Back piece for supporting sheet material, distributor assembly and coating system

Abstract

A backing for supporting a sheet, a dispenser assembly, and a coating system are provided. A backing (3) for supporting a sheet (1) comprises: a base (30); a first peak portion (31) connected to the base portion; and a second peak portion (32) connected to the base portion wherein the widths of the first peak portion and the second peak portion correspond to the width of the portion of the sheet to be coated; a certain gap is formed between the first peak part and the second peak part, so that when the sheet moves on the back piece and abuts against the first peak part and the second peak part, the part, between the first peak part and the second peak part, of the sheet can move up and down. The dispenser assembly includes a dispenser and the backing, and the coating system includes a plurality of dispenser assemblies.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of Chinese Patent Application No. 202320291020.3 filed on February 22, 2023, the entire contents of which are incorporated herein by reference for all purposes as if fully set forth herein. Technical Field

[0002] The present disclosure relates to a backing for supporting sheet material, a dispenser assembly, and a coating system. Background Art

[0003] CATL's slitting machines, used in the manufacture of positive and negative electrodes for electric vehicle power batteries, have achieved high line speeds (up to 100 m / min) or even higher hot-melt adhesive coating speeds, replacing traditional tape bonding processes. Equivalent adhesive film widths typically range from 4 mm to 12 mm, with a 7 mm film width being particularly desirable. For electrode laser cutting efficiency and inherent properties, the required adhesive thickness is typically in the 10-20 μm range.

[0004] It should generally not exceed this specified range. In terms of glue pattern quality, the electrode substrate used to manufacture the electrode should generally be coated with glue evenly and consistently. Any defects such as missing glue and coating are not permitted. According to the strict regulations for electrode manufacturing, there is no tolerance for exposing the metal that is supposed to be coated with glue to the atmosphere.

[0005] Furthermore, start / stop functionality is a mandatory requirement for continuous coating performance, where hammering and broken coating failures often occur.

[0006] There are many known methods and solutions for applying glue to substrates. Spraying and spraying are the most common non-contact methods that can attach glue to any type of substrate. Unfortunately, neither spraying nor spraying can effectively form a uniform and continuous glue pattern. In this case, slot nozzle coating solutions are often the only way to meet the requirements of this application. Slot nozzle coating usually operates to distribute the glue to the electrode in a certain contact manner. However, the pressure needs to be properly established to balance the internal tension from the electrode in order to obtain the desired glue film thickness. Moreover, the main geometric dimensions and parameters should be precisely defined to provide the best coating performance in a long-term manner. Currently, the electrode substrate is conveyed by conveyor rollers when being coated with glue. Due to its small thickness and large length, the electrode substrate is loose and droops between adjacent conveyor rollers, making it difficult to achieve a uniform and consistent coating on the electrode substrate.

[0007] Therefore, there is room for and / or a need for improvement in coating solutions. Summary of the Invention

[0008] An aspect of the present disclosure is to provide a back member for supporting a sheet, a dispenser assembly, and a coating system to solve the problem of sheet looseness and the problem of uneven and intermittent coating in the prior art.

[0009] The present disclosure provides a back member for supporting a sheet, the back member comprising: a base; a first peak connected to the base; and a second peak connected to the base, wherein the widths of the first and second peaks correspond to the width of a portion of the sheet to be coated; and a gap is present between the first and second peaks, such that when the sheet is moved against the first and second peaks on the back member, the portion of the sheet between the first and second peaks is able to move up and down.

[0010] According to the above-described back member for supporting a sheet, when the sheet is moved against the first and second peaks on the back member, the portion of the sheet between the first and second peaks is able to move up and down. Thereby, the tension in the sheet can be adjusted to tighten the sheet, and a uniformly and consistently coated article, such as a sheet, can be obtained. The sheet is, for example, an electrode substrate.

[0011] In aspects, the back member is a fixed back member, wherein the first and second peaks are fixed with respect to the base. Thereby, the back member according to the present disclosure can be realized in a simple structure.

[0012] In aspects, the first and second peaks are integrally formed with the base. Thereby, the back member according to the present disclosure can be realized in a simple structure.

[0013] In aspects, the back member is a telescopic back member, wherein at least one of the first and second peaks is telescopic with respect to the base. Thereby, the tension in the sheet can be adjusted with a more precise accuracy.

[0014] In aspects, the telescopic peak is in the form of a rod connected to the base via a spring. Thereby, the back member according to the present disclosure can be realized in a simple structure.

[0015] In aspects, the telescopic peak is the front peak of the first and second peaks in the moving direction of the sheet. Thereby, the adjustment of the tension in the sheet is facilitated.

[0016] In various aspects, the back piece includes a limiting member fixed to the base for limiting the movement of the rod. Thus, the tension in the sheet material can be adjusted with more precise accuracy.

[0017] In various aspects, the telescoping peaks of the first and second peaks include rollers connected to the base via roller brackets via springs, thereby facilitating guiding the movement of the sheet.

[0018] In various aspects, the telescopic peak is a front peak of the first peak and the second peak in the moving direction of the sheet. Thus, the tension in the sheet can be adjusted with more precise accuracy.

[0019] In various aspects, the back piece includes a limiting member fixed to the base for limiting the movement of the roller.

[0020] In various aspects, the trailing peak of the first and second peaks in the direction of movement of the sheet comprises a roller, and the roller of the trailing peak is connected to the base via another roller bracket, thereby facilitating the guidance of the movement of the sheet.

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

[0022] In various aspects, the back piece is a swing-type back piece, wherein at least one of the first peak and the second peak is swingable relative to the base, thereby enabling adjustment of the tension in the sheet to tighten the sheet while facilitating control of the amount of swing of the peak.

[0023] In various aspects, the swingable peak of the first peak and the second peak is in the form of a rod that is swingably connected to the base via a shaft.

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

[0025] In various aspects, the swingable peak portion is a front peak portion in the moving direction of the sheet, of the first peak portion and the second peak portion.

