level of the treatment liquid 2. In the embodiment of fig. 4, the box portion 32 may have a bottom surface and four side surfaces, wherein the bottom surface is connected to the drainage tube 30, and the drainage plate 31 is disposed on the lower side of the four side surfaces.

In detail, referring to fig. 4 to 5, fig. 5 is a perspective view illustrating an optical film processing tank 1 according to an embodiment of the disclosure. The flow guide plate 31 can have an opening 310 such that a fastener 320 can be used to pass through the opening 310 to lock the flow guide plate 31 to at least one side of the cartridge portion 32. In this case, the drainage plate 31 is fixed to the lower of the four side surfaces of the case portion 32. In one embodiment, the opening 310 is, for example, a long hole, and the long axis of the opening 310 is perpendicular to the liquid surface. Therefore, the height of the drainage plate 31 can be freely adjusted according to the liquid level height of the treatment liquid 2, so that the treatment liquid 2 can smoothly flow into the internal space 3e enclosed by the drainage plate 31 and the box body part 32.

As shown in FIG. 4, the drainage plate 31 may have a undulating configuration 31A, with the undulating configuration 31A having an uppermost point 31At and a lowermost point 31 Ab. When the user adjusts the position of the drainage plate 31, the liquid level of the treatment liquid 2 may be located between the highest point 31At and the lowest point 31Ab of the undulating structure 31A. As a result, the processing liquid 2 can be guided into the internal space 3e, as shown in fig. 5.

Referring to fig. 6A, the shape of the relief structure 31A is shown. The shape of the relief structure 31A is a continuous combination of triangles. The distance between the highest point of the adjacent wavebands of the relief structure 31A is L, the distance between the highest point 31At and the lowest point 31Ab of the relief structure 31A is H, and the relief structure 31A satisfies 0.005 ≦ L/a ≦ 1 and 0.03 ≦ H/c ≦ 1. Preferably, the undulation 31A is in accordance with 0.01 ≦ L/a ≦ 0.1 and 0.03 ≦ H/c ≦ 0.33, where a is the length of the box portion 32 and c is the height of the box portion 32.

Although the shape of the relief structure 31A shown in fig. 6A is a continuous combination of triangles, the disclosure is not limited thereto. Referring to fig. 6B to 6K, different shapes of the relief structures 31B, 31C, 31D, 31E, 31F, 31G, 31H, 31I, 31J and 31K according to an embodiment of the disclosure are respectively shown. As shown in fig. 6B, the relief structure 31B may be shaped as a discontinuous combination of triangles. As shown in fig. 6C, 6D, 6E, and 6F, the undulating structures 31C, 31D, 31E, and 31F may each include an arc of different arcs and combinations thereof. As shown in fig. 6G and 6H, the relief structures 31G and 31H may be continuous and discontinuous combinations of quadrangles, for example trapezoids, respectively. As shown in fig. 6I, 6J, and 6K, the relief structures 31I, 31J, and 31K may be continuous or discontinuous combinations of polygons, for example, the relief structures 31I and 31J may be continuous and discontinuous combinations of pentagons, respectively, and the relief structure 31K may be a continuous combination of hexagons. Furthermore, the shape of the relief structure in the present disclosure is not limited thereto, and the shape of the relief structure can be various combinations of the above patterns.

In another embodiment, referring to fig. 5, the overflow device 3 may further include a filter element 4, and the filter element 4 is detachably disposed in the box portion 32, for example, in the inner space 3 e. The filter element 4 is, for example, a filter screen. The filtering member 4 has a mesh number of 20-500 per square inch, so that larger impurities and impurities can be primarily filtered, the efficiency of filtering the impurities can be further increased, and the blockage of the drain pipe 30 caused by the large impurities and impurities can be avoided. Furthermore, the number of the drainage pipes 30 can be more than one, so that the number of the drainage pipes 30 can be increased/decreased according to the actual use situation.

As shown in fig. 5, since the drain pipe 30 can continuously drain the processing liquid 2 in the internal space 3e, the liquid level of the processing liquid 2 in the internal space 3e is lower than the liquid level of the processing liquid 2 in the optical film processing tank 1, and the processing liquid 2 in the internal space 3e does not flow back to the optical film processing tank 1, thereby preventing the optical film material from being contaminated by impurities in the processing liquid 2.

