JP3244037U - Improved slot die coating system - Google Patents

Abstract

An improved slot die coating system is provided that optimizes uniformity of coating effect. An improved slot die coating system 1 includes a coating head main body 10 and a plurality of supply modules 20, and the coating head main body receives paint supplied by the supply modules and causes the paint to flow into a flow path 105, and further extends downward in the flow path. It can be applied by discharging through the slot nozzle 104. The coating head main body is composed of an upper die 11 and a lower die 12 having a trapezoidal cross section. The upper die and the lower die each have a first paste accommodation groove 1051 and a second paste accommodation groove 1052, and are mutually By overlapping, the first paste storage groove and the second paste storage groove form a flow path. A slot nozzle communicating with the flow path is formed at the lower end of the coating head body. [Selection diagram] Figure 1

Description

The present invention relates to coating systems, and more particularly to an improved slot die coating system that completes continuous and intermittent coatings simultaneously and non-simultaneously in a single step.

Slot die coating uses a slot-type coating head to extrude the paint through a slot nozzle and apply it onto the substrate to be coated.The slot-type long groove-shaped nozzle This makes it very suitable for coating large areas and can be used in conjunction with a conveying system such as rollers or conveyor belts to realize a continuous coating process.

However, conventional slot die coating has many application limitations. When the slot width is wide, or the paint has a high viscosity, or the process requirements increase the application speed, the temperature drop at both ends improves the effectiveness and uniformity of the application, along with the uniformity of the fluid within the die. This can greatly affect the properties of the coating, which can lead to variations in coating thickness and abnormal width.

Also, while slot die coating has very high coating efficiency, it is only compatible with continuous coating or single linear intermittent coating processes. For various increasingly complex coating conditions, such as simultaneous or non-simultaneous coating of multiple areas, continuous or intermittent coating of multiple areas, and their mixtures, it is very difficult to apply the known slot die coating, and continuous mass production is difficult. There are also difficulties in realizing this.

In view of this, the present invention presents an improved slot die coating system for the above-mentioned deficiencies.

The main objective of the present invention is to reduce the variation in fluid temperature within the die caused by wide slot widths or due to high paint viscosity or faster coating speeds due to process requirements, and the resulting dispersion. An object of the present invention is to provide an improved slot die coating system that can solve the problem of poor condition.

Another objective of the present invention is to enable simultaneous or non-simultaneous coating of a single or multiple areas, continuous or intermittent coating of multiple areas by slot die coating, and realize coating for various manufacturing needs in a single step. An object of the present invention is to provide an improved slot die coating system that significantly increases the adaptability of slot die coating and reduces process complexity and manufacturing costs.

The improved slot die coating system proposed by the present invention includes a coating head main body, the coating head main body has a flow path and a slot nozzle, the coating can be received and flowed into the flow path, and can be applied by the slot nozzle; The feature is that it has multiple supply modules and partition plates, each supply module communicates with the flow path independently of each other, and the partition plate corresponds to these supply modules and connects the flow path to multiple discharges. It is to separate the exit. This allows simultaneous or non-simultaneous coating of a single or multiple areas, and continuous or intermittent coating of multiple areas.

On the other hand, the improved slot die coating system proposed by the present invention can receive and apply the paint, and includes a plurality of coating head bodies, which are installed in parallel and each feed one supply independently of each other. Each coating head body has a flow channel and a slot nozzle, and receives the paint from the supply module, flows it into the flow channel, and applies it with the slot nozzle to coat single or multiple areas. Simultaneous or non-simultaneous application, continuous or intermittent application of multiple areas can be realized.

Hereinafter, the purpose, technical content, characteristics and achieved effects of the present invention can be more easily understood through detailed description of specific embodiments.

1 is a schematic diagram of a first embodiment of the improved slot die coating system of the present invention; FIG. 1 is an exploded schematic diagram of a first embodiment of the improved slot die coating system of the present invention; FIG. FIG. 2 is a schematic diagram of a spray coating state according to a first embodiment of the improved slot die coating system of the present invention; FIG. 2 is a schematic diagram of a spray coating state according to a first embodiment of the improved slot die coating system of the present invention; 2 is a schematic diagram of another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. FIG. 3 is an exploded schematic diagram of another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to another aspect of the first embodiment of the improved slot die coating system of the present invention; FIG. 3 is an exploded schematic diagram of another aspect of the first embodiment of the improved slot die coating system of the present invention. FIG. 3 is an exploded schematic diagram of another aspect of the first embodiment of the improved slot die coating system of the present invention. FIG. 3 is a schematic diagram of a spray coating state according to a second embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to a second embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to a second embodiment of the improved slot die coating system of the present invention; FIG. 3 is a schematic diagram of a spray coating state according to a second embodiment of the improved slot die coating system of the present invention;

In order to facilitate a clearer understanding of the advantages, spirit and features of the present invention, the present invention will be described and discussed in detail below with reference to the above-mentioned drawings together with the embodiments. It should be noted that these examples are merely representative examples of the present invention and are not intended to limit the embodiments of the present invention and the scope of the claimed claims to the aspects of these examples. The purpose of providing these examples is merely to provide a more thorough and easier understanding of the disclosure of the present invention.