[0026] In various aspects, the swingable peak portion of the first peak portion and the second peak portion includes a roller swingably connected to the base portion via a swing arm shaft through a swing arm.

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

[0028] In various aspects, the swing arm includes a first arm and a second arm, the second arm being connected to the first arm at a corner portion, the roller being mounted on the free end of the first arm, the free end of the second arm being inserted into the recess of the base portion, and the swing arm shaft passing through a through-hole in the corner portion. Thus, a swing arm is realized with a simple structure.

[0029] The present disclosure provides a dispenser assembly, which includes: a dispenser, the dispenser including a tank and a nozzle holder, a nozzle mounted on the nozzle holder, the nozzle being fluidically connected to the tank; and a backing member for supporting a sheet as described above, wherein, when the sheet moves between the backing member and the dispenser for coating the sheet through the dispenser, the nozzle holder moves downward to squeeze the sheet so that a portion of the sheet between the first peak and the second peak moves downward.

[0030] According to the dispenser assembly, when the sheet moves on the backing member for coating by the dispenser, the nozzle holder moves downward to press the sheet, causing the portion of the sheet between the first peak and the second peak to move downward. This allows the tension in the sheet to be adjusted, and enables uniform and consistent coating of the article to be coated (such as a sheet).

[0031] In various aspects, the nozzle is a slot nozzle, thereby enabling a thin and uniform coating thickness to be achieved.

[0032] In various aspects, the nozzle is located exactly between the first peak and the second peak in the moving direction of the sheet.

[0033] The present disclosure also 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 material, thereby improving coating efficiency.

[0034] There has thus been outlined, rather broadly, certain aspects of the disclosure in order that the detailed description 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 hereinafter and that will form the subject of the claims appended hereto.

[0035] In this regard, before explaining at least one aspect of the present disclosure in detail, it should be understood that the present disclosure is not limited in its application to the details of construction and is not limited to the arrangement of components set forth in the following description or shown in the accompanying drawings. The present disclosure is capable of aspects other than those described and can be practiced and carried out in various ways. Furthermore, it should be understood that the phraseology and terminology employed herein, as well as the abstract, are for descriptive purposes only and should not be considered as limiting.

[0036] Thus, those skilled in the art will appreciate that the conception upon which the present disclosure is based can readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present 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 present disclosure.

[0037] These and other objects and advantages of the present disclosure will become more fully apparent from the following description, taken in conjunction with the accompanying drawings, wherein the same reference numerals identify similar or like components throughout the several views, and wherein: BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 A first aspect of a back piece for supporting a sheet material according to the present disclosure is shown, the back piece being in the form of a fixed back piece;

[0039] Figure 2 A second aspect of a back piece for supporting a sheet material according to the present disclosure is shown, the back piece being in the form of a telescopic back piece;

[0040] Figure 3 An enlarged view of the back piece and nozzle seat in Figure 2 is shown;

[0041] Figure 4 A third aspect of a back piece for supporting a sheet material according to the present disclosure is shown, the back piece being in the form of a telescopic back piece;

[0042] Figure 5 An enlarged view of the back piece and nozzle seat in Figure 4 is shown;

[0043] Figure 6 A perspective view of a dispenser assembly and coating system including a back piece of the present disclosure is shown;

[0044] Figure 7 A fourth aspect of a back piece for supporting a sheet material according to the present disclosure is shown, the back piece being in the form of a swing back piece;

[0045] Figure 8 A perspective view of the back piece and base in Figure 7 is shown;

[0046] Figure 9 A cross-sectional view taken along line IX-IX in Figure 7 through the swing arm shaft is shown;

[0047] Figure 10 A cross-sectional view taken along line X-X in Figure 7 through the spring and guide rod is shown;

[0048] Figure 11Shown along Figure 10 A sectional view taken along line XI-XI passing through the spring and the guide rod;

[0049] Figure 12 Shown include Figure 7 a cross-sectional view of the dispenser assembly of the back piece in FIG; and

[0050] Figure 13 Shown include Figure 7 A perspective view of the dispenser assembly with the back piece in working condition. DETAILED DESCRIPTION

[0051] Hereinafter, aspects of the present disclosure will be described in detail with reference to the accompanying drawings. In the accompanying drawings, the same or corresponding parts are represented by the same numerals and symbols, and repeated descriptions will be omitted.

[0052] In the following description, terms indicating directions such as "upper", "lower", "left", "right", "front", and "back" (if any) are merely used to describe the drawings and do not constitute substantial limitations on the present disclosure.

[0053] Figure 1 A first aspect of a backing member for supporting a sheet material according to the present disclosure is shown, the backing member being in the form of a fixed backing member.

[0054] like Figure 1 As shown, the backing 3 for supporting a sheet according to the present disclosure includes a base 30; a first peak 31, which is connected to the base 30; and a second peak 32, which is connected to the base 30. The first peak 31 and the second peak are spaced apart. The sheet 1 has, for example, a long strip shape and is capable of moving on the backing 3. The sheet 1 can be, for example, an electrode substrate for manufacturing electrodes for power batteries for electric vehicles. Specifically, when coating the sheet 1, the sheet 1 can move on the backing 3 in a moving direction D, which can be perpendicular to the width direction of the first peak and the second peak. The width of the first peak and the second peak both correspond to the width of the portion to be coated of the sheet. Specifically, the width of the first peak and the second peak can be respectively greater than the width of the portion to be coated of the sheet, and at least equal to the width of the portion to be coated of the sheet. The portion to be coated of the sheet can be the entire width of the sheet, or can be one or more portions of the sheet in the width direction.

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

[0056] There is a certain gap or a certain space between the first peak 31 and the second peak 32. When the sheet 1 is moved on the back piece 3 against the first peak 31 and the second peak, the portion of the sheet 1 between the first peak 31 and the second peak 32 can be moved up and down. Specifically, when the sheet 1 is moved on the back piece 3, the nozzle 22 mounted on the nozzle seat 21 of the dispenser 2 or the top of the nozzle seat 21 presses the sheet 1 downward, whereby the portion of the sheet 1 between the first peak 31 and the second peak 32 can be moved up and down, whereby the sheet 1 can be tensioned.