In addition, in one embodiment, the drain tube 30 is removably connected to the housing portion 32. Referring to fig. 4, the box portion 32 may have a through hole 32h, and the through hole 32h is disposed on the bottom surface of the box portion 32, but not limited thereto. The drain pipe 30 may have an opening 30h, and the opening 30h corresponds to the size of the through hole 32h, for example, slightly smaller than the size of the through hole 32h according to the design of tolerance. Thus, the drainage tube 30 can be inserted into the through hole 32h through the opening 30h to be combined with the box portion 32, but the disclosure is not limited thereto. In addition, a filter screen (not shown) may be disposed inside the drain pipe 30 to further filter impurities and prevent the drain pipe 30 from being blocked. The filter screen has a mesh number of 40-2500 per square inch, and when the filter screen is configured, the mesh number of the filter screen per square inch is more than that of the filter member 4, for example, the mesh number is 2-5 times that of the filter member 4, so as to achieve a better filtering effect.

In one embodiment, as shown in FIG. 4, the drain 30 may further include a handle 301. When cleaning is needed, the user can disassemble the box body 32 and the drain pipe 30, and can hold the handle 301 to pull the drain pipe 30 out of the optical film processing tank 1 for cleaning, thereby facilitating the operation and maintenance of the overflow device.

The overflow device and the optical film processing tank can control the flow direction of the processing liquid in the optical film processing tank so as to filter impurities contained in the processing liquid. The overflow devices can be arranged at different positions in the optical film processing tank according to the use condition, and the arrangement number is not limited. The overflow device includes a flow-guiding plate movably disposed on at least one side of the case portion. Therefore, the position of the drainage plate can be adjusted along with the liquid level of the treatment liquid so as to control the flow direction of the treatment liquid and guide the treatment liquid into the box body part to filter impurities, thereby reducing the probability of the impurities being attached to the optical film material.

Next, referring to fig. 7, fig. 7 is a perspective view of an optical film processing tank 1 according to another embodiment of the disclosure. In this embodiment, the processing apparatus of the present disclosure may further include a sprinkling module 250 and a liquid guiding structure 200. The sprinkling module 250 is configured to sprinkle a cleaning liquid on a roller 160 to remove impurities or residual processing liquid, thereby ensuring the cleaning of the roller 160 during the process and avoiding affecting the yield of the optical film. In one embodiment, the cleaning liquid may be, for example, water, but is not limited thereto. In one embodiment, the length of the sprinkling module 250 is substantially the same as the length of the liquid guiding structure 200, and the sprinkling module is correspondingly configured. In one embodiment, the spraying module 250 sprays the cleaning liquid from below and/or above the roller.

In one embodiment, the liquid guiding structure 200 is located between the roller 160 and the overflow device 3, and the liquid guiding structure 200 is configured to guide the cleaning liquid from the sprinkling module 250 and flowing through the roller 160. In some embodiments, the fluid-conducting structure 200 may be made of a stainless steel material, but is not limited thereto.

Referring to fig. 7 to 9, fig. 8 is a schematic view of an optical film processing tank 1 according to another embodiment of the present disclosure viewed along an X-axis direction, and fig. 9 is a schematic view of the optical film processing tank 1 according to another embodiment of the present disclosure viewed along a Y-axis direction. In this embodiment, the liquid guiding structure 200 has a body 201 and two side wing structures 202. The body 201 defines a major axis direction AX1 and a minor axis direction AX2, the major axis direction AX1 is parallel to the X axis, the minor axis direction AX2 is parallel to the Y axis, and the major axis direction AX1 is perpendicular to the minor axis direction AX 2.

As shown in fig. 8, the two wing structures 202 are connected to opposite sides of the body 201 when viewed along the long axis direction AX1 (X-axis). In this embodiment, an included angle Ag1 formed between each of the two side wing structures 202 and a reference plane HL1 (the first reference plane) may be 120 degrees to 140 degrees, and the reference plane HL1 may be, for example, parallel to the horizontal plane, but is not limited thereto. In addition, the third wall 13 may be provided with an extending connector 131 configured to be connected to one of the wing structures 202, for example, by using a screw locking connection, so that the liquid guiding structure 200 is suspended on the overflow device 3. In some embodiments, the extension connector 131 may be adjusted such that the position of the fluid guide structure 200 in the Z-axis direction may be arbitrarily adjusted.

In this embodiment, the length L1 of the wing structure 202 in the minor axis direction AX2 (Y-axis) may be between half (radius/2) of the radius of the roller and the radius. In one embodiment, the radius of the roller 160 may be 80 mm (but is not limited thereto), and the length L1 of the wing structure 202 in the minor axis direction AX2(Y axis) is between 40 mm and 80 mm. Based on this design, it is ensured that the cleaning liquid passing through the roller 160 can fall on the liquid guiding structure 200.

