TWM577762U - Clamp plate and slot die coating device using same - Google Patents

Abstract

The present invention relates to a clip adapted to be placed on a slit coating head to vary the coating width. The clip includes a first plate portion, a second plate portion, and a third plate portion. The second plate portion and the third plate portion are coupled to the first plate portion and protrude in the same direction. The second plate portion is spaced apart from the third plate portion to form a main flow channel for connecting one of the first shunt tubes of the slit coating head. The second plate portion has a first split runner. The first shunt has opposite open ends and closed ends. The open end is connected to the main flow path, and the shortest distance from the open end to the first plate portion is greater than the shortest distance from the closed end to the first plate portion. The second plate portion is for covering one portion of the first shunt tube, and the closed end of the first shunt channel is for exposing another portion of the first shunt tube. In addition, the present invention also relates to a slit coater to which the aforementioned clips are applied.

Description

Clip and slot coater applying the same

The present invention relates to a clip and a slit coater using the same, in particular to a clip having a splitter and a slit coater using the same.

Precision coating technology is an important development direction of thin film technology in the future. Among many coating technologies, slot die coating technology is one of the versatile and deep development potential. In recent years, due to the rise of the electronics industry, the requirements for film uniformity have become more stringent.

However, the conventional slit coater has a problem of causing coating defects when a clip mask is used in response to different coating widths. In detail, for the difference in the width to be coated, a clip mask is generally disposed in the slit coating head to block a part of the shunt tube (or flow path) in the coating head, thereby changing The width of the paint that can flow from the flow tube, that is, the width of the coating applied to the receiving member, but this will cause the paint to form a stagnant flow under the obstructed flow tube, and the stagnation will be too long. The paint tends to be qualitatively deteriorated, which not only affects the coating operation, but also affects the yield of the coating if applied to the receiving member.

In view of this, the present invention provides a clip and a slit coater using the same, which can avoid the stagnation of the paint which is easy to be caused by the conventional clip for the slit coater and solve the problem caused by the stagnation of the paint. The problem that comes.

A clip according to the present invention is adapted to be disposed on a setting surface of a slit coating head and shield a portion of one of the first shunt tubes on the setting surface to change the slit coating head Coating width. The clip includes a first plate portion, a second plate portion, and a third plate portion. The second plate portion and the third plate portion are coupled to one side of the first plate portion and extend in the same direction. The second plate portion is spaced apart from the third plate portion to form a main flow path between the second plate portion and the third plate portion, and the main flow channel is configured to connect the first shunt tube. The second plate portion has a first branching passage. The first shunt has an opposite open end and a closed end. The open end is connected to the main flow path, and the shortest distance from the open end to the first plate portion is greater than the shortest distance from the closed end to the first plate portion. The second plate portion is for covering a portion of the first shunt tube, and the closed end of the first shunt channel of the second plate portion is for exposing another portion of the first shunt tube.

A slit coater according to the present invention comprises a coating head and a clip. The coating head has a setting surface and a first shunt tube at the setting surface. The clip is placed on the setting surface. The clip includes a first plate portion, a second plate portion, and a third plate portion. The second plate portion and the third plate portion are coupled to one side of the first plate portion and extend in the same direction. The second plate portion is spaced apart from the third plate portion to form a main flow path between the second plate portion and the third plate portion, and the main flow channel is used for connecting the flow tube. The second plate portion has a first branching passage. The first shunt has an opposite open end and a closed end. The open end is connected to the main flow path, and the shortest distance from the open end to the first plate portion is greater than the shortest distance from the closed end to the first plate portion. Wherein the second plate portion covers over a portion of the first shunt tube, and the closed end of the first shunt channel of the second plate portion exposes another portion of the first shunt tube.

The clip disclosed in the present invention and the slit coater using the same have a first branch passage for the second plate portion of the clip for covering the first shunt tube, and the first branch passage has an opening for connecting the main flow passage And exposing the closed end of the first shunt tube, so that the clip covers the first shunt tube with the second plate portion to change the coating width, the first shunt tube enters below the second plate portion without directly entering the mainstream The paint of the track does not generate stagnation, but can be further discharged from the closed end of the first shunt tube from the second plate portion, and guided by the first shunt channel and then merged to the main flow channel. Thereby, the conventional clip for the slit coating head can effectively solve the problem that the paint stagnation deteriorates and affects the coating operation and the yield.

The above description of the present disclosure and the following description of the embodiments are intended to illustrate and explain the spirit and principles of the present invention, and to provide a further explanation of the scope of the patent application of the present invention.

The detailed features and advantages of the present invention are described in detail below in the embodiments, which are sufficient to enable those skilled in the art to understand the technical contents of the present invention and to implement the present invention. The related objects and advantages of the present invention can be easily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but do not limit the scope of the present invention in any way.

In addition, the embodiments of the present invention are disclosed in the following drawings. For the sake of clarity, the details of the invention will be described in the following description. However, it should be understood that these practical details are not intended to limit the present invention.