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

[0058] Figure 1 Both peaks of the illustrated back piece 3 can be in the form of a rod, and the first peak 31 and the second peak 32 can be fixed relative to the base 30, whereby the back piece 3 can also be referred to as a double-peak fixed support rod. In particular, the first peak 31 and the second peak 32 are integrally formed with the base 30. In order to apply a fluid, for example glue, of a certain thickness on the upper or front surface of the sheet 1, the double-peak and fixed back piece 3 can be placed under the nozzle seat 21, and the sheet 1 passes between the back piece 3 and the nozzle seat 21. The nozzle 22 is directed in the up-down direction towards the front surface of the sheet 1, and the two peak planes of the first peak 31 and / or the second peak 32 extend straight in the sheet width direction and are directed in the up-down direction towards the back surface of the sheet 1. Between the back piece 3 and the nozzle seat 21 or the nozzle 22, the sheet 1 slides past the two peak planes of the double-peak fixed support rod to be coated.

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

[0060] The distance between the top or peak plane of the first peak 31 and the bottom of the nozzle 22 may be different or the same as the distance between the top or peak plane of the second peak 32 and the bottom of the nozzle 22. Moreover, the bottom of the nozzle 22 may be located anywhere between the top of the first peak 31 and the top of the second peak 32, and in various aspects, is located at an intermediate position between the top of the first peak 31 and the top of the second peak 32.

[0061] With the backing member 3 described above, the sheet 1 can always be stretched between the nozzle 22 and the backing member 3 during the coating process, thereby being able to apply a fluid such as glue of a specific thickness on the surface of the sheet 1, in particular, being able to consistently form a continuous coating of 10 to 20 μm.

[0062] Figure 2 A second aspect of a backing for supporting a sheet material according to the present disclosure is shown, the backing being in the form of a telescoping backing. Figure 3 Shown Figure 2 Magnified view of the backing piece and nozzle holder in the .

[0063] like Figure 2 The back piece 3 shown may be a telescopic back piece, wherein at least one of the first peak portion 31 and the second peak portion 32 may be telescopic relative to the base portion 30, specifically telescopic in the up-down direction. Figure 2 and Figure 3 As shown, the telescopic peak may be the front peak of the first peak 31 and the second peak 32 in the sheet moving direction D of the sheet. The telescopic peak may be in the form of a rod, which may be connected to the base 30 via a spring 33.

[0064] like Figure 3 In the illustration, the front peak in the sheet moving direction D of the sheet 1, ie the second peak 32, may be in the form of a rod which may be connected to the base 30 via a spring 33. Although the functionality of this aspect may be the same as Figure 1 The function of the structure described in is the same, but when the sheet 1 moves between the nozzle holder 21 and the double-peak backing 3, the second peak portion 32 can move up and down, thereby reasonably adjusting the tension in the sheet 1.

[0065] The back member 3 may include a limiting member 34, which can be secured to the base 30 via fasteners (such as bolts) to limit the movement of the second peak 32 (which may be a telescopic second peak). Specifically, one end of the limiting member 34 may be secured to the base 30, while the other end abuts against the second peak 32. This allows for a maximum height of the second peak 32 to be set. In various aspects, the maximum height of the second peak 32 can be equal to the height of the first peak 31. The limiting member may have any shape, and may, for example, be a straight line or an L-shape.

[0066] With the backing member 3 described above, the sheet 1 can always be stretched between the nozzle 22 and the backing member 3 during the coating process, thereby being able to apply a fluid such as glue of a specific thickness on the surface of the sheet 1, in particular, being able to consistently form a continuous coating of 10 to 20 μm.

[0067] Figure 4 A third aspect of a back piece for supporting a sheet material according to the present disclosure is shown, said back piece also being in the form of a telescopic back piece. Figure 5 Shown Figure 4 Magnified view of the backing piece and nozzle holder in the .

[0068] like Figure 4 The back piece 3 shown may be a telescopic back piece of the second design, wherein at least one of the first peak 31 and the second peak 32 is telescopic relative to the base 30. In particular, Figure 4 and Figure 5 As shown, the telescopic peak may be the front peak of the first peak 31 and the second peak 20 in the sheet moving direction D of the sheet. At least the telescopic peak of the first peak 31 and the second peak 32 includes a roller, and the roller may be connected to the base 30 via a spring 33.

[0069] like Figure 5 In the figure, the front peak of the sheet 1 in the sheet moving direction D, that is, the second peak 32 includes a roller 36. The roller 36 can be supported on a roller bracket 38. The roller 36 can be connected to the base 30 via the roller bracket 38 via a spring 33. Although the function of this aspect can be the same as Figure 1 The function of the structure described in is the same, but when the sheet 1 moves between the nozzle holder 21 and the double-peak backing 3, the second peak portion 32, specifically the roller 36 of the second peak portion 32, can move up and down, thereby reasonably adjusting the tension in the sheet 1.

[0070] In various aspects, such as Figure 5The back member 3 shown may also include a limiting member, which can be bolted to the base 30 to limit the movement of the telescopic second peak portion. Specifically, one end of the limiting member can be fixed to the base 30, while the other end abuts against the roller bracket 38. This allows the maximum height of the second peak portion 32 to be set.

[0071] In various aspects, the rear peak of the first and second peaks 31, 32, in the direction of movement of the sheet 1, i.e., the first peak 31, includes rollers 35. The rollers 35 of the rear peak can be connected to the base 30 via another roller bracket 37. The rollers of the first peak 31 and the rollers of the second peak 32 can have the same height. When the sheet 1 moves against the first and second peaks 31, 32, the rollers 35 of the first peak 31 and the rollers 36 of the second peak 32 rotate, thereby facilitating the movement of the sheet 1. Furthermore, when the sheet 1 moves against the first and second peaks 31, 32, the rollers 36 can move up and down, thereby effectively adjusting the tension in the sheet 1.

