EP4669471A1

EP4669471A1 - Support element for a film, dispenser arrangement and coating system

Info

Publication number: EP4669471A1
Application number: EP24711763.3A
Authority: EP
Inventors: Peter Qui
Original assignee: Nordson Corp
Current assignee: Nordson Corp
Priority date: 2023-02-22
Filing date: 2024-02-21
Publication date: 2025-12-31
Also published as: CN120769779A; JP2026508853A; KR20250150582A; WO2024178035A1; CN219965441U

Abstract

A support member for supporting a sheet, a dispenser assembly and a coating system are provided. The support member (3) for supporting a sheet (1) comprises: a base (30); a first hump (31) connected to the base; and a second hump (32) connected to the base, wherein widths of the first hump and the second hump both correspond to a width of a portion of the sheet to be coated; a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down. The dispenser assembly comprises a dispenser and the support member, and the coating system comprises a plurality of dispenser assemblies.

Description

SUPPORT MEMBER FOR SUPPORTING SHEET, DISPENSER ASSEMBLY AND COATING SYSTEM

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001 ] This application claims the benefit of Chinese Patent Application No. 202320291020.3 filed on February 22, 2023, which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein.

FIELD OF THE DISCLOSURE

[0002] The disclosure relates to a support member for supporting a sheet, a dispenser assembly and a coating system.

BACKGROUND OF THE DISCLOSURE

[0003] Known slitting machines for manufacturing positive and negative electrodes of power batteries of electric vehicles have achieved high production line speeds (up to 100 m/min) or higher hot melt glue coating speeds to replace traditional tape bonding processes. An equivalent glue film width is typically between 4 mm and 12 mm, and in aspects 7 mm. In terms of the electrode laser cutting efficiency and inherent characteristics, it is required that conveyed glue should have a typical thickness in a range of 10-20 pm.

[0004] It should typically not exceed the specified range. In terms of a glue pattern quality, an electrode substrate for manufacturing electrodes should typically be glued uniformly and consistently. Any defect of a lack of glue and a lack of a coating is not allowed. In accordance with strict regulations for electrode manufacturing, it is absolutely zero tolerance to expose a metal that should be coated with glue to the atmosphere.

[0005] Furthermore, a start/stop function is mandatory for a continuous coating performance. In this regard, hammerhead and broken coating failures typically occur frequently.

[0006] Multiple methods and solutions for applying glue to a substrate are known. Jetting and spraying are the most common non-contact methods, which may bond glue to the substrate of any type. Unfortunately, neither jetting nor spraying is effective in forming a uniform and continuous glue pattern. In this case, a slot nozzle coating solution is typically the only way to meet the requirements of this kind of application. The slot nozzle coating typically operates to dispense glue onto an electrode in a certain contact manner. However, it is required to properly establish a pressure to balance an internal tension from the electrode so as to obtain a desired glue film thickness. Moreover, main geometric dimensions and parameters of the glue film should be precisely defined to provide the optimal coating performance over time. At present, the electrode substrate is conveyed by conveying rollers when being glued, and the electrode substrate is in a loose and sagging state between adjacent conveying rollers due to its relatively small thickness and relatively large length, so it is difficult to achieve a uniform and consistent coating on the electrode substrate.

[0007] Thus, there is room for and/or need for improvement in coating solutions. SUMMARY OF THE DISCLOSURE

[0008] An aspect of the disclosure is to provide a support member for supporting a sheet, a dispenser assembly and a coating system, so as to solve a problem of a loose sheet and a problem of a non-uniform and intermittent coating existing in the prior art.

[0009] The disclosure provides a support member for supporting a sheet, characterized in that the support member comprises: a base; a first hump connected to the base; and a second hump connected to the base, wherein the widths of the first hump and the second hump both correspond to the width of a portion of the sheet to be coated; a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down.

[0010] According to the aforesaid support member for supporting a sheet, when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down. Thus, the tension in the sheet can be adjusted to tension the sheet, and an article to be coated, such as a sheet, can be coated uniformly and consistently. The sheet is, for example, an electrode substrate.

[0011 ] In aspects, the support member is a stationary support member, wherein the first hump and the second hump are stationary relative to the base. Thus, the support member according to the disclosure can be achieved with a simple structure.

[0012] In aspects, the first hump and the second hump are integrally formed with the base. Thus, the support member according to the disclosure can be achieved with a simple structure.

[0013] In aspects, the support member is a telescopic support member, wherein at least one of the first hump and the second hump is telescopic relative to the base. Thus, the tension in the sheet can be adjusted more precisely.

[0014] In aspects, the telescopic one of the first hump and the second hump is in the form of a bar, which is connected to the base via a spring. Thus, the support member according to the disclosure can be achieved with a simple structure.

[0015] In aspects, the telescopic hump is the front one of the first hump and the second hump in a movement direction of the sheet. Thus, the adjustment of the tension in the sheet is facilitated.

[0016] In aspects, the support member comprises a stop member, which is fixed to the base for limiting a movement of the bar. Thus, the tension in the sheet can be adjusted more precisely.

[0017] In aspects, the telescopic one of the first hump and the second hump comprises a roller, which is connected to the base via a spring by means of a roller brace. Thus, it is facilitated to guide the movement of the sheet.

[0018] In aspects, the telescopic hump is the front one of the first hump and the second hump in a movement direction of the sheet. Thus, the tension in the sheet can be adjusted more precisely.

[0019] In aspects, the support member comprises a stop member, which is fixed to the base for limiting a movement of the roller.

[0020] In aspects, the rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller, and the roller of the rear hump is connected to the base by means of another roller brace. Thus, it is facilitated to guide the movement of the sheet.

[0021 ] In aspects, the first hump and the second hump have the same height.

[0022] In aspects, the support member is a swinging-type support member, wherein at least one of the first hump and the second hump is swingable relative to the base. Thus, the tension in the sheet can be adjusted to tension the sheet, and meanwhile it is facilitated to control the swing of the hump.

[0023] In aspects, the swingable one of the first hump and the second hump is in the form of a bar, which is connected to the base via a shaft in a swingable manner.

[0024] In aspects, a bottom of the bar is supported by the spring on the base.