Moreover, some of the conventional structures and components may be illustrated in a simple schematic manner for the purpose of neatness. In addition, some of the features in the drawings may be slightly enlarged or changed in proportion or size for the purpose of understanding and viewing the technical features of the present invention, but this is not intended to limit the present invention. The actual size and specifications of the products manufactured in accordance with the disclosure of the present invention should be adjusted according to the requirements at the time of production, the characteristics of the product itself, and the contents disclosed in the following with the present invention, which is hereby stated.

In addition, the terms "end", "part", "part", "area", "here", etc. may be used in the following to describe specific elements and structures or specific technical features thereon or between them, but these elements And the structure is not limited by these terms. In the following, the term "and/or" may also be used, which refers to a combination comprising one or all of the listed related elements or structures. Terms such as "substantially", "substantially", "about" or "approximately" may also be used in the following context, when used in combination with size, concentration, temperature or other physical or chemical properties or characteristics, intended to cover possible There is a deviation in the upper and/or lower limits of the range of such properties or characteristics, or an acceptable deviation resulting from tolerances in manufacturing or analysis, but the desired effect can still be achieved.

Furthermore, all terms or terms used herein, including technical and scientific terms and terms, have their ordinary meanings, and their meanings are understood by those skilled in the art. Furthermore, the definitions of the above terms or terms should be interpreted in this specification as having the same meaning as the related art fields of the present invention. Unless otherwise specifically defined, these terms or terms are not to be construed as too idealistic or formal.

First, referring to FIGS. 1 to 2, a first embodiment of the present invention provides a slit coater 1a comprising a shim or shim plate 10a and a slot die or A slot die head 20a, wherein the slit coating head described herein may be simply referred to as a "coating head" hereinafter.

The coating head 20a includes a first body 201a and a second body 202a. The clip 10a is disposed on the setting surface S of the first body 201a, and the second body 202a is pivoted on one side of the first body 201a to be covered. On the first body 201a, the clip 10a is exposed by the common clamping of the clip 10a or relative to the first body 201a. It should be noted that the coating head 20a of the present embodiment is merely an example for explaining the present invention, and the present invention is not limited thereto. For example, in other embodiments, the first body and the second body of the coating head may not be connected through the pivot as in FIG. 1, but may be assembled by other fixing methods such as screw locking.

Further, in the embodiment, the first body 201a has a first shunt tube 2101a and a second shunt tube 2102a on the setting surface S thereof. The lengths of the first shunt tube 2101a and the second shunt tube 2102a are substantially the same. In design, the lengths of the first shunt tube 2101a and the second shunt tube 2102a are substantially equal to the maximum width at which the coating head 20a can be discharged, but the present invention is not limited thereto. The length of the first shunt tube or the second shunt tube herein refers to the length of the long sides of the first shunt tube and the second shunt tube. Further, in terms of relative position, the first shunt tube 2101a is closer to the pivot axis (not numbered) of the first body 201a and the second body 202a than the second shunt tube 2102a. Therefore, the first shunt tube 2101a may also be referred to as an inner flow tube, and the second shunt tube 2102a may be referred to as an outer flow tube.

In addition, the first body 201a further has a paint feeding port F connected to the first shunt tube 2101a. The paint injection port F can be connected to a paint source (not shown) to inject the paint into the first shunt tube 2101a.

Further, please refer to FIG. 3, which is a side cross-sectional view of the slit coater 1a of the first embodiment. In this embodiment, the first body 201a and the second body 202a have a first wedge portion 2011a and a second lip portion 2021a which are slightly wedge-shaped at one end away from the pivot axis (not labeled), when the first body 201a and the first body 201a are When the second body 202a is relatively closed, a coating slit G is formed between the first lip portion 2011a and the second lip portion 2021a, which is an outlet for the coating head 20a to extrude the paint, and the width and height thereof can be coated according to the actual application. The demand for cloth is adjusted, and the new model is not limited to this. As shown, the clip 10a is located in the coating slit G.

In addition, the first shunt tube 2101a and the second shunt tube 2102a are separated by a partition portion 2103, and the second shunt tube 2102a is closer to the first lip portion 2011a than the first shunt tube 2101a, that is, the second shunt tube 2102a is first. The shunt tube 2101a is adjacent to the outlet from which the paint is extruded. When the first body 201a and the second body 202a are relatively closed, the paint may be injected into the first shunt tube 2101a from the paint injection port F and passed through the partition portion 2103 to enter the second shunt tube 2102a, and then flowed from the second shunt tube 2102a. The slit G is formed to be extruded from the coating head 20a from the coating slit G.