[0072] although Figure 4 The functions of the structure described in Figure 1 to Figure 2 The function of the structure described in is the same, but the roller can rotate when the sheet 1 moves between the nozzle holder 21 and the bimodal support roller.

[0073] With the backing member 3 described above, the sheet 1 can always be stretched between the nozzle 22 and the backing member 3 during the coating process, thereby being able to apply a fluid such as glue of a specific thickness on the surface of the sheet 1, in particular, being able to consistently form a continuous coating of 10 to 20 μm.

[0074] In the prior art, when a sheet material such as an electrode substrate is conveyed by conveying rollers, the sheet material may be in a loose and sagging state between two adjacent conveying rollers. However, as described above, using the backing 3 according to the present disclosure, the sheet material 1 can be squeezed downward between the two peak planes of the bimodal support rod or roller. Due to the pressure generated by the nozzle holder 21, the sheet material 1 can be tightened between the bimodal support rod or support roller. That is, before applying a fluid such as glue to the sheet material 1, such as aluminum foil, the loose and sagging sheet material 1 can be tightened, thereby promoting a uniform and consistent coating on the sheet material 1.

[0075] In the present disclosure, a high-precision metering pump can be used to accurately supply a fluid such as glue to the nozzle 22 (which can be a slot nozzle) for coating. The slot nozzle has a unique feature that it can form a continuous glue layer of 10 to 20 μm on the electrode aluminum foil. Moreover, using the double-peak backing 3 in the present disclosure, specifically, as Figure 1 and Figure 2The two types of double-peaked back pieces 3 shown and Figure 4 The bimodal support roller or backing element 3 shown with telescopic support rollers allows the sheet 1 to be stretched tightly before the glue is applied to the sheet 1. As far as the backing element in the form of a telescopic support rod and a backing element in the form of a telescopic support roller is concerned, the mechanism is free to move slightly downwards and upwards to appropriately tighten the sheet 1 as long as the electrode tension is alternated in operation.

[0076] If the squeezing force applied by the nozzle holder 21 increases, and thus the tension in the sheet 1 increases, the contact-type telescopic support roller or rod can immediately move downward to compensate for the change in force. The roller or rod does not have to stop moving until a new force balance can be reestablished. Vice versa, as soon as the tension decreases, the contact-type telescopic support roller or rod will react and move upward.

[0077] In the present disclosure, inventive backing elements, such as bimodal support rods and bimodal support rollers, use a simple mechanical structure to tension the sheet during the dispensing process. While the sheet wraps around the nozzle tip as the dispenser applies a layer, pressure can be easily and consistently maintained. As long as the pressure remains stable during operation, the slot nozzle can squeeze the fluid across the entire slot nozzle tip at a constant output pressure. Consequently, coating performance is remarkably stable and consistent.

[0078] The following describes a dispenser assembly and a coating system including a plurality of dispenser assemblies of the present disclosure.

[0079] Figure 6 A perspective view of a dispenser assembly including a backing member of the present disclosure and a coating system including the dispenser assembly is shown. Figure 6 Combined with Figure 1 to Figure 4 As shown, the dispenser assembly according to the present disclosure includes a dispenser 2 and a backing 3 for supporting a sheet 1. The dispenser 2 includes a tank 20 and a nozzle holder 21, on which a nozzle 22 can be mounted. The nozzle 22 can be in fluid communication with the tank 20, so that the fluid from the tank 20 can be dispensed through the nozzle 22 and applied to an object to be coated, such as the sheet 1.

[0080] Specifically, the sheet 1 is moved by the conveying rollers of the conveying roller assembly 5. As the sheet 1 moves on the backing member 3 to be coated by the dispenser 2, the nozzle holder 21 moves downward to press the sheet 1, thereby enabling the portion of the sheet 1 between the first peak 31 and the second peak 32 to move up and down. This allows the portion of the sheet 1 between the first peak 31 and the second peak 32 to be stretched taut. In this stretched state, fluid can be dispensed from the nozzles 22 on the nozzle holder 21 and applied to the surface of the sheet 1. Consequently, a uniform coating of a specific thickness can be achieved.

[0081] The nozzle can be any type of nozzle. In various aspects, the nozzle can be a slot nozzle. A slot nozzle can form a continuous adhesive layer of 10-20 μm on a sheet material, such as aluminum foil. In various aspects, the nozzle can be located directly between the first peak 31 and the second peak 32 in the direction of movement of the sheet material 1.

[0082] When different parts of the same substrate are to be coated, a coating system according to the present disclosure may be used. The coating system includes multiple dispenser assemblies that coat different parts of the sheet simultaneously. Specifically, Figure 6 As shown, 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 can be conveyed by a conveying roller assembly 5. The coating system can include two dispenser assemblies to simultaneously coat different portions of the sheet 1, namely, the first edge region 11 and the second edge region 12, while the sheet 1 can be conveyed by the conveying roller assembly 5.

[0083] It is contemplated that the coating system may also include a plurality, in various aspects, four dispenser assemblies, wherein two dispenser assemblies are located on the front side of the sheet 1 and two dispenser assemblies 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 are capable of simultaneously coating different portions on the front side of the sheet 1, namely the first edge region 11 and the second edge region 12, and different portions on the back side.

[0084] Figure 7 A fourth aspect of a backing member for supporting a sheet material according to the present disclosure is shown, which may be in the form of a swing-out backing member. Figure 8 Shown Figure 7 A perspective view of the back piece and base in FIG.

[0085] The back piece in the fourth aspect may be a swing-type back piece, wherein at least one of the first peak portion 31 and the second peak portion 32 may be swingable relative to the base portion 30. In particular, Figure 7As shown, the peak portion capable of swinging can be the front peak portion of the first peak portion 31 and the second peak portion 32 in the sheet moving direction D. In the fourth aspect, at least one of the first peak portion 31 and the second peak portion 32 can be in the form of a rod or a roller.