As shown in fig. 7 and 9, the body 201 may be formed with a groove structure having two first guiding slopes 204 and two second guiding slopes 206. When viewed along the short axis direction AX2 (Y-axis), the first guide slopes 204 are connected to each other, and the first guide slopes 204 are respectively connected to the corresponding second guide slopes 206.

In this embodiment, an included angle Ag2 formed between each of the two first guiding inclined planes 204 and a reference plane HL2 (the second reference plane) is 160-170 degrees, and an included angle Ag3 formed between each of the two second guiding inclined planes 206 and a reference plane HL3 (the third reference plane) is 90-110 degrees. The reference planes HL2, HL3 can be, for example, parallel to the horizontal plane, but are not limited thereto. In one embodiment, a portion of the second guiding slope 206 is below the surface of the processing liquid 2 intruding into the overflow device 3 and is located in the box portion 32 of the overflow device 3. In one embodiment, the fluid-directing structure 200 is in contact with the surface of the treatment fluid 2 within the housing portion 32. In addition, in an embodiment, the body 201 may further include a plurality of side barriers 2011, the side barriers 2011 are disposed at two sides of the second guiding inclined plane 206 to guide the cleaning liquid to stably flow into the overflow device 3 along the second guiding inclined plane 206.

Based on the above structure design, the cleaning liquid guided by the liquid guiding structure 200 can stably flow into the overflow device 3 along the first guiding inclined plane 204 and the second guiding inclined plane 206, thereby reducing or reducing the probability of bubbles generated by the cleaning liquid directly dropping to the processing liquid.

As shown in FIG. 8, when viewed along the long axis direction AX1(X axis), the ratio of the shortest distance D1 between the roller 160 and the first guiding inclined plane 204 to the radius of the roller 160 (D1/roller radius) is between 3.75 and 6.25. In one embodiment, the shortest distance D1 may be 30-50 cm, and the radius of the roller 160 may be 80 mm, so that the cleaning liquid dropped from the roller 160 is not easily splashed. Furthermore, a ratio (D2/roller radius) of a shortest distance D2 between the roller 160 and the wing structure 202 to a radius of the roller 160 is between 1.25 and 2.5, in one embodiment, the shortest distance D2 may be 10 to 20cm, and the radius of the roller 160 may be 80 mm, based on this design, the range of guiding the cleaning liquid by the liquid guiding structure 200 may be increased, and the installation and setup may be facilitated without causing collision damage to the roller 160. In addition, the roller 160 has a rotation shaft 160X, and a ratio (D3/roller radius) of a distance D3 between the rotation shaft 160X and a center line CL1 of the liquid guiding structure 200 (or the overflow device 3) in the minor axis direction AX2(Y axis) to a radius of the roller 160 is between 0.125 and 0.5, in an embodiment, the distance D3 is 10 to 40 mm, and the radius of the roller 160 can be 80 mm, based on this design, the cleaning liquid sprayed by the spraying module 250 can be completely guided by the liquid guiding structure 200. Based on the above structure design, the impact of the cleaning liquid falling from the roller 160 to the liquid guiding structure 200 can be reduced, thereby reducing or reducing the probability of generating bubbles.

Referring to fig. 10, fig. 10 is a perspective view of a partial structure of an optical film processing tank 1 according to another embodiment of the present disclosure. In some embodiments, the drain tube 40 can have a first tube 41, a second tube 42, and a base seat 44. When the water discharge is required, the second pipe 42 is driven to move toward the first pipe 41, the side opening 445 of the base valve seat 44 shielded by the second pipe 42 is exposed, and the treatment liquid 2 is discharged through the side opening 445. Based on the structural design of the drainage pipe 40, the worker can drain water by pulling the second pipe 42 without moving the box portion 32 of the overflow device 3 and the drainage pipe 40 entirely out of the optical film processing tank 1, so the design of the present disclosure can reduce the burden of the worker and increase the convenience of drainage.

In one embodiment, the first tube 41 of the drainage tube 40 is connected to the bottom surface of the box portion 32 of the overflow device 3, and the first tube 41 is communicated with the box portion 32, so that the liquid in the box portion 32 can flow into the first tube 41. In an embodiment, the second tube 42 is movably connected to the first tube 41, for example, a diameter of the first tube 41 is slightly larger than a diameter of the second tube 42, so that the second tube 42 is movably sleeved in the first tube 41, but the disclosure is not limited thereto, and the diameter of the second tube 42 may be slightly larger than the diameter of the first tube 41, so that the second tube 42 is movably sleeved outside the first tube 41.