Next, please refer to FIG. 4 , which is a partially enlarged side cross-sectional view of the first body 201 a of FIG. 3 . In this embodiment, the first shunt tube 2101a is defined to have a cross-sectional area A1, a first depth D1, a first discharge angle R1, a first width W1, and a second shunt tube 2102a having a cross-sectional area A2. a second depth D2, a second discharge angle R2, and a second width W2. The cross-sectional area as used herein refers to the size of the cross-sectional area of the first shunt tube 2101a and the second shunt tube 2102a in the plane of the figure; the depth refers to the first shunt tube 2101a and the second shunt tube 2102a. The distance from the plane where the setting surface S of the first body 201a is located (as shown in the reference plane P) to the respective bottom portions; the discharging angle means that the first shunt tube 2101a and the second shunt tube 2102a are close to the first The angle between the inclined surface on one side of the lip portion 2011a and the setting surface S of the first body 201a; and the width refers to the first shunt tube 2101a and the second shunt tube 2102a near the first lip portion 2011a. The distance between one side and the other side away from the first lip portion 2011a. In addition, as shown, the first shunt tube 2101a has a first long side 21011 away from the first lip portion 2011a and a second long side 21012 near the first lip portion 2011a, and the second shunt tube 2102a has a distance away from the first a first long side 21021 of a lip portion 2011a and a second long side 21022 adjacent to the first lip portion 2011a. The first width W1 refers to the first long side 21011 and the second long length of the first shunt tube 2101a. The distance of the side 21012, and the aforementioned second width W2, refers to the distance between the first long side 21021 of the second shunt tube 2102a and the second long side 21022.

In this embodiment, for example, in a region near the center of the first shunt tube 2101a and the second shunt tube 2102a, the cross-sectional area A1 of the first shunt tube 2101a may be at least larger than the cross-sectional area A2 of the second shunt tube 2102a; the first shunt tube The first discharge angle R1 of the second splitter tube 2102a may be greater than the second discharge angle R2 of the second shunt tube 2102a, wherein the first discharge angle R1 and the second discharge angle R2 may be, for example, 0 to 90 degrees, which is more common. It is 30-90 degrees. For example, in an embodiment, the first discharge angle R1 is, for example, between 40 degrees and 90 degrees, and the second discharge angle R2 is, for example, between 30 degrees and 90 degrees; the first shunt tube 2101a is first. The depth D1 may be greater than the second depth D2 of the second shunt tube 2102a; and the first width W1 of the first shunt tube 2101a may be greater than the second width W2 of the second shunt tube 2102a. Thereby, the coating can be firstly injected into the first shunt tube 2101a from the coating injection port F, and the coating uniformity can be improved.

However, it is to be noted that the size of the cross-sectional area of the region near the both ends of the first shunt tube 2101a and the second shunt tube 2102a is not limited to the aforementioned dimensional relationship, and, in the present embodiment, the first shunt tube 2101a and the first The cross-sectional area of the two-shunt tube 2102a is constant from one end to the other end, that is, the cross-sectional area of the first shunt tube 2101a and the second shunt tube 2102a does not change, but the present invention is not the first shunt tube and/or the second shunt tube. The shape of the tube as a whole is limited. For example, in an embodiment, the cross-sectional area of the first shunt tube and/or the second shunt tube may also be an indefinite value, for example, the cross-sectional area of the central region may be larger than the cross-sectional area at both ends thereof, and the first The cross-sectional area of the two ends of the shunt tube may be less than or equal to the cross-sectional area of the two ends of the second shunt tube, and the discharge angle, depth and width of the two ends of the first shunt tube may also be smaller than or equal to the discharge angle of the second shunt tube. Size, depth and width.

Further, in the present embodiment, it is also defined that the partition portion 2103 has a third width W3, and the first lip portion 2011a has a fourth width W4, since the widths of the two portions are for subsequent setting when the clip 10a is set The width of the two slit regions through which the coating can flow, and thus the third width W3 can also be regarded as the first slit length, and the fourth width W4 can also be regarded as the second slit length. The third width W3 refers to the distance between the first shunt tube 2101a and the second shunt tube 2102a, and the fourth width W4 refers to the distance between the second shunt tube 2102a to the tip end (not labeled) of the first lip portion 2011a. That is, the width of the first lip portion 2011a can also be understood as the flow distance from the second shunt tube 2102a to the extruded flow. In this embodiment, the third width W3 of the partition portion 2103 is at least smaller than the fourth width W4 of the first lip portion 2011a, that is, the distance between the first shunt tube 2101a and the second shunt tube 2102a is smaller than that of the first lip portion 2011a. The width helps to alleviate the paint flowing out of the second shunt tube 2102a and prevents the paint from flowing out of the second shunt tube 2102a in a short period of time, but the present invention is not limited thereto.

In fact, the size, the proportional relationship between the first shunt tube 2101a and the second shunt tube 2102a, and the relative relationship between the first shunt tube 2101a and the surrounding components can be based on characteristics such as paint type, rheology, temperature, and/or coating. Adjustments such as demand. For example, in other embodiments, the first shunt tube and the second shunt tube of the coating head may only satisfy the condition that the cross-sectional area A1 is greater than the cross-sectional area A2 and the first discharge angle R1 is greater than the second discharge angle R2. The magnitude relationship between the depth of a shunt tube and the second shunt tube and the width may be different from that of the foregoing embodiment; or, in other embodiments, the first body as described above may also be disposed on the second body. The shunt tube and the second shunt tube or the first shunt tube and the second shunt tube are respectively disposed on the first body and the second body.

5 to 6, FIG. 5 is a plan view of the clip 10a and the first body 201a of FIG. 1, and FIG. 6 is a plan view of the clip 10a of FIG.