[0025] In aspects, the swingable hump is the front one of the first hump and the second hump in a movement direction of the sheet.

[0026] In aspects, the swingable one of the first hump and the second hump comprises a roller, which is connected to the base via a swing arm shaft by means of a swing arm in a swingable manner.

[0027] In aspects, the swing arm is supported by the spring on the base between the roller and the shaft.

[0028] In aspects, the swing arm has a first arm and a second arm connected to the first arm at a corner, a free end of the first arm is mounted with the roller, a free end of the second arm is inserted into a recess of the base, and the swing arm shaft passes through a through hole in the corner. Thus, the swing arm is achieved with a simple construction.

[0029] The disclosure provides a dispenser assembly, comprising: a dispenser including a tank and a nozzle seat on which a nozzle is mounted, the nozzle being in fluid communication with the tank; and the support member for supporting a sheet as stated above, wherein when the sheet moves between the support member and the dispenser for coating the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down. [0030] According to the aforesaid dispenser assembly, when the sheet moves on the support member to coat the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down. Thus, the tension in the sheet can be adjusted, and an article to be coated, such as a sheet, can be coated uniformly and consistently.

[0031 ] In aspects, the nozzle is a slot nozzle. Thus, a relatively small thickness and uniform coating can be achieved.

[0032] In aspects, the nozzle is located in the middle of the first hump and the second hump in a movement direction of the sheet.

[0033] The disclosure further provides a coating system, comprising a plurality of dispenser assemblies, wherein the plurality of dispenser assemblies are configured to simultaneously coat different portions of a sheet. Thus, the coating efficiency can be improved.

[0034] There has thus been outlined, rather broadly, certain aspects of the disclosure in order that the detailed description thereof herein may be better understood, and in order that the present contribution to the art may be better appreciated. There are, of course, additional aspects of the disclosure that will be described below and which will form the subject matter of the claims appended hereto.

[0035] In this respect, before explaining at least one aspect of the disclosure in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The disclosure is capable of aspects in addition to those described and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting.

[0036] As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the disclosure. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the disclosure.

[0037] These and other purposes and advantages of the disclosure will be reflected more completely from the descriptions below in combination with the figures, wherein the same reference signs are used throughout the figures to express the same or similar components, and wherein:

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG. 1 shows a first aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a stationary support member;

[0039] FIG. 2 shows a second aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a telescopic support member;

[0040] FIG. 3 shows an enlarged view of the support member and the nozzle seat in FIG. 2;

[0041 ] FIG. 4 shows a third aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a telescopic support member;

[0042] FIG. 5 shows an enlarged view of the support member and the nozzle seat in FIG. 4;

[0043] FIG. 6 shows a perspective view of a dispenser assembly and a coating system comprising the support member of the disclosure;

[0044] FIG. 7 shows a fourth aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a swinging-type support member;

[0045] FIG. 8 shows a perspective view of the support member and the base in FIG. 7;

[0046] FIG. 9 shows a cross-sectional view taken along line IX-IX passing through the swing arm shaft in FIG. 7; [0047] FIG. 10 shows a cross-sectional view taken along line X-X passing through the spring and the guide bar in FIG. 7;

[0048] FIG. 11 shows a cross-sectional view taken along line XI-XI passing through the spring and the guide bar in FIG. 10;

[0049] FIG. 12 shows a cross-sectional view of the dispenser assembly comprising the support member in FIG. 7; and

[0050] FIG. 13 shows a perspective view of the dispenser assembly comprising the support member in FIG. 7 in an operating state.

DETAILED DESCRIPTION

[0051 ] Aspects according to the disclosure will be described in detail below with reference to the figures. In the descriptions of the figures, the same or corresponding portions are expressed by the same numerals and symbols, and repeated descriptions will be omitted.

[0052] In the descriptions below, the terms “up”, “down”, “left”, “right”, “front”, “rear” and so on (if any) expressing directions are only used to describe the figures, and do not form substantive limitations to the disclosure.

[0053] FIG. 1 shows a first aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a stationary support member.

[0054] As shown in FIG. 1 , a support member 3 for supporting a sheet according to the disclosure comprises a base 30; a first hump 31 connected to the base 30; and a second hump 32 connected to the base 30. The first hump 31 and the second hump are spaced apart. The sheet 1 has, for example, a long strip shape, and can move on the support member 3. The sheet 1 may be, for example, an electrode substrate for manufacturing electrodes of power batteries of electric vehicles. Specifically, when the sheet 1 is coated, the sheet 1 may move on the support member 3 in a movement direction D that may be perpendicular to a width direction of the first hump and the second hump. The widths of the first hump and the second hump both correspond to the width of a portion of the sheet to be coated. Specifically, the widths of the first hump and the second hump may be respectively larger than the width of the portion of the sheet to be coated, and at least equal to the width of the portion of the sheet to be coated. The portion of the sheet to be coated may be the sheet with the entire width, or one or more portions of the sheet in the width direction.

[0055] The first hump and the second hump may have different heights. In aspects, the first hump and the second hump have the same height.

[0056] A gap or a space exists between the first hump 31 and the second hump 32. When the sheet 1 moves on the support member 3 against the first hump 31 and the second hump, a portion of the sheet 1 between the first hump 31 and the second hump can move up and down. Specifically, when the sheet 1 moves on the support member 3, a nozzle 22 mounted on a nozzle seat 21 of a dispenser 2 or a top of the nozzle seat 21 presses the sheet 1 down, whereby a portion of the sheet 1 between the first hump 31 and the second hump 32 can be moved up and down, so the sheet 1 may be tensioned.

[0057] The dispenser 2 may have a tank 20 and the nozzle seat 21 , and the nozzle 22 may be mounted on a nozzle base or the nozzle seat 21 . The tank 20 contains a fluid for coating. The nozzle 22 may be in fluid communication with the tank 20, so that the fluid from the tank 20 can be ejected via the nozzle 22. The nozzle 22 may be in aspects a slot nozzle.