[0086] In particular, if Figure 7 As shown in , at least the front peak in the sheet moving direction D of the sheet 1, i.e., the second peak 32 includes a roller 36. The roller 36 can be mounted at one end of a swing arm 361 and can rotate at the one end. The swing arm 361 can be mounted on the base 30 via a swing arm shaft 362. The swing arm shaft 362 can be fixedly mounted on the base 30, and the swing arm 361 can swing around the swing arm shaft 362. The swing arm 361 can also be supported on the base 30 by a spring 33 having a guide rod 364. The guide rod 364 can be attached to the swing arm 361. As shown in Figure 8 As shown in FIG, the two peaks of the backing are arranged side by side, ie one after the other, on the base 30 in the sheet moving direction D of the sheet 1. The arrangement direction or main extension direction of the peaks can be perpendicular to the sheet moving direction D.

[0087] Figure 9 Shown along Figure 7 A cross-sectional view taken along line IX-IX passing through the swing arm shaft. Figure 10 Shown along Figure 7 A cross-sectional view taken along line XX passing through the spring and the guide rod. Figure 11 Shown along Figure 10 A cross-sectional view taken along line XI-XI passing through the spring and the guide rod. Figure 9 As shown in FIG, the swing arm shaft 362 may be in the form of a fastener (such as a bolt) that can be inserted from a hole on one side of the base 30 and passed through a hole on the other side, and can be fixed on the other side by a nut. The swing arm shaft 362 may be suspended relative to the portion of the base 30 between the two holes. The form of the bolt is not limited and may be an external hexagonal bolt, or a bolt such as Figure 8 to Figure 9 Shown are hex socket head cap bolts.

[0088] like Figure 9 to Figure 11 As shown in , the swing arm 361 may have a substantially quadrilateral shape in a plan view and a hook-shaped cross section in the sheet moving 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. Figure 11As shown, the hook-shaped swing arm 361 has a first arm 3611 and a second arm 3612 connected to the first arm at a corner portion. A free end of the first arm 3611 can be fitted with the roller 36, and a free end of the second arm 3612 can be inserted into the recess of the base 30. A through-hole can be provided at the corner portion of the swing arm 361 through which the swing arm shaft 362 passes. When the swing arm 361 swings around the swing arm shaft 362, the second arm 3612 of the swing arm 361 can be restricted in the recess of the base 30, so that the swing range of the swing arm 361 can be restricted.

[0089] As shown, the first arm 3611 of the swing arm 361, such as a substantially central portion of the first arm, can be supported on the base 30 by the spring 33. The number of springs can not be limited, for example, can be 1, 2, 3, and / or more springs. When the number of springs is odd, one spring supports the first arm of the swing arm 361 at a 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 Figure 11 , the first arm of the swing arm 361 can be supported on the base 30 by an even number, for example, 2 springs 33 on both sides in the sheet width direction. The even number, for example, two springs 33 can be symmetrical about the central portion of the first arm in the sheet width direction. Figure 10

[0090] As shown in detail in Figure 11 , the spring 33 has a guide rod 364 along which the spring can be elongated or contracted. The guide rod 364 can be attached on the bottom plane of the first arm of the swing arm 361, i.e., the arm on which the roller 36 is mounted. A spring seat 365 in the form of a recess can be provided on the base 30. One end of the spring 33 can be fixed in the spring seat 365, and the other end can be fixed on the bottom plane of the first arm of the swing arm 361. The guide rod 364 can be located in the spiral space of the spring 33. The arrangement of the spring can not be limited to the above configuration, and alternatively, the guide rod 364 can be attached on the base 30, and the spring seat can be provided in the first arm. Although the function of this aspect can be roughly the same as that of the structure described in Figure 1 , when the sheet 1 moves between the nozzle seat 21 and the double-peak back piece 3, the swing arm 361 can swing around the swing arm shaft 362, whereby the second peak portion 32, in particular the roller 36 of the second peak portion 32, can move up and down, whereby the tension in the sheet 1 can be reasonably adjusted.

[0091] It is envisaged that, instead of the roller 36, the second peak portion 32 can be in the form of a rod, which can be part of the first arm of the swing arm 361, i.e., the end portion of the first arm.

[0092] ​Further, the first peak 31 and the second peak 32 can have the same or different forms, i.e. the first peak 31 and the second peak 32 can both be in the form of a rod, both be in the form of a roller, or one be in the form of a rod and the other be in the form of a roller, respectively. When the first peak 31 and the second peak 32 have the same form, the first peak 31 and the second peak 32 can have a symmetrical configuration in the sheet moving direction D. In particular, the rear peak in the sheet moving direction D of the sheet 1 among the first peak 31 and the second peak 32, i.e. the first peak 31, can include a roller 35 rotatably connected to the base 30. Specifically, the roller 35 can be connected to the base 30 by a roller bracket as shown in Figure 11 or can be connected to the base 30 by a structure having the same configuration as the swing arm 361 and the same mounting manner. In aspects, the roller of the first peak 31 and the roller of the second peak 32 can have the same height. When the sheet 1 moves against the first peak 31 and the second peak 32, the roller 35 of the first peak 31 and the roller 36 of the second peak 32 are both rotated, thereby facilitating the movement of the sheet 1. And, when the sheet 1 moves against the first peak 31 and the second peak 32, at least the roller 36 is capable of moving up and down, whereby the tension in the sheet 1 can be reasonably adjusted.

[0093] Figure 12 A cross-sectional view of a dispenser assembly including a back piece of Figure 7 is shown. Figure 13 A perspective view of a dispenser assembly including a back piece of Figure 7 in a working state is shown. As shown in Figure 12 , the dispenser assembly includes a dispenser 2 and a back piece 3. When the sheet 1 moves on the first peak 31 and the second peak 32, i.e. the roller 35 and the roller 36, of the back piece, the nozzles 22 of the nozzle seat 21 are capable of pressing the sheet 1 downward between the roller 35 and the roller 36.