One of the functions of the clip 10a is that it can be assembled on the coating head 20a to change the coating width of the coating head 20a. It should be noted that the present invention is not limited to the thickness of the clip 10a, and its thickness can be adjusted according to actual needs. In addition, the clip 10a can be made of plastic or metal material, and the material can be selected according to actual needs, and the present invention is not limited thereto. In addition, the manner in which the clip 10a is fixed to the coating head 20a can be locked by screws, for example, but the present invention is not limited thereto, and the screws of the locking clip are not shown.

As shown, the clip 10a is, for example, an integrally formed structure that can include a first plate portion 100a, a second plate portion 200a, and a third plate portion 300a. The first plate portion 100a has a bridging side 101a, and the second plate portion 200a and the third plate portion 300a are both coupled to the bridging side 101a of the first plate portion 100a and both extend in a direction away from the first plate portion 100a. That is, the second plate portion 200a and the third plate portion 300a are coupled to the same side of the first plate portion 100a and extend in the same direction. Further, the second plate portion 200a is spaced apart from the third plate portion 300a by a distance therebetween to form a main flow path C1a. The main flow passage C1a has a discharge opening O1, and the discharge opening O1 is located at one discharge side 11a of the clip 10a, which is an outlet through which the coating material can be extruded when the clamp member 10a is disposed on the coating head 20a, and the discharge opening O1. There is a coating width CW1 which is the width of the outlet from which the coating material can be extruded when the clip 10a is placed on the coating head 20a. The discharge side refers to the side on which the clip is designed to discharge the paint. The size of the coating width CW1 (ie, the size of the discharge opening O1) is determined by the pitch of the second plate portion 200a and the third plate portion 300a at the edge of the discharge side 11a, or The distance between the second plate portion 200a and the third plate portion 300a away from the edge of the first plate portion 100a is determined.

Further, in the embodiment, the second plate portion 200a and the third plate portion 300a each include a first blocking portion 210a, a second blocking portion 220a, and a third blocking portion 230a. Since the third plate portion 300a and the second plate portion 200a are substantially mirror-symmetrical structures, the second plate portion 200a will be exemplified below, and the third plate portion 300a and the second plate portion 200a will be identical. No longer.

In the second plate portion 200a, the first blocking portion 210a and the second blocking portion 220a are both connected to the bridging side 101a of the first plate portion 100a and maintained at a distance. As shown in the figure, the first blocking portion 210a and the second blocking portion 220a are arranged side by side at intervals, and extend from the bridging side 101a of the first plate portion 100a toward the discharge side 11a. The third blocking portion 230a is coupled to the second blocking portion 220a and extends toward the first blocking portion 210a and protrudes toward the third plate portion 300a. The third blocking portion 230a is located at a side of the first blocking portion 210a away from the first plate portion 100a and at a distance from the first blocking portion 210a.

More specifically, the first blocking portion 210a has a first side 211a, a second side 212a and a third side 213a. The second side 212a and the third side 213a are respectively located on opposite sides of the first blocking portion 210a and connected to the bridge side 101a, and the first side 211a is coupled between the second side 212a and the third side 213a and faces the third blocking portion. 230a. The second blocking portion 220a has a fourth side 221a facing the third side 213a of the first blocking portion 210a and engaging the bridging side 101a and the third blocking portion 230a. The third blocking portion 230a has a fifth side 231a, a sixth side 232a and a seventh side 233a. The fourth side 221a of the second blocking portion 220a is connected to the bridging side 101a and the fifth side 231a, and the sixth side 232a is located. The third blocking portion 230a is away from one side of the bridging side 101a (ie, on the discharge side 11a of the clip 10a), and the seventh side 233a is engaged between the fifth side 231a and the sixth side 232a, and faces the third plate portion. 300a.

The bridge side 10a of the first plate portion 100a, the second side 212a of the first blocking portion 210a of the second plate portion 200a and the third plate portion 300a, and the seventh side of the third blocking portion 230a are viewed as a whole with respect to the clip 10a. 233a collectively surrounds the aforementioned main flow path C1a. In addition, in the present embodiment, the second blocking portion 200a has a first bypass passage C2a, which is a bridge side 101a of the first plate portion 100a, a first side 211a and a third side 213a of the first blocking portion 210a, The fourth side 221a of the second blocking portion 220a and the fifth side 231a of the third blocking portion 230a are collectively surrounded. The first branch passage C2a has a first closed end C2a1 and a first open end C2a2. As shown in FIG. 6, the first closed end C2a1 is surrounded by, for example, the third side 213a of the first blocking portion 210a, the bridging side 101a of the first plate portion 100a, and the fourth side 221a of the second blocking portion 220a. And the first open end C2a2 is surrounded by, for example, the first side 211a of the first blocking portion 210a, the fifth side 231a of the third blocking portion 230a, and the fourth side 221a of the second blocking portion 220a, and The first open end C2a2 is connected to one side of the main flow path C1a, and the first open end C2a2 is located farther from the first plate portion 100a of the clip 10a than the first closed end C2a1. Specifically, the shortest distance from the first open end C2a2 to the first plate portion 100a is greater than the shortest distance from the first closed end C2a1 to the first plate portion 100a. The shortest distance from the first open end C2a2 to the first plate portion 100a may be regarded as the shortest distance between the fourth side 221a of the second blocking portion 220a of the first open end C2a2 and the bridging side 101a of the first plate portion 100a ( As shown in FIG. 6, d1) is the length of the third side 213a of the first blocking portion 210a in this embodiment; and the first closed end C2a1 directly connects to the bridging side 101a of the first plate portion 100a, so the two The shortest distance between them is substantially zero.