[0058] Both humps of the support member 3 as shown in FIG. 1 may be in the form of a bar, and the first hump 31 and the second hump 32 may be stationary relative to the base 30, so the support member 3 may be also called a double-hump stationary support bar. In particular, the first hump 31 and the second hump 32 are integrally formed with the base 30. In order to apply a fluid such as glue with a specific thickness to the upper surface or the front surface of the sheet 1 , the double-hump and stationary support member 3 may be placed below the nozzle seat 21 , and the sheet 1 passes between the support member 3 and the nozzle seat 21 . The nozzle 22 faces the front surface of the sheet 1 in the up and down direction, and the two hump planes of the first hump 31 , and/or the second hump 32 extend straightly in the sheet width direction and face the back surface of the sheet 1 in the up and down direction. Between the support member 3 and the nozzle seat 21 or the nozzle 22, the sheet 1 slides across the two hump planes of the double-hump stationary support bar to be coated.

[0059] The entire dispenser 2 may be mounted in a module moving in a z-axis or up and down direction. The nozzle 22 may be driven by, for example, a motor to press the sheet 1 down. In aspects, during the movement of the sheet 1 , under the action of the downward pressing force of the nozzle 22, the sheet 1 may be tensioned between the nozzle 22 and the support member 3. The top or the nozzle seat 21 or the nozzle 22 may be partially wrapped by the sheet 1. Thus, on the sheet 1 , a controllable tension may be formed at a location where the nozzle 22 contacts the sheet 1 . Due to such tension, a fluid such as glue from the nozzle 22 may be uniformly and consistently dispensed onto the sheet 1 , for example the front surface of the sheet 1. It may be easily understood that when a further dispenser is provided on the back side of the sheet 1 , the front surface and the back surface of the sheet 1 may be coated simultaneously.

[0060] The distance between a top or a hump plane of the first hump 31 and a bottom of the nozzle 22 may be different from or the same as the distance between a top or hump plane of the second hump 32 and the bottom of the nozzle 22. Moreover, the bottom of the nozzle 22 may be located at any location between the top of the first hump 31 and the top of the second hump 32, and in aspects located at a middle location between the top of the first hump 31 and the top of the second hump 32.

[0061 ] With the aforesaid support member 3, in the coating process, the sheet 1 may be always tensioned between the nozzle 22 and the support member 3, so a fluid such as glue with a specific thickness can be applied to the surface of the sheet 1 , and in particular, a continuous coating with a thickness of 10-20 pm can be formed consistently.

[0062] FIG. 2 shows a second aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a telescopic support member. FIG. 3 shows an enlarged view of the support member and the nozzle seat in FIG. 2. [0063] The support member 3 as shown in FIG. 2 may be a telescopic support member, wherein at least one of the first hump 31 and the second hump 32 may be telescopic relative to the base 30, and specifically telescopic in the up and down direction. In particular, as shown in FIGS. 2 and 3, the telescopic hump may be the front one of the first hump 31 and the second hump 32 in a sheet movement direction D of the sheet. The telescopic hump may be in the form of a bar, which may be connected to the base 30 via a spring 33.

[0064] As shown in FIG. 3, the front hump in the sheet movement direction D of the sheet 1 , i.e. , the second hump 32, may be in the form of a bar, which may be connected to the base 30 via the spring 33. Although the function of the aspect may be the same as the function of the structure as shown in FIG. 1 , when the sheet 1 moves between the nozzle seat 21 and the double-hump support member 3, the second hump 32 may be able to move up and down, so the tension in the sheet 1 may be properly adjusted.

[0065] The support member 3 may comprise a stop member 34, which may be in aspects fixed to the base 30 by a fastener, such as a bolt, for limiting the movement of the second hump 32, which may be a telescopic second hump. Specifically, one end of the stop member 34 may be fixed to the base 30, and the other end thereof abuts against the second hump 32. Thus, the maximum height of the second hump 32 can be set. In aspects, the maximum height of the second hump 32 may be equal to the height of the first hump 31 . The shape of the stop member may be not limited, and may be, for example, a straight line shape or an L shape.

[0066] With the aforesaid support member 3, in the coating process, the sheet 1 may be always tensioned between the nozzle 22 and the support member 3, so a fluid such as glue with a specific thickness can be applied to the surface of the sheet 1 , and in particular, a continuous coating with a thickness of 10-20 pm can be formed consistently.

[0067] FIG. 4 shows a third aspect of a support member for supporting a sheet according to the disclosure, the support member being in the form of a telescopic support member. FIG. 5 shows an enlarged view of the support member and the nozzle seat in FIG. 4.

[0068] The support member 3 as shown in FIG. 4 may be a telescopic support member of a second design, wherein at least one of the first hump 31 and the second hump 32 may be telescopic relative to the base 30. In particular, as shown in FIGS. 4 and 5, the telescopic hump may be the front one of the first hump 31 and the second hump 32 in a sheet movement direction D of the sheet. At least the telescopic one of the first hump 31 and the second hump 32 comprises a roller, which may be connected to the base 30 via a spring 33.

[0069] As shown in FIG. 5, the front hump in the sheet movement direction D of the sheet 1 , i.e., the second hump 32, comprises a roller 36. The roller 36 may be supported on a roller brace 38. The roller 36 may be connected to the base 30 via the spring 33 by means of the roller brace 38. Although the function of the aspect may be the same as the function of the structure as shown in FIG. 1 , when the sheet 1 moves between the nozzle seat 21 and the double-hump support member 3, the second hump 32, specifically the roller 36 of the second hump 32, may be able to move up and down, so the tension in the sheet 1 may be properly adjusted.

[0070] In aspects, the support member 3 as shown in FIG. 5 may also comprise a stop member, which may be in aspects fixed to the base 30 by a bolt, for limiting the movement of the telescopic second hump. Specifically, one end of the stop member may be fixed to the base 30, and the other end thereof abuts against the roller brace 38. Thus, the maximum height of the second hump 32 can be set.