[0094] As shown in Figure 13 , when the dispenser assembly is working, the sheet 1 can be pressed downward by the nozzles 22 of the dispenser 2 when passing through the back piece 3, and a dent can be formed on the sheet 1 in the sheet width direction, whereby the portion of the sheet 1 between the roller 35 and the roller 36 can be tensioned.

[0095] With the above-described back piece 3, during the coating process, the sheet 1 can always be tensioned between the nozzles 22 and the back piece 3, whereby a fluid such as glue of a certain thickness can be applied on the surface of the sheet 1, and in particular, a continuous coating layer of 10-20 μιη can be consistently formed.

[0096] The following are a plurality of non-limiting examples of aspects of the present disclosure.

[0097] One example: A backing member includes a base (30). The backing member also includes a first peak (31) connected to the base. In addition, the member includes a second peak (32) connected to the base. The member also includes wherein the width of the first peak and the second peak both correspond to the width of the portion of the sheet to be coated. The member also includes wherein there is a certain gap between the first peak and the second peak, so that when the sheet moves against the first peak and the second peak on the backing member, the portion of the sheet between the first peak and the second peak can move up and down.

[0098] The above examples may also include any one of the following examples or a combination of more than one examples: a back piece according to the above examples, characterized in that the back piece is a fixed back piece, wherein the first peak (31) and the second peak (32) are fixed relative to the base (30). A back piece according to the above examples, characterized in that the first peak and the second peak are formed integrally with the base. A back piece according to the above examples, characterized in that the first peak and the second peak have the same height. A dispenser assembly, characterized in that the dispenser assembly includes: a dispenser (2), the dispenser (2) including a tank (20) and a nozzle seat (21), a nozzle (22) mounted on the nozzle seat (21), the nozzle being in fluid communication with the tank; and a back piece (3) for supporting a sheet according to any of the above examples, wherein when the sheet (1) moves between the back piece and the dispenser for coating the sheet by the dispenser, the nozzle seat moves downward to squeeze the sheet so that the portion of the sheet between the first peak and the second peak moves downward. According to the dispenser assembly described in the above example, the nozzle is a slot nozzle. According to the dispenser assembly described in the above example, the nozzle is located in the middle of the first peak and the second peak in the moving direction of the sheet (1). According to the coating system described in the above example, the plurality of dispenser assemblies are configured to simultaneously coat different parts of the sheet. According to the back piece described in the above example, the back piece is a telescopic back piece, wherein at least one of the first peak and the second peak is telescopic relative to the base. According to the back piece described in the above example, the telescopic peak of the first peak and the second peak is in the form of a rod, and the rod is connected to the base via a spring (33). According to the back piece described in the above example, the telescopic peak is the front peak of the first peak and the second peak in the moving direction (D) of the sheet. According to the back piece described in the above example, the back piece includes a limiting member (34) fixed to the base for limiting the movement of the rod. The back piece according to the above example is characterized in that the telescopic peak of the first peak and the second peak includes a roller (36), and the roller is connected to the base via a roller bracket (38) via a spring (33). The back piece according to the above example is characterized in that the telescopic peak is the front peak of the first peak and the second peak in the moving direction (D) of the sheet. The back piece according to the above example is characterized in that the back piece includes a limiting member fixed to the base for limiting the movement of the roller.According to the back piece described in the above example, it is characterized in that the peak portion behind the first peak portion and the second peak portion in the moving direction of the sheet includes a roller (35), and the roller of the rear peak portion is connected to the base via another roller bracket (37). According to the back piece described in the above example, it is characterized in that the back piece is a swing-type back piece, in which at least one of the first peak portion and the second peak portion is swingable relative to the base. According to the back piece described in the above example, it is characterized in that the peak portion that can swing among the first peak portion and the second peak portion is in the form of a rod, and the rod is connected to the base (30) in a swingable manner via a swing arm shaft (362). According to the back piece described in the above example, it is characterized in that the bottom of the rod is supported on the base (30) by a spring (33). According to the back piece described in the above example, it is characterized in that the peak portion that can swing is the peak portion in front of the first peak portion and the second peak portion in the moving direction (D) of the sheet. According to the back piece described in the above example, it is characterized in that the peak portion that can swing out of the first peak portion and the second peak portion includes a roller (36), and the roller is connected to the base (30) in a swingable manner via a swing arm (361) via a swing arm shaft (362). According to the back piece described in the above example, it is characterized in that the swing arm (361) is supported on the base (30) by a spring (33) between the roller (36) and the swing arm shaft (362). According to the back piece described in the above example, it is characterized in that the peak portion that can swing out is the front peak portion of the first peak portion and the second peak portion in the moving direction (D) of the sheet. According to the back piece described in the above example, it is characterized in that the rear peak portion of the first peak portion and the second peak portion in the moving direction of the sheet includes a roller (35). The back piece according to the above example is characterized in that the swing arm (361) has a first arm and a second arm, the second arm is connected to the first arm at a corner portion, the free end of the first arm is mounted with the roller (36), the free end of the second arm is inserted into the recess of the base (30), and the swing arm shaft (362) passes through the through hole in the corner portion.

[0099] In one example, a backing member includes a base. The backing member also includes a first peak connected to the base. Furthermore, the member includes a second peak connected to the base. The member further includes wherein the widths of the first peak and the second peak both correspond to the width of the portion of the sheet to be coated. The member further includes wherein a gap exists between the first peak and the second peak, such that when the sheet moves against the first peak and the second peak on the backing member, the portion of the sheet between the first peak and the second peak can move up and down.