Similarly, the third plate portion 300a has a second shunting channel C3a. The second shunting channel C3a also has a second closed end C3a1 and a second open end C3a2. The second open end C3a2 is connected to the main channel. The other side of C1a, and the second open end C3a2 is located farther from the first plate portion 100a of the clip 10a than the second closed end C3a1. As shown, the first splitter C2a and the second splitter C3a are substantially It is a mirror-symmetrical structure, so the details of its details are not mentioned here.

Next, regarding the mounting of the clip 10a, please refer to FIGS. 6-7. FIG. 7 is a partially enlarged schematic view showing the clip 10a being mounted on the setting surface S of the first body 201a of the coating head 20a. And in order to keep the drawing simple, the second body 202a is omitted in FIG. Further, since the third plate portion 300a and the second plate portion 200a are substantially mirror-symmetrical structures, FIG. 7 is only described by taking the second plate portion 200a as an example.

As shown, the bridging side 101a of the first plate portion 100a of the clip 10a can be aligned with the first long side 21011 of the first shunt tube 2101a, and the first blocking portion 210a of the second plate portion 200a spans the first shunt tube 2101a. The first portion 211a of the first blocking portion 210a can be aligned with the first long side 21021 of the second shunt tube 2102a, and the second blocking portion 220a of the second plate portion 200a can be aligned with the first shunt tube 2101a. The short side (not numbered) of the second shunt tube 2102a, and the third blocking portion 230a of the second plate portion 200a is located on the first lip portion 2011a of the first body 201a, and the fifth side 231a of the third blocking portion 230a The second long side 21022 of the second shunt tube 2102a is aligned.

With this configuration, the second plate portion 200a and the third plate portion 300a of the clip 10a will shield the first shunt tube 2101a of the portion, so that the coating width of the coating from the coating head 20a will be limited by the clip 10a. The discharge opening O1 of the main flow path C1a is sized to achieve the effect of changing the coating width (i.e., CW1 indicated in Fig. 6).

Meanwhile, although the second plate portion 200a and the third plate portion 300a cover a part of the first shunt tube 2101a, the second plate portion 200a and the third plate portion 300a have the first shunting channel C2a and the second shunting channel C3a, respectively. The first shunt tube 2101a can be connected to the second shunt tube C3a1 through the first closed end C2a1, so that the first shunt tube 2101a can also communicate with the main shunt channel C1a from the first shunting channel C2a and the second shunting channel C3a. In the shunt tube 2101a, the second plate portion 200a and the third plate portion 300a of the clip 10a cover/block the underlying paint without stagnation, but may be from the first splitter C2a and the second splitter C3a. The traffic is guided into the main channel C1a.

It can be seen that when the clip 10a is provided to change the coating width, the coating in the first shunt tube 2101a blocked by the clip 10a without directly entering the main channel C1a does not cause stagnation, but can be further from both sides. The first runner C2a and the second runner C3a are guided to merge with the paint of the main runner C1a. Thereby, the conventional clip for the slit coating head can effectively solve the problem that the paint stagnation deteriorates and affects the coating operation and the yield.

For example, please compare FIG. 8 with FIG. 9, which is a flow field simulation diagram of the slit coater 1a of the first embodiment, and FIG. 9 is a flow field simulation of a slit coater using a conventional clip. Figure 8 and Figure 9 are the results of simulations performed on the same coating head with the same coating width, the same coating, and at the same flow rate, the difference between the two is only in the clip. different. Moreover, in order to make the drawings easy to view, Figures 8 and 9 are shown in a partially enlarged manner without showing a complete slot coater, and the respective clips will be shown in dashed lines.

It can be seen from Fig. 8 that the paint in the first shunt tube that is blocked by the clips and does not directly enter the main flow channel does not cause stagnation, but can be guided from the first shunt passage to meet the paint of the main flow channel. In contrast, the clip of Figure 9 lacks the first shunt, so the paint will stagnate in the area covered by the clip (the stagnation area indicated by the arrow in the figure), resulting in deterioration and uneven flow. Affects problems such as coating thickness.

However, it should be added that the actual value of the width of the runner should be adjusted according to different requirements of coating, coating type, rheology, temperature and/or other coating characteristics. limit. For example, in an embodiment, the width of the first shunt of the clip may be between about 5 mm and 15 mm; or, in another embodiment, the first shunt of the clip The width can even be reduced to about 1 mm.