[0071 ] In aspects, the rear one of the first hump 31 and the second hump 32 in the movement direction of the sheet 1 , i.e., the first hump 31 , comprises a roller 35, and the roller 35 of the rear hump may be connected to the base 30 by means of another roller brace 37. The roller of the first hump 31 and the roller of the second hump 32 in aspects may have the same height. When the sheet 1 moves against the first hump 31 and the second hump 32, both the roller 35 of the first hump 31 and the roller 36 of the second hump 32 rotate, so as to facilitate the movement of the sheet 1 . Moreover, when the sheet 1 moves against the first hump 31 and the second hump 32, the roller 36 may be able to move up and down, so the tension in the sheet 1 may be properly adjusted.

[0072] Although the function of the structure in FIG. 4 may be the same as the functions of the structures as shown in FIGS. 1-2, when the sheet 1 moves between the nozzle seat 21 and the double-hump support roller, the roller may rotate.

[0073] With the aforesaid support member 3, in the coating process, the sheet 1 may be always tensioned between the nozzle 22 and the support member 3, so a fluid such as glue with a specific thickness can be applied to the surface of the sheet 1 , and in particular, a continuous coating with a thickness of 10-20 pm can be formed consistently.

[0074] In the prior art, when a sheet such as an electrode substrate is conveyed by conveying rollers, it may be in a loose and sagging state between adjacent conveying rollers. However, as mentioned above, with the support member 3 according to the disclosure, the sheet 1 may be pressed down between the two hump planes of the double-hump support bars or rollers. Due to the pressure generated by the nozzle seat 21 , the sheet 1 may be tensioned between the double-hump support bars or support rollers. That is, prior to applying a fluid such as glue to the sheet 1 such as an aluminum foil, the loose and sagging sheet 1 may be tensioned, so it may be facilitated to achieve a uniform and consistent coating on the sheet 1 .

[0075] In the disclosure, a high-precision metering pump may be used to precisely supply a fluid such as glue to the nozzle 22, which may be a slot nozzle, for coating. The slot nozzle has unique characteristics in that it may form a continuous glue layer with a thickness of 10-20 pm on the electrode aluminum foil. Moreover, with the double-hump support member 3 according to the disclosure, specifically the doublehump support members 3 of two types as shown in FIGS. 1 and 2 and the double-hump support roller or support member 3 with the telescopic support roller as shown in FIG. 4, the sheet 1 may be tightly stretched prior to applying glue to the sheet 1 . In terms of a support member in the form of a telescopic support bar and a support member in the form of a telescopic support roller, the mechanism may be free to move slightly up and down to properly tension the sheet 1 as long as the electrode tensions are alternated in operation.

[0076] If a pressing force exerted by the nozzle seat 21 increases and thus the tension in the sheet 1 increases, the contact-type telescopic support roller or bar may immediately move down to compensate for this change in force. The roller or bar may not stop moving until a new balance of forces may be reestablished, and vice versa, i.e., once the tension decreases, the contact-type telescopic support roller or bar may make a counter reflection and move up.

[0077] In the disclosure, the inventive support member, such as the double-hump support bar and the double-hump support roller, uses a simple mechanical structure to tension the sheet in the dispensing process. Although the sheet wraps the nozzle top when the dispenser may be applying a coating onto the sheet, the pressure may be maintained easily and stably. As long as the pressure may be stable during the operation, the slot nozzle can press the fluid at the entire slot nozzle top at a constant output pressure. Thus, the coating performance will be very stable and consistent.

[0078] The dispenser assembly and the coating system comprising a plurality of dispenser assemblies of the disclosure are described below.

[0079] FIG. 6 shows a perspective view of a dispenser assembly comprising the support member of the disclosure and a coating system comprising the dispenser assembly. As shown in FIG. 6 in combination with FIGS. 1-4, the dispenser assembly according to the disclosure comprises a dispenser 2 and a support member 3 for supporting a sheet 1 . The dispenser 2 includes a tank 20 and a nozzle seat 21 , on which a nozzle 22 may be mounted. The nozzle 22 may be in fluid communication with the tank 20, so a fluid from the tank 20 can be dispensed and applied to an article to be coated, such as the sheet 1 , via the nozzle 22.

[0080] Specifically, the sheet 1 can move under the action of conveying rollers of a conveying roller assembly 5, and when the sheet 1 moves on the support member 3 to coat the sheet 1 by the dispenser 2, the nozzle seat 21 moves down to press the sheet 1 so that a portion of the sheet 1 between the first hump 31 and the second hump 32 can move up and down. Thus, the portion of the sheet 1 between the first hump 31 and the second hump 32 may be tensioned, and in the tensioned state, a fluid may be dispensed from the nozzle 22 on the nozzle seat 21 and applied to the surface of the sheet 1. Thus, a uniform coating with a specific thickness can be achieved.

[0081 ] The nozzle may be in any form. In aspects, the nozzle may be a slot nozzle. The slot nozzle can form a continuous glue layer with a thickness of 10-20 pm on a sheet such as an aluminum foil. In aspects, the nozzle may be located in the middle of the first hump 31 and the second hump 32 in the movement direction of the sheet 1 .

[0082] When different portions of the same substrate are to be coated, the coating system according to the disclosure may be used. The coating system comprises a plurality of dispenser assemblies, which simultaneously coats different portions of the sheet. Specifically, as shown in FIG. 6, the sheet 1 includes a first edge region 11 and a second edge region 12, which are connected by a central region. The sheet 1 may be conveyed by the conveyor roller assembly 5. The coating system may comprise two dispenser assemblies to simultaneously coat different portions of the sheet 1 , i.e., the first edge region 11 and the second edge region 12, when the sheet 1 may be conveyed by the conveyor roller assembly 5.

[0083] It is conceivable that the coating system may also comprise a plurality of, in aspects, four dispenser assemblies, two of which are located on the front side of the sheet 1 and two of which are located on the back side of the sheet 1 . When the sheet 1 is conveyed by the conveying roller assembly 5, the four dispenser assemblies of the coating system can simultaneously coat different portions on the front side of the sheet 1 , i.e., the first edge region 11 and the second edge region 12, as well as different portions on the back side.

[0084] FIG. 7 shows a fourth aspect of a support member for supporting a sheet according to the disclosure, the support member may be in the form of a swinging-type support member. FIG. 8 shows a perspective view of the support member and the base in FIG. 7.