[0100] The above examples may also include any one or a combination of more than one of the following examples: the back piece according to the above examples, wherein the back piece is a fixed back piece, wherein the first peak and the second peak are fixed relative to the base. The back piece according to the above examples, wherein the first peak and the second peak are integrally formed with the base. The back piece according to the above examples, wherein the back piece is a telescopic back piece, wherein at least one of the first peak and the second peak is telescopic relative to the base. The back piece according to the above examples, wherein the telescopic peak of the first peak and the second peak is in the form of a rod connected to the base via a spring. The back piece according to the above examples, wherein the telescopic peak is the front peak of the first peak and the second peak in the direction of movement of the sheet. The back piece according to the above examples, wherein the back piece includes a limiting member fixed to the base for limiting the movement of the rod. According to the back piece of the above example, the telescopic peak of the first and second peaks includes a roller, and the roller is connected to the base via a roller bracket via a spring. According to the back piece of the above example, the telescopic peak is the peak of the first and second peaks that is located in front of the sheet in the direction of movement. According to the back piece of the above example, the peak of the first and second peaks that is located behind the sheet in the direction of movement includes a roller, and the roller of the rear peak is connected to the base via another roller bracket. According to the back piece of the above example, the back piece includes a limiting member fixed to the base to limit the movement of the roller. According to the back piece of the above example, the first and second peaks have the same height. According to the back piece of the above example, the back piece is a swinging back piece, and at least one of the first and second peaks is capable of swinging relative to the base. According to the back piece described in the above example, wherein the peak portion that can swing out of the first peak portion and the second peak portion is in the form of a rod, and the rod is connected to the base portion in a swingable manner via a swing arm shaft. According to the back piece described in the above example, wherein the bottom of the rod is supported on the base portion by a spring. According to the back piece described in the above example, wherein the peak portion that can swing out is the front peak portion of the first peak portion and the second peak portion in the moving direction of the sheet. According to the back piece described in the above example, wherein the peak portion that can swing out of the first peak portion and the second peak portion includes a roller, and the roller is connected to the base portion in a swingable manner via a swing arm via a swing arm shaft. According to the back piece described in the above example, wherein the swing arm is supported on the base portion by a spring between the roller and the swing arm shaft.The back piece according to the above example, wherein the peak portion capable of swinging is the front peak portion of the first peak portion and the second peak portion in the moving direction of the sheet. The back piece according to the above example, wherein the rear peak portion of the first peak portion and the second peak portion in the moving direction of the sheet includes a roller. The back piece according to the above example, wherein the swing arm has a first arm and a second arm, the second arm is connected to the first arm at a corner portion, the roller is mounted on the free end of the first arm, the free end of the second arm is inserted into the recess of the base, and the swing arm shaft passes through the through hole in the corner portion. A dispenser assembly according to the above example, wherein the dispenser assembly includes a backing for supporting a sheet, and further includes: a dispenser, wherein the dispenser includes a tank and a nozzle holder, a nozzle mounted on the nozzle holder, and the nozzle is in fluid communication with the tank, wherein when the sheet moves between the backing and the dispenser for coating the sheet through the dispenser, the nozzle holder moves downward to squeeze the sheet so that the portion of the sheet between the first peak and the second peak moves downward. A dispenser assembly according to the above example, wherein the nozzle is a slot nozzle. A dispenser assembly according to the above example, wherein the nozzle is located exactly in the middle of the first peak and the second peak in the direction of movement of the sheet. A coating system according to the above example, wherein the coating system includes a plurality of dispenser assemblies, wherein the plurality of dispenser assemblies are configured to coat different portions of the sheet simultaneously.

[0101] While the specific embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, it is contemplated that various variations and modifications may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined in the appended claims.

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

[0103] It should 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 directly extending onto the other element, or there can be intervening elements. In contrast, when an element is referred to as being "directly on" or "extending directly onto" another element, there are no intervening elements. Similarly, it should be understood that when an element such as a layer, region, or substrate is referred to as being "above" or extending "above" another element, it can be directly above or directly above the other element, or there can be intervening elements. In contrast, when an element is referred to as being "directly above" or extending "directly above" another element, there are no intervening elements. It should 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 the other element, or there can be intervening elements. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements.

[0104] Relative terms, such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical", may be used herein to describe the relationship of one element, layer or region to another element, layer or region as illustrated in the figures. It should 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 terms used herein are for the purpose of describing particular aspects only and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, as used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well. It will be further understood that the terms "comprises," "comprising," "having," and / or "containing" when used herein specify the presence of stated features, integers, steps, operations, elements, and / or parts, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, 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 should also be understood that the terms used herein should be interpreted as having a meaning 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 defined otherwise herein.

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

Claims

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

2. The backing member for supporting a sheet material according to claim 1, wherein: The back piece is a fixed back piece, wherein the first peak portion (31) and the second peak portion (32) are fixed relative to the base portion (30).

3. The backing member for supporting a sheet material according to claim 2, characterized in that: The first peak portion and the second peak portion are integrally formed with the base portion.

4. The backing member for supporting a sheet material according to claim 1, wherein: The back piece is a telescoping back piece, wherein at least one of the first peak and the second peak is telescoping relative to the base.

5. The backing member for supporting a sheet material according to claim 4, characterized in that: The telescopic peaks of the first and second peaks are in the form of rods connected to the base via springs (33).

6. The backing member for supporting a sheet material according to claim 5, characterized in that: The telescopic peak portion is a front peak portion of the first peak portion and the second peak portion in the moving direction (D) of the sheet.

7. The backing member for supporting a sheet material according to claim 5 or 6, characterized in that: The back piece includes a limiting member (34) fixed to the base for limiting the movement of the rod.

8. The backing member for supporting a sheet material according to claim 4, characterized in that: The telescoping peak of the first peak and the second peak comprises a roller (36) connected to the base via a spring (33) through a roller bracket (38).

9. The backing member for supporting a sheet material according to claim 8, characterized in that: The telescopic peak portion is a front peak portion of the first peak portion and the second peak portion in the moving direction (D) of the sheet.

10. The backing member for supporting a sheet material according to claim 8 or 9, characterized in that: The back member includes a limiting member fixed to the base for limiting movement of the roller.

11. The backing member for supporting a sheet material according to claim 9, characterized in that: The rear peak of the first and second peaks in the direction of movement of the sheet comprises a roller (35), the roller of the rear peak being connected to the base via another roller bracket (37).

12. The backing member for supporting a sheet material according to one of claims 1 to 6 and 8 to 9, characterized in that The first peak portion and the second peak portion have the same height.