In addition, the clip of the first embodiment is exemplified by the fact that the second plate portion and the third plate portion each have a branching passage, but the present invention is not limited thereto. For example, please refer to FIG. 10, which is a plan view of a slit coater according to a second embodiment of the present invention, but it is reminded that the second embodiment is omitted for convenience of explanation. This embodiment provides a slit coater 1b comprising a clip 10b and a coating head 20b, wherein the coating head 20b is substantially the same as the coating head 20a of the previous embodiment, and thus no longer Narration. In this embodiment, the clip 10b includes a first plate portion 100b, a second plate portion 200b, and a third plate portion 300b. The main difference from the foregoing embodiment is that the third plate portion 300b has only the second portion. The blocking portion 220b does not have any structure of the branching passage. Therefore, in the clip 10b, there is still one main flow path C1b, but only the second plate portion 200b has the first flow path C2b. It can be understood from the above-described simulation diagrams of Figs. 8-9 that even if there is only a single splitter (i.e., the first splitter C2b) as shown by the clip 10b, the problem of splitting the paint to avoid stagnation of the paint can be achieved.

Furthermore, the clips of the foregoing embodiments are all provided in an environment in which the coating head has two flow tubes (ie, dual flow tubes), but the present invention is not limited thereto. For example, please refer to FIGS. 11 to 12, FIG. 11 is a plan view of a slit coater according to a third embodiment of the present invention, and FIG. 12 is a slit coat according to a third embodiment of the present invention. A partial enlarged view of the device, but it is noted that the second embodiment is omitted for ease of explanation.

As shown in Fig. 11, this embodiment proposes a slit coater 1c comprising a clip 10c and a coating head 20c. The clip 10c includes a first plate portion 100c, a second plate portion 200c, and a third plate portion 300c. The clip 10c is similar to the clip 10b of the foregoing embodiment, and is also provided only in the second plate portion 200c with the first branch passage C2c connected to one side of the main flow path C1c, but in proportion to the coating head 20c. There is an adaptive adjustment, and therefore, the same as the foregoing embodiment will not be described again. As for the coating head 20c, the difference from the coating head of the foregoing embodiment is mainly that the coating head 20c has only a single flow tube 2101c, but the size of the flow tube 2101c is only for illustrative purposes, and the present invention is not limited thereto. .

In this case, the clip 10c can still achieve the problem of splitting the paint to avoid stagnation of the paint. As shown in FIG. 12, the first barrier portion 210c of the second plate portion 200c of the clip 10c in the flow tube 2101c covers/blocks the underlying paint and still does not generate stagnation, but can be from the first split channel C2c. The first closed end C2c1 flows into the first divided flow path C2c, and the first open end C2c2 from the first divided flow path C2c is further guided by the first divided flow path C2c to flow into the main flow path C1c. That is, when the clip 10c is provided to change the discharge width, the paint in the flow tube 2101c blocked by the clip 10c without directly entering the main flow path C1c does not cause stagnation, but can be further from the side thereof. The first runner C2c flows back to the main flow channel C1c and merges with the paint of the main flow channel C1c, which can effectively solve the problem that the conventional clip for the slit coating head has paint stagnation deterioration and affects the coating operation and the yield. problem.

For example, please compare FIG. 13 with FIG. 14, which is a flow field simulation diagram of the slit coater 1c of the third embodiment, and FIG. 14 is a flow field simulation of a slit coater using a conventional clip. Figure 13 and Figure 14 are the results of simulations performed on the same coating head with the same coating width, the same coating, and at the same flow rate. The difference between the two is only in the clip. different. Moreover, in order to facilitate the viewing of the drawings, Figures 13 and 14 are shown in a partially enlarged manner without showing the complete slot coater, and the individual clips will be shown in dashed lines.

It can be seen from Fig. 13 that the coating in the flow tube of the coating head which is blocked by the clip without direct access to the main channel of the clip does not cause stagnation, but can be guided from the first shunt of the clip. Meet the paint of the mainstream road. In contrast, the clip of Figure 14 lacks the first shunt, so the paint will stagnate in the area covered by the clip (the stagnation area indicated by the arrow in the figure), resulting in deterioration and uneven flow. Affects problems such as coating thickness.

According to this, it is known that the design of the shunt to connect the main flow path and the flow tube in the structure for covering the flow tube on the clip is within the scope of the present invention. Therefore, the present invention is not limited to the shape, material, or desired coating width of the clip. Under this premise, those skilled in the art can rely on the actual uniformity of coating, the shape and number of flow tubes, the size of the coating slit, the pressure of coating, the viscosity of the coating, the temperature and/or Or other coating characteristics and the like to adjust the shape of the clip to adjust the size of the first barrier portion, the second barrier portion and/or the third barrier portion on the second plate portion and/or the third plate portion of the clip , shape and proportion, etc., in order to obtain the shape and size of the appropriate runner according to the aforementioned requirements.

For example, it will be described based on the clip 10a of Fig. 7. In other embodiments, the first plate portion may also be replaced with a first long side that is not aligned with the first shunt tube, but covers a portion of the first shunt tube; or, in other embodiments, the second plate portion The third side of the first blocking portion, the bridging side of the first plate portion, and the fourth side of the second blocking portion may also be changed to a continuous arc shape, that is, the first closed end of the first branching channel of the clip Instead, it is composed of a circular arc wall; or, in other embodiments, the first split runner may be changed from a slightly L-shaped to a parallelogram; or, in other embodiments, the second panel A blocking portion may also be lengthened to slightly cover a portion of the second shunt tube; or, in other embodiments, the seventh side of the third blocking portion of the second plate portion may also be changed to a beveled surface to cause the main channel to exit The material opening has a shape that tapers or diverges from the inside to the outside; or, in other embodiments, the second side of the first blocking portion of the second plate portion and the seventh side of the third blocking portion may also be changed to Misplaced rather than aligned. In the above-mentioned example of the clip, as long as the branching channel can connect the part of the flow tube and communicate with the main channel, it belongs to the scope of the present invention. Therefore, with respect to the clip applied to the single flow tube (such as the clip 10c of the aforementioned Fig. 12), the shape of the clip can also be adjusted in accordance with the changes listed above.