[0085] The support member in the fourth aspect may be a swinging-type support member, wherein at least one of the first hump 31 and the second hump 32 may be swingable relative to the base 30. In particular, as shown in FIG. 7, the swingable hump may be the front one of the first hump 31 and the second hump 32 in a sheet movement direction D of the sheet. In the fourth aspect, at least one of the first hump 31 and the second hump 32 may be in the form of a bar, or in the form of a roller.

[0086] In particular, as shown in FIG. 7, at least the front hump in the sheet movement direction D of the sheet 1 , i.e. , the second hump 32, includes a roller 36. The roller 36 may be mounted at one end of a swing arm 361 and may be rotatable at the one end. The swing arm 361 may be mounted on the base 30 via a swing arm shaft 362. The swing arm shaft 362 may be fixedly mounted on the base 30, and the swing arm 361 may swing around the swing arm shaft 362. The swing arm 361 may be also supported by a spring 33, which has a guide bar 364, on the base 30. The guide bar 364 may be attached to the swing arm 361 . As shown in FIG. 8, the two humps of the support member are provided on the base 30 side by side, i.e., one behind the other, in the sheet movement direction D of the sheet 1 . The arrangement direction or main extension direction of the humps may be perpendicular to the sheet movement direction D.

[0087] FIG. 9 shows a cross-sectional view taken along line IX-IX passing through the swing arm shaft in FIG. 7. FIG. 10 shows a cross-sectional view taken along line X-X passing through the spring and the guide bar in FIG. 7. FIG. 11 shows a cross- sectional view taken along line XI-XI passing through the spring and the guide bar in FIG. 10. As shown in FIG. 9, the swing arm shaft 362 may be in the form of a fastener, such as a bolt, which may be inserted from a hole on one side through a hole on the other side of the base 30, and may be fixed by a nut on the other side. The swing arm shaft 362 may be suspended relative to a portion of the base 30 between the two holes. The form of the bolt may be not limited, and may be an external hexagonal bolt, or an internal hexagonal bolt as shown in FIGS. 8-9.

[0088] As shown in FIGS. 9-11 , the swing arm 361 may have a substantially quadrangular shape in a plan view and a hook-shaped cross section in the sheet movement direction D. The length of the swing arm 361 in the sheet width direction corresponds to the length of the roller 36 in the sheet width direction. As shown in FIG. 11 , the hook-shaped swing arm 361 has a first arm 3611 and a second arm 3612 connected to the first arm at a corner. A free end of the first arm 3611 may be mounted with the roller 36, and a free end of the second arm 3612 may be inserted into a recess of the base 30. A through hole may be provided in the corner of the swing arm 361 , and the swing arm shaft 362 passes through the through hole. When the swing arm 361 swings around the swing arm shaft 362, the second arm 3612 of the swing arm 361 may be limited in the recess of the base 30, so that the swing range of the swing arm 361 may be limited.

[0089] As shown in FIG. 11 , the first arm 3611 of the swing arm 361 , such as the substantially central portion of the first arm, may be supported by the spring 33 on the base 30. The number of the springs may be not limited, and may be, for example, 1 , 2, 3, and/or more springs. When the number of the springs is an odd number, one spring supports the first arm of the swing arm 361 at the central portion of the first arm in the sheet width direction, and the remaining springs (if any) are symmetrically distributed on both sides of the central portion in the sheet width direction to support the first arm of the swing arm 361. Alternatively, as shown in FIG. 10, the first arm of the swing arm 361 may be supported by an even number of, for example, two springs 33 on both sides in the sheet width direction on the base 30. The even number of, for example, two springs 33 may be symmetrical with respect to the central portion of the first arm in the sheet width direction.

[0090] As shown in detail in FIG. 11 , the spring 33 has the guide bar 364, along which the spring can extend or contract. The guide bar 364 may be attached to the bottom surface of the first arm, i.e. , the arm mounted with the roller 36, of the swing arm 361. The base 30 may be provided thereon with a spring seat 365 in the form of a recess. One end of the spring 33 may be fixed in the spring seat 365, and the other end thereof may be fixed on the bottom surface of the first arm of the swing arm 361 . The guide bar 364 may be located in the spiral space of the spring 33. The arrangement of the spring may be not limited to the aforesaid construction, and alternatively, the guide bar 364 may be attached to the base 30, and the spring seat may be provided in the first arm. Although the function of the aspect may be substantially the same as the function of the structure as shown in FIG. 1 , when the sheet 1 moves between the nozzle seat 21 and the double-hump support member 3, the swing arm 361 can swing around the swing arm shaft 362, whereby the second hump 32, specifically the roller 36 of the second hump 32, may be able to move up and down, so the tension in the sheet 1 may be properly adjusted.

[0091 ] It is conceivable that, instead of the roller 36, the second hump 32 may be in the form of a bar, which may be a portion of the first arm of the swing arm 361 , i.e., the end portion of the first arm.

[0092] Furthermore, the first hump 31 and the second hump 32 may be in the same or different forms, i.e., the first hump 31 and the second hump 32 may be both in the form of a bar, both in the form of a roller, or respectively in the form of a bar and in the form of a roller. When the first hump 31 and the second hump 32 are in the same form, the first hump 31 and the second hump 32 may have symmetrical constructions in the sheet movement direction D. In particular, the rear one of the first hump 31 and the second hump 32 in the sheet movement direction D of the sheet 1 , i.e., the first hump 31 , may comprise a roller 35, which may be rotatably connected to the base 30. Specifically, the roller 35 may be connected to the base 30 by a roller brace as shown in FIG. 11 , or may be connected to the base 30 by a structure with the same construction and mounting manner as the swing arm 361 . The roller of the first hump 31 and the roller of the second hump 32 in aspects may have the same height. When the sheet 1 moves against the first hump 31 and the second hump 32, the roller 35 of the first hump 31 and the roller 36 of the second hump 32 both rotate, so as to facilitate the movement of the sheet 1 . Moreover, when the sheet 1 moves against the first hump 31 and the second hump 32, at least the roller 36 may be able to move up and down, so the tension in the sheet 1 may be properly adjusted.