The terms used in the various embodiments disclosed in the present invention are not used to limit the various embodiments disclosed in the present invention, but are used merely for the purpose of describing a particular embodiment. Unless clearly indicated otherwise, the singular forms used include the plural. Unless otherwise limited, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art with respect to the various embodiments disclosed herein. The above terms (e.g., terms defined in commonly used dictionaries) shall be construed to have the same meaning as the context in the same technical field, unless explicitly limited in the various embodiments disclosed in this invention; It is not to be interpreted as having an idealized or overly canonical meaning.

In the description of this specification, contents explained with reference to terms such as "one embodiment" and "specific embodiment" refer to specific features and structures described in connection with the embodiment. , material or feature is included in at least one embodiment of the present invention. As used herein, the exemplary descriptions of the above terms do not necessarily refer to the same embodiment. Additionally, the specific features, structures, materials, or features described may be related in any suitable manner in any one or more embodiments.

In the description of the present invention, it should be explained that unless otherwise specified or limited, terms such as "coupling", "connection", "installation" should be understood in a broad sense. For example, the connection may be mechanical or electrical, the two parts may be connected internally, they may be connected directly, or they may be connected via a medium in between. Those skilled in the art can understand the specific meanings of the above terms depending on the specific situation.

Please refer to FIGS. 1 and 2 for a first embodiment of the improved slot die coating system provided by the present invention. Consider situations where the fluid uniformity within the die is affected by temperature drop at both ends when the slot width is wide, the paint has a high viscosity, or the process requirements increase the application speed. The improved slot die coating system 1 includes a coating head main body 10 and a plurality of supply modules 20, and the coating head main body 10 receives the paint supplied by the supply modules 20 and causes it to flow into a flow path 105. It can be applied by discharging through the lower slot nozzle 104. As shown in the figure, the coating head main body 10 of the present invention is composed of an upper die 11 and a lower die 12 having a trapezoidal cross section. The first paste accommodating groove 1051 and the second paste accommodating groove 1052 form a flow path 105 by overlapping each other. A slot nozzle 104 communicating with a flow path 105 is formed at the lower end of the coating head body 10 .

As shown in the figure, the supply module 20 includes three sets including a first supply tank 21, a second supply tank 22, and a third supply tank 23. 23 are connected to the first inlet 101, the second inlet 102, and the third inlet 103 via the first supply pipe 211, the second supply pipe 221, and the third supply pipe 231, respectively, so that the flow path 105 An external pump or the like is used to supply the paint in the first supply tank 21, second supply tank 22, and third supply tank 23 to equipment such as the coating head main body 10. The geometry is the same as that used in known slot die coating heads. Therefore, systems for supplying paint such as external pumps are omitted from the drawings, and the improved slot die coating system 1 is mainly illustrated.

Referring to FIG. 2, only the upper die 11 has injection ports (first injection port 101, second injection port 102, and third injection port 103). 11 and the lower die 12 are merely illustrative that the coating head main body 10 is composed of two dies, and do not limit the vertical positional relationship. Further, both the upper die 11 and the lower die 12 may have injection ports, or the injection ports (first injection port 101, second injection port 102, and third injection port 103) may be located on the same die. It doesn't have to be. Similarly, the upper die 11 and the lower die 12 each have a first paste accommodating groove 1051 and a second paste accommodating groove 1052, forming a flow path 105. Depending on the actual usage situation, there may be paste receiving grooves only on a single die.

Continuing to refer to FIG. 3A, the plurality of supply modules 20 are independent of each other, that is, the first supply tank 21, the second supply tank 22, and the third supply tank 23 each independently control supply. As a result, the paste flows into the channel 105 from the first injection port 101, the second injection port 102, and the third injection port 103 via the first supply pipe 211, the second supply pipe 221, and the third supply pipe 231, respectively. I'm letting you do it. This eliminates any problems such as non-uniform fluid flow within the die due to wide slots, high paint viscosity, or high application speeds due to process requirements.