In addition, the foregoing embodiments are all examples in which the clip is disposed on a coating head having only a single coating slit, but the present invention is not limited thereto. For example, please refer to FIG. 15 , which is a side cross-sectional view of a slit coater according to a fourth embodiment of the present invention, wherein the hatching is omitted for the purpose of simplicity. As shown in the figure, the present embodiment provides a slit coater 1d having a coating head 20d having two coating slits G1 and G2 at the same time, and the user can select the clip 10a of the foregoing embodiment according to requirements. ~10c is installed in the coating slits G1, G2, as shown in the figure, for example, the aforementioned clips 10c can be respectively disposed in the coating slits G1, G2 of the coating head 20d to achieve one-time coating. The effect of a coating having the same or different widths of multiple layers. For another example, referring to FIG. 16, a slit coater 1e is proposed which differs from the slit coater 1d in that each of the coating slits G1, G2 has the first and second coating heads as described above. In the shunt tube, for example, the clips 10a and 10b described above may be respectively disposed in the coating slits G1 and G2 of the coating head 20e.

In addition to this, for example, referring to Fig. 17, a slit coater 1f is proposed which differs from the slit coater 1d in that it has three coating slits G1, G2 at the same time as the coating head 20f. G3 Here, for example, the aforementioned clips 10c may be provided in the coating slits G1, G2, and G3, respectively. For another example, referring to FIG. 18, a slit coater 1g is proposed which differs from the slit coater 1f in that the coating slits G1, G2, and G3 have the first and the first coating heads as described above. In the two-shunt tube, for example, the aforementioned clips 10a and 10c may be respectively disposed in the coating slits G1, G2, and G3 of the coating head 20g.

According to the foregoing clip of the present invention and the slit coater using the same, since the second plate portion of the clip for covering the first shunt tube has a first branching passage, and the first branching passage has an open end connected to the main flow passage. And exposing the closed end of the first shunt tube, so that when the clip covers the first shunt tube with the second plate portion to change the coating width, the first shunt tube enters below the second plate portion without directly entering the main channel The paint does not generate stagnation, but can be additionally discharged from the closed end of the first shunt tube from the second plate portion, and guided by the first shunt channel and then merged to the main flow channel. Thereby, the conventional clip for the slit coating head can effectively solve the problem that the paint stagnation deteriorates and affects the coating operation and the yield.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the present invention. The changes and refinements of the present invention are within the scope of the patent protection of the present invention without departing from the spirit and scope of the present invention. Please refer to the attached patent application for the scope of protection defined by this new model.