[0093] FIG. 12 shows a cross-sectional view of the dispenser assembly comprising the support member in FIG. 7. FIG. 13 shows a perspective view of the dispenser assembly comprising the support member in FIG. 7 in an operating state. As shown in FIG. 12, the dispenser assembly comprises a dispenser 2 and a support member 3. When the sheet 1 moves on the first hump 31 and the second hump 32, i.e., the roller 35 and the roller 36, of the support member, the nozzle 22 of the nozzle seat 21 can press the sheet 1 down between the roller 35 and the roller 36.

[0094] As shown in FIG. 13, when the dispenser assembly operates, the sheet 1 may be pressed down by the nozzle 22 of the dispenser 2 when moving across the support member 3, and an indentation may be formed on the sheet 1 in the sheet width direction, so the portion of the sheet 1 between the roller 35 and the roller 36 may be tensioned.

[0095] With the aforesaid support member 3, in the coating process, the sheet 1 may be always tensioned between the nozzle 22 and the support member 3, so a fluid such as glue with a specific thickness can be applied to the surface of the sheet 1 , and in particular, a continuous coating with a thickness of 10-20 pm can be formed consistently.

[0096] The following are a number of nonlimiting EXAMPLES of aspects of the disclosure.

[0097] One EXAMPLE: a support member includes a base (30). The support member in addition includes a first hump (31 ) connected to the base. The member moreover includes a second hump (32) connected to the base. The member also includes where widths of the first hump and the second hump both correspond to a width of a portion of the sheet to be coated. The member further includes where a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down.

[0098] The above-noted EXAMPLE may further include any one or a combination of more than one of the following EXAMPLES: The support member of the above-noted EXAMPLE characterized in that the support member is a stationary support member, where the first hump (31 ) and the second hump (32) are stationary relative to the base (30). The support member of the above-noted EXAMPLE characterized in that the first hump and the second hump are integrally formed with the base. The support member of the above-noted EXAMPLE, characterized in that the first hump and the second hump have a same height. A dispenser assembly, characterized in that the dispenser assembly comprises: a dispenser (2) including a tank (20) and a nozzle seat (21 ) on which a nozzle (22) is mounted, the nozzle being in fluid communication with the tank; and a support member (3) for supporting a sheet according to any above-noted EXAMPLE, where when the sheet (1 ) moves between the support member and the dispenser for coating the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down. The dispenser assembly of the above-noted EXAMPLE characterized in that the nozzle is a slot nozzle. The dispenser assembly of the above-noted EXAMPLE characterized in that the nozzle is located in a middle of the first hump and the second hump in a movement direction of the sheet (1 ). The coating system of the above-noted EXAMPLE where the plurality of dispenser assemblies are configured to coat different portions of a sheet simultaneously. The support member of the above-noted EXAMPLE characterized in that the support member is a telescopic support member, where at least one of the first hump and the second hump is telescopic relative to the base. The support member of the above-noted EXAMPLE characterized in that the telescopic one of the first hump and the second hump is in a form of a bar, which is connected to the base via a spring (33). The support member of the above-noted EXAMPLE characterized in that the telescopic hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet. The support member of the abovenoted EXAMPLE characterized in that the support member comprises a stop member (34), which is fixed to the base for limiting a movement of the bar. The support member of the above-noted EXAMPLE characterized in that the telescopic one of the first hump and the second hump comprises a roller (36), which is connected to the base via a spring (33) by means of a roller brace (38). The support member of the above-noted EXAMPLE characterized in that the telescopic hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet. The support member of the above-noted EXAMPLE characterized in that the support member comprises a stop member, which is fixed to the base for limiting a movement of the roller. The support member of the above-noted EXAMPLE characterized in that a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller (35) which is connected to the base by means of another roller brace (37). The support member of the above-noted EXAMPLE characterized in that the support member is a swinging-type support member, where at least one of the first hump and the second hump is swingable relative to the base. The support member of the above-noted EXAMPLE characterized in that the swingable one of the first hump and the second hump is in a form of a bar, which is connected to the base (30) via a swing arm shaft (362) in a swingable manner. The support member of the above-noted EXAMPLE characterized in that a bottom of the bar is supported by a spring (33) on the base (30). The support member of the above-noted EXAMPLE, characterized in that the swingable hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet. The support member of the above-noted EXAMPLE characterized in that the swingable one of the first hump and the second hump comprises a roller (36), which is connected to the base (30) via a swing arm shaft (362) by means of a swing arm (361 ) in a swingable manner. The support member of the above-noted EXAMPLE characterized in that the swing arm (361 ) is supported by a spring (33) on the base (30) between the roller (36) and the swing arm shaft (362). The support member of the above-noted EXAMPLE characterized in that the swingable hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet. The support member of the above-noted EXAMPLE characterized in that a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller (35). The support member of the above-noted EXAMPLE characterized in that the swing arm (361 ) has a first arm and a second arm connected to the first arm at a corner, a free end of the first arm is mounted with the roller (36), a free end of the second arm is inserted into a recess of the base (30), and the swing arm shaft (362) passes through a through hole in the corner.

[0099] One EXAMPLE: a support member includes a base. The support member in addition includes a first hump connected to the base. The member moreover includes a second hump connected to the base. The member also includes where widths of the first hump and the second hump both correspond to a width of a portion of the sheet to be coated. The member further includes where a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down.