In one embodiment, the bottom valve seat 44 is disposed on a drain hole 15 of the optical film processing tank 1. Specifically, the drain hole 15 is located on a drain surface 151 of the optical film treatment tank 1, and the height (position in the Z-axis direction) of the drain surface 151 is lower than the bottom surface 16 of the optical film treatment tank 1, so that the optical film treatment tank 1 can drain the treatment liquid 2. The bottom valve seat 44 has a blocking portion 441 and a tubular portion 443, wherein a first portion 4431 of the tubular portion 443 is disposed on one side (e.g., the inner side) of the drainage hole 15, a second portion 4432 of the tubular portion 443 is disposed on the other side (e.g., the outer side) of the drainage hole 15, and the blocking portion 441 is disposed between the first portion 4431 and the second portion 4432 and extends radially outward to block liquid from flowing into the drainage hole 15 through a gap between the drainage hole 15 and the tubular portion 443. In addition, the second tube 42 is movably connected to the bottom valve seat 44, for example, the second tube 42 is sleeved outside the tubular portion 443 of the bottom valve seat 44, but the present disclosure is not limited thereto, and the tubular portion 443 of the bottom valve seat 44 is sleeved outside the second tube 42, and the second portion 4432 of the tubular portion 443 of the bottom valve seat 44 is provided with a plurality of side openings 445, so that when the optical film processing tank 1 needs to discharge the processing liquid 2, the second tube 42 can be moved to expose the side openings 445 to discharge the processing liquid 2 in the optical film processing tank 1.

In one embodiment, the second tube 42 may have a hook 421 configured to connect to a driving member 60. In one embodiment, the hook 421 can be a handle, and the driving member 60 can be a refining bar, but is not limited thereto. The driving member 60 can be used to pull the second tube 42 to move along the Z-axis direction.

Referring to fig. 10 to 11, fig. 11 is a perspective view illustrating the second tube 42 moving relative to the first tube 41 according to an embodiment of the present disclosure. As shown in fig. 11, when the driving member 60 drives the second tube 42 to move toward the first tube 41 along the Z-axis direction, the side opening 445 shielded by the second tube 42 is exposed. Thus, the treatment liquid 2 in the optical film treatment tank 1 can flow into the drain hole 15 through the side opening 445 and be discharged to the outside of the optical film treatment tank 1.

In addition, the third wall 13 may be provided with a fixing member 50, and the driving member 60 may be fixed to the fixing member 50 so that the processing liquid 2 continuously flows into the drain hole 15 through the side opening 445. When the processing liquid 2 is discharged to a desired level, the driving member 60 is released and loosened by the fixing member 50, and the second tube 42 is moved toward the stopper 441 by gravity to shield the side opening 445, as shown in fig. 10, so that the processing liquid 2 is not discharged.

The present disclosure provides a liquid guiding structure 200 disposed between the roller 160 and the overflow device 3, wherein the liquid guiding structure 200 is configured to guide the cleaning liquid from the sprinkling module 250 and flowing through the roller 160, so as to avoid the problem of bubbles generated by the cleaning liquid directly dropping to the overflow device 3. Therefore, according to the design of the liquid guiding structure 200 of the present disclosure, the probability of impurities adhering to the optical film material due to the adsorption of impurities by bubbles generated by the cleaning liquid directly dropping to the processing liquid can be greatly reduced.

Additionally, in some embodiments, the drain tube 40 can have a first tube 41, a second tube 42, and a base seat 44. When the water discharge is required, the second pipe 42 is driven to move toward the first pipe 41, the side opening 445 of the base valve seat 44 shielded by the second pipe 42 is exposed, and the treatment liquid 2 is discharged through the side opening 445. Based on the structural design of the drainage pipe 40, the worker can drain water by pulling the second pipe 42 without moving the box portion 32 and the drainage pipe 40 entirely out of the optical film processing tank 1, so the design of the present disclosure can reduce the burden of the worker and increase the convenience of drainage.

Although embodiments of the present disclosure and their advantages have been described above, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure by those skilled in the art. Moreover, the scope of the present disclosure is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Accordingly, the scope of the present disclosure includes the processes, machines, manufacture, compositions of matter, means, methods, and steps described above. In addition, each claim constitutes a separate embodiment, and the scope of the present disclosure also includes combinations of the respective claims and embodiments.