1a, 1b, 1c, 1d, 1e, 1f, 1g‧‧‧ slit applicator

10a, 10b, 10c, 10d‧‧‧ clips

20a, 20b, 20c, 20d, 20e, 20f, 20g‧‧‧ coating head

100a, 100b, 100c‧‧‧ first board

101a‧‧‧Bridge side

200a, 200b, 200c‧‧‧ second board

210a, 210c‧‧‧ first barrier

211a‧‧‧ first side

212a‧‧‧ second side

213a‧‧‧ third side

220a, 220b, 220c‧‧‧ second barrier

221a‧‧‧ fourth side

230a‧‧ Third Block

231a‧‧‧ fifth side

232a‧‧‧ sixth side

233a‧‧‧ seventh side

300a, 300b, 300c‧‧‧ third board

2103‧‧‧Departure

201a‧‧‧First subject

202a‧‧‧Second subject

2011a‧‧‧First lip

2021a‧‧‧second lip

2101a‧‧‧First shunt

2102a‧‧‧Second shunt

2101c‧‧‧Flow tube

21011‧‧‧First long side

21012‧‧‧Second long side

21021‧‧‧First long side

21022‧‧‧Second long side

A1, A2‧‧‧ cross-sectional area

C1a, C1b, C1c‧‧‧ mainstream roads

C2a, C2b, C2c‧‧‧ first runner

C2a1, C2c1‧‧‧ first closed end

C2a2, C2c2‧‧‧ first open end

CW1‧‧‧ coating width

D1‧‧‧ shortest distance

D1‧‧‧first depth

D2‧‧‧second depth

F‧‧‧ paint injection port

G, G1, G2, G3‧‧‧ coating slit

R1‧‧‧first discharge angle

R2‧‧‧second discharge angle

O1‧‧‧ discharge opening

P‧‧‧ reference plane

S‧‧‧Setting surface

W1‧‧‧ first width

W2‧‧‧ second width

W3‧‧‧ third width

W4‧‧‧ fourth width

1 is a perspective view of a slit coater according to a first embodiment of the present invention. 2 is an exploded perspective view of the slit coater of FIG. 1. 3 is a side cross-sectional view showing a slit coater according to a first embodiment of the present invention. 4 is a partially enlarged side cross-sectional view showing the first body of FIG. 3. Figure 5 is a top plan view of the clip of Figure 1 and the first body. Figure 6 is a plan view of the clip of Figure 1. Fig. 7 is a partially enlarged schematic view showing a slit coater according to a first embodiment of the present invention. Fig. 8 is a flow field simulation diagram of the slit coater according to the first embodiment of the present invention. Figure 9 is a flow field simulation of a conventional slot coater. Figure 10 is a plan view showing a slit coater in accordance with a second embodiment of the present invention. Figure 11 is a plan view showing a slit coater in accordance with a third embodiment of the present invention. Figure 12 is a partially enlarged schematic view showing a slit coater in accordance with a third embodiment of the present invention. Figure 13 is a flow field simulation diagram of a slit coater in accordance with a third embodiment of the present invention. Figure 14 is a flow field simulation diagram of a conventional slit coater. Figure 15 is a side cross-sectional view showing a slit coater in accordance with a fourth embodiment of the present invention. Figure 16 is a side cross-sectional view showing a slit coater in accordance with a fifth embodiment of the present invention. Figure 17 is a side cross-sectional view showing a slit coater in accordance with a sixth embodiment of the present invention. Figure 18 is a side cross-sectional view showing a slit coater in accordance with a seventh embodiment of the present invention.

Claims (11)

A clip adapted to be disposed on a setting surface of a slit coating head and shielding a portion of one of the first shunt tubes on the setting surface to change a coating width of the slit coating head The clip includes: a first plate portion, a second plate portion, and a third plate portion, the second plate portion and the third plate portion are coupled to one side of the first plate portion and extend in the same direction The second plate portion is spaced apart from the third plate portion to form a main flow path between the second plate portion and the third plate portion, and the main flow channel is configured to connect to the first shunt tube. The second plate portion has a first shunting channel, the first shunting channel has a first open end and a first closed end, the first open end is connected to the main flow channel, and the first open end is connected to the first The shortest distance of a plate portion is greater than a shortest distance from the first closed end to the first plate portion; wherein the second plate portion is for covering a portion of the first shunt tube, and the second plate portion is The first closed end of the first shunt is for revealing another portion of the first shunt. The clip of claim 1, wherein the third plate portion has a second shunting channel, the second shunting channel has a second open end and a second closed end, the second open end is connected to the second open end a shortest distance from the second open end to the first plate portion is greater than a shortest distance from the second closed end to the first plate portion, wherein the third plate portion is for covering the first shunt tube And a second closed end of the second shunt of the third plate portion for revealing another portion of the first shunt tube. A slit coater comprising: a coating head having a setting surface and a first shunt tube at the setting surface; and a clip disposed on the setting surface, the clip comprising: a first a plate portion, a second plate portion and a third plate portion, the second plate portion and the third plate portion are coupled to one side of the first plate portion and extend in the same direction, the second plate portion and the second plate portion The third plate portion is spaced apart by a distance to form a main flow path between the second plate portion and the third plate portion, and the main flow channel is used for connecting the flow tube, and the second plate portion has a first flow channel The first branching channel has an opposite open end and a closed end, the open end is connected to the main flow channel, and the shortest distance from the open end to the first plate portion is greater than the shortest distance from the closed end to the first plate portion a distance; wherein the second plate portion covers a portion of the first shunt tube, and the closed end of the first shunt channel of the second plate portion exposes another portion of the first shunt tube. The slit coater of claim 3, wherein the third plate portion has a second splitter passage, the second split runner has an opposite second open end and a second closed end, the second The open end is connected to the main flow channel, and the shortest distance from the second open end to the first plate portion is greater than the shortest distance from the second closed end to the first plate portion, wherein the third plate portion covers the first shunt Above one portion of the tube, the second closed end of the second shunt of the third plate portion reveals another portion of the first shunt tube. The slit coater of claim 3, wherein the coating head further has a second shunt tube on the setting surface, the second shunt tube is juxtaposed with the first shunt tube and maintained at a distance, And the second shunt tube communicates with the first shunt tube via the first shunting channel. The slit coater of claim 5, wherein the coating head comprises a first body and a second body assembled to each other, the first body having a first lip and the setting surface, The second body has a second lip, and the first lip and the second lip together form a coating slit, and the second shunt is closer to the first lip than the first shunt. The slit coater of claim 5, wherein a cross-sectional area of the first shunt tube and the second shunt tube is a fixed value or an indefinite value. The slit coater of claim 6, wherein a distance between the first shunt tube and the second shunt tube is smaller than a width of the first lip portion. The slit coater of claim 6, wherein the first shunt tube has a first discharge angle between the surface of the first lip and the set mask, between 40 degrees and 90 degrees. The second shunt tube has a second discharge angle near the surface of the first lip and the set mask, between 30 degrees and 90 degrees. The slit coater of claim 3, wherein the coating head has a paint injection port connected to the first shunt tube. The slit coater of claim 3, wherein the coating head has at least one coating slit and at least one coating injection port that are in communication, and the at least one coating slit and the at least one coating injection The inlet is connected to the first shunt.