[0100] The above-noted EXAMPLE may further include any one or a combination of more than one of the following EXAMPLES: The support member of the above-noted EXAMPLE where the support member is a stationary support member, where the first hump and the second hump are stationary relative to the base. The support member of the above-noted EXAMPLE where the first hump and the second hump are integrally formed with the base. The support member of the above-noted EXAMPLE where the support member is a telescopic support member, where at least one of the first hump and the second hump is telescopic relative to the base. The support member of the above-noted EXAMPLE where the telescopic one of the first hump and the second hump is in a form of a bar, which is connected to the base via a spring. The support member of the above-noted EXAMPLE where the telescopic hump is a front one of the first hump and the second hump in a movement direction of the sheet. The support member of the above-noted EXAMPLE where the support member comprises a stop member, which is fixed to the base for limiting a movement of the bar. The support member of the above-noted EXAMPLE where the telescopic one of the first hump and the second hump comprises a roller, which is connected to the base via a spring by means of a roller brace. The support member of the above-noted EXAMPLE where the telescopic hump is a front one of the first hump and the second hump in a movement direction of the sheet. The support member of the above-noted EXAMPLE where a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller which is connected to the base by means of another roller brace. The support member of the above-noted EXAMPLE where the support member comprises a stop member, which is fixed to the base for limiting a movement of the roller. The support member of the above-noted EXAMPLE where the first hump and the second hump have a same height. The support member of the above-noted EXAMPLE where the support member is a swinging-type support member, where at least one of the first hump and the second hump is swingable relative to the base. The support member of the above-noted EXAMPLE where the swingable one of the first hump and the second hump is in a form of a bar, which is connected to the base via a swing arm shaft in a swingable manner. The support member of the above-noted EXAMPLE where a bottom of the bar is supported by a spring on the base. The support member of the abovenoted EXAMPLE where the swingable hump is a front one of the first hump and the second hump in a movement direction of the sheet. The support member of the abovenoted EXAMPLE where the swingable one of the first hump and the second hump comprises a roller, which is connected to the base via a swing arm shaft by means of a swing arm in a swingable manner. The support member of the above-noted EXAMPLE where the swing arm is supported by a spring on the base between the roller and the swing arm shaft. The support member of the above-noted EXAMPLE where the swingable hump is a front one of the first hump and the second hump in a movement direction of the sheet. The support member of the above-noted EXAMPLE where a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller. The support member of the above-noted EXAMPLE where the swing arm has a first arm and a second arm connected to the first arm at a corner, a free end of the first arm is mounted with the roller, a free end of the second arm is inserted into a recess of the base, and the swing arm shaft passes through a through hole in the corner. The dispenser assembly of the above-noted EXAMPLE where the dispenser assembly comprises a support member for supporting a sheet and further comprises: a dispenser including a tank and a nozzle seat on which a nozzle is mounted, the nozzle being in fluid communication with the tank, where when the sheet moves between the support member and the dispenser for coating the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down. The dispenser assembly of the above-noted EXAMPLE where the nozzle is a slot nozzle. The dispenser assembly of the abovenoted EXAMPLE where the nozzle is located in a middle of the first hump and the second hump in a movement direction of the sheet. The coating system of the abovenoted EXAMPLE where the coating system comprises a plurality of dispenser assemblies where the plurality of dispenser assemblies are configured to coat different portions of a sheet simultaneously.

[0101 ] The aspects of the disclosure have been described in detail above with reference to the figures. It is expectable that various variations and modifications may be made to the disclosure without departing from the spirit and scope of the disclosure as defined in the enclosed claims.

[0102] It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the disclosure. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

[0103] It will be understood that when an element such as a layer, region, or substrate is referred to as being "on" or extending "onto" another element, it can be directly on or extend directly onto another element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" or extending "directly onto" another element, there are no intervening elements present. Likewise, it will be understood that when an element such as a layer, region, or substrate is referred to as being "over" or extending "over" another element, it can be directly over or extend directly over another element or intervening elements may also be present. In contrast, when an element is referred to as being "directly over" or extending "directly over" another element, there are no intervening elements present. It will also be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to another element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.

[0104] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe a relationship of one element, layer, or region to another element, layer, or region as illustrated in the Figures. It will be understood that these terms and those discussed above are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures.

[0105] The terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including" when used herein specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

[0106] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0107] The many features and advantages of the disclosure are apparent from the detailed specification, and, thus, it is intended by the appended claims to cover all such features and advantages of the disclosure which fall within the true spirit and scope of the disclosure. Further, since numerous modifications and variations will readily occur to those skilled in the art, it is not desired to limit the disclosure to the exact construction and operation illustrated and described, and, accordingly, all suitable modifications and equivalents may be resorted to that fall within the scope of the disclosure.

Claims

CLAIMS:

1 . A support member (3) for supporting a sheet (1 ), characterized in that the support member comprises: a base (30); a first hump (31 ) connected to the base; and a second hump (32) connected to the base, wherein widths of the first hump and the second hump both correspond to a width of a portion of the sheet to be coated; and wherein a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down.

2. The support member for supporting a sheet according to claim 1 , characterized in that the support member is a stationary support member, wherein the first hump (31 ) and the second hump (32) are stationary relative to the base (30).

3. The support member for supporting a sheet according to claim 2, characterized in that the first hump and the second hump are integrally formed with the base.

4. The support member for supporting a sheet according to claim 1 , characterized in that the support member is a telescopic support member, wherein at least one of the first hump and the second hump is telescopic relative to the base.

5. The support member for supporting a sheet according to claim 4, characterized in that the telescopic one of the first hump and the second hump is in a form of a bar, which is connected to the base via a spring (33).

6. The support member for supporting a sheet according to claim 5, characterized in that the telescopic hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet.

7. The support member for supporting a sheet according to claim 5 or 6, characterized in that the support member comprises a stop member (34), which is fixed to the base for limiting a movement of the bar.

8. The support member for supporting a sheet according to claim 4, characterized in that the telescopic one of the first hump and the second hump comprises a roller (36), which is connected to the base via a spring (33) by means of a roller brace (38).

9. The support member for supporting a sheet according to claim 8, characterized in that the telescopic hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet.

10. The support member for supporting a sheet according to claim 8 or 9, characterized in that the support member comprises a stop member, which is fixed to the base for limiting a movement of the roller.

11 . The support member for supporting a sheet according to claim 9, characterized in that a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller (35) which is connected to the base by means of another roller brace (37).

12. The support member for supporting a sheet according to any one of claims 1 - 6 and 8-9, characterized in that the first hump and the second hump have a same height.

13. The support member for supporting a sheet according to claim 1 , characterized in that the support member is a swinging-type support member, wherein at least one of the first hump and the second hump is swingable relative to the base.

14. The support member for supporting a sheet according to claim 13, characterized in that the swingable one of the first hump and the second hump is in a form of a bar, which is connected to the base (30) via a swing arm shaft (362) in a swingable manner.

15. The support member for supporting a sheet according to claim 14, characterized in that a bottom of the bar is supported by a spring (33) on the base (30).