Specifically, the paste flows into the channel 105 from the first supply tank 21, the second supply tank 22, and the third supply tank 23, respectively. Unlike known designs with only one inlet, the distance that the paste entering from the first inlet 101, the second inlet 102 and the third inlet 103 has to travel is shorter and due to the temperature drop This eliminates the problem of non-uniform fluid within the die. As shown in the figure, if the substrate 52 is relatively thin or flexible, the roller 51 can be used to feed and coat the substrate; however, the roller 51 is merely an example; The roller 51 is not the only one used to feed and apply the material. Conveyor belts or any other method may be used. According to the improved slot die coating system 1 of the present invention, a continuous band-shaped coating pattern 53 can be completed and further dried in cooperation with a subsequent drying device 60. Since a plurality of independent supply modules 20 are employed, a very uniform application state can be achieved without being limited by production speed, application width, paste viscosity, etc.

In addition, the number and installation position of the plurality of supply modules 20 proposed by the present invention may be adjusted according to actual usage conditions. For example, when increasing the coating width, the number of supply modules 20 can be increased. Alternatively, the arrangement of the supply modules 20 can be adjusted (eg, not equidistant) to suit special patterns or different needs. Meanwhile, referring to FIG. 3B, by controlling the supply timing of the supply module 20, the intermittent coating pattern 53 can be completed. Similarly, the spacing between the coating patterns 53 can be adjusted to various widths and spacings depending on usage conditions.

In addition, when considering application to more complex coating patterns, such as coating multiple areas in a single process (see FIG. 6A), this can be achieved by a design that uses partition plates. Referring to FIGS. 4 and 5, a partition plate 30 is sandwiched between the upper die 11 and the lower die 12, and the partition plate 30 is designed in a comb shape according to the number of supply modules 20 described above, and has a plurality of Has a cutout. Specifically, there are four protrusions, a first protrusion 31, a second protrusion 32, a third protrusion 33, and a fourth protrusion 34, with a first notch 301 and a second notch between them. A notch 302 and a third notch 303 are respectively formed. Each cutout corresponds to one injection port, and paints supplied from different supply modules 20 are blocked by the partition plate 30 and discharged from the individual cutouts. The details are explained below.

As shown in FIG. 6A, the paint provided from the first supply tank 21 enters the flow path 105 via the first supply pipe 211 and the first injection port 101, and enters the first protrusion 31 of the partition plate 30. The liquid is discharged from the first notch 301 and applied while being restricted by the second protrusion 32 . The paint provided from the second supply tank 22 passes through the second supply pipe 221 and enters the flow path 105 through the second injection port 102, and enters the second protrusion 32 and third protrusion 33 of the partition plate 30. It is discharged from the second notch 302 and applied. The paint provided from the third supply tank 23 enters the flow path 105 via the third supply pipe 231 and the third injection port 103, and enters the third protrusion 33 and fourth protrusion 34 of the partition plate 30. It is discharged from the third notch 303 and applied. This allows continuous coating of multiple rows (or multiple areas) to be completed in a single step.

Similarly, referring to FIG. 6B, by controlling the supply timing of the supply module 20, an intermittent coating pattern 53 can be achieved. Similarly, as shown in FIGS. 6C-6D, non-simultaneous application or mixed application of continuous and intermittent application can also be achieved by controlling the length and timing of the supply time. On the other hand, in order to more stably control the fluid within the die, the flow path may be divided according to the number of supply tanks, and a plurality of completely independent designs may be provided. Referring to FIG. 7A, the upper die 11 has a plurality of first paste receiving grooves 1051A, 1051B, and 1051C that are completely independent and do not communicate with each other, and the lower die 12 correspondingly has a plurality of first paste receiving grooves that are completely independent and do not communicate with each other. 1052A, 1052B, and 1052C. Accordingly, after the upper die 11 and the lower die 12 are combined, a plurality of completely independent flow paths can be formed, and paste can be discharged and applied through the corresponding slot nozzles 1041, 1042, and 1043. Alternatively, in accordance with the design of the partition plate 30 described above, as shown in FIG. 7B, the partition plate 30 has four protrusions and a first notch 301, a second notch 302, and a third notch formed therebetween. The cutout 303 defines the required thickness of the slot nozzle. Compared to the above embodiment, in this embodiment, by adjusting the designed thickness of the partition plate 30, various pastes or required coating thicknesses can be accommodated.

Furthermore, based on the concept that a plurality of identical supply modules 20 are independent of each other, the coating head body 10 may be designed as a plurality of narrow coating head bodies and installed in parallel. Referring to FIG. 8A, it has a first coating head body 41, a second coating head body 42, and a third coating head body 43, each of which corresponds to a different supply module 20. As shown in the figure, the first coating head main body 41 is connected to the first supply tank 21 and the first supply pipe 211, the second coating head main body 42 is connected to the second supply tank 22 and the second supply pipe 221, and the third coating head main body 42 is connected to the second supply tank 22 and the second supply pipe 221. 43 corresponds to the third supply tank 23 and the third supply pipe 231, respectively. The structures of the first coating head main body 41, the second coating head main body 42, and the third coating head main body 43 are the same as the coating head main body 10 described above, and the first coating head main body 41, the second coating head main body 42, and the third coating head main body Each coating head body 43 has only one inlet and corresponds to a different supply module 20 . Similarly, mutually independent control by different supply modules 20 can also be realized.