13. The backing member for supporting a sheet material according to claim 1, wherein: The back piece is a swing-type back piece, wherein at least one of the first peak portion and the second peak portion is swingable relative to the base portion.

14. The backing member for supporting a sheet material according to claim 13, wherein: The swingable peak of the first peak and the second peak is in the form of a rod, which is swingably connected to the base (30) via a swing arm shaft (362).

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

16. The backing member for supporting a sheet material according to any one of claims 13 to 15, characterized in that: The swingable peak portion is a front peak portion of the first peak portion and the second peak portion in the moving direction (D) of the sheet.

17. The backing member for supporting a sheet material according to claim 13, wherein: The swingable peak of the first peak and the second peak comprises a roller (36), which is connected to the base (30) in a swingable manner via a swing arm shaft (362) through a swing arm (361).

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

19. The backing member for supporting a sheet material according to claim 17 or 18, characterized in that: The swingable peak portion is a front peak portion of the first peak portion and the second peak portion in the moving direction (D) of the sheet.

20. The backing member for supporting a sheet material according to claim 19, wherein: The rear peak of the first peak and the second peak in the moving direction of the sheet includes a roller (35).

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

22. A dispenser assembly, characterized in that The dispenser assembly comprises: A dispenser (2), comprising a tank (20) and a nozzle holder (21), wherein a nozzle (22) is mounted on the nozzle holder (21), and the nozzle is in fluid communication with the tank; and A backing (3) for supporting a sheet material according to any one of the preceding claims, Wherein, when the sheet (1) moves between the backing and the dispenser for coating the sheet by the dispenser, the nozzle holder moves downward to squeeze the sheet so that the portion of the sheet between the first peak and the second peak moves downward.

23. The dispenser assembly of claim 22, wherein: The nozzle is a slot nozzle.

24. The dispenser assembly according to claim 22 or 23, wherein: The nozzle is located in the middle of the first peak and the second peak in the moving 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 material simultaneously.

26. A backing member for supporting a sheet material, wherein: The back piece comprises: base; a first peak portion connected to the base portion; and a second peak portion connected to the base portion, wherein the widths of the first peak portion and the second peak portion both correspond to the width of the portion to be coated of the sheet; and There is a certain gap between the first peak and the second peak, so that when the sheet moves on the backing against the first peak and the second peak, the portion of the sheet between the first peak and the second peak can move up and down.

27. The backing member for supporting a sheet material according to claim 26, wherein: The back piece is a fixed back piece, wherein the first peak portion and the second peak portion are fixed relative to the base portion.

28. The backing member for supporting a sheet material according to claim 27, wherein: The first peak portion and the second peak portion are integrally formed with the base portion.

29. The backing member for supporting a sheet material according to claim 26, wherein: The back piece is a telescoping back piece, wherein at least one of the first peak and the second peak is telescoping relative to the base.

30. The backing member for supporting a sheet material according to claim 29, wherein: The telescoping peaks of the first and second peaks are in the form of rods connected to the base via springs.

31. The backing member for supporting a sheet material according to claim 30, wherein: The telescopic peak portion is a front peak portion in the moving direction of the sheet, of the first peak portion and the second peak portion.

32. The backing member for supporting a sheet material according to claim 30, wherein: The back piece includes a limiting member fixed to the base for limiting the movement of the rod.

33. The backing member for supporting a sheet material according to claim 29, wherein: The telescoping peak of the first peak and the second peak includes a roller connected to the base via a spring through a roller bracket.

34. The backing member for supporting a sheet material according to claim 33, wherein: The telescopic peak portion is a front peak portion in the moving direction of the sheet, of the first peak portion and the second peak portion.

35. The backing member for supporting a sheet material according to claim 33, wherein: The back member includes a limiting member fixed to the base for limiting movement of the roller.

36. The backing member for supporting a sheet material according to claim 34, wherein: A rear peak of the first and second peaks in the moving direction of the sheet includes a roller, and the roller of the rear peak is connected to the base via another roller bracket.

37. The backing member for supporting a sheet material according to claim 26, wherein: The first peak portion and the second peak portion have the same height.

38. The backing member for supporting a sheet material according to claim 26, wherein: The back piece is a swing-type back piece, wherein at least one of the first peak portion and the second peak portion is swingable relative to the base portion.

39. The backing member for supporting a sheet material according to claim 38, wherein: The swingable peak of the first peak and the second peak is in the form of a rod that is swingably connected to the base via a swing arm shaft.

40. The backing member for supporting a sheet material according to claim 39, wherein: The bottom of the rod is supported on the base by a spring.

41. The backing member for supporting a sheet material according to claim 38, wherein: The swingable peak portion is a front peak portion in the moving direction of the sheet, of the first peak portion and the second peak portion.

42. The backing member for supporting a sheet material according to claim 38, wherein: The swingable peak portion of the first peak portion and the second peak portion includes a roller swingably connected to the base portion via a swing arm shaft through a swing arm.

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

44. The backing member for supporting a sheet material according to claim 42, wherein: The swingable peak portion is a front peak portion in the moving direction of the sheet, of the first peak portion and the second peak portion.

45. The backing member for supporting a sheet material according to claim 44, wherein: A rear peak portion of the first peak portion and the second peak portion in the moving direction of the sheet includes a roller.

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

47. A dispenser assembly, wherein: The dispenser assembly includes a backing member for supporting a sheet material according to claim 26, and the dispenser assembly further includes: A dispenser comprising a tank and a nozzle holder, wherein a nozzle is mounted on the nozzle holder and the nozzle is in fluid communication with the tank, When the sheet moves between the backing and the dispenser for coating the sheet by the dispenser, the nozzle holder moves downward to press the sheet so that a portion of the sheet between the first peak and the second peak moves downward.

48. The dispenser assembly of claim 47, wherein: The nozzle is a slot nozzle.

49. The dispenser assembly of claim 47, wherein: The nozzle is located exactly between the first peak portion and the second peak portion in the moving direction of the sheet.

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

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