16. The support member for supporting a sheet according to any one of claims 13 to 15, characterized in that the swingable hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet.

17. The support member for supporting a sheet according to claim 13, characterized in that the swingable one of the first hump and the second hump comprises a roller (36), which is connected to the base (30) via a swing arm shaft (362) by means of a swing arm (361 ) in a swingable manner.

18. The support member for supporting a sheet according to claim 17, characterized in that the swing arm (361 ) is supported by a spring (33) on the base (30) between the roller (36) and the swing arm shaft (362).

19. The support member for supporting a sheet according to claim 17 or 18, characterized in that the swingable hump is a front one of the first hump and the second hump in a movement direction (D) of the sheet.

20. The support member for supporting a sheet according to claim 19, characterized in that a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller (35).

21. The support member for supporting a sheet according to claim 17 or 18, characterized in that the swing arm (361 ) has a first arm and a second arm connected to the first arm at a corner, a free end of the first arm is mounted with the roller (36), a free end of the second arm is inserted into a recess of the base (30), and the swing arm shaft (362) passes through a through hole in the corner.

22. A dispenser assembly, characterized in that the dispenser assembly comprises: a dispenser (2) including a tank (20) and a nozzle seat (21) on which a nozzle (22) is mounted, the nozzle being in fluid communication with the tank; and a support member (3) for supporting a sheet according to any one of the preceding claims, wherein when the sheet (1 ) moves between the support member and the dispenser for coating the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down.

23. The dispenser assembly according to claim 22, characterized in that the nozzle is a slot nozzle.

24. The dispenser assembly according to claim 22 or 23, characterized in that the nozzle is located in a middle of the first hump and the second hump in a movement direction of the sheet (1 ).

25. A coating system, characterized in that the coating system comprises a plurality of dispenser assemblies according to any one of claims 22-24, wherein the plurality of dispenser assemblies are configured to coat different portions of a sheet simultaneously.

26. A support member for supporting a sheet, wherein the support member comprises: a base; a first hump connected to the base; and a second hump connected to the base, wherein widths of the first hump and the second hump both correspond to a width of a portion of the sheet to be coated; and wherein a gap exists between the first hump and the second hump, so that when the sheet moves on the support member against the first hump and the second hump, a portion of the sheet between the first hump and the second hump can move up and down.

27. The support member for supporting a sheet according to claim 26, wherein the support member is a stationary support member, wherein the first hump and the second hump are stationary relative to the base.

28. The support member for supporting a sheet according to claim 27, wherein the first hump and the second hump are integrally formed with the base.

29. The support member for supporting a sheet according to claim 26, wherein the support member is a telescopic support member, wherein at least one of the first hump and the second hump is telescopic relative to the base.

30. The support member for supporting a sheet according to claim 29, wherein the telescopic one of the first hump and the second hump is in a form of a bar, which is connected to the base via a spring.

31 . The support member for supporting a sheet according to claim 30, wherein the telescopic hump is a front one of the first hump and the second hump in a movement direction of the sheet.

32. The support member for supporting a sheet according to claim 30, wherein the support member comprises a stop member, which is fixed to the base for limiting a movement of the bar.

33. The support member for supporting a sheet according to claim 29, wherein the telescopic one of the first hump and the second hump comprises a roller, which is connected to the base via a spring by means of a roller brace.

34. The support member for supporting a sheet according to claim 33, wherein the telescopic hump is a front one of the first hump and the second hump in a movement direction of the sheet.

35. The support member for supporting a sheet according to claim 33, wherein the support member comprises a stop member, which is fixed to the base for limiting a movement of the roller.

36. The support member for supporting a sheet according to claim 34, wherein a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller which is connected to the base by means of another roller brace.

37. The support member for supporting a sheet according claim 26, wherein the first hump and the second hump have a same height.

38. The support member for supporting a sheet according to claim 26, wherein the support member is a swinging-type support member, wherein at least one of the first hump and the second hump is swingable relative to the base.

39. The support member for supporting a sheet according to claim 38, wherein the swingable one of the first hump and the second hump is in a form of a bar, which is connected to the base via a swing arm shaft in a swingable manner.

40. The support member for supporting a sheet according to claim 39, wherein a bottom of the bar is supported by a spring on the base.

41 . The support member for supporting a sheet according claim 38, wherein the swingable hump is a front one of the first hump and the second hump in a movement direction of the sheet.

42. The support member for supporting a sheet according to claim 38, wherein the swingable one of the first hump and the second hump comprises a roller, which is connected to the base via a swing arm shaft by means of a swing arm in a swingable manner.

43. The support member for supporting a sheet according to claim 42, wherein the swing arm is supported by a spring on the base between the roller and the swing arm shaft.

44. The support member for supporting a sheet according to claim 42, wherein the swingable hump is a front one of the first hump and the second hump in a movement direction of the sheet.

45. The support member for supporting a sheet according to claim 44, wherein a rear one of the first hump and the second hump in the movement direction of the sheet comprises a roller.

46. The support member for supporting a sheet according to claim 42, wherein the swing arm has a first arm and a second arm connected to the first arm at a corner, a free end of the first arm is mounted with the roller, a free end of the second arm is inserted into a recess of the base, and the swing arm shaft passes through a through hole in the comer.

47. A dispenser assembly, wherein the dispenser assembly comprises a support member for supporting a sheet according to claim 26, and the dispenser assembly further comprises: a dispenser including a tank and a nozzle seat on which a nozzle is mounted, the nozzle being in fluid communication with the tank, wherein when the sheet moves between the support member and the dispenser for coating the sheet by the dispenser, the nozzle seat moves down to press the sheet so that a portion of the sheet between the first hump and the second hump moves down.

48. The dispenser assembly according to claim 47, wherein the nozzle is a slot nozzle.

49. The dispenser assembly according to claim 47, wherein the nozzle is located in a middle of the first hump and the second hump in a movement direction of the sheet.

50. A coating system, wherein the coating system comprises a plurality of dispenser assemblies according claim 47, wherein the plurality of dispenser assemblies are configured to coat different portions of a sheet simultaneously.