As shown in FIG. 8A, the multiple coating head body design allows for continuous coating of multiple rows (or multiple areas) in a single step as described above. Alternatively, it is possible to realize intermittent coating by controlling the coating timing (see FIG. 8B), non-simultaneous coating by controlling the supply time length and timing, or mixed coating of continuous coating and intermittent coating (see FIGS. 8C to 8D). You can also do it.

Of course, although based on the same concept, the actual application pattern 53 can be adjusted depending on the use. Furthermore, the two previously described embodiments may be combined, for example a single long coating head body (with a corresponding plurality of supply modules) and a narrow coating head body (with a corresponding single supply module). or with a relatively small number of supply modules). Since the actual structure and operating principle are the same, they will not be described repeatedly here.

In summary, the improved slot die coating system proposed by the present invention supports a single long coating head body or multiple coating head bodies with a plurality of independent feeding modules. By controlling the timing of the supply module, continuous or intermittent coating of multiple rows (or multiple areas) can be realized in a single process, and non-simultaneous coating can be achieved by controlling the length and timing of the supply time. , or a mixed application of continuous application and intermittent application can also be realized. This allows for effective application to the limitations of various application conditions, such as wide slot widths, high paint viscosity, or high application speeds due to process requirements, and Coating quality can be optimized by eliminating problems such as coating thickness variations and width abnormalities caused by non-uniformity.

The above content is only a preferred embodiment of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes or modifications made based on the features and spirit described in the registered claims of the present invention shall be included within the scope of the registered claims of the present invention.

1 Improved slot die coating system 101 First injection port 102 Second injection port 103 Third injection port 104 Slot nozzle 1041 Slot nozzle 1042 Slot nozzle 1043 Slot nozzle 105 Channel 1051 First paste storage groove 1051A First paste storage groove 1051B First paste storage groove 1051C First paste storage groove 1052 Second paste storage groove 1052A Second paste storage groove 1052B Second paste storage groove 1052C Second paste storage groove 11 Upper die 12 Lower die 20 Supply module 21 First supply tank 211 First supply pipe 22 Second supply tank 221 Second supply pipe 23 Third supply tank 231 Third supply pipe 30 Partition plate 301 First notch 302 Second notch 303 Third notch 31 First protrusion 32 Second Projection part 33 Third projection part 34 Fourth projection part 41 First coating head main body 42 Second coating head main body 43 Third coating head main body 51 Roller 52 Base material 53 Application pattern 60 Drying device

Claims (11)

An improved slot die coating system that includes a coating head body and is capable of receiving and applying paint, the system comprising:
The coating head body has at least one flow path and at least one slot nozzle, and the improved slot die coating system further includes a plurality of feed modules and a partition plate, each of the feed modules communicate with the flow path independently of each other, and the partition plate divides the flow path into a plurality of discharge ports corresponding to the supply modules,
Improved slot die coating system. The improved slot die coating system of claim 1, wherein the coating head body includes an upper die and a lower die each having a first paste receiving groove and a second paste receiving groove. 3. The improved slot die coating system of claim 2, wherein the upper die has a plurality of inlets, each inlet corresponding to one of the feed modules. 3. The partition plate has a plurality of cutouts, each cutout corresponding to one of the supply modules and allowing application by the supply module at a separate outlet. Improved slot die coating system. The improved slot die coating system of claim 1, wherein the coating head body has a plurality of channels corresponding to each of the supply modules, and wherein each of the channels is independent and not in communication with each other. 6. The improved slot die coating system of claim 5, wherein the coating head body has a plurality of the slot nozzles corresponding to the flow path. 2. The improved slot die coating system of claim 1, wherein the feed module can apply simultaneously or non-simultaneously in correspondence with the outlet. The improved slot die coating system of claim 1, wherein the supply module is capable of intermittent coating in correspondence with the outlet. An improved slot die coating system that receives and applies paint,
including a plurality of coating head bodies, the coating head bodies being installed in parallel and each independently connected to a supply module, each of the coating head bodies having a flow path and a slot nozzle; receiving the paint from a supply module and allowing it to flow into the flow path and applying it through the slot nozzle;
Improved slot die coating system. 10. The improved slot die coating system of claim 9, wherein the coating head bodies can be applied simultaneously or non-simultaneously by the supply module. 10. The improved slot die coating system of claim 9, wherein the coating head body can be intermittently coated by the supply module.

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